2 Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
3 This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE
4 The complete set of authors may be found at http://polymer.github.io/AUTHORS
5 The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS
6 Code distributed by Google as part of the polymer project is also
7 subject to an additional IP rights grant found at http://polymer.github.io/PATENTS
11 Use to create nested menus inside of `core-menu` elements.
13 <core-menu selected="0">
15 <core-submenu icon="settings" label="Topics">
16 <core-item label="Topic 1"></core-item>
17 <core-item label="Topic 2"></core-item>
20 <core-submenu icon="settings" label="Favorites">
21 <core-item label="Favorite 1"></core-item>
22 <core-item label="Favorite 2"></core-item>
23 <core-item label="Favorite 3"></core-item>
28 There is a margin set on the submenu to indent the items.
29 You can override the margin by doing:
31 core-submenu::shadow #submenu {
35 @group Polymer Core Elements
40 <link rel="import" href="../core-item/core-item.html">
41 <link rel="import" href="../core-menu/core-menu.html">
42 <link rel="import" href="../core-collapse/core-collapse.html">
44 <polymer-element name="core-submenu" attributes="selected selectedItem label icon src valueattr">
47 <link rel="stylesheet" href="core-submenu.css">
49 <core-item src="{{src}}" label="{{label}}" icon="{{icon}}" class="{{ {'core-selected' : active} | tokenList}}" on-tap="{{activate}}">
50 <content select=".item-content"></content>
53 <core-menu id="submenu" selected="{{selected}}" selectedItem="{{selectedItem}}" valueattr="{{valueattr}}">
57 <core-collapse target="{{$.submenu}}" opened="{{opened}}"></core-collapse>
62 Polymer('core-submenu', {
65 active: {value: false, reflect: true}
71 return this.$.submenu.items;
74 hasItems: function() {
75 return !!this.items.length;
78 unselectAllItems: function() {
79 this.$.submenu.selected = null;
80 this.$.submenu.clearSelection();
83 activeChanged: function() {
84 if (this.hasItems()) {
85 this.opened = this.active;
88 this.unselectAllItems();
93 this.opened = !this.opened;
96 activate: function() {
97 if (this.hasItems() && this.active) {
99 this.unselectAllItems();