3
* Copyright(c) 2006-2010 Ext JS, Inc.
5
* http://www.extjs.com/license
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* @extends Ext.BoxComponent
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* <p>Base class for any {@link Ext.BoxComponent} that may contain other Components. Containers handle the
11
* basic behavior of containing items, namely adding, inserting and removing items.</p>
13
* <p>The most commonly used Container classes are {@link Ext.Panel}, {@link Ext.Window} and {@link Ext.TabPanel}.
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* If you do not need the capabilities offered by the aforementioned classes you can create a lightweight
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* Container to be encapsulated by an HTML element to your specifications by using the
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* <code><b>{@link Ext.Component#autoEl autoEl}</b></code> config option. This is a useful technique when creating
17
* embedded {@link Ext.layout.ColumnLayout column} layouts inside {@link Ext.form.FormPanel FormPanels}
20
* <p>The code below illustrates both how to explicitly create a Container, and how to implicitly
21
* create one using the <b><code>'container'</code></b> xtype:<pre><code>
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// explicitly create a Container
23
var embeddedColumns = new Ext.Container({
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autoEl: 'div', // This is the default
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// implicitly create Container by specifying xtype
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autoEl: 'div', // This is the default.
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// The two items below will be Ext.Containers, each encapsulated by a <DIV> element.
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fieldLabel: 'Start date'
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fieldLabel: 'End date'
52
* <p><u><b>Layout</b></u></p>
53
* <p>Container classes delegate the rendering of child Components to a layout
54
* manager class which must be configured into the Container using the
55
* <code><b>{@link #layout}</b></code> configuration property.</p>
56
* <p>When either specifying child <code>{@link #items}</code> of a Container,
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* or dynamically {@link #add adding} Components to a Container, remember to
58
* consider how you wish the Container to arrange those child elements, and
59
* whether those child elements need to be sized using one of Ext's built-in
60
* <b><code>{@link #layout}</code></b> schemes. By default, Containers use the
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* {@link Ext.layout.ContainerLayout ContainerLayout} scheme which only
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* renders child components, appending them one after the other inside the
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* Container, and <b>does not apply any sizing</b> at all.</p>
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* <p>A common mistake is when a developer neglects to specify a
65
* <b><code>{@link #layout}</code></b> (e.g. widgets like GridPanels or
66
* TreePanels are added to Containers for which no <code><b>{@link #layout}</b></code>
67
* has been specified). If a Container is left to use the default
68
* {@link Ext.layout.ContainerLayout ContainerLayout} scheme, none of its
69
* child components will be resized, or changed in any way when the Container
71
* <p>Certain layout managers allow dynamic addition of child components.
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* Those that do include {@link Ext.layout.CardLayout},
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* {@link Ext.layout.AnchorLayout}, {@link Ext.layout.FormLayout}, and
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* {@link Ext.layout.TableLayout}. For example:<pre><code>
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// Create the GridPanel.
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var myNewGrid = new Ext.grid.GridPanel({
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columns: myColumnModel,
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title: 'Results', // the title becomes the title of the tab
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myTabPanel.add(myNewGrid); // {@link Ext.TabPanel} implicitly uses {@link Ext.layout.CardLayout CardLayout}
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myTabPanel.{@link Ext.TabPanel#setActiveTab setActiveTab}(myNewGrid);
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* <p>The example above adds a newly created GridPanel to a TabPanel. Note that
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* a TabPanel uses {@link Ext.layout.CardLayout} as its layout manager which
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* means all its child items are sized to {@link Ext.layout.FitLayout fit}
88
* exactly into its client area.
89
* <p><b><u>Overnesting is a common problem</u></b>.
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* An example of overnesting occurs when a GridPanel is added to a TabPanel
91
* by wrapping the GridPanel <i>inside</i> a wrapping Panel (that has no
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* <code><b>{@link #layout}</b></code> specified) and then add that wrapping Panel
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* to the TabPanel. The point to realize is that a GridPanel <b>is</b> a
94
* Component which can be added directly to a Container. If the wrapping Panel
95
* has no <code><b>{@link #layout}</b></code> configuration, then the overnested
96
* GridPanel will not be sized as expected.<p>
98
* <p><u><b>Adding via remote configuration</b></u></p>
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* <p>A server side script can be used to add Components which are generated dynamically on the server.
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* An example of adding a GridPanel to a TabPanel where the GridPanel is generated by the server
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* based on certain parameters:
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// execute an Ajax request to invoke server side script:
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url: 'gen-invoice-grid.php',
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// send additional parameters to instruct server script
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startDate: Ext.getCmp('start-date').getValue(),
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endDate: Ext.getCmp('end-date').getValue()
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// process the response object to add it to the TabPanel:
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success: function(xhr) {
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var newComponent = eval(xhr.responseText); // see discussion below
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myTabPanel.add(newComponent); // add the component to the TabPanel
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myTabPanel.setActiveTab(newComponent);
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failure: function() {
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Ext.Msg.alert("Grid create failed", "Server communication failure");
123
* <p>The server script needs to return an executable Javascript statement which, when processed
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* using <code>eval()</code>, will return either a config object with an {@link Ext.Component#xtype xtype},
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* or an instantiated Component. The server might return this for example:</p><pre><code>
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function formatDate(value){
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return value ? value.dateFormat('M d, Y') : '';
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var store = new Ext.data.Store({
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url: 'get-invoice-data.php',
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startDate: '01/01/2008',
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endDate: '01/31/2008'
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reader: new Ext.data.JsonReader({
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record: 'transaction',
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totalRecords: 'total'
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{name: 'date', type: 'date', dateFormat: 'm/d/Y'},
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{name: 'value', type: 'float'}
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var grid = new Ext.grid.GridPanel({
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title: 'Invoice Report',
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bbar: new Ext.PagingToolbar(store),
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{header: "Customer", width: 250, dataIndex: 'customer', sortable: true},
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{header: "Invoice Number", width: 120, dataIndex: 'invNo', sortable: true},
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{header: "Invoice Date", width: 100, dataIndex: 'date', renderer: formatDate, sortable: true},
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{header: "Value", width: 120, dataIndex: 'value', renderer: 'usMoney', sortable: true}
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return grid; // return instantiated component
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* <p>When the above code fragment is passed through the <code>eval</code> function in the success handler
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* of the Ajax request, the code is executed by the Javascript processor, and the anonymous function
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* runs, and returns the instantiated grid component.</p>
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* <p>Note: since the code above is <i>generated</i> by a server script, the <code>baseParams</code> for
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* the Store, the metadata to allow generation of the Record layout, and the ColumnModel
169
* can all be generated into the code since these are all known on the server.</p>
173
Ext.Container = Ext.extend(Ext.BoxComponent, {
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* @cfg {Boolean} monitorResize
176
* True to automatically monitor window resize events to handle anything that is sensitive to the current size
177
* of the viewport. This value is typically managed by the chosen <code>{@link #layout}</code> and should not need
178
* to be set manually.
181
* @cfg {String/Object} layout
182
* <p><b>*Important</b>: In order for child items to be correctly sized and
183
* positioned, typically a layout manager <b>must</b> be specified through
184
* the <code>layout</code> configuration option.</p>
185
* <br><p>The sizing and positioning of child {@link items} is the responsibility of
186
* the Container's layout manager which creates and manages the type of layout
187
* you have in mind. For example:</p><pre><code>
189
width:300, height: 300,
190
layout: 'fit', // explicitly set layout manager: override the default (layout:'auto')
192
title: 'Panel inside a Window'
196
* <p>If the {@link #layout} configuration is not explicitly specified for
197
* a general purpose container (e.g. Container or Panel) the
198
* {@link Ext.layout.ContainerLayout default layout manager} will be used
199
* which does nothing but render child components sequentially into the
200
* Container (no sizing or positioning will be performed in this situation).
201
* Some container classes implicitly specify a default layout
202
* (e.g. FormPanel specifies <code>layout:'form'</code>). Other specific
203
* purpose classes internally specify/manage their internal layout (e.g.
204
* GridPanel, TabPanel, TreePanel, Toolbar, Menu, etc.).</p>
205
* <br><p><b><code>layout</code></b> may be specified as either as an Object or
206
* as a String:</p><div><ul class="mdetail-params">
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* <li><u>Specify as an Object</u></li>
209
* <div><ul class="mdetail-params">
210
* <li>Example usage:</li>
219
* <li><code><b>type</b></code></li>
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* <br/><p>The layout type to be used for this container. If not specified,
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* a default {@link Ext.layout.ContainerLayout} will be created and used.</p>
222
* <br/><p>Valid layout <code>type</code> values are:</p>
223
* <div class="sub-desc"><ul class="mdetail-params">
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* <li><code><b>{@link Ext.layout.AbsoluteLayout absolute}</b></code></li>
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* <li><code><b>{@link Ext.layout.AccordionLayout accordion}</b></code></li>
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* <li><code><b>{@link Ext.layout.AnchorLayout anchor}</b></code></li>
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* <li><code><b>{@link Ext.layout.ContainerLayout auto}</b></code> <b>Default</b></li>
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* <li><code><b>{@link Ext.layout.BorderLayout border}</b></code></li>
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* <li><code><b>{@link Ext.layout.CardLayout card}</b></code></li>
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* <li><code><b>{@link Ext.layout.ColumnLayout column}</b></code></li>
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* <li><code><b>{@link Ext.layout.FitLayout fit}</b></code></li>
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* <li><code><b>{@link Ext.layout.FormLayout form}</b></code></li>
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* <li><code><b>{@link Ext.layout.HBoxLayout hbox}</b></code></li>
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* <li><code><b>{@link Ext.layout.MenuLayout menu}</b></code></li>
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* <li><code><b>{@link Ext.layout.TableLayout table}</b></code></li>
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* <li><code><b>{@link Ext.layout.ToolbarLayout toolbar}</b></code></li>
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* <li><code><b>{@link Ext.layout.VBoxLayout vbox}</b></code></li>
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* <li>Layout specific configuration properties</li>
241
* <br/><p>Additional layout specific configuration properties may also be
242
* specified. For complete details regarding the valid config options for
243
* each layout type, see the layout class corresponding to the <code>type</code>
248
* <li><u>Specify as a String</u></li>
249
* <div><ul class="mdetail-params">
250
* <li>Example usage:</li>
258
* <li><code><b>layout</b></code></li>
259
* <br/><p>The layout <code>type</code> to be used for this container (see list
260
* of valid layout type values above).</p><br/>
261
* <li><code><b>{@link #layoutConfig}</b></code></li>
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* <br/><p>Additional layout specific configuration properties. For complete
263
* details regarding the valid config options for each layout type, see the
264
* layout class corresponding to the <code>layout</code> specified.</p>
265
* </ul></div></ul></div>
268
* @cfg {Object} layoutConfig
269
* This is a config object containing properties specific to the chosen
270
* <b><code>{@link #layout}</code></b> if <b><code>{@link #layout}</code></b>
271
* has been specified as a <i>string</i>.</p>
274
* @cfg {Boolean/Number} bufferResize
275
* When set to true (50 milliseconds) or a number of milliseconds, the layout assigned for this container will buffer
276
* the frequency it calculates and does a re-layout of components. This is useful for heavy containers or containers
277
* with a large quantity of sub-components for which frequent layout calls would be expensive. Defaults to <code>50</code>.
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* @cfg {String/Number} activeItem
283
* A string component id or the numeric index of the component that should be initially activated within the
284
* container's layout on render. For example, activeItem: 'item-1' or activeItem: 0 (index 0 = the first
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* item in the container's collection). activeItem only applies to layout styles that can display
286
* items one at a time (like {@link Ext.layout.AccordionLayout}, {@link Ext.layout.CardLayout} and
287
* {@link Ext.layout.FitLayout}). Related to {@link Ext.layout.ContainerLayout#activeItem}.
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* @cfg {Object/Array} items
291
* <pre><b>** IMPORTANT</b>: be sure to <b>{@link #layout specify a <code>layout</code>} if needed ! **</b></pre>
292
* <p>A single item, or an array of child Components to be added to this container,
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// specifying a single item
297
layout: 'fit', // specify a layout!
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// specifying multiple items
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items: [{...}, {...}],
301
layout: 'anchor', // specify a layout!
303
* <p>Each item may be:</p>
304
* <div><ul class="mdetail-params">
305
* <li>any type of object based on {@link Ext.Component}</li>
306
* <li>a fully instanciated object or</li>
307
* <li>an object literal that:</li>
308
* <div><ul class="mdetail-params">
309
* <li>has a specified <code>{@link Ext.Component#xtype xtype}</code></li>
310
* <li>the {@link Ext.Component#xtype} specified is associated with the Component
311
* desired and should be chosen from one of the available xtypes as listed
312
* in {@link Ext.Component}.</li>
313
* <li>If an <code>{@link Ext.Component#xtype xtype}</code> is not explicitly
314
* specified, the {@link #defaultType} for that Container is used.</li>
315
* <li>will be "lazily instanciated", avoiding the overhead of constructing a fully
316
* instanciated Component object</li>
317
* </ul></div></ul></div>
318
* <p><b>Notes</b>:</p>
319
* <div><ul class="mdetail-params">
320
* <li>Ext uses lazy rendering. Child Components will only be rendered
321
* should it become necessary. Items are automatically laid out when they are first
322
* shown (no sizing is done while hidden), or in response to a {@link #doLayout} call.</li>
323
* <li>Do not specify <code>{@link Ext.Panel#contentEl contentEl}</code>/
324
* <code>{@link Ext.Panel#html html}</code> with <code>items</code>.</li>
328
* @cfg {Object|Function} defaults
329
* <p>This option is a means of applying default settings to all added items whether added through the {@link #items}
330
* config or via the {@link #add} or {@link #insert} methods.</p>
331
* <p>If an added item is a config object, and <b>not</b> an instantiated Component, then the default properties are
332
* unconditionally applied. If the added item <b>is</b> an instantiated Component, then the default properties are
333
* applied conditionally so as not to override existing properties in the item.</p>
334
* <p>If the defaults option is specified as a function, then the function will be called using this Container as the
335
* scope (<code>this</code> reference) and passing the added item as the first parameter. Any resulting object
336
* from that call is then applied to the item as default properties.</p>
337
* <p>For example, to automatically apply padding to the body of each of a set of
338
* contained {@link Ext.Panel} items, you could pass: <code>defaults: {bodyStyle:'padding:15px'}</code>.</p>
339
* <p>Usage:</p><pre><code>
340
defaults: { // defaults are applied to items, not the container
345
xtype: 'panel', // defaults <b>do not</b> have precedence over
346
id: 'panel1', // options in config objects, so the defaults
347
autoScroll: false // will not be applied here, panel1 will be autoScroll:false
349
new Ext.Panel({ // defaults <b>do</b> have precedence over options
350
id: 'panel2', // options in components, so the defaults
351
autoScroll: false // will be applied here, panel2 will be autoScroll:true.
358
/** @cfg {Boolean} autoDestroy
359
* If true the container will automatically destroy any contained component that is removed from it, else
360
* destruction must be handled manually (defaults to true).
364
/** @cfg {Boolean} forceLayout
365
* If true the container will force a layout initially even if hidden or collapsed. This option
366
* is useful for forcing forms to render in collapsed or hidden containers. (defaults to false).
370
/** @cfg {Boolean} hideBorders
371
* True to hide the borders of each contained component, false to defer to the component's existing
372
* border settings (defaults to false).
374
/** @cfg {String} defaultType
375
* <p>The default {@link Ext.Component xtype} of child Components to create in this Container when
376
* a child item is specified as a raw configuration object, rather than as an instantiated Component.</p>
377
* <p>Defaults to <code>'panel'</code>, except {@link Ext.menu.Menu} which defaults to <code>'menuitem'</code>,
378
* and {@link Ext.Toolbar} and {@link Ext.ButtonGroup} which default to <code>'button'</code>.</p>
380
defaultType : 'panel',
382
/** @cfg {String} resizeEvent
383
* The event to listen to for resizing in layouts. Defaults to <code>'resize'</code>.
385
resizeEvent: 'resize',
388
* @cfg {Array} bubbleEvents
389
* <p>An array of events that, when fired, should be bubbled to any parent container.
390
* See {@link Ext.util.Observable#enableBubble}.
391
* Defaults to <code>['add', 'remove']</code>.
393
bubbleEvents: ['add', 'remove'],
396
initComponent : function(){
397
Ext.Container.superclass.initComponent.call(this);
402
* Fires when the components in this container are arranged by the associated layout manager.
403
* @param {Ext.Container} this
404
* @param {ContainerLayout} layout The ContainerLayout implementation for this container
409
* Fires before any {@link Ext.Component} is added or inserted into the container.
410
* A handler can return false to cancel the add.
411
* @param {Ext.Container} this
412
* @param {Ext.Component} component The component being added
413
* @param {Number} index The index at which the component will be added to the container's items collection
417
* @event beforeremove
418
* Fires before any {@link Ext.Component} is removed from the container. A handler can return
419
* false to cancel the remove.
420
* @param {Ext.Container} this
421
* @param {Ext.Component} component The component being removed
427
* Fires after any {@link Ext.Component} is added or inserted into the container.
428
* @param {Ext.Container} this
429
* @param {Ext.Component} component The component that was added
430
* @param {Number} index The index at which the component was added to the container's items collection
436
* Fires after any {@link Ext.Component} is removed from the container.
437
* @param {Ext.Container} this
438
* @param {Ext.Component} component The component that was removed
444
* The collection of components in this container as a {@link Ext.util.MixedCollection}
445
* @type MixedCollection
448
var items = this.items;
456
initItems : function(){
458
this.items = new Ext.util.MixedCollection(false, this.getComponentId);
459
this.getLayout(); // initialize the layout
464
setLayout : function(layout){
465
if(this.layout && this.layout != layout){
466
this.layout.setContainer(null);
468
this.layout = layout;
470
layout.setContainer(this);
473
afterRender: function(){
474
// Render this Container, this should be done before setLayout is called which
475
// will hook onResize
476
Ext.Container.superclass.afterRender.call(this);
478
this.layout = 'auto';
480
if(Ext.isObject(this.layout) && !this.layout.layout){
481
this.layoutConfig = this.layout;
482
this.layout = this.layoutConfig.type;
484
if(Ext.isString(this.layout)){
485
this.layout = new Ext.Container.LAYOUTS[this.layout.toLowerCase()](this.layoutConfig);
487
this.setLayout(this.layout);
489
// If a CardLayout, the active item set
490
if(this.activeItem !== undefined){
491
var item = this.activeItem;
492
delete this.activeItem;
493
this.layout.setActiveItem(item);
496
// If we have no ownerCt, render and size all children
498
this.doLayout(false, true);
501
// This is a manually configured flag set by users in conjunction with renderTo.
502
// Not to be confused with the flag by the same name used in Layouts.
503
if(this.monitorResize === true){
504
Ext.EventManager.onWindowResize(this.doLayout, this, [false]);
509
* <p>Returns the Element to be used to contain the child Components of this Container.</p>
510
* <p>An implementation is provided which returns the Container's {@link #getEl Element}, but
511
* if there is a more complex structure to a Container, this may be overridden to return
512
* the element into which the {@link #layout layout} renders child Components.</p>
513
* @return {Ext.Element} The Element to render child Components into.
515
getLayoutTarget : function(){
519
// private - used as the key lookup function for the items collection
520
getComponentId : function(comp){
521
return comp.getItemId();
525
* <p>Adds {@link Ext.Component Component}(s) to this Container.</p>
526
* <br><p><b>Description</b></u> :
527
* <div><ul class="mdetail-params">
528
* <li>Fires the {@link #beforeadd} event before adding</li>
529
* <li>The Container's {@link #defaults default config values} will be applied
530
* accordingly (see <code>{@link #defaults}</code> for details).</li>
531
* <li>Fires the {@link #add} event after the component has been added.</li>
533
* <br><p><b>Notes</b></u> :
534
* <div><ul class="mdetail-params">
535
* <li>If the Container is <i>already rendered</i> when <code>add</code>
536
* is called, you may need to call {@link #doLayout} to refresh the view which causes
537
* any unrendered child Components to be rendered. This is required so that you can
538
* <code>add</code> multiple child components if needed while only refreshing the layout
539
* once. For example:<pre><code>
540
var tb = new {@link Ext.Toolbar}();
541
tb.render(document.body); // toolbar is rendered
542
tb.add({text:'Button 1'}); // add multiple items ({@link #defaultType} for {@link Ext.Toolbar Toolbar} is 'button')
543
tb.add({text:'Button 2'});
544
tb.{@link #doLayout}(); // refresh the layout
546
* <li><i>Warning:</i> Containers directly managed by the BorderLayout layout manager
547
* may not be removed or added. See the Notes for {@link Ext.layout.BorderLayout BorderLayout}
548
* for more details.</li>
550
* @param {...Object/Array} component
551
* <p>Either one or more Components to add or an Array of Components to add. See
552
* <code>{@link #items}</code> for additional information.</p>
553
* @return {Ext.Component/Array} The Components that were added.
555
add : function(comp){
557
var args = arguments.length > 1;
558
if(args || Ext.isArray(comp)){
560
Ext.each(args ? arguments : comp, function(c){
561
result.push(this.add(c));
565
var c = this.lookupComponent(this.applyDefaults(comp));
566
var index = this.items.length;
567
if(this.fireEvent('beforeadd', this, c, index) !== false && this.onBeforeAdd(c) !== false){
570
c.onAdded(this, index);
572
this.fireEvent('add', this, c, index);
578
// Empty template method
582
onAdded : function(container, pos) {
583
//overridden here so we can cascade down, not worth creating a template method.
584
this.ownerCt = container;
586
//initialize references for child items
587
this.cascade(function(c){
590
this.fireEvent('added', this, container, pos);
594
* Inserts a Component into this Container at a specified index. Fires the
595
* {@link #beforeadd} event before inserting, then fires the {@link #add} event after the
596
* Component has been inserted.
597
* @param {Number} index The index at which the Component will be inserted
598
* into the Container's items collection
599
* @param {Ext.Component} component The child Component to insert.<br><br>
600
* Ext uses lazy rendering, and will only render the inserted Component should
601
* it become necessary.<br><br>
602
* A Component config object may be passed in order to avoid the overhead of
603
* constructing a real Component object if lazy rendering might mean that the
604
* inserted Component will not be rendered immediately. To take advantage of
605
* this 'lazy instantiation', set the {@link Ext.Component#xtype} config
606
* property to the registered type of the Component wanted.<br><br>
607
* For a list of all available xtypes, see {@link Ext.Component}.
608
* @return {Ext.Component} component The Component (or config object) that was
609
* inserted with the Container's default config values applied.
611
insert : function(index, comp){
613
var a = arguments, len = a.length;
616
for(var i = len-1; i >= 1; --i) {
617
result.push(this.insert(index, a[i]));
621
var c = this.lookupComponent(this.applyDefaults(comp));
622
index = Math.min(index, this.items.length);
623
if(this.fireEvent('beforeadd', this, c, index) !== false && this.onBeforeAdd(c) !== false){
624
if(c.ownerCt == this){
625
this.items.remove(c);
627
this.items.insert(index, c);
628
c.onAdded(this, index);
630
this.fireEvent('add', this, c, index);
636
applyDefaults : function(c){
637
var d = this.defaults;
639
if(Ext.isFunction(d)){
643
c = Ext.ComponentMgr.get(c);
655
onBeforeAdd : function(item){
657
item.ownerCt.remove(item, false);
659
if(this.hideBorders === true){
660
item.border = (item.border === true);
665
* Removes a component from this container. Fires the {@link #beforeremove} event before removing, then fires
666
* the {@link #remove} event after the component has been removed.
667
* @param {Component/String} component The component reference or id to remove.
668
* @param {Boolean} autoDestroy (optional) True to automatically invoke the removed Component's {@link Ext.Component#destroy} function.
669
* Defaults to the value of this Container's {@link #autoDestroy} config.
670
* @return {Ext.Component} component The Component that was removed.
672
remove : function(comp, autoDestroy){
674
var c = this.getComponent(comp);
675
if(c && this.fireEvent('beforeremove', this, c) !== false){
676
this.doRemove(c, autoDestroy);
677
this.fireEvent('remove', this, c);
682
onRemove: function(c){
683
// Empty template method
687
doRemove: function(c, autoDestroy){
689
hasLayout = l && this.rendered;
694
this.items.remove(c);
697
if(autoDestroy === true || (autoDestroy !== false && this.autoDestroy)){
706
* Removes all components from this container.
707
* @param {Boolean} autoDestroy (optional) True to automatically invoke the removed Component's {@link Ext.Component#destroy} function.
708
* Defaults to the value of this Container's {@link #autoDestroy} config.
709
* @return {Array} Array of the destroyed components
711
removeAll: function(autoDestroy){
713
var item, rem = [], items = [];
714
this.items.each(function(i){
717
for (var i = 0, len = rem.length; i < len; ++i){
719
this.remove(item, autoDestroy);
720
if(item.ownerCt !== this){
728
* Examines this container's <code>{@link #items}</code> <b>property</b>
729
* and gets a direct child component of this container.
730
* @param {String/Number} comp This parameter may be any of the following:
731
* <div><ul class="mdetail-params">
732
* <li>a <b><code>String</code></b> : representing the <code>{@link Ext.Component#itemId itemId}</code>
733
* or <code>{@link Ext.Component#id id}</code> of the child component </li>
734
* <li>a <b><code>Number</code></b> : representing the position of the child component
735
* within the <code>{@link #items}</code> <b>property</b></li>
737
* <p>For additional information see {@link Ext.util.MixedCollection#get}.
738
* @return Ext.Component The component (if found).
740
getComponent : function(comp){
741
if(Ext.isObject(comp)){
742
comp = comp.getItemId();
744
return this.items.get(comp);
748
lookupComponent : function(comp){
749
if(Ext.isString(comp)){
750
return Ext.ComponentMgr.get(comp);
751
}else if(!comp.events){
752
return this.createComponent(comp);
758
createComponent : function(config, defaultType){
762
// add in ownerCt at creation time but then immediately
763
// remove so that onBeforeAdd can handle it
764
var c = Ext.create(Ext.apply({
766
}, config), defaultType || this.defaultType);
767
delete c.initialConfig.ownerCt;
774
* We can only lay out if there is a view area in which to layout.
775
* display:none on the layout target, *or any of its parent elements* will mean it has no view area.
777
canLayout : function() {
778
var el = this.getVisibilityEl();
779
return el && el.dom && !el.isStyle("display", "none");
783
* Force this container's layout to be recalculated. A call to this function is required after adding a new component
784
* to an already rendered container, or possibly after changing sizing/position properties of child components.
785
* @param {Boolean} shallow (optional) True to only calc the layout of this component, and let child components auto
786
* calc layouts as required (defaults to false, which calls doLayout recursively for each subcontainer)
787
* @param {Boolean} force (optional) True to force a layout to occur, even if the item is hidden.
788
* @return {Ext.Container} this
791
doLayout : function(shallow, force){
792
var rendered = this.rendered,
793
forceLayout = force || this.forceLayout;
795
if(this.collapsed || !this.canLayout()){
796
this.deferLayout = this.deferLayout || !shallow;
800
shallow = shallow && !this.deferLayout;
802
delete this.deferLayout;
804
if(rendered && this.layout){
805
this.layout.layout();
807
if(shallow !== true && this.items){
808
var cs = this.items.items;
809
for(var i = 0, len = cs.length; i < len; i++){
812
c.doLayout(false, forceLayout);
817
this.onLayout(shallow, forceLayout);
819
// Initial layout completed
820
this.hasLayout = true;
821
delete this.forceLayout;
824
onLayout : Ext.emptyFn,
827
shouldBufferLayout: function(){
829
* Returns true if the container should buffer a layout.
830
* This is true only if the container has previously been laid out
831
* and has a parent container that is pending a layout.
833
var hl = this.hasLayout;
835
// Only ever buffer if we've laid out the first time and we have one pending.
836
return hl ? !this.hasLayoutPending() : false;
838
// Never buffer initial layout
843
hasLayoutPending: function(){
844
// Traverse hierarchy to see if any parent container has a pending layout.
846
this.ownerCt.bubble(function(c){
856
// removes css classes that were added to hide
857
Ext.Container.superclass.onShow.call(this);
858
// If we were sized during the time we were hidden, layout.
859
if(Ext.isDefined(this.deferLayout)){
860
delete this.deferLayout;
866
* Returns the layout currently in use by the container. If the container does not currently have a layout
867
* set, a default {@link Ext.layout.ContainerLayout} will be created and set as the container's layout.
868
* @return {ContainerLayout} layout The container's layout
870
getLayout : function(){
872
var layout = new Ext.layout.AutoLayout(this.layoutConfig);
873
this.setLayout(layout);
879
beforeDestroy : function(){
882
while(c = this.items.first()){
883
this.doRemove(c, true);
886
if(this.monitorResize){
887
Ext.EventManager.removeResizeListener(this.doLayout, this);
889
Ext.destroy(this.layout);
890
Ext.Container.superclass.beforeDestroy.call(this);
894
* Bubbles up the component/container heirarchy, calling the specified function with each component. The scope (<i>this</i>) of
895
* function call will be the scope provided or the current component. The arguments to the function
896
* will be the args provided or the current component. If the function returns false at any point,
897
* the bubble is stopped.
898
* @param {Function} fn The function to call
899
* @param {Object} scope (optional) The scope of the function (defaults to current node)
900
* @param {Array} args (optional) The args to call the function with (default to passing the current component)
901
* @return {Ext.Container} this
903
bubble : function(fn, scope, args){
906
if(fn.apply(scope || p, args || [p]) === false){
915
* Cascades down the component/container heirarchy from this component (called first), calling the specified function with
916
* each component. The scope (<i>this</i>) of
917
* function call will be the scope provided or the current component. The arguments to the function
918
* will be the args provided or the current component. If the function returns false at any point,
919
* the cascade is stopped on that branch.
920
* @param {Function} fn The function to call
921
* @param {Object} scope (optional) The scope of the function (defaults to current component)
922
* @param {Array} args (optional) The args to call the function with (defaults to passing the current component)
923
* @return {Ext.Container} this
925
cascade : function(fn, scope, args){
926
if(fn.apply(scope || this, args || [this]) !== false){
928
var cs = this.items.items;
929
for(var i = 0, len = cs.length; i < len; i++){
931
cs[i].cascade(fn, scope, args);
933
fn.apply(scope || cs[i], args || [cs[i]]);
942
* Find a component under this container at any level by id
944
* @return Ext.Component
946
findById : function(id){
948
this.cascade(function(c){
949
if(ct != c && c.id === id){
958
* Find a component under this container at any level by xtype or class
959
* @param {String/Class} xtype The xtype string for a component, or the class of the component directly
960
* @param {Boolean} shallow (optional) False to check whether this Component is descended from the xtype (this is
961
* the default), or true to check whether this Component is directly of the specified xtype.
962
* @return {Array} Array of Ext.Components
964
findByType : function(xtype, shallow){
965
return this.findBy(function(c){
966
return c.isXType(xtype, shallow);
971
* Find a component under this container at any level by property
972
* @param {String} prop
973
* @param {String} value
974
* @return {Array} Array of Ext.Components
976
find : function(prop, value){
977
return this.findBy(function(c){
978
return c[prop] === value;
983
* Find a component under this container at any level by a custom function. If the passed function returns
984
* true, the component will be included in the results. The passed function is called with the arguments (component, this container).
985
* @param {Function} fn The function to call
986
* @param {Object} scope (optional)
987
* @return {Array} Array of Ext.Components
989
findBy : function(fn, scope){
990
var m = [], ct = this;
991
this.cascade(function(c){
992
if(ct != c && fn.call(scope || c, c, ct) === true){
1000
* Get a component contained by this container (alias for items.get(key))
1001
* @param {String/Number} key The index or id of the component
1002
* @return {Ext.Component} Ext.Component
1004
get : function(key){
1005
return this.items.get(key);
1009
Ext.Container.LAYOUTS = {};
1010
Ext.reg('container', Ext.Container);