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gaia/apps/camera/js/controllers/confirm.js

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+define(function(require, exports, module) {
+/*jshint laxbreak:true*/
+
+'use strict';
+
+/**
+ * Module Dependencies
+ */
+
+var prepareBlob = require('lib/prepare-preview-blob');
+var debug = require('debug')('controller:confirm');
+var ConfirmView = require('views/confirm');
+var bindAll = require('lib/bind-all');
+
+/**
+ * Exports
+ */
+
+module.exports = function(options) { return new ConfirmController(options); };
+module.exports.ConfirmController = ConfirmController;
+
+/**
+ * Initialize a new `ConfirmController`
+ *
+ * @param {Object} options
+ */
+function ConfirmController(app) {
+  this.app = app;
+  this.settings = app.settings;
+  this.activity = app.activity;
+  this.camera = app.camera;
+  this.container = app.el;
+
+  // Allow these dependencies
+  // to be injected if need be.
+  this.ConfirmView = app.ConfirmView || ConfirmView;
+  this.prepareBlob = app.prepareBlob || prepareBlob;
+
+  bindAll(this);
+  this.bindEvents();
+  debug('initialized');
+}
+
+ConfirmController.prototype.renderView = function() {
+  if (!this.activity.pick) { return; }
+
+  if (!this.view) {
+    this.view = new this.ConfirmView();
+    this.view.maxPreviewSize = window.CONFIG_MAX_IMAGE_PIXEL_SIZE;
+    this.view.render().appendTo(this.container);
+
+    // We want to listen to select events exactly once
+    // The media is selected, the confirm view dismissed
+    // and the activity returns
+    this.view.once('click:select', this.onSelectMedia);
+    this.view.on('click:retake', this.onRetakeMedia);
+    this.view.on('loadingvideo', this.app.firer('busy'));
+    this.view.on('playingvideo', this.app.firer('ready'));
+  }
+
+  this.view.show();
+  this.app.set('confirmViewVisible', true);
+};
+
+/**
+ * Bind callbacks to required events.
+ *
+ */
+ConfirmController.prototype.bindEvents = function() {
+
+  // Render/Show the view on the `newimage` and `newvideo` events
+  // since they are fired immediately when tapping 'Capture'/'Stop'.
+  // This prevents the 'Capture'/'Stop' button from being able to be
+  // triggered multiple times before the confirm view appears.
+  this.camera.on('newimage', this.renderView);
+  this.camera.on('change:recording', this.onRecordingChange);
+
+  // Update the MediaFrame contents with the image/video upon
+  // receiving the `newmedia` event. This event is slightly delayed
+  // since it waits for the storage callback to complete.
+  this.app.on('newmedia', this.onNewMedia);
+};
+
+ConfirmController.prototype.onRecordingChange = function(recording) {
+  if (!this.activity.pick) { return; }
+
+  if (recording === 'starting') {
+    this.recording = true;
+  } else if (recording === 'error') {
+    this.recording = false;
+  } else if (recording === 'stopped' && this.recording) {
+    this.renderView();
+  }
+};
+
+/**
+ * When inside a 'pick' activity
+ * will present the user with a
+ * confirm overlay where they can
+ * decide to 'select' or 'retake'
+ * the photo or video
+ *
+ * @param  {Object} data
+ *
+ */
+ConfirmController.prototype.onNewMedia = function(newMedia) {
+  if (!this.activity.pick) { return; }
+
+  this.newMedia = newMedia;
+  if (newMedia.isVideo) { // Is video
+    this.view.showVideo(newMedia);
+  } else { // Is Image
+    this.prepareBlob(this.newMedia.blob, this.view.showImage);
+  }
+};
+
+ConfirmController.prototype.onSelectMedia = function() {
+  this.app.emit('confirm:selected', this.newMedia);
+};
+
+ConfirmController.prototype.onRetakeMedia = function() {
+  this.view.hide();
+  this.view.clearMediaFrame();
+  this.app.set('confirmViewVisible', false);
+};
+
+});