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gaia/shared/js/smart-screen/connection_manager.js

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+'use strict';
+/* global evt */
+
+(function(exports) {
+  /**
+   * This class monitors incoming messages from [IAC](http://mzl.la/1TKR6zw) and
+   * fires event corresponding with incoming messages. ConnectionManager fires
+   * only `unpin` event for now.
+   *
+   * @class  ConnectionManager
+   * @fires ConnectionManager#unpin
+   */
+  var ConnectionManager = function() {};
+
+  ConnectionManager.prototype = evt({
+    _channels: undefined,
+
+    init: function cm_init(channels) {
+      var that = this;
+      this._channels = channels;
+      this._channels.forEach(function(channel) {
+        window.addEventListener(channel, that);
+      });
+    },
+
+    uninit: function cm_uninit() {
+      var that = this;
+      this._channels.forEach(function(channel) {
+        window.removeEventListener(channel, that);
+      });
+    },
+
+    // all messages should contain `type` and `data`, like this:
+    // {
+    //   type: 'unpin',
+    //   data: {
+    //     name: 'Music',
+    //     manifestURL: 'app://music.gaiamobile.org/manifest.webapp',
+    //     launchURL: 'app://music.gaiamobile.org/'
+    //   }
+    // }
+    handleEvent: function cm_handleEvent(evt) {
+      var message = evt.detail;
+      if (message && message.type) {
+        /**
+         * @event ConnectionManager#unpin
+         * @type {Object}
+         * @property {String} name - name of unpinned app
+         * @property {String} manifestURL - manifestURL of unpinned app
+         * @property {String} launchURL - launchURL of unpinned app
+         */
+        this.fire(message.type, message.data);
+      }
+    }
+  });
+
+  exports.ConnectionManager = ConnectionManager;
+}(window));