3 * Copyright(c) 2006-2010 Ext JS, LLC
5 * http://www.extjs.com/license
9 * @extends Ext.BoxComponent
10 * <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}.
14 * If you do not need the capabilities offered by the aforementioned classes you can create a lightweight
15 * Container to be encapsulated by an HTML element to your specifications by using the
16 * <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>
22 // explicitly create a Container
23 var embeddedColumns = new Ext.Container({
24 autoEl: 'div', // This is the default
27 // implicitly create Container by specifying xtype
29 autoEl: 'div', // This is the default.
36 // The two items below will be Ext.Containers, each encapsulated by a <DIV> element.
41 fieldLabel: 'Start date'
47 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,
57 * 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
61 * {@link Ext.layout.ContainerLayout ContainerLayout} scheme which only
62 * renders child components, appending them one after the other inside the
63 * Container, and <b>does not apply any sizing</b> at all.</p>
64 * <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.
72 * Those that do include {@link Ext.layout.CardLayout},
73 * {@link Ext.layout.AnchorLayout}, {@link Ext.layout.FormLayout}, and
74 * {@link Ext.layout.TableLayout}. For example:<pre><code>
75 // Create the GridPanel.
76 var myNewGrid = new Ext.grid.GridPanel({
78 columns: myColumnModel,
79 title: 'Results', // the title becomes the title of the tab
82 myTabPanel.add(myNewGrid); // {@link Ext.TabPanel} implicitly uses {@link Ext.layout.CardLayout CardLayout}
83 myTabPanel.{@link Ext.TabPanel#setActiveTab setActiveTab}(myNewGrid);
85 * <p>The example above adds a newly created GridPanel to a TabPanel. Note that
86 * a TabPanel uses {@link Ext.layout.CardLayout} as its layout manager which
87 * 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>.
90 * 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
92 * <code><b>{@link #layout}</b></code> specified) and then add that wrapping Panel
93 * 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>
100 * <p>A server side script can be used to add Components which are generated dynamically on the server.
101 * An example of adding a GridPanel to a TabPanel where the GridPanel is generated by the server
102 * based on certain parameters:
104 // execute an Ajax request to invoke server side script:
106 url: 'gen-invoice-grid.php',
107 // send additional parameters to instruct server script
109 startDate: Ext.getCmp('start-date').getValue(),
110 endDate: Ext.getCmp('end-date').getValue()
112 // process the response object to add it to the TabPanel:
113 success: function(xhr) {
114 var newComponent = eval(xhr.responseText); // see discussion below
115 myTabPanel.add(newComponent); // add the component to the TabPanel
116 myTabPanel.setActiveTab(newComponent);
118 failure: function() {
119 Ext.Msg.alert("Grid create failed", "Server communication failure");
123 * <p>The server script needs to return an executable Javascript statement which, when processed
124 * using <code>eval()</code>, will return either a config object with an {@link Ext.Component#xtype xtype},
125 * or an instantiated Component. The server might return this for example:</p><pre><code>
127 function formatDate(value){
128 return value ? value.dateFormat('M d, Y') : '';
131 var store = new Ext.data.Store({
132 url: 'get-invoice-data.php',
134 startDate: '01/01/2008',
135 endDate: '01/31/2008'
137 reader: new Ext.data.JsonReader({
138 record: 'transaction',
140 totalRecords: 'total'
144 {name: 'date', type: 'date', dateFormat: 'm/d/Y'},
145 {name: 'value', type: 'float'}
149 var grid = new Ext.grid.GridPanel({
150 title: 'Invoice Report',
151 bbar: new Ext.PagingToolbar(store),
154 {header: "Customer", width: 250, dataIndex: 'customer', sortable: true},
155 {header: "Invoice Number", width: 120, dataIndex: 'invNo', sortable: true},
156 {header: "Invoice Date", width: 100, dataIndex: 'date', renderer: formatDate, sortable: true},
157 {header: "Value", width: 120, dataIndex: 'value', renderer: 'usMoney', sortable: true}
161 return grid; // return instantiated component
164 * <p>When the above code fragment is passed through the <code>eval</code> function in the success handler
165 * of the Ajax request, the code is executed by the Javascript processor, and the anonymous function
166 * runs, and returns the instantiated grid component.</p>
167 * <p>Note: since the code above is <i>generated</i> by a server script, the <code>baseParams</code> for
168 * 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, {
175 * @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">
208 * <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>
220 * <br/><p>The layout type to be used for this container. If not specified,
221 * 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">
224 * <li><code><b>{@link Ext.layout.AbsoluteLayout absolute}</b></code></li>
225 * <li><code><b>{@link Ext.layout.AccordionLayout accordion}</b></code></li>
226 * <li><code><b>{@link Ext.layout.AnchorLayout anchor}</b></code></li>
227 * <li><code><b>{@link Ext.layout.ContainerLayout auto}</b></code> <b>Default</b></li>
228 * <li><code><b>{@link Ext.layout.BorderLayout border}</b></code></li>
229 * <li><code><b>{@link Ext.layout.CardLayout card}</b></code></li>
230 * <li><code><b>{@link Ext.layout.ColumnLayout column}</b></code></li>
231 * <li><code><b>{@link Ext.layout.FitLayout fit}</b></code></li>
232 * <li><code><b>{@link Ext.layout.FormLayout form}</b></code></li>
233 * <li><code><b>{@link Ext.layout.HBoxLayout hbox}</b></code></li>
234 * <li><code><b>{@link Ext.layout.MenuLayout menu}</b></code></li>
235 * <li><code><b>{@link Ext.layout.TableLayout table}</b></code></li>
236 * <li><code><b>{@link Ext.layout.ToolbarLayout toolbar}</b></code></li>
237 * <li><code><b>{@link Ext.layout.VBoxLayout vbox}</b></code></li>
240 * <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>
262 * <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>.
279 // Deprecated - will be removed in 3.2.x
283 * @cfg {String/Number} activeItem
284 * A string component id or the numeric index of the component that should be initially activated within the
285 * container's layout on render. For example, activeItem: 'item-1' or activeItem: 0 (index 0 = the first
286 * item in the container's collection). activeItem only applies to layout styles that can display
287 * items one at a time (like {@link Ext.layout.AccordionLayout}, {@link Ext.layout.CardLayout} and
288 * {@link Ext.layout.FitLayout}). Related to {@link Ext.layout.ContainerLayout#activeItem}.
291 * @cfg {Object/Array} items
292 * <pre><b>** IMPORTANT</b>: be sure to <b>{@link #layout specify a <code>layout</code>} if needed ! **</b></pre>
293 * <p>A single item, or an array of child Components to be added to this container,
296 // specifying a single item
298 layout: 'fit', // specify a layout!
300 // specifying multiple items
301 items: [{...}, {...}],
302 layout: 'anchor', // specify a layout!
304 * <p>Each item may be:</p>
305 * <div><ul class="mdetail-params">
306 * <li>any type of object based on {@link Ext.Component}</li>
307 * <li>a fully instanciated object or</li>
308 * <li>an object literal that:</li>
309 * <div><ul class="mdetail-params">
310 * <li>has a specified <code>{@link Ext.Component#xtype xtype}</code></li>
311 * <li>the {@link Ext.Component#xtype} specified is associated with the Component
312 * desired and should be chosen from one of the available xtypes as listed
313 * in {@link Ext.Component}.</li>
314 * <li>If an <code>{@link Ext.Component#xtype xtype}</code> is not explicitly
315 * specified, the {@link #defaultType} for that Container is used.</li>
316 * <li>will be "lazily instanciated", avoiding the overhead of constructing a fully
317 * instanciated Component object</li>
318 * </ul></div></ul></div>
319 * <p><b>Notes</b>:</p>
320 * <div><ul class="mdetail-params">
321 * <li>Ext uses lazy rendering. Child Components will only be rendered
322 * should it become necessary. Items are automatically laid out when they are first
323 * shown (no sizing is done while hidden), or in response to a {@link #doLayout} call.</li>
324 * <li>Do not specify <code>{@link Ext.Panel#contentEl contentEl}</code>/
325 * <code>{@link Ext.Panel#html html}</code> with <code>items</code>.</li>
329 * @cfg {Object|Function} defaults
330 * <p>This option is a means of applying default settings to all added items whether added through the {@link #items}
331 * config or via the {@link #add} or {@link #insert} methods.</p>
332 * <p>If an added item is a config object, and <b>not</b> an instantiated Component, then the default properties are
333 * unconditionally applied. If the added item <b>is</b> an instantiated Component, then the default properties are
334 * applied conditionally so as not to override existing properties in the item.</p>
335 * <p>If the defaults option is specified as a function, then the function will be called using this Container as the
336 * scope (<code>this</code> reference) and passing the added item as the first parameter. Any resulting object
337 * from that call is then applied to the item as default properties.</p>
338 * <p>For example, to automatically apply padding to the body of each of a set of
339 * contained {@link Ext.Panel} items, you could pass: <code>defaults: {bodyStyle:'padding:15px'}</code>.</p>
340 * <p>Usage:</p><pre><code>
341 defaults: { // defaults are applied to items, not the container
346 xtype: 'panel', // defaults <b>do not</b> have precedence over
347 id: 'panel1', // options in config objects, so the defaults
348 autoScroll: false // will not be applied here, panel1 will be autoScroll:false
350 new Ext.Panel({ // defaults <b>do</b> have precedence over options
351 id: 'panel2', // options in components, so the defaults
352 autoScroll: false // will be applied here, panel2 will be autoScroll:true.
359 /** @cfg {Boolean} autoDestroy
360 * If true the container will automatically destroy any contained component that is removed from it, else
361 * destruction must be handled manually (defaults to true).
365 /** @cfg {Boolean} forceLayout
366 * If true the container will force a layout initially even if hidden or collapsed. This option
367 * is useful for forcing forms to render in collapsed or hidden containers. (defaults to false).
371 /** @cfg {Boolean} hideBorders
372 * True to hide the borders of each contained component, false to defer to the component's existing
373 * border settings (defaults to false).
375 /** @cfg {String} defaultType
376 * <p>The default {@link Ext.Component xtype} of child Components to create in this Container when
377 * a child item is specified as a raw configuration object, rather than as an instantiated Component.</p>
378 * <p>Defaults to <code>'panel'</code>, except {@link Ext.menu.Menu} which defaults to <code>'menuitem'</code>,
379 * and {@link Ext.Toolbar} and {@link Ext.ButtonGroup} which default to <code>'button'</code>.</p>
381 defaultType : 'panel',
383 /** @cfg {String} resizeEvent
384 * The event to listen to for resizing in layouts. Defaults to <code>'resize'</code>.
386 resizeEvent: 'resize',
389 * @cfg {Array} bubbleEvents
390 * <p>An array of events that, when fired, should be bubbled to any parent container.
391 * See {@link Ext.util.Observable#enableBubble}.
392 * Defaults to <code>['add', 'remove']</code>.
394 bubbleEvents: ['add', 'remove'],
397 initComponent : function(){
398 Ext.Container.superclass.initComponent.call(this);
403 * Fires when the components in this container are arranged by the associated layout manager.
404 * @param {Ext.Container} this
405 * @param {ContainerLayout} layout The ContainerLayout implementation for this container
410 * Fires before any {@link Ext.Component} is added or inserted into the container.
411 * A handler can return false to cancel the add.
412 * @param {Ext.Container} this
413 * @param {Ext.Component} component The component being added
414 * @param {Number} index The index at which the component will be added to the container's items collection
418 * @event beforeremove
419 * Fires before any {@link Ext.Component} is removed from the container. A handler can return
420 * false to cancel the remove.
421 * @param {Ext.Container} this
422 * @param {Ext.Component} component The component being removed
428 * Fires after any {@link Ext.Component} is added or inserted into the container.
429 * @param {Ext.Container} this
430 * @param {Ext.Component} component The component that was added
431 * @param {Number} index The index at which the component was added to the container's items collection
437 * Fires after any {@link Ext.Component} is removed from the container.
438 * @param {Ext.Container} this
439 * @param {Ext.Component} component The component that was removed
444 this.enableBubble(this.bubbleEvents);
447 * The collection of components in this container as a {@link Ext.util.MixedCollection}
448 * @type MixedCollection
451 var items = this.items;
459 initItems : function(){
461 this.items = new Ext.util.MixedCollection(false, this.getComponentId);
462 this.getLayout(); // initialize the layout
467 setLayout : function(layout){
468 if(this.layout && this.layout != layout){
469 this.layout.setContainer(null);
472 this.layout = layout;
473 layout.setContainer(this);
476 afterRender: function(){
477 // Render this Container, this should be done before setLayout is called which
478 // will hook onResize
479 Ext.Container.superclass.afterRender.call(this);
481 this.layout = 'auto';
483 if(Ext.isObject(this.layout) && !this.layout.layout){
484 this.layoutConfig = this.layout;
485 this.layout = this.layoutConfig.type;
487 if(Ext.isString(this.layout)){
488 this.layout = new Ext.Container.LAYOUTS[this.layout.toLowerCase()](this.layoutConfig);
490 this.setLayout(this.layout);
492 // If a CardLayout, the active item set
493 if(this.activeItem !== undefined){
494 var item = this.activeItem;
495 delete this.activeItem;
496 this.layout.setActiveItem(item);
499 // If we have no ownerCt, render and size all children
501 this.doLayout(false, true);
504 // This is a manually configured flag set by users in conjunction with renderTo.
505 // Not to be confused with the flag by the same name used in Layouts.
506 if(this.monitorResize === true){
507 Ext.EventManager.onWindowResize(this.doLayout, this, [false]);
512 * <p>Returns the Element to be used to contain the child Components of this Container.</p>
513 * <p>An implementation is provided which returns the Container's {@link #getEl Element}, but
514 * if there is a more complex structure to a Container, this may be overridden to return
515 * the element into which the {@link #layout layout} renders child Components.</p>
516 * @return {Ext.Element} The Element to render child Components into.
518 getLayoutTarget : function(){
522 // private - used as the key lookup function for the items collection
523 getComponentId : function(comp){
524 return comp.getItemId();
528 * <p>Adds {@link Ext.Component Component}(s) to this Container.</p>
529 * <br><p><b>Description</b></u> :
530 * <div><ul class="mdetail-params">
531 * <li>Fires the {@link #beforeadd} event before adding</li>
532 * <li>The Container's {@link #defaults default config values} will be applied
533 * accordingly (see <code>{@link #defaults}</code> for details).</li>
534 * <li>Fires the {@link #add} event after the component has been added.</li>
536 * <br><p><b>Notes</b></u> :
537 * <div><ul class="mdetail-params">
538 * <li>If the Container is <i>already rendered</i> when <code>add</code>
539 * is called, you may need to call {@link #doLayout} to refresh the view which causes
540 * any unrendered child Components to be rendered. This is required so that you can
541 * <code>add</code> multiple child components if needed while only refreshing the layout
542 * once. For example:<pre><code>
543 var tb = new {@link Ext.Toolbar}();
544 tb.render(document.body); // toolbar is rendered
545 tb.add({text:'Button 1'}); // add multiple items ({@link #defaultType} for {@link Ext.Toolbar Toolbar} is 'button')
546 tb.add({text:'Button 2'});
547 tb.{@link #doLayout}(); // refresh the layout
549 * <li><i>Warning:</i> Containers directly managed by the BorderLayout layout manager
550 * may not be removed or added. See the Notes for {@link Ext.layout.BorderLayout BorderLayout}
551 * for more details.</li>
553 * @param {Object/Array} component
554 * <p>Either a single component or an Array of components to add. See
555 * <code>{@link #items}</code> for additional information.</p>
556 * @param {Object} (Optional) component_2
557 * @param {Object} (Optional) component_n
558 * @return {Ext.Component} component The Component (or config object) that was added.
560 add : function(comp){
562 var args = arguments.length > 1;
563 if(args || Ext.isArray(comp)){
565 Ext.each(args ? arguments : comp, function(c){
566 result.push(this.add(c));
570 var c = this.lookupComponent(this.applyDefaults(comp));
571 var index = this.items.length;
572 if(this.fireEvent('beforeadd', this, c, index) !== false && this.onBeforeAdd(c) !== false){
575 c.onAdded(this, index);
577 this.fireEvent('add', this, c, index);
583 // Empty template method
587 onAdded : function(container, pos) {
588 //overridden here so we can cascade down, not worth creating a template method.
589 this.ownerCt = container;
591 //initialize references for child items
592 this.cascade(function(c){
595 this.fireEvent('added', this, container, pos);
599 * Inserts a Component into this Container at a specified index. Fires the
600 * {@link #beforeadd} event before inserting, then fires the {@link #add} event after the
601 * Component has been inserted.
602 * @param {Number} index The index at which the Component will be inserted
603 * into the Container's items collection
604 * @param {Ext.Component} component The child Component to insert.<br><br>
605 * Ext uses lazy rendering, and will only render the inserted Component should
606 * it become necessary.<br><br>
607 * A Component config object may be passed in order to avoid the overhead of
608 * constructing a real Component object if lazy rendering might mean that the
609 * inserted Component will not be rendered immediately. To take advantage of
610 * this 'lazy instantiation', set the {@link Ext.Component#xtype} config
611 * property to the registered type of the Component wanted.<br><br>
612 * For a list of all available xtypes, see {@link Ext.Component}.
613 * @return {Ext.Component} component The Component (or config object) that was
614 * inserted with the Container's default config values applied.
616 insert : function(index, comp){
618 var a = arguments, len = a.length;
621 for(var i = len-1; i >= 1; --i) {
622 result.push(this.insert(index, a[i]));
626 var c = this.lookupComponent(this.applyDefaults(comp));
627 index = Math.min(index, this.items.length);
628 if(this.fireEvent('beforeadd', this, c, index) !== false && this.onBeforeAdd(c) !== false){
629 if(c.ownerCt == this){
630 this.items.remove(c);
632 this.items.insert(index, c);
633 c.onAdded(this, index);
635 this.fireEvent('add', this, c, index);
641 applyDefaults : function(c){
642 var d = this.defaults;
644 if(Ext.isFunction(d)){
648 c = Ext.ComponentMgr.get(c);
660 onBeforeAdd : function(item){
662 item.ownerCt.remove(item, false);
664 if(this.hideBorders === true){
665 item.border = (item.border === true);
670 * Removes a component from this container. Fires the {@link #beforeremove} event before removing, then fires
671 * the {@link #remove} event after the component has been removed.
672 * @param {Component/String} component The component reference or id to remove.
673 * @param {Boolean} autoDestroy (optional) True to automatically invoke the removed Component's {@link Ext.Component#destroy} function.
674 * Defaults to the value of this Container's {@link #autoDestroy} config.
675 * @return {Ext.Component} component The Component that was removed.
677 remove : function(comp, autoDestroy){
679 var c = this.getComponent(comp);
680 if(c && this.fireEvent('beforeremove', this, c) !== false){
681 this.doRemove(c, autoDestroy);
682 this.fireEvent('remove', this, c);
687 onRemove: function(c){
688 // Empty template method
692 doRemove: function(c, autoDestroy){
694 hasLayout = l && this.rendered;
699 this.items.remove(c);
702 if(autoDestroy === true || (autoDestroy !== false && this.autoDestroy)){
711 * Removes all components from this container.
712 * @param {Boolean} autoDestroy (optional) True to automatically invoke the removed Component's {@link Ext.Component#destroy} function.
713 * Defaults to the value of this Container's {@link #autoDestroy} config.
714 * @return {Array} Array of the destroyed components
716 removeAll: function(autoDestroy){
718 var item, rem = [], items = [];
719 this.items.each(function(i){
722 for (var i = 0, len = rem.length; i < len; ++i){
724 this.remove(item, autoDestroy);
725 if(item.ownerCt !== this){
733 * Examines this container's <code>{@link #items}</code> <b>property</b>
734 * and gets a direct child component of this container.
735 * @param {String/Number} comp This parameter may be any of the following:
736 * <div><ul class="mdetail-params">
737 * <li>a <b><code>String</code></b> : representing the <code>{@link Ext.Component#itemId itemId}</code>
738 * or <code>{@link Ext.Component#id id}</code> of the child component </li>
739 * <li>a <b><code>Number</code></b> : representing the position of the child component
740 * within the <code>{@link #items}</code> <b>property</b></li>
742 * <p>For additional information see {@link Ext.util.MixedCollection#get}.
743 * @return Ext.Component The component (if found).
745 getComponent : function(comp){
746 if(Ext.isObject(comp)){
747 comp = comp.getItemId();
749 return this.items.get(comp);
753 lookupComponent : function(comp){
754 if(Ext.isString(comp)){
755 return Ext.ComponentMgr.get(comp);
756 }else if(!comp.events){
757 return this.createComponent(comp);
763 createComponent : function(config, defaultType){
764 // add in ownerCt at creation time but then immediately
765 // remove so that onBeforeAdd can handle it
766 var c = config.render ? config : Ext.create(Ext.apply({
768 }, config), defaultType || this.defaultType);
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.
779 canLayout : function() {
780 var el = this.getVisibilityEl();
781 return el && el.dom && !el.isStyle("display", "none");
785 * Force this container's layout to be recalculated. A call to this function is required after adding a new component
786 * to an already rendered container, or possibly after changing sizing/position properties of child components.
787 * @param {Boolean} shallow (optional) True to only calc the layout of this component, and let child components auto
788 * calc layouts as required (defaults to false, which calls doLayout recursively for each subcontainer)
789 * @param {Boolean} force (optional) True to force a layout to occur, even if the item is hidden.
790 * @return {Ext.Container} this
793 doLayout : function(shallow, force){
794 var rendered = this.rendered,
795 forceLayout = force || this.forceLayout;
797 if(this.collapsed || !this.canLayout()){
798 this.deferLayout = this.deferLayout || !shallow;
802 shallow = shallow && !this.deferLayout;
804 delete this.deferLayout;
806 if(rendered && this.layout){
807 this.layout.layout();
809 if(shallow !== true && this.items){
810 var cs = this.items.items;
811 for(var i = 0, len = cs.length; i < len; i++){
814 c.doLayout(false, forceLayout);
819 this.onLayout(shallow, forceLayout);
821 // Initial layout completed
822 this.hasLayout = true;
823 delete this.forceLayout;
826 onLayout : Ext.emptyFn,
829 shouldBufferLayout: function(){
831 * Returns true if the container should buffer a layout.
832 * This is true only if the container has previously been laid out
833 * and has a parent container that is pending a layout.
835 var hl = this.hasLayout;
837 // Only ever buffer if we've laid out the first time and we have one pending.
838 return hl ? !this.hasLayoutPending() : false;
840 // Never buffer initial layout
845 hasLayoutPending: function(){
846 // Traverse hierarchy to see if any parent container has a pending layout.
848 this.ownerCt.bubble(function(c){
858 // removes css classes that were added to hide
859 Ext.Container.superclass.onShow.call(this);
860 // If we were sized during the time we were hidden, layout.
861 if(Ext.isDefined(this.deferLayout)){
862 delete this.deferLayout;
868 * Returns the layout currently in use by the container. If the container does not currently have a layout
869 * set, a default {@link Ext.layout.ContainerLayout} will be created and set as the container's layout.
870 * @return {ContainerLayout} layout The container's layout
872 getLayout : function(){
874 var layout = new Ext.layout.ContainerLayout(this.layoutConfig);
875 this.setLayout(layout);
881 beforeDestroy : function(){
884 while(c = this.items.first()){
885 this.doRemove(c, true);
888 if(this.monitorResize){
889 Ext.EventManager.removeResizeListener(this.doLayout, this);
891 Ext.destroy(this.layout);
892 Ext.Container.superclass.beforeDestroy.call(this);
896 * Bubbles up the component/container heirarchy, calling the specified function with each component. The scope (<i>this</i>) of
897 * function call will be the scope provided or the current component. The arguments to the function
898 * will be the args provided or the current component. If the function returns false at any point,
899 * the bubble is stopped.
900 * @param {Function} fn The function to call
901 * @param {Object} scope (optional) The scope of the function (defaults to current node)
902 * @param {Array} args (optional) The args to call the function with (default to passing the current component)
903 * @return {Ext.Container} this
905 bubble : function(fn, scope, args){
908 if(fn.apply(scope || p, args || [p]) === false){
917 * Cascades down the component/container heirarchy from this component (called first), calling the specified function with
918 * each component. The scope (<i>this</i>) of
919 * function call will be the scope provided or the current component. The arguments to the function
920 * will be the args provided or the current component. If the function returns false at any point,
921 * the cascade is stopped on that branch.
922 * @param {Function} fn The function to call
923 * @param {Object} scope (optional) The scope of the function (defaults to current component)
924 * @param {Array} args (optional) The args to call the function with (defaults to passing the current component)
925 * @return {Ext.Container} this
927 cascade : function(fn, scope, args){
928 if(fn.apply(scope || this, args || [this]) !== false){
930 var cs = this.items.items;
931 for(var i = 0, len = cs.length; i < len; i++){
933 cs[i].cascade(fn, scope, args);
935 fn.apply(scope || cs[i], args || [cs[i]]);
944 * Find a component under this container at any level by id
946 * @return Ext.Component
948 findById : function(id){
950 this.cascade(function(c){
951 if(ct != c && c.id === id){
960 * Find a component under this container at any level by xtype or class
961 * @param {String/Class} xtype The xtype string for a component, or the class of the component directly
962 * @param {Boolean} shallow (optional) False to check whether this Component is descended from the xtype (this is
963 * the default), or true to check whether this Component is directly of the specified xtype.
964 * @return {Array} Array of Ext.Components
966 findByType : function(xtype, shallow){
967 return this.findBy(function(c){
968 return c.isXType(xtype, shallow);
973 * Find a component under this container at any level by property
974 * @param {String} prop
975 * @param {String} value
976 * @return {Array} Array of Ext.Components
978 find : function(prop, value){
979 return this.findBy(function(c){
980 return c[prop] === value;
985 * Find a component under this container at any level by a custom function. If the passed function returns
986 * true, the component will be included in the results. The passed function is called with the arguments (component, this container).
987 * @param {Function} fn The function to call
988 * @param {Object} scope (optional)
989 * @return {Array} Array of Ext.Components
991 findBy : function(fn, scope){
992 var m = [], ct = this;
993 this.cascade(function(c){
994 if(ct != c && fn.call(scope || c, c, ct) === true){
1002 * Get a component contained by this container (alias for items.get(key))
1003 * @param {String/Number} key The index or id of the component
1004 * @return {Ext.Component} Ext.Component
1006 get : function(key){
1007 return this.items.get(key);
1011 Ext.Container.LAYOUTS = {};
1012 Ext.reg('container', Ext.Container);