http://www.cnblogs.com/pqmagic/archive/2009/10/04/1577951.html
1
var Util = new Object();
2
Util.getUserAgent = navigator.userAgent;
3
Util.isGecko = Util.getUserAgent.indexOf("Gecko") != -1;
4
Util.isOpera = Util.getUserAgent.indexOf("Opera") != -1;
5
Util.getOffset = function(el, isLeft) {
6
var retValue = 0;
7
while (el != null) {
8
retValue += el["offset" + (isLeft ? "Left" : "Top")];
9
el = el.offsetParent;
10
}
11
return retValue;
12
};
13
14
Util.bindFunction = function(el, fucName) {
15
return function() {
16
return el[fucName].apply(el, arguments);
17
};
18
};
19
20
Util.re_calcOff = function(el) {
21
for (var i = 0; i < Util.dragArray.length; i++) {
22
var ele = Util.dragArray[i];
23
ele.elm.pagePosLeft = Util.getOffset(ele.elm, true);
24
ele.elm.pagePosTop = Util.getOffset(ele.elm, false);
25
}
26
var nextSib = el.elm.nextSibling;
27
while (nextSib) {
28
nextSib.pagePosTop -= el.elm.offsetHeight;
29
nextSib = nextSib.nextSibling;
30
}
31
};
32
33
Util.hide = function() {
34
Util.rootElement.style.display = "none";
35
};
36
Util.show = function() {
37
Util.rootElement.style.display = "";
38
};
39
40
ghostElement = null;
41
getGhostElement = function() {
42
if (!ghostElement) {
43
ghostElement = document.createElement("DIV");
44
ghostElement.backgroundColor = "";
45
ghostElement.style.border = "2px dashed #aaa";
46
ghostElement.innerHTML = " ";
47
}
48
return ghostElement;
49
};
50
51
function draggable(el) {
52
this._dragStart = start_Drag;
53
this._drag = when_Drag;
54
this._dragEnd = end_Drag;
55
this._afterDrag = after_Drag;
56
this.isDragging = false;
57
this.elm = el;
58
this.header = document.getElementById(el.id + "_h");
59
this.hasIFrame = this.elm.getElementsByTagName("IFRAME").length > 0;
60
if (this.header) {
61
this.header.style.cursor = "move";
62
Drag.init(this.header, this.elm);
63
this.elm.onDragStart = Util.bindFunction(this, "_dragStart");
64
this.elm.onDrag = Util.bindFunction(this, "_drag");
65
this.elm.onDragEnd = Util.bindFunction(this, "_dragEnd");
66
}
67
};
68
69
function start_Drag() {
70
Util.re_calcOff(this);
71
this.origNextSibling = this.elm.nextSibling;
72
var _ghostElement = getGhostElement();
73
var offH = this.elm.offsetHeight;
74
if (Util.isGecko) {
75
offH -= parseInt(_ghostElement.style.borderTopWidth) * 2;
76
}
77
var offW = this.elm.offsetWidth;
78
var offLeft = Util.getOffset(this.elm, true);
79
var offTop = Util.getOffset(this.elm, false);
80
Util.hide();
81
this.elm.style.width = offW + "px";
82
_ghostElement.style.height = offH + "px";
83
this.elm.parentNode.insertBefore(_ghostElement, this.elm.nextSibling);
84
this.elm.style.position = "absolute";
85
this.elm.style.zIndex = 100;
86
this.elm.style.left = offLeft + "px";
87
this.elm.style.top = offTop + "px";
88
Util.show();
89
this.isDragging = false;
90
return false;
91
};
92
function when_Drag(clientX, clientY) {
93
if (!this.isDragging) {
94
this.elm.style.filter = "alpha(opacity=70)";
95
this.elm.style.opacity = 0.7;
96
this.isDragging = true;
97
}
98
var found = null;
99
var max_distance = 100000000;
100
for (var i = 0; i < Util.dragArray.length; i++) {
101
var ele = Util.dragArray[i];
102
var distance = Math.sqrt(Math.pow(clientX - ele.elm.pagePosLeft, 2) + Math.pow(clientY - ele.elm.pagePosTop, 2));
103
if (ele == this) {
104
continue;
105
}
106
if (isNaN(distance)) {
107
continue;
108
}
109
if (distance < max_distance) {
110
max_distance = distance;
111
found = ele;
112
}
113
}
114
var _ghostElement = getGhostElement();
115
if (found != null && _ghostElement.nextSibling != found.elm) {
116
found.elm.parentNode.insertBefore(_ghostElement, found.elm);
117
if (Util.isOpera) {
118
document.body.style.display = "none";
119
document.body.style.display = "";
120
}
121
}
122
};
123
function end_Drag() {
124
if (this._afterDrag()) {
125
}
126
return true;
127
};
128
function after_Drag() {
129
var returnValue = false;
130
Util.hide();
131
this.elm.style.position = "";
132
this.elm.style.width = "";
133
this.elm.style.zIndex = "";
134
this.elm.style.filter = "";
135
this.elm.style.opacity = "";
136
var ele = getGhostElement();
137
if (ele.nextSibling != this.origNextSibling) {
138
ele.parentNode.insertBefore(this.elm, ele.nextSibling);
139
returnValue = true;
140
}
141
ele.parentNode.removeChild(ele);
142
Util.show();
143
if (Util.isOpera) {
144
document.body.style.display = "none";
145
document.body.style.display = "";
146
}
147
return returnValue;
148
};
149
var Drag = {
150
obj: null,
151
init: function(elementHeader, element) {
152
elementHeader.onmousedown = Drag.start;
153
elementHeader.obj = element;
154
if (isNaN(parseInt(element.style.left))) {
155
element.style.left = "0px";
156
}
157
if (isNaN(parseInt(element.style.top))) {
158
element.style.top = "0px";
159
}
160
element.onDragStart = new Function();
161
element.onDragEnd = new Function();
162
element.onDrag = new Function();
163
},
164
start: function(event) {
165
var element = Drag.obj = this.obj;
166
event = Drag.fixE(event);
167
if (event.which != 1) {
168
return true;
169
}
170
element.onDragStart();
171
element.lastMouseX = event.clientX;
172
element.lastMouseY = event.clientY;
173
document.onmouseup = Drag.end;
174
document.onmousemove = Drag.drag;
175
return false;
176
},
177
drag: function(event) {
178
event = Drag.fixE(event);
179
if (event.which == 0) {
180
return Drag.end();
181
}
182
var element = Drag.obj;
183
var _clientX = event.clientY;
184
var _clientY = event.clientX;
185
if (element.lastMouseX == _clientY && element.lastMouseY == _clientX) {
186
return false;
187
}
188
var _lastX = parseInt(element.style.top);
189
var _lastY = parseInt(element.style.left);
190
var newX, newY;
191
newX = _lastY + _clientY - element.lastMouseX;
192
newY = _lastX + _clientX - element.lastMouseY;
193
element.style.left = newX + "px";
194
element.style.top = newY + "px";
195
element.lastMouseX = _clientY;
196
element.lastMouseY = _clientX;
197
element.onDrag(newX, newY);
198
return false;
199
},
200
end: function(event) {
201
event = Drag.fixE(event);
202
document.onmousemove = null;
203
document.onmouseup = null;
204
var _onDragEndFuc = Drag.obj.onDragEnd();
205
Drag.obj = null;
206
return _onDragEndFuc;
207
},
208
fixE: function(ig_) {
209
if (typeof ig_ == "undefined") {
210
ig_ = window.event;
211
}
212
if (typeof ig_.layerX == "undefined") {
213
ig_.layerX = ig_.offsetX;
214
}
215
if (typeof ig_.layerY == "undefined") {
216
ig_.layerY = ig_.offsetY;
217
}
218
if (typeof ig_.which == "undefined") {
219
ig_.which = ig_.button;
220
}
221
return ig_;
222
}
223
};
224
225
var _IG_initDrag = function(el) {
226
Util.rootElement = el;
227
Util._rows = Util.rootElement.rows[0];
228
Util.column = Util._rows.cells;
229
Util.dragArray = new Array();
230
var counter = 0;
231
for (var i = 0; i < Util.column.length; i++) {
232
var ele = Util.column[i];
233
for (var j = 0; j < ele.childNodes.length; j++) {
234
var ele1 = ele.childNodes[j];
235
if (ele1.tagName == "DIV") {
236
Util.dragArray[counter] = new draggable(ele1);
237
counter++;
238
}
239
}
240
}
241
};
242
243
var _IG_closePanel = function(id) {
244
document.getElementById(id).style.display = "none";
245
};
控件容器DragDrop.cs
1
using System;
2
using System.Collections.Generic;
3
using System.Linq;
4
using System.Text;
5
using System.IO;
6
using System.Web;
7
using System.ComponentModel;
8
using System.Web.UI;
9
using System.Web.UI.Design;
10
using System.Web.UI.WebControls;
11
12
[assembly: WebResource("pqmagic.Common.UI.Resources.DragDrop.js", "text/javascript")]
13
namespace pqmagic.Common.UI
14
{
15
[
16
ToolboxData("<{0}:DragDrop runat=\"server\"></{0}:DragDrop>"),
17
Designer(typeof(SubContainerControlDesigner)),
18
ParseChildren(typeof(DragDropPanel)),
19
PersistChildren(true)
20
]
21
public class DragDrop : WebControl
22
{
23
private int repeatColumns = 3;
24
25
/// <summary>
26
/// 重复数
27
/// </summary>
28
[
29
Browsable(true),
30
Description("设置/获取重复数"),
31
Category("Misc"),
32
DefaultValue("3")
33
]
34
public int RepeatColumns
35
{
36
get
37
{
38
return repeatColumns;
39
}
40
set
41
{
42
repeatColumns = value;
43
}
44
}
45
46
protected override HtmlTextWriterTag TagKey
47
{
48
get
49
{
50
return HtmlTextWriterTag.Table;
51
}
52
}
53
54
protected override void OnPreRender(EventArgs e)
55
{
56
if (!Page.ClientScript.IsClientScriptIncludeRegistered("DragDrop"))
57
{
58
Page.ClientScript.RegisterClientScriptInclude("DragDrop", Page.ClientScript.GetWebResourceUrl(this.GetType(), "pqmagic.Common.UI.Resources.DragDrop.js"));
59
}
60
Page.ClientScript.RegisterStartupScript(this.GetType(), "InitDragDrop", "window.onload=function(){var _table = document.getElementById('"+ID+"');_IG_initDrag(_table);};",true);
61
base.OnPreRender(e);
62
}
63
64
protected override void AddAttributesToRender(HtmlTextWriter writer)
65
{
66
writer.AddStyleAttribute(HtmlTextWriterStyle.TextAlign, "center");
67
base.AddAttributesToRender(writer);
68
}
69
70
protected override void RenderContents(HtmlTextWriter writer)
71
{
72
writer.Write("<tr>");
73
for (int i = 0; i < repeatColumns; i++)
74
{
75
writer.Write(string.Format("<td style=\"padding:3px;width:{0};vertical-align:top\">", new Unit(100 / repeatColumns, UnitType.Percentage)));
76
for (int j = i;j< DragDropPanels.Count; j+=repeatColumns)
77
{
78
DragDropPanels[j].RenderControl(writer);
79
}
80
writer.Write("</td>");
81
}
82
writer.Write("</tr>");
83
}
84
85
protected override ControlCollection CreateControlCollection()
86
{
87
return new DragDropPanelCollection(this);
88
}
89
90
protected override void AddParsedSubObject(object obj)
91
{
92
DragDropPanel panel = obj as DragDropPanel;
93
if (panel != null)
94
{
95
base.Controls.Add(panel);
96
}
97
}
98
99
[PersistenceMode(PersistenceMode.InnerDefaultProperty), Browsable(false)]
100
protected DragDropPanelCollection DragDropPanels
101
{
102
get
103
{
104
return (DragDropPanelCollection)this.Controls;
105
}
106
}
107
}
108
}
109
容器内部可拖动的面板DragDropPanel.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Web;
using System.Drawing;
using System.ComponentModel;
using System.Web.UI;
using System.Web.UI.Design;
using System.Web.UI.WebControls;
[assembly: WebResource("pqmagic.Common.UI.Resources.close.gif", "image/gif")]
namespace pqmagic.Common.UI
{
[
ToolboxData("<{0}:DragDropPanel runat=\"server\"></{0}:DragDropPanel>"),
Designer(typeof(SubContainerControlDesigner)),
ParseChildren(false),
PersistChildren(true)
]
public class DragDropPanel : WebControl
{
private string title = string.Empty;
private Unit width = new Unit(100, UnitType.Percentage);
private Unit height = new Unit(320, UnitType.Pixel);
private Color headerBgColor = Color.FromArgb(0xd3, 0xea, 0xef);
private string headerOnClientClick = string.Empty;
/// <summary>
/// 面板标题
/// </summary>
[
Browsable(true),
Description("设置/获取面板标题"),
Category("Misc")
]
public string Title
{
get
{
return title;
}
set
{
title = value;
}
}
/// <summary>
/// 面板高度
/// </summary>
[
Browsable(true),
Description("设置/获取面板高度"),
Category("Misc")
]
public override Unit Height
{
get
{
return height;
}
set
{
height = value;
}
}
public override Unit Width
{
get
{
return width;
}
}
/// <summary>
/// 标题背景颜色
/// </summary>
[
Browsable(true),
Description("设置/获取标题背景颜色"),
Category("Misc")
]
public Color HeaderBgColor
{
get
{
return headerBgColor;
}
set
{
headerBgColor = value;
}
}
/// <summary>
/// 点击标题客户端脚本
/// </summary>
[
Browsable(true),
Description("设置/获取点击标题客户端脚本"),
Category("Misc")
]
public string HeaderOnClientClick
{
get
{
return headerOnClientClick;
}
set
{
headerOnClientClick = value;
}
}
protected override HtmlTextWriterTag TagKey
{
get
{
return HtmlTextWriterTag.Div;
}
}
protected override void AddAttributesToRender(HtmlTextWriter writer)
{
writer.AddStyleAttribute(HtmlTextWriterStyle.MarginTop, "3px");
writer.AddStyleAttribute(HtmlTextWriterStyle.Height, Height.ToString());
writer.AddStyleAttribute(HtmlTextWriterStyle.BorderWidth, "1px");
writer.AddStyleAttribute(HtmlTextWriterStyle.BorderColor, "#ccc");
writer.AddStyleAttribute(HtmlTextWriterStyle.BorderStyle, "solid");
writer.AddStyleAttribute(HtmlTextWriterStyle.Width, width.ToString());
writer.AddStyleAttribute(HtmlTextWriterStyle.BackgroundColor, "white");
base.AddAttributesToRender(writer);
}
protected override void RenderContents(HtmlTextWriter writer)
{
writer.Write(string.Format("<div id=\"{0}_h\" style=\"height:20px;border-right: #eaf0f6 1px solid; padding-right: 2px; padding-left: 2px;padding-bottom: 2px; margin: 0px; cursor: pointer; padding-top: 2px; border-bottom: #ccc 1px solid;background-color: {1}\">", ID, ColorTranslator.ToHtml(headerBgColor)));
writer.Write("<table border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"100%;height:20px\">");
writer.Write(string.Format("<tr><td style=\"text-align:left;font-weight:bold;padding-left:3px;padding-top:3px\">{0}</td><td style=\"text-align:right;padding-right:3px\"><img src=\"{1}\" onclick=\"_IG_closePanel('{2}');\" alt=\"关闭\" style=\"cursor:pointer\"/></td></tr>", headerOnClientClick == string.Empty ? Title : "<a href=\"#\" onclick=\"" + headerOnClientClick + "\" style=\"text-decoration:underline\">" + Title + "</a>", Page.ClientScript.GetWebResourceUrl(this.GetType(), "pqmagic.Common.UI.Resources.close.gif"), ID));
writer.Write("</table>");
writer.Write("</div>");
writer.Write("<div style=\"overflow:scroll\">");
base.RenderContents(writer);
writer.Write("</div>");
}
}
}
面板集合DragDropPanelCollection.cs
using System;
using System.Reflection;
using System.Security.Permissions;
using System.Web;
using System.Drawing.Design;
using System.Web.UI;
namespace pqmagic.Common.UI
{
[AspNetHostingPermission(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal), AspNetHostingPermission(SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
public class DragDropPanelCollection : ControlCollection
{
public DragDropPanelCollection(Control owner):base(owner)
{
}
public override void Add(Control child)
{
if (!(child is DragDropPanel))
{
throw new ArgumentException("该集合只能添加DragDropPanel类型的控件");
}
base.Add(child);
}
public override void AddAt(int index, Control child)
{
if (!(child is DragDropPanel))
{
throw new ArgumentException("该集合只能添加DragDropPanel类型的控件");
}
base.AddAt(index, child);
}
public new DragDropPanel this[int index]
{
get
{
return (DragDropPanel)base[index];
}
}
}
}
一直想封装一个像Google个性主页那样的可拖动布局管理器,供管理后台作为默认首页使用。
在网上搜了一下,找到此篇文章对google个性主页的拖拽效果的js的完整注释。在此先向原作者致敬,没有这篇文章,我是没法封装此控件的:)
不用多说,先附上效果图:

DragDrop.js(就是原作者提供的js文件,没有做太多改动)
1
var Util = new Object();2
Util.getUserAgent = navigator.userAgent;3
Util.isGecko = Util.getUserAgent.indexOf("Gecko") != -1;4
Util.isOpera = Util.getUserAgent.indexOf("Opera") != -1;5
Util.getOffset = function(el, isLeft) {6
var retValue = 0;7
while (el != null) {8
retValue += el["offset" + (isLeft ? "Left" : "Top")];9
el = el.offsetParent;10
}11
return retValue;12
};13

14
Util.bindFunction = function(el, fucName) {15
return function() {16
return el[fucName].apply(el, arguments);17
};18
};19

20
Util.re_calcOff = function(el) {21
for (var i = 0; i < Util.dragArray.length; i++) {22
var ele = Util.dragArray[i];23
ele.elm.pagePosLeft = Util.getOffset(ele.elm, true);24
ele.elm.pagePosTop = Util.getOffset(ele.elm, false);25
}26
var nextSib = el.elm.nextSibling;27
while (nextSib) {28
nextSib.pagePosTop -= el.elm.offsetHeight;29
nextSib = nextSib.nextSibling;30
}31
};32

33
Util.hide = function() {34
Util.rootElement.style.display = "none";35
};36
Util.show = function() {37
Util.rootElement.style.display = "";38
};39

40
ghostElement = null;41
getGhostElement = function() {42
if (!ghostElement) {43
ghostElement = document.createElement("DIV");44
ghostElement.backgroundColor = "";45
ghostElement.style.border = "2px dashed #aaa";46
ghostElement.innerHTML = " ";47
}48
return ghostElement;49
};50

51
function draggable(el) {52
this._dragStart = start_Drag;53
this._drag = when_Drag;54
this._dragEnd = end_Drag;55
this._afterDrag = after_Drag;56
this.isDragging = false;57
this.elm = el;58
this.header = document.getElementById(el.id + "_h");59
this.hasIFrame = this.elm.getElementsByTagName("IFRAME").length > 0;60
if (this.header) {61
this.header.style.cursor = "move";62
Drag.init(this.header, this.elm);63
this.elm.onDragStart = Util.bindFunction(this, "_dragStart");64
this.elm.onDrag = Util.bindFunction(this, "_drag");65
this.elm.onDragEnd = Util.bindFunction(this, "_dragEnd");66
}67
};68

69
function start_Drag() {70
Util.re_calcOff(this);71
this.origNextSibling = this.elm.nextSibling;72
var _ghostElement = getGhostElement();73
var offH = this.elm.offsetHeight;74
if (Util.isGecko) {75
offH -= parseInt(_ghostElement.style.borderTopWidth) * 2;76
}77
var offW = this.elm.offsetWidth;78
var offLeft = Util.getOffset(this.elm, true);79
var offTop = Util.getOffset(this.elm, false);80
Util.hide();81
this.elm.style.width = offW + "px";82
_ghostElement.style.height = offH + "px";83
this.elm.parentNode.insertBefore(_ghostElement, this.elm.nextSibling);84
this.elm.style.position = "absolute";85
this.elm.style.zIndex = 100;86
this.elm.style.left = offLeft + "px";87
this.elm.style.top = offTop + "px";88
Util.show();89
this.isDragging = false;90
return false;91
};92
function when_Drag(clientX, clientY) {93
if (!this.isDragging) {94
this.elm.style.filter = "alpha(opacity=70)";95
this.elm.style.opacity = 0.7;96
this.isDragging = true;97
}98
var found = null;99
var max_distance = 100000000;100
for (var i = 0; i < Util.dragArray.length; i++) {101
var ele = Util.dragArray[i];102
var distance = Math.sqrt(Math.pow(clientX - ele.elm.pagePosLeft, 2) + Math.pow(clientY - ele.elm.pagePosTop, 2));103
if (ele == this) {104
continue;105
}106
if (isNaN(distance)) {107
continue;108
}109
if (distance < max_distance) {110
max_distance = distance;111
found = ele;112
}113
}114
var _ghostElement = getGhostElement();115
if (found != null && _ghostElement.nextSibling != found.elm) {116
found.elm.parentNode.insertBefore(_ghostElement, found.elm);117
if (Util.isOpera) {118
document.body.style.display = "none";119
document.body.style.display = "";120
}121
}122
};123
function end_Drag() {124
if (this._afterDrag()) {125
}126
return true;127
};128
function after_Drag() {129
var returnValue = false;130
Util.hide();131
this.elm.style.position = "";132
this.elm.style.width = "";133
this.elm.style.zIndex = "";134
this.elm.style.filter = "";135
this.elm.style.opacity = "";136
var ele = getGhostElement();137
if (ele.nextSibling != this.origNextSibling) {138
ele.parentNode.insertBefore(this.elm, ele.nextSibling);139
returnValue = true;140
}141
ele.parentNode.removeChild(ele);142
Util.show();143
if (Util.isOpera) {144
document.body.style.display = "none";145
document.body.style.display = "";146
}147
return returnValue;148
};149
var Drag = {150
obj: null,151
init: function(elementHeader, element) {152
elementHeader.onmousedown = Drag.start;153
elementHeader.obj = element;154
if (isNaN(parseInt(element.style.left))) {155
element.style.left = "0px";156
}157
if (isNaN(parseInt(element.style.top))) {158
element.style.top = "0px";159
}160
element.onDragStart = new Function();161
element.onDragEnd = new Function();162
element.onDrag = new Function();163
},164
start: function(event) {165
var element = Drag.obj = this.obj;166
event = Drag.fixE(event);167
if (event.which != 1) {168
return true;169
}170
element.onDragStart();171
element.lastMouseX = event.clientX;172
element.lastMouseY = event.clientY;173
document.onmouseup = Drag.end;174
document.onmousemove = Drag.drag;175
return false;176
},177
drag: function(event) {178
event = Drag.fixE(event);179
if (event.which == 0) {180
return Drag.end();181
}182
var element = Drag.obj;183
var _clientX = event.clientY;184
var _clientY = event.clientX;185
if (element.lastMouseX == _clientY && element.lastMouseY == _clientX) {186
return false;187
}188
var _lastX = parseInt(element.style.top);189
var _lastY = parseInt(element.style.left);190
var newX, newY;191
newX = _lastY + _clientY - element.lastMouseX;192
newY = _lastX + _clientX - element.lastMouseY;193
element.style.left = newX + "px";194
element.style.top = newY + "px";195
element.lastMouseX = _clientY;196
element.lastMouseY = _clientX;197
element.onDrag(newX, newY);198
return false;199
},200
end: function(event) {201
event = Drag.fixE(event);202
document.onmousemove = null;203
document.onmouseup = null;204
var _onDragEndFuc = Drag.obj.onDragEnd();205
Drag.obj = null;206
return _onDragEndFuc;207
},208
fixE: function(ig_) {209
if (typeof ig_ == "undefined") {210
ig_ = window.event;211
}212
if (typeof ig_.layerX == "undefined") {213
ig_.layerX = ig_.offsetX;214
}215
if (typeof ig_.layerY == "undefined") {216
ig_.layerY = ig_.offsetY;217
}218
if (typeof ig_.which == "undefined") {219
ig_.which = ig_.button;220
}221
return ig_;222
}223
};224

225
var _IG_initDrag = function(el) {226
Util.rootElement = el;227
Util._rows = Util.rootElement.rows[0];228
Util.column = Util._rows.cells;229
Util.dragArray = new Array();230
var counter = 0;231
for (var i = 0; i < Util.column.length; i++) {232
var ele = Util.column[i];233
for (var j = 0; j < ele.childNodes.length; j++) {234
var ele1 = ele.childNodes[j];235
if (ele1.tagName == "DIV") {236
Util.dragArray[counter] = new draggable(ele1);237
counter++;238
}239
}240
}241
};242

243
var _IG_closePanel = function(id) {244
document.getElementById(id).style.display = "none";245
};
1
using System;2
using System.Collections.Generic;3
using System.Linq;4
using System.Text;5
using System.IO;6
using System.Web;7
using System.ComponentModel;8
using System.Web.UI;9
using System.Web.UI.Design;10
using System.Web.UI.WebControls;11

12
[assembly: WebResource("pqmagic.Common.UI.Resources.DragDrop.js", "text/javascript")]13
namespace pqmagic.Common.UI14
{15
[16
ToolboxData("<{0}:DragDrop runat=\"server\"></{0}:DragDrop>"),17
Designer(typeof(SubContainerControlDesigner)),18
ParseChildren(typeof(DragDropPanel)),19
PersistChildren(true)20
]21
public class DragDrop : WebControl22
{23
private int repeatColumns = 3;24

25
/// <summary>26
/// 重复数27
/// </summary>28
[29
Browsable(true),30
Description("设置/获取重复数"),31
Category("Misc"),32
DefaultValue("3")33
]34
public int RepeatColumns35
{36
get37
{38
return repeatColumns;39
}40
set41
{42
repeatColumns = value;43
}44
}45

46
protected override HtmlTextWriterTag TagKey47
{48
get49
{50
return HtmlTextWriterTag.Table;51
}52
}53

54
protected override void OnPreRender(EventArgs e)55
{56
if (!Page.ClientScript.IsClientScriptIncludeRegistered("DragDrop"))57
{58
Page.ClientScript.RegisterClientScriptInclude("DragDrop", Page.ClientScript.GetWebResourceUrl(this.GetType(), "pqmagic.Common.UI.Resources.DragDrop.js"));59
}60
Page.ClientScript.RegisterStartupScript(this.GetType(), "InitDragDrop", "window.onload=function(){var _table = document.getElementById('"+ID+"');_IG_initDrag(_table);};",true);61
base.OnPreRender(e);62
}63

64
protected override void AddAttributesToRender(HtmlTextWriter writer)65
{66
writer.AddStyleAttribute(HtmlTextWriterStyle.TextAlign, "center");67
base.AddAttributesToRender(writer);68
}69

70
protected override void RenderContents(HtmlTextWriter writer)71
{72
writer.Write("<tr>");73
for (int i = 0; i < repeatColumns; i++)74
{75
writer.Write(string.Format("<td style=\"padding:3px;width:{0};vertical-align:top\">", new Unit(100 / repeatColumns, UnitType.Percentage)));76
for (int j = i;j< DragDropPanels.Count; j+=repeatColumns)77
{78
DragDropPanels[j].RenderControl(writer);79
}80
writer.Write("</td>");81
}82
writer.Write("</tr>");83
}84

85
protected override ControlCollection CreateControlCollection()86
{87
return new DragDropPanelCollection(this);88
}89

90
protected override void AddParsedSubObject(object obj)91
{92
DragDropPanel panel = obj as DragDropPanel;93
if (panel != null)94
{95
base.Controls.Add(panel);96
}97
}98

99
[PersistenceMode(PersistenceMode.InnerDefaultProperty), Browsable(false)]100
protected DragDropPanelCollection DragDropPanels101
{102
get103
{104
return (DragDropPanelCollection)this.Controls;105
}106
}107
}108
}109
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Web;
using System.Drawing;
using System.ComponentModel;
using System.Web.UI;
using System.Web.UI.Design;
using System.Web.UI.WebControls;
[assembly: WebResource("pqmagic.Common.UI.Resources.close.gif", "image/gif")]
namespace pqmagic.Common.UI
{
[
ToolboxData("<{0}:DragDropPanel runat=\"server\"></{0}:DragDropPanel>"),
Designer(typeof(SubContainerControlDesigner)),
ParseChildren(false),
PersistChildren(true)
]
public class DragDropPanel : WebControl
{
private string title = string.Empty;
private Unit width = new Unit(100, UnitType.Percentage);
private Unit height = new Unit(320, UnitType.Pixel);
private Color headerBgColor = Color.FromArgb(0xd3, 0xea, 0xef);
private string headerOnClientClick = string.Empty;
/// <summary>
/// 面板标题
/// </summary>
[
Browsable(true),
Description("设置/获取面板标题"),
Category("Misc")
]
public string Title
{
get
{
return title;
}
set
{
title = value;
}
}
/// <summary>
/// 面板高度
/// </summary>
[
Browsable(true),
Description("设置/获取面板高度"),
Category("Misc")
]
public override Unit Height
{
get
{
return height;
}
set
{
height = value;
}
}
public override Unit Width
{
get
{
return width;
}
}
/// <summary>
/// 标题背景颜色
/// </summary>
[
Browsable(true),
Description("设置/获取标题背景颜色"),
Category("Misc")
]
public Color HeaderBgColor
{
get
{
return headerBgColor;
}
set
{
headerBgColor = value;
}
}
/// <summary>
/// 点击标题客户端脚本
/// </summary>
[
Browsable(true),
Description("设置/获取点击标题客户端脚本"),
Category("Misc")
]
public string HeaderOnClientClick
{
get
{
return headerOnClientClick;
}
set
{
headerOnClientClick = value;
}
}
protected override HtmlTextWriterTag TagKey
{
get
{
return HtmlTextWriterTag.Div;
}
}
protected override void AddAttributesToRender(HtmlTextWriter writer)
{
writer.AddStyleAttribute(HtmlTextWriterStyle.MarginTop, "3px");
writer.AddStyleAttribute(HtmlTextWriterStyle.Height, Height.ToString());
writer.AddStyleAttribute(HtmlTextWriterStyle.BorderWidth, "1px");
writer.AddStyleAttribute(HtmlTextWriterStyle.BorderColor, "#ccc");
writer.AddStyleAttribute(HtmlTextWriterStyle.BorderStyle, "solid");
writer.AddStyleAttribute(HtmlTextWriterStyle.Width, width.ToString());
writer.AddStyleAttribute(HtmlTextWriterStyle.BackgroundColor, "white");
base.AddAttributesToRender(writer);
}
protected override void RenderContents(HtmlTextWriter writer)
{
writer.Write(string.Format("<div id=\"{0}_h\" style=\"height:20px;border-right: #eaf0f6 1px solid; padding-right: 2px; padding-left: 2px;padding-bottom: 2px; margin: 0px; cursor: pointer; padding-top: 2px; border-bottom: #ccc 1px solid;background-color: {1}\">", ID, ColorTranslator.ToHtml(headerBgColor)));
writer.Write("<table border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"100%;height:20px\">");
writer.Write(string.Format("<tr><td style=\"text-align:left;font-weight:bold;padding-left:3px;padding-top:3px\">{0}</td><td style=\"text-align:right;padding-right:3px\"><img src=\"{1}\" onclick=\"_IG_closePanel('{2}');\" alt=\"关闭\" style=\"cursor:pointer\"/></td></tr>", headerOnClientClick == string.Empty ? Title : "<a href=\"#\" onclick=\"" + headerOnClientClick + "\" style=\"text-decoration:underline\">" + Title + "</a>", Page.ClientScript.GetWebResourceUrl(this.GetType(), "pqmagic.Common.UI.Resources.close.gif"), ID));
writer.Write("</table>");
writer.Write("</div>");
writer.Write("<div style=\"overflow:scroll\">");
base.RenderContents(writer);
writer.Write("</div>");
}
}
}
using System;
using System.Reflection;
using System.Security.Permissions;
using System.Web;
using System.Drawing.Design;
using System.Web.UI;
namespace pqmagic.Common.UI
{
[AspNetHostingPermission(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal), AspNetHostingPermission(SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
public class DragDropPanelCollection : ControlCollection
{
public DragDropPanelCollection(Control owner):base(owner)
{
}
public override void Add(Control child)
{
if (!(child is DragDropPanel))
{
throw new ArgumentException("该集合只能添加DragDropPanel类型的控件");
}
base.Add(child);
}
public override void AddAt(int index, Control child)
{
if (!(child is DragDropPanel))
{
throw new ArgumentException("该集合只能添加DragDropPanel类型的控件");
}
base.AddAt(index, child);
}
public new DragDropPanel this[int index]
{
get
{
return (DragDropPanel)base[index];
}
}
}
}
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