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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
cr.define('options', function() {
var OptionsPage = options.OptionsPage;
var UserImagesGrid = options.UserImagesGrid;
/** @const */ var CUSTOM_WALLPAPER_PREFIX =
'chrome://wallpaper-thumb/custom_';
/////////////////////////////////////////////////////////////////////////////
// SetWallpaperOptions class:
/**
* Encapsulated handling of ChromeOS set wallpaper options page.
* @constructor
*/
function SetWallpaperOptions() {
OptionsPage.call(
this,
'setWallpaper',
loadTimeData.getString('setWallpaper'),
'set-wallpaper-page');
}
cr.addSingletonGetter(SetWallpaperOptions);
SetWallpaperOptions.prototype = {
// Inherit SetWallpaperOptions from OptionsPage.
__proto__: options.OptionsPage.prototype,
/**
* Initializes SetWallpaperOptions page.
*/
initializePage: function() {
// Call base class implementation to start preferences initialization.
OptionsPage.prototype.initializePage.call(this);
var wallpaperGrid = $('wallpaper-grid');
UserImagesGrid.decorate(wallpaperGrid);
wallpaperGrid.addEventListener('change',
this.handleImageSelected_.bind(this));
wallpaperGrid.addEventListener('dblclick',
this.handleImageDblClick_.bind(this));
wallpaperGrid.addEventListener('activate',
function() { OptionsPage.closeOverlay() });
$('set-wallpaper-layout').addEventListener('change',
this.handleLayoutChange_);
$('set-custom-wallpaper').onclick = this.handleChooseFile_;
$('use-random-wallpaper').onclick = this.handleCheckboxClick_.bind(this);
$('set-wallpaper-overlay-confirm').onclick = function() {
OptionsPage.closeOverlay();
};
// @type {Array.<author: string, url: string, website: string>}
this.wallpapers_ = [];
// @type {Object} Old user custom wallpaper thumbnail.
this.oldImage_ = null;
chrome.send('onSetWallpaperPageInitialized');
},
/**
* Called right after the page has been shown to user.
*/
didShowPage: function() {
$('wallpaper-grid').updateAndFocus();
// A quick hack to fix issue 118472. This is a general problem of list
// control and options overlay.
// TODO(bshe): Remove this hack when we fixed the general problem which
// tracked in issue 118829.
$('wallpaper-grid').redraw();
chrome.send('onSetWallpaperPageShown');
},
/**
* Called right before the page is hidden.
*/
willHidePage: function() {
var wallpaperGrid = $('wallpaper-grid');
wallpaperGrid.blur();
if (this.oldImage_) {
wallpaperGrid.removeItem(this.oldImage_);
this.oldImage_ = null;
}
$('set-wallpaper-layout').innerText = '';
},
/**
* Set attributions of wallpaper with given URL.
* @param {string} url URL of the selected wallpaper.
* @private
*/
setWallpaperAttribution_: function(url) {
for (var i = 0; i < this.wallpapers_.length; i++) {
if (this.wallpapers_[i].url == url) {
$('author-name').textContent = this.wallpapers_[i].author;
$('author-website').textContent = this.wallpapers_[i].website;
return;
}
}
$('author-name').textContent = '';
$('author-website').textContent = '';
},
/**
* Populates the drop down box for custom wallpaper layouts.
* param {string} layouts Available wallpaper layouts.
* param {number} selectedLayout The value of selected/default layout.
* @private
*/
populateWallpaperLayouts_: function(layouts, selectedLayout) {
var wallpaperLayout = $('set-wallpaper-layout');
var selectedIndex = -1;
for (var i = 0; i < layouts.length; i++) {
var option = new Option(layouts[i]['name'], layouts[i]['index']);
if (selectedLayout == option.value)
selectedIndex = i;
wallpaperLayout.appendChild(option);
}
if (selectedIndex >= 0)
wallpaperLayout.selectedIndex = selectedIndex;
},
/**
* Handles "Custom..." button activation.
* @private
*/
handleChooseFile_: function() {
chrome.send('chooseWallpaper');
},
/**
* Handle the wallpaper layout setting change.
* @private
*/
handleLayoutChange_: function() {
var setWallpaperLayout = $('set-wallpaper-layout');
var layout = setWallpaperLayout.options[
setWallpaperLayout.selectedIndex].value;
chrome.send('changeWallpaperLayout', [layout]);
},
/**
* Handles image selection change.
* @private
*/
handleImageSelected_: function() {
var wallpaperGrid = $('wallpaper-grid');
var url = wallpaperGrid.selectedItemUrl;
if (url &&
!wallpaperGrid.inProgramSelection) {
if (url.indexOf(CUSTOM_WALLPAPER_PREFIX) == 0) {
// User custom wallpaper is selected
this.isCustom = true;
// When users select the custom wallpaper thumbnail from picker UI,
// use the saved layout value and redraw the wallpaper.
this.handleLayoutChange_();
} else {
this.isCustom = false;
chrome.send('selectDefaultWallpaper', [url]);
}
this.setWallpaperAttribution_(url);
}
},
/**
* Handles double click on the image grid.
* @param {Event} e Double click Event.
*/
handleImageDblClick_: function(e) {
var wallpaperGrid = $('wallpaper-grid');
if (wallpaperGrid.disabled)
return;
// Close page unless the click target is the grid itself.
if (e.target instanceof HTMLImageElement)
OptionsPage.closeOverlay();
},
/**
* Handles click on the "I'm feeling lucky" checkbox.
* @private
*/
handleCheckboxClick_: function() {
var wallpaperGrid = $('wallpaper-grid');
if ($('use-random-wallpaper').checked) {
wallpaperGrid.disabled = true;
$('attribution-label').hidden = false;
chrome.send('selectRandomWallpaper');
wallpaperGrid.classList.add('grayout');
$('set-wallpaper-layout').hidden = true;
} else {
wallpaperGrid.disabled = false;
wallpaperGrid.classList.remove('grayout');
// Set the wallpaper type to User::DEFAULT.
this.handleImageSelected_();
}
},
/**
* Selects corresponding wallpaper thumbnail with the given URL and toggle
* the "I'm feeling lucky" checkbox.
* @param {string} url URL of the wallpaper thumbnail to select.
* @param {boolean} isRandom True if user checked "I'm feeling lucky"
* checkbox.
* @private
*/
setSelectedImage_: function(url, isRandom) {
var wallpaperGrid = $('wallpaper-grid');
wallpaperGrid.selectedItemUrl = url;
this.setWallpaperAttribution_(url);
if (isRandom) {
// Do not call chrome.send('selectRandomWallpaper'), it is not
// neccessary to generate a new random index here.
$('use-random-wallpaper').checked = true;
wallpaperGrid.disabled = true;
wallpaperGrid.classList.add('grayout');
}
},
/**
* Appends default images to the image grid. Should only be called once.
* @param {Array.<{author: string, url: string, website: string}>}
* wallpapers An array of wallpaper objects.
* @private
*/
setDefaultImages_: function(wallpapers) {
var wallpaperGrid = $('wallpaper-grid');
// TODO(bshe): Ideally we should save author and website with the actual
// image (URL) and not use index related storage. This way this data is
// stored in one place rather than depending on the index to be
// consistent.
for (var i = 0, wallpaper; wallpaper = wallpapers[i]; i++) {
this.wallpapers_.push(wallpaper);
wallpaperGrid.addItem(wallpaper.url);
}
},
/**
* Display layout drop down box and disable random mode if enabled. Called
* when user select a valid file from file system.
*/
didSelectFile_: function() {
$('set-wallpaper-layout').hidden = false;
var wallpaperGrid = $('wallpaper-grid');
if ($('use-random-wallpaper').checked) {
$('use-random-wallpaper').checked = false;
wallpaperGrid.disabled = false;
wallpaperGrid.classList.remove('grayout');
}
},
/**
* Returns url of current user's custom wallpaper thumbnail.
* @private
*/
currentWallpaperImageUrl_: function() {
return CUSTOM_WALLPAPER_PREFIX + BrowserOptions.getLoggedInUsername() +
'?id=' + (new Date()).getTime();
},
/**
* Updates the visibility of attribution-label and set-wallpaper-layout.
* @param {boolean} isCustom True if users select custom wallpaper.
*/
set isCustom(isCustom) {
if (isCustom) {
// Clear attributions for custom wallpaper.
$('attribution-label').hidden = true;
// Enable the layout drop down box when custom wallpaper is selected.
$('set-wallpaper-layout').hidden = false;
} else {
$('attribution-label').hidden = false;
$('set-wallpaper-layout').hidden = true;
}
},
/**
* Adds or updates custom user wallpaper thumbnail from file.
* @private
*/
setCustomImage_: function() {
var wallpaperGrid = $('wallpaper-grid');
var url = this.currentWallpaperImageUrl_();
if (this.oldImage_) {
this.oldImage_ = wallpaperGrid.updateItem(this.oldImage_, url);
} else {
// Insert to the end of wallpaper list.
var pos = wallpaperGrid.length;
this.oldImage_ = wallpaperGrid.addItem(url, undefined, undefined, pos);
}
this.isCustom = true;
this.setWallpaperAttribution_('');
wallpaperGrid.selectedItem = this.oldImage_;
},
};
// Forward public APIs to private implementations.
[
'setDefaultImages',
'setSelectedImage',
'populateWallpaperLayouts',
'didSelectFile',
'setCustomImage'
].forEach(function(name) {
SetWallpaperOptions[name] = function() {
var instance = SetWallpaperOptions.getInstance();
return instance[name + '_'].apply(instance, arguments);
};
});
// Export
return {
SetWallpaperOptions: SetWallpaperOptions
};
});
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