text: /*
   * Ext JS Library 2.2.1
   * Copyright(c) 2006-2009, Ext JS, LLC.
   * licensing@extjs.com
   * 
   * http://extjs.com/license
   */
  
  /**
   * @class Ext.Window
   * @extends Ext.Panel
   * A specialized panel intended for use as an application window.  Windows are floated and draggable by default, and
   * also provide specific behavior like the ability to maximize and restore (with an event for minimizing, since the
   * minimize behavior is application-specific).  Windows can also be linked to a {@link Ext.WindowGroup} or managed
   * by the {@link Ext.WindowMgr} to provide grouping, activation, to front/back and other application-specific behavior.
   * @constructor
   * @param {Object} config The config object
   */
  Ext.Window = Ext.extend(Ext.Panel, {
      /**
       * @cfg {Number} x
       * The X position of the left edge of the Window on initial showing. Defaults to centering the Window within
       * the width of the Window's container {@link Ext.Element Element) (The Element that the Window is rendered to).
       */
      /**
       * @cfg {Number} y
       * The Y position of the top edge of the Window on initial showing. Defaults to centering the Window within
       * the height of the Window's container {@link Ext.Element Element) (The Element that the Window is rendered to).
       */
      /**
       * @cfg {Boolean} modal
       * True to make the window modal and mask everything behind it when displayed, false to display it without
       * restricting access to other UI elements (defaults to false).
       */
      /**
       * @cfg {String/Element} animateTarget
       * Id or element from which the window should animate while opening (defaults to null with no animation).
       */
      /**
       * @cfg {String} resizeHandles
       * A valid {@link Ext.Resizable} handles config string (defaults to 'all').  Only applies when resizable = true.
       */
      /**
       * @cfg {Ext.WindowGroup} manager
       * A reference to the WindowGroup that should manage this window (defaults to {@link Ext.WindowMgr}).
       */
      /**
      * @cfg {String/Number/Button} defaultButton
      * The id / index of a button or a button instance to focus when this window received the focus.
      */
      /**
      * @cfg {Function} onEsc
      * Allows override of the built-in processing for the escape key. Default action
      * is to close the Window (performing whatever action is specified in {@link #closeAction}.
      * To prevent the Window closing when the escape key is pressed, specify this as
      * Ext.emptyFn (See {@link Ext#emptyFn}).
      */
      /**
       * @cfg {Boolean} collapsed
       * True to render the window collapsed, false to render it expanded (defaults to false). Note that if 
       * {@link #expandOnShow} is true (the default) it will override the <tt>collapsed</tt> config and the window 
       * will always be expanded when shown.
       */
      /**
       * @cfg {Boolean} maximized
       * True to initially display the window in a maximized state. (Defaults to false).
       */
      
      /**
      * @cfg {String} baseCls
      * The base CSS class to apply to this panel's element (defaults to 'x-window').
      */
      baseCls : 'x-window',
      /**
       * @cfg {Boolean} resizable
       * True to allow user resizing at each edge and corner of the window, false to disable resizing (defaults to true).
       */
      resizable:true,
      /**
       * @cfg {Boolean} draggable
       * True to allow the window to be dragged by the header bar, false to disable dragging (defaults to true).  Note
       * that by default the window will be centered in the viewport, so if dragging is disabled the window may need
       * to be positioned programmatically after render (e.g., myWindow.setPosition(100, 100);).
       */
      draggable:true,
      /**
       * @cfg {Boolean} closable
       * <p>True to display the 'close' tool button and allow the user to close the window, false to
       * hide the button and disallow closing the window (default to true).</p>
       * <p>By default, when close is requested by either clicking the close button in the header
       * or pressing ESC when the Window has focus, the {@link #close} method will be called. This
       * will <i>destroy</i> the Window and its content meaning that it may not be reused.</p>
       * <p>To make closing a Window <i>hide</i> the Window so that it may be reused, set
       * {@link #closeAction} to 'hide'.
       */
      closable : true,
      /**
       * @cfg {Boolean} constrain
       * True to constrain the window to the viewport, false to allow it to fall outside of the viewport
       * (defaults to false).  Optionally the header only can be constrained using {@link #constrainHeader}.
       */
      constrain:false,
      /**
       * @cfg {Boolean} constrainHeader
       * True to constrain the window header to the viewport, allowing the window body to fall outside of the viewport,
       * false to allow the header to fall outside the viewport (defaults to false).  Optionally the entire window
       * can be constrained using {@link #constrain}.
       */
      constrainHeader:false,
      /**
       * @cfg {Boolean} plain
       * True to render the window body with a transparent background so that it will blend into the framing
       * elements, false to add a lighter background color to visually highlight the body element and separate it
       * more distinctly from the surrounding frame (defaults to false).
       */
      plain:false,
      /**
       * @cfg {Boolean} minimizable
       * True to display the 'minimize' tool button and allow the user to minimize the window, false to hide the button
       * and disallow minimizing the window (defaults to false).  Note that this button provides no implementation --
       * the behavior of minimizing a window is implementation-specific, so the minimize event must be handled and a
       * custom minimize behavior implemented for this option to be useful.
       */
      minimizable : false,
      /**
       * @cfg {Boolean} maximizable
       * True to display the 'maximize' tool button and allow the user to maximize the window, false to hide the button
       * and disallow maximizing the window (defaults to false).  Note that when a window is maximized, the tool button
       * will automatically change to a 'restore' button with the appropriate behavior already built-in that will
       * restore the window to its previous size.
       */
      maximizable : false,
      /**
       * @cfg {Number} minHeight
       * The minimum height in pixels allowed for this window (defaults to 100).  Only applies when resizable = true.
       */
      minHeight: 100,
      /**
       * @cfg {Number} minWidth
       * The minimum width in pixels allowed for this window (defaults to 200).  Only applies when resizable = true.
       */
      minWidth: 200,
      /**
       * @cfg {Boolean} expandOnShow
       * True to always expand the window when it is displayed, false to keep it in its current state (which may be
       * {@link #collapsed}) when displayed (defaults to true).
       */
      expandOnShow: true,
      /**
       * @cfg {String} closeAction
       * The action to take when the close button is clicked.  The default action is 'close' which will actually remove
       * the window from the DOM and destroy it.  The other valid option is 'hide' which will simply hide the window
       * by setting visibility to hidden and applying negative offsets, keeping the window available to be redisplayed
       * via the {@link #show} method.
       */
      closeAction: 'close',
      /**
       * @cfg {String} elements
       * A comma-delimited list of panel elements to initialize when the window is rendered.  Normally, this list will be
       * generated automatically based on the items added to the window at config time, but sometimes it might be useful to
       * make sure a structural element is rendered even if not specified at config time (for example, you may want
       * to add a button or toolbar dynamically after the window has been rendered).  Adding those elements to this
       * list will allocate the required placeholders in the window when it is rendered.  Valid values are<ul>
       * <li><b>header</b> (required)</li>
       * <li><b>tbar</b> (top bar)</li>
       * <li><b>body</b> (required)</li>
       * <li><b>bbar</b> (bottom bar)</li>
       * <li><b>footer</b><li>
       * </ul>
       * Defaults to 'header,body'.
       */
      elements: 'header,body',
  
      // inherited docs, same default
      collapsible:false,
  
      // private
      initHidden : true,
      /**
      * @cfg {Boolean} monitorResize @hide
      * This is automatically managed based on the value of constrain and constrainToHeader
      */
      monitorResize : true,
      /** @cfg {Boolean} frame @hide */
      frame:true,
      /** @cfg {Boolean} floating @hide */
      floating:true,
  
      // private
      initComponent : function(){
          Ext.Window.superclass.initComponent.call(this);
          this.addEvents(
              /**
               * @event activate
               * Fires after the window has been visually activated via {@link setActive}.
               * @param {Ext.Window} this
               */
              /**
               * @event deactivate
               * Fires after the window has been visually deactivated via {@link setActive}.
               * @param {Ext.Window} this
               */
              /**
               * @event resize
               * Fires after the window has been resized.
               * @param {Ext.Window} this
               * @param {Number} width The window's new width
               * @param {Number} height The window's new height
               */
              'resize',
              /**
               * @event maximize
               * Fires after the window has been maximized.
               * @param {Ext.Window} this
               */
              'maximize',
              /**
               * @event minimize
               * Fires after the window has been minimized.
               * @param {Ext.Window} this
               */
              'minimize',
              /**
               * @event restore
               * Fires after the window has been restored to its original size after being maximized.
               * @param {Ext.Window} this
               */
              'restore'
          );
      },
  
      // private
      getState : function(){
          return Ext.apply(Ext.Window.superclass.getState.call(this) || {}, this.getBox());
      },
  
      // private
      onRender : function(ct, position){
          Ext.Window.superclass.onRender.call(this, ct, position);
  
          if(this.plain){
              this.el.addClass('x-window-plain');
          }
  
          // this element allows the Window to be focused for keyboard events
          this.focusEl = this.el.createChild({
                      tag: "a", href:"#", cls:"x-dlg-focus",
                      tabIndex:"-1", html: "&#160;"});
          this.focusEl.swallowEvent('click', true);
  
          this.proxy = this.el.createProxy("x-window-proxy");
          this.proxy.enableDisplayMode('block');
  
          if(this.modal){
              this.mask = this.container.createChild({cls:"ext-el-mask"}, this.el.dom);
              this.mask.enableDisplayMode("block");
              this.mask.hide();
              this.mask.on('click', this.focus, this);
          }
      },
  
      // private
      initEvents : function(){
          Ext.Window.superclass.initEvents.call(this);
          if(this.animateTarget){
              this.setAnimateTarget(this.animateTarget);
          }
  
          if(this.resizable){
              this.resizer = new Ext.Resizable(this.el, {
                  minWidth: this.minWidth,
                  minHeight:this.minHeight,
                  handles: this.resizeHandles || "all",
                  pinned: true,
                  resizeElement : this.resizerAction
              });
              this.resizer.window = this;
              this.resizer.on("beforeresize", this.beforeResize, this);
          }
  
          if(this.draggable){
              this.header.addClass("x-window-draggable");
          }
          this.initTools();
  
          this.el.on("mousedown", this.toFront, this);
          this.manager = this.manager || Ext.WindowMgr;
          this.manager.register(this);
          this.hidden = true;
          if(this.maximized){
              this.maximized = false;
              this.maximize();
          }
          if(this.closable){
              var km = this.getKeyMap();
              km.on(27, this.onEsc, this);
              km.disable();
          }
      },
  
      initDraggable : function(){
          /**
           * If this Window is configured {@link #draggable}, this property will contain
           * an instance of {@link Ext.dd.DD} which handles dragging the Window's DOM Element.
           * @type Ext.dd.DD
           * @property dd
           */
          this.dd = new Ext.Window.DD(this);
      },
  
     // private
      onEsc : function(){
          this[this.closeAction]();
      },
  
      // private
      beforeDestroy : function(){
          this.hide();
          if(this.doAnchor){
              Ext.EventManager.removeResizeListener(this.doAnchor, this);
              Ext.EventManager.un(window, 'scroll', this.doAnchor, this);
          }
          Ext.destroy(
              this.focusEl,
              this.resizer,
              this.dd,
              this.proxy,
              this.mask
          );
          Ext.Window.superclass.beforeDestroy.call(this);
      },
  
      // private
      onDestroy : function(){
          if(this.manager){
              this.manager.unregister(this);
          }
          Ext.Window.superclass.onDestroy.call(this);
      },
  
      // private
      initTools : function(){
          if(this.minimizable){
              this.addTool({
                  id: 'minimize',
                  handler: this.minimize.createDelegate(this, [])
              });
          }
          if(this.maximizable){
              this.addTool({
                  id: 'maximize',
                  handler: this.maximize.createDelegate(this, [])
              });
              this.addTool({
                  id: 'restore',
                  handler: this.restore.createDelegate(this, []),
                  hidden:true
              });
              this.header.on('dblclick', this.toggleMaximize, this);
          }
          if(this.closable){
              this.addTool({
                  id: 'close',
                  handler: this[this.closeAction].createDelegate(this, [])
              });
          }
      },
  
      // private
      resizerAction : function(){
          var box = this.proxy.getBox();
          this.proxy.hide();
          this.window.handleResize(box);
          return box;
      },
  
      // private
      beforeResize : function(){
          this.resizer.minHeight = Math.max(this.minHeight, this.getFrameHeight() + 40); // 40 is a magic minimum content size?
          this.resizer.minWidth = Math.max(this.minWidth, this.getFrameWidth() + 40);
          this.resizeBox = this.el.getBox();
      },
  
      // private
      updateHandles : function(){
          if(Ext.isIE && this.resizer){
              this.resizer.syncHandleHeight();
              this.el.repaint();
          }
      },
  
      // private
      handleResize : function(box){
          var rz = this.resizeBox;
          if(rz.x != box.x || rz.y != box.y){
              this.updateBox(box);
          }else{
              this.setSize(box);
          }
          this.focus();
          this.updateHandles();
          this.saveState();
          if(this.layout){
              this.doLayout();
          }
          this.fireEvent("resize", this, box.width, box.height);
      },
  
      /**
       * Focuses the window.  If a defaultButton is set, it will receive focus, otherwise the
       * window itself will receive focus.
       */
      focus : function(){
          var f = this.focusEl, db = this.defaultButton, t = typeof db;
          if(t != 'undefined'){
              if(t == 'number'){
                  f = this.buttons[db];
              }else if(t == 'string'){
                  f = Ext.getCmp(db);
              }else{
                  f = db;
              }
          }
          f.focus.defer(10, f);
      },
  
      /**
       * Sets the target element from which the window should animate while opening.
       * @param {String/Element} el The target element or id
       */
      setAnimateTarget : function(el){
          el = Ext.get(el);
          this.animateTarget = el;
      },
  
      // private
      beforeShow : function(){
          delete this.el.lastXY;
          delete this.el.lastLT;
          if(this.x === undefined || this.y === undefined){
              var xy = this.el.getAlignToXY(this.container, 'c-c');
              var pos = this.el.translatePoints(xy[0], xy[1]);
              this.x = this.x === undefined? pos.left : this.x;
              this.y = this.y === undefined? pos.top : this.y;
          }
          this.el.setLeftTop(this.x, this.y);
  
          if(this.expandOnShow){
              this.expand(false);
          }
  
          if(this.modal){
              Ext.getBody().addClass("x-body-masked");
              this.mask.setSize(Ext.lib.Dom.getViewWidth(true), Ext.lib.Dom.getViewHeight(true));
              this.mask.show();
          }
      },
  
      /**
       * Shows the window, rendering it first if necessary, or activates it and brings it to front if hidden.
       * @param {String/Element} animateTarget (optional) The target element or id from which the window should
       * animate while opening (defaults to undefined with no animation)
       * @param {Function} callback (optional) A callback function to call after the window is displayed
       * @param {Object} scope (optional) The scope in which to execute the callback
       */
      show : function(animateTarget, cb, scope){
          if(!this.rendered){
              this.render(Ext.getBody());
          }
          if(this.hidden === false){
              this.toFront();
              return;
          }
          if(this.fireEvent("beforeshow", this) === false){
              return;
          }
          if(cb){
              this.on('show', cb, scope, {single:true});
          }
          this.hidden = false;
          if(animateTarget !== undefined){
              this.setAnimateTarget(animateTarget);
          }
          this.beforeShow();
          if(this.animateTarget){
              this.animShow();
          }else{
              this.afterShow();
          }
      },
  
      // private
      afterShow : function(){
          this.proxy.hide();
          this.el.setStyle('display', 'block');
          this.el.show();
          if(this.maximized){
              this.fitContainer();
          }
          if(Ext.isMac && Ext.isGecko){ // work around stupid FF 2.0/Mac scroll bar bug
          	this.cascade(this.setAutoScroll);
          }
  
          if(this.monitorResize || this.modal || this.constrain || this.constrainHeader){
              Ext.EventManager.onWindowResize(this.onWindowResize, this);
          }
          this.doConstrain();
          if(this.layout){
              this.doLayout();
          }
          if(this.keyMap){
              this.keyMap.enable();
          }
          this.toFront();
          this.updateHandles();
          this.fireEvent("show", this);
      },
  
      // private
      animShow : function(){
          this.proxy.show();
          this.proxy.setBox(this.animateTarget.getBox());
          this.proxy.setOpacity(0);
          var b = this.getBox(false);
          b.callback = this.afterShow;
          b.scope = this;
          b.duration = .25;
          b.easing = 'easeNone';
          b.opacity = .5;
          b.block = true;
          this.el.setStyle('display', 'none');
          this.proxy.shift(b);
      },
  
      /**
       * Hides the window, setting it to invisible and applying negative offsets.
       * @param {String/Element} animateTarget (optional) The target element or id to which the window should
       * animate while hiding (defaults to null with no animation)
       * @param {Function} callback (optional) A callback function to call after the window is hidden
       * @param {Object} scope (optional) The scope in which to execute the callback
       */
      hide : function(animateTarget, cb, scope){
          if(this.activeGhost){ // drag active?
              this.hide.defer(100, this, [animateTarget, cb, scope]);
              return;
          }
          if(this.hidden || this.fireEvent("beforehide", this) === false){
              return;
          }
          if(cb){
              this.on('hide', cb, scope, {single:true});
          }
          this.hidden = true;
          if(animateTarget !== undefined){
              this.setAnimateTarget(animateTarget);
          }
          if(this.animateTarget){
              this.animHide();
          }else{
              this.el.hide();
              this.afterHide();
          }
      },
  
      // private
      afterHide : function(){
          this.proxy.hide();
          if(this.monitorResize || this.modal || this.constrain || this.constrainHeader){
              Ext.EventManager.removeResizeListener(this.onWindowResize, this);
          }
          if(this.modal){
              this.mask.hide();
              Ext.getBody().removeClass("x-body-masked");
          }
          if(this.keyMap){
              this.keyMap.disable();
          }
          this.fireEvent("hide", this);
      },
  
      // private
      animHide : function(){
          this.proxy.setOpacity(.5);
          this.proxy.show();
          var tb = this.getBox(false);
          this.proxy.setBox(tb);
          this.el.hide();
          var b = this.animateTarget.getBox();
          b.callback = this.afterHide;
          b.scope = this;
          b.duration = .25;
          b.easing = 'easeNone';
          b.block = true;
          b.opacity = 0;
          this.proxy.shift(b);
      },
  
      // private
      onWindowResize : function(){
          if(this.maximized){
              this.fitContainer();
          }
          if(this.modal){
              this.mask.setSize('100%', '100%');
              var force = this.mask.dom.offsetHeight;
              this.mask.setSize(Ext.lib.Dom.getViewWidth(true), Ext.lib.Dom.getViewHeight(true));
          }
          this.doConstrain();
      },
  
      // private
      doConstrain : function(){
          if(this.constrain || this.constrainHeader){
              var offsets;
              if(this.constrain){
                  offsets = {
                      right:this.el.shadowOffset,
                      left:this.el.shadowOffset,
                      bottom:this.el.shadowOffset
                  };
              }else {
                  var s = this.getSize();
                  offsets = {
                      right:-(s.width - 100),
                      bottom:-(s.height - 25)
                  };
              }
  
              var xy = this.el.getConstrainToXY(this.container, true, offsets);
              if(xy){
                  this.setPosition(xy[0], xy[1]);
              }
          }
      },
  
      // private - used for dragging
      ghost : function(cls){
          var ghost = this.createGhost(cls);
          var box = this.getBox(true);
          ghost.setLeftTop(box.x, box.y);
          ghost.setWidth(box.width);
          this.el.hide();
          this.activeGhost = ghost;
          return ghost;
      },
  
      // private
      unghost : function(show, matchPosition){
          if(show !== false){
              this.el.show();
              this.focus();
  	        if(Ext.isMac && Ext.isGecko){ // work around stupid FF 2.0/Mac scroll bar bug
  	        	this.cascade(this.setAutoScroll);
  	        }
          }
          if(matchPosition !== false){
              this.setPosition(this.activeGhost.getLeft(true), this.activeGhost.getTop(true));
          }
          this.activeGhost.hide();
          this.activeGhost.remove();
          delete this.activeGhost;
      },
  
      /**
       * Placeholder method for minimizing the window.  By default, this method simply fires the {@link #minimize} event
       * since the behavior of minimizing a window is application-specific.  To implement custom minimize behavior,
       * either the minimize event can be handled or this method can be overridden.
       */
      minimize : function(){
          this.fireEvent('minimize', this);
      },
  
      /**
       * Closes the window, removes it from the DOM and destroys the window object.  The beforeclose event is fired
       * before the close happens and will cancel the close action if it returns false.
       */
      close : function(){
          if(this.fireEvent("beforeclose", this) !== false){
              this.hide(null, function(){
                  this.fireEvent('close', this);
                  this.destroy();
              }, this);
          }
      },
  
      /**
       * Fits the window within its current container and automatically replaces the 'maximize' tool button with
       * the 'restore' tool button.
       */
      maximize : function(){
          if(!this.maximized){
              this.expand(false);
              this.restoreSize = this.getSize();
              this.restorePos = this.getPosition(true);
              if (this.maximizable){
                  this.tools.maximize.hide();
                  this.tools.restore.show();
              }
              this.maximized = true;
              this.el.disableShadow();
  
              if(this.dd){
                  this.dd.lock();
              }
              if(this.collapsible){
                  this.tools.toggle.hide();
              }
              this.el.addClass('x-window-maximized');
              this.container.addClass('x-window-maximized-ct');
  
              this.setPosition(0, 0);
              this.fitContainer();
              this.fireEvent('maximize', this);
          }
      },
  
      /**
       * Restores a maximized window back to its original size and position prior to being maximized and also replaces
       * the 'restore' tool button with the 'maximize' tool button.
       */
      restore : function(){
          if(this.maximized){
              this.el.removeClass('x-window-maximized');
              this.tools.restore.hide();
              this.tools.maximize.show();
              this.setPosition(this.restorePos[0], this.restorePos[1]);
              this.setSize(this.restoreSize.width, this.restoreSize.height);
              delete this.restorePos;
              delete this.restoreSize;
              this.maximized = false;
              this.el.enableShadow(true);
  
              if(this.dd){
                  this.dd.unlock();
              }
              if(this.collapsible){
                  this.tools.toggle.show();
              }
              this.container.removeClass('x-window-maximized-ct');
  
              this.doConstrain();
              this.fireEvent('restore', this);
          }
      },
  
      /**
       * A shortcut method for toggling between {@link #maximize} and {@link #restore} based on the current maximized
       * state of the window.
       */
      toggleMaximize : function(){
          this[this.maximized ? 'restore' : 'maximize']();
      },
  
      // private
      fitContainer : function(){
          var vs = this.container.getViewSize();
          this.setSize(vs.width, vs.height);
      },
  
      // private
      // z-index is managed by the WindowManager and may be overwritten at any time
      setZIndex : function(index){
          if(this.modal){
              this.mask.setStyle("z-index", index);
          }
          this.el.setZIndex(++index);
          index += 5;
  
          if(this.resizer){
              this.resizer.proxy.setStyle("z-index", ++index);
          }
  
          this.lastZIndex = index;
      },
  
      /**
       * Aligns the window to the specified element
       * @param {Mixed} element The element to align to.
       * @param {String} position The position to align to (see {@link Ext.Element#alignTo} for more details).
       * @param {Array} offsets (optional) Offset the positioning by [x, y]
       * @return {Ext.Window} this
       */
      alignTo : function(element, position, offsets){
          var xy = this.el.getAlignToXY(element, position, offsets);
          this.setPagePosition(xy[0], xy[1]);
          return this;
      },
  
      /**
       * Anchors this window to another element and realigns it when the window is resized or scrolled.
       * @param {Mixed} element The element to align to.
       * @param {String} position The position to align to (see {@link Ext.Element#alignTo} for more details)
       * @param {Array} offsets (optional) Offset the positioning by [x, y]
       * @param {Boolean/Number} monitorScroll (optional) true to monitor body scroll and reposition. If this parameter
       * is a number, it is used as the buffer delay (defaults to 50ms).
       * @return {Ext.Window} this
       */
      anchorTo : function(el, alignment, offsets, monitorScroll){
        if(this.doAnchor){
            Ext.EventManager.removeResizeListener(this.doAnchor, this);
            Ext.EventManager.un(window, 'scroll', this.doAnchor, this);
        }
        this.doAnchor = function(){
            this.alignTo(el, alignment, offsets);
        };
        Ext.EventManager.onWindowResize(this.doAnchor, this);
        
        var tm = typeof monitorScroll;
        if(tm != 'undefined'){
            Ext.EventManager.on(window, 'scroll', this.doAnchor, this,
                {buffer: tm == 'number' ? monitorScroll : 50});
        }
        this.doAnchor();
        return this;
      },
  
      /**
       * Brings this window to the front of any other visible windows
       * @return {Ext.Window} this
       */
      toFront : function(e){
          if(this.manager.bringToFront(this)){
              if(!e || !e.getTarget().focus){
                  this.focus();
              }
          }
          return this;
      },
  
      /**
       * Makes this the active window by showing its shadow, or deactivates it by hiding its shadow.  This method also
       * fires the {@link #activate} or {@link #deactivate} event depending on which action occurred.
       * @param {Boolean} active True to activate the window, false to deactivate it (defaults to false)
       */
      setActive : function(active){
          if(active){
              if(!this.maximized){
                  this.el.enableShadow(true);
              }
              this.fireEvent('activate', this);
          }else{
              this.el.disableShadow();
              this.fireEvent('deactivate', this);
          }
      },
  
      /**
       * Sends this window to the back of (lower z-index than) any other visible windows
       * @return {Ext.Window} this
       */
      toBack : function(){
          this.manager.sendToBack(this);
          return this;
      },
  
      /**
       * Centers this window in the viewport
       * @return {Ext.Window} this
       */
      center : function(){
          var xy = this.el.getAlignToXY(this.container, 'c-c');
          this.setPagePosition(xy[0], xy[1]);
          return this;
      }
  
      /**
       * @cfg {Boolean} autoWidth @hide
       **/
  });
  Ext.reg('window', Ext.Window);
  
  // private - custom Window DD implementation
  Ext.Window.DD = function(win){
      this.win = win;
      Ext.Window.DD.superclass.constructor.call(this, win.el.id, 'WindowDD-'+win.id);
      this.setHandleElId(win.header.id);
      this.scroll = false;
  };
  
  Ext.extend(Ext.Window.DD, Ext.dd.DD, {
      moveOnly:true,
      headerOffsets:[100, 25],
      startDrag : function(){
          var w = this.win;
          this.proxy = w.ghost();
          if(w.constrain !== false){
              var so = w.el.shadowOffset;
              this.constrainTo(w.container, {right: so, left: so, bottom: so});
          }else if(w.constrainHeader !== false){
              var s = this.proxy.getSize();
              this.constrainTo(w.container, {right: -(s.width-this.headerOffsets[0]), bottom: -(s.height-this.headerOffsets[1])});
          }
      },
      b4Drag : Ext.emptyFn,
  
      onDrag : function(e){
          this.alignElWithMouse(this.proxy, e.getPageX(), e.getPageY());
      },
  
      endDrag : function(e){
          this.win.unghost();
          this.win.saveState();
      }
  });
  