DotNet 4.8.1 build of DotNetBar

PROMS/DotNetBar Source Code/TreeGX/NodeCollection.cs

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+using System;
+using System.Collections;
+using System.ComponentModel;
+
+namespace DevComponents.Tree
+{
+	/// <summary>
+	/// Represents collection for Node objects.
+	/// </summary>
+	public class NodeCollection:CollectionBase 
+	{
+		#region Private Variables
+		private Node m_ParentNode=null;
+		private TreeGX m_TreeControl=null;
+		private eTreeAction m_SourceAction=eTreeAction.Code;
+		#endregion
+
+		#region Internal Implementation
+		public NodeCollection()
+		{
+		}
+		/// <summary>
+		/// Gets or sets the node this collection is associated with.
+		/// </summary>
+		[Browsable(false),DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
+		public Node ParentNode
+		{
+			get {return m_ParentNode;}
+		}
+		/// <summary>
+		/// Sets the node collection belongs to.
+		/// </summary>
+		/// <param name="parent">Node that is parent of this collection.</param>
+		internal void SetParentNode(Node parent)
+		{
+			m_ParentNode=parent;
+		}
+
+		internal TreeGX TreeControl
+		{
+			get {return m_TreeControl;}
+			set {m_TreeControl=value;}
+		}
+
+		/// <summary>
+		/// Adds new object to the collection.
+		/// </summary>
+		/// <param name="node">Object to add.</param>
+		/// <returns>Index of newly added object.</returns>
+		public int Add(Node node)
+		{
+			return List.Add(node);
+		}
+		
+		/// <summary>
+		/// Adds new object to the collection and provides information about the source of the command
+		/// </summary>
+		/// <param name="node">Node to add</param>
+		/// <param name="action">Source action</param>
+		/// <returns></returns>
+		public int Add(Node node, eTreeAction action)
+		{
+			m_SourceAction = action;
+			return List.Add(node);
+		}
+		
+		/// <summary>
+		/// Adds an array of objects to the collection. 
+		/// </summary>
+		/// <param name="nodes">Array of Node objects.</param>
+		public void AddRange(Node[] nodes)
+		{
+			foreach(Node node in nodes)
+				List.Add(node);
+		}
+		
+		/// <summary>
+		/// Returns reference to the object in collection based on it's index.
+		/// </summary>
+		public Node this[int index]
+		{
+			get {return (Node)(List[index]);}
+			set {List[index] = value;}
+		}
+
+		/// <summary>
+		/// Inserts new object into the collection.
+		/// </summary>
+		/// <param name="index">Position of the object.</param>
+		/// <param name="value">Object to insert.</param>
+		public void Insert(int index, Node value) 
+		{
+			List.Insert(index, value);
+		}
+		
+		/// <summary>
+		/// Inserts new object into the collection.
+		/// </summary>
+		/// <param name="index">Position of the object.</param>
+		/// <param name="value">Object to insert.</param>
+		/// <param name="action">Action that is causing the event</param>
+		public void Insert(int index, Node value, eTreeAction action) 
+		{
+			m_SourceAction = action;
+			List.Insert(index, value);
+		}
+
+		/// <summary>
+		/// Returns index of the object inside of the collection.
+		/// </summary>
+		/// <param name="value">Reference to the object.</param>
+		/// <returns>Index of the object.</returns>
+		public int IndexOf(Node value) 
+		{
+			return List.IndexOf(value);
+		}
+
+		/// <summary>
+		/// Returns whether collection contains specified object.
+		/// </summary>
+		/// <param name="value">Object to look for.</param>
+		/// <returns>true if object is part of the collection, otherwise false.</returns>
+		public bool Contains(Node value) 
+		{
+			return List.Contains(value);
+		}
+
+		/// <summary>
+		/// Removes specified object from the collection.
+		/// </summary>
+		/// <param name="value"></param>
+		public void Remove(Node value) 
+		{
+			List.Remove(value);
+		}
+		
+		/// <summary>
+		/// Removes specified object from the collection and provides information about source of the command
+		/// </summary>
+		/// <param name="node">Node to remove</param>
+		/// <param name="action">Source action</param>
+		public void Remove(Node node, eTreeAction action)
+		{
+			m_SourceAction = action;
+			List.Remove(node);
+		}
+		
+		protected override void OnRemove(int index, object value)
+		{
+			TreeGX tree = GetTreeControl();
+			if(tree!=null)
+				tree.InvokeBeforeNodeRemove(m_SourceAction, value as Node, m_ParentNode);
+			base.OnRemove (index, value);
+		}
+
+
+		protected override void OnRemoveComplete(int index,object value)
+		{
+			base.OnRemoveComplete(index,value);
+			Node node=value as Node;
+			node.SetParent(null);
+			node.internalTreeControl=null;
+			if(m_ParentNode!=null) m_ParentNode.OnChildNodeRemoved(node);
+			
+			TreeGX tree = GetTreeControl();
+			if(tree!=null)
+			{
+				tree.InvokeAfterNodeRemove(m_SourceAction, value as Node, m_ParentNode);
+				tree.NodeRemoved(m_SourceAction, value as Node, m_ParentNode, index);
+			}
+		}
+		
+		protected override void OnInsert(int index, object value)
+		{
+			TreeGX tree = GetTreeControl();
+			if(tree!=null)
+				tree.InvokeBeforeNodeInsert(m_SourceAction, value as Node, m_ParentNode);
+			base.OnInsert (index, value);
+		}
+
+		protected override void OnInsertComplete(int index,object value)
+		{
+			base.OnInsertComplete(index,value);
+			Node node=value as Node;
+			if(m_ParentNode!=null)
+			{
+				if(node.Parent!=null && node.Parent!=m_ParentNode)
+					node.Remove();
+				node.SetParent(m_ParentNode);
+			}
+			node.internalTreeControl=m_TreeControl;
+			
+			if(m_ParentNode!=null) m_ParentNode.OnChildNodeInserted(node);
+			
+			TreeGX tree = GetTreeControl();
+			if(tree!=null)
+				tree.InvokeAfterNodeInsert(m_SourceAction, value as Node, m_ParentNode);
+			
+			m_SourceAction = eTreeAction.Code;
+		}
+
+		/// <summary>
+		/// Copies collection into the specified array.
+		/// </summary>
+		/// <param name="array">Array to copy collection to.</param>
+		/// <param name="index">Starting index.</param>
+		public void CopyTo(Node[] array, int index) 
+		{
+			List.CopyTo(array, index);
+		}
+
+		/// <summary>
+		/// Copies contained items to the Node array.
+		/// </summary>
+		/// <param name="array">Array to copy to.</param>
+		internal void CopyTo(Node[] array)
+		{
+			List.CopyTo(array,0);
+		}
+
+		protected override void OnClear()
+		{
+			foreach(Node node in this.List)
+			{
+				node.SetParent(null);
+				node.internalTreeControl=null;
+			}
+			
+			base.OnClear();
+		}
+
+        protected override void OnClearComplete()
+        {
+            if (m_TreeControl != null && !PassiveCollection)
+            {
+                m_TreeControl.OnNodesCleared();
+            }
+            else if (m_ParentNode != null && !PassiveCollection)
+                m_ParentNode.OnNodesCleared();
+
+            TreeGX tree = GetTreeControl();
+            if (tree != null)
+            {
+                tree.ValidateSelectedNode();
+            }
+
+            base.OnClearComplete();
+        }
+		
+		private TreeGX GetTreeControl()
+		{
+			if(m_TreeControl!=null)
+				return m_TreeControl;
+			if(m_ParentNode!=null)
+				return m_ParentNode.TreeControl;
+			return null;
+		}
+
+        private bool _PassiveCollection = false;
+        internal bool PassiveCollection
+        {
+            get { return _PassiveCollection; }
+            set
+            {
+                _PassiveCollection = value;
+            }
+        }
+		#endregion
+	}
+
+	#region NodeCollectionEditor
+	/// <summary>
+	/// Support for Node tabs design-time editor.
+	/// </summary>
+	public class NodeCollectionEditor:System.ComponentModel.Design.CollectionEditor
+	{
+		public NodeCollectionEditor(Type type):base(type)
+		{
+		}
+		protected override Type CreateCollectionItemType()
+		{
+			return typeof(Node);
+		}
+		protected override Type[] CreateNewItemTypes()
+		{
+			return new Type[] {typeof(Node)};
+		}
+		protected override object CreateInstance(Type itemType)
+		{
+			object item=base.CreateInstance(itemType);
+			if(item is Node)
+			{
+				Node node=item as Node;
+				node.Text=node.Name;
+			}
+			return item;
+		}
+	}
+	#endregion
+}