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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() {
/** @const */ var ArrayDataModel = cr.ui.ArrayDataModel;
/** @const */ var Grid = cr.ui.Grid;
/** @const */ var GridItem = cr.ui.GridItem;
/** @const */ var GridSelectionController = cr.ui.GridSelectionController;
/** @const */ var ListSingleSelectionModel = cr.ui.ListSingleSelectionModel;
/**
* Creates a new user images grid item.
* @param {{url: string, title: string=, decorateFn: function=,
* clickHandler: function=}} imageInfo User image URL, optional title,
* decorator callback and click handler.
* @constructor
* @extends {cr.ui.GridItem}
*/
function UserImagesGridItem(imageInfo) {
var el = new GridItem(imageInfo);
el.__proto__ = UserImagesGridItem.prototype;
return el;
}
UserImagesGridItem.prototype = {
__proto__: GridItem.prototype,
/** @inheritDoc */
decorate: function() {
GridItem.prototype.decorate.call(this);
var imageEl = cr.doc.createElement('img');
imageEl.src = this.dataItem.url;
imageEl.title = this.dataItem.title || '';
var label = imageEl.src.replace(/(.*\/|\.png)/g, '');
imageEl.setAttribute('aria-label', label.replace(/_/g, ' '));
if (typeof this.dataItem.clickHandler == 'function')
imageEl.addEventListener('click', this.dataItem.clickHandler);
// Remove any garbage added by GridItem and ListItem decorators.
this.textContent = '';
this.appendChild(imageEl);
if (typeof this.dataItem.decorateFn == 'function')
this.dataItem.decorateFn(this);
}
};
/**
* Creates a selection controller that wraps selection on grid ends
* and translates Enter presses into 'activate' events.
* @param {cr.ui.ListSelectionModel} selectionModel The selection model to
* interact with.
* @param {cr.ui.Grid} grid The grid to interact with.
* @constructor
* @extends {cr.ui.GridSelectionController}
*/
function UserImagesGridSelectionController(selectionModel, grid) {
GridSelectionController.call(this, selectionModel, grid);
}
UserImagesGridSelectionController.prototype = {
__proto__: GridSelectionController.prototype,
/** @inheritDoc */
getIndexBefore: function(index) {
var result =
GridSelectionController.prototype.getIndexBefore.call(this, index);
return result == -1 ? this.getLastIndex() : result;
},
/** @inheritDoc */
getIndexAfter: function(index) {
var result =
GridSelectionController.prototype.getIndexAfter.call(this, index);
return result == -1 ? this.getFirstIndex() : result;
},
/** @inheritDoc */
handleKeyDown: function(e) {
if (e.keyIdentifier == 'Enter')
cr.dispatchSimpleEvent(this.grid_, 'activate');
else
GridSelectionController.prototype.handleKeyDown.call(this, e);
},
};
/**
* Creates a new user images grid element.
* @param {Object=} opt_propertyBag Optional properties.
* @constructor
* @extends {cr.ui.Grid}
*/
var UserImagesGrid = cr.ui.define('grid');
UserImagesGrid.prototype = {
__proto__: Grid.prototype,
/** @inheritDoc */
createSelectionController: function(sm) {
return new UserImagesGridSelectionController(sm, this);
},
/** @inheritDoc */
decorate: function() {
Grid.prototype.decorate.call(this);
this.dataModel = new ArrayDataModel([]);
this.itemConstructor = UserImagesGridItem;
this.selectionModel = new ListSingleSelectionModel();
this.inProgramSelection_ = false;
},
/**
* Should only be queried from the 'change' event listener, true if the
* change event was triggered by a programmatical selection change.
* @type {boolean}
*/
get inProgramSelection() {
return this.inProgramSelection_;
},
/**
* URL of the image selected.
* @type {string?}
*/
get selectedItemUrl() {
var selectedItem = this.selectedItem;
return selectedItem ? selectedItem.url : null;
},
set selectedItemUrl(url) {
for (var i = 0, el; el = this.dataModel.item(i); i++) {
if (el.url === url)
this.selectedItemIndex = i;
}
},
/**
* Set index to the image selected.
* @type {number} index The index of selected image.
*/
set selectedItemIndex(index) {
this.inProgramSelection_ = true;
this.selectionModel.selectedIndex = index;
this.inProgramSelection_ = false;
},
/** @inheritDoc */
get selectedItem() {
var index = this.selectionModel.selectedIndex;
return index != -1 ? this.dataModel.item(index) : null;
},
set selectedItem(selectedItem) {
var index = this.indexOf(selectedItem);
this.inProgramSelection_ = true;
this.selectionModel.selectedIndex = index;
this.selectionModel.leadIndex = index;
this.inProgramSelection_ = false;
},
/**
* Adds new image to the user image grid.
* @param {string} src Image URL.
* @param {string=} opt_title Image tooltip.
* @param {function=} opt_clickHandler Image click handler.
* @param {number=} opt_position If given, inserts new image into
* that position (0-based) in image list.
* @param {function=} opt_decorateFn Function called with the list element
* as argument to do any final decoration.
* @return {!Object} Image data inserted into the data model.
*/
// TODO(ivankr): this function needs some argument list refactoring.
addItem: function(url, opt_title, opt_clickHandler, opt_position,
opt_decorateFn) {
var imageInfo = {
url: url,
title: opt_title,
clickHandler: opt_clickHandler,
decorateFn: opt_decorateFn
};
this.inProgramSelection_ = true;
if (opt_position !== undefined)
this.dataModel.splice(opt_position, 0, imageInfo);
else
this.dataModel.push(imageInfo);
this.inProgramSelection_ = false;
return imageInfo;
},
/**
* Returns index of an image in grid.
* @param {Object} imageInfo Image data returned from addItem() call.
* @return {number} Image index (0-based) or -1 if image was not found.
*/
indexOf: function(imageInfo) {
return this.dataModel.indexOf(imageInfo);
},
/**
* Replaces an image in the grid.
* @param {Object} imageInfo Image data returned from addItem() call.
* @param {string} imageUrl New image URL.
* @param {string=} opt_title New image tooltip (if undefined, tooltip
* is left unchanged).
* @return {!Object} Image data of the added or updated image.
*/
updateItem: function(imageInfo, imageUrl, opt_title) {
var imageIndex = this.indexOf(imageInfo);
var wasSelected = this.selectionModel.selectedIndex == imageIndex;
this.removeItem(imageInfo);
var newInfo = this.addItem(
imageUrl,
opt_title === undefined ? imageInfo.title : opt_title,
imageInfo.clickHandler,
imageIndex,
imageInfo.decorateFn);
if (wasSelected)
this.selectedItem = newInfo;
return newInfo;
},
/**
* Removes previously added image from the grid.
* @param {Object} imageInfo Image data returned from the addItem() call.
*/
removeItem: function(imageInfo) {
var index = this.indexOf(imageInfo);
if (index != -1) {
this.inProgramSelection_ = true;
this.dataModel.splice(index, 1);
this.inProgramSelection_ = false;
}
},
/**
* Forces re-display, size re-calculation and focuses grid.
*/
updateAndFocus: function() {
// Recalculate the measured item size.
this.measured_ = null;
this.columns = 0;
this.redraw();
this.focus();
}
};
/**
* URLs of special button images.
* @enum {string}
*/
UserImagesGrid.ButtonImages = {
TAKE_PHOTO: 'chrome://theme/IDR_BUTTON_USER_IMAGE_TAKE_PHOTO',
CHOOSE_FILE: 'chrome://theme/IDR_BUTTON_USER_IMAGE_CHOOSE_FILE',
PROFILE_PICTURE: 'chrome://theme/IDR_PROFILE_PICTURE_LOADING'
};
return {
UserImagesGrid: UserImagesGrid
};
});
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