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Javascript 中的 对象化JS之----仿outlook或者QQ的菜单

出处:互联网   整理: 软晨网（RuanChen.com）   发布: 2009-08-10   浏览: 320 ::
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<html>
<head>
<meta http-equiv='Content-Type' content='text/html; charset=gb2312'>
<style type='text/css'>
.folder1 {text-align:center; background: #00A4E1; border: 2px outset; background-image:url(Images/skin/folder_bg.gif); border-color: #00BBFF #0077FF #FFFFFF #00BBFF; cursor: hand; font-size: 9pt}
.folder2 {text-align:center; background: #20C1FF; border: 2px outset; background-image:url(Images/skin/folder_bg.gif); border-color: #00BBFF #0077FF #0077FF #60D3FF; cursor: hand; font-size: 9pt}
.foldercont{background: #D9ECF4; border: 1px outset; border-color: #B0D8FF #0077FF #0077FF #B0D8FF; font-size: 9pt; cursor: default;}
</style>

<SCRIPT LANGUAGE=javascript>
onload=function(){
 var lstr = ""
 for (var i=0; i<30; i++) lstr+= "haha..<br>";
 var lofolder = new outlookfolder(null,335,100,15);
 lofolder.addfolder("菜单1","1..<br>2..");
 lofolder.addfolder("菜单2",lstr);
 lofolder.addfolder("菜单3");
 lofolder.addfolder("菜单4");
 lofolder.addfolder("菜单5");
 lofolder.showfolderX(0);
}
     //[容器,高,宽,展开速度]
function outlookfolder(aoP,aih,aiw,ait){
 if (aih==null) aih=200;
 if (aiw==null) aiw="100%";
 if (ait==null) ait=10;
 var loMain  = document.createElement("<span style='overflow:hidden;height:"+aih+";width:"+aiw+"'></span>");
    var lsUniqueID = loMain.uniqueID;
 var loSlide = document.createElement("span");
    loSlide.innerHTML = "<button onmouseout='"+lsUniqueID+".SlideClickStop()' onmousedown='"+lsUniqueID+".SlideClickStart();"+lsUniqueID+".SlideCilckup()' style='position:absolute;display:none;width:10;height:10'></button><button onmouseout='"+lsUniqueID+".SlideClickStop()' onmousedown='"+lsUniqueID+".SlideClickStart();"+lsUniqueID+".SlideCilckdown()' style='position:absolute;display:none;width:10;height:10'></button>";
 var liContH = aih;
    if (aoP==null){
        document.body.appendChild(loMain);
        document.body.appendChild(loSlide);
    }else{
        aoP.appendChild(loMain);
        aoP.appendChild(loSlide);
    }
         //增加一个目录[名字,内容]
    loMain.addfolder = function(str,cont){
     var loPar = document.createElement("SPAN");
     loPar.innerHTML = "<span onclick='"+lsUniqueID+".showme(this)' style='overflow:hidden;width:100%;' class='folder1'></span><span style='position:relative;overflow:hidden;width:100%;height:1' class='foldercont'></span>";
  this.appendChild(loPar);
  loPar.children[0].innerHTML = (str==null?"　":str);
  loPar.children[1].innerHTML = (cont==null?"　":cont);
  liContH -= parseInt(loPar.children[0].offsetHeight);
    }
         //打开／关闭第x个目录夹
 loMain.showfolderX = function(aix){
  loMain.showme(loMain.children[aix].children[0])
 }
      //打开/关闭当前obj所在的目录
    loMain.showme = function(obj){
  if (loMain.moving) return;
  loMain.moving = true;
  if (obj.bOpen){
   obj.bOpen = false;
   loMain.closefolder(obj.parentElement.children[1]);
   obj.className = 'folder1';
  }else{
   obj.bOpen = true;
   loMain.openfolder(obj.parentElement.children[1]);
   obj.className = 'folder2';
   var lxfolders = loMain.children;
   for (var i=0; i<lxfolders.length; i++){
    var loChild = lxfolders[i].children[0];
    if(loChild.uniqueID!=obj.uniqueID){
     lxfolders[i].children[1].style.height=1;
     loChild.bOpen = false;
     loChild.className = 'folder1';
    }
   }
  }
  loMain.SlideItemsAction(obj.parentElement.children[1]);
    }
         //为目录内容设置Slide
    var loSlideItem = null;
 var lbSlideing = false;
 loMain.SlideCilckdown = function(){  //向下滚动
  loSlideItem.scrollTop += 2;
  if (!lbSlideing&&loSlideItem.scrollTop<loSlideItem.scrollHeight) setTimeout(lsUniqueID+'.SlideCilckdown()',1)
 }
 loMain.SlideCilckup = function(){  //向上滚动
  loSlideItem.scrollTop -= 2;
  if (!lbSlideing&&loSlideItem.scrollTop>0) setTimeout(lsUniqueID+'.SlideCilckup()',1)
 }
 loMain.SlideClickStart = function(){ //允许开始滚动
  lbSlideing=false;
 }
 loMain.SlideClickStop = function(){  //强制停止滚动
  lbSlideing=true;
 }
    loMain.SlideItemsAction = function(obj){
  var loUp   = loSlide.children[0];
  var loDown = loSlide.children[1];
  if (obj.scrollHeight<=liContH||obj.parentElement.children[0].bOpen!=true){
   loUp.style.display="none";
   loDown.style.display="none";
  }else{
   loSlideItem = obj;
   var lxOffset = getTrueOffset(obj);
   var lileft = lxOffset[0]+obj.offsetWidth-20;
   var litop  = lxOffset[1]+obj.offsetHeight+5;
   with(loUp.style){
    display="";
    left=lileft;
    top=litop;
   }
   with(loDown.style){
    display="";
    left=lileft;
    top=litop+liContH-40;
   }
  }
    }
        //逐渐关闭obj所在的内容显示
 loMain.closefolder = function(obj,ai){
  if (ai==null) ai=liContH;
  if (ai<ait){ obj.style.height=1; ai=1}
  if (ai>1){
   obj.style.height = ai;
   ai -= ait;
   setTimeout(lsUniqueID+'.closefolder('+obj.uniqueID+','+ai+')',1)
   return;
  }
  loMain.moving = false;
 }
     //逐渐打开obj所在的内容显示
 loMain.openfolder = function(obj,ai){
  if (ai==null) ai=1;
  if (liContH>ai){
   obj.style.height = ai;
   ai += ait;
   setTimeout(lsUniqueID+'.openfolder('+obj.uniqueID+','+ai+')',1)
   return;
  }
  loMain.moving = false;
 }
 function getTrueOffset(e){
    var x=0; var y=0;
    if(!e)return [x,y];
    while(e){
      x+=parseInt(e.offsetLeft);
      y+=parseInt(e.offsetTop);
      e=e.offsetParent;
   }
   return [x,y];
  }
  return loMain;
}
</SCRIPT>