var YzPanel=function(bHasShadow) { this.window=window.top; var doc=this.window.document; var panelFrame=doc.createElement("IFRAME"); with(panelFrame) { id="YzPanelIFrame_"+Yz.util.newGuid(); src="JavaScript:;"; frameBorder="0"; scrolling="no"; style.position="absolute"; style.zIndex=5000; width=0; height=0; unselectable="on"; allowTransparency=true; } doc.body.appendChild(panelFrame); var panelWin=panelFrame.contentWindow; var panelDoc=panelWin.document; panelDoc.open(); panelDoc.write('

<\/body><\/html>'); panelDoc.close(); panelDoc.oncontextmenu=Yz.util.cancelEvent; //这句很重要，如果没有在firefox下不指定width和height的情况下 //显示不出来,例如context menu的使用就遇到了这个问题 panelDoc.body.firstChild.style.cssFloat='left'; if(Yz.isIE) { panelFrame.onfocus=panel_onfocus; panelFrame.onblur=panel_onblur; } else { panelFrame.contentWindow.onfocus=panel_onfocus; panelFrame.contentWindow.onblur=panel_onblur; } this.reference=0; this.hasFocus=false; this.opened=false; this.frameId=panelFrame.id; Yz.instance.add(this); panelFrame.panelId=this.handle; panelFrame.panelHandle=this.handle; panelFrame.unselectable="on"; if(bHasShadow) { //create the shadow var shadow=this.window.document.createElement("div"),shadowId="YzPanelShadow_"+Yz.util.newGuid(); shadow.style.position="absolute"; shadow.style.backgroundColor=Yz.isIE ? "black" : "gray"; shadow.style.zIndex=panelFrame.style.zIndex-1; if(Yz.isIE) shadow.style.filter="progid:DXImageTransform.Microsoft.alpha(opacity=35) progid:DXImageTransform.Microsoft.Blur(pixelradius=3)"; else shadow.style.opacity=0.30; shadow.style.display="none"; shadow.id=shadowId; this.window.document.body.appendChild(shadow); this.shadowId=shadowId; shadow=null; } doc=null; panelWin=null; panelDoc=null; panelFrame=null; } Yz.panel=YzPanel; YzPanel.fromHandle=function(handle){return Yz.instance.get(handle);} YzPanel.prototype= { show : function(x,y,w,h,relElement,comboboxHeight) { var winTop=window.top; if(this.parentId){YzPanel.fromHandle(this.parentId).lock();} var frame=winTop.document.getElementById(this.frameId); var body=frame.contentWindow.document.body.firstChild; body.style.width = w ? w + 'px' : '' ; body.style.height = h ? h + 'px' : '' ; var mainWidth = body.offsetWidth ; if (!w){frame.width=1;} if(!h){frame.height=1;} mainWidth = body.offsetWidth || body.firstChild.offsetWidth; var relEltWin=Yz.util.getElementWindow(relElement); //if(relElement.tagName!="BODY" && relEltWin!=window.top) //{ var pos=Yz.util.getElementPosition(relElement,winTop); x += pos.X ; y += pos.Y ; //} var scr=Yz.util.getScrollPosition(winTop); var vs=Yz.util.getViewPaneSize(winTop); var iViewPaneHeight = vs.Height+scr.Y; var iViewPaneWidth = vs.Width +scr.X; //if(relEltWin==winTop) x+=scr.X; if ((x + mainWidth) > iViewPaneWidth) { x-=mainWidth; } //if(relEltWin==winTop)y+=scr.Y; //-------------------------------------------------------------- //combobox 下拉框方向决定代码 comboboxHeight=parseInt(comboboxHeight); if(isNaN(comboboxHeight) || comboboxHeight<0)comboboxHeight=0; if(comboboxHeight>0) { y+=comboboxHeight-1; if ( ( y + body.offsetHeight ) > iViewPaneHeight ) y-=comboboxHeight-2; } //-------------------------------------------------------------- if ( ( y + body.offsetHeight ) > iViewPaneHeight ) { y-=body.offsetHeight; } if ( x < 0 )x = 0 ; frame.style.left= x + 'px' ; frame.style.top = y + 'px' ; frame.width = (mainWidth || w)+"px"; frame.height = (body.offsetHeight || h)+"px"; //显示阴影 if(this.shadowId) { var sd=winTop.document.getElementById(this.shadowId); if(Yz.isIE==false) { sd.style.left=x+3+"px"; sd.style.top=y+3+"px"; sd.style.width=frame.width+"px"; sd.style.height=frame.height+"px"; } else { sd.style.left=x+"px"; sd.style.top=y+"px"; sd.style.width=parseInt(frame.width)-2+"px"; sd.style.height=parseInt(frame.height)-2+"px"; } sd.style.display=""; sd=null; } if(Yz.isIE) frame.focus(); else frame.contentWindow.focus(); this.opened=true; }, hide : function() { if(this.opened==false)return; var frame=window.top.document.getElementById(this.frameId); //隐藏Shadow if(this.shadowId) { window.top.document.getElementById(this.shadowId).style.display="none"; } if(frame) { frame.width=0; frame.height=0; } this.opened=false; if(this.parentId) YzPanel.fromHandle(this.parentId).unlock(); if(this.onHide) Yz.util.delay(this.onHide,null,this); }, lock : function(){this.reference++;}, unlock : function() { this.reference--; if(this.reference<=0 && !this.hasFocus) this.hide(); }, getBody : function(){return this.window.document.getElementById(this.frameId).contentWindow.document.body.firstChild;}, getDocument : function(){return this.window.document.getElementById(this.frameId).contentWindow.document;}, dispose : function() { if(!this.frameId)return; if(this.onDispose) { this.onDispose(this); this.onDispose=null; } try { var frame=this.window.document.getElementById(this.frameId); var body=frame.contentWindow.document.body.firstChild; Yz.util.removeNode(body); body=null; Yz.util.removeNode(frame); frame=null; this.frameId=null; this.Handle=null; } catch(e) { alert("YzPanel_Final_release_error:"+e.message); } if(this.shadowId) { var sd=this.window.document.getElementById(this.shadowId); Yz.util.removeNode(sd); sd=null; } this.window=null; }, importStyleSheet : function(cssFile) { Yz.util.importStyleSheet(this.getDocument(),cssFile); }, getPanelFrame : function() { return window.top.document.getElementById(this.frameId); }, setFocus : function() { var frame=window.top.document.getElementById(this.frameId); if(Yz.isIE) frame.focus(); else frame.contentWindow.focus(); this.hasFocus=true; }, appendDomElement : function(domElt) { return this.getBody().appendChild(domElt); }, getType : function(){return "YzPanel";} } function panel_onfocus(e) { var panelFrame=Yz.isIE ? this : this.frameElement; YzPanel.fromHandle(panelFrame.panelId).hasFocus=true; panelFrame=null; } function panel_onblur(e) { var panelFrame=Yz.isIE ? this : this.frameElement; var panelInst=YzPanel.fromHandle(panelFrame.panelId); panelInst.hasFocus=false; if(panelInst.reference==0) { if(Yz.isIE) { panelInst.hide(); } else { Yz.util.delay(panelInst.hide,null,panelInst); } } }