Google 个性化主页类似，如何保存最后的布局三
var Drag = {
dragged:false,
ao:null,
tdiv:null,
dragStart:function(){
Drag.ao = event.srcElement;
if((Drag.ao.tagName == "TD")||(Drag.ao.tagName == "TR")){
Drag.ao = Drag.ao.offsetParent;
Drag.ao.style.zIndex = 100;
}else{
return;
}
Drag.dragged = true;
Drag.tdiv = document.createElement("div");
Drag.tdiv.innerHTML = Drag.ao.outerHTML;
Drag.ao.style.border = "1px dashed blue";
Drag.tdiv.style.display = "block";
Drag.tdiv.style.position = "absolute";
Drag.tdiv.style.filter = "alpha(opacity = 70)";
Drag.tdiv.style.cursor = "move";
Drag.tdiv.style.border = "1px solid #000000";
Drag.tdiv.style.width = Drag.ao.offsetWidth;
Drag.tdiv.style.height = Drag.ao.offsetHeight;
Drag.tdiv.style.top = Drag.getInfo(Drag.ao).top;
Drag.tdiv.style.left = Drag.getInfo(Drag.ao).left;
document.body.appendChild(Drag.tdiv);
Drag.lastX = event.clientX;
Drag.lastY = event.clientY;
Drag.lastLeft = Drag.tdiv.style.left;
Drag.lastTop = Drag.tdiv.style.top;
}// end function dragStart()
,
draging:function(){//重要:判断MOUSE的位置
if(!Drag.dragged||Drag.ao == null) return;
var tX = event.clientX;
var tY = event.clientY;
Drag.tdiv.style.left = parseInt(Drag.lastLeft)+tX-Drag.lastX;
Drag.tdiv.style.top = parseInt(Drag.lastTop)+tY-Drag.lastY;
for(var i = 0;i
if(tX >= parentCell.left &&
tX tY >= parentCell.top &&
tY var subTables = parentTable.cells[i].getElementsByTagName("table");
if(subTables.length == 0){
if(tX >= parentCell.left &&
tX tY >= parentCell.top &&
tY parentTable.cells[i].appendChild(Drag.ao);
}
break;
}
for(var j = 0; j
if(tX >= subTable.left &&
tX tY >= subTable.top &&
tY parentTable.cells[i].insertBefore(Drag.ao,subTables[j]);
break;
}else{
parentTable.cells[i].appendChild(Drag.ao);
}
}
}
}
}// end function draging
,
dragEnd:function(){
if(!Drag.dragged) return;
Drag.dragged = false;
Drag.mm = Drag.repos(150,15);
Drag.ao.style.borderWidth = "0px";
//Drag.ao.style.borderTop = "1px solid #3366cc";
Drag.tdiv.style.borderWidth = "0px";
Drag.ao.style.zIndex = 1;
//alert(Drag.ao.outerHTML);
Drag.saveLayout();
displaySaveLayout();
}// end function dragEnd()
,
saveLayout:function()
{ // 把当前布局的位置放到 Cookie 里,按过 "保存页面布局" 后,存到后台
for(var i = 0;i
for(var j = 0;j
// i_cell index of parentTable
// j_node index of parentTable.rows[0][i].childNodes
setCookie(subTables[j].id+"pos",i+"::"+j+"::"+subTables[j].id);
}
}
}// end function saveLayout()
,
initTablePos:function()
{
// 先从 Cookie 里得到值, 如果得不到再到 DB 中挑资料.
var _tablepos = new Array();
var _dragTableHtmlArray = new Array(); // 存放 drag table 里的 html 代码
var _cookies = new Array();
var _c = 0;
// 先把画面上的内容拿到 Javascript 然后重新布局
for(var i = 0;i
for(var j = 0;j
_cookies[_c] = getCookie(subTables[j].id+"pos");
_dragTableHtmlArray[subTables[j].id] = subTables[j].outerHTML;
_c++;
}
if (_cookies.toString().indexOf("::") != -1)
{
parentTable.cells[i].innerHTML = ""; // 清除画面上拖动 Table
}
}
_cookies.sort(); // sort 后按顺序加入 innerHTML
if (_cookies.toString().indexOf("::") != -1)
{
for (var _k = 0 ; _k <_cookies.length> {
if (_cookies[_k] != null)
{
_tablepos = _cookies[_k].split("::");
//alert(_tablepos);
if (typeof(_tablepos) == "object")
{
//alert(_dragTableHtmlArray[_tablepos[2]]);
parentTable.cells[_tablepos[0]].innerHTML += _dragTableHtmlArray[_tablepos[2]];
//parentTable.cells[_tablepos[0]].innerText += _dragTableHtmlArray[_tablepos[2]];
}
}
}
}
//_cookies.sort();
//alert(_cookies);
_dragTableHtmlArray = null;// release memoery
}// end function initDragTablePos()
,
getInfo:function(o){//取得坐标
var to = new Object();
to.left = to.right = to.top = to.bottom = 0;
var twidth = o.offsetWidth;
var theight = o.offsetHeight;
while(o != document.body){
to.left += o.offsetLeft;
to.top += o.offsetTop;
o = o.offsetParent;
}
to.right = to.left+twidth;
to.bottom = to.top+theight;
return to;
}// end function getInfo()
,
repos:function(aa,ab){
var f = Drag.tdiv.filters.alpha.opacity;
var tl = parseInt(Drag.getInfo(Drag.tdiv).left);
var tt = parseInt(Drag.getInfo(Drag.tdiv).top);
var kl = (tl-Drag.getInfo(Drag.ao).left)/ab;
var kt = (tt-Drag.getInfo(Drag.ao).top)/ab;
var kf = f/ab;
return setInterval(
function(){
if(ab clearInterval(Drag.mm);
Drag.tdiv.removeNode(true);
Drag.ao = null;
return;
}
ab--;
tl -= kl;
tt -= kt;
f -= kf;
Drag.tdiv.style.left = parseInt(tl)+"px";
Drag.tdiv.style.top = parseInt(tt)+"px";
Drag.tdiv.filters.alpha.opacity = f;
}// end 动画效果
,aa/ab)
}// end function repos()
,
inint:function(){//初始化
Drag.initTablePos();
for(var i = 0;i
for(var j = 0;j
subTables[j].rows[0].className = "dragTR";
subTables[j].rows[0].attachEvent("onmousedown",Drag.dragStart);
}
}
document.onmousemove = Drag.draging;
document.onmouseup = Drag.dragEnd;
}// end function inint()
}//end of Object Drag
Drag.inint();
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