Google Maps API 2.0解析(16-GLog进行输出和调试的类)

        这是API2.0的新类，这次2.0对开发过程进行了许多优化，这个是其中一个功能。

         // 实际就是GLog类的底层实现
         function  GLogBase()
         {
            var a=CreateElement("div",document.body);
            var b=a.style;
            b.position="absolute";
            b.left=GetPixelValue(7);
            b.bottom=GetPixelValue(4);
            b.zIndex=10000;
            var c=CreateLogDiv(a,new GPoint(2,2));
            var d=CreateElement("div",a);
            b=d.style;
            b.position="relative";
            b.zIndex=1;
            b.fontFamily="VerdaGEvent_moveend,Arial,sans-serif";
            b.fontSize="small";
            b.border="1px solid black";
            var e=[["Clear",this.clear],["Close",this.close]];//定义按钮名称和点击事件
            var f=CreateElement("div",d);
            b=f.style;
            b.position="relative";
            b.zIndex=2;
            b.backgroundColor="#979797";
            b.color="white";
            b.fontSize="85%";
            b.padding=GetPixelValue(2);
            setCursor(f,"default");
            SetUnSelectable(f);
            CreateTextNode("Log",f);
            for(var g=0;g<e.length;g++)
            {
                var h=e[g];
                CreateTextNode(" - ",f);
                var i=CreateElement("span",f);
                i.style.textDecoration="underline";
                CreateTextNode(h[0],i);//按钮名称
                bindClick(i,this,h[1]);//按钮事件
                setCursor(i,"pointer")
            }
            bindDom(f,GEvent_mousedown,this,this.onMouseDown);
            var l=CreateElement("div",d);
            b=l.style;
            b.backgroundColor="white";
            b.width=GetEMValue(24);
            b.height=GetEMValue(10);
            if(browser.isFirefox())
            {
                b.overflow="-moz-scrollbars-vertical"
            }
            else
            {
                b.overflow="auto"
            }
            addDomListener(l,GEvent_mousedown,CancelEventBubble);
            this.contentDiv=l;
            this.container=a;
            this.logDiv=c
        }
         // 通过静态函数来创建GLogBase或获得已创建的GLogBase
        GLogBase.instance = function ()
         {
            var a=GLogBase.object;
            if(!a)
            {
                a=new GLogBase();
                GLogBase.object=a
            }
            return a
        } ;
         // 将指定的内容输出
        GLogBase.prototype.write = function (message,color)
         {
            var c=this.createLogItem();
            if(b)
            {
                c=CreateElement("span",c);
                c.style.color=color
            }
            CreateTextNode(message,c);
            this.reDraw()
        } ;
         // 输出指定的URL
        GLogBase.prototype.writeUrl = function (a)
         {
            var b=CreateElement("a",this.createLogItem());
            CreateTextNode(a,b);
            b.href=a;
            this.reDraw()
        } ;
         // 输出指定的HTML内容
        GLogBase.prototype.writeHtml = function (a)
         {
            var b=CreateElement("span",this.createLogItem());
            b.innerHTML=a;
            this.reDraw()
        } ;
         // 清空所有的输出
        GLogBase.prototype.clear = function ()
         {
            removeNodeChildren(this.contentDiv)
        } ;
         // 删除GLogBase
        GLogBase.prototype.close = function ()
         {
            deposeNode(this.container)
        } ;
         // 点击的时候开始拖动层
        GLogBase.prototype.onMouseDown = function (a)
         {
            if(!this.dragObject)
            {
                this.dragObject=new GDragPanel(this.container);
                this.container.style.bottom=""
            }
        } ;
         // 创建一个输出项目层
        GLogBase.prototype.createLogItem = function ()
         {
            var a=CreateElement("div",this.contentDiv);
            var b=a.style;
            b.fontSize="85%";
            b.whiteSpace="nowrap";
            b.borderBottom="1px solid silver";
            a.style.paddingBottom=GetPixelValue(2);
            var c=CreateElement("div",a);
            c.style.color="gray";
            c.style.fontSize="75%";
            CreateTextNode(this.getlogTime(),c);
            return a
        } ;
         // 内容变化之后调整显示内容
        GLogBase.prototype.reDraw = function ()
         {
            this.contentDiv.scrollTop=this.contentDiv.scrollHeight;
            this.keepSize()
        } ;
         // 获取疏剪输出字符串
        GLogBase.prototype.getlogTime = function ()
         {
            var a=new Date();
            return this.lb(a.getHours(),2)+":"+this.lb(a.getMinutes(),2)+":"+this.lb(a.getSeconds(),2)+":"+this.lb(a.getMilliseconds(),3)
        } ;
         // 将事件中的8转化为08输出
        GLogBase.prototype.lb = function (a,b)
         {
            var c=a.toString();
            while(c.length<b)
            {
                c="0"+c
            }
            return c
        } ;
         // 调整窗口，自适应大小
        GLogBase.prototype.keepSize = function ()
         {
            SetSize(this.logDiv,new GSize(this.container.offsetWidth,this.container.offsetHeight))
        } ;