From 3117a046c24f52190740518eca2a5170c6e3549e Mon Sep 17 00:00:00 2001
From: Thomas Wilburn <news@thomaswilburn.net>
Date: Sun, 24 Nov 2013 20:53:55 -0500
Subject: [PATCH] Start some work on adding a pass-through messaging API.

See comments on #29
---
 config/api.json |  1 +
 js/api.js       | 19 +++++++++++++++++++
 js/command.js   |  5 +++--
 js/main.js      |  3 ++-
 4 files changed, 25 insertions(+), 3 deletions(-)
 create mode 100644 config/api.json
 create mode 100644 js/api.js

diff --git a/config/api.json b/config/api.json
new file mode 100644
index 0000000..9e26dfe
--- /dev/null
+++ b/config/api.json
@@ -0,0 +1 @@
+{}
\ No newline at end of file
diff --git a/js/api.js b/js/api.js
new file mode 100644
index 0000000..854b139
--- /dev/null
+++ b/js/api.js
@@ -0,0 +1,19 @@
+define(["command", "settings!api"], function(command, Settings) {
+  //handles sending custom messages based on Caret commands (builds, plugins, etc)
+  var targets = Settings.get("api");
+  
+  command.on("api:execute", function(id) {
+    if (!id in targets) return;
+    var config = targets[id];
+    chrome.runtime.sendMessage(config.id, config.message);
+  });
+  
+  command.on("init:restart", function() {
+    targets = Settings.get("api");
+  })
+  
+  //External apps can send messages by matching Caret's command/argument config objects
+  chrome.runtime.onMessageExternal.addListener(function(message, sender, c) {
+    command.fire(message.command, message.argument, c);
+  });
+});
\ No newline at end of file
diff --git a/js/command.js b/js/command.js
index 7bef79a..4b84635 100644
--- a/js/command.js
+++ b/js/command.js
@@ -8,11 +8,12 @@ define(["dom2"], function() {
   
   var commands = {};
   
-  var fire = function(command, argument) {
+  //commands can pass a callback, although most don't respond that way
+  var fire = function(command, argument, callback) {
     if (!commands[command]) return;
     var registry = commands[command].slice();
     registry.forEach(function(entry) {
-        entry.callback.apply(entry.scope || null, argument instanceof Array ? argument : [argument] );
+        entry.callback.apply(entry.scope || null, argument instanceof Array ? argument : [argument], callback);
     });
   }
   
diff --git a/js/main.js b/js/main.js
index 8f954c7..80e3b5e 100644
--- a/js/main.js
+++ b/js/main.js
@@ -6,7 +6,8 @@ require([
   "keys",
   "fileManager",
   "menus",
-  "palette"
+  "palette",
+  "api"
   ], function(command, Settings, dialog) {
   
   var frame = chrome.app.window.current();