Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / UI / WebControls / MenuRendererClassic.cs / 1305376 / MenuRendererClassic.cs
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Web.UI.WebControls {
using System.Drawing;
using System.Globalization;
using System.Text;
public partial class Menu {
/// The classic (pre-ASP.NET 4.0) Menu renderer
private class MenuRendererClassic : MenuRenderer {
private int _cssStyleIndex;
public MenuRendererClassic(Menu menu) : base(menu) { }
///
/// Make sure we are set up to render
///
internal void EnsureRenderSettings() {
if (Menu.Page == null) {
return;
}
// If we don't have access to the header, we can't add the necessary styles
if (Menu.Page.Header == null) {
if (Menu._staticHoverStyle != null) {
throw new InvalidOperationException(SR.GetString(SR.NeedHeader, "Menu.StaticHoverStyle"));
}
if (Menu._dynamicHoverStyle != null) {
throw new InvalidOperationException(SR.GetString(SR.NeedHeader, "Menu.DynamicHoverStyle"));
}
return;
}
Menu._isNotIE = (Menu.Page.Request.Browser.MSDomVersion.Major < 4);
if (Menu.Page.SupportsStyleSheets || (Menu.Page.ScriptManager != null && Menu.Page.ScriptManager.IsInAsyncPostBack)) {
// Register the styles. NB the order here is important: later wins over earlier
Menu._panelStyle = Menu.Panel.GetEmptyPopOutPanelStyle();
RegisterStyle(Menu._panelStyle);
RegisterStyle(Menu.RootMenuItemStyle);
RegisterStyle(Menu.ControlStyle);
// It's also vitally important to register hyperlinkstyles BEFORE
// their associated styles as we need to copy the data from this style
// and a registered style appears empty except for RegisteredClassName
if (Menu._staticItemStyle != null) {
Menu._staticItemStyle.HyperLinkStyle.DoNotRenderDefaults = true;
RegisterStyle(Menu._staticItemStyle.HyperLinkStyle);
RegisterStyle(Menu._staticItemStyle);
}
if (Menu._staticMenuStyle != null) {
RegisterStyle(Menu._staticMenuStyle);
}
if (Menu._dynamicItemStyle != null) {
Menu._dynamicItemStyle.HyperLinkStyle.DoNotRenderDefaults = true;
RegisterStyle(Menu._dynamicItemStyle.HyperLinkStyle);
RegisterStyle(Menu._dynamicItemStyle);
}
if (Menu._dynamicMenuStyle != null) {
RegisterStyle(Menu._dynamicMenuStyle);
}
foreach (MenuItemStyle style in Menu.LevelMenuItemStyles) {
style.HyperLinkStyle.DoNotRenderDefaults = true;
RegisterStyle(style.HyperLinkStyle);
RegisterStyle(style);
}
foreach (SubMenuStyle style in Menu.LevelSubMenuStyles) {
RegisterStyle(style);
}
if (Menu._staticSelectedStyle != null) {
Menu._staticSelectedStyle.HyperLinkStyle.DoNotRenderDefaults = true;
RegisterStyle(Menu._staticSelectedStyle.HyperLinkStyle);
RegisterStyle(Menu._staticSelectedStyle);
}
if (Menu._dynamicSelectedStyle != null) {
Menu._dynamicSelectedStyle.HyperLinkStyle.DoNotRenderDefaults = true;
RegisterStyle(Menu._dynamicSelectedStyle.HyperLinkStyle);
RegisterStyle(Menu._dynamicSelectedStyle);
}
foreach (MenuItemStyle style in Menu.LevelSelectedStyles) {
style.HyperLinkStyle.DoNotRenderDefaults = true;
RegisterStyle(style.HyperLinkStyle);
RegisterStyle(style);
}
if (Menu._staticHoverStyle != null) {
Menu._staticHoverHyperLinkStyle = new HyperLinkStyle(Menu._staticHoverStyle);
Menu._staticHoverHyperLinkStyle.DoNotRenderDefaults = true;
RegisterStyle(Menu._staticHoverHyperLinkStyle);
RegisterStyle(Menu._staticHoverStyle);
}
if (Menu._dynamicHoverStyle != null) {
Menu._dynamicHoverHyperLinkStyle = new HyperLinkStyle(Menu._dynamicHoverStyle);
Menu._dynamicHoverHyperLinkStyle.DoNotRenderDefaults = true;
RegisterStyle(Menu._dynamicHoverHyperLinkStyle);
RegisterStyle(Menu._dynamicHoverStyle);
}
}
}
public override void PreRender(bool registerScript) {
EnsureRenderSettings();
if (Menu.Page != null && registerScript) {
// The menu script requires the general webforms script
Menu.Page.RegisterWebFormsScript();
// Register the external Menu javascript file.
Menu.Page.ClientScript.RegisterClientScriptResource(Menu, typeof(Menu), "Menu.js");
string clientDataObjectID = Menu.ClientDataObjectID;
//
StringBuilder createDataObjectScript = new StringBuilder("var ");
createDataObjectScript.Append(clientDataObjectID);
createDataObjectScript.Append(" = new Object();\r\n");
createDataObjectScript.Append(clientDataObjectID);
createDataObjectScript.Append(".disappearAfter = ");
createDataObjectScript.Append(Menu.DisappearAfter);
createDataObjectScript.Append(";\r\n");
createDataObjectScript.Append(clientDataObjectID);
createDataObjectScript.Append(".horizontalOffset = ");
createDataObjectScript.Append(Menu.DynamicHorizontalOffset);
createDataObjectScript.Append(";\r\n");
createDataObjectScript.Append(clientDataObjectID);
createDataObjectScript.Append(".verticalOffset = ");
createDataObjectScript.Append(Menu.DynamicVerticalOffset);
createDataObjectScript.Append(";\r\n");
if (Menu._dynamicHoverStyle != null) {
createDataObjectScript.Append(clientDataObjectID);
createDataObjectScript.Append(".hoverClass = '");
createDataObjectScript.Append(Menu._dynamicHoverStyle.RegisteredCssClass);
if (!String.IsNullOrEmpty(Menu._dynamicHoverStyle.CssClass)) {
if (!String.IsNullOrEmpty(Menu._dynamicHoverStyle.RegisteredCssClass)) {
createDataObjectScript.Append(' ');
}
createDataObjectScript.Append(Menu._dynamicHoverStyle.CssClass);
}
createDataObjectScript.Append("';\r\n");
if (Menu._dynamicHoverHyperLinkStyle != null) {
createDataObjectScript.Append(clientDataObjectID);
createDataObjectScript.Append(".hoverHyperLinkClass = '");
createDataObjectScript.Append(Menu._dynamicHoverHyperLinkStyle.RegisteredCssClass);
if (!String.IsNullOrEmpty(Menu._dynamicHoverStyle.CssClass)) {
if (!String.IsNullOrEmpty(Menu._dynamicHoverHyperLinkStyle.RegisteredCssClass)) {
createDataObjectScript.Append(' ');
}
createDataObjectScript.Append(Menu._dynamicHoverStyle.CssClass);
}
createDataObjectScript.Append("';\r\n");
}
}
if (Menu._staticHoverStyle != null && Menu._staticHoverHyperLinkStyle != null) {
createDataObjectScript.Append(clientDataObjectID);
createDataObjectScript.Append(".staticHoverClass = '");
createDataObjectScript.Append(Menu._staticHoverStyle.RegisteredCssClass);
if (!String.IsNullOrEmpty(Menu._staticHoverStyle.CssClass)) {
if (!String.IsNullOrEmpty(Menu._staticHoverStyle.RegisteredCssClass)) {
createDataObjectScript.Append(' ');
}
createDataObjectScript.Append(Menu._staticHoverStyle.CssClass);
}
createDataObjectScript.Append("';\r\n");
if (Menu._staticHoverHyperLinkStyle != null) {
createDataObjectScript.Append(clientDataObjectID);
createDataObjectScript.Append(".staticHoverHyperLinkClass = '");
createDataObjectScript.Append(Menu._staticHoverHyperLinkStyle.RegisteredCssClass);
if (!String.IsNullOrEmpty(Menu._staticHoverStyle.CssClass)) {
if (!String.IsNullOrEmpty(Menu._staticHoverHyperLinkStyle.RegisteredCssClass)) {
createDataObjectScript.Append(' ');
}
createDataObjectScript.Append(Menu._staticHoverStyle.CssClass);
}
createDataObjectScript.Append("';\r\n");
}
}
if ((Menu.Page.RequestInternal != null) &&
(String.Equals(Menu.Page.Request.Url.Scheme, "https", StringComparison.OrdinalIgnoreCase))) {
createDataObjectScript.Append(clientDataObjectID);
createDataObjectScript.Append(".iframeUrl = '");
createDataObjectScript.Append(Util.QuoteJScriptString(
Menu.Page.ClientScript.GetWebResourceUrl(typeof(Menu), "SmartNav.htm"),
false));
createDataObjectScript.Append("';\r\n");
}
// Register a startup script that creates a tree data object
Menu.Page.ClientScript.RegisterStartupScript(Menu, GetType(),
Menu.ClientID + "_CreateDataObject",
createDataObjectScript.ToString(),
true);
}
}
private void RegisterStyle(Style style) {
if (Menu.Page != null && Menu.Page.SupportsStyleSheets) {
string name = Menu.ClientID + "_" + _cssStyleIndex++.ToString(NumberFormatInfo.InvariantInfo);
Menu.Page.Header.StyleSheet.CreateStyleRule(style, Menu, "." + name);
style.SetRegisteredCssClass(name);
}
}
public override void RenderBeginTag(HtmlTextWriter writer, bool staticOnly) {
// skip link
if (Menu.SkipLinkText.Length != 0 && !Menu.DesignMode) {
writer.AddAttribute(HtmlTextWriterAttribute.Href, '#' + Menu.ClientID + "_SkipLink");
writer.RenderBeginTag(HtmlTextWriterTag.A);
writer.AddAttribute(HtmlTextWriterAttribute.Alt, Menu.SkipLinkText);
writer.AddAttribute(HtmlTextWriterAttribute.Src, Menu.SpacerImageUrl);
writer.AddStyleAttribute(HtmlTextWriterStyle.BorderWidth, "0px");
writer.AddAttribute(HtmlTextWriterAttribute.Width, "0");
writer.AddAttribute(HtmlTextWriterAttribute.Height, "0");
writer.RenderBeginTag(HtmlTextWriterTag.Img);
writer.RenderEndTag();
writer.RenderEndTag();
}
// 