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390 lines
18 KiB
C#
390 lines
18 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="WebPartMenu.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.WebParts {
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using System;
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using System.Collections;
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using System.ComponentModel;
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using System.Drawing;
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using System.Globalization;
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using System.Web;
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using System.Web.Handlers;
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using System.Web.UI;
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using System.Web.UI.WebControls;
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using System.Web.Util;
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internal sealed class WebPartMenu {
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private static string _defaultCheckImageUrl;
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private int _cssStyleIndex;
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private IWebPartMenuUser _menuUser;
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public WebPartMenu(IWebPartMenuUser menuUser) {
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_menuUser = menuUser;
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}
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private static string DefaultCheckImageUrl {
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get {
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if (_defaultCheckImageUrl == null) {
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_defaultCheckImageUrl = AssemblyResourceLoader.GetWebResourceUrl(typeof(WebPartMenu), "WebPartMenu_Check.gif");
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}
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return _defaultCheckImageUrl;
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}
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}
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private void RegisterStartupScript(string clientID) {
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string menuItemStyleCss = String.Empty;
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string menuItemHoverStyleCss = String.Empty;
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Style itemStyle = _menuUser.ItemStyle;
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if (itemStyle != null) {
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menuItemStyleCss = itemStyle.GetStyleAttributes(_menuUser.UrlResolver).Value;
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}
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Style itemHoverStyle = _menuUser.ItemHoverStyle;
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if (itemHoverStyle != null) {
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menuItemHoverStyleCss = itemHoverStyle.GetStyleAttributes(_menuUser.UrlResolver).Value;
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}
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string labelHoverColor = String.Empty;
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string labelHoverClass = String.Empty;
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Style labelHoverStyle = _menuUser.LabelHoverStyle;
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if (labelHoverStyle != null) {
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Color foreColor = labelHoverStyle.ForeColor;
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if (foreColor.IsEmpty == false) {
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labelHoverColor = ColorTranslator.ToHtml(foreColor);
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}
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labelHoverClass = labelHoverStyle.RegisteredCssClass;
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}
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// Using concatenation instead of String.Format for perf
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// (here, the compiler will build an object[] and call String.Concat only once).
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string script = @"
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<script type=""text/javascript"">
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var menu" + clientID + " = new WebPartMenu(document.getElementById('" + clientID + "'), document.getElementById('" + clientID + "Popup'), document.getElementById('" + clientID + @"Menu'));
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menu" + clientID + ".itemStyle = '" + Util.QuoteJScriptString(menuItemStyleCss) + @"';
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menu" + clientID + ".itemHoverStyle = '" + Util.QuoteJScriptString(menuItemHoverStyleCss) + @"';
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menu" + clientID + ".labelHoverColor = '" + labelHoverColor + @"';
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menu" + clientID + ".labelHoverClassName = '" + labelHoverClass + @"';
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</script>
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";
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if (_menuUser.Page != null) {
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_menuUser.Page.ClientScript.RegisterStartupScript((Control)_menuUser, typeof(WebPartMenu), clientID, script, false);
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IScriptManager scriptManager = _menuUser.Page.ScriptManager;
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if ((scriptManager != null) && scriptManager.SupportsPartialRendering) {
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scriptManager.RegisterDispose((Control)_menuUser,
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"document.getElementById('" + clientID + "').__menu.Dispose();");
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}
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}
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}
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private void RegisterStyle(Style style) {
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Debug.Assert(_menuUser.Page != null && _menuUser.Page.SupportsStyleSheets);
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if (style != null && !style.IsEmpty) {
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// The style should not have already been registered
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Debug.Assert(style.RegisteredCssClass.Length == 0);
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string name = _menuUser.ClientID + "__Menu_" + _cssStyleIndex++.ToString(NumberFormatInfo.InvariantInfo);
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_menuUser.Page.Header.StyleSheet.CreateStyleRule(style, _menuUser.UrlResolver, "." + name);
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style.SetRegisteredCssClass(name);
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}
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}
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public void RegisterStyles() {
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// Assert is fine here as the class is internal
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Debug.Assert(_menuUser.Page != null && _menuUser.Page.SupportsStyleSheets);
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// Registering the static label style before hover so hover takes precedence
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RegisterStyle(_menuUser.LabelStyle);
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RegisterStyle(_menuUser.LabelHoverStyle);
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}
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public void Render(HtmlTextWriter writer, string clientID) {
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RenderLabel(writer, clientID, null);
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}
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public void Render(HtmlTextWriter writer, ICollection verbs, string clientID, WebPart associatedWebPart,
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WebPartManager webPartManager) {
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// This method should only be called when Zone.RenderClientScript is true, which means
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// WebPartManager is not null.
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Debug.Assert(webPartManager != null);
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RegisterStartupScript(clientID);
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RenderLabel(writer, clientID, associatedWebPart);
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RenderMenuPopup(writer, verbs, clientID, associatedWebPart, webPartManager);
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}
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private void RenderLabel(HtmlTextWriter writer, string clientID, WebPart associatedWebPart) {
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_menuUser.OnBeginRender(writer);
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if (associatedWebPart != null) {
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writer.AddAttribute(HtmlTextWriterAttribute.Id, clientID);
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Style labelStyle = _menuUser.LabelStyle;
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if (labelStyle != null) {
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labelStyle.AddAttributesToRender(writer, _menuUser as WebControl);
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}
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}
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writer.AddStyleAttribute(HtmlTextWriterStyle.Cursor, "hand");
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writer.AddStyleAttribute(HtmlTextWriterStyle.Display, "inline-block");
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writer.AddStyleAttribute(HtmlTextWriterStyle.Padding, "1px");
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writer.AddStyleAttribute(HtmlTextWriterStyle.TextDecoration, "none");
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writer.RenderBeginTag(HtmlTextWriterTag.Span);
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string labelImageUrl = _menuUser.LabelImageUrl;
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string text = _menuUser.LabelText;
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if (!String.IsNullOrEmpty(labelImageUrl)) {
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writer.AddAttribute(HtmlTextWriterAttribute.Src, labelImageUrl);
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writer.AddAttribute(HtmlTextWriterAttribute.Alt,
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(!String.IsNullOrEmpty(text) ?
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text :
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SR.GetString(SR.WebPartMenu_DefaultDropDownAlternateText)),
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true);
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writer.AddStyleAttribute("vertical-align", "middle");
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writer.AddStyleAttribute(HtmlTextWriterStyle.BorderStyle, "none");
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writer.RenderBeginTag(HtmlTextWriterTag.Img);
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writer.RenderEndTag();
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writer.Write(" ");
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}
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if (!String.IsNullOrEmpty(text)) {
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writer.Write(text);
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writer.Write(" ");
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}
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writer.AddAttribute(HtmlTextWriterAttribute.Id, clientID + "Popup");
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string popupImageUrl = _menuUser.PopupImageUrl;
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if (!String.IsNullOrEmpty(popupImageUrl)) {
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writer.AddAttribute(HtmlTextWriterAttribute.Src, popupImageUrl);
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writer.AddAttribute(HtmlTextWriterAttribute.Alt,
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(!String.IsNullOrEmpty(text) ?
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text :
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SR.GetString(SR.WebPartMenu_DefaultDropDownAlternateText)),
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true);
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writer.AddStyleAttribute("vertical-align", "middle");
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writer.AddStyleAttribute(HtmlTextWriterStyle.BorderStyle, "none");
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writer.RenderBeginTag(HtmlTextWriterTag.Img);
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writer.RenderEndTag();
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}
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else {
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// Render down arrow using windows font
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writer.AddStyleAttribute(HtmlTextWriterStyle.FontFamily, "Marlett");
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writer.AddStyleAttribute(HtmlTextWriterStyle.FontSize, "8pt");
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writer.RenderBeginTag(HtmlTextWriterTag.Span);
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writer.Write("u");
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writer.RenderEndTag();
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}
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writer.RenderEndTag(); // Span
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_menuUser.OnEndRender(writer);
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}
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private void RenderMenuPopup(HtmlTextWriter writer, ICollection verbs, string clientID, WebPart associatedWebPart,
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WebPartManager webPartManager) {
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writer.AddAttribute(HtmlTextWriterAttribute.Id, clientID + "Menu");
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writer.AddStyleAttribute(HtmlTextWriterStyle.Display, "none");
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writer.RenderBeginTag(HtmlTextWriterTag.Div);
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bool popupSpansFullExtent = true;
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WebPartMenuStyle menuStyle = _menuUser.MenuPopupStyle;
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if (menuStyle != null) {
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menuStyle.AddAttributesToRender(writer, _menuUser as WebControl);
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popupSpansFullExtent = menuStyle.Width.IsEmpty;
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}
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else {
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// generate attributes corresponding to defaults on WebPartMenuStyle
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writer.AddAttribute(HtmlTextWriterAttribute.Cellspacing, "0");
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writer.AddAttribute(HtmlTextWriterAttribute.Cellpadding, "1");
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writer.AddStyleAttribute(HtmlTextWriterStyle.BorderCollapse, "collapse");
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}
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if (popupSpansFullExtent) {
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writer.AddStyleAttribute(HtmlTextWriterStyle.Width, "100%");
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}
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writer.RenderBeginTag(HtmlTextWriterTag.Table);
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writer.RenderBeginTag(HtmlTextWriterTag.Tr);
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writer.AddStyleAttribute(HtmlTextWriterStyle.WhiteSpace, "nowrap");
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writer.RenderBeginTag(HtmlTextWriterTag.Td);
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bool isParentEnabled = associatedWebPart.Zone.IsEnabled;
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foreach (WebPartVerb verb in verbs) {
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Debug.Assert(verb != null);
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writer.RenderBeginTag(HtmlTextWriterTag.Div);
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string alt;
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if (associatedWebPart != null) {
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alt = String.Format(CultureInfo.CurrentCulture, verb.Description, associatedWebPart.DisplayTitle);
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}
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else {
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alt = verb.Description;
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}
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if (alt.Length != 0) {
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writer.AddAttribute(HtmlTextWriterAttribute.Title, alt);
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}
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bool isEnabled = isParentEnabled && verb.Enabled;
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// Special case help, export, etc.
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if (verb is WebPartHelpVerb) {
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Debug.Assert(associatedWebPart != null);
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string resolvedHelpUrl =
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((IUrlResolutionService)associatedWebPart).ResolveClientUrl(associatedWebPart.HelpUrl);
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writer.AddAttribute(HtmlTextWriterAttribute.Href, "javascript:void(0)");
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if (isEnabled) {
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writer.AddAttribute(HtmlTextWriterAttribute.Onclick,
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"document.body.__wpm.ShowHelp('" +
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Util.QuoteJScriptString(resolvedHelpUrl) +
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"', " +
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((int)associatedWebPart.HelpMode).ToString(CultureInfo.InvariantCulture) + ")");
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}
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}
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else if (verb is WebPartExportVerb) {
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Debug.Assert(associatedWebPart != null);
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string exportUrl = webPartManager.GetExportUrl(associatedWebPart);
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writer.AddAttribute(HtmlTextWriterAttribute.Href, "javascript:void(0)");
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if (isEnabled) {
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writer.AddAttribute(HtmlTextWriterAttribute.Onclick,
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"document.body.__wpm.ExportWebPart('" +
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Util.QuoteJScriptString(exportUrl) +
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((associatedWebPart.ExportMode == WebPartExportMode.All) ?
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"', true, false)" :
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"', false, false)"));
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}
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}
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else {
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string target = _menuUser.PostBackTarget;
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writer.AddAttribute(HtmlTextWriterAttribute.Href, "javascript:void(0)");
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if (isEnabled) {
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string eventArgument = verb.EventArgument;
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if (associatedWebPart != null) {
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eventArgument = verb.GetEventArgument(associatedWebPart.ID);
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}
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string submitScript = null;
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if (!String.IsNullOrEmpty(eventArgument)) {
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submitScript = "document.body.__wpm.SubmitPage('" +
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Util.QuoteJScriptString(target) +
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"', '" +
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Util.QuoteJScriptString(eventArgument) +
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"');";
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_menuUser.Page.ClientScript.RegisterForEventValidation(target, eventArgument);
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}
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string clientClickScript = null;
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if (!String.IsNullOrEmpty(verb.ClientClickHandler)) {
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clientClickScript = "document.body.__wpm.Execute('" +
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Util.QuoteJScriptString(Util.EnsureEndWithSemiColon(verb.ClientClickHandler)) +
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"')";
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}
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// There must be either an EventArgument or a ClientClickHandler
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Debug.Assert(submitScript != null || clientClickScript != null);
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string onclick = String.Empty;
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if (submitScript != null && clientClickScript != null) {
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onclick = "if(" + clientClickScript + "){" + submitScript + "}";
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}
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else if (submitScript != null) {
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onclick = submitScript;
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}
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else if (clientClickScript != null) {
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onclick = clientClickScript;
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}
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if (verb is WebPartCloseVerb) {
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Debug.Assert(associatedWebPart != null);
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// PERF: First check if this WebPart even has provider connection points
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ProviderConnectionPointCollection connectionPoints =
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webPartManager.GetProviderConnectionPoints(associatedWebPart);
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if (connectionPoints != null && connectionPoints.Count > 0 &&
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webPartManager.Connections.ContainsProvider(associatedWebPart)) {
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onclick = "if(document.body.__wpmCloseProviderWarning.length == 0 || " +
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"confirm(document.body.__wpmCloseProviderWarning)){" + onclick + "}";
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}
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}
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else if (verb is WebPartDeleteVerb) {
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onclick = "if(document.body.__wpmDeleteWarning.length == 0 || " +
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"confirm(document.body.__wpmDeleteWarning)){" + onclick + "}";
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}
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writer.AddAttribute(HtmlTextWriterAttribute.Onclick, onclick);
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}
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}
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string disabledClass = "menuItem";
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if (!verb.Enabled) {
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if (associatedWebPart.Zone.RenderingCompatibility < VersionUtil.Framework40) {
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writer.AddAttribute(HtmlTextWriterAttribute.Disabled, "disabled");
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}
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else if (!String.IsNullOrEmpty(WebControl.DisabledCssClass)) {
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disabledClass = WebControl.DisabledCssClass + " " + disabledClass;
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}
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}
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writer.AddAttribute(HtmlTextWriterAttribute.Class, disabledClass);
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writer.RenderBeginTag(HtmlTextWriterTag.A);
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string img = verb.ImageUrl;
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if (img.Length != 0) {
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img = _menuUser.UrlResolver.ResolveClientUrl(img);
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}
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else {
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if (verb.Checked) {
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img = _menuUser.CheckImageUrl;
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if (img.Length == 0) {
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img = DefaultCheckImageUrl;
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}
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}
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else {
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img = webPartManager.SpacerImageUrl;
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}
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}
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writer.AddAttribute(HtmlTextWriterAttribute.Src, img);
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writer.AddAttribute(HtmlTextWriterAttribute.Alt, alt, true);
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writer.AddAttribute(HtmlTextWriterAttribute.Width, "16");
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writer.AddAttribute(HtmlTextWriterAttribute.Height, "16");
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writer.AddStyleAttribute(HtmlTextWriterStyle.BorderStyle, "none");
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writer.AddStyleAttribute("vertical-align", "middle");
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if (verb.Checked) {
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Style checkImageStyle = _menuUser.CheckImageStyle;
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if (checkImageStyle != null) {
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checkImageStyle.AddAttributesToRender(writer, _menuUser as WebControl);
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}
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}
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writer.RenderBeginTag(HtmlTextWriterTag.Img);
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writer.RenderEndTag(); // Img
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writer.Write(" ");
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writer.Write(verb.Text);
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writer.Write(" ");
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writer.RenderEndTag(); // A
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writer.RenderEndTag(); // Div
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}
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writer.RenderEndTag(); // Td
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writer.RenderEndTag(); // Tr
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writer.RenderEndTag(); // Table
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writer.RenderEndTag(); // Div
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}
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}
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}
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