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266 lines
8.8 KiB
JavaScript
266 lines
8.8 KiB
JavaScript
/**
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* @class YAHOO.ext.BasicLayoutRegion
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* @extends YAHOO.ext.util.Observable
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* This class represents a lightweight region in a layout manager. This region does not move dom nodes
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* and does not have a titlebar, tabs or any other features. All it does is size and position
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* panels. To create a BasicLayoutRegion, add lightweight:true or basic:true to your regions config.
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*/
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YAHOO.ext.BasicLayoutRegion = function(mgr, config, pos, skipConfig){
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this.mgr = mgr;
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this.position = pos;
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this.events = {
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/**
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* @event beforeremove
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* Fires before a panel is removed (or closed). To cancel the removal set "e.cancel = true" on the event argument.
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* @param {YAHOO.ext.LayoutRegion} this
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* @param {YAHOO.ext.ContentPanel} panel The panel
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* @param {Object} e The cancel event object
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*/
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'beforeremove' : true,
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/**
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* @event invalidated
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* Fires when the layout for this region is changed.
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* @param {YAHOO.ext.LayoutRegion} this
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*/
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'invalidated' : true,
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/**
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* @event visibilitychange
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* Fires when this region is shown or hidden
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* @param {YAHOO.ext.LayoutRegion} this
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* @param {Boolean} visibility true or false
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*/
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'visibilitychange' : true,
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/**
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* @event paneladded
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* Fires when a panel is added.
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* @param {YAHOO.ext.LayoutRegion} this
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* @param {YAHOO.ext.ContentPanel} panel The panel
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*/
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'paneladded' : true,
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/**
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* @event panelremoved
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* Fires when a panel is removed.
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* @param {YAHOO.ext.LayoutRegion} this
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* @param {YAHOO.ext.ContentPanel} panel The panel
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*/
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'panelremoved' : true,
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/**
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* @event collapsed
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* Fires when this region is collapsed.
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* @param {YAHOO.ext.LayoutRegion} this
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*/
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'collapsed' : true,
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/**
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* @event expanded
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* Fires when this region is expanded.
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* @param {YAHOO.ext.LayoutRegion} this
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*/
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'expanded' : true,
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/**
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* @event panelactivated
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* Fires when a panel is activated.
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* @param {YAHOO.ext.LayoutRegion} this
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* @param {YAHOO.ext.ContentPanel} panel The activated panel
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*/
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'panelactivated' : true,
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/**
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* @event resized
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* Fires when the user resizes this region.
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* @param {YAHOO.ext.LayoutRegion} this
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* @param {Number} newSize The new size (width for east/west, height for north/south)
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*/
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'resized' : true
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};
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/** A collection of panels in this region. @type YAHOO.ext.util.MixedCollection */
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this.panels = new YAHOO.ext.util.MixedCollection();
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this.panels.getKey = this.getPanelId.createDelegate(this);
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this.box = null;
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this.activePanel = null;
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if(skipConfig !== true){
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this.applyConfig(config);
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}
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};
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YAHOO.extendX(YAHOO.ext.BasicLayoutRegion, YAHOO.ext.util.Observable, {
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getPanelId : function(p){
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return p.getId();
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},
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applyConfig : function(config){
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this.margins = config.margins || this.margins || {top: 0, left: 0, right:0, bottom: 0};
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this.config = config;
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},
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/**
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* Resizes the region to the specified size. For vertical regions (west, east) this adjusts
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* the width, for horizontal (north, south) the height.
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* @param {Number} newSize The new width or height
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*/
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resizeTo : function(newSize){
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if(this.activePanel){
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var el = this.activePanel.getEl();
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switch(this.position){
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case 'east':
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case 'west':
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el.setWidth(newSize);
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this.fireEvent('resized', this, newSize);
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break;
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case 'north':
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case 'south':
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el.setHeight(newSize);
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this.fireEvent('resized', this, newSize);
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break;
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}
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}
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},
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getBox : function(){
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return this.activePanel ? this.activePanel.getEl().getBox(false, true) : null;
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},
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getMargins : function(){
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return this.margins;
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},
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updateBox : function(box){
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this.box = box;
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var el = this.activePanel.getEl();
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el.dom.style.left = box.x + 'px';
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el.dom.style.top = box.y + 'px';
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el.setSize(box.width, box.height);
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},
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/**
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* Returns the container element for this region.
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* @return {YAHOO.ext.Element}
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*/
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getEl : function(){
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return this.activePanel;
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},
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/**
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* Returns true if this region is currently visible.
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* @return {Boolean}
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*/
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isVisible : function(){
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return this.activePanel ? true : false;
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},
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setActivePanel : function(panel){
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panel = this.getPanel(panel);
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if(this.activePanel && this.activePanel != panel){
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this.activePanel.setActiveState(false);
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this.activePanel.getEl().setStyle({left:-10000,right:-10000});
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}
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this.activePanel = panel;
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panel.setActiveState(true);
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if(this.box){
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panel.setSize(this.box.width, this.box.height);
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}
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this.fireEvent('panelactivated', this, panel);
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this.fireEvent('invalidated');
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},
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/**
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* Show the specified panel.
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* @param {Number/String/ContentPanel} panelId The panels index, id or the panel itself
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* @return {YAHOO.ext.ContentPanel} The shown panel or null
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*/
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showPanel : function(panel){
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if(panel = this.getPanel(panel)){
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this.setActivePanel(panel);
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}
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return panel;
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},
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/**
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* Get the active panel for this region.
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* @return {YAHOO.ext.ContentPanel} The active panel or null
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*/
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getActivePanel : function(){
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return this.activePanel;
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},
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/**
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* Add the passed ContentPanel(s)
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* @param {ContentPanel...} panel The ContentPanel(s) to add (you can pass more than one)
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* @return {YAHOO.ext.ContentPanel} The panel added (if only one was added)
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*/
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add : function(panel){
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if(arguments.length > 1){
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for(var i = 0, len = arguments.length; i < len; i++) {
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this.add(arguments[i]);
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}
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return null;
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}
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if(this.hasPanel(panel)){
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this.showPanel(panel);
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return panel;
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}
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panel.setRegion(this);
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this.panels.add(panel);
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panel.getEl().setStyle('position', 'absolute');
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if(!panel.background){
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this.setActivePanel(panel);
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if(this.config.initialSize && this.panels.getCount()==1){
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this.resizeTo(this.config.initialSize);
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}
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}
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this.fireEvent('paneladded', this, panel);
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return panel;
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},
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/**
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* Returns true if the panel is in this region.
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* @param {Number/String/ContentPanel} panel The panels index, id or the panel itself
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* @return {Boolean}
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*/
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hasPanel : function(panel){
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if(typeof panel == 'object'){ // must be panel obj
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panel = panel.getId();
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}
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return this.getPanel(panel) ? true : false;
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},
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/**
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* Removes the specified panel. If preservePanel is not true (either here or in the config), the panel is destroyed.
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* @param {Number/String/ContentPanel} panel The panels index, id or the panel itself
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* @param {Boolean} preservePanel Overrides the config preservePanel option
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* @return {YAHOO.ext.ContentPanel} The panel that was removed
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*/
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remove : function(panel, preservePanel){
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panel = this.getPanel(panel);
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if(!panel){
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return null;
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}
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var e = {};
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this.fireEvent('beforeremove', this, panel, e);
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if(e.cancel === true){
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return null;
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}
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var panelId = panel.getId();
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this.panels.removeKey(panelId);
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return panel;
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},
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/**
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* Returns the panel specified or null if it's not in this region.
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* @param {Number/String/ContentPanel} panel The panels index, id or the panel itself
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* @return {YAHOO.ext.ContentPanel}
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*/
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getPanel : function(id){
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if(typeof id == 'object'){ // must be panel obj
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return id;
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}
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return this.panels.get(id);
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},
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/**
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* Returns this regions position (north/south/east/west/center).
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* @return {String}
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*/
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getPosition: function(){
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return this.position;
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}
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});
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