/**
+ * @class Ext.container.AbstractContainer
+ * @extends Ext.Component
+ * <p>An abstract base class which provides shared methods for Containers across the Sencha product line.</p>
+ * Please refer to sub class's documentation
+ */
+Ext.define('Ext.container.AbstractContainer', {
+
+ /* Begin Definitions */
+
+ extend: 'Ext.Component',
+
+ requires: [
+ 'Ext.util.MixedCollection',
+ 'Ext.layout.container.Auto',
+ 'Ext.ZIndexManager'
+ ],
+
+ /* End Definitions */
+ /**
+ * @cfg {String/Object} layout
+ * <p><b>*Important</b>: In order for child items to be correctly sized and
+ * positioned, typically a layout manager <b>must</b> be specified through
+ * the <code>layout</code> configuration option.</p>
+ * <br><p>The sizing and positioning of child {@link #items} is the responsibility of
+ * the Container's layout manager which creates and manages the type of layout
+ * you have in mind. For example:</p>
+ * <p>If the {@link #layout} configuration is not explicitly specified for
+ * a general purpose container (e.g. Container or Panel) the
+ * {@link Ext.layout.container.Auto default layout manager} will be used
+ * which does nothing but render child components sequentially into the
+ * Container (no sizing or positioning will be performed in this situation).</p>
+ * <br><p><b><code>layout</code></b> may be specified as either as an Object or
+ * as a String:</p><div><ul class="mdetail-params">
+ *
+ * <li><u>Specify as an Object</u></li>
+ * <div><ul class="mdetail-params">
+ * <li>Example usage:</li>
+ * <pre><code>
+layout: {
+ type: 'vbox',
+ align: 'left'
+}
+ </code></pre>
+ *
+ * <li><code><b>type</b></code></li>
+ * <br/><p>The layout type to be used for this container. If not specified,
+ * a default {@link Ext.layout.container.Auto} will be created and used.</p>
+ * <br/><p>Valid layout <code>type</code> values are:</p>
+ * <div class="sub-desc"><ul class="mdetail-params">
+ * <li><code><b>{@link Ext.layout.container.Auto Auto}</b></code> <b>Default</b></li>
+ * <li><code><b>{@link Ext.layout.container.Card card}</b></code></li>
+ * <li><code><b>{@link Ext.layout.container.Fit fit}</b></code></li>
+ * <li><code><b>{@link Ext.layout.container.HBox hbox}</b></code></li>
+ * <li><code><b>{@link Ext.layout.container.VBox vbox}</b></code></li>
+ * <li><code><b>{@link Ext.layout.container.Anchor anchor}</b></code></li>
+ * <li><code><b>{@link Ext.layout.container.Table table}</b></code></li>
+ * </ul></div>
+ *
+ * <li>Layout specific configuration properties</li>
+ * <br/><p>Additional layout specific configuration properties may also be
+ * specified. For complete details regarding the valid config options for
+ * each layout type, see the layout class corresponding to the <code>type</code>
+ * specified.</p>
+ *
+ * </ul></div>
+ *
+ * <li><u>Specify as a String</u></li>
+ * <div><ul class="mdetail-params">
+ * <li>Example usage:</li>
+ * <pre><code>
+layout: {
+ type: 'vbox',
+ padding: '5',
+ align: 'left'
+}
+ </code></pre>
+ * <li><code><b>layout</b></code></li>
+ * <br/><p>The layout <code>type</code> to be used for this container (see list
+ * of valid layout type values above).</p><br/>
+ * <br/><p>Additional layout specific configuration properties. For complete
+ * details regarding the valid config options for each layout type, see the
+ * layout class corresponding to the <code>layout</code> specified.</p>
+ * </ul></div></ul></div>
+ */
+
+ /**
+ * @cfg {String/Number} activeItem
+ * A string component id or the numeric index of the component that should be initially activated within the
+ * container's layout on render. For example, activeItem: 'item-1' or activeItem: 0 (index 0 = the first
+ * item in the container's collection). activeItem only applies to layout styles that can display
+ * items one at a time (like {@link Ext.layout.container.Card} and {@link Ext.layout.container.Fit}).
+ */
+ /**
+ * @cfg {Object/Array} items
+ * <p>A single item, or an array of child Components to be added to this container</p>
+ * <p><b>Unless configured with a {@link #layout}, a Container simply renders child Components serially into
+ * its encapsulating element and performs no sizing or positioning upon them.</b><p>
+ * <p>Example:</p>
+ * <pre><code>
+// specifying a single item
+items: {...},
+layout: 'fit', // The single items is sized to fit
+
+// specifying multiple items
+items: [{...}, {...}],
+layout: 'hbox', // The items are arranged horizontally
+ </code></pre>
+ * <p>Each item may be:</p>
+ * <ul>
+ * <li>A {@link Ext.Component Component}</li>
+ * <li>A Component configuration object</li>
+ * </ul>
+ * <p>If a configuration object is specified, the actual type of Component to be
+ * instantiated my be indicated by using the {@link Ext.Component#xtype xtype} option.</p>
+ * <p>Every Component class has its own {@link Ext.Component#xtype xtype}.</p>
+ * <p>If an {@link Ext.Component#xtype xtype} is not explicitly
+ * specified, the {@link #defaultType} for the Container is used, which by default is usually <code>panel</code>.</p>
+ * <p><b>Notes</b>:</p>
+ * <p>Ext uses lazy rendering. Child Components will only be rendered
+ * should it become necessary. Items are automatically laid out when they are first
+ * shown (no sizing is done while hidden), or in response to a {@link #doLayout} call.</p>
+ * <p>Do not specify <code>{@link Ext.panel.Panel#contentEl contentEl}</code> or
+ * <code>{@link Ext.panel.Panel#html html}</code> with <code>items</code>.</p>
+ */
+ /**
+ * @cfg {Object|Function} defaults
+ * <p>This option is a means of applying default settings to all added items whether added through the {@link #items}
+ * config or via the {@link #add} or {@link #insert} methods.</p>
+ * <p>If an added item is a config object, and <b>not</b> an instantiated Component, then the default properties are
+ * unconditionally applied. If the added item <b>is</b> an instantiated Component, then the default properties are
+ * applied conditionally so as not to override existing properties in the item.</p>
+ * <p>If the defaults option is specified as a function, then the function will be called using this Container as the
+ * scope (<code>this</code> reference) and passing the added item as the first parameter. Any resulting object
+ * from that call is then applied to the item as default properties.</p>
+ * <p>For example, to automatically apply padding to the body of each of a set of
+ * contained {@link Ext.panel.Panel} items, you could pass: <code>defaults: {bodyStyle:'padding:15px'}</code>.</p>
+ * <p>Usage:</p><pre><code>
+defaults: { // defaults are applied to items, not the container
+ autoScroll:true
+},
+items: [
+ {
+ xtype: 'panel', // defaults <b>do not</b> have precedence over
+ id: 'panel1', // options in config objects, so the defaults
+ autoScroll: false // will not be applied here, panel1 will be autoScroll:false
+ },
+ new Ext.panel.Panel({ // defaults <b>do</b> have precedence over options
+ id: 'panel2', // options in components, so the defaults
+ autoScroll: false // will be applied here, panel2 will be autoScroll:true.
+ })
+]</code></pre>
+ */
+
+ /** @cfg {Boolean} suspendLayout
+ * If true, suspend calls to doLayout. Useful when batching multiple adds to a container and not passing them
+ * as multiple arguments or an array.
+ */
+ suspendLayout : false,
+
+ /** @cfg {Boolean} autoDestroy
+ * If true the container will automatically destroy any contained component that is removed from it, else
+ * destruction must be handled manually.
+ * Defaults to true.
+ */
+ autoDestroy : true,
+
+ /** @cfg {String} defaultType
+ * <p>The default {@link Ext.Component xtype} of child Components to create in this Container when
+ * a child item is specified as a raw configuration object, rather than as an instantiated Component.</p>
+ * <p>Defaults to <code>'panel'</code>.</p>
+ */
+ defaultType: 'panel',
+
+ isContainer : true,
+
+ baseCls: Ext.baseCSSPrefix + 'container',
+
+ /**
+ * @cfg {Array} bubbleEvents
+ * <p>An array of events that, when fired, should be bubbled to any parent container.
+ * See {@link Ext.util.Observable#enableBubble}.
+ * Defaults to <code>['add', 'remove']</code>.
+ */
+ bubbleEvents: ['add', 'remove'],
+
+ // @private
+ initComponent : function(){
+ var me = this;
+ me.addEvents(
+ /**
+ * @event afterlayout
+ * Fires when the components in this container are arranged by the associated layout manager.
+ * @param {Ext.container.Container} this
+ * @param {ContainerLayout} layout The ContainerLayout implementation for this container
+ */
+ 'afterlayout',
+ /**
+ * @event beforeadd
+ * Fires before any {@link Ext.Component} is added or inserted into the container.
+ * A handler can return false to cancel the add.
+ * @param {Ext.container.Container} this
+ * @param {Ext.Component} component The component being added
+ * @param {Number} index The index at which the component will be added to the container's items collection
+ */
+ 'beforeadd',
+ /**
+ * @event beforeremove
+ * Fires before any {@link Ext.Component} is removed from the container. A handler can return
+ * false to cancel the remove.
+ * @param {Ext.container.Container} this
+ * @param {Ext.Component} component The component being removed
+ */
+ 'beforeremove',
+ /**
+ * @event add
+ * @bubbles
+ * Fires after any {@link Ext.Component} is added or inserted into the container.
+ * @param {Ext.container.Container} this
+ * @param {Ext.Component} component The component that was added
+ * @param {Number} index The index at which the component was added to the container's items collection
+ */
+ 'add',
+ /**
+ * @event remove
+ * @bubbles
+ * Fires after any {@link Ext.Component} is removed from the container.
+ * @param {Ext.container.Container} this
+ * @param {Ext.Component} component The component that was removed
+ */
+ 'remove',
+ /**
+ * @event beforecardswitch
+ * Fires before this container switches the active card. This event
+ * is only available if this container uses a CardLayout. Note that
+ * TabPanel and Carousel both get a CardLayout by default, so both
+ * will have this event.
+ * A handler can return false to cancel the card switch.
+ * @param {Ext.container.Container} this
+ * @param {Ext.Component} newCard The card that will be switched to
+ * @param {Ext.Component} oldCard The card that will be switched from
+ * @param {Number} index The index of the card that will be switched to
+ * @param {Boolean} animated True if this cardswitch will be animated
+ */
+ 'beforecardswitch',
+ /**
+ * @event cardswitch
+ * Fires after this container switches the active card. If the card
+ * is switched using an animation, this event will fire after the
+ * animation has finished. This event is only available if this container
+ * uses a CardLayout. Note that TabPanel and Carousel both get a CardLayout
+ * by default, so both will have this event.
+ * @param {Ext.container.Container} this
+ * @param {Ext.Component} newCard The card that has been switched to
+ * @param {Ext.Component} oldCard The card that has been switched from
+ * @param {Number} index The index of the card that has been switched to
+ * @param {Boolean} animated True if this cardswitch was animated
+ */
+ 'cardswitch'
+ );
+
+ // layoutOnShow stack
+ me.layoutOnShow = Ext.create('Ext.util.MixedCollection');
+ me.callParent();
+ me.initItems();
+ },
+
+ // @private
+ initItems : function() {
+ var me = this,
+ items = me.items;
+
+ /**
+ * The MixedCollection containing all the child items of this container.
+ * @property items
+ * @type Ext.util.MixedCollection
+ */
+ me.items = Ext.create('Ext.util.MixedCollection', false, me.getComponentId);
+
+ if (items) {
+ if (!Ext.isArray(items)) {
+ items = [items];
+ }
+
+ me.add(items);
+ }
+ },
+
+ // @private
+ afterRender : function() {
+ this.getLayout();
+ this.callParent();
+ },
+
+ // @private
+ setLayout : function(layout) {
+ var currentLayout = this.layout;
+
+ if (currentLayout && currentLayout.isLayout && currentLayout != layout) {
+ currentLayout.setOwner(null);
+ }
+
+ this.layout = layout;
+ layout.setOwner(this);
+ },
+
+ /**
+ * Returns the {@link Ext.layout.container.AbstractContainer layout} instance currently associated with this Container.
+ * If a layout has not been instantiated yet, that is done first
+ * @return {Ext.layout.container.AbstractContainer} The layout
+ */
+ getLayout : function() {
+ var me = this;
+ if (!me.layout || !me.layout.isLayout) {
+ me.setLayout(Ext.layout.Layout.create(me.layout, 'autocontainer'));
+ }
+
+ return me.layout;
+ },
+
+ /**
+ * Manually force this container's layout to be recalculated. The framwork uses this internally to refresh layouts
+ * form most cases.
+ * @return {Ext.container.Container} this
+ */
+ doLayout : function() {
+ var me = this,
+ layout = me.getLayout();
+
+ if (me.rendered && layout && !me.suspendLayout) {
+ // If either dimension is being auto-set, then it requires a ComponentLayout to be run.
+ if ((!Ext.isNumber(me.width) || !Ext.isNumber(me.height)) && me.componentLayout.type !== 'autocomponent') {
+ // Only run the ComponentLayout if it is not already in progress
+ if (me.componentLayout.layoutBusy !== true) {
+ me.doComponentLayout();
+ if (me.componentLayout.layoutCancelled === true) {
+ layout.layout();
+ }
+ }
+ }
+ // Both dimensions defined, run a ContainerLayout
+ else {
+ // Only run the ContainerLayout if it is not already in progress
+ if (layout.layoutBusy !== true) {
+ layout.layout();
+ }
+ }
+ }
+
+ return me;
+ },
+
+ // @private
+ afterLayout : function(layout) {
+ this.fireEvent('afterlayout', this, layout);
+ },
+
+ // @private
+ prepareItems : function(items, applyDefaults) {
+ if (!Ext.isArray(items)) {
+ items = [items];
+ }
+
+ // Make sure defaults are applied and item is initialized
+ var i = 0,
+ len = items.length,
+ item;
+
+ for (; i < len; i++) {
+ item = items[i];
+ if (applyDefaults) {
+ item = this.applyDefaults(item);
+ }
+ items[i] = this.lookupComponent(item);
+ }
+ return items;
+ },
+
+ // @private
+ applyDefaults : function(config) {
+ var defaults = this.defaults;
+
+ if (defaults) {
+ if (Ext.isFunction(defaults)) {
+ defaults = defaults.call(this, config);
+ }
+
+ if (Ext.isString(config)) {
+ config = Ext.ComponentManager.get(config);
+ Ext.applyIf(config, defaults);
+ } else if (!config.isComponent) {
+ Ext.applyIf(config, defaults);
+ } else {
+ Ext.applyIf(config, defaults);
+ }
+ }
+
+ return config;
+ },
+
+ // @private
+ lookupComponent : function(comp) {
+ return Ext.isString(comp) ? Ext.ComponentManager.get(comp) : this.createComponent(comp);
+ },
+
+ // @private
+ createComponent : function(config, defaultType) {
+ // // add in ownerCt at creation time but then immediately
+ // // remove so that onBeforeAdd can handle it
+ // var component = Ext.create(Ext.apply({ownerCt: this}, config), defaultType || this.defaultType);
+ //
+ // delete component.initialConfig.ownerCt;
+ // delete component.ownerCt;
+
+ return Ext.ComponentManager.create(config, defaultType || this.defaultType);
+ },
+
+ // @private - used as the key lookup function for the items collection
+ getComponentId : function(comp) {
+ return comp.getItemId();
+ },
+
+ /**
+
+Adds {@link Ext.Component Component}(s) to this Container.
+
+##Description:##
+
+- Fires the {@link #beforeadd} event before adding.
+- The Container's {@link #defaults default config values} will be applied
+ accordingly (see `{@link #defaults}` for details).
+- Fires the `{@link #add}` event after the component has been added.
+
+##Notes:##
+
+If the Container is __already rendered__ when `add`
+is called, it will render the newly added Component into its content area.
+
+__**If**__ the Container was configured with a size-managing {@link #layout} manager, the Container
+will recalculate its internal layout at this time too.
+
+Note that the default layout manager simply renders child Components sequentially into the content area and thereafter performs no sizing.
+
+If adding multiple new child Components, pass them as an array to the `add` method, so that only one layout recalculation is performed.
+
+ tb = new {@link Ext.toolbar.Toolbar}({
+ renderTo: document.body
+ }); // toolbar is rendered
+ tb.add([{text:'Button 1'}, {text:'Button 2'}]); // add multiple items. ({@link #defaultType} for {@link Ext.toolbar.Toolbar Toolbar} is 'button')
+
+##Warning:##
+
+Components directly managed by the BorderLayout layout manager
+may not be removed or added. See the Notes for {@link Ext.layout.container.Border BorderLayout}
+for more details.
+
+ * @param {...Object/Array} Component
+ * Either one or more Components to add or an Array of Components to add.
+ * See `{@link #items}` for additional information.
+ *
+ * @return {Ext.Component/Array} The Components that were added.
+ * @markdown
+ */
+ add : function() {
+ var me = this,
+ args = Array.prototype.slice.call(arguments),
+ hasMultipleArgs,
+ items,
+ results = [],
+ i,
+ ln,
+ item,
+ index = -1,
+ cmp;
+
+ if (typeof args[0] == 'number') {
+ index = args.shift();
+ }
+
+ hasMultipleArgs = args.length > 1;
+ if (hasMultipleArgs || Ext.isArray(args[0])) {
+
+ items = hasMultipleArgs ? args : args[0];
+ // Suspend Layouts while we add multiple items to the container
+ me.suspendLayout = true;
+ for (i = 0, ln = items.length; i < ln; i++) {
+ item = items[i];
+
+ //<debug>
+ if (!item) {
+ Ext.Error.raise("Trying to add a null item as a child of Container with itemId/id: " + me.getItemId());
+ }
+ //</debug>
+
+ if (index != -1) {
+ item = me.add(index + i, item);
+ } else {
+ item = me.add(item);
+ }
+ results.push(item);
+ }
+ // Resume Layouts now that all items have been added and do a single layout for all the items just added
+ me.suspendLayout = false;
+ me.doLayout();
+ return results;
+ }
+
+ cmp = me.prepareItems(args[0], true)[0];
+
+ // Floating Components are not added into the items collection
+ // But they do get an upward ownerCt link so that they can traverse
+ // up to their z-index parent.
+ if (cmp.floating) {
+ cmp.onAdded(me, index);
+ } else {
+ index = (index !== -1) ? index : me.items.length;
+ if (me.fireEvent('beforeadd', me, cmp, index) !== false && me.onBeforeAdd(cmp) !== false) {
+ me.items.insert(index, cmp);
+ cmp.onAdded(me, index);
+ me.onAdd(cmp, index);
+ me.fireEvent('add', me, cmp, index);
+ }
+ me.doLayout();
+ }
+ return cmp;
+ },
+
+ /**
+ * @private
+ * <p>Called by Component#doAutoRender</p>
+ * <p>Register a Container configured <code>floating: true</code> with this Container's {@link Ext.ZIndexManager ZIndexManager}.</p>
+ * <p>Components added in ths way will not participate in the layout, but will be rendered
+ * upon first show in the way that {@link Ext.window.Window Window}s are.</p>
+ * <p></p>
+ */
+ registerFloatingItem: function(cmp) {
+ var me = this;
+ if (!me.floatingItems) {
+ me.floatingItems = Ext.create('Ext.ZIndexManager', me);
+ }
+ me.floatingItems.register(cmp);
+ },
+
+ onAdd : Ext.emptyFn,
+ onRemove : Ext.emptyFn,
+
+ /**
+ * Inserts a Component into this Container at a specified index. Fires the
+ * {@link #beforeadd} event before inserting, then fires the {@link #add} event after the
+ * Component has been inserted.
+ * @param {Number} index The index at which the Component will be inserted
+ * into the Container's items collection
+ * @param {Ext.Component} component The child Component to insert.<br><br>
+ * Ext uses lazy rendering, and will only render the inserted Component should
+ * it become necessary.<br><br>
+ * A Component config object may be passed in order to avoid the overhead of
+ * constructing a real Component object if lazy rendering might mean that the
+ * inserted Component will not be rendered immediately. To take advantage of
+ * this 'lazy instantiation', set the {@link Ext.Component#xtype} config
+ * property to the registered type of the Component wanted.<br><br>
+ * For a list of all available xtypes, see {@link Ext.Component}.
+ * @return {Ext.Component} component The Component (or config object) that was
+ * inserted with the Container's default config values applied.
+ */
+ insert : function(index, comp) {
+ return this.add(index, comp);
+ },
+
+ /**
+ * Moves a Component within the Container
+ * @param {Number} fromIdx The index the Component you wish to move is currently at.
+ * @param {Number} toIdx The new index for the Component.
+ * @return {Ext.Component} component The Component (or config object) that was moved.
+ */
+ move : function(fromIdx, toIdx) {
+ var items = this.items,
+ item;
+ item = items.removeAt(fromIdx);
+ if (item === false) {
+ return false;
+ }
+ items.insert(toIdx, item);
+ this.doLayout();
+ return item;
+ },
+
+ // @private
+ onBeforeAdd : function(item) {
+ var me = this;
+
+ if (item.ownerCt) {
+ item.ownerCt.remove(item, false);
+ }
+
+ if (me.border === false || me.border === 0) {
+ item.border = (item.border === true);
+ }
+ },
+
+ /**
+ * Removes a component from this container. Fires the {@link #beforeremove} event before removing, then fires
+ * the {@link #remove} event after the component has been removed.
+ * @param {Component/String} component The component reference or id to remove.
+ * @param {Boolean} autoDestroy (optional) True to automatically invoke the removed Component's {@link Ext.Component#destroy} function.
+ * Defaults to the value of this Container's {@link #autoDestroy} config.
+ * @return {Ext.Component} component The Component that was removed.
+ */
+ remove : function(comp, autoDestroy) {
+ var me = this,
+ c = me.getComponent(comp);
+ //<debug>
+ if (Ext.isDefined(Ext.global.console) && !c) {
+ console.warn("Attempted to remove a component that does not exist. Ext.container.Container: remove takes an argument of the component to remove. cmp.remove() is incorrect usage.");
+ }
+ //</debug>
+
+ if (c && me.fireEvent('beforeremove', me, c) !== false) {
+ me.doRemove(c, autoDestroy);
+ me.fireEvent('remove', me, c);
+ }
+
+ return c;
+ },
+
+ // @private
+ doRemove : function(component, autoDestroy) {
+ var me = this,
+ layout = me.layout,
+ hasLayout = layout && me.rendered;
+
+ me.items.remove(component);
+ component.onRemoved();
+
+ if (hasLayout) {
+ layout.onRemove(component);
+ }
+
+ me.onRemove(component, autoDestroy);
+
+ if (autoDestroy === true || (autoDestroy !== false && me.autoDestroy)) {
+ component.destroy();
+ }
+
+ if (hasLayout && !autoDestroy) {
+ layout.afterRemove(component);
+ }
+
+ if (!me.destroying) {
+ me.doLayout();
+ }
+ },
+
+ /**
+ * Removes all components from this container.
+ * @param {Boolean} autoDestroy (optional) True to automatically invoke the removed Component's {@link Ext.Component#destroy} function.
+ * Defaults to the value of this Container's {@link #autoDestroy} config.
+ * @return {Array} Array of the destroyed components
+ */
+ removeAll : function(autoDestroy) {
+ var me = this,
+ removeItems = me.items.items.slice(),
+ items = [],
+ i = 0,
+ len = removeItems.length,
+ item;
+
+ // Suspend Layouts while we remove multiple items from the container
+ me.suspendLayout = true;
+ for (; i < len; i++) {
+ item = removeItems[i];
+ me.remove(item, autoDestroy);
+
+ if (item.ownerCt !== me) {
+ items.push(item);
+ }
+ }
+
+ // Resume Layouts now that all items have been removed and do a single layout
+ me.suspendLayout = false;
+ me.doLayout();
+ return items;
+ },
+
+ // Used by ComponentQuery to retrieve all of the items
+ // which can potentially be considered a child of this Container.
+ // This should be overriden by components which have child items
+ // that are not contained in items. For example dockedItems, menu, etc
+ // IMPORTANT note for maintainers:
+ // Items are returned in tree traversal order. Each item is appended to the result array
+ // followed by the results of that child's getRefItems call.
+ // Floating child items are appended after internal child items.
+ getRefItems : function(deep) {
+ var me = this,
+ items = me.items.items,
+ len = items.length,
+ i = 0,
+ item,
+ result = [];
+
+ for (; i < len; i++) {
+ item = items[i];
+ result.push(item);
+ if (deep && item.getRefItems) {
+ result.push.apply(result, item.getRefItems(true));
+ }
+ }
+
+ // Append floating items to the list.
+ // These will only be present after they are rendered.
+ if (me.floatingItems && me.floatingItems.accessList) {
+ result.push.apply(result, me.floatingItems.accessList);
+ }
+
+ return result;
+ },
+
+ /**
+ * Cascades down the component/container heirarchy from this component (passed in the first call), calling the specified function with
+ * each component. The scope (<code>this</code> reference) of the
+ * function call will be the scope provided or the current component. The arguments to the function
+ * will be the args provided or the current component. If the function returns false at any point,
+ * the cascade is stopped on that branch.
+ * @param {Function} fn The function to call
+ * @param {Object} scope (optional) The scope of the function (defaults to current component)
+ * @param {Array} args (optional) The args to call the function with. The current component always passed as the last argument.
+ * @return {Ext.Container} this
+ */
+ cascade : function(fn, scope, origArgs){
+ var me = this,
+ cs = me.items ? me.items.items : [],
+ len = cs.length,
+ i = 0,
+ c,
+ args = origArgs ? origArgs.concat(me) : [me],
+ componentIndex = args.length - 1;
+
+ if (fn.apply(scope || me, args) !== false) {
+ for(; i < len; i++){
+ c = cs[i];
+ if (c.cascade) {
+ c.cascade(fn, scope, origArgs);
+ } else {
+ args[componentIndex] = c;
+ fn.apply(scope || cs, args);
+ }
+ }
+ }
+ return this;
+ },
+
+ /**
+ * Examines this container's <code>{@link #items}</code> <b>property</b>
+ * and gets a direct child component of this container.
+ * @param {String/Number} comp This parameter may be any of the following:
+ * <div><ul class="mdetail-params">
+ * <li>a <b><code>String</code></b> : representing the <code>{@link Ext.Component#itemId itemId}</code>
+ * or <code>{@link Ext.Component#id id}</code> of the child component </li>
+ * <li>a <b><code>Number</code></b> : representing the position of the child component
+ * within the <code>{@link #items}</code> <b>property</b></li>
+ * </ul></div>
+ * <p>For additional information see {@link Ext.util.MixedCollection#get}.
+ * @return Ext.Component The component (if found).
+ */
+ getComponent : function(comp) {
+ if (Ext.isObject(comp)) {
+ comp = comp.getItemId();
+ }
+
+ return this.items.get(comp);
+ },
+
+ /**
+ * Retrieves all descendant components which match the passed selector.
+ * Executes an Ext.ComponentQuery.query using this container as its root.
+ * @param {String} selector Selector complying to an Ext.ComponentQuery selector
+ * @return {Array} Ext.Component's which matched the selector
+ */
+ query : function(selector) {
+ return Ext.ComponentQuery.query(selector, this);
+ },
+
+ /**
+ * Retrieves the first direct child of this container which matches the passed selector.
+ * The passed in selector must comply with an Ext.ComponentQuery selector.
+ * @param {String} selector An Ext.ComponentQuery selector
+ * @return Ext.Component
+ */
+ child : function(selector) {
+ return this.query('> ' + selector)[0] || null;
+ },
+
+ /**
+ * Retrieves the first descendant of this container which matches the passed selector.
+ * The passed in selector must comply with an Ext.ComponentQuery selector.
+ * @param {String} selector An Ext.ComponentQuery selector
+ * @return Ext.Component
+ */
+ down : function(selector) {
+ return this.query(selector)[0] || null;
+ },
+
+ // inherit docs
+ show : function() {
+ this.callParent(arguments);
+ this.performDeferredLayouts();
+ return this;
+ },
+
+ // Lay out any descendant containers who queued a layout operation during the time this was hidden
+ // This is also called by Panel after it expands because descendants of a collapsed Panel allso queue any layout ops.
+ performDeferredLayouts: function() {
+ var layoutCollection = this.layoutOnShow,
+ ln = layoutCollection.getCount(),
+ i = 0,
+ needsLayout,
+ item;
+
+ for (; i < ln; i++) {
+ item = layoutCollection.get(i);
+ needsLayout = item.needsLayout;
+
+ if (Ext.isObject(needsLayout)) {
+ item.doComponentLayout(needsLayout.width, needsLayout.height, needsLayout.isSetSize, needsLayout.ownerCt);
+ }
+ }
+ layoutCollection.clear();
+ },
+
+ //@private
+ // Enable all immediate children that was previously disabled
+ onEnable: function() {
+ Ext.Array.each(this.query('[isFormField]'), function(item) {
+ if (item.resetDisable) {
+ item.enable();
+ delete item.resetDisable;
+ }
+ });
+ this.callParent();
+ },
+
+ // @private
+ // Disable all immediate children that was previously disabled
+ onDisable: function() {
+ Ext.Array.each(this.query('[isFormField]'), function(item) {
+ if (item.resetDisable !== false && !item.disabled) {
+ item.disable();
+ item.resetDisable = true;
+ }
+ });
+ this.callParent();
+ },
+
+ /**
+ * Occurs before componentLayout is run. Returning false from this method will prevent the containerLayout
+ * from being executed.
+ */
+ beforeLayout: function() {
+ return true;
+ },
+
+ // @private
+ beforeDestroy : function() {
+ var me = this,
+ items = me.items,
+ c;
+
+ if (items) {
+ while ((c = items.first())) {
+ me.doRemove(c, true);
+ }
+ }
+
+ Ext.destroy(
+ me.layout,
+ me.floatingItems
+ );
+ me.callParent();
+ }
+});