<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="DragRowDemo.aspx.cs" Inherits="iRightListDemo.拖动列.DragRowDemo" %>
<!doctype html>
<html>
<head>
<title>行拖动 by 司徒正美</title>
<script>
window.onload = function () {
//绑定事件
var addEvent = document.addEventListener ? function (el, type, callback) {
el.addEventListener(type, callback, !1);
} : function (el, type, callback) {
el.attachEvent("on" + type, callback);
}
//判定对样式的支持
var getStyleName = (function () {
var prefixes = ['', '-ms-', '-moz-', '-webkit-', '-khtml-', '-o-'];
var reg_cap = /-([a-z])/g;
function getStyleName(css, el) {
el = el || document.documentElement;
var style = el.style, test;
for (var i = 0, l = prefixes.length; i < l; i++) {
test = (prefixes[i] + css).replace(reg_cap, function ($0, $1) {
return $1.toUpperCase();
});
if (test in style) {
return test;
}
}
return null;
}
return getStyleName;
})();
var userSelect = getStyleName("user-select");
//精确获取样式
var getStyle = document.defaultView ? function (el, style) {
return document.defaultView.getComputedStyle(el, null).getPropertyValue(style)
} : function (el, style) {
style = style.replace(/\-(\w)/g, function ($, $1) {
return $1.toUpperCase();
});
return el.currentStyle[style];
}
var dragManager = {
y: 0,
dragStart: function (e) {
e = e || event;
var handler = e.target || e.srcElement;
if (handler.nodeName === "TD") {
handler = handler.parentNode;
dragManager.handler = handler;
if (!handler.getAttribute("data-background")) {
handler.setAttribute("data-background", getStyle(handler, "background-color"))
}
//显示为可移动的状态
handler.style.backgroundColor = "#ccc";
handler.style.cursor = "move";
dragManager.y = e.clientY;
//★★★★★★★★★★★★★★★★★★★★
if (typeof userSelect === "string") {
return document.documentElement.style[userSelect] = "none";
}
document.unselectable = "on";
document.onselectstart = function () {
return false;
}
//★★★★★★★★★★★★★★★★★★★★
}
},
draging: function (e) {//mousemove时拖动行
var handler = dragManager.handler;
if (handler) {
e = e || event;
var y = e.clientY;
var down = y > dragManager.y;//是否向下移动
var tr = document.elementFromPoint(e.clientX, e.clientY);
if (tr && tr.nodeName == "TD") {
tr = tr.parentNode
dragManager.y = y;
if (handler !== tr) {
tr.parentNode.insertBefore(handler, (down ? tr.nextSibling : tr));
}
};
}
},
dragEnd: function () {
var handler = dragManager.handler
if (handler) {
handler.style.backgroundColor = handler.getAttribute("data-background");
handler.style.cursor = "default";
dragManager.handler = null;
}
//★★★★★★★★★★★★★★★★★★★★
if (typeof userSelect === "string") {
return document.documentElement.style[userSelect] = "text";
}
document.unselectable = "off";
document.onselectstart = null;
//★★★★★★★★★★★★★★★★★★★★
},
main: function (el) {
addEvent(el, "mousedown", dragManager.dragStart);
addEvent(document, "mousemove", dragManager.draging);
addEvent(document, "mouseup", dragManager.dragEnd);
}
}
var el = document.getElementById("table");
dragManager.main(el);
}
</script>
<style>
.table{
width:60%;
border: 1px solid red;
border-collapse: collapse;
}
.table td{
border: 1px solid red;
height: 20px;
}
.table th{
border: 1px solid groove;
border-left: 1px solid groove;
height: 20px;
background:lightgray;
}
</style>
</head>
<body>
<h1>行拖动 by 司徒正美</h1>
<table id="table" class="table">
<thead>
<tr>
<th>编号</th>
<th>顺序</th>
<th>Js文件名</th>
</tr>
</thead>
<tbody>
<tr>
<td>1</td>
<td>One</td>
<td>dom.require</td>
</tr>
<tr id="2" >
<td class="2">2</td>
<td>Two</td>
<td>ControlJS </td>
</tr>
<tr id="3" >
<td class="3">3</td>
<td>Three</td>
<td>HeadJS</td>
</tr>
<tr id="4" >
<td class="4">4</td>
<td>Four</td>
<td>LAB.js</td>
</tr>
<tr id="5" >
<td class="5">5</td>
<td>Five</td>
<td>$script.js</td>
</tr>
<tr id="6" >
<td class="6">6</td>
<td>Six</td>
<td>NBL.js</td>
</tr>
</tbody>
</table>
</body>
</html>
