617 lines
15 KiB
C#
617 lines
15 KiB
C#
//
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// System.Web.UI.WebControls.MenuItem.cs
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//
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// Authors:
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// Lluis Sanchez Gual (lluis@novell.com)
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//
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// (C) 2004 Novell, Inc (http://www.novell.com)
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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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// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
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//
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using System;
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using System.Collections;
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using System.Text;
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using System.ComponentModel;
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using System.Web.UI;
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namespace System.Web.UI.WebControls
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{
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[ParseChildrenAttribute (true, "ChildItems")]
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public sealed class MenuItem: IStateManager, ICloneable
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{
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StateBag ViewState = new StateBag ();
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MenuItemCollection items;
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bool marked;
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Menu menu;
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MenuItem parent;
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int index;
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string path;
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int depth = -1;
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object dataItem;
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IHierarchyData hierarchyData;
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bool gotBinding;
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MenuItemBinding binding;
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PropertyDescriptorCollection boundProperties;
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public MenuItem ()
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{
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}
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public MenuItem (string text)
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{
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Text = text;
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}
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public MenuItem (string text, string value)
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{
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Text = text;
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Value = value;
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}
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public MenuItem (string text, string value, string imageUrl)
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{
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Text = text;
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Value = value;
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ImageUrl = imageUrl;
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}
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public MenuItem (string text, string value, string imageUrl, string navigateUrl)
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{
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Text = text;
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Value = value;
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ImageUrl = imageUrl;
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NavigateUrl = navigateUrl;
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}
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public MenuItem (string text, string value, string imageUrl, string navigateUrl, string target)
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{
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Text = text;
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Value = value;
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ImageUrl = imageUrl;
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NavigateUrl = navigateUrl;
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Target = target;
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}
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[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
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[Browsable (false)]
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public int Depth {
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get {
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if (depth != -1) return depth;
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if (Parent == null) depth = 0;
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else depth = Parent.Depth + 1;
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return depth;
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}
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}
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void ResetPathData ()
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{
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path = null;
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depth = -1;
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gotBinding = false;
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}
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internal Menu Menu {
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get { return menu; }
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set {
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menu = value;
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if (items != null)
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items.SetMenu (menu);
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ResetPathData ();
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}
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}
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[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
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[DefaultValue (false)]
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[Browsable (false)]
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public bool DataBound {
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get { return ViewState ["DataBound"] == null ? false : (bool) ViewState ["DataBound"]; }
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private set { ViewState ["DataBound"] = value; }
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}
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[DefaultValue (null)]
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[Browsable (false)]
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public object DataItem {
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get {
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if (!DataBound) throw new InvalidOperationException ("MenuItem is not data bound.");
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return dataItem;
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}
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}
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[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
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[DefaultValue ("")]
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[Browsable (false)]
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public string DataPath {
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get {
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return ViewState ["DataPath"] == null ? String.Empty : (String) ViewState ["DataPath"];
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}
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private set {
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ViewState ["DataPath"] = value;
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}
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}
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[MergableProperty (false)]
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[Browsable (false)]
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[PersistenceMode (PersistenceMode.InnerDefaultProperty)]
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public MenuItemCollection ChildItems {
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get {
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if (items == null) {
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items = new MenuItemCollection (this);
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if (((IStateManager)this).IsTrackingViewState)
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((IStateManager)items).TrackViewState();
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}
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return items;
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}
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}
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[DefaultValue ("")]
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[UrlProperty]
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[Editor ("System.Web.UI.Design.ImageUrlEditor, " + Consts.AssemblySystem_Design, typeof (System.Drawing.Design.UITypeEditor))]
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public string ImageUrl {
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get {
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return ViewState ["ImageUrl"] == null ? String.Empty : (String) ViewState ["ImageUrl"];
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}
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set {
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ViewState ["ImageUrl"] = value;
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}
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}
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[DefaultValue ("")]
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[UrlProperty]
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[Editor ("System.Web.UI.Design.UrlEditor, " + Consts.AssemblySystem_Design, typeof (System.Drawing.Design.UITypeEditor))]
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public string NavigateUrl {
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get {
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return ViewState ["NavigateUrl"] == null ? String.Empty : (String) ViewState ["NavigateUrl"];
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}
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set {
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ViewState ["NavigateUrl"] = value;
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}
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}
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[DefaultValue ("")]
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[UrlProperty]
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[Editor ("System.Web.UI.Design.ImageUrlEditor, " + Consts.AssemblySystem_Design, typeof (System.Drawing.Design.UITypeEditor))]
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public string PopOutImageUrl {
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get {
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return ViewState ["PopOutImageUrl"] == null ? String.Empty : (String) ViewState ["PopOutImageUrl"];
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}
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set {
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ViewState ["PopOutImageUrl"] = value;
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}
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}
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[DefaultValue ("")]
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public string Target {
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get {
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return ViewState ["Target"] == null ? String.Empty : (String) ViewState ["Target"];
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}
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set {
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ViewState ["Target"] = value;
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}
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}
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[Localizable (true)]
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[DefaultValue ("")]
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public string Text {
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get {
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object o = ViewState ["Text"];
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if (o == null)
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o = ViewState ["Value"];
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if (o != null)
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return (string) o;
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return String.Empty;
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}
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set {
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ViewState ["Text"] = value;
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}
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}
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[Localizable (true)]
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[DefaultValue ("")]
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public string ToolTip {
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get {
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return ViewState ["ToolTip"] == null ? String.Empty : (String) ViewState ["ToolTip"];
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}
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set {
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ViewState ["ToolTip"] = value;
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}
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}
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[Localizable (true)]
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[DefaultValue ("")]
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public string Value {
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get {
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object o = ViewState ["Value"];
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if (o == null)
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o = ViewState ["Text"];
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if (o != null)
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return (string) o;
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return String.Empty;
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}
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set {
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ViewState ["Value"] = value;
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}
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}
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[DefaultValue ("")]
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[UrlProperty]
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[Editor ("System.Web.UI.Design.ImageUrlEditor, " + Consts.AssemblySystem_Design, typeof (System.Drawing.Design.UITypeEditor))]
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public string SeparatorImageUrl {
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get {
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return ViewState ["SeparatorImageUrl"] == null ? String.Empty : (String) ViewState ["SeparatorImageUrl"];
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}
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set {
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ViewState ["SeparatorImageUrl"] = value;
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}
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}
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[BrowsableAttribute (true)]
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[DefaultValueAttribute (true)]
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public bool Selectable {
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get {
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return ViewState ["Selectable"] == null ? true : (bool) ViewState ["Selectable"];
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}
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set {
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ViewState ["Selectable"] = value;
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}
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}
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[BrowsableAttribute (true)]
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[DefaultValueAttribute (true)]
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public bool Enabled {
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get {
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return ViewState ["Enabled"] == null ? true : (bool) ViewState ["Enabled"];
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}
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set {
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ViewState ["Enabled"] = value;
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}
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}
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internal bool BranchEnabled {
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get { return Enabled && (parent == null || parent.BranchEnabled); }
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}
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[DefaultValue (false)]
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[Browsable (true)]
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public bool Selected {
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get {
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if (menu != null)
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return menu.SelectedItem == this;
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else
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return false;
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}
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set {
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if (menu != null) {
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if (!value && menu.SelectedItem == this)
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menu.SetSelectedItem (null);
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else if (value)
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menu.SetSelectedItem (this);
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}
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}
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}
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[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
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[Browsable (false)]
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public MenuItem Parent {
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get { return parent; }
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}
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[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
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[Browsable (false)]
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public string ValuePath {
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get {
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if (menu == null) return Value;
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StringBuilder sb = new StringBuilder (Value);
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MenuItem item = parent;
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while (item != null) {
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sb.Insert (0, menu.PathSeparator);
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sb.Insert (0, item.Value);
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item = item.Parent;
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}
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return sb.ToString ();
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}
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}
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internal int Index {
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get { return index; }
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set { index = value; ResetPathData (); }
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}
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internal void SetParent (MenuItem item) {
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parent = item;
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ResetPathData ();
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}
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internal string Path {
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get {
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if (path != null) return path;
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StringBuilder sb = new StringBuilder (index.ToString());
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MenuItem item = parent;
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while (item != null) {
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sb.Insert (0, '_');
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sb.Insert (0, item.Index.ToString ());
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item = item.Parent;
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}
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path = sb.ToString ();
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return path;
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}
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}
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internal bool HasChildData {
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get { return items != null; }
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}
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void IStateManager.LoadViewState (object savedState)
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{
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if (savedState == null)
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return;
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object[] states = (object[]) savedState;
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ViewState.LoadViewState (states [0]);
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if (states [1] != null)
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((IStateManager)ChildItems).LoadViewState (states [1]);
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}
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object IStateManager.SaveViewState ()
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{
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object[] states = new object[2];
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states[0] = ViewState.SaveViewState();
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states[1] = (items == null ? null : ((IStateManager)items).SaveViewState());
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for (int i = 0; i < states.Length; i++) {
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if (states [i] != null)
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return states;
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}
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return null;
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}
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void IStateManager.TrackViewState ()
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{
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if (marked) return;
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marked = true;
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ViewState.TrackViewState();
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if (items != null)
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((IStateManager)items).TrackViewState ();
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}
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bool IStateManager.IsTrackingViewState
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{
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get { return marked; }
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}
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internal void SetDirty ()
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{
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ViewState.SetDirty (true);
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if (items != null)
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items.SetDirty ();
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}
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object ICloneable.Clone ()
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{
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MenuItem nod = new MenuItem ();
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foreach (DictionaryEntry e in ViewState)
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nod.ViewState [(string)e.Key] = e.Value;
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foreach (ICloneable c in ChildItems)
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nod.ChildItems.Add ((MenuItem)c.Clone ());
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return nod;
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}
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internal void Bind (IHierarchyData hierarchyData)
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{
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this.hierarchyData = hierarchyData;
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DataBound = true;
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DataPath = hierarchyData.Path;
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dataItem = hierarchyData.Item;
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MenuItemBinding bin = GetBinding ();
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if (bin != null) {
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// Bind Enabled property
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if (bin.EnabledField != "")
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try { Enabled = Convert.ToBoolean (GetBoundPropertyValue (bin.EnabledField)); }
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catch { Enabled = bin.Enabled; }
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else
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Enabled = bin.Enabled;
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// Bind ImageUrl property
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if (bin.ImageUrlField.Length > 0) {
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ImageUrl = Convert.ToString (GetBoundPropertyValue (bin.ImageUrlField));
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if (ImageUrl.Length == 0)
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ImageUrl = bin.ImageUrl;
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}
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else if (bin.ImageUrl.Length > 0)
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ImageUrl = bin.ImageUrl;
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// Bind NavigateUrl property
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if (bin.NavigateUrlField.Length > 0) {
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NavigateUrl = Convert.ToString (GetBoundPropertyValue (bin.NavigateUrlField));
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if (NavigateUrl.Length == 0)
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NavigateUrl = bin.NavigateUrl;
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}
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else if (bin.NavigateUrl.Length > 0)
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NavigateUrl = bin.NavigateUrl;
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// Bind PopOutImageUrl property
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if (bin.PopOutImageUrlField.Length > 0) {
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PopOutImageUrl = Convert.ToString (GetBoundPropertyValue (bin.PopOutImageUrlField));
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if (PopOutImageUrl.Length == 0)
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PopOutImageUrl = bin.PopOutImageUrl;
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}
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else if (bin.PopOutImageUrl.Length > 0)
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PopOutImageUrl = bin.PopOutImageUrl;
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// Bind Selectable property
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if (bin.SelectableField != "")
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try { Selectable = Convert.ToBoolean (GetBoundPropertyValue (bin.SelectableField)); }
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catch { Selectable = bin.Selectable; }
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else
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Selectable = bin.Selectable;
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// Bind SeparatorImageUrl property
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if (bin.SeparatorImageUrlField.Length > 0) {
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SeparatorImageUrl = Convert.ToString (GetBoundPropertyValue (bin.SeparatorImageUrlField));
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if (SeparatorImageUrl.Length == 0)
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SeparatorImageUrl = bin.SeparatorImageUrl;
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}
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else if (bin.SeparatorImageUrl.Length > 0)
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SeparatorImageUrl = bin.SeparatorImageUrl;
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// Bind Target property
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if (bin.TargetField.Length > 0) {
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Target = Convert.ToString (GetBoundPropertyValue (bin.TargetField));
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if (Target.Length == 0)
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Target = bin.Target;
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}
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else if (bin.Target.Length > 0)
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Target = bin.Target;
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// Bind ToolTip property
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if (bin.ToolTipField.Length > 0) {
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ToolTip = Convert.ToString (GetBoundPropertyValue (bin.ToolTipField));
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if (ToolTip.Length == 0)
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ToolTip = bin.ToolTip;
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}
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else if (bin.ToolTip.Length > 0)
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ToolTip = bin.ToolTip;
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// Bind Value property
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string value = null;
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if (bin.ValueField.Length > 0) {
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value = Convert.ToString (GetBoundPropertyValue (bin.ValueField));
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}
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if (String.IsNullOrEmpty (value)) {
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if (bin.Value.Length > 0)
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value = bin.Value;
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else if (bin.Text.Length > 0)
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value = bin.Text;
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else
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value = String.Empty;
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}
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Value = value;
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// Bind Text property
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string text = null;
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if (bin.TextField.Length > 0) {
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text = Convert.ToString (GetBoundPropertyValue (bin.TextField));
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if (bin.FormatString.Length > 0)
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text = string.Format (bin.FormatString, text);
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}
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if (String.IsNullOrEmpty (text)) {
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if (bin.Text.Length > 0)
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text = bin.Text;
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else if (bin.Value.Length > 0)
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text = bin.Value;
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else
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text = String.Empty;
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}
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Text = text;
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}
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else {
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Text = Value = GetDefaultBoundText ();
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}
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INavigateUIData navigateUIData = hierarchyData as INavigateUIData;
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if (navigateUIData != null) {
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ToolTip = navigateUIData.Description;
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Text = navigateUIData.ToString ();
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NavigateUrl = navigateUIData.NavigateUrl;
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}
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}
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internal void SetDataItem (object item)
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{
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dataItem = item;
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}
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internal void SetDataPath (string path)
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{
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DataPath = path;
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}
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internal void SetDataBound (bool bound)
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{
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DataBound = bound;
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}
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string GetDefaultBoundText ()
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{
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if (hierarchyData != null) return hierarchyData.ToString ();
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else if (dataItem != null) return dataItem.ToString ();
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else return string.Empty;
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}
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string GetDataItemType ()
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{
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if (hierarchyData != null) return hierarchyData.Type;
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else if (dataItem != null) return dataItem.GetType().ToString ();
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else return string.Empty;
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}
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MenuItemBinding GetBinding ()
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{
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if (menu == null) return null;
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if (gotBinding) return binding;
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binding = menu.FindBindingForItem (GetDataItemType (), Depth);
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gotBinding = true;
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return binding;
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}
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object GetBoundPropertyValue (string name)
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{
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if (boundProperties == null) {
|
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if (hierarchyData != null)
|
|
boundProperties = TypeDescriptor.GetProperties (hierarchyData);
|
|
else
|
|
boundProperties = TypeDescriptor.GetProperties (dataItem);
|
|
}
|
|
|
|
PropertyDescriptor prop = boundProperties.Find (name, true);
|
|
if (prop == null)
|
|
throw new InvalidOperationException ("Property '" + name + "' not found in data bound item");
|
|
|
|
if (hierarchyData != null)
|
|
return prop.GetValue (hierarchyData);
|
|
else
|
|
return prop.GetValue (dataItem);
|
|
}
|
|
}
|
|
}
|
|
|