一个DIV拖放的案例
2013-06-07 14:01 Evan.Pei 阅读(307) 评论(0) 编辑 收藏 举报2013/6/6-2013/6/7研究心得记录一下
效果图：
一.aspx页面
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication1.WebForm1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title></title>
<link href="Style1.css" type="text/css" rel="stylesheet" />
<script src="jq/JScript3.js" type="text/javascript"></script>
<script src="jq/JScript1.js" type="text/javascript"></script>
<script src="jq/jquery-1.3.2.js" type="text/javascript">
</script>
</head>
<body onload="PageLoad(4,6);">
<div id='div_Content' style=" text-align:center;">
</div>
</body>
</html>
<script type="text/javascript">
setTimeout(a,100);
function a(){
$('#m_1_5').css('height', '200px');
$('#m_2_5').css('height', '200px');
$('#m_3_5').css('height', '200px');
}
</script>
二。style1.css
body {
width:100%;
max-height:100%;
padding:0px;
margin:0px;
text-align:center;
}
.cell {
float:left; /*float 属性定义元素在哪个方向浮动*/
clear:right; /*clear 属性规定元素的哪一侧不允许其他浮动元素*/
}
.row {
clear:both; /*在左右两侧均不允许浮动元素*/
}
.r_nbsp {
/*width:200px; */
}
.root {
/*width:1010px;*/
/*margin: 0 auto; /*margin 简写属性在一个声明中设置所有外边距属性*/
}
.root * {
/*次属性FF的说*/
-moz-user-select:none;
}
.line {
width:202px;
line-height:20px;
height:20px;
overflow:hidden;
font-size:12px;
}
.move {
border:#CCCCCC 1px solid;
width:200px;
/*height:20px;*/
}
.title {
cursor:move;
/*background:#0080C0;*/
font-size:13px;
font-weight:bold;
color:#FFFFFF;
line-height:24px;
text-align:center;
}
.content {
border-top:#CCCCCC 1px solid;
background-color:#F7F7F7;
}
.CDrag_temp_div {
border:orange 1px dashed;
}
三。JScript1.js
//var div1 = null;
//var div2 = null;
var Class =
{
//创建类
create: function() {
return function() {
this.initialize.apply(this, arguments);
};
}
};
var $A = function(a) {
//转换数组
return a ? Array.apply(null, a) : new Array;
};
var $$ = function(id) {
//获取对象
return document.getElementById(id);
};
Object.extend = function(a, b) {
//追加方法
for (var i in b) a[i] = b[i];
return a;
};
Object.extend(Object, {
addEvent: function(a, b, c, d) {
//添加函数
if (a.attachEvent) a.attachEvent(b[0], c); //attachEvent("onclick", buttonClicked); //给按钮增加事件
else a.addEventListener(b[1] || b[0].replace(/^on/, ""), c, d || false);
return c;
},
delEvent: function(a, b, c, d) {
if (a.detachEvent) a.detachEvent(b[0], c);
else a.removeEventListener(b[1] || b[0].replace(/^on/, ""), c, d || false);
return c;
},
//---------------------------------------获取Event
reEvent: function() {
//获取Event
return window.event ? window.event : (function(o) {
do {
o = o.caller;
} while (o && !/^\[object[ A-Za-z]*Event\]$/.test(o.arguments[0]));
return o.arguments[0];
})(this.reEvent);
}
});
Function.prototype.bind = function() {
//绑定事件
var wc = this, a = $A(arguments), o = a.shift();
return function() {
wc.apply(o, a.concat($A(arguments)));
};
};
/////////////////////////////////////////////////////////////
var Table = Class.create();
Table.prototype = {
//---------------------------------------初始化
initialize: function() {
//初始化
var wc = this;
wc.cols = new Array; //创建列
},
//---------------------------------------添加列
addCols: function(o) //o代表列
{
//添加列
var wc = this,
cols = wc.cols,
i = cols.length;
return cols[i] = {
id: i, div: o, rows: new Array, //创建行
addRow: wc.addRow,
chRow: wc.chRow,
inRow: wc.inRow,
delRow: wc.delRow
};
},
//---------------------------------------添加行
addRow: function(o) {
//添加行
var wc = this,
rows = wc.rows,
i = rows.length;
return rows[i] = {
id: i, div: o, cols: wc
};
},
//---------------------------------------插入行
inRow: function(a, b) {
//插入行
var wc = b.cols = this,
rows = wc.rows, i;
if (a < rows.length) {
for (i = a; i < rows.length; i++)
rows[i].id++;
rows.splice(a, 0, b);
b.id = a;
return b;
}
else {
b.id = rows.length;
return rows[b.id] = b;
}
},
//---------------------------------------删除列
delRow: function(a) {
//删除列
var wc = this,
rows = wc.rows,
i, r;
if (a >= rows.length) return;
r = rows[a];
rows.splice(a, 1);
for (i = a; i < rows.length; i++) rows[i].id = i;
return r;
}
};
//////////////////////////////////////////////////////////////
var CDrag = Class.create();
CDrag.IE = /MSIE/.test(window.navigator.userAgent);
CDrag.prototype = {
//---------------------------------------初始化成员
initialize: function() {
//初始化成员
var wc = this; //this指类CDrag
wc.table = new Table; //建立表格对象 ,wc.table属性的值是Table类
wc.iFunc = null;
wc.eFunc = null; //新建两个属性值都为空
wc.obj = {//wc.obj属性是对象
on: { a: null, b: "" },
row: null, left: 0, top: 0
};
wc.temp = { row: null, div: document.createElement("div") }; //wc.temp对象
wc.temp.div.setAttribute(CDrag.IE ? "className" : "class", "CDrag_temp_div"); //根据浏览器设置div类样式 ,wc.temp对象中的div属性
wc.temp.div.innerHTML = "<div id='vv' style='position:absolute;'> </div>"; //将内容设置为空
wc.temp.div.style.textAlign = "left"; ////////////+
},
//---------------------------------------获取鼠标位置，鼠标单击层时触发,该方法返回鼠标的xy轴的位置
reMouse: function(a) {
//获取鼠标位置
var e = Object.reEvent(); //被单击的层
return {
x: document.documentElement.scrollLeft + e.clientX, //获取鼠标单击X轴的位置
y: document.documentElement.scrollTop + e.clientY //获取鼠标单击Y轴的位置
};
},
//---------------------------------------获取元素绝对位置
rePosition: function(o) { //参数是div
//获取元素绝对位置
var $x = $y = 0;
do {
$x += o.offsetLeft;
$y += o.offsetTop;
} while ((o = o.offsetParent) && o.tagName != "BODY");
return { x: $x, y: $y };
},
//---------------------------------------单击行时触发
sMove: function(o) {
//当拖动开始时设置参数
var wc = this;
if (wc.iFunc || wc.eFinc) return;
var mouse = wc.reMouse(), //调用方法获取鼠标的位置
temp = wc.temp, //对象
div = o.div, //当前活动的DIV
position = wc.rePosition(div); //获取该活动的DIV的xy的位置
obj = wc.obj, //对象，现在是空的，用来记录活动的层的信息
obj.row = o; //o是addRow返回的对象
obj.on.b = "me";
obj.left = mouse.x - position.x; //赋值，鼠标的位置-层的位置 X
obj.top = mouse.y - position.y;
temp.row = document.body.appendChild(div.cloneNode(true)); //复制预拖拽对象,克隆div
//------1
with (temp.row.style) {//设置被拖拽DIV的样式
//设置复制对象
position = "absolute"; //设置绝对位置
left = mouse.x - obj.left + "px";
top = mouse.y - obj.top + "px";
zIndex = 100;
opacity = "0.3";
filter = "alpha(opacity:50)"; //透明
}
//-------2
with (temp.div.style) {//div的高度和宽度,空div的样式
//设置站位对象
height = div.clientHeight + "px";
width = div.clientWidth + "px";
//background = "Orange";//占位背景色
}
//------3
/*div.parentNode.insertBefore(temp.div, div);
div.style.display = "none"; //隐藏预拖拽对象*/
div.parentNode.replaceChild(temp.div, div); //新的DIV替换了之前的div
//------4
wc.iFunc = Object.addEvent(document, ["onmousemove"], wc.iMove.bind(wc)); //开始拖动时的事件，addEvent添加事件,addEvent( object, eventType, function );
wc.eFunc = Object.addEvent(document, ["onmouseup"], wc.eMove.bind(wc)); //鼠标释放的事件
document.onselectstart = new Function("return false"); //鼠标单击后不能做任何事
//------5
},
//---------------------------------------当鼠标移动时设置参数
iMove: function() {
//当鼠标移动时设置参数
var wc = this, //this=CDrag
cols = wc.table.cols, //获取当前的列数
mouse = wc.reMouse(), //鼠标的位置
obj = wc.obj, //对象,记录着活动的层的信息
temp = wc.temp,
row = obj.row, //
div = temp.row, //克隆后的div
t_position,
t_cols,
t_rows,
i,
j;
//设置div随着鼠标移动
with (div.style) {
left = mouse.x - obj.left + "px";
top = mouse.y - obj.top + "px";
}
//循环所有列
for (i = 0; i < cols.length; i++) {
t_cols = cols[i]; //当前列
t_position = wc.rePosition(t_cols.div); //获取整列div元素的位置
//确保鼠标在这几列的范围内移动
if (t_position.x < mouse.x && t_position.x + t_cols.div.offsetWidth > mouse.x)//div的x小于鼠标的x && 元素x+
{
if (t_cols.rows.length > 0) {
//如果此列行数大于0
if (wc.rePosition(t_cols.rows[0].div).y + 20 > mouse.y) //第一列的高度+20>鼠标的高度
{
//alert(wc.rePosition(t_cols.rows[0].div).y+'鼠标y:'+mouse.y);
//如果鼠标位置大于第一行的位置即是最上。。
//向上
obj.on.a = t_cols.rows[0]; //列里面的第一行
obj.on.b = "up";
obj.on.a.div.parentNode.insertBefore(temp.div, obj.on.a.div);
//temp.div(之前创建的空div),obj.on.a.div(最上面的div)先获取父节点m_1,m_2,在将其添加到最前面
//oNewNode : 必选项。对象(Element)。要被插入文档结构的对象。
//oChildNode : 可选项。对象(Element)。定位插入点。 oNewNode 被插入到紧贴这个子对象的前面
}
//此列的行数大于一 第一行就是被克隆的那行 只要鼠标移过第二行
else if (t_cols.rows.length > 1 && t_cols.rows[0] == row && wc.rePosition(t_cols.rows[1].div).y + 20 > mouse.y) {
//如果第一行是拖拽对象而第鼠标大于第二行位置则，没有动。。
//向上
obj.on.b = "me";
t_cols.rows[1].div.parentNode.insertBefore(temp.div, t_cols.rows[1].div);
}
else { //循环所有列的行
for (j = t_cols.rows.length - 1; j > -1; j--) {
//重最下行向上查询
t_rows = t_cols.rows[j];
if (t_rows == obj.row) { continue; } //如果是同一行
if (wc.rePosition(t_rows.div).y < mouse.y) {
//如果鼠标大于这行则在这行下面
if (t_rows.id + 1 < t_cols.rows.length && t_cols.rows[t_rows.id + 1] != obj.row) {
//如果这行有下一行则重这行下一行的上面插入
t_cols.rows[t_rows.id + 1].div.parentNode.
insertBefore(temp.div, t_cols.rows[t_rows.id + 1].div);
obj.on.a = t_rows;
obj.on.b = "down";
}
else if (t_rows.id + 2 < t_cols.rows.length) {
//如果这行下一行是拖拽对象则插入到下两行，即拖拽对象返回原位
t_cols.rows[t_rows.id + 2].div.parentNode.
insertBefore(temp.div, t_cols.rows[t_rows.id + 2].div);
obj.on.b = "me";
}
else {
//前面都没有满足则放在最低行
t_rows.div.parentNode.appendChild(temp.div);
obj.on.a = t_rows;
obj.on.b = "down";
}
return;
}
}
}
}
else {
//此列无内容添加新行
t_cols.div.appendChild(temp.div);
obj.on.a = t_cols;
obj.on.b = "new";
}
}
}
},
//---------------------------------------当鼠标释放时设置参数
eMove: function() {
//当鼠标释放时设置参数
var wc = this,
obj = wc.obj, //记录正活动div的信息
temp = wc.temp,
row = obj.row,
div = row.div, //拖动的div
o_cols,
n_cols;
div1 = temp.row;
div2 = temp.div; //占位div
//alert(temp.row.offsetTop + ',' + zhanwei.offsetTop);(temp.row,zhanwei)
var div2_y = div2.offsetTop;
var div2_x = document.getElementById('vv').offsetLeft; //div2.offsetLeft;
var div1_Id = div1.id;
Object.delEvent(document, ["onmousemove"], wc.iFunc);
$("#" + div1_Id).animate({ left: div2_x, top: div2_y }, function() {
if (obj.on.b == "up") {
//向最上添加
o_cols = obj.row.cols;
n_cols = obj.on.a.cols;
n_cols.inRow(0, o_cols.delRow(obj.row.id));
}
else if (obj.on.b == "down") {
//相对向下添加
o_cols = obj.row.cols;
n_cols = obj.on.a.cols;
n_cols.inRow(obj.on.a.id + 1, o_cols.delRow(obj.row.id));
}
else if (obj.on.b == "new") {
//向无内容列添加
o_cols = obj.row.cols;
n_cols = obj.on.a;
n_cols.inRow(0, o_cols.delRow(obj.row.id));
}
temp.div.parentNode.replaceChild(div, temp.div); //div替换temp.div
temp.row.parentNode.removeChild(temp.row);
delete temp.row;
//Object.delEvent(document, ["onmousemove"], wc.iFunc);
Object.delEvent(document, ["onmouseup"], wc.eFunc);
document.onselectstart = wc.iFunc = wc.eFunc = null;
});
// oTimer = setInterval(
// function() {
// var isContinue = false;
// var div1_y = div1.offsetTop;
// var div1_x = div1.offsetLeft;
// var div2_y = div2.offsetTop;
// var div2_x = document.getElementById('vv').offsetLeft; //div2.offsetLeft;
// var x1 = 0;
// var y1 = 0;
// if (div1_x > div2_x) {
// if (div1_x - div2_x <= 20) {
// div1.style.left = div1.offsetLeft - 1 + "px"; isContinue = true;
// } else {
// div1.style.left = div1.offsetLeft - 20 + "px"; isContinue = true;
// }
// } else if (div1_x < div2_x) {
// if (div2_x - div1_x <= 20) {
// div1.style.left = div1.offsetLeft + 1 + "px"; isContinue = true;
// } else {
// div1.style.left = div1.offsetLeft + 20 + "px"; isContinue = true;
// }
// }
// if (div1_y > div2_y) {
// if (div1_y - div2_y <= 20) {
// div1.style.top = div1.offsetTop - 1 + "px"; isContinue = true;
// } else {
// div1.style.top = div1.offsetTop - 20 + "px"; isContinue = true;
// }
// } else if (div1_y < div2_y) {
// if (div2_y - div1_y <= 20) {
// div1.style.top = div1.offsetTop + 1 + "px"; isContinue = true;
// } else {
// div1.style.top = div1.offsetTop + 20 + "px"; isContinue = true;
// }
// }
// if (!isContinue) {
// window.clearInterval(oTimer);
// if (obj.on.b == "up") {
// //向最上添加
// o_cols = obj.row.cols;
// n_cols = obj.on.a.cols;
// n_cols.inRow(0, o_cols.delRow(obj.row.id));
// }
// else if (obj.on.b == "down") {
// //相对向下添加
// o_cols = obj.row.cols;
// n_cols = obj.on.a.cols;
// n_cols.inRow(obj.on.a.id + 1, o_cols.delRow(obj.row.id));
// }
// else if (obj.on.b == "new") {
// //向无内容列添加
// o_cols = obj.row.cols;
// n_cols = obj.on.a;
// n_cols.inRow(0, o_cols.delRow(obj.row.id));
// }
// temp.div.parentNode.replaceChild(div, temp.div); //div替换temp.div
// temp.row.parentNode.removeChild(temp.row);
// delete temp.row;
// Object.delEvent(document, ["onmousemove"], wc.iFunc);
// Object.delEvent(document, ["onmouseup"], wc.eFunc);
// document.onselectstart = wc.iFunc = wc.eFunc = null;
// }
// }
// , 50);
},
//---------------------------------------添加对象
add: function(o) { //o代表addRow返回的对象
//添加对象
//alert(o.div);
var wc = this;
Object.addEvent(o.div.childNodes[CDrag.IE ? 0 : 1], ["onmousedown"], wc.sMove.bind(wc, o));
},
//---------------------------------------初始化成员
parse: function(o)//o代表数组
{
//初始化成员
var wc = this, //这里所有的this指向的是对象CDrag
table = wc.table,
cols,
i, j;
for (i = 0; i < o.length; i++)//根据对象数组循环列数
{
cols = table.addCols(o[i].cols); //添加列
for (j = 0; j < o[i].rows.length; j++)
wc.add(cols.addRow(o[i].rows[j])); //将行添加到列中，并绑上事件
}
}
};
}
四。JScript3.js
//窗体加载事件
function PageLoad(colNumber, rowNumber) {
var dwidth = 0;
for (var w = 0; w < colNumber - 1; w++) {//根据列数判断div的宽度
dwidth = dwidth + 202; //每多一列宽度加202
}
$$("div_Content").style.width = dwidth + 'px';
var Cwidth = 0; //列宽
for (var i = 1; i < colNumber; i++) {
var div = CreateObj('div');
div.id = 'm_' + i; //id
div.style.padding = "5";
div.setAttribute('className', 'cell'); //样式
var CTitle = CreateObj('div');
CTitle.setAttribute('className', 'line'); //列
CTitle.innerText = '第' + i + '列';
div.appendChild(CTitle); //添加头
for (var j = 1; j < rowNumber; j++) {
var DContent = CreateObj('div');
DContent.setAttribute('className', 'move');
DContent.id = 'm_' + i + '_' + j;
DContent.style.background = "#fff";
var title = CreateObj('div');
title.setAttribute('className', 'title');
title.innerText = '第' + i + '列的第' + j + '个说';
title.id = "tit_" + i + "_" + j;
//title.style.height = "200px";
//设置宽度随内容变化
if (j == 1 && (title.innerText.length) < 10) {
Cwidth = 200;
}
else if (j == 1 && (title.innerText.length) > 10) {//根据内容的长度绝对div的宽度
var wNumber = (title.innerText.length) - 10;
Cwidth = (200 + (wNumber * 10));
}
with (title.style) {//设置div宽度
width = Cwidth + 'px';
height = "30px";
background = '#0080C0';
}
DContent.style.width = Cwidth + 'px';
DContent.style.height = '100px';
//DContent.innerText = "fdsfds";
var neirongdiv = CreateObj("div");
neirongdiv.innerText = "fdsfdsfdsfsd";
DContent.appendChild(title);
DContent.appendChild(neirongdiv);
div.appendChild(DContent); //将行添加到列中
}
div.style.width = Cwidth + 'px'; //设置大div的宽度也随着内容改变
with (CTitle.style) {
width = 10 + Cwidth + 'px';
}
$$("div_Content").appendChild(div);
}
//拼接数组对象
var F_Node = $$("div_Content")//获取最外面的层
var nodes = F_Node.childNodes;
//循环子节点
var strs = '[';
for (var i = 0; i < nodes.length; i++) {
strs = strs + "{cols:$$('" + nodes[i].id + "')";
var node2 = nodes[i].childNodes; //获取子节点
if (node2.length > 0)
strs += ",rows:[";
for (var j = 0; j < node2.length; j++) {
var CurrentNode = node2[j].nextSibling; //兄弟节点的下一个节点
if (CurrentNode != null)
strs += "$$('" + CurrentNode.id + "'),"
}
strs = strs.substring(0, strs.length - 1) + "]},"; //去，号
}
strs = strs.substring(0, strs.length - 1) + "]";
var wc = new CDrag;
wc.parse(eval(strs));
}
//创建对象
function CreateObj(obj) {
return document.createElement(obj);
}
