结合Jst和Css实现了在Asp.net下XP风格的下拉菜单，效果图如下：
实现的步骤及源码如下：
Default.aspx代码：
1
<%@ Page language="c#" Codebehind="default.aspx.cs" AutoEventWireup="false" Inherits="PopupMenuControlSample._default" %>
2
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
3<HTML>
4 <HEAD>
5 <title>PopupMenu control sample</title>
6 <meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">
7 <meta content="C#" name="CODE_LANGUAGE">
8 <meta content="JavaScript" name="vs_defaultClientScript">
9 <meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">
10 <LINK href="PopupMenuSample.css" type="text/css" rel="Stylesheet">
11 </HEAD>
12 <body bgColor="#ffffcc" MS_POSITIONING="GridLayout">
13 <form id="MainForm" method="post" runat="server">
14 <asp:label id="PopupMenuOwner" Runat="server" CssClass="MainText">Click on me to show the popup menu</asp:label>
15 </form>
16 </body>
17</HTML>
18
<%@ Page language="c#" Codebehind="default.aspx.cs" AutoEventWireup="false" Inherits="PopupMenuControlSample._default" %>
2
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >3
<HTML>4
<HEAD>5
<title>PopupMenu control sample</title>6
<meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">7
<meta content="C#" name="CODE_LANGUAGE">8
<meta content="JavaScript" name="vs_defaultClientScript">9
<meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">10
<LINK href="PopupMenuSample.css" type="text/css" rel="Stylesheet">11
</HEAD>12
<body bgColor="#ffffcc" MS_POSITIONING="GridLayout">13
<form id="MainForm" method="post" runat="server">14
<asp:label id="PopupMenuOwner" Runat="server" CssClass="MainText">Click on me to show the popup menu</asp:label>15
</form>16
</body>17
</HTML>18
Default.aspx.cs代码：
1using System;
2using System.Collections;
3using System.ComponentModel;
4using System.Data;
5using System.Drawing;
6using System.Web;
7using System.Web.SessionState;
8using System.Web.UI;
9using System.Web.UI.WebControls;
10using System.Web.UI.HtmlControls;
11using UIControl;
12
13namespace PopupMenuControlSample
14{
15
/// <summary>
16
/// Summary description for _default.
17
/// </summary>
18 public class _default : System.Web.UI.Page
19 {
20 const string ControlContainer = "MainForm";
21 const string ClickedMessage = "<BR/><BR/>The menu item '{0}' has been selected by the user.";
22 const string NoMenuItemClicked = "<BR/><BR/>No menu item has been clicked yet.";
23 const string MessageStyle = "Message";
24 const string MenuControlID = "PopupMenu";
25 const MenuItemDirection MenuDirection = MenuItemDirection.Vertical;
26 const string PopupMenuParentID = "PopupMenuOwner";
27 const string Services = "Services";
28 const string ServicesAltText = "available services";
29 const string ServicesName = "Services";
30 const string ServicesJavaScript = null;
31 const string ServicesImageUrl = null;
32 const MenuItemDirection ServicesDirection = MenuItemDirection.Vertical;
33 const string ServicesTableID = "Services";
34 const string AboutMe = "About me";
35 const string AboutMeAltText = "about me";
36 const string AboutMeName = "AboutMe";
37 const string AboutMeJavaScript = null;
38 const string AboutMeImageUrl = null;
39 const MenuItemDirection AboutMeDirection = MenuItemDirection.Vertical;
40 const string AboutMeTableID = "AboutMe";
41 const string UsefulLinks = "Useful links";
42 const string UsefulLinksAltText = "useful links";
43 const string UsefulLinksName = "UsefulLinks";
44 const string UsefulLinksJavaScript = null;
45 const string UsefulLinksImageUrl = null;
46 const MenuItemDirection UsefulLinksDirection = MenuItemDirection.Vertical;
47 const string UsefulLinksTableID = "UsefulLinks";
48 const string Presenter = ".NET Presenter";
49 const string PresenterAltText = "presenter for your .NET usergroup or show";
50 const string PresenterName = "Presenter";
51 const string PresenterJavaScript = null;
52 const string PresenterImageUrl = "images/presenter.gif";
53 const string PresenterTableID = "Presenter";
54 const string Author = ".NET author";
55 const string AuthorAltText = "author for your .NET magazine";
56 const string AuthorName = "Author";
57 const string AuthorJavaScript = "window.alert('Klaus Salchner, Chief Enterprise Architect');";
58 const string AuthorImageUrl = null;
59 const string AuthorTableID = "Author";
60 const string Architect = ".NET architecture review";
61 const string ArchitectAltText = "architecture review for your .NET project";
62 const string ArchitectName = "Architect";
63 const string ArchitectJavaScript = null;
64 const string ArchitectImageUrl = "images/review.gif";
65 const string ArchitectTableID = "Architect";
66 const string Resume = "Resume";
67 const string ResumeAltText = "my resume";
68 const string ResumeName = "Resume";
69 const string ResumeJavaScript = null;
70 const string ResumeImageUrl = null;
71 const string ResumeTableID = "Resume";
72 const string ContactMe = "Contact me";
73 const string ContactMeAltText = "contact me";
74 const string ContactMeName = "ContactMe";
75 const string ContactMeJavaScript = null;
76 const string ContactMeImageUrl = "images/contactme.gif";
77 const string ContactMeTableID = "ContactMe";
78 const string CodeGuru = "CodeGuru";
79 const string CodeGuruAltText = "CodeGuru";
80 const string CodeGuruName = "CodeGuru";
81 const string CodeGuruJavaScript = null;
82 const string CodeGuruImageUrl = "images/codeguru.gif";
83 const string CodeGuruTableID = "CodeGuru";
84 const string DeveloperLand = "DeveloperLand";
85 const string DeveloperLandAltText = "DeveloperLand";
86 const string DeveloperLandName = "DeveloperLand";
87 const string DeveloperLandJavaScript = null;
88 const string DeveloperLandImageUrl = "images/developerland.gif";
89 const string DeveloperLandTableID = "DeveloperLand";
90 const string Msdn = "MSDN";
91 const string MsdnAltText = "MSDN";
92 const string MsdnName = "Msdn";
93 const string MsdnJavaScript = null;
94 const string MsdnImageUrl = "images/msdn.gif";
95 const string MsdnTableID = "Msdn";
96 const string GotDotNet = "Got-Dot-Net";
97 const string GotDotNetAltText = "Got-Dot-Net";
98 const string GotDotNetName = "GotDotNet";
99 const string GotDotNetJavaScript = null;
100 const string GotDotNetImageUrl = null;
101 const string GotDotNetTableID = "GotDotNet";
102 private Label Message;
103 protected System.Web.UI.WebControls.Label PopupMenuOwner;
104
105
Web Form Designer generated code
125
126 /// <summary>
127 /// initialize the form; allows us to add new controls to it
128 /// </summary>
129 /// <param name="sender">event sender</param>
130 /// <param name="e">event argument</param>
131 private void Page_Init(object sender, System.EventArgs e)
132 {
133 // create a new popup menu control to display
134 PopupMenuControl MyPopupMenu = new PopupMenuControl();
135 MyPopupMenu.MenuDirection = MenuDirection;
136 MyPopupMenu.MenuShowSubMenuIndicator = true;
137 MyPopupMenu.PopupMenuParentID = PopupMenuParentID;
138 MyPopupMenu.ShowVerticalMenuImageBar = true;
139 MyPopupMenu.ID = MenuControlID;
140
141 // create the popup-menu items
142 MyPopupMenu.PopupMenu.Add(new PopupMenuItemDetails(Services, ServicesAltText, ServicesName, ServicesJavaScript, ServicesImageUrl, null, ServicesDirection, ServicesTableID, true));
143 MyPopupMenu.PopupMenu.Add(new PopupMenuItemDetails(AboutMe, AboutMeAltText, AboutMeName, AboutMeJavaScript, AboutMeImageUrl, null, AboutMeDirection, AboutMeTableID, true));
144 MyPopupMenu.PopupMenu.Add(new PopupMenuItemDetails(UsefulLinks, UsefulLinksAltText, UsefulLinksName, UsefulLinksJavaScript, UsefulLinksImageUrl, null, UsefulLinksDirection, UsefulLinksTableID, true));
145
146 // create the services sub-menu
147 MyPopupMenu.PopupMenu[0].PopupSubMenus = new PopupMenuItemDetailsCollection();
148 MyPopupMenu.PopupMenu[0].PopupSubMenus.Add(new PopupMenuItemDetails(Presenter, PresenterAltText, PresenterName, PresenterJavaScript, PresenterImageUrl, null, MenuItemDirection.Vertical, PresenterTableID, false));
149 MyPopupMenu.PopupMenu[0].PopupSubMenus.Add(new PopupMenuItemDetails(Author, AuthorAltText, AuthorName, AuthorJavaScript, AuthorImageUrl, null, MenuItemDirection.Vertical, AuthorTableID, false));
150 MyPopupMenu.PopupMenu[0].PopupSubMenus.Add(new PopupMenuItemDetails(Architect, ArchitectAltText, ArchitectName, ArchitectJavaScript, ArchitectImageUrl, null, MenuItemDirection.Vertical, ArchitectTableID, false));
151
152 // create the about-me sub-menu
153 MyPopupMenu.PopupMenu[1].PopupSubMenus = new PopupMenuItemDetailsCollection();
154 MyPopupMenu.PopupMenu[1].PopupSubMenus.Add(new PopupMenuItemDetails(Resume, ResumeAltText, ResumeName, ResumeJavaScript, ResumeImageUrl, null, MenuItemDirection.Vertical, ResumeTableID, false));
155 MyPopupMenu.PopupMenu[1].PopupSubMenus.Add(new PopupMenuItemDetails(ContactMe, ContactMeAltText, ContactMeName, ContactMeJavaScript, ContactMeImageUrl, null, MenuItemDirection.Vertical, ContactMeTableID, false));
156
157 // create the useful links sub-menu
158 MyPopupMenu.PopupMenu[2].PopupSubMenus = new PopupMenuItemDetailsCollection();
159 MyPopupMenu.PopupMenu[2].PopupSubMenus.Add(new PopupMenuItemDetails(DeveloperLand, DeveloperLandAltText, DeveloperLandName, DeveloperLandJavaScript, DeveloperLandImageUrl, null, MenuItemDirection.Vertical, DeveloperLandTableID, false));
160 MyPopupMenu.PopupMenu[2].PopupSubMenus.Add(new PopupMenuItemDetails(CodeGuru, CodeGuruAltText, CodeGuruName, CodeGuruJavaScript, CodeGuruImageUrl, null, MenuItemDirection.Vertical, CodeGuruTableID, false));
161 MyPopupMenu.PopupMenu[2].PopupSubMenus.Add(new PopupMenuItemDetails(GotDotNet, GotDotNetAltText, GotDotNetName, GotDotNetJavaScript, GotDotNetImageUrl, null, MenuItemDirection.Vertical, GotDotNetTableID, false));
162 MyPopupMenu.PopupMenu[2].PopupSubMenus.Add(PopupMenuItemDetails.PopupMenuItemSeparator());
163 MyPopupMenu.PopupMenu[2].PopupSubMenus.Add(new PopupMenuItemDetails(Msdn, MsdnAltText, MsdnName, MsdnJavaScript, MsdnImageUrl, null, MenuItemDirection.Vertical, MsdnTableID, false));
164
165 // find the cell we use to add our content
166 Control ContentCell = BaseControl.FindControl(Controls, ControlContainer);
167
168 // event handler called when a menu item has been clicked
169 MyPopupMenu.MenuClicked += new MenuClicked(MyPopupMenu_MenuClicked);
170
171 // if we found the content cell then let's add the popup menu control to it
172 if (ContentCell != null)
173 ContentCell.Controls.Add(MyPopupMenu);
174
175 // the label which shows which menu item has been clicked
176 Message = BaseControl.CreateLabel(Controls, NoMenuItemClicked);
177 Message.CssClass = MessageStyle;
178 }
179
180 /// <summary>
181 /// event handler called when a menu item has been clicked
182 /// </summary>
183 /// <param name="Controls">the menu controls collection</param>
184 /// <param name="ClickedMenuItem">the selected menu item</param>
185 void MyPopupMenu_MenuClicked(ControlCollection Controls, MenuItemDetails ClickedMenuItem)
186 {
187 Message.Text = String.Format(ClickedMessage, ClickedMenuItem.DisplayText);
188 }
189 }
190
}
191
using System;2
using System.Collections;3
using System.ComponentModel;4
using System.Data;5
using System.Drawing;6
using System.Web;7
using System.Web.SessionState;8
using System.Web.UI;9
using System.Web.UI.WebControls;10
using System.Web.UI.HtmlControls;11
using UIControl;12
13
namespace PopupMenuControlSample14
{15
/// <summary>16
/// Summary description for _default.17
/// </summary>18
public class _default : System.Web.UI.Page19
{20
const string ControlContainer = "MainForm";21
const string ClickedMessage = "<BR/><BR/>The menu item '{0}' has been selected by the user.";22
const string NoMenuItemClicked = "<BR/><BR/>No menu item has been clicked yet.";23
const string MessageStyle = "Message";24
const string MenuControlID = "PopupMenu";25
const MenuItemDirection MenuDirection = MenuItemDirection.Vertical;26
const string PopupMenuParentID = "PopupMenuOwner";27
const string Services = "Services";28
const string ServicesAltText = "available services";29
const string ServicesName = "Services";30
const string ServicesJavaScript = null;31
const string ServicesImageUrl = null;32
const MenuItemDirection ServicesDirection = MenuItemDirection.Vertical;33
const string ServicesTableID = "Services";34
const string AboutMe = "About me";35
const string AboutMeAltText = "about me";36
const string AboutMeName = "AboutMe";37
const string AboutMeJavaScript = null;38
const string AboutMeImageUrl = null;39
const MenuItemDirection AboutMeDirection = MenuItemDirection.Vertical;40
const string AboutMeTableID = "AboutMe";41
const string UsefulLinks = "Useful links";42
const string UsefulLinksAltText = "useful links";43
const string UsefulLinksName = "UsefulLinks";44
const string UsefulLinksJavaScript = null;45
const string UsefulLinksImageUrl = null;46
const MenuItemDirection UsefulLinksDirection = MenuItemDirection.Vertical;47
const string UsefulLinksTableID = "UsefulLinks";48
const string Presenter = ".NET Presenter";49
const string PresenterAltText = "presenter for your .NET usergroup or show";50
const string PresenterName = "Presenter";51
const string PresenterJavaScript = null;52
const string PresenterImageUrl = "images/presenter.gif";53
const string PresenterTableID = "Presenter";54
const string Author = ".NET author";55
const string AuthorAltText = "author for your .NET magazine";56
const string AuthorName = "Author";57
const string AuthorJavaScript = "window.alert('Klaus Salchner, Chief Enterprise Architect');";58
const string AuthorImageUrl = null;59
const string AuthorTableID = "Author";60
const string Architect = ".NET architecture review";61
const string ArchitectAltText = "architecture review for your .NET project";62
const string ArchitectName = "Architect";63
const string ArchitectJavaScript = null;64
const string ArchitectImageUrl = "images/review.gif";65
const string ArchitectTableID = "Architect";66
const string Resume = "Resume";67
const string ResumeAltText = "my resume";68
const string ResumeName = "Resume";69
const string ResumeJavaScript = null;70
const string ResumeImageUrl = null;71
const string ResumeTableID = "Resume";72
const string ContactMe = "Contact me";73
const string ContactMeAltText = "contact me";74
const string ContactMeName = "ContactMe";75
const string ContactMeJavaScript = null;76
const string ContactMeImageUrl = "images/contactme.gif";77
const string ContactMeTableID = "ContactMe";78
const string CodeGuru = "CodeGuru";79
const string CodeGuruAltText = "CodeGuru";80
const string CodeGuruName = "CodeGuru";81
const string CodeGuruJavaScript = null;82
const string CodeGuruImageUrl = "images/codeguru.gif";83
const string CodeGuruTableID = "CodeGuru";84
const string DeveloperLand = "DeveloperLand";85
const string DeveloperLandAltText = "DeveloperLand";86
const string DeveloperLandName = "DeveloperLand";87
const string DeveloperLandJavaScript = null;88
const string DeveloperLandImageUrl = "images/developerland.gif";89
const string DeveloperLandTableID = "DeveloperLand";90
const string Msdn = "MSDN";91
const string MsdnAltText = "MSDN";92
const string MsdnName = "Msdn";93
const string MsdnJavaScript = null;94
const string MsdnImageUrl = "images/msdn.gif";95
const string MsdnTableID = "Msdn";96
const string GotDotNet = "Got-Dot-Net";97
const string GotDotNetAltText = "Got-Dot-Net";98
const string GotDotNetName = "GotDotNet";99
const string GotDotNetJavaScript = null;100
const string GotDotNetImageUrl = null;101
const string GotDotNetTableID = "GotDotNet";102
private Label Message;103
protected System.Web.UI.WebControls.Label PopupMenuOwner;104
105
Web Form Designer generated code125
126
/// <summary>127
/// initialize the form; allows us to add new controls to it128
/// </summary>129
/// <param name="sender">event sender</param>130
/// <param name="e">event argument</param>131
private void Page_Init(object sender, System.EventArgs e)132
{133
// create a new popup menu control to display134
PopupMenuControl MyPopupMenu = new PopupMenuControl();135
MyPopupMenu.MenuDirection = MenuDirection;136
MyPopupMenu.MenuShowSubMenuIndicator = true;137
MyPopupMenu.PopupMenuParentID = PopupMenuParentID;138
MyPopupMenu.ShowVerticalMenuImageBar = true;139
MyPopupMenu.ID = MenuControlID;140
141
// create the popup-menu items142
MyPopupMenu.PopupMenu.Add(new PopupMenuItemDetails(Services, ServicesAltText, ServicesName, ServicesJavaScript, ServicesImageUrl, null, ServicesDirection, ServicesTableID, true));143
MyPopupMenu.PopupMenu.Add(new PopupMenuItemDetails(AboutMe, AboutMeAltText, AboutMeName, AboutMeJavaScript, AboutMeImageUrl, null, AboutMeDirection, AboutMeTableID, true));144
MyPopupMenu.PopupMenu.Add(new PopupMenuItemDetails(UsefulLinks, UsefulLinksAltText, UsefulLinksName, UsefulLinksJavaScript, UsefulLinksImageUrl, null, UsefulLinksDirection, UsefulLinksTableID, true));145
146
// create the services sub-menu147
MyPopupMenu.PopupMenu[0].PopupSubMenus = new PopupMenuItemDetailsCollection();148
MyPopupMenu.PopupMenu[0].PopupSubMenus.Add(new PopupMenuItemDetails(Presenter, PresenterAltText, PresenterName, PresenterJavaScript, PresenterImageUrl, null, MenuItemDirection.Vertical, PresenterTableID, false));149
MyPopupMenu.PopupMenu[0].PopupSubMenus.Add(new PopupMenuItemDetails(Author, AuthorAltText, AuthorName, AuthorJavaScript, AuthorImageUrl, null, MenuItemDirection.Vertical, AuthorTableID, false));150
MyPopupMenu.PopupMenu[0].PopupSubMenus.Add(new PopupMenuItemDetails(Architect, ArchitectAltText, ArchitectName, ArchitectJavaScript, ArchitectImageUrl, null, MenuItemDirection.Vertical, ArchitectTableID, false));151
152
// create the about-me sub-menu153
MyPopupMenu.PopupMenu[1].PopupSubMenus = new PopupMenuItemDetailsCollection();154
MyPopupMenu.PopupMenu[1].PopupSubMenus.Add(new PopupMenuItemDetails(Resume, ResumeAltText, ResumeName, ResumeJavaScript, ResumeImageUrl, null, MenuItemDirection.Vertical, ResumeTableID, false));155
MyPopupMenu.PopupMenu[1].PopupSubMenus.Add(new PopupMenuItemDetails(ContactMe, ContactMeAltText, ContactMeName, ContactMeJavaScript, ContactMeImageUrl, null, MenuItemDirection.Vertical, ContactMeTableID, false));156
157
// create the useful links sub-menu158
MyPopupMenu.PopupMenu[2].PopupSubMenus = new PopupMenuItemDetailsCollection();159
MyPopupMenu.PopupMenu[2].PopupSubMenus.Add(new PopupMenuItemDetails(DeveloperLand, DeveloperLandAltText, DeveloperLandName, DeveloperLandJavaScript, DeveloperLandImageUrl, null, MenuItemDirection.Vertical, DeveloperLandTableID, false));160
MyPopupMenu.PopupMenu[2].PopupSubMenus.Add(new PopupMenuItemDetails(CodeGuru, CodeGuruAltText, CodeGuruName, CodeGuruJavaScript, CodeGuruImageUrl, null, MenuItemDirection.Vertical, CodeGuruTableID, false));161
MyPopupMenu.PopupMenu[2].PopupSubMenus.Add(new PopupMenuItemDetails(GotDotNet, GotDotNetAltText, GotDotNetName, GotDotNetJavaScript, GotDotNetImageUrl, null, MenuItemDirection.Vertical, GotDotNetTableID, false));162
MyPopupMenu.PopupMenu[2].PopupSubMenus.Add(PopupMenuItemDetails.PopupMenuItemSeparator());163
MyPopupMenu.PopupMenu[2].PopupSubMenus.Add(new PopupMenuItemDetails(Msdn, MsdnAltText, MsdnName, MsdnJavaScript, MsdnImageUrl, null, MenuItemDirection.Vertical, MsdnTableID, false));164
165
// find the cell we use to add our content166
Control ContentCell = BaseControl.FindControl(Controls, ControlContainer);167
168
// event handler called when a menu item has been clicked169
MyPopupMenu.MenuClicked += new MenuClicked(MyPopupMenu_MenuClicked);170
171
// if we found the content cell then let's add the popup menu control to it172
if (ContentCell != null)173
ContentCell.Controls.Add(MyPopupMenu);174
175
// the label which shows which menu item has been clicked176
Message = BaseControl.CreateLabel(Controls, NoMenuItemClicked);177
Message.CssClass = MessageStyle;178
}179
180
/// <summary>181
/// event handler called when a menu item has been clicked182
/// </summary>183
/// <param name="Controls">the menu controls collection</param>184
/// <param name="ClickedMenuItem">the selected menu item</param>185
void MyPopupMenu_MenuClicked(ControlCollection Controls, MenuItemDetails ClickedMenuItem)186
{187
Message.Text = String.Format(ClickedMessage, ClickedMenuItem.DisplayText);188
} 189
}190
}191
PopupMenuControl.js代码：
1
2var VisibleSubMenus = '';
3var MenuTimer = 0;
4var CloseTimer = 0;
5
6
7function EnterMenuCell(MenuCell,SubMenuTable)
8{
9 // if the sub-menu-table is not displayed at the moment
10 if (SubMenuTable.style.display == 'none')
11 {
12 // then display it now
13 SubMenuTable.style.display = '';
14
15 // add this to the list of visible sub-menus; this is important if the user browses
16 // multiple cascaded sub-menus
17 if (VisibleSubMenus.length == 0)
18 VisibleSubMenus += SubMenuTable.id;
19 else
20 VisibleSubMenus += ',' + SubMenuTable.id;
21 }
22}
23
24//
25// the user moves the mouse outside the menu cell
26//
27function LeaveMenuCell(MenuCell,SubMenuTable)
28{
29
30 if (MenuTimer == 0)
31 MenuTimer = window.setInterval("CheckIfSubMenuToClose(" + SubMenuTable.id + ")", 20);
32}
33
34
35function LeaveSubMenuTable(SubMenuTable)
36{
37 // get the list of visible sub-menus
38 var VisibleSubMenusArray = VisibleSubMenus.split(",");
39
40 // get the last visible sub-menu
41 var LastVisibleSubMenu = VisibleSubMenusArray[VisibleSubMenusArray.length - 1];
42
43
44 if ((SubMenuTable.style.display != 'none') & (LastVisibleSubMenu == SubMenuTable.id))
45 {
46 // closes the sub-menu table
47 CloseSubMenu(SubMenuTable);
48
49
50 if (MenuTimer == 0)
51 MenuTimer = window.setInterval("CloseAllSubMenus()", 20);
52 }
53}
54
55
56function CloseAllSubMenus()
57{
58 // first clear the timer
59 if (MenuTimer != 0)
60 {
61 window.clearInterval(MenuTimer);
62 MenuTimer = 0;
63 }
64
65 // check if we have any sub-menus open
66 if (VisibleSubMenus.length > 0)
67 {
68 // get the list of visible sub-menus
69 var VisibleSubMenusArray = VisibleSubMenus.split(",");
70
71 // now loop through all visible sub-menus and close them too
72 for (Count=0; Count < VisibleSubMenusArray.length; Count++)
73 {
74 // get a reference to the visible sub-menu
75 var SubMenu = document.getElementById(VisibleSubMenusArray[Count]);
76
77 // and now hide it
78 SubMenu.style.display = 'none';
79 }
80
81 // reset the list of visible sub-menus
82 VisibleSubMenus = '';
83 }
84}
85
86//
87// the user moves the mosue cursor over the sub-menu table
88//
89function EnterSubMenuTable(SubMenuTable)
90{
91
92 if (MenuTimer != 0)
93 {
94 window.clearInterval(MenuTimer);
95 MenuTimer = 0;
96 }
97}
98
99
100function CheckIfSubMenuToClose(SubMenuTable)
101{
102 // first clear the timer itself
103 if (MenuTimer != 0)
104 {
105 window.clearInterval(MenuTimer);
106 MenuTimer = 0;
107 }
108
109 // now close the sub-menu table
110 CloseSubMenu(SubMenuTable);
111}
112
113//
114// closes the sub-menu table and removes it from the list of visible sub-menus
115//
116function CloseSubMenu(SubMenuTable)
117{
118 // now close the sub-menu
119 SubMenuTable.style.display = 'none';
120
121 // get the list of visible sub-menus
122 var VisibleSubMenusArray = VisibleSubMenus.split(",");
123
124 // now we rebuild the list of visible sub-menus by excluding the sub-menu we
125 // just closed
126 VisibleSubMenus = '';
127
128 // loop through all existing sub-menus
129 for (Count=0; Count < VisibleSubMenusArray.length; Count++)
130
131 // if the sub-menu is the same as the one we just closed then ignore it;
132 // otherwise add it again
133 if (VisibleSubMenusArray[Count] != SubMenuTable.id)
134 if (VisibleSubMenus.length > 0)
135 VisibleSubMenus += "," + VisibleSubMenusArray[Count];
136 else
137 VisibleSubMenus = VisibleSubMenusArray[Count];
138}
139
140
141function SetControlPosition(SubMenuTable,ParentTable,ParentCell,ParentMenuDirection,OffsetX,OffsetY)
142{
143 // we position the control absolute
144 SubMenuTable.style.position = 'absolute';
145
146 // parent menu is horizontal, so we position the sub-menu at left/bottom
147 if (ParentMenuDirection == 'Horizontal')
148 {
149 SubMenuTable.style.left = ParentTable.offsetLeft + ParentCell.offsetLeft - 1;
150 SubMenuTable.style.top = ParentTable.offsetTop + ParentTable.offsetHeight - 1;
151 }
152 else
153
154 // parent menu is vertical, so we position the sub-menu at right/top
155 if (ParentMenuDirection == 'Vertical')
156 {
157 SubMenuTable.style.left = ParentTable.offsetLeft + ParentTable.offsetWidth - 1;
158 SubMenuTable.style.top = ParentTable.offsetTop + ParentCell.offsetTop - 1;
159 }
160
161 // there is no parent-menu; this is a popup menu which will be positioned in the
162 // middle of the owning control
163 else
164 {
165 SubMenuTable.style.left = ParentTable.offsetLeft + (ParentTable.offsetWidth / 2) + 1 + Number(OffsetX);
166 SubMenuTable.style.top = ParentTable.offsetTop + (ParentTable.offsetHeight / 2) + 1 + Number(OffsetY);
167
168 // add any body margin we have
169 SubMenuTable.style.left = Number(SubMenuTable.style.left.replace('px','')) + Number(document.body.leftMargin);
170 SubMenuTable.style.top = Number(SubMenuTable.style.top.replace('px','')) + Number(document.body.topMargin);
171 }
172}
173
174
175function ShowPopupMenu(PopupOwnerControl,PopupTableControl,OffsetX,OffsetY)
176{
177 // position the popup menu in the middle of the owner control
178 SetControlPosition(PopupTableControl, PopupOwnerControl, null, 'popup', OffsetX, OffsetY);
179
180 // show the popup-menu
181 PopupTableControl.style.display = '';
182
183 // give the popup menu table the focus so we know when the user clicks anywhere
184 // else (the control looses then the focus
185 PopupTableControl.focus();
186}
187
188
189function ClosePopupMenu(PopupOwnerControl,PopupTableControl)
190{
191 if (CloseTimer == 0)
192 CloseTimer = window.setInterval("ClosePopupMenuDelayed(" + PopupOwnerControl.id + "," + PopupTableControl.id + ")", 190);
193}
194
195
196function ClosePopupMenuDelayed(PopupOwnerControl,PopupTableControl)
197{
198 // clears first the timer
199 if (CloseTimer != 0)
200 {
201 window.clearInterval(CloseTimer);
202 CloseTimer = 0;
203 }
204
205 // we hide the popup menu
206 PopupTableControl.style.display = 'none';
207
208 // close any open sub-menu
209 CloseAllSubMenus();
210}
211
2
var VisibleSubMenus = '';3
var MenuTimer = 0;4
var CloseTimer = 0;5
6
7
function EnterMenuCell(MenuCell,SubMenuTable)8
{9
// if the sub-menu-table is not displayed at the moment10
if (SubMenuTable.style.display == 'none')11
{12
// then display it now13
SubMenuTable.style.display = '';14
15
// add this to the list of visible sub-menus; this is important if the user browses16
// multiple cascaded sub-menus17
if (VisibleSubMenus.length == 0)18
VisibleSubMenus += SubMenuTable.id;19
else20
VisibleSubMenus += ',' + SubMenuTable.id;21
}22
}23
24
//25
// the user moves the mouse outside the menu cell26
//27
function LeaveMenuCell(MenuCell,SubMenuTable)28
{29
30
if (MenuTimer == 0)31
MenuTimer = window.setInterval("CheckIfSubMenuToClose(" + SubMenuTable.id + ")", 20);32
}33
34
35
function LeaveSubMenuTable(SubMenuTable)36
{37
// get the list of visible sub-menus38
var VisibleSubMenusArray = VisibleSubMenus.split(",");39
40
// get the last visible sub-menu41
var LastVisibleSubMenu = VisibleSubMenusArray[VisibleSubMenusArray.length - 1];42
43
44
if ((SubMenuTable.style.display != 'none') & (LastVisibleSubMenu == SubMenuTable.id))45
{46
// closes the sub-menu table47
CloseSubMenu(SubMenuTable);48
49
50
if (MenuTimer == 0)51
MenuTimer = window.setInterval("CloseAllSubMenus()", 20);52
}53
}54
55
56
function CloseAllSubMenus()57
{58
// first clear the timer59
if (MenuTimer != 0)60
{61
window.clearInterval(MenuTimer);62
MenuTimer = 0;63
}64
65
// check if we have any sub-menus open66
if (VisibleSubMenus.length > 0)67
{68
// get the list of visible sub-menus69
var VisibleSubMenusArray = VisibleSubMenus.split(",");70
71
// now loop through all visible sub-menus and close them too72
for (Count=0; Count < VisibleSubMenusArray.length; Count++)73
{74
// get a reference to the visible sub-menu75
var SubMenu = document.getElementById(VisibleSubMenusArray[Count]);76
77
// and now hide it78
SubMenu.style.display = 'none';79
}80
81
// reset the list of visible sub-menus82
VisibleSubMenus = '';83
}84
}85
86
//87
// the user moves the mosue cursor over the sub-menu table88
//89
function EnterSubMenuTable(SubMenuTable)90
{91
92
if (MenuTimer != 0)93
{94
window.clearInterval(MenuTimer);95
MenuTimer = 0;96
}97
}98
99
100
function CheckIfSubMenuToClose(SubMenuTable)101
{102
// first clear the timer itself103
if (MenuTimer != 0)104
{105
window.clearInterval(MenuTimer);106
MenuTimer = 0;107
}108
109
// now close the sub-menu table110
CloseSubMenu(SubMenuTable);111
}112
113
//114
// closes the sub-menu table and removes it from the list of visible sub-menus115
//116
function CloseSubMenu(SubMenuTable)117
{118
// now close the sub-menu119
SubMenuTable.style.display = 'none';120
121
// get the list of visible sub-menus122
var VisibleSubMenusArray = VisibleSubMenus.split(",");123
124
// now we rebuild the list of visible sub-menus by excluding the sub-menu we 125
// just closed126
VisibleSubMenus = '';127
128
// loop through all existing sub-menus129
for (Count=0; Count < VisibleSubMenusArray.length; Count++)130
131
// if the sub-menu is the same as the one we just closed then ignore it;132
// otherwise add it again133
if (VisibleSubMenusArray[Count] != SubMenuTable.id)134
if (VisibleSubMenus.length > 0)135
VisibleSubMenus += "," + VisibleSubMenusArray[Count];136
else137
VisibleSubMenus = VisibleSubMenusArray[Count];138
}139
140
141
function SetControlPosition(SubMenuTable,ParentTable,ParentCell,ParentMenuDirection,OffsetX,OffsetY)142
{143
// we position the control absolute144
SubMenuTable.style.position = 'absolute';145
146
// parent menu is horizontal, so we position the sub-menu at left/bottom147
if (ParentMenuDirection == 'Horizontal')148
{149
SubMenuTable.style.left = ParentTable.offsetLeft + ParentCell.offsetLeft - 1;150
SubMenuTable.style.top = ParentTable.offsetTop + ParentTable.offsetHeight - 1;151
}152
else153
154
// parent menu is vertical, so we position the sub-menu at right/top155
if (ParentMenuDirection == 'Vertical')156
{157
SubMenuTable.style.left = ParentTable.offsetLeft + ParentTable.offsetWidth - 1;158
SubMenuTable.style.top = ParentTable.offsetTop + ParentCell.offsetTop - 1;159
}160
161
// there is no parent-menu; this is a popup menu which will be positioned in the162
// middle of the owning control163
else164
{165
SubMenuTable.style.left = ParentTable.offsetLeft + (ParentTable.offsetWidth / 2) + 1 + Number(OffsetX);166
SubMenuTable.style.top = ParentTable.offsetTop + (ParentTable.offsetHeight / 2) + 1 + Number(OffsetY);167
168
// add any body margin we have169
SubMenuTable.style.left = Number(SubMenuTable.style.left.replace('px','')) + Number(document.body.leftMargin);170
SubMenuTable.style.top = Number(SubMenuTable.style.top.replace('px','')) + Number(document.body.topMargin);171
}172
}173
174
175
function ShowPopupMenu(PopupOwnerControl,PopupTableControl,OffsetX,OffsetY)176
{177
// position the popup menu in the middle of the owner control178
SetControlPosition(PopupTableControl, PopupOwnerControl, null, 'popup', OffsetX, OffsetY);179
180
// show the popup-menu181
PopupTableControl.style.display = '';182
183
// give the popup menu table the focus so we know when the user clicks anywhere184
// else (the control looses then the focus185
PopupTableControl.focus();186
}187
188
189
function ClosePopupMenu(PopupOwnerControl,PopupTableControl)190
{191
if (CloseTimer == 0)192
CloseTimer = window.setInterval("ClosePopupMenuDelayed(" + PopupOwnerControl.id + "," + PopupTableControl.id + ")", 190);193
}194
195
196
function ClosePopupMenuDelayed(PopupOwnerControl,PopupTableControl)197
{198
// clears first the timer199
if (CloseTimer != 0)200
{201
window.clearInterval(CloseTimer);202
CloseTimer = 0;203
}204
205
// we hide the popup menu206
PopupTableControl.style.display = 'none';207
208
// close any open sub-menu209
CloseAllSubMenus();210
}211
PopupMenuControl.css代码：
1.PopupMenuTableStyle
2{
3 border: groove 2px white;
4 background-color: black;
5 position: relative;
6 left: 0px;
7 top: 0px;
8}
9.PopupMenuRowStyle
10{
11 vertical-align: middle;
12}
13.PopupMenuCellStyle
14{
15 background-color: #ececec;
16 text-align: left;
17 width: 180px;
18 height: 20px;
19}
20.PopupMenuCellHighlightedStyle
21{
22 background-color: #ccccff;
23 text-align: left;
24 width: 180px;
25 height: 20px;
26}
27.PopupMenuLinkStyle
28{
29 font: normal normal bold small/normal Arial;
30 text-decoration: none;
31 white-space: nowrap;
32 color: blue;
33 cursor: hand;
34 line-height: 18px;
35}
36.PopupMenuLinkHighlightedStyle
37{
38 font: normal normal bolder small/normal Arial;
39 text-decoration: none;
40 white-space: nowrap;
41 color: #ffffcc;
42 color: blue;
43 cursor: hand;
44 line-height: 18px;
45}
46.MenuSeparatorCellStyle
47{
48 background-color: #ececec;
49 height: 1px;
50 padding: 0px 0px 0px 0px;
51 margin: 0px 0px 0px 0px;
52}
53.MenuSeparatorStyle
54{
55 border-top: ridge 1px;
56 width: 100%;
57 color: white;
58 height: 1px;
59}
60.PopupMenuImageBarStyle
61{
62 background-color: #cccccc;
63 width: 24px;
64}
65
.PopupMenuTableStyle2
{3
border: groove 2px white;4
background-color: black;5
position: relative;6
left: 0px;7
top: 0px;8
}9
.PopupMenuRowStyle10
{11
vertical-align: middle;12
}13
.PopupMenuCellStyle14
{15
background-color: #ececec;16
text-align: left;17
width: 180px;18
height: 20px;19
}20
.PopupMenuCellHighlightedStyle21
{22
background-color: #ccccff;23
text-align: left;24
width: 180px;25
height: 20px;26
}27
.PopupMenuLinkStyle28
{29
font: normal normal bold small/normal Arial;30
text-decoration: none;31
white-space: nowrap;32
color: blue;33
cursor: hand;34
line-height: 18px;35
}36
.PopupMenuLinkHighlightedStyle37
{38
font: normal normal bolder small/normal Arial;39
text-decoration: none;40
white-space: nowrap;41
color: #ffffcc;42
color: blue;43
cursor: hand;44
line-height: 18px;45
}46
.MenuSeparatorCellStyle47
{48
background-color: #ececec;49
height: 1px;50
padding: 0px 0px 0px 0px;51
margin: 0px 0px 0px 0px;52
}53
.MenuSeparatorStyle54
{55
border-top: ridge 1px;56
width: 100%;57
color: white;58
height: 1px;59
}60
.PopupMenuImageBarStyle61
{62
background-color: #cccccc;63
width: 24px;64
}65
源码下载地址：
https://files.cnblogs.com/Terrylee/PopupMenuControlSample.rar