// ******************************* Bugs fix ***********************************

Ext.override(Ext.chart.Chart, {
	onDestroy: function(){
		this.bindStore(null);
		var tip = this.tipFnName;
		if(!Ext.isEmpty(tip)){
			delete window[tip];
		}
		Ext.chart.Chart.superclass.onDestroy.call(this);
	}
});

Ext.override(Ext.form.TextField,{
	autoSize : function(){
        if(!this.grow || !this.rendered){
            return;
        }
        if(!this.metrics){
            this.metrics = Ext.util.TextMetrics.createInstance(this.el);
        }
        var el = this.el;
        var v = el.dom.value;
        var d = document.createElement('div');
        d.appendChild(document.createTextNode(v));
        v = d.innerHTML;
        Ext.removeNode(d);
		d = null;
        v += ' ';
        var w = Math.min(this.growMax, Math.max(this.metrics.getWidth(v) + /* add extra padding */ 10, this.growMin));
        this.el.setWidth(w);
        this.fireEvent('autosize', this, w);
    }
});

Ext.override(Ext.Component, {
	onRender : function(ct, position){
        if(!this.el && this.autoEl){
            if(Ext.isString(this.autoEl)){
                this.el = document.createElement(this.autoEl);
            }else{
                var div = document.createElement('div');
                Ext.DomHelper.overwrite(div, this.autoEl);
                this.el = div.firstChild;
            }
            if (!this.el.id) {
                this.el.id = this.getId();
            }
        }
        if(this.el){
            this.el = Ext.get(this.el);
            if(this.allowDomMove !== false){
                ct.dom.insertBefore(this.el.dom, position);
                if (div) {
                    Ext.removeNode(div);
                    div = null;
                }
            }
        }
    }
});
// ************************* improve **********************

(function(){
	Ext.util.TextMetrics.Instance = function(bindTo, fixedWidth){
		var ml = new Ext.Element(document.createElement('div'));
		document.body.appendChild(ml.dom);
		ml.position('absolute');
		ml.setLeftTop(-1000, -1000);
		ml.hide();

		if(fixedWidth){
			ml.setWidth(fixedWidth);
		}

		var instance = {
			getSize : function(text){
				ml.update(text);
				var s = ml.getSize();
				ml.update('');
				return s;
			},
			bind : function(el){
				ml.setStyle(
					Ext.fly(el).getStyles('font-size','font-style', 'font-weight', 'font-family','line-height', 'text-transform', 'letter-spacing')
				);
			},
			setFixedWidth : function(width){
				ml.setWidth(width);
			},
			getWidth : function(text){
				ml.dom.style.width = 'auto';
				return this.getSize(text).width;
			},
			getHeight : function(text){
				return this.getSize(text).height;
			},
			// Add by clue
			destroy	:	function(){
				Ext.destroy(ml);
				delete ml;
			}
		};

		instance.bind(bindTo);

		return instance;
	};
})();
// ******************************* Memory Release *****************************

Ext.override(Ext.Component,{ 
	onDestroy	:	function(){ 
		if(this.plugins){
			Ext.destroy(this.plugins);
		}
		Ext.destroy(this.el);
	}
});

Ext.override(Ext.Panel,{
    onDestroy : function(){
		Ext.destroy(
            this.header,
            this.tbar,
            this.bbar,
            this.footer,
            this.body,
            this.bwrap,
			this.dd
        );
		Ext.Panel.superclass.onDestroy.call(this);
    }
});

Ext.override(Ext.dd.DragDrop,{ 
	onDestroy	:	Ext.emptyFn,
	destroy : function(){
		this.onDestroy();
        this.unreg();
    }
});

Ext.override(Ext.dd.DragSource,{ 
	onDestroy	:	function(){
		Ext.destroy(this.proxy);
		Ext.dd.DragSource.superclass.onDestroy.call(this);
	}
});

Ext.override(Ext.grid.GridDragZone,{
	onDestroy	:	function(){
		Ext.destroy(this.ddel);
		Ext.grid.GridDragZone.superclass.onDestroy.call(this);
	}
});

Ext.override(Ext.dd.StatusProxy,{ 
	onDestroy	:	Ext.emptyFn,
	destroy : function(){
		this.onDestroy();
		Ext.destroy(this.anim,this.el,this.ghost);
    }
});

Ext.override(Ext.grid.GridView,{
	destroy : function(){
        if(this.colMenu){
            Ext.menu.MenuMgr.unregister(this.colMenu);
            this.colMenu.destroy();
        }
        if(this.hmenu){
            Ext.menu.MenuMgr.unregister(this.hmenu);
            this.hmenu.destroy();
        }
		this.initData(null, null);
        this.purgeListeners();

        if(this.grid.enableColumnMove){
			delete Ext.dd.DDM.locationCache[this.columnDrag.id];
			Ext.destroy(this.columnDrag,this.columnDrop);
        }

        Ext.fly(this.innerHd).removeAllListeners();
        Ext.removeNode(this.innerHd);

		Ext.destroy(
            this.el,
            this.mainWrap,
            this.mainHd,
            this.scroller,
            this.mainBody,
            this.focusEl,
            this.resizeMarker,
            this.resizeProxy,
            this.activeHdBtn,
            this.dragZone,
            this.splitZone,
            this._flyweight
        );
        Ext.EventManager.removeResizeListener(this.onWindowResize, this);
    }
});

Ext.override(Ext.tree.TreePanel,{ 
	onDestroy : function(){
        if(this.rendered){
            this.body.removeAllListeners();
            Ext.dd.ScrollManager.unregister(this.body);
			Ext.destroy(this.dropZone,this.dragZone,this.innerCt);
        }
        Ext.destroy(this.root);
        Ext.tree.TreePanel.superclass.onDestroy.call(this);
    }
});

Ext.override(Ext.grid.HeaderDropZone,{ 
	onDestroy	:	function(){
		Ext.destroy(this.proxyTop,this.proxyBottom);
		Ext.grid.HeaderDropZone.superclass.onDestroy.call(this);
	}
});

Ext.override(Ext.menu.Menu,{
	onDestroy : function(){
        Ext.destroy(this.el);
        Ext.menu.MenuMgr.unregister(this);
        Ext.EventManager.removeResizeListener(this.hide, this);
        if(this.keyNav) {
            this.keyNav.disable();
        }
        var s = this.scroller;
        if(s){
            Ext.destroy(s.topRepeater, s.bottomRepeater, s.top, s.bottom);
        }
		this.purgeListeners();
		Ext.menu.Menu.superclass.onDestroy.call(this);
    }
});

Ext.override(Ext.TabPanel,{ // Ext.Panel
	onDestroy	:	function(){
		Ext.destroy(
			this.stack,
			this.stripWrap,
			this.stripSpacer,
			this.strip,
			this.edge,
			this.leftRepeater,
			this.rightRepeater
		);
		Ext.TabPanel.superclass.onDestroy.call(this);
	}
});

Ext.override(Ext.layout.ColumnLayout,{ 
	destroy	:	function(){
		Ext.destroy(this.innerCt);
	}
});

Ext.override(Ext.form.Field,{ 
	onDestroy	:	function(){
		Ext.destroy(this.errorEl,this.errorIcon);
		Ext.form.Field.superclass.onDestroy.call(this);
	}
});

Ext.override(Ext.form.TextField,{
	onDestroy	:	function(){
		Ext.destroy(this.metrics);
		if(this.validationTask){
			this.validationTask.cancel();
			this.validationTask = null;
		}
		Ext.form.TextField.superclass.onDestroy.call(this);
	}
});