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Unified Diff: chrome/browser/resources/shared/js/cr/ui/menu.js

Issue 11962043: Move webui resources from chrome\browser\resources\shared to ui\webui\resources. (Closed) Base URL: svn://chrome-svn/chrome/trunk/src/
Patch Set: Created 7 years, 11 months ago
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Index: chrome/browser/resources/shared/js/cr/ui/menu.js
===================================================================
--- chrome/browser/resources/shared/js/cr/ui/menu.js (revision 177292)
+++ chrome/browser/resources/shared/js/cr/ui/menu.js (working copy)
@@ -1,248 +0,0 @@
-// 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('cr.ui', function() {
-
- /** @const */ var MenuItem = cr.ui.MenuItem;
-
- /**
- * Creates a new menu element. Menu dispatches all commands on the element it
- * was shown for.
- *
- * @param {Object=} opt_propertyBag Optional properties.
- * @constructor
- * @extends {HTMLMenuElement}
- */
- var Menu = cr.ui.define('menu');
-
- Menu.prototype = {
- __proto__: HTMLMenuElement.prototype,
-
- selectedIndex_: -1,
-
- /**
- * Element for which menu is being shown.
- */
- contextElement: null,
-
- /**
- * Initializes the menu element.
- */
- decorate: function() {
- this.addEventListener('mouseover', this.handleMouseOver_);
- this.addEventListener('mouseout', this.handleMouseOut_);
-
- this.classList.add('decorated');
- this.setAttribute('role', 'menu');
- this.hidden = true; // Hide the menu by default.
-
- // Decorate the children as menu items.
- var children = this.children;
- for (var i = 0, child; child = children[i]; i++) {
- cr.ui.decorate(child, MenuItem);
- }
- },
-
- /**
- * Adds menu item at the end of the list.
- * @param {Object} item Menu item properties.
- * @return {cr.ui.MenuItem} The created menu item.
- */
- addMenuItem: function(item) {
- var menuItem = this.ownerDocument.createElement('menuitem');
- this.appendChild(menuItem);
-
- cr.ui.decorate(menuItem, MenuItem);
-
- if (item.label)
- menuItem.label = item.label;
-
- if (item.iconUrl)
- menuItem.iconUrl = item.iconUrl;
-
- return menuItem;
- },
-
- /**
- * Adds separator at the end of the list.
- */
- addSeparator: function() {
- var separator = this.ownerDocument.createElement('hr');
- this.appendChild(separator);
- },
-
- /**
- * Clears menu.
- */
- clear: function() {
- this.textContent = '';
- },
-
- /**
- * Walks up the ancestors of |el| until a menu item belonging to this menu
- * is found.
- * @param {Element} el The element to start searching from.
- * @return {cr.ui.MenuItem} The found menu item or null.
- * @private
- */
- findMenuItem_: function(el) {
- while (el && el.parentNode != this) {
- el = el.parentNode;
- }
- return el;
- },
-
- /**
- * Handles mouseover events and selects the hovered item.
- * @param {Event} e The mouseover event.
- * @private
- */
- handleMouseOver_: function(e) {
- var overItem = this.findMenuItem_(e.target);
- this.selectedItem = overItem;
- },
-
- /**
- * Handles mouseout events and deselects any selected item.
- * @param {Event} e The mouseout event.
- * @private
- */
- handleMouseOut_: function(e) {
- this.selectedItem = null;
- },
-
- /**
- * The selected menu item or null if none.
- * @type {cr.ui.MenuItem}
- */
- get selectedItem() {
- return this.children[this.selectedIndex];
- },
- set selectedItem(item) {
- var index = Array.prototype.indexOf.call(this.children, item);
- this.selectedIndex = index;
- },
-
- /**
- * Focuses the selected item. If selectedIndex is invalid, set it to 0
- * first.
- */
- focusSelectedItem: function() {
- if (this.selectedIndex < 0 ||
- this.selectedIndex > this.children.length) {
- this.selectedIndex = 0;
- }
-
- if (this.selectedItem)
- this.selectedItem.focus();
- },
-
- /**
- * Menu length
- */
- get length() {
- return this.children.length;
- },
-
- /**
- * This is the function that handles keyboard navigation. This is usually
- * called by the element responsible for managing the menu.
- * @param {Event} e The keydown event object.
- * @return {boolean} Whether the event was handled be the menu.
- */
- handleKeyDown: function(e) {
- var item = this.selectedItem;
-
- var self = this;
- function selectNextAvailable(m) {
- var children = self.children;
- var len = children.length;
- var i = self.selectedIndex;
- if (i == -1 && m == -1) {
- // Edge case when needed to go the last item first.
- i = 0;
- }
-
- // "i" may be negative(-1), so modulus operation and cycle below
- // wouldn't work as assumed. This trick makes startPosition positive
- // without altering it's modulo.
- var startPosition = (i + len) % len;
-
- while (true) {
- i = (i + m + len) % len;
-
- // Check not to enter into infinite loop if all items are hidden or
- // disabled.
- if (i == startPosition)
- break;
-
- item = children[i];
- if (item && !item.isSeparator() && !item.hidden && !item.disabled)
- break;
- }
- if (item && !item.disabled)
- self.selectedIndex = i;
- }
-
- switch (e.keyIdentifier) {
- case 'Down':
- selectNextAvailable(1);
- this.focusSelectedItem();
- return true;
- case 'Up':
- selectNextAvailable(-1);
- this.focusSelectedItem();
- return true;
- case 'Enter':
- case 'U+0020': // Space
- if (item) {
- var activationEvent = cr.doc.createEvent('Event');
- activationEvent.initEvent('activate', true, true);
- activationEvent.originalEvent = e;
- if (item.dispatchEvent(activationEvent)) {
- if (item.command)
- item.command.execute();
- }
- }
- return true;
- }
-
- return false;
- },
-
- /**
- * Updates menu items command according to context.
- * @param {Node=} node Node for which to actuate commands state.
- */
- updateCommands: function(node) {
- var children = this.children;
-
- for (var i = 0, child; child = children[i]; i++)
- child.updateCommand(node);
- }
- };
-
- function selectedIndexChanged(selectedIndex, oldSelectedIndex) {
- var oldSelectedItem = this.children[oldSelectedIndex];
- if (oldSelectedItem) {
- oldSelectedItem.selected = false;
- oldSelectedItem.blur();
- }
- var item = this.selectedItem;
- if (item)
- item.selected = true;
- }
-
- /**
- * The selected menu item.
- * @type {number}
- */
- cr.defineProperty(Menu, 'selectedIndex', cr.PropertyKind.JS,
- selectedIndexChanged);
-
- // Export
- return {
- Menu: Menu
- };
-});

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