Update dependency com.autonomousapps.dependency-analysis to v2.5.0

I somehow missed this when migrating to compose and worse yet, didn't have any tests covering it. That's been remedied now so hopefully it continues to work well into the future

Closes #90

.forgejo/workflows/pull_request.yml

@@ -0,0 +1,70 @@
+name: Build & Test
+
+on:
+  pull_request:
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    name: Validate
+    steps:
+    - uses: actions/checkout@v4
+    - name: set up JDK
+      uses: https://git.wbrawner.com/actions/setup-java@v4
+      with:
+        distribution: 'zulu'
+        java-version: '17'
+    - name: Validate Gradle Wrapper
+      uses: https://git.wbrawner.com/gradle/actions/wrapper-validation@v4
+  unit_tests:
+    name: Run Unit Tests
+    runs-on: ubuntu-latest
+    needs:
+    - validate
+    steps:
+      - uses: actions/checkout@v4
+      - name: set up JDK
+        uses: https://git.wbrawner.com/actions/setup-java@v4
+        with:
+          distribution: 'zulu'
+          java-version: '17'
+      - name: Setup Android SDK
+        uses: https://git.wbrawner.com/android-actions/setup-android@v3
+      - name: Setup Gradle
+        uses: https://git.wbrawner.com/gradle/actions/setup-gradle@v4
+      - name: Run unit tests
+        run: ./gradlew check
+      - name: Publish JUnit Results
+        uses: actions/upload-artifact@v3
+        if: always()
+        with:
+          name: Unit Test Results
+          path: "*/build/reports/*"
+          if-no-files-found: error
+  ui_tests:
+    runs-on: ubuntu-latest
+    name: Run UI Tests
+    needs:
+      - unit_tests
+    steps:
+      - uses: actions/checkout@v4
+      - name: set up JDK
+        uses: https://git.wbrawner.com/actions/setup-java@v4
+        with:
+          distribution: 'zulu'
+          java-version: '17'
+      - name: Setup Android SDK
+        uses: https://git.wbrawner.com/android-actions/setup-android@v3
+      - name: Setup Gradle
+        uses: https://git.wbrawner.com/gradle/actions/setup-gradle@v4
+      - name: Build APKs
+        run: ./gradlew assemblePlayDebug assemblePlayDebugAndroidTest
+      - name: Grant execute permission for flank_auth.sh
+        run: chmod +x flank_auth.sh
+      - name: Add auth for flank
+        env:
+          GCLOUD_KEY: ${{ secrets.GCLOUD_KEY }}
+        run: |
+          ./flank_auth.sh
+      - name: Run UI tests
+        run: ./gradlew runFlank

.github/workflows/android.yml

@@ -0,0 +1,77 @@
+name: Android CI
+
+on:
+  pull_request:
+  push:
+    branches: [ main ]
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    name: Validate
+    steps:
+    - uses: actions/checkout@v4
+    - name: set up JDK
+      uses: actions/setup-java@v4
+      with:
+        distribution: 'zulu'
+        java-version: '17'
+    - name: Validate Gradle Wrapper
+      uses: gradle/wrapper-validation-action@v3
+    - name: Enable auto-merge
+      if: ${{ github.event_name == 'pull_request' && github.actor == 'dependabot' }}
+      run: gh pr merge --auto --rebase "$PR_URL"
+      env:
+        PR_URL: ${{github.event.pull_request.html_url}}
+        GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
+  unit_test:
+    name: Run Unit Tests
+    runs-on: ubuntu-latest
+    needs:
+    - validate
+    steps:
+      - uses: actions/checkout@v4
+      - name: set up JDK
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'zulu'
+          java-version: '17'
+      - name: Run unit tests
+        uses: gradle/gradle-build-action@v3
+        with:
+            arguments: testPlayDebugUnitTest
+      - name: Publish JUnit Results
+        uses: dorny/test-reporter@v1
+        if: always()
+        with:
+          name: Unit Test Results
+          path: "*/build/test-results/*/*.xml"
+          reporter: java-junit
+          fail-on-error: true
+  ui_tests:
+    runs-on: ubuntu-latest
+    name: Run UI Tests
+    needs:
+      - validate
+    steps:
+      - uses: actions/checkout@v4
+      - name: set up JDK
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'zulu'
+          java-version: '17'
+      - name: Build with Gradle
+        uses: gradle/gradle-build-action@v3
+        with:
+          arguments: assemblePlayDebug assemblePlayDebugAndroidTest
+      - name: Grant execute permission for flank_auth.sh
+        run: chmod +x flank_auth.sh
+      - name: Add auth for flank
+        env:
+          GCLOUD_KEY: ${{ secrets.GCLOUD_KEY }}
+        run: |
+          ./flank_auth.sh
+      - name: Run UI tests
+        uses: gradle/gradle-build-action@v3
+        with:
+          arguments: runFlank

.gitignore

@@ -12,4 +12,3 @@
 *.log
 keystore.properties
 *.jks
-sentry.properties

.gitlab-ci.yml

@@ -1,4 +1,4 @@
-image: openjdk:8-jdk
+image: openjdk:24-jdk
 
 variables:
   ANDROID_COMPILE_SDK: "28"

README.md

@@ -1,44 +1,36 @@
-# [Simple Markdown](https://wbrawner.com/portfolio/simple-markdown/)
+# Simple Markdown
 
-[![pipeline status](https://gitlab.com/billybrawner/SimpleMarkdown/badges/master/pipeline.svg)](https://gitlab.com/billybrawner/SimpleMarkdown/commits/master)
-[![coverage report](https://gitlab.com/billybrawner/SimpleMarkdown/badges/master/coverage.svg)](https://gitlab.com/billybrawner/SimpleMarkdown/commits/master)
+[![pipeline status](https://github.com/wbrawner/SimpleMarkdown/actions/workflows/android.yml/badge.svg)](https://github.com/wbrawner/SimpleMarkdown/actions/workflows/android.yml)
 
-Simple Markdown is simply a Markdown editor :) I wrote it to offer up an open source alternative to
-the other Markdown editors available on the Play Store. I also wanted to get some practice in
-creating Android apps and have a little something to put into my portfolio.
+<p>
+<img alt="" src="./fastlane/metadata/android/en-US/images/phoneScreenshots/1.png" style="width: 24%" />
+<img alt="" src="./fastlane/metadata/android/en-US/images/phoneScreenshots/2.png" style="width: 24%" />
+<img alt="" src="./fastlane/metadata/android/en-US/images/phoneScreenshots/3.png" style="width: 24%" />
+<img alt="" src="./fastlane/metadata/android/en-US/images/phoneScreenshots/4.png" style="width: 24%" />
+</p>
 
-## Roadmap
+Simple Markdown is an open source Markdown editor.
 
-* [x] Auto-save
-* [x] Night mode
-* [x] Save to cloud (Dropbox, Google Drive, OneDrive)
-* [x] Custom CSS for Markdown preview
-* [ ] Better insert for tables/images/links
-* [ ] Quick-insert toolbar for common Markdown syntax characters
-* [ ] Auto-scroll preview to match edit view in landscape mode
-* [ ] Disable live preview in landscape mode
-* [ ] Disable preview tab for better performance in large files
+<a href='https://play.google.com/store/apps/details?id=com.wbrawner.simplemarkdown&pcampaignid=pcampaignidMKT-Other-global-all-co-prtnr-py-PartBadge-Mar2515-1'><img alt='Get it on Google Play' src='https://play.google.com/intl/en_us/badges/static/images/badges/en_badge_web_generic.png' height="80"/></a>
+[<img src="https://fdroid.gitlab.io/artwork/badge/get-it-on.png"
+     alt="Get it on F-Droid"
+     height="80">](https://f-droid.org/packages/com.wbrawner.simplemarkdown.free/)
 
 ## Building
 
 Using Android Studio is the preferred way to build the project. To build from the command line, you can run
 
-    ./gradlew assembleDebug
+    ./gradlew assembleFreeDebug
 
 ### Crashlytics
 
 SimpleMarkdown makes use of Firebase Crashlytics for error reporting. You'll need to follow the 
 [Get started with Firebase Crashlytics](https://firebase.google.com/docs/crashlytics/get-started?platform=android) guide in order to build the project.
 
-## Contributing
-
-I'd love any contributions, particularly in improving the existing code. Please just fork the
-repository, make your changes, squash your commits, and submit a pull request :)
-
 ## License
 
 ```
-   Copyright 2017-2019 William Brawner
+   Copyright 2017-2022 William Brawner
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.

app/.gitignore

@@ -1,3 +1,4 @@
 /build
 *.apk
+*.aab
 /release

app/build.gradle

@@ -1,166 +0,0 @@
-apply plugin: 'com.android.application'
-apply plugin: 'kotlin-android-extensions'
-apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-kapt'
-apply plugin: 'jacoco'
-apply plugin: 'io.sentry.android.gradle'
-
-def keystoreProperties = new Properties()
-try {
-    def keystorePropertiesFile = rootProject.file("keystore.properties")
-    keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
-} catch (FileNotFoundException ignored) {
-    logger.warn("Unable to load keystore properties. Automatic signing won't be available")
-    keystoreProperties['keyAlias'] = ""
-    keystoreProperties['keyPassword'] = ""
-    keystoreProperties['storeFile'] = File.createTempFile("temp", ".tmp").absolutePath
-    keystoreProperties['storePassword'] = ""
-}
-
-android {
-    configurations.all {
-        resolutionStrategy.force 'com.google.code.findbugs:jsr305:3.0.1'
-    }
-    packagingOptions {
-        exclude 'META-INF/LICENSE-LGPL-2.1.txt'
-        exclude 'META-INF/LICENSE-LGPL-3.txt'
-        exclude 'META-INF/LICENSE-W3C-TEST'
-        exclude 'META-INF/LICENSE'
-        exclude 'META-INF/DEPENDENCIES'
-    }
-    compileSdkVersion 29
-    buildToolsVersion '28.0.3'
-    compileOptions {
-        sourceCompatibility JavaVersion.VERSION_1_8
-        targetCompatibility JavaVersion.VERSION_1_8
-    }
-    kotlinOptions {
-        jvmTarget = "1.8"
-    }
-    defaultConfig {
-        applicationId "com.wbrawner.simplemarkdown"
-        minSdkVersion 21
-        targetSdkVersion 29
-        versionCode 27
-        versionName "0.8.5"
-        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
-        manifestPlaceholders = [
-                sentryDsn: "https://399270639b2e4b10a028a2be9192d1d3@sentry.brawner.dev/2"
-        ]
-        buildConfigField "boolean", "ENABLE_CUSTOM_CSS", "false"
-    }
-    signingConfigs {
-        release {
-            keyAlias keystoreProperties['keyAlias']
-            keyPassword keystoreProperties['keyPassword']
-            storeFile file(keystoreProperties['storeFile'])
-            storePassword keystoreProperties['storePassword']
-        }
-    }
-    buildTypes {
-        debug {
-            applicationIdSuffix ".debug"
-            testCoverageEnabled true
-        }
-        release {
-            minifyEnabled true
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
-            signingConfig signingConfigs.release
-            buildConfigField "boolean", "ENABLE_CUSTOM_CSS", "false"
-        }
-    }
-    flavorDimensions "freedom"
-    productFlavors {
-        play {}
-        free {
-            applicationIdSuffix ".free"
-            versionNameSuffix "-free"
-        }
-    }
-    dexOptions {
-        jumboMode true
-    }
-    testOptions {
-        unitTests {
-            includeAndroidResources = true
-        }
-        execution 'ANDROIDX_TEST_ORCHESTRATOR'
-    }
-}
-
-dependencies {
-    implementation 'androidx.navigation:navigation-fragment-ktx:2.2.2'
-    implementation 'androidx.navigation:navigation-ui-ktx:2.2.2'
-    testImplementation 'junit:junit:4.12'
-    testImplementation 'org.robolectric:robolectric:4.2.1'
-    implementation fileTree(include: ['*.jar'], dir: 'libs')
-    def espresso_version = '3.2.0'
-    androidTestImplementation "androidx.test.espresso:espresso-core:$espresso_version"
-    androidTestImplementation "androidx.test.espresso:espresso-web:$espresso_version"
-    androidTestImplementation "androidx.test.espresso:espresso-intents:$espresso_version"
-    def android_test = '1.2.0'
-    androidTestImplementation "androidx.test:runner:$android_test"
-    androidTestImplementation "androidx.test:rules:$android_test"
-    androidTestUtil "androidx.test:orchestrator:$android_test"
-    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
-    androidTestImplementation 'androidx.test.uiautomator:uiautomator:2.2.0'
-    implementation 'androidx.appcompat:appcompat:1.1.0'
-    implementation 'androidx.preference:preference:1.1.1'
-    implementation "androidx.fragment:fragment-ktx:1.2.4"
-    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
-    implementation 'com.google.android.material:material:1.1.0'
-    implementation 'androidx.legacy:legacy-support-v13:1.0.0'
-    implementation 'com.commonsware.cwac:anddown:0.3.0'
-    playImplementation 'com.android.billingclient:billing:3.0.0'
-    playImplementation 'com.google.firebase:firebase-core:17.4.3'
-    implementation "androidx.core:core-ktx:1.3.0"
-    implementation 'androidx.browser:browser:1.2.0'
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
-    implementation 'io.sentry:sentry-android:2.1.6'
-    def coroutines_version = "1.3.4"
-    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:$coroutines_version"
-    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:$coroutines_version"
-    def lifecycle_version = "2.2.0"
-    implementation "androidx.lifecycle:lifecycle-extensions:$lifecycle_version"
-    kapt "androidx.lifecycle:lifecycle-common-java8:$lifecycle_version"
-    implementation 'eu.crydee:syllable-counter:4.0.2'
-}
-
-android.productFlavors.each { flavor ->
-    if (getGradle().getStartParameter().getTaskRequests().toString().toLowerCase().contains(flavor.name)
-            && flavor.name == 'play') {
-        apply plugin: 'com.google.gms.google-services'
-    }
-}
-
-repositories {
-    mavenCentral()
-    jcenter()
-}
-
-jacoco {
-    toolVersion = '0.8.0'
-}
-
-tasks.withType(Test) {
-    jacoco.includeNoLocationClasses = true
-}
-
-task jacocoTestReport(type: JacocoReport, dependsOn: ['testDebugUnitTest']) {
-    reports {
-        xml.enabled = true
-        html.enabled = true
-    }
-
-    def fileFilter = [ '**/R.class', '**/R$*.class', '**/BuildConfig.*', '**/Manifest*.*', '**/*Test*.*', 'android/**/*.*' ]
-    def javaDebugTree = fileTree(dir: "$project.buildDir/intermediates/javac/debug/compileDebugJavaWithJavac/classes", excludes: fileFilter)
-    def kotlinDebugTree = fileTree(dir: "$project.buildDir/tmp/kotlin-classes/debug", excludes: fileFilter)
-    def mainSrc = "$project.projectDir/src/main/java"
-
-    sourceDirectories.setFrom(files([mainSrc]))
-    classDirectories.setFrom(files([javaDebugTree, kotlinDebugTree]))
-    executionData.setFrom(fileTree(dir: project.buildDir, includes: [
-            'jacoco/testDebugUnitTest.exec',
-            'outputs/code-coverage/connected/*coverage.ec'
-    ]))
-}

app/build.gradle.kts

@@ -0,0 +1,201 @@
+import java.io.FileInputStream
+import java.io.FileNotFoundException
+import java.util.Properties
+
+plugins {
+    alias(libs.plugins.android.application)
+    alias(libs.plugins.compose.compiler)
+    alias(libs.plugins.kotlin.android)
+    alias(libs.plugins.fladle)
+    alias(libs.plugins.triplet.play)
+    id("com.wbrawner.releasehelper")
+}
+
+val keystoreProperties = Properties()
+try {
+    val keystorePropertiesFile = rootProject.file("keystore.properties")
+    keystoreProperties.load(FileInputStream(keystorePropertiesFile))
+} catch (ignored: FileNotFoundException) {
+    logger.warn("Unable to load keystore properties. Automatic signing won't be available")
+    keystoreProperties["keyAlias"] = ""
+    keystoreProperties["keyPassword"] = ""
+    keystoreProperties["storeFile"] = File.createTempFile("temp", ".tmp").absolutePath
+    keystoreProperties["storePassword"] = ""
+    keystoreProperties["publishCredentialsFile"] = ""
+}
+
+android {
+    packaging {
+        resources {
+            excludes += listOf(
+                "META-INF/LICENSE-LGPL-2.1.txt",
+                "META-INF/LICENSE-LGPL-3.txt",
+                "META-INF/LICENSE-W3C-TEST",
+                "META-INF/LICENSE",
+                "META-INF/DEPENDENCIES"
+            )
+        }
+    }
+    compileSdk = libs.versions.maxSdk.get().toInt()
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
+    }
+    kotlinOptions {
+        jvmTarget = "11"
+    }
+    defaultConfig {
+        applicationId = "com.wbrawner.simplemarkdown"
+        minSdk = libs.versions.minSdk.get().toInt()
+        targetSdk = libs.versions.maxSdk.get().toInt()
+        versionCode = 45
+        versionName = "2024.10.0"
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+        testInstrumentationRunnerArguments["clearPackageData"] = "true"
+        buildConfigField("boolean", "ENABLE_CUSTOM_CSS", "true")
+    }
+    signingConfigs {
+        create("playRelease") {
+            keyAlias = keystoreProperties["keyAlias"].toString()
+            keyPassword = keystoreProperties["keyPassword"].toString()
+            storeFile = file(keystoreProperties["storeFile"].toString())
+            storePassword = keystoreProperties["storePassword"].toString()
+        }
+    }
+    buildTypes {
+        release {
+            isMinifyEnabled = true
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro"
+            )
+            buildConfigField("boolean", "ENABLE_CUSTOM_CSS", "false")
+        }
+    }
+    flavorDimensions.add("platform")
+    productFlavors {
+        create("free") {
+            applicationIdSuffix = ".free"
+            versionNameSuffix = "-free"
+        }
+        create("play") {
+            signingConfig = signingConfigs["playRelease"]
+        }
+    }
+    testOptions {
+        unitTests {
+            isIncludeAndroidResources = true
+        }
+        execution = "ANDROIDX_TEST_ORCHESTRATOR"
+    }
+    namespace = "com.wbrawner.simplemarkdown"
+    buildFeatures {
+        compose = true
+    }
+    playConfigs {
+        register("play") {
+            enabled.set(true)
+            commit.set(true)
+        }
+    }
+    lint {
+        disable += listOf(
+            "AndroidGradlePluginVersion",
+            "GradleDependency",
+            "ObsoleteLintCustomCheck"
+        )
+        warningsAsErrors = true
+    }
+}
+
+play {
+    commit.set(false)
+    enabled.set(false)
+    track.set("production")
+    defaultToAppBundles.set(true)
+    (keystoreProperties["publishCredentialsFile"] as? String)?.ifBlank { null }?.let {
+        serviceAccountCredentials.set(file(it))
+    }
+}
+
+dependencies {
+    "freeImplementation"(project(":free"))
+    "playImplementation"(project(":non-free"))
+    implementation(libs.androidx.material3.windowsizeclass)
+    implementation(libs.androidx.navigation.compose)
+    testImplementation(libs.junit)
+    testRuntimeOnly(libs.robolectric)
+    androidTestImplementation(libs.androidx.espresso.core)
+    androidTestImplementation(libs.androidx.espresso.web)
+    androidTestImplementation(libs.androidx.espresso.intents)
+    androidTestRuntimeOnly(libs.androidx.runner)
+    androidTestUtil(libs.androidx.orchestrator)
+    implementation(libs.androidx.core.splashscreen)
+    implementation(libs.androidx.appcompat)
+    implementation(libs.material)
+    implementation(libs.androidx.core.ktx)
+    implementation(libs.androidx.browser)
+    implementation(libs.commonmark)
+    implementation(libs.commonmark.ext.gfm.tables)
+    implementation(libs.commonmark.ext.gfm.strikethrough)
+    implementation(libs.commonmark.ext.autolink)
+    implementation(libs.commonmark.ext.task.list.items)
+    implementation(libs.commonmark.ext.yaml.front.matter)
+    implementation(libs.commonmark.ext.image.attributes)
+    implementation(libs.commonmark.ext.heading.anchor)
+    val composeBom = enforcedPlatform(libs.compose.bom)
+    implementation(composeBom)
+    androidTestImplementation(composeBom)
+    implementation(libs.androidx.runtime)
+    implementation(libs.androidx.ui)
+    implementation(libs.androidx.activity.compose)
+    implementation(libs.androidx.foundation)
+    implementation(libs.androidx.foundation.layout)
+    implementation(libs.androidx.ui.tooling)
+    implementation(libs.androidx.material3)
+    implementation(libs.androidx.material.icons.extended)
+    androidTestImplementation(libs.androidx.ui.test.junit4)
+    runtimeOnly(libs.kotlinx.coroutines.android)
+    testImplementation(libs.kotlinx.coroutines.test)
+    implementation(libs.syllable.counter)
+    androidTestImplementation(libs.androidx.ui.test)
+    androidTestImplementation(libs.androidx.core)
+    androidTestImplementation(libs.androidx.monitor)
+    androidTestImplementation(libs.junit)
+    implementation(libs.androidx.activity.ktx)
+    implementation(libs.androidx.activity.ktx)
+    implementation(libs.androidx.animation.core)
+    implementation(libs.androidx.animation)
+    implementation(libs.androidx.material.icons.core)
+    implementation(libs.androidx.ui.graphics)
+    implementation(libs.androidx.ui.text)
+    implementation(libs.androidx.ui.tooling.preview)
+    implementation(libs.androidx.ui.unit)
+    implementation(libs.androidx.core.ktx)
+    implementation(libs.androidx.lifecycle.viewmodel.ktx)
+    implementation(libs.androidx.navigation.common)
+    implementation(libs.androidx.navigation.runtime.ktx)
+    implementation(libs.androidx.preference.ktx)
+    implementation(libs.acra.core)
+    implementation(libs.timber)
+    implementation(libs.kotlinx.coroutines.core)
+    implementation(project(":core"))
+}
+
+fladle {
+    variant.set("playDebug")
+    useOrchestrator.set(true)
+    environmentVariables.put("clearPackageData", "true")
+    testTimeout.set("7m")
+    devices.add(
+        mapOf("model" to "Pixel2.arm", "version" to "33")
+    )
+    projectId.set("simplemarkdown")
+}
+
+tasks.register<Exec>("pullLogFiles") {
+    commandLine = listOf(
+        "adb", "pull",
+        "/storage/emulated/0/Android/data/com.wbrawner.simplemarkdown/files/logs"
+    )
+}

app/google-services.json

@@ -1,78 +0,0 @@
-{
-  "project_info": {
-    "project_number": "318641233555",
-    "firebase_url": "https://simplemarkdown.firebaseio.com",
-    "project_id": "simplemarkdown",
-    "storage_bucket": "simplemarkdown.appspot.com"
-  },
-  "client": [
-    {
-      "client_info": {
-        "mobilesdk_app_id": "1:318641233555:android:09d865cad87e3b5f",
-        "android_client_info": {
-          "package_name": "com.wbrawner.simplemarkdown"
-        }
-      },
-      "oauth_client": [
-        {
-          "client_id": "318641233555-83n2k1mqhokf0b7lhccqiva9pspgripq.apps.googleusercontent.com",
-          "client_type": 1,
-          "android_info": {
-            "package_name": "com.wbrawner.simplemarkdown",
-            "certificate_hash": "710e37c230689bc259fc6e2e032e2f56956f8d33"
-          }
-        },
-        {
-          "client_id": "318641233555-a5rm2cqqf66jc9j5nmg3ttepdt2iaeno.apps.googleusercontent.com",
-          "client_type": 3
-        }
-      ],
-      "api_key": [
-        {
-          "current_key": "AIzaSyBDMcXg-10NsXLDKJRtj5WnXoHrwg3m9Os"
-        }
-      ],
-      "services": {
-        "appinvite_service": {
-          "other_platform_oauth_client": [
-            {
-              "client_id": "318641233555-a5rm2cqqf66jc9j5nmg3ttepdt2iaeno.apps.googleusercontent.com",
-              "client_type": 3
-            }
-          ]
-        }
-      },
-      "admob_app_id": "ca-app-pub-3319579963502409~4576405307"
-    },
-    {
-      "client_info": {
-        "mobilesdk_app_id": "1:318641233555:android:5dfb62206717437e",
-        "android_client_info": {
-          "package_name": "com.wbrawner.simplemarkdown.samsung"
-        }
-      },
-      "oauth_client": [
-        {
-          "client_id": "318641233555-a5rm2cqqf66jc9j5nmg3ttepdt2iaeno.apps.googleusercontent.com",
-          "client_type": 3
-        }
-      ],
-      "api_key": [
-        {
-          "current_key": "AIzaSyBDMcXg-10NsXLDKJRtj5WnXoHrwg3m9Os"
-        }
-      ],
-      "services": {
-        "appinvite_service": {
-          "other_platform_oauth_client": [
-            {
-              "client_id": "318641233555-a5rm2cqqf66jc9j5nmg3ttepdt2iaeno.apps.googleusercontent.com",
-              "client_type": 3
-            }
-          ]
-        }
-      }
-    }
-  ],
-  "configuration_version": "1"
-}

app/proguard-rules.pro

@@ -2,7 +2,7 @@
 # By default, the flags in this file are appended to flags specified
 # in /home/billy/Android/Sdk/tools/proguard/proguard-android.txt
 # You can edit the include path and order by changing the proguardFiles
-# directive in build.gradle.
+# directive in build.gradle.kts.
 #
 # For more details, see
 #   http://developer.android.com/guide/developing/tools/proguard.html
@@ -27,4 +27,15 @@
 ### Crashlytics ###
 -keepattributes *Annotation*
 -keepattributes SourceFile,LineNumberTable
-### End Crashlytics ###
+-keep public class * extends java.lang.Exception
+### Crashlytics ###
+
+-dontwarn org.bouncycastle.jsse.BCSSLParameters
+-dontwarn org.bouncycastle.jsse.BCSSLSocket
+-dontwarn org.bouncycastle.jsse.provider.BouncyCastleJsseProvider
+-dontwarn org.conscrypt.Conscrypt$Version
+-dontwarn org.conscrypt.Conscrypt
+-dontwarn org.conscrypt.ConscryptHostnameVerifier
+-dontwarn org.openjsse.javax.net.ssl.SSLParameters
+-dontwarn org.openjsse.javax.net.ssl.SSLSocket
+-dontwarn org.openjsse.net.ssl.OpenJSSE

app/src/androidTest/java/com/wbrawner/simplemarkdown/MarkdownTests.kt

@@ -1,182 +0,0 @@
-package com.wbrawner.simplemarkdown
-
-import android.app.Activity.RESULT_OK
-import android.app.Instrumentation
-import android.content.Context
-import android.content.Intent
-import android.content.pm.ActivityInfo
-import android.net.Uri
-import android.view.KeyEvent
-import androidx.core.content.FileProvider
-import androidx.test.InstrumentationRegistry
-import androidx.test.InstrumentationRegistry.getInstrumentation
-import androidx.test.core.app.ApplicationProvider.getApplicationContext
-import androidx.test.espresso.Espresso.onView
-import androidx.test.espresso.Espresso.openActionBarOverflowOrOptionsMenu
-import androidx.test.espresso.action.ViewActions.*
-import androidx.test.espresso.assertion.ViewAssertions.matches
-import androidx.test.espresso.intent.Intents.intending
-import androidx.test.espresso.intent.matcher.IntentMatchers.hasAction
-import androidx.test.espresso.intent.rule.IntentsTestRule
-import androidx.test.espresso.matcher.ViewMatchers.*
-import androidx.test.espresso.web.assertion.WebViewAssertions.webMatches
-import androidx.test.espresso.web.sugar.Web.onWebView
-import androidx.test.espresso.web.webdriver.DriverAtoms.findElement
-import androidx.test.espresso.web.webdriver.DriverAtoms.getText
-import androidx.test.espresso.web.webdriver.Locator
-import androidx.test.uiautomator.UiDevice
-import androidx.test.uiautomator.UiScrollable
-import androidx.test.uiautomator.UiSelector
-import com.wbrawner.simplemarkdown.view.activity.MainActivity
-import org.hamcrest.Matchers.containsString
-import org.junit.Assert.assertEquals
-import org.junit.Before
-import org.junit.Rule
-import org.junit.Test
-import java.io.File
-import java.io.Reader
-
-class MarkdownTests {
-
-    @get:Rule
-    var activityRule = IntentsTestRule(MainActivity::class.java, false, false)
-
-    lateinit var file: File
-
-    @Before
-    fun setup() {
-        file = File(getApplicationContext<Context>().filesDir.absolutePath + "/tmp", "temp.md")
-        file.parentFile?.mkdirs()
-        file.delete()
-        activityRule.launchActivity(null)
-        activityRule.activity.requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
-    }
-
-    @Test
-    @Throws(Exception::class)
-    fun openAppTest() {
-        val mDevice = UiDevice.getInstance(getInstrumentation())
-        mDevice.pressHome()
-        // Bring up the default launcher by searching for a UI component
-        // that matches the content description for the launcher button.
-        val allAppsButton = mDevice
-                .findObject(UiSelector().description("Apps"))
-
-        // Perform a click on the button to load the launcher.
-        allAppsButton.clickAndWaitForNewWindow()
-        // Context of the app under test.
-        val appContext = InstrumentationRegistry.getTargetContext()
-        assertEquals("com.wbrawner.simplemarkdown", appContext.packageName)
-        val appView = UiScrollable(UiSelector().scrollable(true))
-        val simpleMarkdownSelector = UiSelector()
-                .text(getApplicationContext<Context>().getString(R.string.app_name_short))
-        appView.scrollIntoView(simpleMarkdownSelector)
-        mDevice.findObject(simpleMarkdownSelector).clickAndWaitForNewWindow()
-    }
-
-    @Test
-    fun editAndPreviewMarkdownTest() {
-        onView(withId(R.id.markdown_edit)).perform(typeText("# Header test"))
-        onView(withText(R.string.action_preview)).perform(click())
-        onWebView(withId(R.id.markdown_view)).forceJavascriptEnabled()
-                .withElement(findElement(Locator.TAG_NAME, "h1"))
-                .check(webMatches(getText(), containsString("Header test")))
-    }
-
-    @Test
-    fun newMarkdownTest() {
-        onView(withId(R.id.markdown_edit))
-                .perform(typeText("# UI Testing\n\nThe quick brown fox jumped over the lazy dog."))
-        openActionBarOverflowOrOptionsMenu(getApplicationContext())
-        onView(withText(R.string.action_new)).perform(click())
-        onView(withText(R.string.action_discard)).perform(click())
-        onView(withId(R.id.markdown_edit)).check(matches(withText("")))
-    }
-
-    @Test
-    fun saveMarkdownWithFileUriTest() {
-        val markdownText = "# UI Testing\n\nThe quick brown fox jumped over the lazy dog."
-        onView(withId(R.id.markdown_edit)).perform(typeText(markdownText))
-        val activityResult = Instrumentation.ActivityResult(RESULT_OK, Intent().apply {
-            data = Uri.fromFile(file)
-        })
-        intending(hasAction(Intent.ACTION_CREATE_DOCUMENT)).respondWith(activityResult)
-        openActionBarOverflowOrOptionsMenu(getApplicationContext())
-        onView(withText(R.string.action_save_as)).perform(click())
-        Thread.sleep(500)
-        assertEquals(markdownText, file.inputStream().reader().use(Reader::readText))
-        onView(withText("temp.md")).check(matches(withParent(withId(R.id.toolbar))))
-    }
-
-    @Test
-    fun saveMarkdownWithContentUriTest() {
-        val markdownText = "# UI Testing\n\nThe quick brown fox jumped over the lazy dog."
-        onView(withId(R.id.markdown_edit)).perform(typeText(markdownText))
-        val activityResult = Instrumentation.ActivityResult(RESULT_OK, Intent().apply {
-            data = FileProvider.getUriForFile(getApplicationContext(), "com.wbrawner.simplemarkdown.fileprovider", file)
-        })
-        intending(hasAction(Intent.ACTION_CREATE_DOCUMENT)).respondWith(activityResult)
-        openActionBarOverflowOrOptionsMenu(getApplicationContext())
-        onView(withText(R.string.action_save_as)).perform(click())
-        Thread.sleep(500)
-        assertEquals(markdownText, file.inputStream().reader().use(Reader::readText))
-        onView(withText("temp.md")).check(matches(withParent(withId(R.id.toolbar))))
-    }
-
-    @Test
-    fun loadMarkdownWithFileUriTest() {
-        val markdownText = "# UI Testing\n\nThe quick brown fox jumped over the lazy dog."
-        file.outputStream().writer().use { it.write(markdownText) }
-        val activityResult = Instrumentation.ActivityResult(RESULT_OK, Intent().apply {
-            data = Uri.fromFile(file)
-        })
-        intending(hasAction(Intent.ACTION_OPEN_DOCUMENT)).respondWith(activityResult)
-        openActionBarOverflowOrOptionsMenu(getApplicationContext())
-        onView(withText(R.string.action_open)).perform(click())
-        Thread.sleep(500)
-        onView(withId(R.id.markdown_edit)).check(matches(withText(markdownText)))
-        onView(withText("temp.md")).check(matches(withParent(withId(R.id.toolbar))))
-    }
-
-    @Test
-    fun loadMarkdownWithContentUriTest() {
-        val markdownText = "# UI Testing\n\nThe quick brown fox jumped over the lazy dog."
-        file.outputStream().writer().use { it.write(markdownText) }
-        val activityResult = Instrumentation.ActivityResult(RESULT_OK, Intent().apply {
-            data = FileProvider.getUriForFile(getApplicationContext(), "com.wbrawner.simplemarkdown.fileprovider", file)
-        })
-        intending(hasAction(Intent.ACTION_OPEN_DOCUMENT)).respondWith(activityResult)
-        openActionBarOverflowOrOptionsMenu(getApplicationContext())
-        onView(withText(R.string.action_open)).perform(click())
-        Thread.sleep(500)
-        onView(withId(R.id.markdown_edit)).check(matches(withText(markdownText)))
-        onView(withText("temp.md")).check(matches(withParent(withId(R.id.toolbar))))
-    }
-
-
-    @Test
-    fun openEditAndSaveMarkdownTest() {
-        val markdownText = "# UI Testing\n\nThe quick brown fox jumped over the lazy dog."
-        file.outputStream().writer().use { it.write(markdownText) }
-        val activityResult = Instrumentation.ActivityResult(RESULT_OK, Intent().apply {
-            data = Uri.fromFile(file)
-        })
-        intending(hasAction(Intent.ACTION_OPEN_DOCUMENT)).respondWith(activityResult)
-        openActionBarOverflowOrOptionsMenu(getApplicationContext())
-        onView(withText(R.string.action_open)).perform(click())
-        Thread.sleep(500)
-        onView(withId(R.id.markdown_edit)).check(matches(withText(markdownText)))
-        onView(withText("temp.md")).check(matches(withParent(withId(R.id.toolbar))))
-        val additionalText = "# More info\n\nThis is some additional text"
-        onView(withId(R.id.markdown_edit)).perform(
-                clearText(),
-                typeText(additionalText)
-        )
-        openActionBarOverflowOrOptionsMenu(getApplicationContext())
-        onView(withText(R.string.action_save)).perform(click())
-        Thread.sleep(500)
-        onView(withText(getApplicationContext<Context>().getString(R.string.file_saved, "temp.md")))
-        assertEquals(additionalText, file.inputStream().reader().use(Reader::readText))
-        onView(withText("temp.md")).check(matches(withParent(withId(R.id.toolbar))))
-    }
-}

app/src/androidTest/kotlin/com/wbrawner/simplemarkdown/HelpTest.kt

@@ -0,0 +1,27 @@
+package com.wbrawner.simplemarkdown
+
+import androidx.compose.ui.test.junit4.createEmptyComposeRule
+import androidx.test.core.app.ActivityScenario
+import com.wbrawner.simplemarkdown.robot.onMainScreen
+import org.junit.Rule
+import org.junit.Test
+
+class HelpTest {
+    @get:Rule
+    val composeRule = createEmptyComposeRule()
+
+    @Test
+    fun openHelpPageTest() {
+        ActivityScenario.launch(MainActivity::class.java)
+        onMainScreen(composeRule) {
+            checkTitleEquals("Untitled.md")
+            checkMarkdownEquals("")
+            openDrawer()
+        } onNavigationDrawer {
+            openHelpPage()
+        } onHelpScreen {
+            checkTitleEquals("Help")
+            verifyH1("Headings/Titles")
+        }
+    }
+}

app/src/androidTest/kotlin/com/wbrawner/simplemarkdown/MarkdownTests.kt

@@ -0,0 +1,254 @@
+package com.wbrawner.simplemarkdown
+
+import android.app.Activity.RESULT_OK
+import android.app.Instrumentation
+import android.content.Context
+import android.content.Intent
+import android.net.Uri
+import androidx.compose.ui.test.junit4.createEmptyComposeRule
+import androidx.core.content.FileProvider
+import androidx.test.core.app.ActivityScenario
+import androidx.test.core.app.ApplicationProvider.getApplicationContext
+import androidx.test.espresso.intent.Intents.intending
+import androidx.test.espresso.intent.matcher.IntentMatchers.hasAction
+import androidx.test.espresso.intent.rule.IntentsRule
+import androidx.test.espresso.matcher.ViewMatchers.*
+import androidx.test.platform.app.InstrumentationRegistry.getInstrumentation
+import com.wbrawner.simplemarkdown.robot.onMainScreen
+import kotlinx.coroutines.test.runTest
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertTrue
+import org.junit.Before
+import org.junit.Rule
+import org.junit.Test
+import java.io.File
+import java.io.Reader
+
+class MarkdownTests {
+
+    @get:Rule
+    val composeRule = createEmptyComposeRule()
+
+    @get:Rule
+    val intentsRule = IntentsRule()
+
+    private lateinit var file: File
+
+    @Before
+    fun setup() {
+        file = File(getApplicationContext<Context>().filesDir.absolutePath + "/tmp", "temp.md")
+        assertTrue(requireNotNull(file.parentFile).mkdirs())
+        file.delete()
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun openAppTest() {
+        val context = getInstrumentation().targetContext
+        context.packageManager
+            .getLaunchIntentForPackage(context.packageName)
+            .apply { context.startActivity(this) }
+    }
+
+    @Test
+    fun editAndPreviewMarkdownTest() {
+        ActivityScenario.launch(MainActivity::class.java)
+        onMainScreen(composeRule) {
+            typeMarkdown("# Header test")
+            checkMarkdownEquals("# Header test")
+            openPreview()
+        } onPreview {
+            verifyH1("Header test")
+        }
+    }
+
+    @Test
+    fun openThenNewMarkdownTest() {
+        val markdownText = "# UI Testing\n\nThe quick brown fox jumped over the lazy dog."
+        file.outputStream().writer().use { it.write(markdownText) }
+        val activityResult = Instrumentation.ActivityResult(RESULT_OK, Intent().apply {
+            data = Uri.fromFile(file)
+            addFlags(Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION)
+        })
+        intending(hasAction(Intent.ACTION_OPEN_DOCUMENT)).respondWith(activityResult)
+        ActivityScenario.launch(MainActivity::class.java)
+        onMainScreen(composeRule) {
+            openMenu()
+            clickOpenMenuItem()
+            checkMarkdownEquals(markdownText)
+            openMenu()
+            clickNewMenuItem()
+            verifyDialogIsNotShown()
+            checkMarkdownEquals("")
+        }
+    }
+
+    @Test
+    fun editThenNewMarkdownTest() {
+        ActivityScenario.launch(MainActivity::class.java)
+        val markdownText = "# UI Testing\n\nThe quick brown fox jumped over the lazy dog."
+        onMainScreen(composeRule) {
+            typeMarkdown(markdownText)
+            openMenu()
+            clickNewMenuItem()
+            verifyDialogIsShown("Would you like to save your changes?")
+            discardChanges()
+            checkMarkdownEquals("")
+        }
+    }
+
+    @Test
+    fun saveMarkdownWithFileUriTest() = runTest {
+        ActivityScenario.launch(MainActivity::class.java)
+        onMainScreen(composeRule) {
+            checkTitleEquals("Untitled.md")
+            val markdownText = "# UI Testing\n\nThe quick brown fox jumped over the lazy dog."
+            typeMarkdown(markdownText)
+            val activityResult = Instrumentation.ActivityResult(RESULT_OK, Intent().apply {
+                data = Uri.fromFile(file)
+            })
+            intending(hasAction(Intent.ACTION_CREATE_DOCUMENT)).respondWith(activityResult)
+            openMenu()
+            clickSaveMenuItem()
+            awaitIdle()
+            assertEquals(markdownText, file.inputStream().reader().use(Reader::readText))
+            checkTitleEquals("temp.md")
+        }
+    }
+
+    @Test
+    fun saveMarkdownWithContentUriTest() = runTest {
+        ActivityScenario.launch(MainActivity::class.java)
+        onMainScreen(composeRule) {
+            checkTitleEquals("Untitled.md")
+            val markdownText = "# UI Testing\n\nThe quick brown fox jumped over the lazy dog."
+            typeMarkdown(markdownText)
+            val activityResult = Instrumentation.ActivityResult(RESULT_OK, Intent().apply {
+                data = FileProvider.getUriForFile(
+                    getApplicationContext(),
+                    "${BuildConfig.APPLICATION_ID}.fileprovider",
+                    file
+                )
+            })
+            intending(hasAction(Intent.ACTION_CREATE_DOCUMENT)).respondWith(activityResult)
+            openMenu()
+            clickSaveMenuItem()
+            awaitIdle()
+            assertEquals(markdownText, file.inputStream().reader().use(Reader::readText))
+            checkTitleEquals("temp.md")
+        }
+    }
+
+    @Test
+    fun loadMarkdownWithFileUriTest() = runTest {
+        ActivityScenario.launch(MainActivity::class.java)
+        onMainScreen(composeRule) {
+            checkTitleEquals("Untitled.md")
+            val markdownText = "# UI Testing\n\nThe quick brown fox jumped over the lazy dog."
+            file.outputStream().writer().use { it.write(markdownText) }
+            val activityResult = Instrumentation.ActivityResult(RESULT_OK, Intent().apply {
+                data = Uri.fromFile(file)
+            })
+            intending(hasAction(Intent.ACTION_OPEN_DOCUMENT)).respondWith(activityResult)
+            openMenu()
+            clickOpenMenuItem()
+            awaitIdle()
+            checkMarkdownEquals(markdownText)
+            checkTitleEquals("temp.md")
+        }
+    }
+
+    @Test
+    fun loadMarkdownWithContentUriTest() = runTest {
+        ActivityScenario.launch(MainActivity::class.java)
+        onMainScreen(composeRule) {
+            checkTitleEquals("Untitled.md")
+            val markdownText = "# UI Testing\n\nThe quick brown fox jumped over the lazy dog."
+            file.outputStream().writer().use { it.write(markdownText) }
+            val activityResult = Instrumentation.ActivityResult(RESULT_OK, Intent().apply {
+                data = FileProvider.getUriForFile(
+                    getApplicationContext(),
+                    "${BuildConfig.APPLICATION_ID}.fileprovider",
+                    file
+                )
+            })
+            intending(hasAction(Intent.ACTION_OPEN_DOCUMENT)).respondWith(activityResult)
+            openMenu()
+            clickOpenMenuItem()
+            awaitIdle()
+            checkMarkdownEquals(markdownText)
+            checkTitleEquals("temp.md")
+        }
+    }
+
+    @Test
+    fun launchWithContentUriTest() = runTest {
+        val markdownText = "# UI Testing\n\nThe quick brown fox jumped over the lazy dog."
+        file.outputStream().writer().use { it.write(markdownText) }
+        val fileUri = FileProvider.getUriForFile(
+            getApplicationContext(),
+            "${BuildConfig.APPLICATION_ID}.fileprovider",
+            file
+        )
+        ActivityScenario.launch<MainActivity>(
+            Intent(
+                Intent.ACTION_VIEW,
+                fileUri,
+                getInstrumentation().targetContext,
+                MainActivity::class.java
+            )
+        )
+        onMainScreen(composeRule) {
+            awaitIdle()
+            checkMarkdownEquals(markdownText)
+            checkTitleEquals("temp.md")
+        }
+    }
+
+    @Test
+    fun openEditAndSaveMarkdownTest() = runTest {
+        val markdownText = "# UI Testing\n\nThe quick brown fox jumped over the lazy dog."
+        file.outputStream().writer().use { it.write(markdownText) }
+        val activityResult = Instrumentation.ActivityResult(RESULT_OK, Intent().apply {
+            data = Uri.fromFile(file)
+        })
+        intending(hasAction(Intent.ACTION_OPEN_DOCUMENT)).respondWith(activityResult)
+        ActivityScenario.launch(MainActivity::class.java)
+        onMainScreen(composeRule) {
+            checkTitleEquals("Untitled.md")
+            openMenu()
+            clickOpenMenuItem()
+            awaitIdle()
+            verifyTextIsShown("Successfully loaded temp.md")
+            checkMarkdownEquals(markdownText)
+            checkTitleEquals("temp.md")
+            val additionalText = "# More info\n\nThis is some additional text"
+            typeMarkdown(additionalText)
+            openMenu()
+            clickSaveMenuItem()
+            awaitIdle()
+            verifyTextIsShown("Successfully saved temp.md")
+            assertEquals(additionalText, file.inputStream().reader().use(Reader::readText))
+            checkTitleEquals("temp.md")
+        }
+    }
+
+    @Test
+    fun editAndViewHelpMarkdownTest() = runTest {
+        ActivityScenario.launch(MainActivity::class.java)
+        onMainScreen(composeRule) {
+            checkTitleEquals("Untitled.md")
+            typeMarkdown("# Header test")
+            checkMarkdownEquals("# Header test")
+            openDrawer()
+        } onNavigationDrawer {
+            openHelpPage()
+        } onHelpScreen {
+            checkTitleEquals("Help")
+            verifyH1("Headings/Titles")
+            pressBack()
+        } onMainScreen {
+            checkMarkdownEquals("# Header test")
+        }
+    }
+}

app/src/androidTest/kotlin/com/wbrawner/simplemarkdown/TestUtils.kt

@@ -0,0 +1,29 @@
+package com.wbrawner.simplemarkdown
+
+import androidx.compose.ui.test.SemanticsNodeInteraction
+import androidx.compose.ui.test.assertIsDisplayed
+import androidx.compose.ui.test.assertIsNotDisplayed
+
+private const val ASSERTION_TIMEOUT = 5_000L
+
+fun SemanticsNodeInteraction.waitUntilIsDisplayed() = waitUntil {
+    assertIsDisplayed()
+}
+
+fun SemanticsNodeInteraction.waitUntilIsNotDisplayed() = waitUntil {
+    assertIsNotDisplayed()
+}
+
+fun <T> SemanticsNodeInteraction.waitUntil(assertion: SemanticsNodeInteraction.() -> T): T {
+    val start = System.currentTimeMillis()
+    lateinit var assertionError: AssertionError
+    while (System.currentTimeMillis() - start < ASSERTION_TIMEOUT) {
+        try {
+            return assertion()
+        } catch (e: AssertionError) {
+            assertionError = e
+            Thread.sleep(10)
+        }
+    }
+    throw assertionError
+}

app/src/androidTest/kotlin/com/wbrawner/simplemarkdown/robot/MainScreenRobot.kt

@@ -0,0 +1,80 @@
+package com.wbrawner.simplemarkdown.robot
+
+import androidx.compose.ui.semantics.SemanticsProperties
+import androidx.compose.ui.semantics.getOrNull
+import androidx.compose.ui.test.SemanticsMatcher
+import androidx.compose.ui.test.assert
+import androidx.compose.ui.test.hasAnyDescendant
+import androidx.compose.ui.test.hasClickAction
+import androidx.compose.ui.test.hasContentDescription
+import androidx.compose.ui.test.hasSetTextAction
+import androidx.compose.ui.test.hasText
+import androidx.compose.ui.test.isDialog
+import androidx.compose.ui.test.junit4.ComposeTestRule
+import androidx.compose.ui.test.onNodeWithContentDescription
+import androidx.compose.ui.test.onNodeWithText
+import androidx.compose.ui.test.performClick
+import androidx.compose.ui.test.performTextReplacement
+import com.wbrawner.simplemarkdown.waitUntil
+import com.wbrawner.simplemarkdown.waitUntilIsDisplayed
+import com.wbrawner.simplemarkdown.waitUntilIsNotDisplayed
+import kotlinx.coroutines.CoroutineScope
+
+fun onMainScreen(composeRule: ComposeTestRule, block: MainScreenRobot.() -> Unit) =
+    MainScreenRobot(composeRule).apply(block)
+
+@Suppress("UnusedReceiverParameter") // Used to avoid import ambiguity for tests
+suspend fun CoroutineScope.onMainScreen(
+    composeRule: ComposeTestRule,
+    block: suspend MainScreenRobot.() -> Unit
+): MainScreenRobot {
+    val mainScreenRobot = MainScreenRobot(composeRule)
+    block.invoke(mainScreenRobot)
+    return mainScreenRobot
+}
+
+class MainScreenRobot(private val composeRule: ComposeTestRule) :
+    TopAppBarRobot by ComposeTopAppBarRobot(composeRule) {
+
+    fun typeMarkdown(markdown: String) = composeRule.onNode(hasSetTextAction())
+        .performTextReplacement(markdown)
+
+    fun checkMarkdownEquals(markdown: String) {
+        val markdownMatcher = SemanticsMatcher("Markdown = [$markdown]") {
+            it.config.getOrNull(SemanticsProperties.EditableText)?.text == markdown
+        }
+        composeRule.onNode(hasSetTextAction()).waitUntil {
+            assert(markdownMatcher)
+        }
+    }
+
+    fun openPreview() = composeRule.onNodeWithText("Preview").performClick()
+
+    fun openMenu() = composeRule.onNodeWithContentDescription("Editor Actions").performClick()
+
+    fun clickOpenMenuItem() = composeRule.onNodeWithText("Open").performClick()
+
+    fun clickNewMenuItem() = composeRule.onNodeWithText("New").performClick()
+
+    fun clickSaveMenuItem() = composeRule.onNodeWithText("Save").performClick()
+
+    fun verifyDialogIsShown(text: String) =
+        composeRule.onNode(isDialog().and(hasAnyDescendant(hasText(text)))).waitUntilIsDisplayed()
+
+    fun verifyDialogIsNotShown() = composeRule.onNode(isDialog()).waitUntilIsNotDisplayed()
+
+    fun discardChanges() = composeRule.onNodeWithText("No").performClick()
+
+    fun verifyTextIsShown(text: String) = composeRule.onNodeWithText(text).waitUntilIsDisplayed()
+
+    fun openDrawer() = composeRule.onNode(hasClickAction() and hasContentDescription("Main Menu"))
+        .waitUntilIsDisplayed()
+        .performClick()
+
+    suspend fun awaitIdle() = composeRule.awaitIdle()
+
+    infix fun onPreview(block: WebViewRobot.() -> Unit) = EspressoWebViewRobot().apply(block)
+
+    infix fun onNavigationDrawer(block: NavigationDrawerRobot.() -> Unit): NavigationDrawerRobot =
+        NavigationDrawerRobot(composeRule).apply(block = block)
+}

app/src/androidTest/kotlin/com/wbrawner/simplemarkdown/robot/MarkdownInfoScreenRobot.kt

@@ -0,0 +1,14 @@
+package com.wbrawner.simplemarkdown.robot
+
+import androidx.compose.ui.test.junit4.ComposeTestRule
+import androidx.compose.ui.test.onNodeWithContentDescription
+import androidx.compose.ui.test.performClick
+
+class MarkdownInfoScreenRobot(private val composeTestRule: ComposeTestRule) :
+    TopAppBarRobot by ComposeTopAppBarRobot(composeTestRule),
+    WebViewRobot by EspressoWebViewRobot() {
+    fun pressBack() = composeTestRule.onNodeWithContentDescription("Back").performClick()
+
+    infix fun onMainScreen(block: MainScreenRobot.() -> Unit) =
+        MainScreenRobot(composeTestRule).apply(block)
+}

app/src/androidTest/kotlin/com/wbrawner/simplemarkdown/robot/NavigationDrawerRobot.kt

@@ -0,0 +1,16 @@
+package com.wbrawner.simplemarkdown.robot
+
+import androidx.compose.ui.test.hasClickAction
+import androidx.compose.ui.test.hasText
+import androidx.compose.ui.test.junit4.ComposeTestRule
+import androidx.compose.ui.test.performClick
+import com.wbrawner.simplemarkdown.waitUntilIsDisplayed
+
+class NavigationDrawerRobot(private val composeTestRule: ComposeTestRule) {
+    fun openHelpPage() = composeTestRule.onNode(hasClickAction() and hasText("Help"))
+        .waitUntilIsDisplayed()
+        .performClick()
+
+    infix fun onHelpScreen(block: MarkdownInfoScreenRobot.() -> Unit) =
+        MarkdownInfoScreenRobot(composeTestRule).apply(block)
+}

app/src/androidTest/kotlin/com/wbrawner/simplemarkdown/robot/TopAppBarRobot.kt

@@ -0,0 +1,24 @@
+package com.wbrawner.simplemarkdown.robot
+
+import androidx.compose.ui.test.SemanticsNodeInteraction
+import androidx.compose.ui.test.hasAnySibling
+import androidx.compose.ui.test.hasContentDescription
+import androidx.compose.ui.test.hasText
+import androidx.compose.ui.test.junit4.ComposeTestRule
+import com.wbrawner.simplemarkdown.waitUntilIsDisplayed
+
+interface TopAppBarRobot {
+    fun checkTitleEquals(title: String): SemanticsNodeInteraction
+}
+
+class ComposeTopAppBarRobot(private val composeTestRule: ComposeTestRule) : TopAppBarRobot {
+    override fun checkTitleEquals(title: String) =
+        composeTestRule.onNode(
+            hasAnySibling(
+                hasContentDescription("Main Menu") or hasContentDescription(
+                    "Back"
+                )
+            ).and(hasText(title))
+        )
+            .waitUntilIsDisplayed()
+}

app/src/androidTest/kotlin/com/wbrawner/simplemarkdown/robot/WebViewRobot.kt

@@ -0,0 +1,24 @@
+package com.wbrawner.simplemarkdown.robot
+
+import android.webkit.WebView
+import androidx.test.espresso.matcher.ViewMatchers.isAssignableFrom
+import androidx.test.espresso.web.assertion.WebViewAssertions.webMatches
+import androidx.test.espresso.web.sugar.Web.onWebView
+import androidx.test.espresso.web.webdriver.DriverAtoms.findElement
+import androidx.test.espresso.web.webdriver.DriverAtoms.getText
+import androidx.test.espresso.web.webdriver.Locator
+import org.hamcrest.CoreMatchers.containsString
+
+interface WebViewRobot {
+    fun verifyH1(text: String)
+}
+
+class EspressoWebViewRobot : WebViewRobot {
+    private fun findWebView() = onWebView(isAssignableFrom(WebView::class.java))
+        .forceJavascriptEnabled()
+
+    override fun verifyH1(text: String) {
+        findWebView().withElement(findElement(Locator.TAG_NAME, "h1"))
+            .check(webMatches(getText(), containsString(text)))
+    }
+}

app/src/free/java/com/wbrawner/simplemarkdown/utility/SupportLinkProvider.kt

@@ -1,9 +0,0 @@
-package com.wbrawner.simplemarkdown.utility
-
-import android.app.Activity
-import androidx.lifecycle.MutableLiveData
-import com.google.android.material.button.MaterialButton
-
-class SupportLinkProvider(@Suppress("unused") private val activity: Activity) {
-    val supportLinks = MutableLiveData<List<MaterialButton>>()
-}

app/src/main/AndroidManifest.xml

@@ -1,26 +1,23 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    package="com.wbrawner.simplemarkdown">
+    xmlns:tools="http://schemas.android.com/tools">
 
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.INTERNET" />
-    <uses-permission android:name="com.android.vending.BILLING" />
 
     <application
         android:name=".MarkdownApplication"
         android:allowBackup="true"
+        android:enableOnBackInvokedCallback="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:resizeableActivity="true"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
-        android:theme="@style/AppTheme"
+        android:theme="@style/Theme.App.Starting"
         tools:ignore="AllowBackup"
-        tools:targetApi="n">
-        <activity
-            android:name=".view.activity.SplashActivity"
-            android:theme="@style/AppTheme.Splash"
+        tools:targetApi="tiramisu">
+        <activity android:name=".MainActivity"
+            android:exported="true"
             android:label="@string/app_name_short">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
@@ -42,7 +39,7 @@
                 <data android:host="*" />
             </intent-filter>
         </activity>
-        <activity android:name=".view.activity.MainActivity" />
+
         <provider
             android:name="androidx.core.content.FileProvider"
             android:authorities="${applicationId}.fileprovider"
@@ -52,13 +49,6 @@
                 android:name="android.support.FILE_PROVIDER_PATHS"
                 android:resource="@xml/file_paths" />
         </provider>
-
-        <meta-data
-            android:name="io.sentry.dsn"
-            android:value="${sentryDsn}" />
-        <meta-data
-            android:name="io.sentry.auto-init"
-            android:value="false" />
     </application>
 
 </manifest>

app/src/main/assets/Cheatsheet.md

@@ -90,11 +90,11 @@ data 1|data 2|data 3
 data 1|data 2|data 3
 ```
 
-Left Content|Center Content|Right Content
-:--------|:--------:|--------:
-data 1|data 2|data 3
-data 1|data 2|data 3
-data 1|data 2|data 3
+| Left Content | Center Content | Right Content |
+|:-------------|:--------------:|--------------:|
+| data 1       |     data 2     |        data 3 |
+| data 1       |     data 2     |        data 3 |
+| data 1       |     data 2     |        data 3 |
 
 ### Images
 
@@ -116,7 +116,7 @@ In addition to the monospace inline element, code blocks can be created by inden
 
 Or by wrapping the code in three backticks (\`\`\`):
 
-```
+```javascript
 function helloWorld() {
     console.log("Hello, world!")
 }

app/src/main/assets/Privacy Policy.md

@@ -1,10 +1,10 @@
-First and foremost, Simple Markdown DOES NOT collect any personally identifiable information. The
-internet access permission is requested primarily for retrieving images from the internet in 
-case you embed them in your markdown, but it also allows me to send automated error and crash 
-reports to myself whenever the app runs into an issue. These automated reports are powered by my own
-self-hosted version of [Sentry] (https://sentry.io/), which is a free and open source error
-reporting solution. These error reports are used exclusively for fixing problems that occur while 
-you're using the app. For more information on the kinds of data that may be sent in these automated 
-error reports, please see the [relevant documentation](https://docs.sentry.io/platforms/android/#context)
-on Sentry's website. If you would like to opt-out of these error reports, please visit the in-app
-settings page to disable the toggle for error reports. 
+The internet access permission is requested primarily for retrieving images from the internet in
+ case you embed them in your markdown, but it also allows me to send automated error and crash
+ reports to myself whenever the app runs into an issue. These error reports are opt-out, and are
+ powered by [Firebase Crashlytics](https://firebase.google.com/docs/crashlytics/), which is a
+ free error reporting solution provided by Google. These error reports are used exclusively for
+ fixing problems that occur while you're using the app, along with some analytics info like how
+ long you use the app for, how often, and which features of the app you use. This helps me to
+ determine how to spend my very limited time on building out new features. I'll have to defer to
+  [Google's Privacy Policy](https://policies.google.com/privacy) to explain how they handle the
+  data. As for me, I don't knowingly or willingly sell or share your data.

app/src/main/java/com/wbrawner/simplemarkdown/MainActivity.kt

@@ -0,0 +1,187 @@
+package com.wbrawner.simplemarkdown
+
+import android.app.ComponentCaller
+import android.content.Intent
+import android.os.Build
+import android.os.Bundle
+import androidx.activity.compose.setContent
+import androidx.activity.viewModels
+import androidx.annotation.StringRes
+import androidx.appcompat.app.AppCompatActivity
+import androidx.appcompat.app.AppCompatDelegate
+import androidx.compose.animation.AnimatedContentTransitionScope
+import androidx.compose.animation.core.EaseIn
+import androidx.compose.animation.core.LinearEasing
+import androidx.compose.animation.core.tween
+import androidx.compose.animation.fadeIn
+import androidx.compose.animation.scaleOut
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.automirrored.filled.Help
+import androidx.compose.material.icons.filled.Edit
+import androidx.compose.material.icons.filled.Favorite
+import androidx.compose.material.icons.filled.Info
+import androidx.compose.material.icons.filled.PrivacyTip
+import androidx.compose.material.icons.filled.Settings
+import androidx.compose.material3.windowsizeclass.ExperimentalMaterial3WindowSizeClassApi
+import androidx.compose.material3.windowsizeclass.WindowWidthSizeClass
+import androidx.compose.material3.windowsizeclass.calculateWindowSizeClass
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.res.stringResource
+import androidx.core.app.ActivityCompat
+import androidx.core.splashscreen.SplashScreen.Companion.installSplashScreen
+import androidx.core.view.WindowCompat
+import androidx.lifecycle.lifecycleScope
+import androidx.navigation.compose.NavHost
+import androidx.navigation.compose.composable
+import androidx.navigation.compose.rememberNavController
+import com.wbrawner.simplemarkdown.MarkdownApplication.Companion.fileHelper
+import com.wbrawner.simplemarkdown.MarkdownApplication.Companion.preferenceHelper
+import com.wbrawner.simplemarkdown.ui.MainScreen
+import com.wbrawner.simplemarkdown.ui.MarkdownInfoScreen
+import com.wbrawner.simplemarkdown.ui.SettingsScreen
+import com.wbrawner.simplemarkdown.ui.SupportScreen
+import com.wbrawner.simplemarkdown.ui.theme.SimpleMarkdownTheme
+import com.wbrawner.simplemarkdown.utility.Preference
+import kotlinx.coroutines.launch
+import org.acra.ACRA
+
+class MainActivity : AppCompatActivity(), ActivityCompat.OnRequestPermissionsResultCallback {
+    private val viewModel: MarkdownViewModel by viewModels {
+        MarkdownViewModel.factory(
+            fileHelper,
+            preferenceHelper
+        )
+    }
+
+    @OptIn(ExperimentalMaterial3WindowSizeClassApi::class)
+    override fun onCreate(savedInstanceState: Bundle?) {
+        installSplashScreen()
+        super.onCreate(savedInstanceState)
+        WindowCompat.setDecorFitsSystemWindows(window, false)
+        setContent {
+            val autosaveEnabled by preferenceHelper.observe<Boolean>(Preference.AUTOSAVE_ENABLED)
+                .collectAsState()
+            val darkModePreference by preferenceHelper.observe<String>(Preference.DARK_MODE)
+                .collectAsState()
+            LaunchedEffect(darkModePreference) {
+                val darkMode = when {
+                    darkModePreference.equals(
+                        getString(R.string.pref_value_light),
+                        ignoreCase = true
+                    ) -> AppCompatDelegate.MODE_NIGHT_NO
+
+                    darkModePreference.equals(
+                        getString(R.string.pref_value_dark),
+                        ignoreCase = true
+                    ) -> AppCompatDelegate.MODE_NIGHT_YES
+
+                    else -> {
+                        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.P) {
+                            AppCompatDelegate.MODE_NIGHT_AUTO_BATTERY
+                        } else {
+                            AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM
+                        }
+                    }
+                }
+                AppCompatDelegate.setDefaultNightMode(darkMode)
+            }
+            val errorReporterPreference by preferenceHelper.observe<Boolean>(Preference.ERROR_REPORTS_ENABLED)
+                .collectAsState()
+            LaunchedEffect(errorReporterPreference) {
+                ACRA.errorReporter.setEnabled(errorReporterPreference)
+            }
+            val intentData = remember(intent) { intent?.data }
+            LaunchedEffect(intentData) {
+                viewModel.load(intentData?.toString())
+            }
+            val windowSizeClass = calculateWindowSizeClass(this)
+            SimpleMarkdownTheme {
+                val navController = rememberNavController()
+                NavHost(
+                    navController = navController,
+                    startDestination = Route.EDITOR.path,
+                    enterTransition = {
+                        fadeIn(
+                            animationSpec = tween(
+                                300, easing = LinearEasing
+                            )
+                        ) + slideIntoContainer(
+                            animationSpec = tween(300, easing = EaseIn),
+                            towards = AnimatedContentTransitionScope.SlideDirection.Start
+                        )
+                    },
+                    popEnterTransition = { fadeIn() },
+                    popExitTransition = {
+                        scaleOut(targetScale = 0.9f) + slideOutOfContainer(
+                            animationSpec = tween(300, easing = EaseIn),
+                            towards = AnimatedContentTransitionScope.SlideDirection.End
+                        )
+                    }
+                ) {
+                    composable(Route.EDITOR.path) {
+                        MainScreen(
+                            navController = navController,
+                            viewModel = viewModel,
+                            enableWideLayout = windowSizeClass.widthSizeClass == WindowWidthSizeClass.Expanded,
+                            enableAutosave = autosaveEnabled,
+                        )
+                    }
+                    composable(Route.SETTINGS.path) {
+                        SettingsScreen(navController = navController, preferenceHelper)
+                    }
+                    composable(Route.SUPPORT.path) {
+                        SupportScreen(navController = navController)
+                    }
+                    composable(Route.HELP.path) {
+                        MarkdownInfoScreen(
+                            title = stringResource(Route.HELP.title),
+                            file = "Cheatsheet.md",
+                            navController = navController
+                        )
+                    }
+                    composable(Route.ABOUT.path) {
+                        MarkdownInfoScreen(
+                            title = stringResource(Route.ABOUT.title),
+                            file = "Libraries.md",
+                            navController = navController
+                        )
+                    }
+                    composable(Route.PRIVACY.path) {
+                        MarkdownInfoScreen(
+                            title = stringResource(Route.PRIVACY.title),
+                            file = "Privacy Policy.md",
+                            navController = navController
+                        )
+                    }
+                }
+            }
+        }
+    }
+
+    override fun onNewIntent(intent: Intent, caller: ComponentCaller) {
+        super.onNewIntent(intent, caller)
+        lifecycleScope.launch {
+            intent.data?.let {
+                viewModel.load(it.toString())
+            }
+        }
+    }
+}
+
+enum class Route(
+    val path: String,
+    @StringRes
+    val title: Int,
+    val icon: ImageVector
+) {
+    EDITOR("/", R.string.title_editor, Icons.Default.Edit),
+    SETTINGS("/settings", R.string.title_settings, Icons.Default.Settings),
+    SUPPORT("/support", R.string.support_title, Icons.Default.Favorite),
+    HELP("/help", R.string.title_help, Icons.AutoMirrored.Filled.Help),
+    ABOUT("/about", R.string.title_about, Icons.Default.Info),
+    PRIVACY("/privacy", R.string.action_privacy, Icons.Default.PrivacyTip),
+}

app/src/main/java/com/wbrawner/simplemarkdown/MarkdownApplication.kt

@@ -2,19 +2,24 @@ package com.wbrawner.simplemarkdown
 
 import android.app.Application
 import android.os.StrictMode
-import androidx.preference.PreferenceManager
-import com.wbrawner.simplemarkdown.utility.ErrorHandler
-import com.wbrawner.simplemarkdown.utility.SentryErrorHandler
+import com.wbrawner.simplemarkdown.core.ErrorReporterTree
+import com.wbrawner.simplemarkdown.utility.AndroidFileHelper
+import com.wbrawner.simplemarkdown.utility.AndroidPreferenceHelper
+import com.wbrawner.simplemarkdown.utility.FileHelper
+import com.wbrawner.simplemarkdown.utility.PersistentTree
+import com.wbrawner.simplemarkdown.utility.PreferenceHelper
+import com.wbrawner.simplemarkdown.utility.ReviewHelper
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import timber.log.Timber
+import java.io.File
 
 class MarkdownApplication : Application() {
-    val errorHandler: ErrorHandler by lazy {
-        SentryErrorHandler()
-    }
+
+    private val coroutineScope = CoroutineScope(Dispatchers.Default)
 
     override fun onCreate() {
-        val enableErrorReports = PreferenceManager.getDefaultSharedPreferences(this)
-                .getBoolean(getString(R.string.error_reports_enabled), true)
-        errorHandler.init(this, enableErrorReports)
         if (BuildConfig.DEBUG) {
             StrictMode.setThreadPolicy(StrictMode.ThreadPolicy.Builder()
                     .detectAll()
@@ -24,7 +29,28 @@ class MarkdownApplication : Application() {
                     .detectAll()
                     .penaltyLog()
                     .build())
+            Timber.plant(Timber.DebugTree())
+            coroutineScope.launch {
+                try {
+                    Timber.plant(PersistentTree.create(coroutineScope, File(getExternalFilesDir(null), "logs")))
+                } catch (e: Exception) {
+                    Timber.e(e, "Unable to create PersistentTree")
+                }
+            }
+        }
+        coroutineScope.launch {
+            Timber.plant(ErrorReporterTree.create(this@MarkdownApplication))
         }
         super.onCreate()
+        ReviewHelper.init(this)
+        fileHelper = AndroidFileHelper(this)
+        preferenceHelper = AndroidPreferenceHelper(this)
+    }
+
+    companion object {
+        lateinit var fileHelper: FileHelper
+            private set
+        lateinit var preferenceHelper: PreferenceHelper
+            private set
     }
 }

app/src/main/java/com/wbrawner/simplemarkdown/MarkdownViewModel.kt

@@ -0,0 +1,321 @@
+package com.wbrawner.simplemarkdown
+
+import androidx.annotation.StringRes
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.AnnotatedString
+import androidx.compose.ui.text.SpanStyle
+import androidx.compose.ui.text.input.TextFieldValue
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.ViewModelProvider
+import androidx.lifecycle.viewModelScope
+import androidx.lifecycle.viewmodel.CreationExtras
+import com.wbrawner.simplemarkdown.core.LocalOnlyException
+import com.wbrawner.simplemarkdown.model.Readability
+import com.wbrawner.simplemarkdown.utility.FileHelper
+import com.wbrawner.simplemarkdown.utility.Preference
+import com.wbrawner.simplemarkdown.utility.PreferenceHelper
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.onEach
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+import kotlinx.coroutines.withContext
+import timber.log.Timber
+import java.io.File
+import java.net.URI
+
+data class EditorState(
+    val fileName: String = "Untitled.md",
+    val markdown: TextFieldValue = TextFieldValue(""),
+    val path: URI? = null,
+    val toast: ParameterizedText? = null,
+    val alert: AlertDialogModel? = null,
+    val saveCallback: (() -> Unit)? = null,
+    val lockSwiping: Boolean = false,
+    val enableReadability: Boolean = false,
+    val initialMarkdown: String = "",
+) {
+    val dirty: Boolean
+        get() = markdown.text != initialMarkdown
+}
+
+class MarkdownViewModel(
+    private val fileHelper: FileHelper,
+    private val preferenceHelper: PreferenceHelper
+) : ViewModel() {
+    private val _state = MutableStateFlow(EditorState())
+    val state = _state.asStateFlow()
+    private val saveMutex = Mutex()
+
+    init {
+        preferenceHelper.observe<Boolean>(Preference.LOCK_SWIPING)
+            .onEach {
+                updateState { copy(lockSwiping = it) }
+            }
+            .launchIn(viewModelScope)
+        preferenceHelper.observe<Boolean>(Preference.READABILITY_ENABLED)
+            .onEach {
+                updateState {
+                    copy(
+                        enableReadability = it,
+                        markdown = markdown.copy(annotatedString = markdown.text.annotate(it)),
+                    )
+                }
+            }
+            .launchIn(viewModelScope)
+    }
+
+    fun updateMarkdown(markdown: String?) = updateMarkdown(TextFieldValue(markdown.orEmpty()))
+
+    fun updateMarkdown(markdown: TextFieldValue) {
+        updateState {
+            copy(
+                markdown = markdown.copy(annotatedString = markdown.text.annotate(enableReadability)),
+            )
+        }
+    }
+
+    fun dismissToast() {
+        updateState { copy(toast = null) }
+    }
+
+    fun dismissAlert() {
+        updateState { copy(alert = null) }
+    }
+
+    private fun unsetSaveCallback() {
+        updateState { copy(saveCallback = null) }
+    }
+
+    suspend fun load(loadPath: String?) {
+        saveMutex.withLock {
+            val actualLoadPath = loadPath
+                ?.ifBlank { null }
+                ?: preferenceHelper[Preference.AUTOSAVE_URI]
+                    ?.let {
+                        val autosaveUri = it as? String
+                        if (autosaveUri.isNullOrBlank()) {
+                            preferenceHelper[Preference.AUTOSAVE_URI] = null
+                            null
+                        } else {
+                            Timber.d("Using uri from shared preferences: $it")
+                            autosaveUri
+                        }
+                    } ?: return
+            Timber.d("Loading file at $actualLoadPath")
+            try {
+                val uri = URI.create(actualLoadPath)
+                fileHelper.open(uri)
+                    ?.let { (name, content) ->
+                        updateState {
+                            copy(
+                                path = uri,
+                                fileName = name,
+                                markdown = TextFieldValue(content),
+                                initialMarkdown = content,
+                                toast = ParameterizedText(R.string.file_loaded, arrayOf(name))
+                            )
+                        }
+                        preferenceHelper[Preference.AUTOSAVE_URI] = actualLoadPath
+                    } ?: throw IllegalStateException("Opened file was null")
+            } catch (e: Exception) {
+                Timber.e(LocalOnlyException(e), "Failed to open file at path: $actualLoadPath")
+                updateState {
+                    copy(
+                        alert = AlertDialogModel(
+                            text = ParameterizedText(R.string.file_load_error),
+                            confirmButton = AlertDialogModel.ButtonModel(
+                                ParameterizedText(R.string.ok),
+                                onClick = ::dismissAlert
+                            )
+                        )
+                    )
+                }
+            }
+        }
+    }
+
+    suspend fun save(savePath: URI? = null, interactive: Boolean = true): Boolean =
+        saveMutex.withLock {
+            val actualSavePath = savePath
+                ?: _state.value.path
+                ?: run {
+                    Timber.w("Attempted to save file with empty path")
+                    if (interactive) {
+                        updateState {
+                            copy(saveCallback = ::unsetSaveCallback)
+                        }
+                    }
+                    return@withLock false
+                }
+            try {
+                Timber.i("Saving file to $actualSavePath...")
+                val currentState = _state.value
+                val name = fileHelper.save(actualSavePath, currentState.markdown.text)
+                updateState {
+                    currentState.copy(
+                        fileName = name,
+                        path = actualSavePath,
+                        initialMarkdown = currentState.markdown.text,
+                        toast = if (interactive) ParameterizedText(
+                            R.string.file_saved,
+                            arrayOf(name)
+                        ) else null
+                    )
+                }
+                Timber.i("Saved file $name to uri $actualSavePath")
+                Timber.i("Persisting autosave uri in shared prefs: $actualSavePath")
+                preferenceHelper[Preference.AUTOSAVE_URI] = actualSavePath
+                true
+            } catch (e: Exception) {
+                Timber.e(e, "Failed to save file to $actualSavePath")
+                updateState {
+                    copy(
+                        alert = AlertDialogModel(
+                            text = ParameterizedText(R.string.file_save_error),
+                            confirmButton = AlertDialogModel.ButtonModel(
+                                text = ParameterizedText(R.string.ok),
+                                onClick = ::dismissAlert
+                            )
+                        )
+                    )
+                }
+                false
+            }
+        }
+
+    suspend fun autosave() {
+        val isAutoSaveEnabled = preferenceHelper[Preference.AUTOSAVE_ENABLED] as Boolean
+        if (!isAutoSaveEnabled) {
+            Timber.i("Ignoring autosave as autosave not enabled")
+            return
+        }
+        if (!_state.value.dirty) {
+            Timber.d("Ignoring autosave as contents haven't changed")
+            return
+        }
+        if (saveMutex.isLocked) {
+            Timber.i("Ignoring autosave since manual save is already in progress")
+            return
+        }
+        Timber.d("Performing autosave")
+        if (!save(interactive = false)) {
+            withContext(Dispatchers.IO) {
+                // The user has left the app, with autosave enabled, and we don't already have a
+                // Uri for them or for some reason we were unable to save to the original Uri. In
+                // this case, we need to just save to internal file storage so that we can recover
+                val file = File(fileHelper.defaultDirectory, _state.value.fileName).toURI()
+                Timber.i("No cached uri for autosave, saving to $file instead")
+                // Here we call the fileHelper directly so that the file is still registered as dirty.
+                // This prevents the user from ending up in a scenario where they've autosaved the file
+                // to an internal storage location, thus marking it as not dirty, but no longer able to
+                // access the file if the accidentally go to create a new file without properly saving
+                // the current one
+                fileHelper.save(file, _state.value.markdown.text)
+                preferenceHelper[Preference.AUTOSAVE_URI] = file
+            }
+        }
+    }
+
+    fun reset(untitledFileName: String, force: Boolean = false) {
+        Timber.i("Resetting view model to default state")
+        if (!force && _state.value.dirty) {
+            updateState {
+                copy(alert = AlertDialogModel(
+                    text = ParameterizedText(R.string.prompt_save_changes),
+                    confirmButton = AlertDialogModel.ButtonModel(
+                        text = ParameterizedText(R.string.yes),
+                        onClick = {
+                            _state.value = _state.value.copy(
+                                saveCallback = {
+                                    reset(untitledFileName, false)
+                                }
+                            )
+                        }
+                    ),
+                    dismissButton = AlertDialogModel.ButtonModel(
+                        text = ParameterizedText(R.string.no),
+                        onClick = {
+                            reset(untitledFileName, true)
+                        }
+                    )
+                ))
+            }
+            return
+        }
+        updateState {
+            EditorState(
+                fileName = untitledFileName,
+                lockSwiping = preferenceHelper[Preference.LOCK_SWIPING] as Boolean
+            )
+        }
+        Timber.i("Removing autosave uri from shared prefs")
+        preferenceHelper[Preference.AUTOSAVE_URI] = null
+    }
+
+    fun setLockSwiping(enabled: Boolean) {
+        preferenceHelper[Preference.LOCK_SWIPING] = enabled
+    }
+
+    private fun updateState(block: EditorState.() -> EditorState) {
+        _state.value = _state.value.block()
+    }
+
+    companion object {
+        fun factory(
+            fileHelper: FileHelper,
+            preferenceHelper: PreferenceHelper
+        ): ViewModelProvider.Factory = object : ViewModelProvider.Factory {
+            @Suppress("UNCHECKED_CAST")
+            override fun <T : ViewModel> create(
+                modelClass: Class<T>,
+                extras: CreationExtras
+            ): T {
+                return MarkdownViewModel(fileHelper, preferenceHelper) as T
+            }
+        }
+    }
+}
+
+data class AlertDialogModel(
+    val text: ParameterizedText,
+    val confirmButton: ButtonModel,
+    val dismissButton: ButtonModel? = null
+) {
+    data class ButtonModel(val text: ParameterizedText, val onClick: () -> Unit)
+}
+
+data class ParameterizedText(@StringRes val text: Int, val params: Array<Any> = arrayOf()) {
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as ParameterizedText
+
+        if (text != other.text) return false
+        if (!params.contentEquals(other.params)) return false
+
+        return true
+    }
+
+    override fun hashCode(): Int {
+        var result = text
+        result = 31 * result + params.contentHashCode()
+        return result
+    }
+}
+
+private fun String.annotate(enableReadability: Boolean): AnnotatedString {
+    if (!enableReadability) return AnnotatedString(this)
+    val readability = Readability(this)
+    val annotated = AnnotatedString.Builder(this)
+    for (sentence in readability.sentences()) {
+        var color = Color.Transparent
+        if (sentence.syllableCount() > 25) color = Color(229, 232, 42, 100)
+        if (sentence.syllableCount() > 35) color = Color(193, 66, 66, 100)
+        annotated.addStyle(SpanStyle(background = color), sentence.start(), sentence.end())
+    }
+    return annotated.toAnnotatedString()
+}

app/src/main/java/com/wbrawner/simplemarkdown/model/Readability.kt

@@ -8,7 +8,7 @@ class Readability(private val content: String) {
         val list = ArrayList<Sentence>()
         var startOfSentance = 0
         var lineBuilder = StringBuilder()
-        for (i in 0 until content.length) {
+        for (i in content.indices) {
             val c = content[i] + ""
             if (DELIMS.contains(c)) {
                 list.add(Sentence(content, startOfSentance, i))

app/src/main/java/com/wbrawner/simplemarkdown/ui/MainScreen.kt

@@ -0,0 +1,369 @@
+package com.wbrawner.simplemarkdown.ui
+
+import android.content.Intent
+import android.net.Uri
+import androidx.activity.compose.rememberLauncherForActivityResult
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxHeight
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.imePadding
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.pager.HorizontalPager
+import androidx.compose.foundation.pager.rememberPagerState
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.MoreVert
+import androidx.compose.material.icons.filled.Share
+import androidx.compose.material3.AlertDialog
+import androidx.compose.material3.Checkbox
+import androidx.compose.material3.DropdownMenu
+import androidx.compose.material3.DropdownMenuItem
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Snackbar
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.SnackbarHostState
+import androidx.compose.material3.Tab
+import androidx.compose.material3.TabRow
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.material3.TopAppBarDefaults
+import androidx.compose.material3.TopAppBarScrollBehavior
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.State
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.input.nestedscroll.nestedScroll
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalSoftwareKeyboardController
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.input.TextFieldValue
+import androidx.compose.ui.unit.dp
+import androidx.core.content.ContextCompat.startActivity
+import androidx.navigation.NavController
+import com.wbrawner.simplemarkdown.AlertDialogModel
+import com.wbrawner.simplemarkdown.EditorState
+import com.wbrawner.simplemarkdown.MarkdownViewModel
+import com.wbrawner.simplemarkdown.ParameterizedText
+import com.wbrawner.simplemarkdown.R
+import com.wbrawner.simplemarkdown.Route
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.distinctUntilChanged
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.isActive
+import kotlinx.coroutines.launch
+import java.net.URI
+import kotlin.reflect.KProperty1
+
+@Composable
+fun MainScreen(
+    navController: NavController,
+    viewModel: MarkdownViewModel,
+    enableWideLayout: Boolean,
+    enableAutosave: Boolean,
+) {
+    val coroutineScope = rememberCoroutineScope()
+    val fileName by viewModel.collectAsState(EditorState::fileName, "")
+    val markdown by viewModel.collectAsState(EditorState::markdown, TextFieldValue(""))
+    val dirty by viewModel.collectAsState(EditorState::dirty, false)
+    val alert by viewModel.collectAsState(EditorState::alert, null)
+    val saveCallback by viewModel.collectAsState(EditorState::saveCallback, null)
+    val lockSwiping by viewModel.collectAsState(EditorState::lockSwiping, false)
+    LaunchedEffect(enableAutosave) {
+        if (!enableAutosave) return@LaunchedEffect
+        while (isActive) {
+            delay(500)
+            viewModel.autosave()
+        }
+    }
+    val toast by viewModel.collectAsState(EditorState::toast, null)
+    MainScreen(
+        dirty = dirty,
+        fileName = fileName,
+        markdown = markdown,
+        setMarkdown = viewModel::updateMarkdown,
+        lockSwiping = lockSwiping,
+        toggleLockSwiping = viewModel::setLockSwiping,
+        message = toast?.stringRes(),
+        dismissMessage = viewModel::dismissToast,
+        alert = alert,
+        dismissAlert = viewModel::dismissAlert,
+        navigate = {
+            navController.navigate(it.path)
+        },
+        navigateBack = { navController.popBackStack() },
+        loadFile = {
+            coroutineScope.launch {
+                viewModel.load(it.toString())
+            }
+        },
+        saveFile = {
+            coroutineScope.launch {
+                viewModel.save(it)
+            }
+        },
+        saveCallback = saveCallback,
+        reset = {
+            viewModel.reset("Untitled.md")
+        },
+        enableWideLayout = enableWideLayout,
+    )
+}
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+private fun MainScreen(
+    fileName: String = "Untitled.md",
+    dirty: Boolean = false,
+    markdown: TextFieldValue = TextFieldValue(""),
+    setMarkdown: (TextFieldValue) -> Unit = {},
+    lockSwiping: Boolean,
+    toggleLockSwiping: (Boolean) -> Unit,
+    message: String? = null,
+    dismissMessage: () -> Unit = {},
+    alert: AlertDialogModel? = null,
+    dismissAlert: () -> Unit = {},
+    navigate: (Route) -> Unit = {},
+    navigateBack: () -> Unit = {},
+    loadFile: (Uri?) -> Unit = {},
+    saveFile: (URI?) -> Unit = {},
+    saveCallback: (() -> Unit)? = null,
+    reset: () -> Unit = {},
+    enableWideLayout: Boolean = false,
+) {
+    val openFileLauncher =
+        rememberLauncherForActivityResult(ActivityResultContracts.OpenDocument()) {
+            loadFile(it)
+        }
+    val saveFileLauncher =
+        rememberLauncherForActivityResult(ActivityResultContracts.CreateDocument("text/*")) {
+            it?.let { uri -> saveFile(URI.create(uri.toString())) }
+        }
+    saveCallback?.let { callback ->
+        val launcher =
+            rememberLauncherForActivityResult(ActivityResultContracts.CreateDocument("text/*")) {
+                it?.let { uri -> saveFile(URI.create(uri.toString())) }
+                callback()
+            }
+        LaunchedEffect(callback) {
+            launcher.launch(fileName)
+        }
+    }
+
+    val snackBarState = remember { SnackbarHostState() }
+
+    LaunchedEffect(message) {
+        message?.let {
+            snackBarState.showSnackbar(it)
+            dismissMessage()
+        }
+    }
+
+    alert?.let {
+        AlertDialog(
+            onDismissRequest = dismissAlert,
+            confirmButton = {
+                TextButton(onClick = it.confirmButton.onClick) {
+                    Text(stringResource(it.confirmButton.text.text))
+                }
+            },
+            dismissButton = {
+                it.dismissButton?.let { dismissButton ->
+                    TextButton(onClick = dismissButton.onClick) {
+                        Text(dismissButton.text.stringRes())
+                    }
+                }
+            },
+            text = { Text(it.text.stringRes()) }
+        )
+    }
+    val scrollBehavior = TopAppBarDefaults.enterAlwaysScrollBehavior()
+    MarkdownNavigationDrawer(navigate) { drawerState ->
+        Scaffold(
+            topBar = {
+                val context = LocalContext.current
+                MarkdownTopAppBar(
+                    title = if (dirty) "$fileName*" else fileName,
+                    backAsUp = false,
+                    goBack = navigateBack,
+                    drawerState = drawerState,
+                    actions = {
+                        IconButton(onClick = {
+                            val shareIntent = Intent(Intent.ACTION_SEND)
+                            shareIntent.putExtra(Intent.EXTRA_TEXT, markdown.text)
+                            shareIntent.type = "text/plain"
+                            startActivity(
+                                context, Intent.createChooser(
+                                    shareIntent, context.getString(R.string.share_file)
+                                ), null
+                            )
+                        }) {
+                            Icon(imageVector = Icons.Default.Share, contentDescription = stringResource(R.string.action_share))
+                        }
+                        Box {
+                            var menuExpanded by remember { mutableStateOf(false) }
+                            IconButton(onClick = { menuExpanded = true }) {
+                                Icon(imageVector = Icons.Default.MoreVert, stringResource(R.string.action_editor_actions))
+                            }
+                            DropdownMenu(expanded = menuExpanded,
+                                onDismissRequest = { menuExpanded = false }) {
+                                DropdownMenuItem(text = { Text(stringResource(R.string.action_new)) }, onClick = {
+                                    menuExpanded = false
+                                    reset()
+                                })
+                                DropdownMenuItem(text = { Text(stringResource(R.string.action_open)) }, onClick = {
+                                    menuExpanded = false
+                                    openFileLauncher.launch(arrayOf("text/*"))
+                                })
+                                DropdownMenuItem(text = { Text(stringResource(R.string.action_save)) }, onClick = {
+                                    menuExpanded = false
+                                    saveFile(null)
+                                })
+                                DropdownMenuItem(text = { Text(stringResource(R.string.action_save_as )) },
+                                    onClick = {
+                                        menuExpanded = false
+                                        saveFileLauncher.launch(fileName)
+                                    })
+                                if (!enableWideLayout) {
+                                    DropdownMenuItem(text = {
+                                        Row(verticalAlignment = Alignment.CenterVertically) {
+                                            Text(stringResource(R.string.action_lock_swipe))
+                                            Checkbox(
+                                                checked = lockSwiping,
+                                                onCheckedChange = toggleLockSwiping
+                                            )
+                                        }
+                                    }, onClick = {
+                                        toggleLockSwiping(!lockSwiping)
+                                        menuExpanded = false
+                                    })
+                                }
+                            }
+                        }
+                    },
+                    scrollBehavior = scrollBehavior
+                )
+            },
+            snackbarHost = {
+                SnackbarHost(
+                    modifier = Modifier.imePadding(),
+                    hostState = snackBarState
+                ) {
+                    Snackbar(it)
+                }
+            }
+        ) { paddingValues ->
+            if (enableWideLayout) {
+                Row(
+                    modifier = Modifier
+                        .fillMaxSize()
+                        .padding(paddingValues)
+                ) {
+                    MarkdownTextField(
+                        modifier = Modifier
+                            .fillMaxHeight()
+                            .weight(1f),
+                        markdown = markdown,
+                        setMarkdown = setMarkdown,
+                    )
+                    Spacer(
+                        modifier = Modifier
+                            .fillMaxHeight()
+                            .width(1.dp)
+                            .background(color = MaterialTheme.colorScheme.primary)
+                    )
+                    MarkdownText(
+                        modifier = Modifier
+                            .fillMaxHeight()
+                            .weight(1f),
+                        markdown = markdown.text
+                    )
+                }
+            } else {
+                Column(
+                    modifier = Modifier
+                        .fillMaxSize()
+                        .padding(paddingValues)
+                ) {
+                    TabbedMarkdownEditor(
+                        markdown = markdown,
+                        setMarkdown = setMarkdown,
+                        lockSwiping = lockSwiping,
+                        scrollBehavior = scrollBehavior
+                    )
+                }
+            }
+        }
+    }
+}
+
+@Composable
+@OptIn(ExperimentalMaterial3Api::class)
+private fun TabbedMarkdownEditor(
+    markdown: TextFieldValue,
+    setMarkdown: (TextFieldValue) -> Unit,
+    lockSwiping: Boolean,
+    scrollBehavior: TopAppBarScrollBehavior
+) {
+    val coroutineScope = rememberCoroutineScope()
+    val pagerState = rememberPagerState { 2 }
+    TabRow(selectedTabIndex = pagerState.currentPage) {
+        Tab(text = { Text(stringResource(R.string.action_edit)) },
+            selected = pagerState.currentPage == 0,
+            onClick = { coroutineScope.launch { pagerState.animateScrollToPage(0) } })
+        Tab(text = { Text(stringResource(R.string.action_preview)) },
+            selected = pagerState.currentPage == 1,
+            onClick = { coroutineScope.launch { pagerState.animateScrollToPage(1) } })
+    }
+    HorizontalPager(
+        modifier = Modifier.fillMaxSize(1f), state = pagerState,
+        beyondViewportPageCount = 1,
+        userScrollEnabled = !lockSwiping
+    ) { page ->
+        val keyboardController = LocalSoftwareKeyboardController.current
+        LaunchedEffect(page) {
+            when (page) {
+                0 -> keyboardController?.show()
+                else -> keyboardController?.hide()
+            }
+        }
+        if (page == 0) {
+            MarkdownTextField(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .nestedScroll(scrollBehavior.nestedScrollConnection),
+                markdown = markdown,
+                setMarkdown = setMarkdown,
+            )
+        } else {
+            MarkdownText(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .nestedScroll(scrollBehavior.nestedScrollConnection),
+                markdown.text
+            )
+        }
+    }
+}
+
+@Composable
+fun <P> MarkdownViewModel.collectAsState(prop: KProperty1<EditorState, P>, initial: P): State<P> =
+    remember(prop) { state.map { prop.get(it) }.distinctUntilChanged() }.collectAsState(initial)
+
+@Composable
+fun ParameterizedText.stringRes() = stringResource(text, *params)

app/src/main/java/com/wbrawner/simplemarkdown/ui/MarkdownInfoScreen.kt

@@ -0,0 +1,43 @@
+package com.wbrawner.simplemarkdown.ui
+
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.Scaffold
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.navigation.NavController
+import com.wbrawner.simplemarkdown.utility.readAssetToString
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun MarkdownInfoScreen(
+    title: String,
+    file: String,
+    navController: NavController,
+) {
+    Scaffold(
+        topBar = {
+            MarkdownTopAppBar(
+                title = title,
+                goBack = { navController.popBackStack() },
+            )
+        }
+    ) { paddingValues ->
+        val context = LocalContext.current
+        val (markdown, setMarkdown) = remember { mutableStateOf("") }
+        LaunchedEffect(file) {
+            setMarkdown(context.assets.readAssetToString(file))
+        }
+        MarkdownText(
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(paddingValues),
+            markdown = markdown
+        )
+    }
+}

app/src/main/java/com/wbrawner/simplemarkdown/ui/MarkdownNavigationDrawer.kt

@@ -0,0 +1,80 @@
+package com.wbrawner.simplemarkdown.ui
+
+import androidx.activity.compose.BackHandler
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.size
+import androidx.compose.material3.DismissibleDrawerSheet
+import androidx.compose.material3.DismissibleNavigationDrawer
+import androidx.compose.material3.DrawerState
+import androidx.compose.material3.DrawerValue
+import androidx.compose.material3.Icon
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.NavigationDrawerItem
+import androidx.compose.material3.Text
+import androidx.compose.material3.rememberDrawerState
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.unit.dp
+import com.wbrawner.simplemarkdown.R
+import com.wbrawner.simplemarkdown.Route
+import kotlinx.coroutines.launch
+
+@Composable
+fun MarkdownNavigationDrawer(
+    navigate: (Route) -> Unit, content: @Composable (drawerState: DrawerState) -> Unit
+) {
+    val drawerState = rememberDrawerState(initialValue = DrawerValue.Closed)
+    val coroutineScope = rememberCoroutineScope()
+    BackHandler(enabled = drawerState.isOpen) {
+        coroutineScope.launch {
+            drawerState.close()
+        }
+    }
+    DismissibleNavigationDrawer(
+        gesturesEnabled = drawerState.isOpen,
+        drawerState = drawerState,
+        drawerContent = {
+            DismissibleDrawerSheet {
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    Icon(
+                        modifier = Modifier.size(96.dp),
+                        painter = painterResource(R.drawable.ic_launcher_foreground),
+                        contentDescription = null,
+                        tint = MaterialTheme.colorScheme.onSurface
+                    )
+                    Text(
+                        text = stringResource(R.string.app_name),
+                        style = MaterialTheme.typography.titleLarge
+                    )
+                }
+                Route.entries.forEach { route ->
+                    if (route == Route.EDITOR) {
+                        return@forEach
+                    }
+                    NavigationDrawerItem(
+                        icon = {
+                            Icon(imageVector = route.icon, contentDescription = null)
+                        },
+                        label = { Text(stringResource(route.title)) },
+                        selected = false,
+                        onClick = {
+                            navigate(route)
+                            coroutineScope.launch {
+                                drawerState.close()
+                            }
+                        }
+                    )
+                }
+            }
+        }) {
+        content(drawerState)
+    }
+}

app/src/main/java/com/wbrawner/simplemarkdown/ui/MarkdownText.kt

@@ -0,0 +1,125 @@
+package com.wbrawner.simplemarkdown.ui
+
+import android.annotation.SuppressLint
+import android.graphics.Color.TRANSPARENT
+import android.view.ViewGroup
+import android.webkit.WebView
+import android.widget.FrameLayout
+import androidx.compose.foundation.isSystemInDarkTheme
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.toArgb
+import androidx.compose.ui.viewinterop.AndroidView
+import com.wbrawner.simplemarkdown.BuildConfig
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import org.commonmark.ext.autolink.AutolinkExtension
+import org.commonmark.ext.front.matter.YamlFrontMatterExtension
+import org.commonmark.ext.gfm.strikethrough.StrikethroughExtension
+import org.commonmark.ext.gfm.tables.TablesExtension
+import org.commonmark.ext.heading.anchor.HeadingAnchorExtension
+import org.commonmark.ext.image.attributes.ImageAttributesExtension
+import org.commonmark.ext.task.list.items.TaskListItemsExtension
+import org.commonmark.parser.Parser
+import org.commonmark.renderer.html.HtmlRenderer
+
+private val markdownExtensions = listOf(
+    AutolinkExtension.create(),
+    StrikethroughExtension.create(),
+    TablesExtension.create(),
+    HeadingAnchorExtension.create(),
+    YamlFrontMatterExtension.create(),
+    ImageAttributesExtension.create(),
+    TaskListItemsExtension.create(),
+)
+
+private val markdownParser = Parser.builder()
+    .extensions(markdownExtensions)
+    .build()
+
+private val renderer = HtmlRenderer.builder()
+    .extensions(markdownExtensions)
+    .build()
+
+@Composable
+fun MarkdownText(modifier: Modifier = Modifier, markdown: String) {
+    val (html, setHtml) = remember { mutableStateOf("") }
+    LaunchedEffect(markdown) {
+        withContext(Dispatchers.IO) {
+            val parsedHtml = renderer.render(
+                markdownParser.parse(markdown)
+            )
+            setHtml(parsedHtml)
+        }
+    }
+    Column(
+        modifier = modifier
+            .fillMaxSize()
+            .verticalScroll(rememberScrollState()),
+        verticalArrangement = Arrangement.Top
+    ) {
+        HtmlText(html = html)
+    }
+}
+
+@SuppressLint("SetJavaScriptEnabled")
+@OptIn(ExperimentalStdlibApi::class)
+@Composable
+fun HtmlText(html: String, modifier: Modifier = Modifier) {
+    val materialColors = MaterialTheme.colorScheme
+    val style = remember(isSystemInDarkTheme()) {
+        """body {
+            |   background: #${materialColors.surface.toArgb().toHexString().substring(2)};
+            |   color: #${materialColors.onSurface.toArgb().toHexString().substring(2)};
+            |}
+            |a {
+            |   color: #${materialColors.secondary.toArgb().toHexString().substring(2)};
+            |}
+            |pre {
+            |   background: #${materialColors.surfaceVariant.toArgb().toHexString().substring(2)};
+            |   color: #${materialColors.onSurfaceVariant.toArgb().toHexString().substring(2)};
+            |}""".trimMargin().wrapTag("style")
+    }
+    AndroidView(
+        modifier = modifier,
+        factory = { context ->
+            FrameLayout(context).apply {
+                layoutParams = ViewGroup.LayoutParams(
+                    ViewGroup.LayoutParams.MATCH_PARENT,
+                    ViewGroup.LayoutParams.WRAP_CONTENT
+                )
+                addView(
+                    WebView(context).apply {
+                        tag = WEBVIEW_TAG
+                        WebView.setWebContentsDebuggingEnabled(BuildConfig.DEBUG)
+                        layoutParams = ViewGroup.LayoutParams(
+                            ViewGroup.LayoutParams.MATCH_PARENT,
+                            ViewGroup.LayoutParams.WRAP_CONTENT
+                        )
+                        setBackgroundColor(TRANSPARENT)
+                        isNestedScrollingEnabled = false
+                        settings.javaScriptEnabled = true
+                        loadDataWithBaseURL(null, style + html, "text/html", "UTF-8", null)
+                    }
+                )
+            }
+        },
+        update = { frameLayout ->
+            frameLayout.findViewWithTag<WebView>(WEBVIEW_TAG)
+                .loadDataWithBaseURL(null, style + html, "text/html", "UTF-8", null)
+        }
+    )
+}
+
+private const val WEBVIEW_TAG = "com.wbrawner.simplemarkdown.MarkdownText#WebView"
+
+private fun String.wrapTag(tag: String) = "<$tag>$this</$tag>"

app/src/main/java/com/wbrawner/simplemarkdown/ui/MarkdownTextField.kt

@@ -0,0 +1,82 @@
+package com.wbrawner.simplemarkdown.ui
+
+import androidx.compose.foundation.interaction.MutableInteractionSource
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.imePadding
+import androidx.compose.foundation.text.BasicTextField
+import androidx.compose.foundation.text.KeyboardActions
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.foundation.text.selection.LocalTextSelectionColors
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextFieldDefaults
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.SolidColor
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.input.KeyboardCapitalization
+import androidx.compose.ui.text.input.TextFieldValue
+import androidx.compose.ui.text.input.VisualTransformation
+import androidx.compose.ui.unit.dp
+import com.wbrawner.simplemarkdown.R
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun MarkdownTextField(
+    modifier: Modifier = Modifier,
+    markdown: TextFieldValue,
+    setMarkdown: (TextFieldValue) -> Unit,
+) {
+    val colors = TextFieldDefaults.colors(
+        focusedContainerColor = MaterialTheme.colorScheme.surface,
+        unfocusedContainerColor = MaterialTheme.colorScheme.surface,
+        disabledIndicatorColor = Color.Transparent,
+        errorIndicatorColor = Color.Transparent,
+        focusedIndicatorColor = Color.Transparent,
+        unfocusedIndicatorColor = Color.Transparent
+    )
+    val interactionSource = remember { MutableInteractionSource() }
+    val textStyle = TextStyle.Default.copy(
+        fontFamily = FontFamily.Monospace,
+        color = MaterialTheme.colorScheme.onSurface
+    )
+    CompositionLocalProvider(LocalTextSelectionColors provides colors.textSelectionColors) {
+        BasicTextField(
+            value = markdown,
+            modifier = modifier.imePadding(),
+            onValueChange = setMarkdown,
+            enabled = true,
+            readOnly = false,
+            textStyle = textStyle,
+            cursorBrush = SolidColor(colors.cursorColor),
+            keyboardOptions = KeyboardOptions(capitalization = KeyboardCapitalization.Sentences),
+            keyboardActions = KeyboardActions.Default,
+            interactionSource = interactionSource,
+            singleLine = false,
+            maxLines = Int.MAX_VALUE,
+            minLines = 1,
+            decorationBox = @Composable { innerTextField ->
+                // places leading icon, text field with label and placeholder, trailing icon
+                TextFieldDefaults.DecorationBox(
+                    value = markdown.text,
+                    visualTransformation = VisualTransformation.None,
+                    innerTextField = innerTextField,
+                    placeholder = {
+                        Text(stringResource(R.string.markdown_here))
+                    },
+                    singleLine = false,
+                    enabled = true,
+                    interactionSource = interactionSource,
+                    colors = colors,
+                    contentPadding = PaddingValues(8.dp)
+                )
+            },
+        )
+    }
+}

app/src/main/java/com/wbrawner/simplemarkdown/ui/MarkdownTopAppBar.kt

@@ -0,0 +1,66 @@
+package com.wbrawner.simplemarkdown.ui
+
+import androidx.compose.foundation.layout.RowScope
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.automirrored.filled.ArrowBack
+import androidx.compose.material.icons.filled.Menu
+import androidx.compose.material3.DrawerState
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults.topAppBarColors
+import androidx.compose.material3.TopAppBarScrollBehavior
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.text.style.TextOverflow
+import com.wbrawner.simplemarkdown.R
+import kotlinx.coroutines.launch
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun MarkdownTopAppBar(
+    title: String,
+    goBack: () -> Unit,
+    backAsUp: Boolean = true,
+    drawerState: DrawerState? = null,
+    actions: (@Composable RowScope.() -> Unit)? = null,
+    scrollBehavior: TopAppBarScrollBehavior? = null,
+) {
+    val coroutineScope = rememberCoroutineScope()
+    val context = LocalContext.current
+    TopAppBar(
+        title = {
+            Text(text = title, maxLines = 1, overflow = TextOverflow.Ellipsis)
+        },
+        colors = topAppBarColors(scrolledContainerColor = MaterialTheme.colorScheme.surface),
+        navigationIcon = {
+            val (icon, contentDescription, onClick) = remember {
+                if (backAsUp) {
+                    Triple(Icons.AutoMirrored.Filled.ArrowBack, context.getString(R.string.action_back), goBack)
+                } else {
+                    Triple(
+                        Icons.Default.Menu, context.getString(R.string.action_menu)
+                    ) {
+                        coroutineScope.launch {
+                            if (drawerState?.isOpen == true) {
+                                drawerState.close()
+                            } else {
+                                drawerState?.open()
+                            }
+                        }
+                    }
+                }
+            }
+            IconButton(onClick = { onClick() }) {
+                Icon(imageVector = icon, contentDescription = contentDescription)
+            }
+        },
+        actions = actions ?: {},
+        scrollBehavior = scrollBehavior
+    )
+}

app/src/main/java/com/wbrawner/simplemarkdown/ui/SettingsScreen.kt

@@ -0,0 +1,258 @@
+package com.wbrawner.simplemarkdown.ui
+
+import android.content.res.Configuration.UI_MODE_NIGHT_YES
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.AlertDialog
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.RadioButton
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Switch
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.stringArrayResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.navigation.NavController
+import com.wbrawner.simplemarkdown.BuildConfig
+import com.wbrawner.simplemarkdown.R
+import com.wbrawner.simplemarkdown.ui.theme.SimpleMarkdownTheme
+import com.wbrawner.simplemarkdown.utility.Preference
+import com.wbrawner.simplemarkdown.utility.PreferenceHelper
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun SettingsScreen(navController: NavController, preferenceHelper: PreferenceHelper) {
+    Scaffold(topBar = {
+        MarkdownTopAppBar(title = "Settings", goBack = { navController.popBackStack() })
+    }) { paddingValues ->
+        Column(
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(paddingValues)
+                .verticalScroll(rememberScrollState())
+        ) {
+            BooleanPreference(
+                title = stringResource(R.string.pref_title_autosave),
+                enabledDescription = stringResource(R.string.pref_autosave_on),
+                disabledDescription = stringResource(R.string.pref_autosave_off),
+                preference = Preference.AUTOSAVE_ENABLED,
+                preferenceHelper = preferenceHelper
+            )
+            ListPreference(
+                title = stringResource(R.string.title_dark_mode),
+                options = stringArrayResource(R.array.pref_values_dark_mode),
+                preference = Preference.DARK_MODE,
+                preferenceHelper = preferenceHelper
+            )
+            BooleanPreference(
+                title = stringResource(R.string.pref_title_error_reports),
+                enabledDescription = stringResource(R.string.pref_error_reports_on),
+                disabledDescription = stringResource(R.string.pref_error_reports_off),
+                preference = Preference.ERROR_REPORTS_ENABLED,
+                preferenceHelper = preferenceHelper
+            )
+            BooleanPreference(
+                title = stringResource(R.string.pref_title_analytics),
+                enabledDescription = stringResource(R.string.pref_analytics_on),
+                disabledDescription = stringResource(R.string.pref_analytics_off),
+                preference = Preference.ANALYTICS_ENABLED,
+                preferenceHelper = preferenceHelper
+            )
+            BooleanPreference(
+                title = stringResource(R.string.pref_title_readability),
+                enabledDescription = stringResource(R.string.pref_readability_on),
+                disabledDescription = stringResource(R.string.pref_readability_off),
+                preference = Preference.READABILITY_ENABLED,
+                preferenceHelper = preferenceHelper
+            )
+            if (BuildConfig.DEBUG) {
+                Row(modifier = Modifier
+                    .fillMaxWidth()
+                    .clickable {
+                        error("Forced crash")
+                    }
+                    .padding(16.dp),
+                    horizontalArrangement = Arrangement.SpaceBetween,
+                    verticalAlignment = Alignment.CenterVertically) {
+                    Column(verticalArrangement = Arrangement.Center) {
+                        Text(text = stringResource(R.string.action_force_crash), style = MaterialTheme.typography.bodyLarge)
+                        Text(
+                            text = stringResource(R.string.description_force_crash),
+                            style = MaterialTheme.typography.bodyMedium,
+                            color = MaterialTheme.colorScheme.onSurfaceVariant
+                        )
+                    }
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun BooleanPreference(
+    title: String,
+    enabledDescription: String,
+    disabledDescription: String,
+    preference: Preference,
+    preferenceHelper: PreferenceHelper
+) {
+    var enabled by remember {
+        mutableStateOf(preferenceHelper[preference] as Boolean)
+    }
+    BooleanPreference(title = title,
+        enabledDescription = enabledDescription,
+        disabledDescription = disabledDescription,
+        enabled = enabled,
+        setEnabled = {
+            enabled = it
+            preferenceHelper[preference] = it
+        })
+}
+
+@Composable
+fun BooleanPreference(
+    title: String,
+    enabledDescription: String,
+    disabledDescription: String,
+    enabled: Boolean,
+    setEnabled: (Boolean) -> Unit
+) {
+    Row(modifier = Modifier
+        .fillMaxWidth()
+        .clickable {
+            setEnabled(!enabled)
+        }
+        .padding(16.dp),
+        horizontalArrangement = Arrangement.SpaceBetween,
+        verticalAlignment = Alignment.CenterVertically) {
+        Column(verticalArrangement = Arrangement.Center) {
+            Text(text = title, style = MaterialTheme.typography.bodyLarge)
+            Text(
+                text = if (enabled) enabledDescription else disabledDescription,
+                style = MaterialTheme.typography.bodyMedium,
+                color = MaterialTheme.colorScheme.onSurfaceVariant
+            )
+        }
+        Switch(checked = enabled, onCheckedChange = setEnabled)
+    }
+}
+
+@Composable
+fun ListPreference(
+    title: String,
+    options: Array<String>,
+    preference: Preference,
+    preferenceHelper: PreferenceHelper
+) {
+    var selected by remember {
+        mutableStateOf(preferenceHelper[preference] as String)
+    }
+
+    ListPreference(title = title, options = options, selected = selected, setSelected = {
+        selected = it
+        preferenceHelper[preference] = it
+    })
+}
+
+@Composable
+fun ListPreference(
+    title: String, options: Array<String>, selected: String, setSelected: (String) -> Unit
+) {
+    var dialogShowing by remember { mutableStateOf(false) }
+    Column(modifier = Modifier
+        .fillMaxWidth()
+        .clickable {
+            dialogShowing = true
+        }
+        .padding(16.dp), verticalArrangement = Arrangement.Center) {
+        Text(text = title, style = MaterialTheme.typography.bodyLarge)
+        Text(
+            text = selected,
+            style = MaterialTheme.typography.bodyMedium,
+            color = MaterialTheme.colorScheme.onSurfaceVariant
+        )
+    }
+    if (dialogShowing) {
+        AlertDialog(
+            title = {
+                Text(title)
+            },
+            onDismissRequest = { dialogShowing = false },
+            confirmButton = {
+                TextButton(onClick = { dialogShowing = false }) {
+                    Text("Cancel")
+                }
+            },
+            text = {
+                Column {
+                    options.forEach { option ->
+                        val onClick = {
+                            setSelected(option)
+                            dialogShowing = false
+                        }
+                        Row(
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .clickable(onClick = onClick),
+                            horizontalArrangement = Arrangement.Start,
+                            verticalAlignment = Alignment.CenterVertically
+                        ) {
+                            RadioButton(selected = option == selected, onClick = onClick)
+                            Text(option)
+                        }
+                    }
+                }
+            }
+        )
+    }
+}
+
+@Preview
+@Preview(uiMode = UI_MODE_NIGHT_YES)
+@Composable
+fun BooleanPreference_Preview() {
+    val (enabled, setEnabled) = remember { mutableStateOf(true) }
+    SimpleMarkdownTheme {
+        Surface {
+            BooleanPreference(
+                "Autosave",
+                "Files will be saved automatically",
+                "Files will not be saved automatically",
+                enabled,
+                setEnabled
+            )
+        }
+    }
+}
+
+@Preview
+@Preview(uiMode = UI_MODE_NIGHT_YES)
+@Composable
+fun ListPreference_Preview() {
+    val (selected, setSelected) = remember { mutableStateOf("Auto") }
+    SimpleMarkdownTheme {
+        Surface {
+            ListPreference(
+                "Dark mode", arrayOf("Light", "Dark", "Auto"), selected, setSelected
+            )
+        }
+    }
+}

app/src/main/java/com/wbrawner/simplemarkdown/ui/SupportScreen.kt

@@ -0,0 +1,107 @@
+package com.wbrawner.simplemarkdown.ui
+
+import android.content.ActivityNotFoundException
+import android.content.Intent
+import android.net.Uri
+import androidx.browser.customtabs.CustomTabsIntent
+import androidx.browser.customtabs.CustomTabsIntent.SHARE_STATE_ON
+import androidx.compose.foundation.layout.Arrangement.Absolute.spacedBy
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Favorite
+import androidx.compose.material3.Button
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.Icon
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import androidx.core.content.ContextCompat.startActivity
+import androidx.navigation.NavController
+import com.wbrawner.simplemarkdown.R
+import com.wbrawner.simplemarkdown.utility.SupportLinks
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun SupportScreen(navController: NavController) {
+    Scaffold(topBar = {
+        MarkdownTopAppBar(title = stringResource(R.string.support_title), goBack = { navController.popBackStack() })
+    }) { paddingValues ->
+        val context = LocalContext.current
+        Column(
+            modifier = Modifier
+                .padding(paddingValues)
+                .padding(16.dp)
+                .verticalScroll(rememberScrollState()),
+            verticalArrangement = spacedBy(8.dp),
+            horizontalAlignment = Alignment.CenterHorizontally
+        ) {
+            Icon(
+                modifier = Modifier.size(100.dp),
+                imageVector = Icons.Default.Favorite,
+                contentDescription = null,
+                tint = MaterialTheme.colorScheme.primary
+            )
+            Text(stringResource(R.string.support_info), textAlign = TextAlign.Center)
+            Spacer(modifier = Modifier.height(8.dp))
+            Button(
+                modifier = Modifier.fillMaxWidth(),
+                onClick = {
+                    CustomTabsIntent.Builder()
+                        .setShareState(SHARE_STATE_ON)
+                        .build()
+                        .launchUrl(context, Uri.parse("https://github.com/wbrawner/SimpleMarkdown"))
+                },
+                colors = ButtonDefaults.buttonColors(
+                    containerColor = Color(context.getColor(R.color.colorBackgroundGitHub)),
+                    contentColor = Color.White
+                )
+            ) {
+                Text(stringResource(R.string.action_view_github))
+            }
+            Button(
+                modifier = Modifier.fillMaxWidth(),
+                onClick = {
+                    val playStoreIntent = Intent(Intent.ACTION_VIEW)
+                        .apply {
+                            data = Uri.parse("market://details?id=${context.packageName}")
+                            addFlags(
+                                Intent.FLAG_ACTIVITY_NO_HISTORY or
+                                        Intent.FLAG_ACTIVITY_NEW_DOCUMENT or
+                                        Intent.FLAG_ACTIVITY_MULTIPLE_TASK
+                            )
+                        }
+                    try {
+                        startActivity(context, playStoreIntent, null)
+                    } catch (ignored: ActivityNotFoundException) {
+                        playStoreIntent.data =
+                            Uri.parse("https://play.google.com/store/apps/details?id=${context.packageName}")
+                        startActivity(context, playStoreIntent, null)
+                    }
+                },
+                colors = ButtonDefaults.buttonColors(
+                    containerColor = Color(context.getColor(R.color.colorBackgroundPlayStore)),
+                    contentColor = Color.White
+                )
+            ) {
+                Text(stringResource(R.string.action_rate))
+            }
+            SupportLinks()
+        }
+    }
+}

app/src/main/java/com/wbrawner/simplemarkdown/ui/theme/Color.kt

@@ -0,0 +1,67 @@
+package com.wbrawner.simplemarkdown.ui.theme
+import androidx.compose.ui.graphics.Color
+
+val md_theme_light_primary = Color(0xFFBA1A20)
+val md_theme_light_onPrimary = Color(0xFFFFFFFF)
+val md_theme_light_primaryContainer = Color(0xFFFFDAD6)
+val md_theme_light_onPrimaryContainer = Color(0xFF410003)
+val md_theme_light_secondary = Color(0xFF775653)
+val md_theme_light_onSecondary = Color(0xFFFFFFFF)
+val md_theme_light_secondaryContainer = Color(0xFFFFDAD6)
+val md_theme_light_onSecondaryContainer = Color(0xFF2C1513)
+val md_theme_light_tertiary = Color(0xFF725B2E)
+val md_theme_light_onTertiary = Color(0xFFFFFFFF)
+val md_theme_light_tertiaryContainer = Color(0xFFFEDEA6)
+val md_theme_light_onTertiaryContainer = Color(0xFF261900)
+val md_theme_light_error = Color(0xFFBA1A1A)
+val md_theme_light_errorContainer = Color(0xFFFFDAD6)
+val md_theme_light_onError = Color(0xFFFFFFFF)
+val md_theme_light_onErrorContainer = Color(0xFF410002)
+val md_theme_light_background = Color(0xFFFFFBFF)
+val md_theme_light_onBackground = Color(0xFF201A19)
+val md_theme_light_surface = Color(0xFFFFFBFF)
+val md_theme_light_onSurface = Color(0xFF201A19)
+val md_theme_light_surfaceVariant = Color(0xFFF5DDDB)
+val md_theme_light_onSurfaceVariant = Color(0xFF534342)
+val md_theme_light_outline = Color(0xFF857371)
+val md_theme_light_inverseOnSurface = Color(0xFFFBEEEC)
+val md_theme_light_inverseSurface = Color(0xFF362F2E)
+val md_theme_light_inversePrimary = Color(0xFFFFB3AC)
+val md_theme_light_shadow = Color(0xFF000000)
+val md_theme_light_surfaceTint = Color(0xFFBA1A20)
+val md_theme_light_outlineVariant = Color(0xFFD8C2BF)
+val md_theme_light_scrim = Color(0xFF000000)
+
+val md_theme_dark_primary = Color(0xFFFFB3AC)
+val md_theme_dark_onPrimary = Color(0xFF680008)
+val md_theme_dark_primaryContainer = Color(0xFF930010)
+val md_theme_dark_onPrimaryContainer = Color(0xFFFFDAD6)
+val md_theme_dark_secondary = Color(0xFFE7BDB8)
+val md_theme_dark_onSecondary = Color(0xFF442927)
+val md_theme_dark_secondaryContainer = Color(0xFF5D3F3C)
+val md_theme_dark_onSecondaryContainer = Color(0xFFFFDAD6)
+val md_theme_dark_tertiary = Color(0xFFE1C38C)
+val md_theme_dark_onTertiary = Color(0xFF3F2D04)
+val md_theme_dark_tertiaryContainer = Color(0xFF584419)
+val md_theme_dark_onTertiaryContainer = Color(0xFFFEDEA6)
+val md_theme_dark_error = Color(0xFFFFB4AB)
+val md_theme_dark_errorContainer = Color(0xFF93000A)
+val md_theme_dark_onError = Color(0xFF690005)
+val md_theme_dark_onErrorContainer = Color(0xFFFFDAD6)
+val md_theme_dark_background = Color(0xFF201A19)
+val md_theme_dark_onBackground = Color(0xFFEDE0DE)
+val md_theme_dark_surface = Color(0xFF201A19)
+val md_theme_dark_onSurface = Color(0xFFEDE0DE)
+val md_theme_dark_surfaceVariant = Color(0xFF534342)
+val md_theme_dark_onSurfaceVariant = Color(0xFFD8C2BF)
+val md_theme_dark_outline = Color(0xFFA08C8A)
+val md_theme_dark_inverseOnSurface = Color(0xFF201A19)
+val md_theme_dark_inverseSurface = Color(0xFFEDE0DE)
+val md_theme_dark_inversePrimary = Color(0xFFBA1A20)
+val md_theme_dark_shadow = Color(0xFF000000)
+val md_theme_dark_surfaceTint = Color(0xFFFFB3AC)
+val md_theme_dark_outlineVariant = Color(0xFF534342)
+val md_theme_dark_scrim = Color(0xFF000000)
+
+
+val seed = Color(0xFFD32F2F)

app/src/main/java/com/wbrawner/simplemarkdown/ui/theme/Theme.kt

@@ -0,0 +1,90 @@
+package com.wbrawner.simplemarkdown.ui.theme
+
+import androidx.compose.foundation.isSystemInDarkTheme
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.lightColorScheme
+import androidx.compose.material3.darkColorScheme
+import androidx.compose.runtime.Composable
+
+
+private val LightColors = lightColorScheme(
+    primary = md_theme_light_primary,
+    onPrimary = md_theme_light_onPrimary,
+    primaryContainer = md_theme_light_primaryContainer,
+    onPrimaryContainer = md_theme_light_onPrimaryContainer,
+    secondary = md_theme_light_secondary,
+    onSecondary = md_theme_light_onSecondary,
+    secondaryContainer = md_theme_light_secondaryContainer,
+    onSecondaryContainer = md_theme_light_onSecondaryContainer,
+    tertiary = md_theme_light_tertiary,
+    onTertiary = md_theme_light_onTertiary,
+    tertiaryContainer = md_theme_light_tertiaryContainer,
+    onTertiaryContainer = md_theme_light_onTertiaryContainer,
+    error = md_theme_light_error,
+    errorContainer = md_theme_light_errorContainer,
+    onError = md_theme_light_onError,
+    onErrorContainer = md_theme_light_onErrorContainer,
+    background = md_theme_light_background,
+    onBackground = md_theme_light_onBackground,
+    surface = md_theme_light_surface,
+    onSurface = md_theme_light_onSurface,
+    surfaceVariant = md_theme_light_surfaceVariant,
+    onSurfaceVariant = md_theme_light_onSurfaceVariant,
+    outline = md_theme_light_outline,
+    inverseOnSurface = md_theme_light_inverseOnSurface,
+    inverseSurface = md_theme_light_inverseSurface,
+    inversePrimary = md_theme_light_inversePrimary,
+    surfaceTint = md_theme_light_surfaceTint,
+    outlineVariant = md_theme_light_outlineVariant,
+    scrim = md_theme_light_scrim,
+)
+
+
+private val DarkColors = darkColorScheme(
+    primary = md_theme_dark_primary,
+    onPrimary = md_theme_dark_onPrimary,
+    primaryContainer = md_theme_dark_primaryContainer,
+    onPrimaryContainer = md_theme_dark_onPrimaryContainer,
+    secondary = md_theme_dark_secondary,
+    onSecondary = md_theme_dark_onSecondary,
+    secondaryContainer = md_theme_dark_secondaryContainer,
+    onSecondaryContainer = md_theme_dark_onSecondaryContainer,
+    tertiary = md_theme_dark_tertiary,
+    onTertiary = md_theme_dark_onTertiary,
+    tertiaryContainer = md_theme_dark_tertiaryContainer,
+    onTertiaryContainer = md_theme_dark_onTertiaryContainer,
+    error = md_theme_dark_error,
+    errorContainer = md_theme_dark_errorContainer,
+    onError = md_theme_dark_onError,
+    onErrorContainer = md_theme_dark_onErrorContainer,
+    background = md_theme_dark_background,
+    onBackground = md_theme_dark_onBackground,
+    surface = md_theme_dark_surface,
+    onSurface = md_theme_dark_onSurface,
+    surfaceVariant = md_theme_dark_surfaceVariant,
+    onSurfaceVariant = md_theme_dark_onSurfaceVariant,
+    outline = md_theme_dark_outline,
+    inverseOnSurface = md_theme_dark_inverseOnSurface,
+    inverseSurface = md_theme_dark_inverseSurface,
+    inversePrimary = md_theme_dark_inversePrimary,
+    surfaceTint = md_theme_dark_surfaceTint,
+    outlineVariant = md_theme_dark_outlineVariant,
+    scrim = md_theme_dark_scrim,
+)
+
+@Composable
+fun SimpleMarkdownTheme(
+  useDarkTheme: Boolean = isSystemInDarkTheme(),
+  content: @Composable () -> Unit
+) {
+  val colors = if (!useDarkTheme) {
+    LightColors
+  } else {
+    DarkColors
+  }
+
+  MaterialTheme(
+    colorScheme = colors,
+    content = content
+  )
+}

app/src/main/java/com/wbrawner/simplemarkdown/utility/ErrorHandler.kt

@@ -1,43 +0,0 @@
-package com.wbrawner.simplemarkdown.utility
-
-import android.content.Context
-import android.util.Log
-import com.wbrawner.simplemarkdown.BuildConfig
-import io.sentry.android.core.SentryAndroid
-import io.sentry.core.Sentry
-import java.util.concurrent.atomic.AtomicBoolean
-
-interface ErrorHandler {
-    fun init(context: Context, enable: Boolean)
-    fun enable(enable: Boolean)
-    fun reportException(t: Throwable, message: String? = null)
-}
-
-class SentryErrorHandler : ErrorHandler {
-    private lateinit var enabled: AtomicBoolean
-
-    override fun init(context: Context, enable: Boolean) {
-        enabled = AtomicBoolean(enable)
-        SentryAndroid.init(context) { options ->
-            options.setBeforeSend { event, _ ->
-                if (enabled.get()) {
-                    event
-                } else {
-                    null
-                }
-            }
-        }
-    }
-
-    override fun enable(enable: Boolean) {
-        enabled.set(enable)
-    }
-
-    override fun reportException(t: Throwable, message: String?) {
-        @Suppress("ConstantConditionIf")
-        if (BuildConfig.DEBUG) {
-            Log.e("SentryErrorHandler", "Caught exception: $message", t)
-        }
-        Sentry.captureException(t)
-    }
-}

app/src/main/java/com/wbrawner/simplemarkdown/utility/Extensions.kt

@@ -1,53 +1,32 @@
 package com.wbrawner.simplemarkdown.utility
 
+import android.app.Activity
 import android.content.Context
+import android.content.ContextWrapper
 import android.content.res.AssetManager
 import android.net.Uri
 import android.provider.OpenableColumns
-import android.view.View
-import android.view.inputmethod.InputMethodManager
-import com.commonsware.cwac.anddown.AndDown
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import java.io.Reader
 
-fun View.showKeyboard() {
-    (context.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager)
-            .toggleSoftInput(InputMethodManager.SHOW_FORCED, 0)
-    requestFocus()
-}
-
-fun View.hideKeyboard() =
-        (context.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager)
-                .hideSoftInputFromWindow(windowToken, 0)
-
-suspend fun AssetManager.readAssetToString(asset: String): String? {
+suspend fun AssetManager.readAssetToString(asset: String): String {
     return withContext(Dispatchers.IO) {
         open(asset).reader().use(Reader::readText)
     }
 }
 
-const val HOEDOWN_FLAGS = AndDown.HOEDOWN_EXT_STRIKETHROUGH or AndDown.HOEDOWN_EXT_TABLES or
-        AndDown.HOEDOWN_EXT_UNDERLINE or AndDown.HOEDOWN_EXT_SUPERSCRIPT or
-        AndDown.HOEDOWN_EXT_FENCED_CODE
-
-suspend fun String.toHtml(): String {
-    return withContext(Dispatchers.IO) {
-        AndDown().markdownToHtml(this@toHtml, HOEDOWN_FLAGS, 0)
-    }
-}
-
 suspend fun Uri.getName(context: Context): String {
     var fileName: String? = null
     try {
         if ("content" == scheme) {
             withContext(Dispatchers.IO) {
                 context.contentResolver.query(
-                        this@getName,
-                        null,
-                        null,
-                        null,
-                        null
+                    this@getName,
+                    null,
+                    null,
+                    null,
+                    null
                 )?.use {
                     val nameIndex = it.getColumnIndex(OpenableColumns.DISPLAY_NAME)
                     it.moveToFirst()
@@ -62,3 +41,11 @@ suspend fun Uri.getName(context: Context): String {
     }
     return fileName ?: "Untitled.md"
 }
+
+@Suppress("RecursivePropertyAccessor")
+val Context.activity: Activity?
+    get() = when (this) {
+        is Activity -> this
+        is ContextWrapper -> baseContext.activity
+        else -> null
+    }

app/src/main/java/com/wbrawner/simplemarkdown/utility/FileHelper.kt

@@ -0,0 +1,73 @@
+package com.wbrawner.simplemarkdown.utility
+
+import android.content.Context
+import android.content.Intent
+import android.os.Environment
+import androidx.core.net.toUri
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import timber.log.Timber
+import java.io.File
+import java.io.FileInputStream
+import java.io.IOException
+import java.io.Reader
+import java.net.URI
+
+interface FileHelper {
+    val defaultDirectory: File
+
+    /**
+     * Opens a file at the given path
+     * @param path The path of the file to open
+     * @return A [Pair] of the file name to the file's contents
+     */
+    suspend fun open(source: URI): Pair<String, String>?
+
+    /**
+     * Saves the given content to the given path
+     * @param path
+     * @param content
+     * @return The name of the saved file
+     */
+    suspend fun save(destination: URI, content: String): String
+}
+
+class AndroidFileHelper(private val context: Context) : FileHelper {
+    override val defaultDirectory: File by lazy {
+        context.getExternalFilesDir(Environment.DIRECTORY_DOCUMENTS)
+            ?: context.filesDir
+    }
+
+    override suspend fun open(source: URI): Pair<String, String>? = withContext(Dispatchers.IO) {
+        val uri = source.toString().toUri()
+        try {
+            context.contentResolver.takePersistableUriPermission(
+                uri,
+                Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION
+            )
+        } catch (e: SecurityException) {
+            // We weren't granted the persistent read/write permission for this file.
+            // TODO: Return whether or not we got the persistent permission in order to determine
+            //      whether or not we should show this file in the recent files section
+        }
+        context.contentResolver.openFileDescriptor(uri, "r")
+            ?.use {
+                uri.getName(context) to FileInputStream(it.fileDescriptor).reader()
+                    .use(Reader::readText)
+            }
+    }
+
+    override suspend fun save(destination: URI, content: String): String = withContext(Dispatchers.IO) {
+        val uri = destination.toString().toUri()
+        context.contentResolver.openOutputStream(uri, "rwt")
+            ?.writer()
+            ?.use {
+                it.write(content)
+            }
+            ?: run {
+                Timber.w("Open output stream returned null for uri: $uri")
+                throw IOException("Failed to save to $destination")
+            }
+        return@withContext uri.getName(context)
+    }
+}

app/src/main/java/com/wbrawner/simplemarkdown/utility/PersistentTree.kt

@@ -0,0 +1,80 @@
+package com.wbrawner.simplemarkdown.utility
+
+import android.util.Log
+import com.wbrawner.simplemarkdown.utility.PersistentTree.Companion.create
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import timber.log.Timber
+import java.io.File
+import java.io.FileOutputStream
+import java.io.IOException
+import java.io.PrintStream
+import java.text.SimpleDateFormat
+import java.util.*
+
+/**
+ * A [Timber.Tree] implementation that persists all logs to disk for retrieval later. Create
+ * instances via [create] instead of calling the constructor directly.
+ */
+class PersistentTree private constructor(
+    private val coroutineScope: CoroutineScope,
+    private val logFile: File
+) : Timber.Tree() {
+    private val dateFormat = object : ThreadLocal<SimpleDateFormat>() {
+        override fun initialValue(): SimpleDateFormat =
+                SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.US)
+    }
+
+    override fun log(priority: Int, tag: String?, message: String, t: Throwable?) {
+        val timestamp = dateFormat.get()!!.format(System.currentTimeMillis())
+        coroutineScope.launch(Dispatchers.IO) {
+            val priorityLetter = when (priority) {
+                Log.ASSERT -> "A"
+                Log.DEBUG -> "D"
+                Log.ERROR -> "E"
+                Log.INFO -> "I"
+                Log.VERBOSE -> "V"
+                Log.WARN -> "W"
+                else -> "U"
+            }
+            FileOutputStream(logFile, true).use { stream ->
+                stream.bufferedWriter().use {
+                    it.appendLine("$timestamp $priorityLetter/${tag ?: "SimpleMarkdown"}: $message")
+                }
+                t?.let {
+                    PrintStream(stream).use { pStream ->
+                        it.printStackTrace(pStream)
+                    }
+                }
+            }
+        }
+    }
+
+    init {
+        log(Log.INFO, "Persistent logging initialized, writing contents to ${logFile.absolutePath}")
+    }
+
+    companion object {
+        /**
+         * Create a new instance of a [PersistentTree].
+         * @param logDir A [File] pointing to a directory where the log files should be stored. Will be
+         * created if it doesn't exist.
+         * @throws IllegalArgumentException if [logDir] is a file instead of a directory
+         * @throws IOException if the directory does not exist or cannot be
+         * created/written to
+         */
+        @Throws(IllegalArgumentException::class, IOException::class)
+        suspend fun create(coroutineScope: CoroutineScope, logDir: File): PersistentTree = withContext(Dispatchers.IO) {
+            if (!logDir.mkdirs() && !logDir.isDirectory)
+                throw IllegalArgumentException("Unable to create log directory at ${logDir.absolutePath}")
+            val timestamp = SimpleDateFormat("yyyyMMddHHmmss", Locale.US).format(Date())
+            val logFile = File(logDir, "persistent-log-$timestamp.log")
+            if (!logFile.createNewFile())
+                throw IOException("Unable to create logFile at ${logFile.absolutePath}")
+            PersistentTree(coroutineScope, logFile)
+        }
+    }
+}

app/src/main/java/com/wbrawner/simplemarkdown/utility/PreferenceHelper.kt

@@ -0,0 +1,63 @@
+package com.wbrawner.simplemarkdown.utility
+
+import android.content.Context
+import androidx.core.content.edit
+import androidx.preference.PreferenceManager
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.launch
+
+interface PreferenceHelper {
+    operator fun get(preference: Preference): Any?
+
+    operator fun set(preference: Preference, value: Any?)
+
+    fun <T> observe(preference: Preference): StateFlow<T>
+}
+
+class AndroidPreferenceHelper(context: Context, private val coroutineScope: CoroutineScope = CoroutineScope(Dispatchers.IO)): PreferenceHelper {
+    private val sharedPreferences by lazy {
+        PreferenceManager.getDefaultSharedPreferences(context)
+    }
+    private val states by lazy {
+        val allPrefs: Map<String, Any?> = sharedPreferences.all
+        Preference.entries.associateWith { preference ->
+            MutableStateFlow(allPrefs[preference.key] ?: preference.default)
+        }
+    }
+
+    override fun get(preference: Preference): Any? = states[preference]?.value
+
+    override fun set(preference: Preference, value: Any?) {
+        sharedPreferences.edit {
+            when (value) {
+                is Boolean -> putBoolean(preference.key, value)
+                is Float -> putFloat(preference.key, value)
+                is Int -> putInt(preference.key, value)
+                is Long -> putLong(preference.key, value)
+                is String -> putString(preference.key, value)
+                null -> remove(preference.key)
+            }
+        }
+        coroutineScope.launch {
+            states[preference]!!.emit(value)
+        }
+    }
+
+    @Suppress("UNCHECKED_CAST")
+    override fun <T> observe(preference: Preference): StateFlow<T> = states[preference]!!.asStateFlow() as StateFlow<T>
+}
+
+enum class Preference(val key: String, val default: Any?) {
+    ANALYTICS_ENABLED("analytics.enable", true),
+    AUTOSAVE_ENABLED("autosave", true),
+    AUTOSAVE_URI("autosave.uri", null),
+    CUSTOM_CSS("pref.custom_css", null),
+    DARK_MODE("darkMode", "Auto"),
+    ERROR_REPORTS_ENABLED("acra.enable", true),
+    LOCK_SWIPING("lockSwiping", false),
+    READABILITY_ENABLED("readability.enable", false)
+}

app/src/main/java/com/wbrawner/simplemarkdown/view/DisableableViewPager.kt

@@ -1,28 +0,0 @@
-package com.wbrawner.simplemarkdown.view
-
-import android.annotation.SuppressLint
-import android.content.Context
-import android.util.AttributeSet
-import android.view.MotionEvent
-import androidx.viewpager.widget.ViewPager
-
-class DisableableViewPager : ViewPager {
-    private var isSwipeLocked = false
-
-    constructor(context: Context) : super(context)
-
-    constructor(context: Context, attrs: AttributeSet?) : super(context, attrs)
-
-    override fun onInterceptTouchEvent(ev: MotionEvent): Boolean {
-        return !isSwipeLocked && super.onInterceptTouchEvent(ev)
-    }
-
-    @SuppressLint("ClickableViewAccessibility")
-    override fun onTouchEvent(ev: MotionEvent): Boolean {
-        return !isSwipeLocked && super.onTouchEvent(ev)
-    }
-
-    fun setSwipeLocked(locked: Boolean) {
-        this.isSwipeLocked = locked
-    }
-}

app/src/main/java/com/wbrawner/simplemarkdown/view/ViewPagerPage.kt

@@ -1,6 +0,0 @@
-package com.wbrawner.simplemarkdown.view
-
-interface ViewPagerPage {
-    fun onSelected()
-    fun onDeselected()
-}

app/src/main/java/com/wbrawner/simplemarkdown/view/activity/MainActivity.kt

@@ -1,39 +0,0 @@
-package com.wbrawner.simplemarkdown.view.activity
-
-import android.os.Bundle
-import androidx.activity.viewModels
-import androidx.appcompat.app.AppCompatActivity
-import androidx.core.app.ActivityCompat
-import androidx.navigation.findNavController
-import com.wbrawner.simplemarkdown.R
-import com.wbrawner.simplemarkdown.viewmodel.MarkdownViewModel
-import kotlinx.coroutines.*
-import kotlin.coroutines.CoroutineContext
-
-class MainActivity : AppCompatActivity(), ActivityCompat.OnRequestPermissionsResultCallback, CoroutineScope {
-
-    override val coroutineContext: CoroutineContext = Dispatchers.Main
-    private val viewModel: MarkdownViewModel by viewModels()
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_main)
-        intent?.data?.let {
-            launch {
-                viewModel.load(this@MainActivity, it)
-                intent?.data = null
-            }
-        }
-    }
-
-    override fun onBackPressed() {
-        findNavController(R.id.content).navigateUp()
-    }
-
-    override fun onDestroy() {
-        super.onDestroy()
-        coroutineContext[Job]?.let {
-            cancel()
-        }
-    }
-}

app/src/main/java/com/wbrawner/simplemarkdown/view/activity/SplashActivity.kt

@@ -1,69 +0,0 @@
-package com.wbrawner.simplemarkdown.view.activity
-
-import android.content.Intent
-import android.net.Uri
-import android.os.Build
-import android.os.Bundle
-import androidx.appcompat.app.AppCompatActivity
-import androidx.appcompat.app.AppCompatDelegate
-import androidx.preference.PreferenceManager
-import com.wbrawner.simplemarkdown.R
-import kotlinx.coroutines.*
-import kotlin.coroutines.CoroutineContext
-
-class SplashActivity : AppCompatActivity(), CoroutineScope {
-
-    override val coroutineContext: CoroutineContext = Dispatchers.Main
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        launch {
-            val darkMode = withContext(Dispatchers.IO) {
-                val darkModeValue = PreferenceManager.getDefaultSharedPreferences(this@SplashActivity)
-                        .getString(
-                                getString(R.string.pref_key_dark_mode),
-                                getString(R.string.pref_value_auto)
-                        )
-
-                return@withContext when {
-                    darkModeValue.equals(getString(R.string.pref_value_light), ignoreCase = true) -> AppCompatDelegate.MODE_NIGHT_NO
-                    darkModeValue.equals(getString(R.string.pref_value_dark), ignoreCase = true) -> AppCompatDelegate.MODE_NIGHT_YES
-                    else -> {
-                        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.P) {
-                            AppCompatDelegate.MODE_NIGHT_AUTO_BATTERY
-                        } else {
-                            AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM
-                        }
-                    }
-                }
-
-            }
-
-            AppCompatDelegate.setDefaultNightMode(darkMode)
-            val uri = withContext(Dispatchers.IO) {
-                intent?.data
-                        ?: PreferenceManager.getDefaultSharedPreferences(this@SplashActivity)
-                                .getString(
-                                        getString(R.string.pref_key_autosave_uri),
-                                        null
-                                )?.let {
-                                    Uri.parse(it)
-                                }
-            }
-
-            val startIntent = Intent(this@SplashActivity, MainActivity::class.java)
-                    .apply {
-                        data = uri
-                    }
-            startActivity(startIntent)
-            finish()
-        }
-    }
-
-    override fun onDestroy() {
-        super.onDestroy()
-        coroutineContext[Job]?.let {
-            cancel()
-        }
-    }
-}

app/src/main/java/com/wbrawner/simplemarkdown/view/adapter/EditPagerAdapter.kt

@@ -1,70 +0,0 @@
-package com.wbrawner.simplemarkdown.view.adapter
-
-import android.content.Context
-import android.content.res.Configuration
-import androidx.fragment.app.Fragment
-import androidx.fragment.app.FragmentManager
-import androidx.fragment.app.FragmentPagerAdapter
-import androidx.viewpager.widget.ViewPager
-import com.wbrawner.simplemarkdown.R
-import com.wbrawner.simplemarkdown.view.fragment.EditFragment
-import com.wbrawner.simplemarkdown.view.fragment.PreviewFragment
-
-class EditPagerAdapter(fm: FragmentManager, private val context: Context)
-    : FragmentPagerAdapter(fm, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT), ViewPager.OnPageChangeListener {
-
-    private val editFragment = EditFragment()
-    private val previewFragment = PreviewFragment()
-
-    override fun getItem(position: Int): Fragment {
-        return when (position) {
-            FRAGMENT_EDIT -> editFragment
-            FRAGMENT_PREVIEW -> previewFragment
-            else -> throw IllegalStateException("Attempting to get fragment for invalid page number")
-        }
-    }
-
-    override fun getCount(): Int {
-        return NUM_PAGES
-    }
-
-    override fun getPageTitle(position: Int): CharSequence? {
-        var stringId = 0
-        when (position) {
-            FRAGMENT_EDIT -> stringId = R.string.action_edit
-            FRAGMENT_PREVIEW -> stringId = R.string.action_preview
-        }
-        return context.getString(stringId)
-    }
-
-    override fun getPageWidth(position: Int): Float {
-        return if (context.resources.configuration.orientation == Configuration.ORIENTATION_LANDSCAPE) {
-            0.5f
-        } else {
-            super.getPageWidth(position)
-        }
-    }
-
-    override fun onPageScrollStateChanged(state: Int) {
-    }
-
-    override fun onPageScrolled(position: Int, positionOffset: Float, positionOffsetPixels: Int) {
-    }
-
-    override fun onPageSelected(position: Int) {
-        when (position) {
-            FRAGMENT_EDIT -> {
-                editFragment.onSelected()
-            }
-            FRAGMENT_PREVIEW -> {
-                editFragment.onDeselected()
-            }
-        }
-    }
-
-    companion object {
-        const val FRAGMENT_EDIT = 0
-        const val FRAGMENT_PREVIEW = 1
-        const val NUM_PAGES = 2
-    }
-}

app/src/main/java/com/wbrawner/simplemarkdown/view/fragment/EditFragment.kt

@@ -1,177 +0,0 @@
-package com.wbrawner.simplemarkdown.view.fragment
-
-import android.annotation.SuppressLint
-import android.graphics.Color
-import android.os.Bundle
-import android.text.Editable
-import android.text.SpannableString
-import android.text.TextWatcher
-import android.text.style.BackgroundColorSpan
-import android.util.Log
-import android.view.LayoutInflater
-import android.view.MotionEvent
-import android.view.View
-import android.view.ViewGroup
-import android.widget.EditText
-import android.widget.TextView
-import androidx.core.widget.NestedScrollView
-import androidx.fragment.app.Fragment
-import androidx.fragment.app.activityViewModels
-import androidx.lifecycle.Observer
-import androidx.preference.PreferenceManager
-import com.wbrawner.simplemarkdown.R
-import com.wbrawner.simplemarkdown.model.Readability
-import com.wbrawner.simplemarkdown.utility.hideKeyboard
-import com.wbrawner.simplemarkdown.utility.showKeyboard
-import com.wbrawner.simplemarkdown.view.ViewPagerPage
-import com.wbrawner.simplemarkdown.viewmodel.MarkdownViewModel
-import kotlinx.coroutines.*
-import kotlin.coroutines.CoroutineContext
-import kotlin.math.abs
-
-class EditFragment : Fragment(), ViewPagerPage, CoroutineScope {
-    private var markdownEditor: EditText? = null
-    private var markdownEditorScroller: NestedScrollView? = null
-    private val viewModel: MarkdownViewModel by activityViewModels()
-    override val coroutineContext: CoroutineContext = Dispatchers.Main
-    private var readabilityWatcher: TextWatcher? = null
-
-    @SuppressLint("ClickableViewAccessibility")
-    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,
-                              savedInstanceState: Bundle?): View? =
-            inflater.inflate(R.layout.fragment_edit, container, false)
-
-    @SuppressLint("ClickableViewAccessibility")
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        super.onViewCreated(view, savedInstanceState)
-        markdownEditor = view.findViewById(R.id.markdown_edit)
-        markdownEditorScroller = view.findViewById(R.id.markdown_edit_container)
-        markdownEditor?.addTextChangedListener(object : TextWatcher {
-            private var searchFor = ""
-
-            override fun afterTextChanged(s: Editable?) {
-                val searchText = s.toString().trim()
-                if (searchText == searchFor)
-                    return
-
-                searchFor = searchText
-
-                launch {
-                    delay(50)
-                    if (searchText != searchFor)
-                        return@launch
-                    viewModel.updateMarkdown(searchText)
-                }
-            }
-
-            override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {
-            }
-
-            override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
-            }
-
-        })
-
-        var touchDown = 0L
-        var oldX = 0f
-        var oldY = 0f
-        markdownEditorScroller!!.setOnTouchListener { _, event ->
-            // The ScrollView's onClickListener doesn't seem to be called, so I've had to
-            // implement a sort of custom click listener that checks that the tap was both quick
-            // and didn't drag.
-            when (event?.action) {
-                MotionEvent.ACTION_DOWN -> {
-                    touchDown = System.currentTimeMillis()
-                    oldX = event.rawX
-                    oldY = event.rawY
-                }
-                MotionEvent.ACTION_UP -> {
-                    if (System.currentTimeMillis() - touchDown < 150
-                            && abs(event.rawX - oldX) < 25
-                            && abs(event.rawY - oldY) < 25)
-                        markdownEditor?.showKeyboard()
-                }
-            }
-            false
-        }
-        markdownEditor?.setText(viewModel.markdownUpdates.value)
-        viewModel.originalMarkdown.observe(viewLifecycleOwner, Observer {
-            markdownEditor?.setText(it)
-        })
-        launch {
-            val enableReadability = withContext(Dispatchers.IO) {
-                context?.let {
-                    PreferenceManager.getDefaultSharedPreferences(it)
-                            .getBoolean(getString(R.string.readability_enabled), false)
-                }?: false
-            }
-            if (enableReadability) {
-                if (readabilityWatcher == null) {
-                    readabilityWatcher = ReadabilityTextWatcher()
-                }
-                markdownEditor?.addTextChangedListener(readabilityWatcher)
-            } else {
-                readabilityWatcher?.let {
-                    markdownEditor?.removeTextChangedListener(it)
-                }
-                readabilityWatcher = null
-            }
-        }
-    }
-
-    override fun onDestroyView() {
-        coroutineContext[Job]?.let {
-            cancel()
-        }
-        super.onDestroyView()
-    }
-
-    override fun onSelected() {
-        markdownEditor?.showKeyboard()
-    }
-
-    override fun onDeselected() {
-        markdownEditor?.hideKeyboard()
-    }
-
-    inner class ReadabilityTextWatcher : TextWatcher {
-        private var previousValue = ""
-        private var searchFor = ""
-
-        override fun afterTextChanged(s: Editable?) {
-            val searchText = s.toString().trim()
-            if (searchText == searchFor)
-                return
-
-            searchFor = searchText
-
-            launch {
-                delay(250)
-                if (searchText != searchFor)
-                    return@launch
-                val start = System.currentTimeMillis()
-                if (searchFor.isEmpty()) return@launch
-                if (previousValue == searchFor) return@launch
-                val readability = Readability(searchFor)
-                val span = SpannableString(searchFor)
-                for (sentence in readability.sentences()) {
-                    var color = Color.TRANSPARENT
-                    if (sentence.syllableCount() > 25) color = Color.argb(100, 229, 232, 42)
-                    if (sentence.syllableCount() > 35) color = Color.argb(100, 193, 66, 66)
-                    Log.d("SimpleMarkdown", "Sentence start: ${sentence.start()} end: ${sentence.end()}")
-                    span.setSpan(BackgroundColorSpan(color), sentence.start(), sentence.end(), 0)
-                }
-                markdownEditor?.setTextKeepState(span, TextView.BufferType.SPANNABLE)
-                previousValue = searchFor
-                val timeTakenMs = System.currentTimeMillis() - start
-                Log.d("SimpleMarkdown", "Handled markdown in $timeTakenMs ms")
-            }
-        }
-
-        override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {
-        }
-
-        override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
-        }
-    }
-}

app/src/main/java/com/wbrawner/simplemarkdown/view/fragment/MainFragment.kt

@@ -1,301 +0,0 @@
-package com.wbrawner.simplemarkdown.view.fragment
-
-import android.Manifest
-import android.app.Activity
-import android.content.Intent
-import android.content.pm.PackageManager
-import android.content.res.Configuration
-import android.net.Uri
-import android.os.Build
-import android.os.Bundle
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import android.webkit.MimeTypeMap
-import android.widget.Toast
-import androidx.appcompat.app.AlertDialog
-import androidx.core.app.ActivityCompat
-import androidx.core.content.ContextCompat
-import androidx.fragment.app.Fragment
-import androidx.fragment.app.activityViewModels
-import androidx.lifecycle.Observer
-import androidx.navigation.fragment.findNavController
-import androidx.navigation.ui.AppBarConfiguration
-import androidx.navigation.ui.onNavDestinationSelected
-import androidx.navigation.ui.setupWithNavController
-import androidx.preference.PreferenceManager
-import com.wbrawner.simplemarkdown.MarkdownApplication
-import com.wbrawner.simplemarkdown.R
-import com.wbrawner.simplemarkdown.view.adapter.EditPagerAdapter
-import com.wbrawner.simplemarkdown.viewmodel.MarkdownViewModel
-import kotlinx.android.synthetic.main.fragment_main.*
-import kotlinx.coroutines.*
-import java.io.File
-import kotlin.coroutines.CoroutineContext
-
-class MainFragment : Fragment(), ActivityCompat.OnRequestPermissionsResultCallback, CoroutineScope {
-
-    private var shouldAutoSave = true
-    override val coroutineContext: CoroutineContext = Dispatchers.Main
-    private val viewModel: MarkdownViewModel by activityViewModels()
-    private var appBarConfiguration: AppBarConfiguration? = null
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        setHasOptionsMenu(true)
-    }
-
-    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? =
-            inflater.inflate(R.layout.fragment_main, container, false)
-
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        with(findNavController()) {
-            appBarConfiguration = AppBarConfiguration(graph, drawerLayout)
-            toolbar.setupWithNavController(this, appBarConfiguration!!)
-            toolbar.inflateMenu(R.menu.menu_edit)
-            toolbar.setOnMenuItemClickListener { item ->
-                return@setOnMenuItemClickListener when (item.itemId) {
-                    R.id.action_save -> {
-                        launch {
-                            if (!viewModel.save(requireContext())) {
-                                requestFileOp(REQUEST_SAVE_FILE)
-                            } else {
-                                Toast.makeText(
-                                        requireContext(),
-                                        getString(R.string.file_saved, viewModel.fileName.value),
-                                        Toast.LENGTH_SHORT
-                                ).show()
-                            }
-                        }
-                        true
-                    }
-                    R.id.action_save_as -> {
-                        requestFileOp(REQUEST_SAVE_FILE)
-                        true
-                    }
-                    R.id.action_share -> {
-                        val shareIntent = Intent(Intent.ACTION_SEND)
-                        shareIntent.putExtra(Intent.EXTRA_TEXT, viewModel.markdownUpdates.value)
-                        shareIntent.type = "text/plain"
-                        startActivity(Intent.createChooser(
-                                shareIntent,
-                                getString(R.string.share_file)
-                        ))
-                        true
-                    }
-                    R.id.action_load -> {
-                        requestFileOp(REQUEST_OPEN_FILE)
-                        true
-                    }
-                    R.id.action_new -> {
-                        promptSaveOrDiscardChanges()
-                        true
-                    }
-                    R.id.action_lock_swipe -> {
-                        item.isChecked = !item.isChecked
-                        pager!!.setSwipeLocked(item.isChecked)
-                        true
-                    }
-                    else -> item.onNavDestinationSelected(findNavController())
-                }
-            }
-            navigationView.setupWithNavController(this)
-        }
-        val adapter = EditPagerAdapter(childFragmentManager, view.context)
-        pager.adapter = adapter
-        pager.addOnPageChangeListener(adapter)
-        pager.pageMargin = 1
-        pager.setPageMarginDrawable(R.color.colorAccent)
-        tabLayout.setupWithViewPager(pager)
-        if (resources.configuration.orientation == Configuration.ORIENTATION_LANDSCAPE) {
-            tabLayout!!.visibility = View.GONE
-        }
-        @Suppress("CAST_NEVER_SUCCEEDS")
-        viewModel.fileName.observe(viewLifecycleOwner, Observer {
-            toolbar?.title = it
-        })
-    }
-
-    override fun onStart() {
-        super.onStart()
-        launch {
-            withContext(Dispatchers.IO) {
-                val enableErrorReports = PreferenceManager.getDefaultSharedPreferences(requireContext())
-                        .getBoolean(getString(R.string.error_reports_enabled), true)
-                (requireActivity().application as MarkdownApplication).errorHandler.enable(enableErrorReports)
-            }
-        }
-    }
-
-    override fun onPause() {
-        super.onPause()
-        launch {
-            val context = context?.applicationContext ?: return@launch
-            withContext(Dispatchers.IO) {
-                val sharedPrefs = PreferenceManager.getDefaultSharedPreferences(context)
-                val isAutoSaveEnabled = sharedPrefs.getBoolean(KEY_AUTOSAVE, true)
-                if (!shouldAutoSave || !isAutoSaveEnabled) {
-                    return@withContext
-                }
-
-                val uri = if (viewModel.save(context)) {
-                    viewModel.uri.value
-                } else {
-                    // The user has left the app, with autosave enabled, and we don't already have a
-                    // Uri for them or for some reason we were unable to save to the original Uri. In
-                    // this case, we need to just save to internal file storage so that we can recover
-                    val fileUri = Uri.fromFile(File(context.filesDir, viewModel.fileName.value!!))
-                    if (viewModel.save(context, fileUri)) {
-                        fileUri
-                    } else {
-                        null
-                    }
-                } ?: return@withContext
-                sharedPrefs.edit()
-                        .putString(getString(R.string.pref_key_autosave_uri), uri.toString())
-                        .apply()
-            }
-        }
-    }
-
-    override fun onConfigurationChanged(newConfig: Configuration) {
-        super.onConfigurationChanged(newConfig)
-        if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE)
-            tabLayout!!.visibility = View.GONE
-        else
-            tabLayout!!.visibility = View.VISIBLE
-    }
-
-    override fun onRequestPermissionsResult(
-            requestCode: Int,
-            permissions: Array<String>,
-            grantResults: IntArray
-    ) {
-        when (requestCode) {
-            REQUEST_SAVE_FILE, REQUEST_OPEN_FILE -> {
-                // If request is cancelled, the result arrays are empty.
-                if (grantResults.isNotEmpty() && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
-                    // Permission granted, open file save dialog
-                    requestFileOp(requestCode)
-                } else {
-                    // Permission denied, do nothing
-                    context?.let {
-                        Toast.makeText(it, R.string.no_permissions, Toast.LENGTH_SHORT)
-                                .show()
-                    }
-                }
-            }
-        }
-    }
-
-    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
-        when (requestCode) {
-            REQUEST_OPEN_FILE -> {
-                if (resultCode != Activity.RESULT_OK || data?.data == null) {
-                    return
-                }
-
-                launch {
-                    val fileLoaded = context?.let {
-                        viewModel.load(it, data.data)
-                    }
-                    if (fileLoaded == false) {
-                        context?.let {
-                            Toast.makeText(it, R.string.file_load_error, Toast.LENGTH_SHORT)
-                                    .show()
-                        }
-                    }
-                }
-            }
-            REQUEST_SAVE_FILE -> {
-                if (resultCode != Activity.RESULT_OK || data?.data == null) {
-                    return
-                }
-
-                launch {
-                    context?.let {
-                        viewModel.save(it, data.data)
-                    }
-                }
-            }
-        }
-        super.onActivityResult(requestCode, resultCode, data)
-    }
-
-    private fun promptSaveOrDiscardChanges() {
-        if (viewModel.originalMarkdown.value == viewModel.markdownUpdates.value) {
-            viewModel.reset("Untitled.md")
-            return
-        }
-        val context = context ?: return
-        AlertDialog.Builder(context)
-                .setTitle(R.string.save_changes)
-                .setMessage(R.string.prompt_save_changes)
-                .setNegativeButton(R.string.action_discard) { _, _ ->
-                    viewModel.reset("Untitled.md")
-                }
-                .setPositiveButton(R.string.action_save) { _, _ ->
-                    requestFileOp(REQUEST_SAVE_FILE)
-                }
-                .create()
-                .show()
-    }
-
-    private fun requestFileOp(requestType: Int) {
-        val context = context ?: return
-        if (ContextCompat.checkSelfPermission(context, Manifest.permission.WRITE_EXTERNAL_STORAGE)
-                != PackageManager.PERMISSION_GRANTED && Build.VERSION.SDK_INT > 22) {
-            requestPermissions(
-                    arrayOf(Manifest.permission.WRITE_EXTERNAL_STORAGE),
-                    requestType
-            )
-            return
-        }
-        // If the user is going to save the file, we don't want to auto-save it for them
-        shouldAutoSave = false
-        val intent = when (requestType) {
-            REQUEST_SAVE_FILE -> {
-                Intent(Intent.ACTION_CREATE_DOCUMENT).apply {
-                    type = "text/markdown"
-                    putExtra(Intent.EXTRA_TITLE, viewModel.fileName.value)
-                }
-            }
-            REQUEST_OPEN_FILE -> {
-                Intent(Intent.ACTION_OPEN_DOCUMENT).apply {
-                    type = "*/*"
-                    if (MimeTypeMap.getSingleton().hasMimeType("md")) {
-                        // If the device doesn't recognize markdown files then we're not going to be
-                        // able to open them at all, so there's no sense in filtering them out.
-                        putExtra(Intent.EXTRA_MIME_TYPES, arrayOf("text/plain", "text/markdown"))
-                    }
-                }
-            }
-            else -> null
-        } ?: return
-        intent.addCategory(Intent.CATEGORY_OPENABLE)
-        startActivityForResult(
-                intent,
-                requestType
-        )
-    }
-
-    override fun onResume() {
-        super.onResume()
-        shouldAutoSave = true
-    }
-
-    override fun onDestroy() {
-        super.onDestroy()
-        coroutineContext[Job]?.let {
-            cancel()
-        }
-    }
-
-    companion object {
-        // Request codes
-        const val REQUEST_OPEN_FILE = 1
-        const val REQUEST_SAVE_FILE = 2
-        const val REQUEST_DARK_MODE = 4
-        const val KEY_AUTOSAVE = "autosave"
-    }
-}

app/src/main/java/com/wbrawner/simplemarkdown/view/fragment/MarkdownInfoFragment.kt

@@ -1,92 +0,0 @@
-package com.wbrawner.simplemarkdown.view.fragment
-
-import android.content.res.Configuration
-import android.os.Bundle
-import android.view.LayoutInflater
-import android.view.MenuItem
-import android.view.View
-import android.view.ViewGroup
-import android.widget.Toast
-import androidx.appcompat.app.AppCompatDelegate
-import androidx.fragment.app.Fragment
-import androidx.navigation.fragment.findNavController
-import androidx.navigation.ui.setupWithNavController
-import com.wbrawner.simplemarkdown.MarkdownApplication
-import com.wbrawner.simplemarkdown.R
-import com.wbrawner.simplemarkdown.utility.readAssetToString
-import com.wbrawner.simplemarkdown.utility.toHtml
-import kotlinx.android.synthetic.main.fragment_markdown_info.*
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.Job
-import kotlinx.coroutines.launch
-import kotlin.coroutines.CoroutineContext
-
-class MarkdownInfoFragment : Fragment(), CoroutineScope {
-    override val coroutineContext: CoroutineContext = Dispatchers.Main
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        setHasOptionsMenu(true)
-    }
-
-    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? =
-            inflater.inflate(R.layout.fragment_markdown_info, container, false)
-
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        val fileName = arguments?.getString(EXTRA_FILE)
-        if (fileName.isNullOrBlank()) {
-            findNavController().navigateUp()
-            return
-        }
-        toolbar.setupWithNavController(findNavController())
-
-        val isNightMode = AppCompatDelegate.getDefaultNightMode() ==
-                AppCompatDelegate.MODE_NIGHT_YES
-                || resources.configuration.uiMode and Configuration.UI_MODE_NIGHT_MASK == Configuration.UI_MODE_NIGHT_YES
-        val defaultCssId = if (isNightMode) {
-            R.string.pref_custom_css_default_dark
-        } else {
-            R.string.pref_custom_css_default
-        }
-        val css: String? = getString(defaultCssId)
-        launch {
-            try {
-                val html = view.context.assets?.readAssetToString(fileName)
-                        ?.toHtml()
-                        ?: throw RuntimeException("Unable to open stream to $fileName")
-                infoWebview.loadDataWithBaseURL(null,
-                        String.format(FORMAT_CSS, css) + html,
-                        "text/html",
-                        "UTF-8", null
-                )
-            } catch (e: Exception) {
-                (requireActivity().application as MarkdownApplication).errorHandler.reportException(e)
-                Toast.makeText(view.context, R.string.file_load_error, Toast.LENGTH_SHORT).show()
-                findNavController().navigateUp()
-            }
-        }
-    }
-
-    override fun onDestroy() {
-        coroutineContext[Job]?.cancel()
-        super.onDestroy()
-    }
-
-
-    override fun onOptionsItemSelected(item: MenuItem): Boolean {
-        if (item.itemId == android.R.id.home) {
-            findNavController().navigateUp()
-            return true
-        }
-        return super.onOptionsItemSelected(item)
-    }
-
-    companion object {
-        const val FORMAT_CSS = "<style>" +
-                "%s" +
-                "</style>"
-        const val EXTRA_TITLE = "title"
-        const val EXTRA_FILE = "file"
-    }
-}

app/src/main/java/com/wbrawner/simplemarkdown/view/fragment/PreviewFragment.kt

@@ -1,101 +0,0 @@
-package com.wbrawner.simplemarkdown.view.fragment
-
-import android.content.Context
-import android.content.res.Configuration.UI_MODE_NIGHT_MASK
-import android.content.res.Configuration.UI_MODE_NIGHT_YES
-import android.os.Bundle
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import android.webkit.WebView
-import androidx.appcompat.app.AppCompatDelegate
-import androidx.fragment.app.Fragment
-import androidx.fragment.app.activityViewModels
-import androidx.lifecycle.Observer
-import androidx.preference.PreferenceManager
-import com.wbrawner.simplemarkdown.BuildConfig
-import com.wbrawner.simplemarkdown.R
-import com.wbrawner.simplemarkdown.utility.toHtml
-import com.wbrawner.simplemarkdown.viewmodel.MarkdownViewModel
-import kotlinx.coroutines.*
-import kotlin.coroutines.CoroutineContext
-
-class PreviewFragment : Fragment(), CoroutineScope {
-    override val coroutineContext: CoroutineContext = Dispatchers.Main
-    private val viewModel: MarkdownViewModel by activityViewModels()
-    private var markdownPreview: WebView? = null
-    private var style: String = ""
-
-    override fun onCreateView(
-            inflater: LayoutInflater,
-            container: ViewGroup?,
-            savedInstanceState: Bundle?
-    ): View? = inflater.inflate(R.layout.fragment_preview, container, false)
-
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        markdownPreview = view.findViewById(R.id.markdown_view)
-        WebView.setWebContentsDebuggingEnabled(BuildConfig.DEBUG)
-        launch {
-            val isNightMode = AppCompatDelegate.getDefaultNightMode() ==
-                    AppCompatDelegate.MODE_NIGHT_YES
-                    || requireContext().resources.configuration.uiMode and UI_MODE_NIGHT_MASK == UI_MODE_NIGHT_YES
-            val defaultCssId = if (isNightMode) {
-                R.string.pref_custom_css_default_dark
-            } else {
-                R.string.pref_custom_css_default
-            }
-            val css = withContext(Dispatchers.IO) {
-                val context = context ?: return@withContext null
-                @Suppress("ConstantConditionIf")
-                if (!BuildConfig.ENABLE_CUSTOM_CSS) {
-                    context.getString(defaultCssId)
-                } else {
-                    PreferenceManager.getDefaultSharedPreferences(context)
-                            .getString(
-                                    getString(R.string.pref_custom_css),
-                                    getString(defaultCssId)
-                            )
-                }
-            }
-            style = String.format(FORMAT_CSS, css ?: "")
-        }
-    }
-
-    override fun onAttach(context: Context) {
-        super.onAttach(context)
-        updateWebContent(viewModel.markdownUpdates.value ?: "")
-        viewModel.markdownUpdates.observe(this, Observer {
-            updateWebContent(it)
-        })
-    }
-
-    private fun updateWebContent(markdown: String) {
-        markdownPreview?.post {
-            launch {
-                markdownPreview?.loadDataWithBaseURL(null,
-                        style + markdown.toHtml(),
-                        "text/html",
-                        "UTF-8", null
-                )
-            }
-        }
-    }
-
-    override fun onDestroyView() {
-        coroutineContext[Job]?.let {
-            cancel()
-        }
-        markdownPreview?.let {
-            (it.parent as ViewGroup).removeView(it)
-            it.destroy()
-            markdownPreview = null
-        }
-        super.onDestroyView()
-    }
-
-    companion object {
-        var FORMAT_CSS = "<style>" +
-                "%s" +
-                "</style>"
-    }
-}

app/src/main/java/com/wbrawner/simplemarkdown/view/fragment/SettingsContainerFragment.kt

@@ -1,28 +0,0 @@
-package com.wbrawner.simplemarkdown.view.fragment
-
-import android.os.Bundle
-import android.view.LayoutInflater
-import android.view.MenuItem
-import android.view.View
-import android.view.ViewGroup
-import androidx.fragment.app.Fragment
-import androidx.navigation.fragment.findNavController
-import androidx.navigation.ui.setupWithNavController
-import com.wbrawner.simplemarkdown.R
-import kotlinx.android.synthetic.main.fragment_settings.*
-
-class SettingsContainerFragment : Fragment() {
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        setHasOptionsMenu(true)
-    }
-
-    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? =
-            inflater.inflate(R.layout.fragment_settings, container, false)
-
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        toolbar.setupWithNavController(findNavController())
-    }
-
-    override fun onOptionsItemSelected(item: MenuItem): Boolean = findNavController().navigateUp()
-}

app/src/main/java/com/wbrawner/simplemarkdown/view/fragment/SettingsFragment.kt

@@ -1,75 +0,0 @@
-package com.wbrawner.simplemarkdown.view.fragment
-
-import android.content.SharedPreferences
-import android.os.Build
-import android.os.Bundle
-import androidx.appcompat.app.AppCompatDelegate
-import androidx.preference.ListPreference
-import androidx.preference.PreferenceFragmentCompat
-import androidx.preference.PreferenceManager
-import com.wbrawner.simplemarkdown.BuildConfig
-import com.wbrawner.simplemarkdown.R
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.launch
-import kotlin.coroutines.CoroutineContext
-
-class SettingsFragment
-    : PreferenceFragmentCompat(),
-        SharedPreferences.OnSharedPreferenceChangeListener,
-        CoroutineScope {
-    override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
-        addPreferencesFromResource(R.xml.pref_general)
-    }
-
-    override val coroutineContext: CoroutineContext = Dispatchers.Main
-
-    override fun onActivityCreated(savedInstanceState: Bundle?) {
-        super.onActivityCreated(savedInstanceState)
-        launch(context = Dispatchers.IO) {
-            val sharedPreferences = PreferenceManager.getDefaultSharedPreferences(activity)
-            sharedPreferences.registerOnSharedPreferenceChangeListener(this@SettingsFragment)
-            (findPreference(getString(R.string.pref_key_dark_mode)) as? ListPreference)?.let {
-                setListPreferenceSummary(sharedPreferences, it)
-            }
-            @Suppress("ConstantConditionIf")
-            if (!BuildConfig.ENABLE_CUSTOM_CSS) {
-                preferenceScreen.removePreference(findPreference(getString(R.string.pref_custom_css)))
-            }
-        }
-    }
-
-    override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences, key: String) {
-        if (!isAdded) return
-        val preference = findPreference(key) as? ListPreference ?: return
-        setListPreferenceSummary(sharedPreferences, preference)
-        if (preference.key != getString(R.string.pref_key_dark_mode)) {
-            return
-        }
-        var darkMode: Int = if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.P) {
-            AppCompatDelegate.MODE_NIGHT_AUTO_BATTERY
-        } else {
-            AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM
-        }
-        val darkModeValue = sharedPreferences.getString(preference.key, null)
-        if (darkModeValue != null && darkModeValue.isNotEmpty()) {
-            if (darkModeValue.equals(getString(R.string.pref_value_light), ignoreCase = true)) {
-                darkMode = AppCompatDelegate.MODE_NIGHT_NO
-            } else if (darkModeValue.equals(getString(R.string.pref_value_dark), ignoreCase = true)) {
-                darkMode = AppCompatDelegate.MODE_NIGHT_YES
-            }
-        }
-        AppCompatDelegate.setDefaultNightMode(darkMode)
-        activity?.recreate()
-    }
-
-    private fun setListPreferenceSummary(sharedPreferences: SharedPreferences, preference: ListPreference) {
-        val storedValue = sharedPreferences.getString(
-                preference.key,
-                null
-        ) ?: return
-        val index = preference.findIndexOfValue(storedValue)
-        if (index < 0) return
-        preference.summary = preference.entries[index].toString()
-    }
-}

app/src/main/java/com/wbrawner/simplemarkdown/view/fragment/SupportFragment.kt

@@ -1,61 +0,0 @@
-package com.wbrawner.simplemarkdown.view.fragment
-
-import android.content.ActivityNotFoundException
-import android.content.Intent
-import android.net.Uri
-import android.os.Bundle
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import androidx.browser.customtabs.CustomTabsIntent
-import androidx.fragment.app.Fragment
-import androidx.lifecycle.Observer
-import androidx.navigation.fragment.findNavController
-import androidx.navigation.ui.setupWithNavController
-import com.wbrawner.simplemarkdown.R
-import com.wbrawner.simplemarkdown.utility.SupportLinkProvider
-import kotlinx.android.synthetic.main.fragment_support.*
-
-class SupportFragment : Fragment() {
-    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? =
-            inflater.inflate(R.layout.fragment_support, container, false)
-
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        toolbar.setupWithNavController(findNavController())
-        githubButton.setOnClickListener {
-            CustomTabsIntent.Builder()
-                    .addDefaultShareMenuItem()
-                    .build()
-                    .launchUrl(view.context, Uri.parse("https://github" +
-                            ".com/wbrawner/SimpleMarkdown"))
-        }
-        rateButton.setOnClickListener {
-            val playStoreIntent = Intent(Intent.ACTION_VIEW)
-                    .apply {
-                        data = Uri.parse("market://details?id=${view.context.packageName}")
-                        addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY or
-                                Intent.FLAG_ACTIVITY_NEW_DOCUMENT or
-                                Intent.FLAG_ACTIVITY_MULTIPLE_TASK)
-                    }
-            try {
-                startActivity(playStoreIntent)
-            } catch (ignored: ActivityNotFoundException) {
-                playStoreIntent.data = Uri.parse("https://play.google.com/store/apps/details?id=${view.context.packageName}")
-                startActivity(playStoreIntent)
-            }
-        }
-        SupportLinkProvider(requireActivity()).supportLinks.observe(viewLifecycleOwner, Observer { links ->
-            links.forEach {
-                supportButtons.addView(it)
-            }
-        })
-    }
-
-//    override fun onOptionsItemSelected(item: MenuItem): Boolean {
-//        if (item.itemId == android.R.id.home) {
-//            findNavController().navigateUp()
-//            return true
-//        }
-//        return super.onOptionsItemSelected(item)
-//    }
-}

app/src/main/java/com/wbrawner/simplemarkdown/viewmodel/MarkdownViewModel.kt

@@ -1,68 +0,0 @@
-package com.wbrawner.simplemarkdown.viewmodel
-
-import android.content.Context
-import android.net.Uri
-import androidx.lifecycle.MutableLiveData
-import androidx.lifecycle.ViewModel
-import com.wbrawner.simplemarkdown.utility.getName
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.withContext
-import java.io.FileInputStream
-import java.io.Reader
-
-class MarkdownViewModel : ViewModel() {
-    val fileName = MutableLiveData<String>("Untitled.md")
-    val markdownUpdates = MutableLiveData<String>()
-    val originalMarkdown = MutableLiveData<String>()
-    val uri = MutableLiveData<Uri>()
-
-    fun updateMarkdown(markdown: String?) {
-        this.markdownUpdates.postValue(markdown ?: "")
-    }
-
-    suspend fun load(context: Context, uri: Uri?): Boolean {
-        if (uri == null) return false
-        return withContext(Dispatchers.IO) {
-            try {
-                context.contentResolver.openFileDescriptor(uri, "r")?.use {
-                    val fileInput = FileInputStream(it.fileDescriptor)
-                    val fileName = uri.getName(context)
-                    val content = fileInput.reader().use(Reader::readText)
-                    originalMarkdown.postValue(content)
-                    markdownUpdates.postValue(content)
-                    this@MarkdownViewModel.fileName.postValue(fileName)
-                    this@MarkdownViewModel.uri.postValue(uri)
-                    true
-                } ?: false
-            } catch (ignored: Exception) {
-                false
-            }
-        }
-    }
-
-    suspend fun save(context: Context, givenUri: Uri? = this.uri.value): Boolean {
-        val uri = givenUri ?: this.uri.value ?: return false
-        return withContext(Dispatchers.IO) {
-            try {
-                val fileName = uri.getName(context)
-                context.contentResolver.openOutputStream(uri, "rwt")
-                        ?.writer()
-                        ?.use {
-                            it.write(markdownUpdates.value ?: "")
-                        }
-                        ?: return@withContext false
-                this@MarkdownViewModel.fileName.postValue(fileName)
-                this@MarkdownViewModel.uri.postValue(uri)
-                true
-            } catch (ignored: Exception) {
-                false
-            }
-        }
-    }
-
-    fun reset(untitledFileName: String) {
-        fileName.postValue(untitledFileName)
-        originalMarkdown.postValue("")
-        markdownUpdates.postValue("")
-    }
-}

app/src/main/res/drawable/ic_action_select.xml

@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportHeight="24.0"
-    android:viewportWidth="24.0">
-    <path
-        android:fillColor="#FFFFFFFF"
-        android:pathData="M9,16.2L4.8,12l-1.4,1.4L9,19 21,7l-1.4,-1.4L9,16.2z" />
-</vector>

app/src/main/res/drawable/ic_eye_black_24dp.xml

@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportWidth="24.0"
-    android:viewportHeight="24.0">
-    <path
-        android:fillColor="#FF000000"
-        android:pathData="M12,4.5C7,4.5 2.73,7.61 1,12c1.73,4.39 6,7.5 11,7.5s9.27,-3.11 11,-7.5c-1.73,-4.39 -6,-7.5 -11,-7.5zM12,17c-2.76,0 -5,-2.24 -5,-5s2.24,-5 5,-5 5,2.24 5,5 -2.24,5 -5,5zM12,9c-1.66,0 -3,1.34 -3,3s1.34,3 3,3 3,-1.34 3,-3 -1.34,-3 -3,-3z" />
-</vector>

app/src/main/res/drawable/ic_favorite_black_24dp.xml

@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportWidth="24.0"
-    android:viewportHeight="24.0">
-    <path
-        android:fillColor="#FF000000"
-        android:pathData="M12,21.35l-1.45,-1.32C5.4,15.36 2,12.28 2,8.5 2,5.42 4.42,3 7.5,3c1.74,0 3.41,0.81 4.5,2.09C13.09,3.81 14.76,3 16.5,3 19.58,3 22,5.42 22,8.5c0,3.78 -3.4,6.86 -8.55,11.54L12,21.35z" />
-</vector>

app/src/main/res/drawable/ic_help_black_24dp.xml

@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportWidth="24.0"
-    android:viewportHeight="24.0">
-    <path
-        android:fillColor="#FF000000"
-        android:pathData="M12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10,-4.48 10,-10S17.52,2 12,2zM13,19h-2v-2h2v2zM15.07,11.25l-0.9,0.92C13.45,12.9 13,13.5 13,15h-2v-0.5c0,-1.1 0.45,-2.1 1.17,-2.83l1.24,-1.26c0.37,-0.36 0.59,-0.86 0.59,-1.41 0,-1.1 -0.9,-2 -2,-2s-2,0.9 -2,2L8,9c0,-2.21 1.79,-4 4,-4s4,1.79 4,4c0,0.88 -0.36,1.68 -0.93,2.25z" />
-</vector>

app/src/main/res/drawable/ic_info_black_24dp.xml

@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportWidth="24.0"
-    android:viewportHeight="24.0">
-    <path
-        android:fillColor="#FF000000"
-        android:pathData="M12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10,-4.48 10,-10S17.52,2 12,2zM13,17h-2v-6h2v6zM13,9h-2L11,7h2v2z" />
-</vector>

app/src/main/res/drawable/ic_launcher_foreground.xml

@@ -0,0 +1,24 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+  <group
+      android:scaleX="0.39862207"
+      android:scaleY="0.39862207"
+      android:translateX="27"
+      android:translateY="27">
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M55.033,2.91h25.4v129.646h-25.4z"
+        android:strokeWidth="0.53079969" />
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M2.725,44.865l12.7,-21.997l117.318,67.733l-12.7,21.997z"
+        android:strokeWidth="0.54258478" />
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M120.042,22.868l12.7,21.997l-117.318,67.733l-12.7,-21.997z"
+        android:strokeWidth="0.54258478" />
+  </group>
+</vector>

app/src/main/res/drawable/ic_menu_black_24dp.xml

@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportWidth="24.0"
-    android:viewportHeight="24.0">
-    <path
-        android:fillColor="@color/colorOnBackground"
-        android:pathData="M3,18h18v-2L3,16v2zM3,13h18v-2L3,11v2zM3,6v2h18L21,6L3,6z" />
-</vector>

app/src/main/res/drawable/ic_settings_black_24dp.xml

@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportWidth="24"
-    android:viewportHeight="24">
-    <path
-        android:fillColor="#FF000000"
-        android:pathData="M19.1,12.9a2.8,2.8 0,0 0,0.1 -0.9,2.8 2.8,0 0,0 -0.1,-0.9l2.1,-1.6a0.7,0.7 0,0 0,0.1 -0.6L19.4,5.5a0.7,0.7 0,0 0,-0.6 -0.2l-2.4,1a6.5,6.5 0,0 0,-1.6 -0.9l-0.4,-2.6a0.5,0.5 0,0 0,-0.5 -0.4H10.1a0.5,0.5 0,0 0,-0.5 0.4L9.3,5.4a5.6,5.6 0,0 0,-1.7 0.9l-2.4,-1a0.4,0.4 0,0 0,-0.5 0.2l-2,3.4c-0.1,0.2 0,0.4 0.2,0.6l2,1.6a2.8,2.8 0,0 0,-0.1 0.9,2.8 2.8,0 0,0 0.1,0.9L2.8,14.5a0.7,0.7 0,0 0,-0.1 0.6l1.9,3.4a0.7,0.7 0,0 0,0.6 0.2l2.4,-1a6.5,6.5 0,0 0,1.6 0.9l0.4,2.6a0.5,0.5 0,0 0,0.5 0.4h3.8a0.5,0.5 0,0 0,0.5 -0.4l0.3,-2.6a5.6,5.6 0,0 0,1.7 -0.9l2.4,1a0.4,0.4 0,0 0,0.5 -0.2l2,-3.4c0.1,-0.2 0,-0.4 -0.2,-0.6ZM12,15.6A3.6,3.6 0,1 1,15.6 12,3.6 3.6,0 0,1 12,15.6Z" />
-</vector>

app/src/main/res/drawable/ic_share.xml

@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportWidth="24.0"
-    android:viewportHeight="24.0">
-    <path
-        android:fillColor="@color/colorOnBackground"
-        android:pathData="M18,16.08c-0.76,0 -1.44,0.3 -1.96,0.77L8.91,12.7c0.05,-0.23 0.09,-0.46 0.09,-0.7s-0.04,-0.47 -0.09,-0.7l7.05,-4.11c0.54,0.5 1.25,0.81 2.04,0.81 1.66,0 3,-1.34 3,-3s-1.34,-3 -3,-3 -3,1.34 -3,3c0,0.24 0.04,0.47 0.09,0.7L8.04,9.81C7.5,9.31 6.79,9 6,9c-1.66,0 -3,1.34 -3,3s1.34,3 3,3c0.79,0 1.5,-0.31 2.04,-0.81l7.12,4.16c-0.05,0.21 -0.08,0.43 -0.08,0.65 0,1.61 1.31,2.92 2.92,2.92 1.61,0 2.92,-1.31 2.92,-2.92s-1.31,-2.92 -2.92,-2.92z" />
-</vector>

app/src/main/res/drawable/splash_bg.xml

@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
-    <item
-        android:top="0dp"
-        android:bottom="0dp"
-        android:left="0dp"
-        android:right="0dp"
-        android:drawable="@color/colorPrimary"/>
-    <item
-        android:drawable="@drawable/splash_fg"
-        android:gravity="center"/>
-</layer-list>

app/src/main/res/layout-land/fragment_main.xml

@@ -1,61 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.drawerlayout.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:id="@+id/drawerLayout">
-
-    <androidx.coordinatorlayout.widget.CoordinatorLayout
-        android:layout_width="match_parent"
-        android:layout_height="match_parent">
-
-        <com.wbrawner.simplemarkdown.view.DisableableViewPager
-            android:id="@+id/pager"
-            android:layout_width="match_parent"
-            android:layout_height="match_parent"
-            app:layout_behavior="@string/appbar_scrolling_view_behavior" />
-
-        <com.google.android.material.appbar.AppBarLayout
-            android:id="@+id/bottomSheet"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content">
-
-            <com.google.android.material.appbar.MaterialToolbar
-                android:id="@+id/toolbar"
-                android:layout_width="match_parent"
-                android:layout_height="?attr/actionBarSize"
-                android:background="@color/colorBackground"
-                app:layout_scrollFlags="scroll|enterAlways" />
-
-            <com.google.android.material.tabs.TabLayout
-                android:id="@+id/tabLayout"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:background="@color/colorBackground"
-                android:visibility="gone">
-
-                <com.google.android.material.tabs.TabItem
-                    android:id="@+id/editTab"
-                    android:layout_width="0dp"
-                    android:layout_height="wrap_content"
-                    android:text="@string/action_edit" />
-
-                <com.google.android.material.tabs.TabItem
-                    android:id="@+id/previewTab"
-                    android:layout_width="0dp"
-                    android:layout_height="wrap_content"
-                    android:text="@string/action_preview" />
-            </com.google.android.material.tabs.TabLayout>
-
-        </com.google.android.material.appbar.AppBarLayout>
-    </androidx.coordinatorlayout.widget.CoordinatorLayout>
-
-    <com.google.android.material.navigation.NavigationView
-        android:id="@+id/navigationView"
-        android:layout_width="wrap_content"
-        android:layout_height="match_parent"
-        android:layout_gravity="start"
-        android:fitsSystemWindows="true"
-        app:menu="@menu/menu_main" />
-
-</androidx.drawerlayout.widget.DrawerLayout>

app/src/main/res/layout/activity_main.xml

@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.fragment.app.FragmentContainerView xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:id="@+id/content"
-    android:name="androidx.navigation.fragment.NavHostFragment"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    app:defaultNavHost="true"
-    app:navGraph="@navigation/nav_graph" />

app/src/main/res/layout/fragment_edit.xml

@@ -1,23 +0,0 @@
-<androidx.core.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:id="@+id/markdown_edit_container"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    tools:context="com.wbrawner.simplemarkdown.view.fragment.EditFragment">
-
-    <EditText
-        android:id="@+id/markdown_edit"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:background="@null"
-        android:gravity="top"
-        android:fontFamily="monospace"
-        android:hint="@string/markdown_here"
-        android:imeOptions="flagNoExtractUi"
-        android:inputType="textMultiLine|textCapSentences"
-        android:paddingLeft="8dp"
-        android:paddingRight="8dp"
-        android:paddingBottom="16dp"
-        android:scrollHorizontally="false"
-        android:importantForAutofill="no" />
-</androidx.core.widget.NestedScrollView>

app/src/main/res/layout/fragment_main.xml

@@ -1,63 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.drawerlayout.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:background="@color/colorBackground"
-    android:id="@+id/drawerLayout">
-
-    <androidx.coordinatorlayout.widget.CoordinatorLayout
-        android:layout_width="match_parent"
-        android:layout_height="match_parent">
-
-        <com.wbrawner.simplemarkdown.view.DisableableViewPager
-            android:id="@+id/pager"
-            android:layout_width="match_parent"
-            android:layout_height="match_parent"
-            app:layout_behavior="@string/appbar_scrolling_view_behavior" />
-
-        <com.google.android.material.appbar.AppBarLayout
-            android:id="@+id/bottomSheet"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            app:liftOnScroll="true">
-
-            <com.google.android.material.appbar.MaterialToolbar
-                android:id="@+id/toolbar"
-                android:layout_width="match_parent"
-                android:layout_height="?attr/actionBarSize"
-                android:background="@color/colorBackground"
-                app:layout_scrollFlags="scroll|enterAlways|snap" />
-
-            <com.google.android.material.tabs.TabLayout
-                android:id="@+id/tabLayout"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:layout_gravity="bottom"
-                android:background="@color/colorBackground">
-
-                <com.google.android.material.tabs.TabItem
-                    android:id="@+id/editTab"
-                    android:layout_width="0dp"
-                    android:layout_height="wrap_content"
-                    android:text="@string/action_edit" />
-
-                <com.google.android.material.tabs.TabItem
-                    android:id="@+id/previewTab"
-                    android:layout_width="0dp"
-                    android:layout_height="wrap_content"
-                    android:text="@string/action_preview" />
-            </com.google.android.material.tabs.TabLayout>
-
-        </com.google.android.material.appbar.AppBarLayout>
-    </androidx.coordinatorlayout.widget.CoordinatorLayout>
-
-    <com.google.android.material.navigation.NavigationView
-        android:id="@+id/navigationView"
-        android:layout_width="wrap_content"
-        android:layout_height="match_parent"
-        android:layout_gravity="start"
-        android:fitsSystemWindows="true"
-        app:menu="@menu/menu_main" />
-
-</androidx.drawerlayout.widget.DrawerLayout>

app/src/main/res/layout/fragment_markdown_info.xml

@@ -1,43 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    tools:context="com.wbrawner.simplemarkdown.view.fragment.MarkdownInfoFragment">
-
-    <com.google.android.material.appbar.AppBarLayout
-        android:id="@+id/appBarLayout"
-        android:layout_width="match_parent"
-        android:layout_height="128dp"
-        android:background="@color/colorBackground">
-
-        <com.google.android.material.appbar.CollapsingToolbarLayout
-            android:layout_width="match_parent"
-            android:layout_height="match_parent"
-            app:layout_scrollFlags="scroll|exitUntilCollapsed|snap">
-
-            <com.google.android.material.appbar.MaterialToolbar
-                android:id="@+id/toolbar"
-                android:layout_width="match_parent"
-                android:layout_height="?attr/actionBarSize"
-                android:elevation="0dp"
-                app:layout_collapseMode="pin" />
-
-        </com.google.android.material.appbar.CollapsingToolbarLayout>
-
-    </com.google.android.material.appbar.AppBarLayout>
-
-    <androidx.core.widget.NestedScrollView
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        app:layout_behavior="@string/appbar_scrolling_view_behavior">
-
-        <WebView
-            android:id="@+id/infoWebview"
-            android:layout_width="match_parent"
-            android:layout_height="match_parent"
-            android:nestedScrollingEnabled="false" />
-    </androidx.core.widget.NestedScrollView>
-
-</androidx.coordinatorlayout.widget.CoordinatorLayout>

app/src/main/res/layout/fragment_preview.xml

@@ -1,13 +0,0 @@
-<androidx.core.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    tools:context="com.wbrawner.simplemarkdown.view.fragment.PreviewFragment">
-
-    <WebView
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:nestedScrollingEnabled="false"
-        android:id="@+id/markdown_view" />
-
-</androidx.core.widget.NestedScrollView>

app/src/main/res/layout/fragment_settings.xml

@@ -1,26 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:orientation="vertical">
-
-    <com.google.android.material.appbar.AppBarLayout
-        android:id="@+id/appBarLayout"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content">
-
-        <com.google.android.material.appbar.MaterialToolbar
-            android:id="@+id/toolbar"
-            android:layout_width="match_parent"
-            android:layout_height="?attr/actionBarSize"
-            android:background="@color/colorBackground" />
-    </com.google.android.material.appbar.AppBarLayout>
-
-    <androidx.fragment.app.FragmentContainerView
-        android:id="@+id/fragment_settings"
-        android:name="com.wbrawner.simplemarkdown.view.fragment.SettingsFragment"
-        android:layout_width="match_parent"
-        android:layout_height="0dp"
-        android:layout_weight="1" />
-
-</LinearLayout>

app/src/main/res/layout/fragment_support.xml

@@ -1,78 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent">
-
-    <com.google.android.material.appbar.MaterialToolbar
-        android:id="@+id/toolbar"
-        android:layout_width="match_parent"
-        android:layout_height="?attr/actionBarSize"
-        android:background="@color/colorBackground"
-        app:layout_constraintTop_toTopOf="parent" />
-
-    <ScrollView
-        android:layout_width="match_parent"
-        android:layout_height="0dp"
-        android:clipChildren="false"
-        android:clipToPadding="false"
-        android:padding="16dp"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/toolbar">
-
-        <androidx.constraintlayout.widget.ConstraintLayout
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content">
-
-            <ImageView
-                android:id="@+id/heartIcon"
-                android:layout_width="100dp"
-                android:layout_height="100dp"
-                android:src="@drawable/ic_favorite_black_24dp"
-                android:tint="@color/colorAccent"
-                android:contentDescription="@string/description_heart"
-                app:layout_constraintEnd_toEndOf="parent"
-                app:layout_constraintStart_toStartOf="parent"
-                app:layout_constraintTop_toTopOf="parent" />
-
-            <TextView
-                android:id="@+id/supportInfoText"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:padding="16dp"
-                android:text="@string/support_info"
-                android:textAlignment="center"
-                android:textColor="@color/colorOnBackground"
-                app:layout_constraintTop_toBottomOf="@+id/heartIcon" />
-
-            <com.google.android.material.button.MaterialButton
-                android:id="@+id/githubButton"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:backgroundTint="@color/colorBackgroundGitHub"
-                android:textColor="@color/colorWhite"
-                android:text="@string/action_view_github"
-                app:layout_constraintTop_toBottomOf="@+id/supportInfoText" />
-
-            <com.google.android.material.button.MaterialButton
-                android:id="@+id/rateButton"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:backgroundTint="@color/colorBackgroundPlayStore"
-                android:textColor="@color/colorWhite"
-                android:text="@string/action_rate"
-                app:layout_constraintTop_toBottomOf="@+id/githubButton" />
-
-            <LinearLayout
-                android:id="@+id/supportButtons"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:layout_marginTop="16dp"
-                android:orientation="vertical"
-                app:layout_constraintTop_toBottomOf="@+id/rateButton" />
-
-        </androidx.constraintlayout.widget.ConstraintLayout>
-
-    </ScrollView>
-
-</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/menu/menu_edit.xml

@@ -1,28 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<menu xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
-    <item
-        android:id="@+id/action_share"
-        android:icon="@drawable/ic_share"
-        android:title="@string/action_share"
-        app:showAsAction="ifRoom" />
-    <item
-        android:id="@+id/action_new"
-        android:title="@string/action_new"
-        app:showAsAction="never" />
-    <item
-        android:id="@+id/action_load"
-        android:title="@string/action_open"
-        app:showAsAction="never" />
-    <item
-        android:id="@+id/action_save"
-        android:title="@string/action_save" />
-    <item
-        android:id="@+id/action_save_as"
-        android:title="@string/action_save_as" />
-    <item
-        android:id="@+id/action_lock_swipe"
-        android:checkable="true"
-        android:title="@string/action_lock_swipe"
-        app:showAsAction="never" />
-</menu>

app/src/main/res/menu/menu_main.xml

@@ -1,33 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<menu xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
-    <group android:id="@+id/mainGroup">
-        <item
-            android:id="@+id/action_mainFragment_to_settingsContainerFragment"
-            android:title="@string/action_settings"
-            android:icon="@drawable/ic_settings_black_24dp"
-            app:showAsAction="never" />
-        <item
-            android:id="@+id/action_mainFragment_to_supportFragment"
-            android:title="@string/support_title"
-            android:icon="@drawable/ic_favorite_black_24dp"
-            app:showAsAction="never" />
-    </group>
-    <group android:id="@+id/addtionalInfoGroup">
-        <item
-            android:id="@+id/action_mainFragment_to_helpFragment"
-            android:title="@string/action_help"
-            android:icon="@drawable/ic_help_black_24dp"
-            app:showAsAction="never" />
-        <item
-            android:id="@+id/action_mainFragment_to_librariesFragment"
-            android:title="@string/action_libraries"
-            android:icon="@drawable/ic_info_black_24dp"
-            app:showAsAction="never" />
-        <item
-            android:id="@+id/action_mainFragment_to_privacyFragment"
-            android:title="@string/action_privacy"
-            android:icon="@drawable/ic_eye_black_24dp"
-            app:showAsAction="never" />
-    </group>
-</menu>

app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
     <background android:drawable="@color/ic_launcher_background"/>
-    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
 </adaptive-icon>

app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
     <background android:drawable="@color/ic_launcher_background"/>
-    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
 </adaptive-icon>

app/src/main/res/navigation/nav_graph.xml

@@ -1,87 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<navigation xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:id="@+id/nav_graph"
-    app:startDestination="@+id/mainFragment">
-
-    <fragment
-        android:id="@+id/settingsContainerFragment"
-        android:name="com.wbrawner.simplemarkdown.view.fragment.SettingsContainerFragment"
-        android:label="@string/title_activity_settings" />
-    <fragment
-        android:id="@+id/mainFragment"
-        android:name="com.wbrawner.simplemarkdown.view.fragment.MainFragment"
-        android:label="">
-        <action
-            android:id="@+id/action_mainFragment_to_helpFragment"
-            app:destination="@id/helpFragment"
-            app:enterAnim="@android:anim/slide_in_left"
-            app:exitAnim="@android:anim/slide_out_right"
-            app:popExitAnim="@android:anim/slide_out_right"
-            app:popUpTo="@id/mainFragment" />
-        <action
-            android:id="@+id/action_mainFragment_to_privacyFragment"
-            app:destination="@id/privacyFragment"
-            app:enterAnim="@android:anim/slide_in_left"
-            app:exitAnim="@android:anim/slide_out_right"
-            app:popExitAnim="@android:anim/slide_out_right"
-            app:popUpTo="@id/mainFragment" />
-        <action
-            android:id="@+id/action_mainFragment_to_librariesFragment"
-            app:destination="@id/librariesFragment"
-            app:enterAnim="@android:anim/slide_in_left"
-            app:exitAnim="@android:anim/slide_out_right"
-            app:popExitAnim="@android:anim/slide_out_right"
-            app:popUpTo="@id/mainFragment" />
-        <action
-            android:id="@+id/action_mainFragment_to_settingsContainerFragment"
-            app:destination="@id/settingsContainerFragment"
-            app:enterAnim="@android:anim/slide_in_left"
-            app:exitAnim="@android:anim/slide_out_right"
-            app:popExitAnim="@android:anim/slide_out_right"
-            app:popUpTo="@id/mainFragment" />
-        <action
-            android:id="@+id/action_mainFragment_to_supportFragment"
-            app:destination="@id/supportFragment"
-            app:enterAnim="@anim/nav_default_enter_anim"
-            app:exitAnim="@anim/nav_default_exit_anim"
-            app:popEnterAnim="@anim/nav_default_pop_enter_anim"
-            app:popExitAnim="@anim/nav_default_pop_exit_anim"
-            app:popUpTo="@id/mainFragment" />
-    </fragment>
-    <fragment
-        android:id="@+id/supportFragment"
-        android:name="com.wbrawner.simplemarkdown.view.fragment.SupportFragment"
-        android:label="@string/support_title" />
-    <fragment
-        android:id="@+id/helpFragment"
-        android:name="com.wbrawner.simplemarkdown.view.fragment.MarkdownInfoFragment"
-        android:label="@string/action_help"
-        tools:layout="@layout/fragment_markdown_info">
-        <argument
-            android:name="file"
-            app:argType="string"
-            android:defaultValue="Cheatsheet.md" />
-    </fragment>
-    <fragment
-        android:id="@+id/privacyFragment"
-        android:name="com.wbrawner.simplemarkdown.view.fragment.MarkdownInfoFragment"
-        android:label="@string/action_privacy"
-        tools:layout="@layout/fragment_markdown_info">
-        <argument
-            android:name="file"
-            android:defaultValue="Privacy Policy.md"
-            app:argType="string" />
-    </fragment>
-    <fragment
-        android:id="@+id/librariesFragment"
-        android:name="com.wbrawner.simplemarkdown.view.fragment.MarkdownInfoFragment"
-        android:label="@string/action_libraries"
-        tools:layout="@layout/fragment_markdown_info">
-        <argument
-            android:name="file"
-            android:defaultValue="Libraries.md"
-            app:argType="string" />
-    </fragment>
-</navigation>

app/src/main/res/values-night/colors.xml

@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-    <color name="colorBackground">#000000</color>
-    <color name="colorOnBackground">#FFFFFF</color>
-</resources>