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<title>The source code</title>
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<pre class="prettyprint lang-js">/*!
* Ext JS Library 3.4.0
* Copyright(c) 2006-2011 Sencha Inc.
* licensing@sencha.com
* http://www.sencha.com/license
*/
<div id="cls-Ext.layout.AccordionLayout"></div>/**
* @class Ext.layout.AccordionLayout
* @extends Ext.layout.FitLayout
* <p>This is a layout that manages multiple Panels in an expandable accordion style such that only
* <b>one Panel can be expanded at any given time</b>. Each Panel has built-in support for expanding and collapsing.</p>
* <p>Note: Only Ext.Panels <b>and all subclasses of Ext.Panel</b> may be used in an accordion layout Container.</p>
* <p>This class is intended to be extended or created via the <tt><b>{@link Ext.Container#layout layout}</b></tt>
* configuration property. See <tt><b>{@link Ext.Container#layout}</b></tt> for additional details.</p>
* <p>Example usage:</p>
* <pre><code>
var accordion = new Ext.Panel({
title: 'Accordion Layout',
layout:'accordion',
defaults: {
// applied to each contained panel
bodyStyle: 'padding:15px'
},
layoutConfig: {
// layout-specific configs go here
titleCollapse: false,
animate: true,
activeOnTop: true
},
items: [{
title: 'Panel 1',
html: '<p>Panel content!</p>'
},{
title: 'Panel 2',
html: '<p>Panel content!</p>'
},{
title: 'Panel 3',
html: '<p>Panel content!</p>'
}]
});
</code></pre>
*/
Ext.layout.AccordionLayout = Ext.extend(Ext.layout.FitLayout, {
<div id="cfg-Ext.layout.AccordionLayout-fill"></div>/**
* @cfg {Boolean} fill
* True to adjust the active item's height to fill the available space in the container, false to use the
* item's current height, or auto height if not explicitly set (defaults to true).
*/
fill : true,
<div id="cfg-Ext.layout.AccordionLayout-autoWidth"></div>/**
* @cfg {Boolean} autoWidth
* True to set each contained item's width to 'auto', false to use the item's current width (defaults to true).
* Note that some components, in particular the {@link Ext.grid.GridPanel grid}, will not function properly within
* layouts if they have auto width, so in such cases this config should be set to false.
*/
autoWidth : true,
<div id="cfg-Ext.layout.AccordionLayout-titleCollapse"></div>/**
* @cfg {Boolean} titleCollapse
* True to allow expand/collapse of each contained panel by clicking anywhere on the title bar, false to allow
* expand/collapse only when the toggle tool button is clicked (defaults to true). When set to false,
* {@link #hideCollapseTool} should be false also.
*/
titleCollapse : true,
<div id="cfg-Ext.layout.AccordionLayout-hideCollapseTool"></div>/**
* @cfg {Boolean} hideCollapseTool
* True to hide the contained panels' collapse/expand toggle buttons, false to display them (defaults to false).
* When set to true, {@link #titleCollapse} should be true also.
*/
hideCollapseTool : false,
<div id="cfg-Ext.layout.AccordionLayout-collapseFirst"></div>/**
* @cfg {Boolean} collapseFirst
* True to make sure the collapse/expand toggle button always renders first (to the left of) any other tools
* in the contained panels' title bars, false to render it last (defaults to false).
*/
collapseFirst : false,
<div id="cfg-Ext.layout.AccordionLayout-animate"></div>/**
* @cfg {Boolean} animate
* True to slide the contained panels open and closed during expand/collapse using animation, false to open and
* close directly with no animation (defaults to false). Note: to defer to the specific config setting of each
* contained panel for this property, set this to undefined at the layout level.
*/
animate : false,
<div id="cfg-Ext.layout.AccordionLayout-sequence"></div>/**
* @cfg {Boolean} sequence
* <b>Experimental</b>. If animate is set to true, this will result in each animation running in sequence.
*/
sequence : false,
<div id="cfg-Ext.layout.AccordionLayout-activeOnTop"></div>/**
* @cfg {Boolean} activeOnTop
* True to swap the position of each panel as it is expanded so that it becomes the first item in the container,
* false to keep the panels in the rendered order. <b>This is NOT compatible with "animate:true"</b> (defaults to false).
*/
activeOnTop : false,
type: 'accordion',
renderItem : function(c){
if(this.animate === false){
c.animCollapse = false;
}
c.collapsible = true;
if(this.autoWidth){
c.autoWidth = true;
}
if(this.titleCollapse){
c.titleCollapse = true;
}
if(this.hideCollapseTool){
c.hideCollapseTool = true;
}
if(this.collapseFirst !== undefined){
c.collapseFirst = this.collapseFirst;
}
if(!this.activeItem && !c.collapsed){
this.setActiveItem(c, true);
}else if(this.activeItem && this.activeItem != c){
c.collapsed = true;
}
Ext.layout.AccordionLayout.superclass.renderItem.apply(this, arguments);
c.header.addClass('x-accordion-hd');
c.on('beforeexpand', this.beforeExpand, this);
},
onRemove: function(c){
Ext.layout.AccordionLayout.superclass.onRemove.call(this, c);
if(c.rendered){
c.header.removeClass('x-accordion-hd');
}
c.un('beforeexpand', this.beforeExpand, this);
},
// private
beforeExpand : function(p, anim){
var ai = this.activeItem;
if(ai){
if(this.sequence){
delete this.activeItem;
if (!ai.collapsed){
ai.collapse({callback:function(){
p.expand(anim || true);
}, scope: this});
return false;
}
}else{
ai.collapse(this.animate);
}
}
this.setActive(p);
if(this.activeOnTop){
p.el.dom.parentNode.insertBefore(p.el.dom, p.el.dom.parentNode.firstChild);
}
// Items have been hidden an possibly rearranged, we need to get the container size again.
this.layout();
},
// private
setItemSize : function(item, size){
if(this.fill && item){
var hh = 0, i, ct = this.getRenderedItems(this.container), len = ct.length, p;
// Add up all the header heights
for (i = 0; i < len; i++) {
if((p = ct[i]) != item && !p.hidden){
hh += p.header.getHeight();
}
};
// Subtract the header heights from the container size
size.height -= hh;
// Call setSize on the container to set the correct height. For Panels, deferedHeight
// will simply store this size for when the expansion is done.
item.setSize(size);
}
},
<div id="method-Ext.layout.AccordionLayout-setActiveItem"></div>/**
* Sets the active (expanded) item in the layout.
* @param {String/Number} item The string component id or numeric index of the item to activate
*/
setActiveItem : function(item){
this.setActive(item, true);
},
// private
setActive : function(item, expand){
var ai = this.activeItem;
item = this.container.getComponent(item);
if(ai != item){
if(item.rendered && item.collapsed && expand){
item.expand();
}else{
if(ai){
ai.fireEvent('deactivate', ai);
}
this.activeItem = item;
item.fireEvent('activate', item);
}
}
}
});
Ext.Container.LAYOUTS.accordion = Ext.layout.AccordionLayout;
//backwards compat
Ext.layout.Accordion = Ext.layout.AccordionLayout;</pre>
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