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<h1 class="page-title">Source: sub_menu.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 sub menus.
*
* @author volker.sorge@gmail.com (Volker Sorge)
*/
/// <reference path="abstract_menu.ts" />
var ContextMenu;
(function (ContextMenu) {
class SubMenu extends ContextMenu.AbstractMenu {
/**
* @constructor
* @extends {AbstractMenu}
* @param {Submenu} anchor The item in the parent menu triggering this
* submenu.
*/
constructor(anchor) {
super();
this.anchor = anchor;
this.variablePool = this.anchor.getMenu().getPool();
this.setBaseMenu();
}
/**
* Parses a JSON respresentation of a variable pool.
* @param {JSON} json The JSON object to parse.
* @param {Submenu} anchor The anchor item the submenu is attached to.
* @return {SubMenu} The new submenu object.
*/
static parse({ items: items, id: id }, anchor) {
let submenu = new SubMenu(anchor);
submenu.parseItems(items);
return submenu;
}
/**
* @return {Submenu} The submenu item that anchors this popdown submenu to
* its parent.
*/
getAnchor() {
return this.anchor;
}
/**
* @override
*/
post() {
if (!this.anchor.getMenu().isPosted()) {
return;
}
//// TODO: These are currently ignored!
let mobileFlag = false;
let rtlFlag = false;
let margin = 5;
let parent = this.anchor.getHtml();
let menu = this.getHtml();
let base = this.baseMenu.getFrame();
let side = 'left', mw = parent.offsetWidth;
let x = (mobileFlag ? 30 : mw - 2);
let y = 0;
while (parent && parent !== base) {
x += parent.offsetLeft;
y += parent.offsetTop;
parent = parent.parentNode;
}
if (!mobileFlag) {
if ((rtlFlag && x - mw - menu.offsetWidth > margin) ||
(!rtlFlag && x + menu.offsetWidth >
document.body.offsetWidth - margin)) {
side = 'right';
x = Math.max(margin, x - mw - menu.offsetWidth + 6);
}
}
// Is the following useful?
//
// // if (!isPC) {
// // // in case these ever get implemented
// // menu.style["borderRadiusTop"+side] = 0; // Opera 10.5
// // menu.style["WebkitBorderRadiusTop"+side] = 0; // Safari and Chrome
// // menu.style["MozBorderRadiusTop"+side] = 0; // Firefox
// // menu.style["KhtmlBorderRadiusTop"+side] = 0; // Konqueror
// // }
super.post(x, y);
}
/**
* @override
*/
display() {
this.baseMenu.getFrame().appendChild(this.getHtml());
}
/**
* Computes the topmost menu this submenu belongs to.
*/
setBaseMenu() {
//// TODO: Make this type safer!
let menu = this;
do {
menu = menu.anchor.getMenu();
} while (menu instanceof SubMenu);
this.baseMenu = menu;
}
}
ContextMenu.SubMenu = SubMenu;
})(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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