C# ItemToolboxNode类代码示例

		bool ICustomFilteringToolboxConsumer.SupportsItem (ItemToolboxNode item)
		{
			ITextToolboxNode textNode = item as ITextToolboxNode;
			if (textNode == null)
				return false;
			
			//string filename = this.IsUntitled ? UntitledName : ContentName;
			//int i = filename.LastIndexOf ('.');
			//string ext = i < 0? null : filename.Substring (i + 1);
			
			return textNode.IsCompatibleWith (base.WorkbenchWindow.Document);
		}

		public void ConsumeItem (ItemToolboxNode node)
		{
			if (node is ToolboxItemToolboxNode)
				editorProcess.Editor.UseToolboxNode (node);
		}

		//Used if ToolboxItemFilterAttribute demands ToolboxItemFilterType.Custom
		//If not expecting it, should just return false
		bool IToolboxConsumer.CustomFilterSupports (ItemToolboxNode item)
		{
			ComponentToolboxNode cnode = item as ComponentToolboxNode;
			if (cnode != null && gproject.SteticProject != null) {
				if (cnode.GtkVersion == null || Mono.Addins.Addin.CompareVersions (gproject.SteticProject.TargetGtkVersion, cnode.GtkVersion) <= 0)
					return true;
			}
			return false;
		}

		public Toolbox (ToolboxService toolboxService, IPadWindow container)
		{			
			this.toolboxService = toolboxService;
			this.container = container;
			
			#region Toolbar
			DockItemToolbar toolbar = container.GetToolbar (PositionType.Top);
		
			filterEntry = new SearchEntry();
			filterEntry.Ready = true;
			filterEntry.HasFrame = true;
			filterEntry.WidthRequest = 150;
			filterEntry.Changed += new EventHandler (filterTextChanged);
			filterEntry.Show ();

			toolbar.Add (filterEntry, true);
			
			catToggleButton = new ToggleButton ();
			catToggleButton.Image = new Image (Ide.Gui.Stock.GroupByCategory, IconSize.Menu);
			catToggleButton.Toggled += new EventHandler (toggleCategorisation);
			catToggleButton.TooltipText = GettextCatalog.GetString ("Show categories");
			toolbar.Add (catToggleButton);
			
			compactModeToggleButton = new ToggleButton ();
			compactModeToggleButton.Image = new ImageView (ImageService.GetIcon ("md-compact-display", IconSize.Menu));
			compactModeToggleButton.Toggled += new EventHandler (ToggleCompactMode);
			compactModeToggleButton.TooltipText = GettextCatalog.GetString ("Use compact display");
			toolbar.Add (compactModeToggleButton);
	
			toolboxAddButton = new Button (new Gtk.Image (Ide.Gui.Stock.Add, IconSize.Menu));
			toolbar.Add (toolboxAddButton);
			toolboxAddButton.TooltipText = GettextCatalog.GetString ("Add toolbox items");
			toolboxAddButton.Clicked += new EventHandler (toolboxAddButton_Clicked);
			toolbar.ShowAll ();

			#endregion
			
			toolboxWidget = new ToolboxWidget ();
			toolboxWidget.SelectedItemChanged += delegate {
				selectedNode = this.toolboxWidget.SelectedItem != null ? this.toolboxWidget.SelectedItem.Tag as ItemToolboxNode : null;
				toolboxService.SelectItem (selectedNode);
			};
			this.toolboxWidget.DragBegin += delegate(object sender, Gtk.DragBeginArgs e) {
				
				if (this.toolboxWidget.SelectedItem != null) {
					this.toolboxWidget.HideTooltipWindow ();
					toolboxService.DragSelectedItem (this.toolboxWidget, e.Context);
				}
			};
			this.toolboxWidget.ActivateSelectedItem += delegate {
				toolboxService.UseSelectedItem ();
			};
			
			fontChanger = new MonoDevelop.Ide.Gui.PadFontChanger (toolboxWidget, toolboxWidget.SetCustomFont, toolboxWidget.QueueResize);
			
			this.toolboxWidget.DoPopupMenu = ShowPopup;
			
			scrolledWindow = new MonoDevelop.Components.CompactScrolledWindow ();
			base.PackEnd (scrolledWindow, true, true, 0);
			base.FocusChain = new Gtk.Widget [] { scrolledWindow };
			
			//Initialise self
			scrolledWindow.ShadowType = ShadowType.None;
			scrolledWindow.VscrollbarPolicy = PolicyType.Automatic;
			scrolledWindow.HscrollbarPolicy = PolicyType.Never;
			scrolledWindow.WidthRequest = 150;
			scrolledWindow.Add (this.toolboxWidget);
			
			//update view when toolbox service updated
			toolboxService.ToolboxContentsChanged += delegate { Refresh (); };
			toolboxService.ToolboxConsumerChanged += delegate { Refresh (); };
			Refresh ();
			
			//set initial state
			this.toolboxWidget.ShowCategories = catToggleButton.Active = true;
			compactModeToggleButton.Active = MonoDevelop.Core.PropertyService.Get ("ToolboxIsInCompactMode", false);
			this.toolboxWidget.IsListMode  = !compactModeToggleButton.Active;
			this.ShowAll ();
		}

 public bool CustomFilterSupports(ItemToolboxNode item)
 {
     return false;
 }

		public ToolboxUsedEventArgs (IToolboxConsumer consumer, ItemToolboxNode item)
		{
			this.item = item;
			this.consumer = consumer;
		}

		public void DragItem (ItemToolboxNode item, Widget source, Gdk.DragContext ctx)
		{
		}

 public abstract void ConsumeItem(ItemToolboxNode item);

		public void ConsumeItem (ItemToolboxNode node)
		{
			if (node is ToolboxItemToolboxNode)
				host.UseToolboxNode (node);
		}

		private void handleToolboxNode (ItemToolboxNode node)
		{
			ToolboxItemToolboxNode tiNode = node as ToolboxItemToolboxNode;
				
			if (tiNode != null) {
				//load the type into this process and get the ToolboxItem 
				tiNode.Type.Load ();
				System.Drawing.Design.ToolboxItem ti = tiNode.GetToolboxItem ();
				
				//web controls have sample HTML that need to be deserialised, in a ToolboxDataAttribute
				//TODO: Fix WebControlToolboxItem and (mono classlib's use of it) so we don't have to mess around with type lookups and attributes here
				if (ti.AssemblyName != null && ti.TypeName != null) {
					//look up and register the type
					ITypeResolutionService typeRes = (ITypeResolutionService)designerHost.GetService (typeof(ITypeResolutionService));					
					typeRes.ReferenceAssembly (ti.AssemblyName);
					Type controlType = typeRes.GetType (ti.TypeName, true);
					
					//read the WebControlToolboxItem data from the attribute
					AttributeCollection atts = TypeDescriptor.GetAttributes (controlType);
					
					System.Web.UI.ToolboxDataAttribute tda = (System.Web.UI.ToolboxDataAttribute)atts [typeof(System.Web.UI.ToolboxDataAttribute)];
						
					//if it's present
					if (tda != null && tda.Data.Length > 0) {
						//look up the tag's prefix and insert it into the data						
						WebFormReferenceManager webRef = designerHost.GetService (typeof(WebFormReferenceManager)) as WebFormReferenceManager;
						if (webRef == null)
							throw new Exception("Host does not provide an IWebFormReferenceManager");
						string aspText = String.Format (tda.Data, webRef.GetTagPrefix (controlType));
						System.Diagnostics.Trace.WriteLine ("Toolbox processing ASP.NET item data: " + aspText);
							
						//and add it to the document
						designerHost.RootDocument.InsertFragment (aspText);
						return;
					}
				}
				
				//No ToolboxDataAttribute? Get the ToolboxItem to create the components itself
				ti.CreateComponents (designerHost);
			}
		}

		public void UseToolboxNode (ItemToolboxNode node)
		{
			//invoke in GUI thread as it catches and displays exceptions nicely
			Gtk.Application.Invoke ( delegate { handleToolboxNode (node); }); 
		}

		//evaluate a filter attribute against a list, and check whether permitted
		private bool FilterPermitted (ItemToolboxNode node, ToolboxItemFilterAttribute desFa, 
		    ICollection<ToolboxItemFilterAttribute> filterAgainst, IToolboxConsumer consumer)
		{
			switch (desFa.FilterType) {
				case ToolboxItemFilterType.Allow:
					//this is really for matching some other filter string against
					return true;
				
				case ToolboxItemFilterType.Custom:
					return consumer.CustomFilterSupports (node);
					
				case ToolboxItemFilterType.Prevent:
					//if host and toolboxitem have same filterstring, then not permitted
					foreach (ToolboxItemFilterAttribute itemFa in filterAgainst)
						if (desFa.Match (itemFa))
							return false;
					return true;
				
				case ToolboxItemFilterType.Require:
					//if host and toolboxitem have same filterstring, then permitted, unless one is prevented
					foreach (ToolboxItemFilterAttribute itemFa in filterAgainst)
						if (desFa.Match (itemFa) && (desFa.FilterType != ToolboxItemFilterType.Prevent))
							return true;
					return false;
			}
			throw new InvalidOperationException ("Unexpected ToolboxItemFilterType value.");
		}

 public void DragItem(ItemToolboxNode item, Widget source, Gdk.DragContext ctx)
 {
     drag_item = item;
     _source = source;
     _source.DragDataGet += OnDragDataGet;
     _source.DragEnd += OnDragEnd;
 }

		public ToolboxSelectionChangedEventArgs (ItemToolboxNode item)
		{
			this.item = item;
		}

		public void RemoveUserItem (ItemToolboxNode node)
		{
			Configuration.ItemList.Remove (node);
			SaveConfiguration ();
			OnToolboxContentsChanged ();
		}