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323 lines
17 KiB
C#
323 lines
17 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="MenuRendererClassic.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//------------------------------------------------------------------------------
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namespace System.Web.UI.WebControls {
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using System.Drawing;
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using System.Globalization;
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using System.Text;
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public partial class Menu {
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/// <devdoc>The classic (pre-ASP.NET 4.0) Menu renderer</devdoc>
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private class MenuRendererClassic : MenuRenderer {
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private int _cssStyleIndex;
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public MenuRendererClassic(Menu menu) : base(menu) { }
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/// <devdoc>
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/// Make sure we are set up to render
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/// </devdoc>
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internal void EnsureRenderSettings() {
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if (Menu.Page == null) {
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return;
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}
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// If we don't have access to the header, we can't add the necessary styles
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if (Menu.Page.Header == null) {
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if (Menu._staticHoverStyle != null) {
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throw new InvalidOperationException(SR.GetString(SR.NeedHeader, "Menu.StaticHoverStyle"));
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}
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if (Menu._dynamicHoverStyle != null) {
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throw new InvalidOperationException(SR.GetString(SR.NeedHeader, "Menu.DynamicHoverStyle"));
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}
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return;
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}
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Menu._isNotIE = (Menu.Page.Request.Browser.MSDomVersion.Major < 4);
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if (Menu.Page.SupportsStyleSheets || (Menu.Page.ScriptManager != null && Menu.Page.ScriptManager.IsInAsyncPostBack)) {
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// Register the styles. NB the order here is important: later wins over earlier
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Menu._panelStyle = Menu.Panel.GetEmptyPopOutPanelStyle();
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RegisterStyle(Menu._panelStyle);
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RegisterStyle(Menu.RootMenuItemStyle);
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RegisterStyle(Menu.ControlStyle);
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// It's also vitally important to register hyperlinkstyles BEFORE
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// their associated styles as we need to copy the data from this style
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// and a registered style appears empty except for RegisteredClassName
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if (Menu._staticItemStyle != null) {
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Menu._staticItemStyle.HyperLinkStyle.DoNotRenderDefaults = true;
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RegisterStyle(Menu._staticItemStyle.HyperLinkStyle);
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RegisterStyle(Menu._staticItemStyle);
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}
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if (Menu._staticMenuStyle != null) {
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RegisterStyle(Menu._staticMenuStyle);
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}
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if (Menu._dynamicItemStyle != null) {
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Menu._dynamicItemStyle.HyperLinkStyle.DoNotRenderDefaults = true;
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RegisterStyle(Menu._dynamicItemStyle.HyperLinkStyle);
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RegisterStyle(Menu._dynamicItemStyle);
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}
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if (Menu._dynamicMenuStyle != null) {
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RegisterStyle(Menu._dynamicMenuStyle);
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}
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foreach (MenuItemStyle style in Menu.LevelMenuItemStyles) {
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style.HyperLinkStyle.DoNotRenderDefaults = true;
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RegisterStyle(style.HyperLinkStyle);
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RegisterStyle(style);
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}
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foreach (SubMenuStyle style in Menu.LevelSubMenuStyles) {
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RegisterStyle(style);
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}
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if (Menu._staticSelectedStyle != null) {
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Menu._staticSelectedStyle.HyperLinkStyle.DoNotRenderDefaults = true;
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RegisterStyle(Menu._staticSelectedStyle.HyperLinkStyle);
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RegisterStyle(Menu._staticSelectedStyle);
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}
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if (Menu._dynamicSelectedStyle != null) {
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Menu._dynamicSelectedStyle.HyperLinkStyle.DoNotRenderDefaults = true;
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RegisterStyle(Menu._dynamicSelectedStyle.HyperLinkStyle);
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RegisterStyle(Menu._dynamicSelectedStyle);
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}
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foreach (MenuItemStyle style in Menu.LevelSelectedStyles) {
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style.HyperLinkStyle.DoNotRenderDefaults = true;
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RegisterStyle(style.HyperLinkStyle);
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RegisterStyle(style);
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}
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if (Menu._staticHoverStyle != null) {
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Menu._staticHoverHyperLinkStyle = new HyperLinkStyle(Menu._staticHoverStyle);
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Menu._staticHoverHyperLinkStyle.DoNotRenderDefaults = true;
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RegisterStyle(Menu._staticHoverHyperLinkStyle);
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RegisterStyle(Menu._staticHoverStyle);
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}
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if (Menu._dynamicHoverStyle != null) {
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Menu._dynamicHoverHyperLinkStyle = new HyperLinkStyle(Menu._dynamicHoverStyle);
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Menu._dynamicHoverHyperLinkStyle.DoNotRenderDefaults = true;
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RegisterStyle(Menu._dynamicHoverHyperLinkStyle);
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RegisterStyle(Menu._dynamicHoverStyle);
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}
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}
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}
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public override void PreRender(bool registerScript) {
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EnsureRenderSettings();
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if (Menu.Page != null && registerScript) {
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// The menu script requires the general webforms script
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Menu.Page.RegisterWebFormsScript();
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// Register the external Menu javascript file.
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Menu.Page.ClientScript.RegisterClientScriptResource(Menu, typeof(Menu), "Menu.js");
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string clientDataObjectID = Menu.ClientDataObjectID;
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//
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StringBuilder createDataObjectScript = new StringBuilder("var ");
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createDataObjectScript.Append(clientDataObjectID);
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createDataObjectScript.Append(" = new Object();\r\n");
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createDataObjectScript.Append(clientDataObjectID);
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createDataObjectScript.Append(".disappearAfter = ");
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createDataObjectScript.Append(Menu.DisappearAfter);
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createDataObjectScript.Append(";\r\n");
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createDataObjectScript.Append(clientDataObjectID);
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createDataObjectScript.Append(".horizontalOffset = ");
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createDataObjectScript.Append(Menu.DynamicHorizontalOffset);
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createDataObjectScript.Append(";\r\n");
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createDataObjectScript.Append(clientDataObjectID);
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createDataObjectScript.Append(".verticalOffset = ");
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createDataObjectScript.Append(Menu.DynamicVerticalOffset);
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createDataObjectScript.Append(";\r\n");
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if (Menu._dynamicHoverStyle != null) {
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createDataObjectScript.Append(clientDataObjectID);
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createDataObjectScript.Append(".hoverClass = '");
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createDataObjectScript.Append(Menu._dynamicHoverStyle.RegisteredCssClass);
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if (!String.IsNullOrEmpty(Menu._dynamicHoverStyle.CssClass)) {
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if (!String.IsNullOrEmpty(Menu._dynamicHoverStyle.RegisteredCssClass)) {
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createDataObjectScript.Append(' ');
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}
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createDataObjectScript.Append(Menu._dynamicHoverStyle.CssClass);
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}
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createDataObjectScript.Append("';\r\n");
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if (Menu._dynamicHoverHyperLinkStyle != null) {
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createDataObjectScript.Append(clientDataObjectID);
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createDataObjectScript.Append(".hoverHyperLinkClass = '");
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createDataObjectScript.Append(Menu._dynamicHoverHyperLinkStyle.RegisteredCssClass);
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if (!String.IsNullOrEmpty(Menu._dynamicHoverStyle.CssClass)) {
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if (!String.IsNullOrEmpty(Menu._dynamicHoverHyperLinkStyle.RegisteredCssClass)) {
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createDataObjectScript.Append(' ');
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}
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createDataObjectScript.Append(Menu._dynamicHoverStyle.CssClass);
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}
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createDataObjectScript.Append("';\r\n");
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}
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}
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if (Menu._staticHoverStyle != null && Menu._staticHoverHyperLinkStyle != null) {
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createDataObjectScript.Append(clientDataObjectID);
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createDataObjectScript.Append(".staticHoverClass = '");
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createDataObjectScript.Append(Menu._staticHoverStyle.RegisteredCssClass);
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if (!String.IsNullOrEmpty(Menu._staticHoverStyle.CssClass)) {
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if (!String.IsNullOrEmpty(Menu._staticHoverStyle.RegisteredCssClass)) {
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createDataObjectScript.Append(' ');
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}
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createDataObjectScript.Append(Menu._staticHoverStyle.CssClass);
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}
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createDataObjectScript.Append("';\r\n");
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if (Menu._staticHoverHyperLinkStyle != null) {
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createDataObjectScript.Append(clientDataObjectID);
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createDataObjectScript.Append(".staticHoverHyperLinkClass = '");
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createDataObjectScript.Append(Menu._staticHoverHyperLinkStyle.RegisteredCssClass);
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if (!String.IsNullOrEmpty(Menu._staticHoverStyle.CssClass)) {
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if (!String.IsNullOrEmpty(Menu._staticHoverHyperLinkStyle.RegisteredCssClass)) {
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createDataObjectScript.Append(' ');
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}
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createDataObjectScript.Append(Menu._staticHoverStyle.CssClass);
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}
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createDataObjectScript.Append("';\r\n");
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}
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}
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if ((Menu.Page.RequestInternal != null) &&
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(String.Equals(Menu.Page.Request.Url.Scheme, "https", StringComparison.OrdinalIgnoreCase))) {
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createDataObjectScript.Append(clientDataObjectID);
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createDataObjectScript.Append(".iframeUrl = '");
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createDataObjectScript.Append(Util.QuoteJScriptString(
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Menu.Page.ClientScript.GetWebResourceUrl(typeof(Menu), "SmartNav.htm"),
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false));
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createDataObjectScript.Append("';\r\n");
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}
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// Register a startup script that creates a tree data object
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Menu.Page.ClientScript.RegisterStartupScript(Menu, GetType(),
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Menu.ClientID + "_CreateDataObject",
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createDataObjectScript.ToString(),
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true);
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}
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}
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private void RegisterStyle(Style style) {
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if (Menu.Page != null && Menu.Page.SupportsStyleSheets) {
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string name = Menu.ClientID + "_" + _cssStyleIndex++.ToString(NumberFormatInfo.InvariantInfo);
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Menu.Page.Header.StyleSheet.CreateStyleRule(style, Menu, "." + name);
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style.SetRegisteredCssClass(name);
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}
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}
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public override void RenderBeginTag(HtmlTextWriter writer, bool staticOnly) {
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ControlRenderingHelper.WriteSkipLinkStart(writer, Menu.RenderingCompatibility, Menu.DesignMode, Menu.SkipLinkText, Menu.SpacerImageUrl, Menu.ClientID);
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// <table cellpadding="0" cellspacing="0" border="0" height="nodespacing">
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// Determine root menu style
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// First initialize the root menu style that depends on the control style before we change it. (VSWhidbey 354878)
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Menu.EnsureRootMenuStyle();
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if (Menu.Font != null) {
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// Relative sizes should not be multiplied (VSWhidbey 457610)
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Menu.Font.Reset();
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}
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Menu.ForeColor = Color.Empty;
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SubMenuStyle rootMenuStyle = Menu.GetSubMenuStyle(Menu.RootItem);
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if (Menu.Page != null && Menu.Page.SupportsStyleSheets) {
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string styleClass = Menu.GetSubMenuCssClassName(Menu.RootItem);
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if (styleClass.Length > 0) {
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if (Menu.CssClass.Length == 0) {
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Menu.CssClass = styleClass;
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}
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else {
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Menu.CssClass += ' ' + styleClass;
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}
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}
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}
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else {
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if (rootMenuStyle != null && !rootMenuStyle.IsEmpty) {
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// Remove FontInfo and ForeColor from the submenustyle where they are not relevant
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// but may get copied from by ControlStyle (VSWhidbey 438980)
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rootMenuStyle.Font.Reset();
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rootMenuStyle.ForeColor = Color.Empty;
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// It's ok to change the control style at this point because viewstate has already been saved
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Menu.ControlStyle.CopyFrom(rootMenuStyle);
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}
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}
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Menu.AddAttributesToRender(writer);
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writer.AddAttribute(HtmlTextWriterAttribute.Cellpadding, "0");
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writer.AddAttribute(HtmlTextWriterAttribute.Cellspacing, "0");
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writer.AddAttribute(HtmlTextWriterAttribute.Border, "0");
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writer.RenderBeginTag(HtmlTextWriterTag.Table);
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}
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public override void RenderContents(HtmlTextWriter writer, bool staticOnly) {
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if (Menu.Orientation == Orientation.Horizontal) {
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// Render one global tr as items won't render any
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writer.RenderBeginTag(HtmlTextWriterTag.Tr);
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}
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bool enabled = Menu.IsEnabled;
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if (Menu.StaticDisplayLevels > 1) {
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if (Menu.Orientation == Orientation.Vertical) {
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// Render the items themselves
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for (int i = 0; i < Menu.Items.Count; i++) {
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Menu.Items[i].RenderItem(writer, i, enabled, Menu.Orientation, staticOnly);
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// And their static subitems
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if (Menu.Items[i].ChildItems.Count != 0) {
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writer.RenderBeginTag(HtmlTextWriterTag.Tr);
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writer.RenderBeginTag(HtmlTextWriterTag.Td);
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Menu.Items[i].Render(writer, enabled, staticOnly);
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writer.RenderEndTag(); // td
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writer.RenderEndTag(); // tr
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}
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}
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}
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else {
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// Render the items themselves
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for (int i = 0; i < Menu.Items.Count; i++) {
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Menu.Items[i].RenderItem(writer, i, enabled, Menu.Orientation, staticOnly);
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// And their static subitems
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if (Menu.Items[i].ChildItems.Count != 0) {
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writer.RenderBeginTag(HtmlTextWriterTag.Td);
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Menu.Items[i].Render(writer, enabled, staticOnly);
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writer.RenderEndTag(); // td
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}
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}
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}
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}
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else {
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// Render the items themselves
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for (int i = 0; i < Menu.Items.Count; i++) {
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Menu.Items[i].RenderItem(writer, i, enabled, Menu.Orientation, staticOnly);
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}
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}
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if (Menu.Orientation == Orientation.Horizontal) {
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// Render global /tr
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writer.RenderEndTag();
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}
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// Reset all these cached values so things can pick up changes in the designer
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if (Menu.DesignMode) {
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Menu.ResetCachedStyles();
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}
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}
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public override void RenderEndTag(HtmlTextWriter writer, bool staticOnly) {
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writer.RenderEndTag(); // Table
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// Render the submenus
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if (Menu.StaticDisplayLevels <= 1 && !staticOnly) {
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bool enabled = Menu.IsEnabled;
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for (int i = 0; i < Menu.Items.Count; i++) {
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Menu.Items[i].Render(writer, enabled, staticOnly);
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}
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}
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ControlRenderingHelper.WriteSkipLinkEnd(writer, Menu.DesignMode, Menu.SkipLinkText, Menu.ClientID);
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}
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}
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}
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}
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