/**
 * @class Ext.Window
 * @extends Ext.Panel
 *

A specialized panel intended for use as an application window.  Windows are floated, {@link #resizable}, and
 * {@link #draggable} by default.  Windows can be {@link #maximizable maximized} to fill the viewport,
 * restored to their prior size, and can be {@link #minimize}d.


 *

Windows can also be linked to a {@link Ext.WindowGroup} or managed by the {@link Ext.WindowMgr} to provide
 * grouping, activation, to front, to back and other application-specific behavior.


 *

By default, Windows will be rendered to document.body. To {@link #constrain} a Window to another element
 * specify {@link Ext.Component#renderTo renderTo}.


 *

Note: By default, the {@link #closable close} header tool destroys the Window resulting in
 * destruction of any child Components. This makes the Window object, and all its descendants
unusable. To enable
 * re-use of a Window, use
{@link #closeAction closeAction: 'hide'}.


 * @constructor
 * @param {Object} config The config object
 * @xtype window
 */

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
collapsed 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
     *

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 (defaults to true).


     *

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
{@link Ext.Component#destroy destroy} the Window and its content meaning that
     * it may not be reused.


     *

To make closing a Window hide the Window so that it may be reused, set
     * {@link #closeAction} to 'hide'.
     */

    closable
: true,
   

/**
     * @cfg {String} closeAction
     *

The action to take when the close header tool is clicked:
     *


     *

Note: This setting does not affect the {@link #close} method
     * which will always {@link Ext.Component#destroy destroy} the window. To
     * programatically
hide a window, call {@link #hide}.


     */

    closeAction
: 'close',
   
/**
     * @cfg {Boolean} constrain
     * True to constrain the window within its containing element, false to allow it to fall outside of its
     * containing element. By default the window will be rendered to document.body.  To render and constrain the
     * window within another element specify {@link #renderTo}.
     * (defaults to false).  Optionally the header only can be constrained using {@link #constrainHeader}.
     */

    constrain
: false,
   
/**
     * @cfg {Boolean} constrainHeader
     * True to constrain the window header within its containing element (allowing the window body to fall outside
     * of its containing element) or false to allow the header to fall outside its containing element (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,

   
// inherited docs, same default
    collapsible
: false,

   
/**
     * @cfg {Boolean} initHidden
     * True to hide the window until show() is explicitly called (defaults to true).
     */

    initHidden
: true,
   
/**
    * @cfg {Boolean} monitorResize @hide
    * This is automatically managed based on the value of constrain and constrainToHeader
    */

    monitorResize
: true,

   
// The following configs are set to provide the basic functionality of a window.
   
// Changing them would require additional code to handle correctly and should
   
// usually only be done in subclasses that can provide custom behavior.  Changing them
   
// may have unexpected or undesirable results.
   
/** @cfg {String} elements @hide */
    elements
: 'header,body',
   
/** @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'
       
);
       
if(this.initHidden === false){
           
this.show();
       
}else{
           
this.hidden = true;
       
}
   
},

   
// private
    getState
: function(){
       
return Ext.apply(Ext.Window.superclass.getState.call(this) || {}, this.getBox(true));
   
},

   
// 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: ' '});
       
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.mon(this.mask, 'click', this.focus, this);
       
}
       
this.initTools();
   
},

   
// 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.mon(this.resizer, 'beforeresize', this.beforeResize, this);
       
}

       
if(this.draggable){
           
this.header.addClass('x-window-draggable');
       
}
       
this.mon(this.el, 'mousedown', this.toFront, this);
       
this.manager = this.manager || Ext.WindowMgr;
       
this.manager.register(this);
       
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(){
       
if (this.rendered){
           
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.mon(this.header, '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();
       
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' && this.fbar){
                f
= this.fbar.items.get(db);
           
}else if(t == 'string'){
                f
= Ext.getCmp(db);
           
}else{
                f
= db;
           
}
       
}
        f
= f || this.focusEl;
        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 null 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
     * @return {Ext.Window} this
     */

    show
: function(animateTarget, cb, scope){
       
if(!this.rendered){
           
this.render(Ext.getBody());
       
}
       
if(this.hidden === false){
           
this.toFront();
           
return this;
       
}
       
if(this.fireEvent('beforeshow', this) === false){
           
return this;
       
}
       
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();
       
}
       
return this;
   
},

   
// private
    afterShow
: function(isAnim){
       
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();
       
this.doLayout();
       
if(this.keyMap){
           
this.keyMap.enable();
       
}
       
this.toFront();
       
this.updateHandles();
       
if(isAnim && (Ext.isIE || Ext.isWebKit)){
           
var sz = this.getSize();
           
this.onResize(sz.width, sz.height);
       
}
       
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.createDelegate(this, [true], false);
        b
.scope = this;
        b
.duration = 0.25;
        b
.easing = 'easeNone';
        b
.opacity = 0.5;
        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
     * @return {Ext.Window} this
     */

    hide
: function(animateTarget, cb, scope){
       
if(this.hidden || this.fireEvent('beforehide', this) === false){
           
return this;
       
}
       
if(cb){
           
this.on('hide', cb, scope, {single:true});
       
}
       
this.hidden = true;
       
if(animateTarget !== undefined){
           
this.setAnimateTarget(animateTarget);
       
}
       
if(this.modal){
           
this.mask.hide();
           
Ext.getBody().removeClass('x-body-masked');
       
}
       
if(this.animateTarget){
           
this.animHide();
       
}else{
           
this.el.hide();
           
this.afterHide();
       
}
       
return this;
   
},

   
// private
    afterHide
: function(){
       
this.proxy.hide();
       
if(this.monitorResize || this.modal || this.constrain || this.constrainHeader){
           
Ext.EventManager.removeResizeListener(this.onWindowResize, this);
       
}
       
if(this.keyMap){
           
this.keyMap.disable();
       
}
       
this.fireEvent('hide', this);
   
},

   
// private
    animHide
: function(){
       
this.proxy.setOpacity(0.5);
       
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 = 0.25;
        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(!this.activeGhost) {
           
return;
       
}
       
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.
     * @return {Ext.Window} this
     */

    minimize
: function(){
       
this.fireEvent('minimize', this);
       
return this;
   
},

   
/**
     *

Closes the Window, removes it from the DOM, {@link Ext.Component#destroy destroy}s
     * the Window object and all its descendant Components. The {@link Ext.Panel#beforeclose beforeclose}
     * event is fired before the close happens and will cancel the close action if it returns false.


     *

Note: This method is not affected by the {@link #closeAction} setting which
     * only affects the action triggered when clicking the {@link #closable 'close' tool in the header}.
     * To hide the Window without destroying it, call {@link #hide}.


     */

    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 {@link #maximizable 'maximize' tool button} with the 'restore' tool button.
     * Also see {@link #toggleMaximize}.
     * @return {Ext.Window} this
     */

    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);
       
}
       
return this;
   
},

   
/**
     * Restores a {@link #maximizable 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.
     * Also see {@link #toggleMaximize}.
     * @return {Ext.Window} this
     */

    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);
       
}
       
return this;
   
},

   
/**
     * A shortcut method for toggling between {@link #maximize} and {@link #restore} based on the current maximized
     * state of the window.
     * @return {Ext.Window} this
     */

    toggleMaximize
: function(){
       
return 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
     * @param {Boolean} e (optional) Specify
false to prevent the window from being focused.
     * @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();
   
}
});