1 //------------------------------------------------------------------------------
2 // <copyright file="MenuRendererClassic.cs" company="Microsoft">
3 //     Copyright (c) Microsoft Corporation.  All rights reserved.
4 // </copyright>
5 //------------------------------------------------------------------------------
6 
7 namespace System.Web.UI.WebControls {
8     using System.Drawing;
9     using System.Globalization;
10     using System.Text;
11 
12     public partial class Menu {
13         /// <devdoc>The classic (pre-ASP.NET 4.0) Menu renderer</devdoc>
14         private class MenuRendererClassic : MenuRenderer {
15             private int _cssStyleIndex;
16 
MenuRendererClassic(Menu menu)17             public MenuRendererClassic(Menu menu) : base(menu) { }
18 
19             /// <devdoc>
20             ///     Make sure we are set up to render
21             /// </devdoc>
EnsureRenderSettings()22             internal void EnsureRenderSettings() {
23                 if (Menu.Page == null) {
24                     return;
25                 }
26 
27                 // If we don't have access to the header, we can't add the necessary styles
28                 if (Menu.Page.Header == null) {
29                     if (Menu._staticHoverStyle != null) {
30                         throw new InvalidOperationException(SR.GetString(SR.NeedHeader, "Menu.StaticHoverStyle"));
31                     }
32                     if (Menu._dynamicHoverStyle != null) {
33                         throw new InvalidOperationException(SR.GetString(SR.NeedHeader, "Menu.DynamicHoverStyle"));
34                     }
35                     return;
36                 }
37 
38                 Menu._isNotIE = (Menu.Page.Request.Browser.MSDomVersion.Major < 4);
39 
40                 if (Menu.Page.SupportsStyleSheets || (Menu.Page.ScriptManager != null && Menu.Page.ScriptManager.IsInAsyncPostBack)) {
41                     // Register the styles. NB the order here is important: later wins over earlier
42                     Menu._panelStyle = Menu.Panel.GetEmptyPopOutPanelStyle();
43                     RegisterStyle(Menu._panelStyle);
44 
45                     RegisterStyle(Menu.RootMenuItemStyle);
46 
47                     RegisterStyle(Menu.ControlStyle);
48 
49                     // It's also vitally important to register hyperlinkstyles BEFORE
50                     // their associated styles as we need to copy the data from this style
51                     // and a registered style appears empty except for RegisteredClassName
52                     if (Menu._staticItemStyle != null) {
53                         Menu._staticItemStyle.HyperLinkStyle.DoNotRenderDefaults = true;
54                         RegisterStyle(Menu._staticItemStyle.HyperLinkStyle);
55                         RegisterStyle(Menu._staticItemStyle);
56                     }
57                     if (Menu._staticMenuStyle != null) {
58                         RegisterStyle(Menu._staticMenuStyle);
59                     }
60 
61                     if (Menu._dynamicItemStyle != null) {
62                         Menu._dynamicItemStyle.HyperLinkStyle.DoNotRenderDefaults = true;
63                         RegisterStyle(Menu._dynamicItemStyle.HyperLinkStyle);
64                         RegisterStyle(Menu._dynamicItemStyle);
65                     }
66                     if (Menu._dynamicMenuStyle != null) {
67                         RegisterStyle(Menu._dynamicMenuStyle);
68                     }
69 
70                     foreach (MenuItemStyle style in Menu.LevelMenuItemStyles) {
71                         style.HyperLinkStyle.DoNotRenderDefaults = true;
72                         RegisterStyle(style.HyperLinkStyle);
73                         RegisterStyle(style);
74                     }
75                     foreach (SubMenuStyle style in Menu.LevelSubMenuStyles) {
76                         RegisterStyle(style);
77                     }
78 
79                     if (Menu._staticSelectedStyle != null) {
80                         Menu._staticSelectedStyle.HyperLinkStyle.DoNotRenderDefaults = true;
81                         RegisterStyle(Menu._staticSelectedStyle.HyperLinkStyle);
82                         RegisterStyle(Menu._staticSelectedStyle);
83                     }
84                     if (Menu._dynamicSelectedStyle != null) {
85                         Menu._dynamicSelectedStyle.HyperLinkStyle.DoNotRenderDefaults = true;
86                         RegisterStyle(Menu._dynamicSelectedStyle.HyperLinkStyle);
87                         RegisterStyle(Menu._dynamicSelectedStyle);
88                     }
89                     foreach (MenuItemStyle style in Menu.LevelSelectedStyles) {
90                         style.HyperLinkStyle.DoNotRenderDefaults = true;
91                         RegisterStyle(style.HyperLinkStyle);
92                         RegisterStyle(style);
93                     }
94 
95                     if (Menu._staticHoverStyle != null) {
96                         Menu._staticHoverHyperLinkStyle = new HyperLinkStyle(Menu._staticHoverStyle);
97                         Menu._staticHoverHyperLinkStyle.DoNotRenderDefaults = true;
98                         RegisterStyle(Menu._staticHoverHyperLinkStyle);
99                         RegisterStyle(Menu._staticHoverStyle);
100                     }
101                     if (Menu._dynamicHoverStyle != null) {
102                         Menu._dynamicHoverHyperLinkStyle = new HyperLinkStyle(Menu._dynamicHoverStyle);
103                         Menu._dynamicHoverHyperLinkStyle.DoNotRenderDefaults = true;
104                         RegisterStyle(Menu._dynamicHoverHyperLinkStyle);
105                         RegisterStyle(Menu._dynamicHoverStyle);
106                     }
107                 }
108             }
109 
PreRender(bool registerScript)110             public override void PreRender(bool registerScript) {
111                 EnsureRenderSettings();
112 
113                 if (Menu.Page != null && registerScript) {
114                     // The menu script requires the general webforms script
115                     Menu.Page.RegisterWebFormsScript();
116                     // Register the external Menu javascript file.
117                     Menu.Page.ClientScript.RegisterClientScriptResource(Menu, typeof(Menu), "Menu.js");
118 
119                     string clientDataObjectID = Menu.ClientDataObjectID;
120 
121                     //
122                     StringBuilder createDataObjectScript = new StringBuilder("var ");
123                     createDataObjectScript.Append(clientDataObjectID);
124                     createDataObjectScript.Append(" = new Object();\r\n");
125                     createDataObjectScript.Append(clientDataObjectID);
126                     createDataObjectScript.Append(".disappearAfter = ");
127                     createDataObjectScript.Append(Menu.DisappearAfter);
128                     createDataObjectScript.Append(";\r\n");
129                     createDataObjectScript.Append(clientDataObjectID);
130                     createDataObjectScript.Append(".horizontalOffset = ");
131                     createDataObjectScript.Append(Menu.DynamicHorizontalOffset);
132                     createDataObjectScript.Append(";\r\n");
133                     createDataObjectScript.Append(clientDataObjectID);
134                     createDataObjectScript.Append(".verticalOffset = ");
135                     createDataObjectScript.Append(Menu.DynamicVerticalOffset);
136                     createDataObjectScript.Append(";\r\n");
137                     if (Menu._dynamicHoverStyle != null) {
138                         createDataObjectScript.Append(clientDataObjectID);
139                         createDataObjectScript.Append(".hoverClass = '");
140                         createDataObjectScript.Append(Menu._dynamicHoverStyle.RegisteredCssClass);
141                         if (!String.IsNullOrEmpty(Menu._dynamicHoverStyle.CssClass)) {
142                             if (!String.IsNullOrEmpty(Menu._dynamicHoverStyle.RegisteredCssClass)) {
143                                 createDataObjectScript.Append(' ');
144                             }
145                             createDataObjectScript.Append(Menu._dynamicHoverStyle.CssClass);
146                         }
147                         createDataObjectScript.Append("';\r\n");
148                         if (Menu._dynamicHoverHyperLinkStyle != null) {
149                             createDataObjectScript.Append(clientDataObjectID);
150                             createDataObjectScript.Append(".hoverHyperLinkClass = '");
151                             createDataObjectScript.Append(Menu._dynamicHoverHyperLinkStyle.RegisteredCssClass);
152                             if (!String.IsNullOrEmpty(Menu._dynamicHoverStyle.CssClass)) {
153                                 if (!String.IsNullOrEmpty(Menu._dynamicHoverHyperLinkStyle.RegisteredCssClass)) {
154                                     createDataObjectScript.Append(' ');
155                                 }
156                                 createDataObjectScript.Append(Menu._dynamicHoverStyle.CssClass);
157                             }
158                             createDataObjectScript.Append("';\r\n");
159                         }
160                     }
161                     if (Menu._staticHoverStyle != null && Menu._staticHoverHyperLinkStyle != null) {
162                         createDataObjectScript.Append(clientDataObjectID);
163                         createDataObjectScript.Append(".staticHoverClass = '");
164                         createDataObjectScript.Append(Menu._staticHoverStyle.RegisteredCssClass);
165                         if (!String.IsNullOrEmpty(Menu._staticHoverStyle.CssClass)) {
166                             if (!String.IsNullOrEmpty(Menu._staticHoverStyle.RegisteredCssClass)) {
167                                 createDataObjectScript.Append(' ');
168                             }
169                             createDataObjectScript.Append(Menu._staticHoverStyle.CssClass);
170                         }
171                         createDataObjectScript.Append("';\r\n");
172                         if (Menu._staticHoverHyperLinkStyle != null) {
173                             createDataObjectScript.Append(clientDataObjectID);
174                             createDataObjectScript.Append(".staticHoverHyperLinkClass = '");
175                             createDataObjectScript.Append(Menu._staticHoverHyperLinkStyle.RegisteredCssClass);
176                             if (!String.IsNullOrEmpty(Menu._staticHoverStyle.CssClass)) {
177                                 if (!String.IsNullOrEmpty(Menu._staticHoverHyperLinkStyle.RegisteredCssClass)) {
178                                     createDataObjectScript.Append(' ');
179                                 }
180                                 createDataObjectScript.Append(Menu._staticHoverStyle.CssClass);
181                             }
182                             createDataObjectScript.Append("';\r\n");
183                         }
184                     }
185                     if ((Menu.Page.RequestInternal != null) &&
186                         (String.Equals(Menu.Page.Request.Url.Scheme, "https", StringComparison.OrdinalIgnoreCase))) {
187 
188                         createDataObjectScript.Append(clientDataObjectID);
189                         createDataObjectScript.Append(".iframeUrl = '");
190                         createDataObjectScript.Append(Util.QuoteJScriptString(
191                             Menu.Page.ClientScript.GetWebResourceUrl(typeof(Menu), "SmartNav.htm"),
192                             false));
193                         createDataObjectScript.Append("';\r\n");
194                     }
195 
196                     // Register a startup script that creates a tree data object
197                     Menu.Page.ClientScript.RegisterStartupScript(Menu, GetType(),
198                         Menu.ClientID + "_CreateDataObject",
199                         createDataObjectScript.ToString(),
200                         true);
201                 }
202             }
203 
RegisterStyle(Style style)204             private void RegisterStyle(Style style) {
205                 if (Menu.Page != null && Menu.Page.SupportsStyleSheets) {
206                     string name = Menu.ClientID + "_" + _cssStyleIndex++.ToString(NumberFormatInfo.InvariantInfo);
207                     Menu.Page.Header.StyleSheet.CreateStyleRule(style, Menu, "." + name);
208                     style.SetRegisteredCssClass(name);
209                 }
210             }
211 
RenderBeginTag(HtmlTextWriter writer, bool staticOnly)212             public override void RenderBeginTag(HtmlTextWriter writer, bool staticOnly) {
213                 ControlRenderingHelper.WriteSkipLinkStart(writer, Menu.RenderingCompatibility, Menu.DesignMode, Menu.SkipLinkText, Menu.SpacerImageUrl, Menu.ClientID);
214 
215                 // <table cellpadding="0" cellspacing="0" border="0" height="nodespacing">
216                 // Determine root menu style
217                 // First initialize the root menu style that depends on the control style before we change it. (VSWhidbey 354878)
218                 Menu.EnsureRootMenuStyle();
219                 if (Menu.Font != null) {
220                     // Relative sizes should not be multiplied (VSWhidbey 457610)
221                     Menu.Font.Reset();
222                 }
223                 Menu.ForeColor = Color.Empty;
224                 SubMenuStyle rootMenuStyle = Menu.GetSubMenuStyle(Menu.RootItem);
225                 if (Menu.Page != null && Menu.Page.SupportsStyleSheets) {
226                     string styleClass = Menu.GetSubMenuCssClassName(Menu.RootItem);
227                     if (styleClass.Length > 0) {
228                         if (Menu.CssClass.Length == 0) {
229                             Menu.CssClass = styleClass;
230                         }
231                         else {
232                             Menu.CssClass += ' ' + styleClass;
233                         }
234                     }
235                 }
236                 else {
237                     if (rootMenuStyle != null && !rootMenuStyle.IsEmpty) {
238                         // Remove FontInfo and ForeColor from the submenustyle where they are not relevant
239                         // but may get copied from by ControlStyle (VSWhidbey 438980)
240                         rootMenuStyle.Font.Reset();
241                         rootMenuStyle.ForeColor = Color.Empty;
242                         // It's ok to change the control style at this point because viewstate has already been saved
243                         Menu.ControlStyle.CopyFrom(rootMenuStyle);
244                     }
245                 }
246 
247                 Menu.AddAttributesToRender(writer);
248 
249                 writer.AddAttribute(HtmlTextWriterAttribute.Cellpadding, "0");
250                 writer.AddAttribute(HtmlTextWriterAttribute.Cellspacing, "0");
251                 writer.AddAttribute(HtmlTextWriterAttribute.Border, "0");
252                 writer.RenderBeginTag(HtmlTextWriterTag.Table);
253             }
254 
RenderContents(HtmlTextWriter writer, bool staticOnly)255             public override void RenderContents(HtmlTextWriter writer, bool staticOnly) {
256                 if (Menu.Orientation == Orientation.Horizontal) {
257                     // Render one global tr as items won't render any
258                     writer.RenderBeginTag(HtmlTextWriterTag.Tr);
259                 }
260                 bool enabled = Menu.IsEnabled;
261                 if (Menu.StaticDisplayLevels > 1) {
262                     if (Menu.Orientation == Orientation.Vertical) {
263                         // Render the items themselves
264                         for (int i = 0; i < Menu.Items.Count; i++) {
265                             Menu.Items[i].RenderItem(writer, i, enabled, Menu.Orientation, staticOnly);
266                             // And their static subitems
267                             if (Menu.Items[i].ChildItems.Count != 0) {
268                                 writer.RenderBeginTag(HtmlTextWriterTag.Tr);
269                                 writer.RenderBeginTag(HtmlTextWriterTag.Td);
270                                 Menu.Items[i].Render(writer, enabled, staticOnly);
271                                 writer.RenderEndTag(); // td
272                                 writer.RenderEndTag(); // tr
273                             }
274                         }
275                     }
276                     else {
277                         // Render the items themselves
278                         for (int i = 0; i < Menu.Items.Count; i++) {
279                             Menu.Items[i].RenderItem(writer, i, enabled, Menu.Orientation, staticOnly);
280                             // And their static subitems
281                             if (Menu.Items[i].ChildItems.Count != 0) {
282                                 writer.RenderBeginTag(HtmlTextWriterTag.Td);
283                                 Menu.Items[i].Render(writer, enabled, staticOnly);
284                                 writer.RenderEndTag(); // td
285                             }
286                         }
287                     }
288                 }
289                 else {
290                     // Render the items themselves
291                     for (int i = 0; i < Menu.Items.Count; i++) {
292                         Menu.Items[i].RenderItem(writer, i, enabled, Menu.Orientation, staticOnly);
293                     }
294                 }
295 
296                 if (Menu.Orientation == Orientation.Horizontal) {
297                     // Render global /tr
298                     writer.RenderEndTag();
299                 }
300 
301                 // Reset all these cached values so things can pick up changes in the designer
302                 if (Menu.DesignMode) {
303                     Menu.ResetCachedStyles();
304                 }
305             }
306 
RenderEndTag(HtmlTextWriter writer, bool staticOnly)307             public override void RenderEndTag(HtmlTextWriter writer, bool staticOnly) {
308                 writer.RenderEndTag(); // Table
309 
310                 // Render the submenus
311                 if (Menu.StaticDisplayLevels <= 1 && !staticOnly) {
312                     bool enabled = Menu.IsEnabled;
313                     for (int i = 0; i < Menu.Items.Count; i++) {
314                         Menu.Items[i].Render(writer, enabled, staticOnly);
315                     }
316                 }
317 
318                 ControlRenderingHelper.WriteSkipLinkEnd(writer, Menu.DesignMode, Menu.SkipLinkText, Menu.ClientID);
319             }
320         }
321     }
322 }
323