Merge pull request #30 from jpbruyere/TreeViewItemAsTemplatedGroup

Tree view and list as templated group, templatedGroup will hold data handling 

1 files changed, 1 insertions, 199 deletions

diff --git a/src/GraphicObjects/ListBox.cs b/src/GraphicObjects/ListBox.cs
index ffbaf3e8..82a4014b 100644
--- a/src/GraphicObjects/ListBox.cs
+++ b/src/GraphicObjects/ListBox.cs
@@ -30,210 +30,12 @@ using System.Threading;
 
 namespace Crow
 {
-	public class ListBox : TemplatedControl
+	public class ListBox : TemplatedGroup
 	{
 		#region CTOR
 		public ListBox () : base() {}
 		#endregion
 
-		#region events
-		public event EventHandler<SelectionChangeEventArgs> SelectedItemChanged;
-		#endregion
-
-		Group _list;
-		GenericStack _gsList;
-		IList data;
-		int _selectedIndex;
-		int itemPerPage = 50;
-		Thread loadingThread = null;
-		volatile bool cancelLoading = false;
-
-		[XmlAttributeAttribute]public IList Data {
-			get {
-				return data;
-			}
-			set {
-				if (value == data)
-					return;
-				
-				cancelLoadingThread ();
-
-				data = value;
-
-				NotifyValueChanged ("Data", data);
-
-				lock (CurrentInterface.UpdateMutex)
-					_list.ClearChildren ();
-				if (_gsList.Orientation == Orientation.Horizontal)
-					_gsList.Width = -1;
-				else
-					_gsList.Height = -1;
-
-				if (data == null)
-					return;
-
-				loadingThread = new Thread (loading);
-				loadingThread.IsBackground = true;
-				loadingThread.Start ();
-				//loadPage(1);
-
-				NotifyValueChanged ("SelectedIndex", _selectedIndex);
-				NotifyValueChanged ("SelectedItem", SelectedItem);
-				SelectedItemChanged.Raise (this, new SelectionChangeEventArgs (SelectedItem));
-			}
-		}
-
-		[XmlAttributeAttribute][DefaultValue(-1)]public int SelectedIndex{
-			get { return _selectedIndex; }
-			set { 
-				if (value == _selectedIndex)
-					return;
-
-				_selectedIndex = value; 
-
-				NotifyValueChanged ("SelectedIndex", _selectedIndex);
-				NotifyValueChanged ("SelectedItem", SelectedItem);
-				SelectedItemChanged.Raise (this, new SelectionChangeEventArgs (SelectedItem));
-			}
-		}
-		[XmlIgnore]public virtual object SelectedItem{
-			get { return data == null ? null : _selectedIndex < 0 ? null : data[_selectedIndex]; }
-		}
-		protected void raiseSelectedItemChanged(){
-			SelectedItemChanged.Raise (this, new SelectionChangeEventArgs (SelectedItem));
-		}
-			
-		#region TemplatedControl override
-		protected override void loadTemplate (GraphicObject template = null)
-		{
-			base.loadTemplate (template);
-			_list = this.child.FindByName ("List") as Group;
-			if (_list == null)
-				throw new Exception ("ListBox Template MUST contain a Goup widget named 'List'.");
-			_gsList = _list as GenericStack;
-		}
-		#endregion
-
-		void loading(){
-			if (ItemTemplates == null)
-				ItemTemplates = new Dictionary<string, ItemTemplate> ();
-			if (!ItemTemplates.ContainsKey ("default"))
-				ItemTemplates ["default"] = Interface.GetItemTemplate (ItemTemplate);
-
-			for (int i = 1; i <= (data.Count / itemPerPage) + 1; i++) {
-				if (cancelLoading)
-					return;
-				loadPage (i);
-			}
-		}
-		void cancelLoadingThread(){
-			if (loadingThread == null)
-				return;
-			if (!loadingThread.IsAlive)
-				return;			
-			cancelLoading = true;
-			loadingThread.Join ();
-			cancelLoading = false;
-		}
-		void loadPage(int pageNum)
-		{
-			#if DEBUG_LOAD
-			Stopwatch loadingTime = new Stopwatch ();
-			loadingTime.Start ();
-			#endif
-
-			Group page = _list.Clone () as Group;
-			
-			page.Name = "page" + pageNum;
-
-			//reset size to fit in the dir of the stacking
-			//because _list total size is forced to approx size
-			if (_gsList.Orientation == Orientation.Horizontal) {
-				page.Width = Measure.Fit;
-				page.BindMember ("Height", "../HeightPolicy");
-			} else {
-				page.Height = Measure.Fit;
-				page.BindMember ("Width", "../WidthPolicy");
-			}
-
-			for (int i = (pageNum - 1) * itemPerPage; i < pageNum * itemPerPage; i++) {
-				if (i >= data.Count)
-					break;
-				if (cancelLoading)
-					return;
-				
-				loadItem (i, page);
-
-				//g.LogicalParent = this;
-			}
-
-			lock (CurrentInterface.LayoutMutex)
-				_list.AddChild (page);
-
-			#if DEBUG_LOAD
-			loadingTime.Stop ();
-			Debug.WriteLine("Listbox {2} Loading: {0} ticks \t, {1} ms",
-			loadingTime.ElapsedTicks,
-			loadingTime.ElapsedMilliseconds, this.ToString());
-			#endif
-		}
-		protected void loadItem(int i, Group page){
-			GraphicObject g = null;
-			ItemTemplate iTemp = null;
-			Type dataType = data [i].GetType ();
-
-			if (ItemTemplates.ContainsKey (dataType.FullName))
-				iTemp = ItemTemplates [dataType.FullName];
-			else
-				iTemp = ItemTemplates ["default"];
-
-			lock (CurrentInterface.LayoutMutex) {
-				g = iTemp.CreateInstance(CurrentInterface);
-				page.AddChild (g);
-				g.DataSource = data [i];
-			}
-
-			registerItemClick (g);
-
-			if (iTemp.Expand != null && g is Expandable) {
-				(g as Expandable).Expand += iTemp.Expand;
-			}			
-		}
-		protected virtual void registerItemClick(GraphicObject g){
-			g.MouseClick += itemClick;
-		}
-		protected void _list_LayoutChanged (object sender, LayoutingEventArgs e)
-		{
-#if DEBUG_LAYOUTING
-			Debug.WriteLine("list_LayoutChanged");
-#endif
-			if (_gsList.Orientation == Orientation.Horizontal) {
-				if (e.LayoutType == LayoutingType.Width)
-					_gsList.Width = approxSize;
-			} else if (e.LayoutType == LayoutingType.Height)
-				_gsList.Height = approxSize;
-		}
-		int approxSize
-		{
-			get {
-				if (data == null)
-					return -1;
-				GenericStack page1 = _list.FindByName ("page1") as GenericStack;
-				if (page1 == null)
-					return -1;
-				
-				return page1.Orientation == Orientation.Horizontal ?
-					data.Count < itemPerPage ?
-						-1:
-					(int)Math.Ceiling ((double)page1.Slot.Width / (double)itemPerPage * (double)(data.Count+1)):
-					data.Count < itemPerPage ?
-						-1:
-					(int)Math.Ceiling ((double)page1.Slot.Height / (double)itemPerPage * (double)(data.Count+1));
-			}
-		}
-		internal virtual void itemClick(object sender, MouseButtonEventArgs e){
-			SelectedIndex = data.IndexOf((sender as GraphicObject).DataSource);
-		}
 	}
 }