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<h1 class="page-title">Source: item_checkbox.js</h1>
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<pre class="prettyprint source linenums"><code>/*************************************************************
*
* Copyright (c) 2015-2016 The MathJax Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @fileoverview Class of checkbox items.
*
* @author volker.sorge@gmail.com (Volker Sorge)
*/
/// <reference path="abstract_item.ts" />
/// <reference path="menu_util.ts" />
/// <reference path="variable.ts" />
/// <reference path="variable_item.ts" />
var ContextMenu;
(function (ContextMenu) {
class Checkbox extends ContextMenu.AbstractItem {
/**
* @constructor
* @extends {AbstractItem}
* @param {Menu} menu The context menu or sub-menu the item belongs to.
* @param {string} content The content of the menu item.
* @param {string} variable The variable that is changed.
* @param {string=} id Optionally the id of the menu item.
*/
constructor(menu, content, variable, id) {
super(menu, 'checkbox', content, id);
/**
* @override
*/
this.role = 'menuitemcheckbox';
this.variable = menu.getPool().lookup(variable);
this.register();
}
/**
* Parses a JSON respresentation of a checkbox item.
* @param {JSON} json The JSON object to parse.
* @param {Menu} menu The menu the item is attached to.
* @return {Checkbox} The new checkbox object.
*/
static parse({ content: content, variable: variable, id: id }, menu) {
return new Checkbox(menu, content, variable, id);
}
/**
* @override
*/
executeAction() {
this.variable.setValue(!this.variable.getValue());
ContextMenu.MenuUtil.close(this);
}
/**
* @override
*/
generateHtml() {
super.generateHtml();
let html = this.getHtml();
this.span = document.createElement('span');
this.span.textContent = '\u2713';
this.span.classList.add(ContextMenu.HtmlClasses['MENUCHECK']);
html.appendChild(this.span);
this.update();
}
/**
* @override
*/
register() {
this.variable.register(this);
}
/**
* @override
*/
unregister() {
this.variable.unregister(this);
}
/**
* @override
*/
update() {
let disp = this.variable.getValue() ? '' : 'none';
this.span.style.display = this.variable.getValue() ? '' : 'none';
}
}
ContextMenu.Checkbox = Checkbox;
})(ContextMenu || (ContextMenu = {}));
</code></pre>
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<h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="AbstractEntry.html">AbstractEntry</a></li><li><a href="AbstractItem.html">AbstractItem</a></li><li><a href="AbstractMenu.html">AbstractMenu</a></li><li><a href="AbstractNavigatable.html">AbstractNavigatable</a></li><li><a href="AbstractPostable.html">AbstractPostable</a></li><li><a href="Checkbox.html">Checkbox</a></li><li><a href="CloseButton.html">CloseButton</a></li><li><a href="Command.html">Command</a></li><li><a href="ContextMenu.html">ContextMenu</a></li><li><a href="Info.html">Info</a></li><li><a href="Label.html">Label</a></li><li><a href="MenuElement.html">MenuElement</a></li><li><a href="MenuStore.html">MenuStore</a></li><li><a href="Popup.html">Popup</a></li><li><a href="Radio.html">Radio</a></li><li><a href="Rule.html">Rule</a></li><li><a href="SubMenu.html">SubMenu</a></li><li><a href="Submenu_.html">Submenu</a></li><li><a href="Variable.html">Variable</a></li><li><a href="VariablePool.html">VariablePool</a></li></ul><h3>Namespaces</h3><ul><li><a href="CssStyles.html">CssStyles</a></li><li><a href="MenuUtil.html">MenuUtil</a></li></ul><h3>Interfaces</h3><ul><li><a href="Element.html">Element</a></li><li><a href="Entry.html">Entry</a></li><li><a href="Item.html">Item</a></li><li><a href="KeyNavigatable.html">KeyNavigatable</a></li><li><a href="Menu.html">Menu</a></li><li><a href="MouseNavigatable.html">MouseNavigatable</a></li><li><a href="Postable.html">Postable</a></li><li><a href="TouchNavigatable.html">TouchNavigatable</a></li><li><a href="VariableItem.html">VariableItem</a></li></ul><h3>Global</h3><ul><li><a href="global.html#HtmlAttrs">HtmlAttrs</a></li><li><a href="global.html#HtmlClasses">HtmlClasses</a></li><li><a href="global.html#KEY">KEY</a></li><li><a href="global.html#MOUSE">MOUSE</a></li><li><a href="global.html#TOUCH">TOUCH</a></li></ul>
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