Add NavigationDrawer to MainActivity to switch between budgets or create new ones

android/src/main/java/com/wbrawner/budget/AppComponent.kt

@@ -4,6 +4,7 @@ import android.content.Context
 import com.wbrawner.budget.common.util.ErrorHandler
 import com.wbrawner.budget.lib.network.NetworkModule
 import com.wbrawner.budget.storage.StorageModule
+import com.wbrawner.budget.ui.MainViewModel
 import com.wbrawner.budget.ui.SplashViewModel
 import com.wbrawner.budget.ui.budgets.BudgetFormViewModel
 import com.wbrawner.budget.ui.budgets.BudgetListViewModel
@@ -15,7 +16,6 @@ import com.wbrawner.budget.ui.transactions.TransactionFormViewModel
 import com.wbrawner.budget.ui.transactions.TransactionListViewModel
 import dagger.BindsInstance
 import dagger.Component
-import javax.inject.Named
 import javax.inject.Singleton
 
 @Singleton
@@ -23,6 +23,7 @@ import javax.inject.Singleton
 interface AppComponent {
     fun inject(viewModel: OverviewViewModel)
     fun inject(viewModel: SplashViewModel)
+    fun inject(viewModel: MainViewModel)
     fun inject(viewMode: BudgetListViewModel)
     fun inject(viewModel: BudgetFormViewModel)
     fun inject(viewModel: CategoryListViewModel)

android/src/main/java/com/wbrawner/budget/ui/MainActivity.kt

@@ -2,43 +2,95 @@ package com.wbrawner.budget.ui
 
 import android.os.Bundle
 import android.view.MenuItem
+import androidx.activity.viewModels
+import androidx.appcompat.app.ActionBarDrawerToggle
 import androidx.appcompat.app.AppCompatActivity
 import androidx.emoji.text.EmojiCompat
 import androidx.navigation.findNavController
 import androidx.navigation.ui.setupWithNavController
+import com.google.android.material.navigation.NavigationView
+import com.wbrawner.budget.AllowanceApplication
 import com.wbrawner.budget.R
 import kotlinx.android.synthetic.main.activity_main.*
 
-class MainActivity : AppCompatActivity() {
+private const val MENU_GROUP_BUDGETS = 50
+private const val MENU_ITEM_ADD_BUDGET = 100
+private const val MENU_ITEM_SETTINGS = 101
+
+class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelectedListener {
+    private lateinit var toggle: ActionBarDrawerToggle
+    private val viewModel: MainViewModel by viewModels()
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         EmojiCompat.init(androidx.emoji.bundled.BundledEmojiCompatConfig(this))
         setContentView(R.layout.activity_main)
+        (application as AllowanceApplication).appComponent.inject(viewModel)
         setSupportActionBar(action_bar)
+        toggle = ActionBarDrawerToggle(this, drawerLayout, R.string.action_open, R.string.action_close)
+        toggle.isDrawerIndicatorEnabled = true
+        toggle.isDrawerSlideAnimationEnabled = true
+        drawerLayout.addDrawerListener(toggle)
+        navigationView.setNavigationItemSelectedListener(this)
+        supportActionBar?.setHomeButtonEnabled(true)
+        supportActionBar?.setDisplayHomeAsUpEnabled(true)
         val navController = findNavController(R.id.content_container)
         menu_main.setupWithNavController(navController)
         navController.addOnDestinationChangedListener { _, destination, _ ->
             title = destination.label
-            val showHomeAsUp = when (destination.label) {
-                getString(R.string.title_overview) -> false
-                getString(R.string.title_transactions) -> false
-                getString(R.string.title_profile) -> false
-                getString(R.string.title_categories) -> false
-                else -> true
+            val homeAsUpIndicator = when (destination.label) {
+                getString(R.string.title_overview) -> R.drawable.ic_menu
+                getString(R.string.title_transactions) -> R.drawable.ic_menu
+                getString(R.string.title_profile) -> R.drawable.ic_menu
+                getString(R.string.title_categories) -> R.drawable.ic_menu
+                else -> 0
             }
-            supportActionBar?.setDisplayHomeAsUpEnabled(showHomeAsUp)
+            supportActionBar?.setHomeAsUpIndicator(homeAsUpIndicator)
         }
+        viewModel.loadBudgets().observe(this, { list ->
+            val menu = navigationView.menu
+            menu.clear()
+            val budgetsMenu = navigationView.menu.addSubMenu(0, 0, 0, "Budgets")
+            list.budgets.forEachIndexed { index, budget ->
+                budgetsMenu.add(MENU_GROUP_BUDGETS, index, index, budget.name)
+                        .setIcon(R.drawable.ic_folder_selectable)
+            }
+            budgetsMenu.setGroupCheckable(MENU_GROUP_BUDGETS, true, true)
+            list.selectedIndex?.let {
+                budgetsMenu.getItem(it).isChecked = true
+            }
+            menu.add(0, MENU_ITEM_ADD_BUDGET, list.budgets.size, R.string.title_add_budget)
+                    .setIcon(R.drawable.ic_add_white_24dp)
+            menu.add(1, MENU_ITEM_SETTINGS, list.budgets.size + 1, "Settings")
+                    .setIcon(R.drawable.ic_settings)
+        })
     }
 
     override fun onOptionsItemSelected(item: MenuItem): Boolean {
-        if (item.itemId == android.R.id.home) {
-            findNavController(R.id.content_container).navigateUp()
-            return true
+        if (item.itemId != android.R.id.home) return super.onOptionsItemSelected(item)
+        with(findNavController(R.id.content_container)) {
+            when (currentDestination?.label) {
+                getString(R.string.title_overview) -> drawerLayout.open()
+                getString(R.string.title_transactions) -> drawerLayout.open()
+                getString(R.string.title_profile) -> drawerLayout.open()
+                getString(R.string.title_categories) -> drawerLayout.open()
+                else -> navigateUp()
+            }
         }
-        return super.onOptionsItemSelected(item)
+        return true
     }
 
     companion object {
         const val EXTRA_OPEN_FRAGMENT = "com.wbrawner.budget.MainActivity.EXTRA_OPEN_FRAGMENT"
     }
+
+    override fun onNavigationItemSelected(item: MenuItem): Boolean {
+        when (item.itemId) {
+            MENU_ITEM_ADD_BUDGET -> findNavController(R.id.content_container).navigate(R.id.addEditBudget)
+            MENU_ITEM_SETTINGS -> findNavController(R.id.content_container).navigate(R.id.addEditBudget)
+            else -> viewModel.loadBudget(item.itemId)
+        }
+        drawerLayout.close()
+        return true
+    }
 }

android/src/main/java/com/wbrawner/budget/ui/MainViewModel.kt

@@ -0,0 +1,47 @@
+package com.wbrawner.budget.ui
+
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.wbrawner.budget.common.budget.Budget
+import com.wbrawner.budget.common.budget.BudgetRepository
+import com.wbrawner.budget.common.user.UserRepository
+import kotlinx.coroutines.launch
+import javax.inject.Inject
+
+class MainViewModel : ViewModel() {
+    @Inject
+    lateinit var budgetRepository: BudgetRepository
+
+    @Inject
+    lateinit var userRepository: UserRepository
+
+    private val budgets = MutableLiveData<BudgetList>()
+
+    fun loadBudgets(): LiveData<BudgetList> {
+        viewModelScope.launch {
+            val list = budgetRepository.findAll().sortedBy { it.name }
+            budgets.postValue(BudgetList(
+                    list,
+                    budgetRepository.currentBudget.value?.let {
+                        list.indexOf(it)
+                    }
+            ))
+        }
+        return budgets
+    }
+
+    fun loadBudget(index: Int) {
+        val list = budgets.value ?: return
+        viewModelScope.launch {
+            budgetRepository.findById(list.budgets[index].id!!, true)
+            budgets.postValue(list.copy(selectedIndex = index))
+        }
+    }
+}
+
+data class BudgetList(
+        val budgets: List<Budget>,
+        val selectedIndex: Int? = null
+)

android/src/main/res/drawable/ic_folder.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="?attr/colorControlNormal">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M10,4H4c-1.1,0 -1.99,0.9 -1.99,2L2,18c0,1.1 0.9,2 2,2h16c1.1,0 2,-0.9 2,-2V8c0,-1.1 -0.9,-2 -2,-2h-8l-2,-2z" />
+</vector>

android/src/main/res/drawable/ic_folder_open.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="?attr/colorControlNormal">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M20,6h-8l-2,-2L4,4c-1.1,0 -1.99,0.9 -1.99,2L2,18c0,1.1 0.9,2 2,2h16c1.1,0 2,-0.9 2,-2L22,8c0,-1.1 -0.9,-2 -2,-2zM20,18L4,18L4,8h16v10z" />
+</vector>

android/src/main/res/drawable/ic_folder_selectable.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_checked="true" android:drawable="@drawable/ic_folder" />
+    <item android:drawable="@drawable/ic_folder_open" />
+</selector>

android/src/main/res/drawable/ic_menu.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="?attr/colorControlNormal">
+  <path
+      android:fillColor="@android:color/white"
+      android:pathData="M3,18h18v-2L3,16v2zM3,13h18v-2L3,11v2zM3,6v2h18L21,6L3,6z"/>
+</vector>

android/src/main/res/drawable/ic_settings.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="?attr/colorControlNormal">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M19.14,12.94c0.04,-0.3 0.06,-0.61 0.06,-0.94c0,-0.32 -0.02,-0.64 -0.07,-0.94l2.03,-1.58c0.18,-0.14 0.23,-0.41 0.12,-0.61l-1.92,-3.32c-0.12,-0.22 -0.37,-0.29 -0.59,-0.22l-2.39,0.96c-0.5,-0.38 -1.03,-0.7 -1.62,-0.94L14.4,2.81c-0.04,-0.24 -0.24,-0.41 -0.48,-0.41h-3.84c-0.24,0 -0.43,0.17 -0.47,0.41L9.25,5.35C8.66,5.59 8.12,5.92 7.63,6.29L5.24,5.33c-0.22,-0.08 -0.47,0 -0.59,0.22L2.74,8.87C2.62,9.08 2.66,9.34 2.86,9.48l2.03,1.58C4.84,11.36 4.8,11.69 4.8,12s0.02,0.64 0.07,0.94l-2.03,1.58c-0.18,0.14 -0.23,0.41 -0.12,0.61l1.92,3.32c0.12,0.22 0.37,0.29 0.59,0.22l2.39,-0.96c0.5,0.38 1.03,0.7 1.62,0.94l0.36,2.54c0.05,0.24 0.24,0.41 0.48,0.41h3.84c0.24,0 0.44,-0.17 0.47,-0.41l0.36,-2.54c0.59,-0.24 1.13,-0.56 1.62,-0.94l2.39,0.96c0.22,0.08 0.47,0 0.59,-0.22l1.92,-3.32c0.12,-0.22 0.07,-0.47 -0.12,-0.61L19.14,12.94zM12,15.6c-1.98,0 -3.6,-1.62 -3.6,-3.6s1.62,-3.6 3.6,-3.6s3.6,1.62 3.6,3.6S13.98,15.6 12,15.6z" />
+</vector>

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

@@ -1,39 +1,56 @@
 <?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.drawerlayout.widget.DrawerLayout 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/drawerLayout"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
+    android:fitsSystemWindows="true"
     tools:context=".ui.MainActivity">
 
-    <androidx.appcompat.widget.Toolbar
-        android:id="@+id/action_bar"
+    <androidx.constraintlayout.widget.ConstraintLayout
         android:layout_width="match_parent"
-        android:layout_height="?attr/actionBarSize"
-        android:elevation="4dp"
-        app:layout_constraintLeft_toLeftOf="parent"
-        app:layout_constraintRight_toRightOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        android:layout_height="match_parent">
 
-    <com.google.android.material.bottomnavigation.BottomNavigationView
-        android:id="@+id/menu_main"
-        android:layout_width="0dp"
-        android:layout_height="56dp"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintLeft_toLeftOf="parent"
-        app:layout_constraintRight_toRightOf="parent"
-        app:menu="@menu/main_navigation" />
+        <androidx.appcompat.widget.Toolbar
+            android:id="@+id/action_bar"
+            android:layout_width="match_parent"
+            android:layout_height="?attr/actionBarSize"
+            android:elevation="4dp"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
 
-    <fragment
-        android:id="@+id/content_container"
-        android:name="androidx.navigation.fragment.NavHostFragment"
-        android:layout_width="match_parent"
-        android:layout_height="0dp"
-        app:defaultNavHost="true"
-        app:layout_constraintBottom_toTopOf="@+id/menu_main"
-        app:layout_constraintLeft_toLeftOf="parent"
-        app:layout_constraintRight_toRightOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/action_bar"
-        app:navGraph="@navigation/nav_graph" />
+        <com.google.android.material.bottomnavigation.BottomNavigationView
+            android:id="@+id/menu_main"
+            android:layout_width="0dp"
+            android:layout_height="56dp"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            app:menu="@menu/bottom_navigation" />
 
-</androidx.constraintlayout.widget.ConstraintLayout>
+        <fragment
+            android:id="@+id/content_container"
+            android:name="androidx.navigation.fragment.NavHostFragment"
+            android:layout_width="match_parent"
+            android:layout_height="0dp"
+            app:defaultNavHost="true"
+            app:layout_constraintBottom_toTopOf="@+id/menu_main"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/action_bar"
+            app:navGraph="@navigation/nav_graph" />
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+    <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"
+        android:paddingTop="16dp"
+        app:headerLayout="@layout/header_navigation_menu"
+        app:menu="@menu/drawer_navigation" />
+
+</androidx.drawerlayout.widget.DrawerLayout>

android/src/main/res/layout/header_navigation_menu.xml

@@ -0,0 +1,26 @@
+<?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">
+
+    <ImageView
+        android:id="@+id/twigsIcon"
+        android:layout_width="48dp"
+        android:layout_height="48dp"
+        android:scaleType="centerCrop"
+        android:src="@drawable/ic_twigs_color"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
+
+    <TextView
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:text="@string/app_name"
+        style="@style/TextAppearance.MaterialComponents.Headline6"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintBottom_toBottomOf="@+id/twigsIcon"
+        app:layout_constraintTop_toTopOf="@+id/twigsIcon"
+        app:layout_constraintStart_toEndOf="@+id/twigsIcon" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

android/src/main/res/menu/drawer_navigation.xml

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu />

android/src/main/res/values/strings.xml

@@ -59,4 +59,6 @@
     <string name="label_balance">Balance</string>
     <string name="label_remaining">Remaining</string>
     <string name="prompt_server">Server</string>
+    <string name="action_open">Open</string>
+    <string name="action_close">Close</string>
 </resources>