327 lines
10 KiB
C#
327 lines
10 KiB
C#
//
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// System.Web.UI.WebControls.BulletedList.cs
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//
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// Authors:
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// Ben Maurer (bmaurer@users.sourceforge.net)
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//
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// (C) 2003 Ben Maurer
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//
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System.IO;
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using System.Collections;
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using System.Globalization;
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using System.Text;
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using System.Drawing;
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using System.ComponentModel;
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using System.ComponentModel.Design;
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using System.Security.Permissions;
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using System.Web.Util;
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namespace System.Web.UI.WebControls
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{
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// CAS
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[AspNetHostingPermissionAttribute (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
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[AspNetHostingPermissionAttribute (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
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// attributes
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[DesignerAttribute ("System.Web.UI.Design.WebControls.BulletedListDesigner, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.IDesigner")]
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[DefaultEventAttribute ("Click")]
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[DefaultPropertyAttribute ("BulletStyle")]
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[SupportsEventValidation]
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public class BulletedList : ListControl, IPostBackEventHandler
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{
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static readonly object ClickEvent = new object ();
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PostBackOptions postBackOptions;
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public event BulletedListEventHandler Click {
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add { Events.AddHandler (ClickEvent, value); }
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remove { Events.RemoveHandler (ClickEvent, value); }
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}
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[MonoTODO ("we are missing a new style enum, we should be using it")]
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protected override void AddAttributesToRender (HtmlTextWriter writer)
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{
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const string ListStyleType = "list-style-type";
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const string ListStyleImage = "list-style-image";
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bool isNumeric = false;
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switch (BulletStyle) {
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case BulletStyle.NotSet:
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break;
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case BulletStyle.Numbered:
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writer.AddStyleAttribute (ListStyleType, "decimal");
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isNumeric = true;
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break;
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case BulletStyle.LowerAlpha:
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writer.AddStyleAttribute (ListStyleType, "lower-alpha");
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isNumeric = true;
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break;
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case BulletStyle.UpperAlpha:
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writer.AddStyleAttribute (ListStyleType, "upper-alpha");
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isNumeric = true;
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break;
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case BulletStyle.LowerRoman:
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writer.AddStyleAttribute (ListStyleType, "lower-roman");
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isNumeric = true;
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break;
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case BulletStyle.UpperRoman:
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writer.AddStyleAttribute (ListStyleType, "upper-roman");
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isNumeric = true;
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break;
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case BulletStyle.Disc:
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writer.AddStyleAttribute (ListStyleType, "disc");
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break;
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case BulletStyle.Circle:
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writer.AddStyleAttribute (ListStyleType, "circle");
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break;
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case BulletStyle.Square:
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writer.AddStyleAttribute (ListStyleType, "square");
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break;
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case BulletStyle.CustomImage:
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writer.AddStyleAttribute (ListStyleImage, "url(" + ResolveClientUrl (BulletImageUrl) + ")");
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break;
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}
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if (isNumeric && FirstBulletNumber != 1)
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writer.AddAttribute ("start", FirstBulletNumber.ToString ());
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base.AddAttributesToRender (writer);
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}
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protected virtual void RenderBulletText (ListItem item, int index, HtmlTextWriter writer)
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{
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string text = HttpUtility.HtmlEncode (item.Text);
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switch (DisplayMode) {
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case BulletedListDisplayMode.Text:
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if (!item.Enabled) {
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writer.AddAttribute (HtmlTextWriterAttribute.Disabled, "disabled", false);
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writer.RenderBeginTag (HtmlTextWriterTag.Span);
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}
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writer.Write (text);
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if (!item.Enabled)
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writer.RenderEndTag ();
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break;
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case BulletedListDisplayMode.HyperLink:
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if (IsEnabled && item.Enabled) {
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writer.AddAttribute (HtmlTextWriterAttribute.Href, item.Value);
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if (Target.Length > 0)
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writer.AddAttribute(HtmlTextWriterAttribute.Target, this.Target);
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} else
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writer.AddAttribute (HtmlTextWriterAttribute.Disabled, "disabled", false);
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writer.RenderBeginTag (HtmlTextWriterTag.A);
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writer.Write (text);
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writer.RenderEndTag ();
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break;
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case BulletedListDisplayMode.LinkButton:
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if (IsEnabled && item.Enabled)
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writer.AddAttribute (HtmlTextWriterAttribute.Href, Page.ClientScript.GetPostBackEventReference (GetPostBackOptions (index.ToString (Helpers.InvariantCulture)), true));
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else
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writer.AddAttribute (HtmlTextWriterAttribute.Disabled, "disabled", false);
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writer.RenderBeginTag (HtmlTextWriterTag.A);
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writer.Write (text);
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writer.RenderEndTag ();
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break;
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}
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}
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PostBackOptions GetPostBackOptions (string argument)
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{
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if (postBackOptions == null) {
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postBackOptions = new PostBackOptions (this);
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postBackOptions.ActionUrl = null;
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postBackOptions.ValidationGroup = null;
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postBackOptions.RequiresJavaScriptProtocol = true;
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postBackOptions.ClientSubmit = true;
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postBackOptions.PerformValidation = CausesValidation && Page != null && Page.AreValidatorsUplevel (ValidationGroup);
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if (postBackOptions.PerformValidation)
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postBackOptions.ValidationGroup = ValidationGroup;
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}
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postBackOptions.Argument = argument;
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return postBackOptions;
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}
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protected internal override void RenderContents (HtmlTextWriter writer)
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{
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int idx = 0;
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Page page = Page;
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ClientScriptManager scriptManager = page != null ? page.ClientScript : null;
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foreach (ListItem i in Items) {
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if (page != null)
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scriptManager.RegisterForEventValidation (UniqueID, i.Value);
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if (i.HasAttributes)
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i.Attributes.AddAttributes (writer);
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writer.RenderBeginTag (HtmlTextWriterTag.Li);
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this.RenderBulletText (i, idx ++, writer);
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writer.RenderEndTag ();
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}
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}
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protected internal override void Render (HtmlTextWriter writer)
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{
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base.Render (writer);
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}
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void IPostBackEventHandler.RaisePostBackEvent (string eventArgument)
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{
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RaisePostBackEvent (eventArgument);
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}
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protected virtual void RaisePostBackEvent (string eventArgument)
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{
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ValidateEvent (UniqueID, eventArgument);
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if (CausesValidation)
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Page.Validate (ValidationGroup);
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this.OnClick (new BulletedListEventArgs (int.Parse (eventArgument, Helpers.InvariantCulture)));
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}
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[BrowsableAttribute (false)]
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[EditorBrowsableAttribute (EditorBrowsableState.Never)]
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public override bool AutoPostBack {
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get { return base.AutoPostBack; }
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set { throw new NotSupportedException (String.Format ("This property is not supported in {0}", GetType ())); }
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}
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[Bindable (false)]
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[EditorBrowsableAttribute (EditorBrowsableState.Never)]
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public override int SelectedIndex {
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get { return -1; }
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set { throw new NotSupportedException (String.Format ("This property is not supported in {0}", GetType ())); }
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}
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[EditorBrowsableAttribute (EditorBrowsableState.Never)]
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public override ListItem SelectedItem {
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get { return null; }
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}
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[EditorBrowsable (EditorBrowsableState.Never)]
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[Bindable (false)]
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public override string SelectedValue {
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get { return string.Empty; }
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set { throw new NotSupportedException (); }
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}
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[DefaultValueAttribute ("")]
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[EditorAttribute ("System.Web.UI.Design.ImageUrlEditor, " + Consts.AssemblySystem_Design, "System.Drawing.Design.UITypeEditor, " + Consts.AssemblySystem_Drawing)]
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[UrlPropertyAttribute]
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public virtual string BulletImageUrl {
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get { return ViewState.GetString ("BulletImageUrl", String.Empty); }
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set { ViewState ["BulletImageUrl"] = value; }
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}
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[DefaultValueAttribute (BulletStyle.NotSet)]
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public virtual BulletStyle BulletStyle {
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get { return (BulletStyle) ViewState.GetInt ("BulletStyle", (int) BulletStyle.NotSet); }
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set {
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if ((int) value < 0 || (int) value > 9)
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throw new ArgumentOutOfRangeException ("value");
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ViewState ["BulletStyle"] = value;
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}
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}
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public override ControlCollection Controls { get { return new EmptyControlCollection (this); } }
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[DefaultValueAttribute (BulletedListDisplayMode.Text)]
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public virtual BulletedListDisplayMode DisplayMode {
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get { return (BulletedListDisplayMode) ViewState.GetInt ("DisplayMode", (int)BulletedListDisplayMode.Text); }
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set {
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if ((int) value < 0 || (int) value > 2)
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throw new ArgumentOutOfRangeException ("value");
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ViewState ["DisplayMode"] = value;
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}
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}
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[DefaultValueAttribute (1)]
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public virtual int FirstBulletNumber {
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get { return ViewState.GetInt ("FirstBulletNumber", 1); }
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set { ViewState ["FirstBulletNumber"] = value; }
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}
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protected override HtmlTextWriterTag TagKey {
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get {
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switch (BulletStyle) {
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case BulletStyle.Numbered:
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case BulletStyle.LowerAlpha:
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case BulletStyle.UpperAlpha:
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case BulletStyle.LowerRoman:
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case BulletStyle.UpperRoman:
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return HtmlTextWriterTag.Ol;
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case BulletStyle.NotSet:
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case BulletStyle.Disc:
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case BulletStyle.Circle:
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case BulletStyle.Square:
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case BulletStyle.CustomImage:
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default:
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return HtmlTextWriterTag.Ul;
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}
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}
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}
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[DefaultValueAttribute ("")]
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[TypeConverter (typeof (TargetConverter))]
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public virtual string Target {
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get { return ViewState.GetString ("Target", String.Empty); }
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set { ViewState ["Target"] = value; }
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}
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[EditorBrowsable (EditorBrowsableState.Never)]
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public override string Text {
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get { return String.Empty; }
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set { throw new NotSupportedException (); }
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}
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protected virtual void OnClick (BulletedListEventArgs e)
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{
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if (Events != null) {
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BulletedListEventHandler eh = (BulletedListEventHandler) (Events [ClickEvent]);
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if (eh != null)
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eh (this, e);
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}
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}
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}
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}
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