DotNet 4.8.1 build of DotNetBar

PROMS/DotNetBar Source Code/TreeGX/NodeDesigner.cs

@@ -0,0 +1,116 @@
+using System;
+using System.ComponentModel;
+using System.ComponentModel.Design;
+
+namespace DevComponents.Tree
+{
+	/// <summary>
+	/// Represents Windows Forms designer for Node object.
+	/// </summary>
+	public class NodeDesigner:ComponentDesigner
+	{
+		/// <summary>
+		/// Creates news instance of the class.
+		/// </summary>
+		public NodeDesigner()
+		{
+		}
+		
+		public override void Initialize(IComponent component) 
+		{
+			base.Initialize(component);
+			if(!component.Site.DesignMode)
+				return;
+
+			ISelectionService ss =(ISelectionService)GetService(typeof(ISelectionService));
+			if(ss!=null)
+				ss.SelectionChanged+=new EventHandler(OnSelectionChanged);
+		}
+		private void OnSelectionChanged(object sender, EventArgs e) 
+		{
+			ISelectionService ss = (ISelectionService)sender;
+			if(ss.PrimarySelection!=this.Component)
+			{
+				Node node = this.Component as Node;
+				if(ss.PrimarySelection is Node)
+				{
+					Node selected=ss.PrimarySelection as Node;
+					
+					if(selected.TreeControl!=node.TreeControl)
+					{
+						node.TreeControl.SelectedNode = null;
+					}
+				}
+				else
+                    node.TreeControl.SelectedNode=null;
+			}
+		}
+
+		public override DesignerVerbCollection Verbs 
+		{
+			get 
+			{
+				DesignerVerb[] verbs = new DesignerVerb[]
+					{
+						new DesignerVerb("Create Child Node", new EventHandler(CreateNode))
+				};
+				return new DesignerVerbCollection(verbs);
+			}
+		}
+
+		private void CreateNode(object sender, EventArgs e)
+		{
+			CreateNode(this.Component as Node);
+		}
+		
+		private Node CreateNode(Node parentNode)
+		{
+			IDesignerHost dh=(IDesignerHost)GetService(typeof(IDesignerHost));
+			if(dh==null)
+				return null;
+            
+			Node node=null;
+			TreeGX tree=((Node)this.Component).TreeControl;
+			tree.BeginUpdate();
+			try
+			{
+				IComponentChangeService change=this.GetService(typeof(IComponentChangeService)) as IComponentChangeService;
+				if(change!=null)
+				{
+					if(parentNode!=null)
+						change.OnComponentChanging(this.Component,TypeDescriptor.GetProperties(parentNode).Find("Nodes",true));
+					else
+						change.OnComponentChanging(this.Component,TypeDescriptor.GetProperties(tree).Find("Nodes",true));
+				}
+
+				node=dh.CreateComponent(typeof(Node)) as Node;
+				if(node!=null)
+				{
+					node.Text=node.Name;
+					node.Expanded = true;
+					if(parentNode==null)
+						tree.Nodes.Add(node);
+					else
+					{
+						parentNode.Nodes.Add(node);
+						parentNode.Expand();
+					}
+					
+					if(change!=null)
+					{
+						if(parentNode!=null)
+							change.OnComponentChanged(this.Component,TypeDescriptor.GetProperties(parentNode).Find("Nodes",true),null,null);
+						else
+							change.OnComponentChanged(this.Component,TypeDescriptor.GetProperties(tree).Find("Nodes",true),null,null);
+					}
+				}
+			}
+			finally
+			{
+				tree.EndUpdate();
+			}
+
+			return node;
+		}
+	}
+}