treelistviewitemseditor.cs

树形列表控件

using System;
using System.Drawing;
using System.Drawing.Design;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Windows.Forms.Design;

namespace System.Windows.Forms
{
	/// <summary>
	/// Editor for the TreeListView.Items property
	/// </summary>
	public class TreeListViewItemsEditorForm : System.Windows.Forms.Form
	{
		private TreeListViewItemCollection _items;
		/// <summary>
		/// Get the items that are edited in this form
		/// </summary>
		public TreeListViewItemCollection Items{get{return(_items);}}
		private System.Windows.Forms.Button buttonOk;
		private System.Windows.Forms.GroupBox groupBox1;
		private System.Windows.Forms.TreeView treeView1;
		private System.Windows.Forms.Splitter splitter1;
		private System.Windows.Forms.PropertyGrid propertyGrid1;
		private System.Windows.Forms.Button buttonRemove;
		private System.Windows.Forms.Button buttonAdd;
		private System.ComponentModel.Container components = null;

		/// <summary>
		/// Constructor
		/// </summary>
		/// <param name="collection"></param>
		public TreeListViewItemsEditorForm(TreeListViewItemCollection collection)
		{
			InitializeComponent();
			_items = collection;
			treeView1.SelectedNode = null;
			foreach(TreeListViewItem item in _items)
			{
				TreeNode node = new TreeNode(item.Text);
				node.Tag = item;
				treeView1.Nodes.Add(node);
				AddChildren(node);
				node.Expand();
			}
		}
		private void AddChildren(TreeNode node)
		{
			TreeListViewItem tlvitem = (TreeListViewItem) node.Tag;
			foreach(TreeListViewItem item in tlvitem.Items)
			{
				TreeNode child = new TreeNode(item.Text);
				child.Tag = item;
				node.Nodes.Add(child);
				AddChildren(child);
				child.Expand();
			}
		}

		/// <summary>
		/// Nettoyage des ressources utilis閑s.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// M閠hode requise pour la prise en charge du concepteur - ne modifiez pas
		/// le contenu de cette m閠hode avec l'閐iteur de code.
		/// </summary>
		private void InitializeComponent()
		{
			this.buttonOk = new System.Windows.Forms.Button();
			this.groupBox1 = new System.Windows.Forms.GroupBox();
			this.propertyGrid1 = new System.Windows.Forms.PropertyGrid();
			this.buttonRemove = new System.Windows.Forms.Button();
			this.buttonAdd = new System.Windows.Forms.Button();
			this.splitter1 = new System.Windows.Forms.Splitter();
			this.treeView1 = new System.Windows.Forms.TreeView();
			this.groupBox1.SuspendLayout();
			this.SuspendLayout();
			// 
			// buttonOk
			// 
			this.buttonOk.Anchor = (System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right);
			this.buttonOk.Location = new System.Drawing.Point(360, 344);
			this.buttonOk.Name = "buttonOk";
			this.buttonOk.TabIndex = 0;
			this.buttonOk.Text = "Ok";
			this.buttonOk.Click += new System.EventHandler(this.buttonOk_Click);
			// 
			// groupBox1
			// 
			this.groupBox1.Anchor = (((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
				| System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right);
			this.groupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {
																					this.propertyGrid1,
																					this.buttonRemove,
																					this.buttonAdd,
																					this.splitter1,
																					this.treeView1});
			this.groupBox1.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.groupBox1.Location = new System.Drawing.Point(8, 8);
			this.groupBox1.Name = "groupBox1";
			this.groupBox1.Size = new System.Drawing.Size(428, 328);
			this.groupBox1.TabIndex = 2;
			this.groupBox1.TabStop = false;
			// 
			// propertyGrid1
			// 
			this.propertyGrid1.Anchor = (((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
				| System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right);
			this.propertyGrid1.CommandsVisibleIfAvailable = true;
			this.propertyGrid1.LargeButtons = false;
			this.propertyGrid1.LineColor = System.Drawing.SystemColors.ScrollBar;
			this.propertyGrid1.Location = new System.Drawing.Point(192, 16);
			this.propertyGrid1.Name = "propertyGrid1";
			this.propertyGrid1.Size = new System.Drawing.Size(232, 272);
			this.propertyGrid1.TabIndex = 7;
			this.propertyGrid1.Text = "propertyGrid1";
			this.propertyGrid1.ViewBackColor = System.Drawing.SystemColors.Window;
			this.propertyGrid1.ViewForeColor = System.Drawing.SystemColors.WindowText;
			this.propertyGrid1.PropertyValueChanged += new System.Windows.Forms.PropertyValueChangedEventHandler(this.propertyGrid1_PropertyValueChanged);
			// 
			// buttonRemove
			// 
			this.buttonRemove.Anchor = (System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right);
			this.buttonRemove.Location = new System.Drawing.Point(344, 296);
			this.buttonRemove.Name = "buttonRemove";
			this.buttonRemove.TabIndex = 6;
			this.buttonRemove.Text = "Remove";
			this.buttonRemove.Click += new System.EventHandler(this.buttonRemove_Click);
			// 
			// buttonAdd
			// 
			this.buttonAdd.Anchor = (System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left);
			this.buttonAdd.Location = new System.Drawing.Point(192, 296);
			this.buttonAdd.Name = "buttonAdd";
			this.buttonAdd.TabIndex = 5;
			this.buttonAdd.Text = "Add";
			this.buttonAdd.Click += new System.EventHandler(this.buttonAdd_Click);
			// 
			// splitter1
			// 
			this.splitter1.Location = new System.Drawing.Point(184, 16);
			this.splitter1.Name = "splitter1";
			this.splitter1.Size = new System.Drawing.Size(3, 309);
			this.splitter1.TabIndex = 4;
			this.splitter1.TabStop = false;
			// 
			// treeView1
			// 
			this.treeView1.Dock = System.Windows.Forms.DockStyle.Left;
			this.treeView1.ImageIndex = -1;
			this.treeView1.Location = new System.Drawing.Point(3, 16);
			this.treeView1.Name = "treeView1";
			this.treeView1.SelectedImageIndex = -1;
			this.treeView1.Size = new System.Drawing.Size(181, 309);
			this.treeView1.TabIndex = 3;
			this.treeView1.AfterSelect += new System.Windows.Forms.TreeViewEventHandler(this.treeView1_AfterSelect);
			// 
			// TreeListViewItemsEditorForm
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(444, 375);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.groupBox1,
																		  this.buttonOk});
			this.MinimumSize = new System.Drawing.Size(384, 384);
			this.Name = "TreeListViewItemsEditorForm";
			this.Text = "TreeListViewItemsEditorForm";
			this.groupBox1.ResumeLayout(false);
			this.ResumeLayout(false);

		}
		#endregion

		private void buttonOk_Click(object sender, System.EventArgs e)
		{
			DialogResult = DialogResult.OK;
			Close();
		}

		private void treeView1_AfterSelect(object sender, System.Windows.Forms.TreeViewEventArgs e)
		{
			propertyGrid1.SelectedObject = (TreeListViewItem) e.Node.Tag;
		}

		private void buttonRemove_Click(object sender, System.EventArgs e)
		{
			if(treeView1.SelectedNode == null) return;
			TreeListViewItem item = (TreeListViewItem) treeView1.SelectedNode.Tag;
			item.Remove();
			treeView1.SelectedNode.Remove();
		}

		private void buttonAdd_Click(object sender, System.EventArgs e)
		{
			try
			{
				TreeListViewItem newitem = new TreeListViewItem("treeListView" + _items.Owner.ItemsCount.ToString());
				TreeNode node = new TreeNode(newitem.Text);
				node.Tag = newitem;
				if(treeView1.SelectedNode != null)
				{
					TreeListViewItem item = (TreeListViewItem) treeView1.SelectedNode.Tag;
					if(item.Items.Add(newitem) > -1) treeView1.SelectedNode.Nodes.Add(node);
				}
				else
					if(_items.Add(newitem) > -1) treeView1.Nodes.Add(node);
				if(node.Index > -1) treeView1.SelectedNode = node;
			}
			catch(Exception ex){MessageBox.Show(ex.Message);}
		}

		private void propertyGrid1_PropertyValueChanged(object s, System.Windows.Forms.PropertyValueChangedEventArgs e)
		{
			if(treeView1.SelectedNode == null) return;
			if(e.ChangedItem.Label == "Text")
				treeView1.SelectedNode.Text = (string) e.ChangedItem.Value;
		}
	}
	/// <summary>
	/// UITypeEditor for the TreeListView.Items property
	/// </summary>
	public class TreeListViewItemsEditor : UITypeEditor
	{
		private IWindowsFormsEditorService edSvc = null;
		private TreeListViewItemsEditorForm editor = null;
		/// <summary>
		/// Constructor
		/// </summary>
		public TreeListViewItemsEditor()
		{
		}
		/// <summary>
		/// Shows a dropdown icon in the property editor
		/// </summary>
		/// <param name="context">The context of the editing control</param>
		/// <returns>Returns <c>UITypeEditorEditStyle.DropDown</c></returns>
		public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext context) 
		{
			return UITypeEditorEditStyle.Modal;
		}

		/// <summary>
		/// Overrides the method used to provide basic behaviour for selecting editor.
		/// Shows our custom control for editing the value.
		/// </summary>
		/// <param name="context">The context of the editing control</param>
		/// <param name="provider">A valid service provider</param>
		/// <param name="value">The current value of the object to edit</param>
		/// <returns>The new value of the object</returns>
		public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value) 
		{
			if (context != null
				&& context.Instance != null
				&& provider != null) 
			{
				edSvc = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService));
				if(edSvc != null)
				{
					editor = new TreeListViewItemsEditorForm((TreeListViewItemCollection) value);
					edSvc.ShowDialog(editor);
					if(editor.DialogResult == DialogResult.OK)
						return(editor.Items);
				}
			}
			return(value);
		}
	}
}