<HTML>
<HEAD>
<META http-equiv="Content-Type" content="text/html; charset=gb2312">
<TITLE>拖动</TITLE>
<STYLE>
td
{
width:20%;
height:20px;
border-bottom:1px solid black;
border-right:1px solid black;
cursor:default;
}
div
{
font-size:13px;
}
th
{
height:20px;
font-size:12px;
font-weight:normal;
border-bottom:2px solid black;
background-color:#CCCCCC
}
</STYLE>
<SCRIPT language="javascript">
/*
* created by LxcJie 2005.04.12
* 可以实现表格内容的内部拖动
* 确保中间过度层的存在，id为tempDiv
* 在table的onMouseDown事件中引入showDiv()
*/
/*--------全局变量-----------*/
var x0,y0,x1,y1;
var movable = false;
var preCell = null;
var normalColor = null;
var preColor = "lavender";
var endColor = "#FFCCFF";
/*--------全局变量-----------*/
//得到控件的绝对位置
function getPos(cell)
{
var pos = new Array();
var t=cell.offsetTop;
var l=cell.offsetLeft;
while(cell=cell.offsetParent)
{
t+=cell.offsetTop;
l+=cell.offsetLeft;
}
pos[0] = t;
pos[1] = l;
return pos;
}
//显示图层
function showDiv()
{
var obj = event.srcElement;
var pos = new Array();
//获取过度图层
var oDiv = document.all.tempDiv;
if(obj.tagName.toLowerCase() == "td")
{
obj.style.cursor = "hand";
pos = getPos(obj);
//计算中间过度层位置，赋值
oDiv.style.width = obj.offsetWidth;
oDiv.style.height = obj.offsetHeight;
oDiv.style.top = pos[0];
oDiv.style.left = pos[1];
oDiv.innerHTML = obj.innerHTML;
oDiv.style.display = "";
x0 = pos[1];
y0 = pos[0];
x1 = event.clientX;
y1 = event.clientY;
//记住原td
normalColor = obj.style.backgroundColor;
obj.style.backgroundColor = preColor;
preCell = obj;
movable = true;
}
}
function dragDiv()
{
if(movable)
{
var oDiv = document.all.tempDiv;
var pos = new Array();
oDiv.style.top = event.clientY - y1 + y0;
oDiv.style.left = event.clientX - x1 + x0;
var oTable = document.all.table1;
for(var i=0; i<oTable.cells.length; i++)
{
if(oTable.cells[i].tagName.toLowerCase() == "td")
{
pos = getPos(oTable.cells[i]);
if(event.x>pos[1]&&event.x<pos[1]+oTable.cells[i].offsetWidth
&& event.y>pos[0]&& event.y<pos[0]+oTable.cells[i].offsetHeight)
{
if(oTable.cells[i] != preCell)
oTable.cells[i].style.backgroundColor = endColor;
}
else
{
if(oTable.cells[i] != preCell)
oTable.cells[i].style.backgroundColor = normalColor;
}
}
}
}
}
function hideDiv()
{
if(movable)
{
var oTable = document.all.table1;
var pos = new Array();
if(preCell != null)
{
for(var i=0; i<oTable.cells.length; i++)
{
pos = getPos(oTable.cells[i]);
//计算鼠标位置，是否在某个单元格的范围之内
if(event.x>pos[1]&&event.x<pos[1]+oTable.cells[i].offsetWidth
&& event.y>pos[0]&& event.y<pos[0]+oTable.cells[i].offsetHeight)
{
if(oTable.cells[i].tagName.toLowerCase() == "td")
{
//交换文本
preCell.innerHTML = oTable.cells[i].innerHTML;
oTable.cells[i].innerHTML = document.all.tempDiv.innerHTML;
//清除原单元格和目标单元格的样式
preCell.style.backgroundColor = normalColor;
oTable.cells[i].style.backgroundColor = normalColor;
oTable.cells[i].style.cursor = "";
preCell.style.cursor = "";
preCell.style.backgroundColor = normalColor;
}
}
}
}
movable = false;
//清除提示图层
document.all.tempDiv.style.display = "none";
}
}
document.onmouseup = function()
{
hideDiv();
var oTable = document.all.table1;
for(var i=0; i<oTable.cells.length; i++)
oTable.cells[i].style.backgroundColor = normalColor;
}
document.onmousemove = function()
{
dragDiv();
}
</SCRIPT>
</HEAD>
<BODY oncontextmenu="return false;">
<TABLE style="border:1px solid black;font-size:13px" id="table1" onMouseDown="showDiv()"
onselectstart="return false;" width="70%" align="center" cellpadding="0"
cellspacing="0" bordercolor="#FFCCFF" bgcolor="#FFFFFF">
<TR>
<TH colspan="4" style="">拖动交换单元格内容</TH>
</TR>
<TR>
<TD>Java</TD>
<TD>Java One </TD>
<TD>JBuilder</TD>
<TD>Stuts</TD>
</TR>
<TR>
<TD>C++</TD>
<TD>Visual Studio</TD>
<TD>Office</TD>
<TD>Windows</TD>
</TR>
<TR>
<TD>PhotoShop</TD>
<TD>Java</TD>
<TD>Illustrator</TD>
<TD>PageMaker</TD>
</TR>
<TR>
<TD>Cartoon</TD>
<TD>Telephone</TD>
<TD>China</TD>
<TD>USA</TD>
</TR>
<TR>
<TD>Java</TD>
<TD>Java One </TD>
<TD>JBuilder</TD>
<TD>Stuts</TD>
</TR>
<TR>
<TD>C++</TD>
<TD>Visual Studio</TD>
<TD>Office</TD>
<TD>Windows</TD>
</TR>
<TR>
<TD>PhotoShop</TD>
<TD>Flash</TD>
<TD>Illustrator</TD>
<TD>PageMaker</TD>
</TR>
<TR>
<TD>Cartoon</TD>
<TD>Telephone</TD>
<TD>China</TD>
<TD>USA</TD>
</TR>
</TABLE>
<DIV id="tempDiv" onselectstart="return false" style="cursor:hand;position:absolute;
border:1px solid black; background-color:#FFCCFF; display:none">
</DIV>
</BODY>
</HTML>