chrome/browser/resources/options/chromeos/change_picture_options.js

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 cr.define('options', function() {
   6   var Page = cr.ui.pageManager.Page;
   7   var PageManager = cr.ui.pageManager.PageManager;
   8   var UserImagesGrid = options.UserImagesGrid;
   9   var ButtonImages = UserImagesGrid.ButtonImages;
  10
  11   /**
  12    * Array of button URLs used on this page.
  13    * @type {Array.<string>}
  14    * @const
  15    */
  16   var ButtonImageUrls = [
  17     ButtonImages.TAKE_PHOTO,
  18     ButtonImages.CHOOSE_FILE
  19   ];
  20
  21   /////////////////////////////////////////////////////////////////////////////
  22   // ChangePictureOptions class:
  23
  24   /**
  25    * Encapsulated handling of ChromeOS change picture options page.
  26    * @constructor
  27    * @extends {cr.ui.pageManager.Page}
  28    */
  29   function ChangePictureOptions() {
  30     Page.call(this, 'changePicture',
  31               loadTimeData.getString('changePicturePage'),
  32               'change-picture-page');
  33   }
  34
  35   cr.addSingletonGetter(ChangePictureOptions);
  36
  37   ChangePictureOptions.prototype = {
  38     // Inherit ChangePictureOptions from Page.
  39     __proto__: Page.prototype,
  40
  41     /** @override */
  42     initializePage: function() {
  43       Page.prototype.initializePage.call(this);
  44
  45       var imageGrid = $('user-image-grid');
  46       UserImagesGrid.decorate(imageGrid);
  47
  48       // Preview image will track the selected item's URL.
  49       var previewElement = $('user-image-preview');
  50       previewElement.oncontextmenu = function(e) { e.preventDefault(); };
  51
  52       imageGrid.previewElement = previewElement;
  53       imageGrid.selectionType = 'default';
  54       imageGrid.flipPhotoElement = $('flip-photo');
  55
  56       imageGrid.addEventListener('select',
  57                                  this.handleImageSelected_.bind(this));
  58       imageGrid.addEventListener('activate',
  59                                  this.handleImageActivated_.bind(this));
  60       imageGrid.addEventListener('phototaken',
  61                                  this.handlePhotoTaken_.bind(this));
  62       imageGrid.addEventListener('photoupdated',
  63                                  this.handlePhotoTaken_.bind(this));
  64
  65       // Add the "Choose file" button.
  66       imageGrid.addItem(ButtonImages.CHOOSE_FILE,
  67                         loadTimeData.getString('chooseFile'),
  68                         this.handleChooseFile_.bind(this)).type = 'file';
  69
  70       // Profile image data.
  71       this.profileImage_ = imageGrid.addItem(
  72           ButtonImages.PROFILE_PICTURE,
  73           loadTimeData.getString('profilePhotoLoading'));
  74       this.profileImage_.type = 'profile';
  75
  76       // Set the title for camera item in the grid.
  77       imageGrid.setCameraTitles(
  78           loadTimeData.getString('takePhoto'),
  79           loadTimeData.getString('photoFromCamera'));
  80
  81       $('take-photo').addEventListener(
  82           'click', this.handleTakePhoto_.bind(this));
  83       $('discard-photo').addEventListener(
  84           'click', this.handleDiscardPhoto_.bind(this));
  85
  86       // Toggle 'animation' class for the duration of WebKit transition.
  87       $('flip-photo').addEventListener(
  88           'click', this.handleFlipPhoto_.bind(this));
  89       $('user-image-stream-crop').addEventListener(
  90           'webkitTransitionEnd', function(e) {
  91             previewElement.classList.remove('animation');
  92           });
  93       $('user-image-preview-img').addEventListener(
  94           'webkitTransitionEnd', function(e) {
  95             previewElement.classList.remove('animation');
  96           });
  97
  98       // Old user image data (if present).
  99       this.oldImage_ = null;
 100
 101       $('change-picture-overlay-confirm').addEventListener(
 102           'click', this.closeOverlay_.bind(this));
 103
 104       chrome.send('onChangePicturePageInitialized');
 105     },
 106
 107     /** @override */
 108     didShowPage: function() {
 109       var imageGrid = $('user-image-grid');
 110       // Reset camera element.
 111       imageGrid.cameraImage = null;
 112       imageGrid.updateAndFocus();
 113       chrome.send('onChangePicturePageShown');
 114     },
 115
 116     /** @override */
 117     willHidePage: function() {
 118       var imageGrid = $('user-image-grid');
 119       imageGrid.blur();  // Make sure the image grid is not active.
 120       imageGrid.stopCamera();
 121       if (this.oldImage_) {
 122         imageGrid.removeItem(this.oldImage_);
 123         this.oldImage_ = null;
 124       }
 125       chrome.send('onChangePicturePageHidden');
 126     },
 127
 128     /**
 129      * Either willHidePage or didClosePage may be called depending on the way
 130      * the page was closed.
 131      * @override
 132      */
 133     didClosePage: function() {
 134       this.willHidePage();
 135     },
 136
 137     /**
 138      * Closes the overlay, returning to the main settings page.
 139      * @private
 140      */
 141     closeOverlay_: function() {
 142       if (!$('change-picture-page').hidden)
 143         PageManager.closeOverlay();
 144     },
 145
 146     /**
 147      * Handle camera-photo flip.
 148      */
 149     handleFlipPhoto_: function() {
 150       var imageGrid = $('user-image-grid');
 151       imageGrid.previewElement.classList.add('animation');
 152       imageGrid.flipPhoto = !imageGrid.flipPhoto;
 153       var flipMessageId = imageGrid.flipPhoto ?
 154          'photoFlippedAccessibleText' : 'photoFlippedBackAccessibleText';
 155       announceAccessibleMessage(loadTimeData.getString(flipMessageId));
 156     },
 157
 158     /**
 159      * Handles "Take photo" button click.
 160      * @private
 161      */
 162     handleTakePhoto_: function() {
 163       $('user-image-grid').takePhoto();
 164       chrome.send('takePhoto');
 165     },
 166
 167     /**
 168      * Handle photo captured event.
 169      * @param {Event} e Event with 'dataURL' property containing a data URL.
 170      */
 171     handlePhotoTaken_: function(e) {
 172       chrome.send('photoTaken', [e.dataURL]);
 173       announceAccessibleMessage(
 174           loadTimeData.getString('photoCaptureAccessibleText'));
 175     },
 176
 177     /**
 178      * Handles "Discard photo" button click.
 179      * @private
 180      */
 181     handleDiscardPhoto_: function() {
 182       $('user-image-grid').discardPhoto();
 183       chrome.send('discardPhoto');
 184       announceAccessibleMessage(
 185           loadTimeData.getString('photoDiscardAccessibleText'));
 186     },
 187
 188     /**
 189      * Handles "Choose a file" button activation.
 190      * @private
 191      */
 192     handleChooseFile_: function() {
 193       chrome.send('chooseFile');
 194       this.closeOverlay_();
 195     },
 196
 197     /**
 198      * Handles image selection change.
 199      * @param {Event} e Selection change Event.
 200      * @private
 201      */
 202     handleImageSelected_: function(e) {
 203       var imageGrid = $('user-image-grid');
 204       var url = imageGrid.selectedItemUrl;
 205
 206       // Flip button available only for camera picture.
 207       imageGrid.flipPhotoElement.tabIndex =
 208           imageGrid.selectionType == 'camera' ? 1 : -1;
 209       // Ignore selection change caused by program itself and selection of one
 210       // of the action buttons.
 211       if (!imageGrid.inProgramSelection &&
 212           url != ButtonImages.TAKE_PHOTO && url != ButtonImages.CHOOSE_FILE) {
 213         chrome.send('selectImage', [url, imageGrid.selectionType]);
 214       }
 215       // Start/stop camera on (de)selection.
 216       if (!imageGrid.inProgramSelection &&
 217           imageGrid.selectionType != e.oldSelectionType) {
 218         if (imageGrid.selectionType == 'camera') {
 219           imageGrid.startCamera(
 220               function() {
 221                 // Start capture if camera is still the selected item.
 222                 return imageGrid.selectedItem == imageGrid.cameraImage;
 223               });
 224         } else {
 225           imageGrid.stopCamera();
 226         }
 227       }
 228       // Update image attribution text.
 229       var image = imageGrid.selectedItem;
 230       $('user-image-author-name').textContent = image.author;
 231       $('user-image-author-website').textContent = image.website;
 232       $('user-image-author-website').href = image.website;
 233       $('user-image-attribution').style.visibility =
 234           (image.author || image.website) ? 'visible' : 'hidden';
 235     },
 236
 237     /**
 238      * Handles image activation (by pressing Enter).
 239      * @private
 240      */
 241     handleImageActivated_: function() {
 242       switch ($('user-image-grid').selectedItemUrl) {
 243         case ButtonImages.TAKE_PHOTO:
 244           this.handleTakePhoto_();
 245           break;
 246         case ButtonImages.CHOOSE_FILE:
 247           this.handleChooseFile_();
 248           break;
 249         default:
 250           this.closeOverlay_();
 251           break;
 252       }
 253     },
 254
 255     /**
 256      * Adds or updates old user image taken from file/camera (neither a profile
 257      * image nor a default one).
 258      * @param {string} imageUrl Old user image, as data or internal URL.
 259      * @private
 260      */
 261     setOldImage_: function(imageUrl) {
 262       var imageGrid = $('user-image-grid');
 263       if (this.oldImage_) {
 264         this.oldImage_ = imageGrid.updateItem(this.oldImage_, imageUrl);
 265       } else {
 266         // Insert next to the profile image.
 267         var pos = imageGrid.indexOf(this.profileImage_) + 1;
 268         this.oldImage_ = imageGrid.addItem(imageUrl, undefined, undefined, pos);
 269         this.oldImage_.type = 'old';
 270         imageGrid.selectedItem = this.oldImage_;
 271       }
 272     },
 273
 274     /**
 275      * Updates user's profile image.
 276      * @param {string} imageUrl Profile image, encoded as data URL.
 277      * @param {boolean} select If true, profile image should be selected.
 278      * @private
 279      */
 280     setProfileImage_: function(imageUrl, select) {
 281       var imageGrid = $('user-image-grid');
 282       this.profileImage_ = imageGrid.updateItem(
 283           this.profileImage_, imageUrl, loadTimeData.getString('profilePhoto'));
 284       if (select)
 285         imageGrid.selectedItem = this.profileImage_;
 286     },
 287
 288     /**
 289      * Selects user image with the given URL.
 290      * @param {string} url URL of the image to select.
 291      * @private
 292      */
 293     setSelectedImage_: function(url) {
 294       $('user-image-grid').selectedItemUrl = url;
 295     },
 296
 297     /**
 298      * @param {boolean} present Whether camera is detected.
 299      */
 300     setCameraPresent_: function(present) {
 301       $('user-image-grid').cameraPresent = present;
 302     },
 303
 304     /**
 305      * Appends default images to the image grid. Should only be called once.
 306      * @param {Array.<{url: string, author: string, website: string}>}
 307      *   imagesData An array of default images data, including URL, author and
 308      *   website.
 309      * @private
 310      */
 311     setDefaultImages_: function(imagesData) {
 312       var imageGrid = $('user-image-grid');
 313       for (var i = 0, data; data = imagesData[i]; i++) {
 314         var item = imageGrid.addItem(data.url, data.title);
 315         item.type = 'default';
 316         item.author = data.author || '';
 317         item.website = data.website || '';
 318       }
 319     },
 320   };
 321
 322   // Forward public APIs to private implementations.
 323   cr.makePublic(ChangePictureOptions, [
 324     'closeOverlay',
 325     'setCameraPresent',
 326     'setDefaultImages',
 327     'setOldImage',
 328     'setProfileImage',
 329     'setSelectedImage',
 330   ]);
 331
 332   // Export
 333   return {
 334     ChangePictureOptions: ChangePictureOptions
 335   };
 336
 337 });