split graphic objects dirRearangeDirs

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diff --git a/src/GraphicObjects/Base/TemplatedGroup.cs b/src/GraphicObjects/Base/TemplatedGroup.cs
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+++ b/src/GraphicObjects/Base/TemplatedGroup.cs
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+//
+// TemplatedGroup.cs
+//
+// Author:
+//       Jean-Philippe Bruyère <jp.bruyere@hotmail.com>
+//
+// Copyright (c) 2013-2017 Jean-Philippe Bruyère
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+using System;
+using System.Xml.Serialization;
+using System.Xml;
+using System.Reflection;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Collections;
+using System.Threading;
+using System.Linq;
+
+namespace Crow
+{
+	public abstract class TemplatedGroup : TemplatedControl
+	{
+		#region CTOR
+		public TemplatedGroup () : base(){}
+		#endregion
+
+		protected Group items;
+		string _itemTemplate, _dataTest;
+
+		#region events
+		public event EventHandler<SelectionChangeEventArgs> SelectedItemChanged;
+		public event EventHandler Loaded;
+		#endregion
+
+		IList data;
+		int _selectedIndex = -1;
+		Color selBackground, selForeground;
+
+		int itemPerPage = 50;
+		CrowThread loadingThread = null;
+		volatile bool cancelLoading = false;
+
+		bool isPaged = false;
+
+		#region Templating
+		//TODO: dont instantiate ItemTemplates if not used
+		//but then i should test if null in msil gen
+		public Dictionary<string, ItemTemplate> ItemTemplates = new Dictionary<string, Crow.ItemTemplate>();
+
+		/// <summary>
+		/// Default item template
+		/// </summary>
+		[XmlAttributeAttribute][DefaultValue("#Crow.Templates.ItemTemplate.goml")]
+		public string ItemTemplate {
+			get { return _itemTemplate; }
+			set {
+				if (value == _itemTemplate)
+					return;
+
+				_itemTemplate = value;
+
+				//TODO:reload list with new template?
+				NotifyValueChanged("ItemTemplate", _itemTemplate);
+			}
+		}
+		protected override void loadTemplate(GraphicObject template = null)
+		{
+			base.loadTemplate (template);
+
+			items = this.child.FindByName ("ItemsContainer") as Group;
+			if (items == null)
+				throw new Exception ("TemplatedGroup template Must contain a Group named 'ItemsContainer'");
+			if (items.Children.Count == 0)
+				NotifyValueChanged ("HasChildren", false);
+			else
+				NotifyValueChanged ("HasChildren", true);
+		}
+		/// <summary>
+		/// Use to define condition on Data item for selecting among ItemTemplates.
+		/// Default value is 'TypeOf' for selecting Template depending on Type of Data.
+		/// Other possible values are properties of Data
+		/// </summary>
+		/// <value>The data property test.</value>
+		[XmlAttributeAttribute][DefaultValue("TypeOf")]
+		public string DataTest {
+			get { return _dataTest; }
+			set {
+				if (value == _dataTest)
+					return;
+
+				_dataTest = value;
+
+				NotifyValueChanged("DataTest", _dataTest);
+			}
+		}
+		#endregion
+
+		public virtual List<GraphicObject> Items{
+			get {
+				return isPaged ? items.Children.SelectMany(x => (x as Group).Children).ToList()
+				: items.Children;
+			}
+		}
+		[XmlAttributeAttribute][DefaultValue(-1)]public int SelectedIndex{
+			get { return _selectedIndex; }
+			set {
+				if (value == _selectedIndex)
+					return;
+
+				if (_selectedIndex >= 0 && Items.Count > _selectedIndex) {
+					Items[_selectedIndex].Foreground = Color.Transparent;
+					Items[_selectedIndex].Background = Color.Transparent;
+				}
+
+				_selectedIndex = value;
+
+				if (_selectedIndex >= 0 && Items.Count > _selectedIndex) {
+					Items[_selectedIndex].Foreground = SelectionForeground;
+					Items[_selectedIndex].Background = SelectionBackground;
+				}
+
+				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]; }
+		}
+		[XmlIgnore]public bool HasItems {
+			get { return Items.Count > 0; }
+		}
+		[XmlAttributeAttribute]public IList Data {
+			get { return data; }
+			set {
+				if (value == data)
+					return;
+
+				cancelLoadingThread ();
+
+				data = value;
+
+				NotifyValueChanged ("Data", data);
+
+				lock (CurrentInterface.LayoutMutex)
+					ClearItems ();
+
+				if (data == null)
+					return;
+
+				loadingThread = new CrowThread (this, loading);
+				loadingThread.Finished += (object sender, EventArgs e) => (sender as TemplatedGroup).Loaded.Raise (sender, e);
+				loadingThread.Start ();
+
+				NotifyValueChanged ("SelectedIndex", _selectedIndex);
+				NotifyValueChanged ("SelectedItem", SelectedItem);
+				SelectedItemChanged.Raise (this, new SelectionChangeEventArgs (SelectedItem));
+				NotifyValueChanged ("HasItems", HasItems);
+			}
+		}
+
+		[XmlAttributeAttribute][DefaultValue("SteelBlue")]
+		public virtual Color SelectionBackground {
+			get { return selBackground; }
+			set {
+				if (value == selBackground)
+					return;
+				selBackground = value;
+				NotifyValueChanged ("SelectionBackground", selBackground);
+				RegisterForRedraw ();
+			}
+		}
+		[XmlAttributeAttribute][DefaultValue("White")]
+		public virtual Color SelectionForeground {
+			get { return selForeground; }
+			set {
+				if (value == selForeground)
+					return;
+				selForeground = value;
+				NotifyValueChanged ("SelectionForeground", selForeground);
+				RegisterForRedraw ();
+			}
+		}
+
+		protected void raiseSelectedItemChanged(){
+			SelectedItemChanged.Raise (this, new SelectionChangeEventArgs (SelectedItem));
+		}
+
+
+		public virtual void AddItem(GraphicObject g){
+			items.AddChild (g);
+			g.LogicalParent = this;
+			NotifyValueChanged ("HasChildren", true);
+		}
+		public virtual void RemoveItem(GraphicObject g)
+		{
+			g.LogicalParent = null;
+			items.RemoveChild (g);
+			if (items.Children.Count == 0)
+				NotifyValueChanged ("HasChildren", false);
+		}
+
+		public virtual void ClearItems()
+		{
+			_selectedIndex = -1;
+			NotifyValueChanged ("SelectedIndex", _selectedIndex);
+			NotifyValueChanged ("SelectedItem", null);
+
+			items.ClearChildren ();
+			NotifyValueChanged ("HasChildren", false);
+		}
+
+
+		#region GraphicObject overrides
+		public override GraphicObject FindByName (string nameToFind)
+		{
+			if (Name == nameToFind)
+				return this;
+
+			foreach (GraphicObject w in Items) {
+				GraphicObject r = w.FindByName (nameToFind);
+				if (r != null)
+					return r;
+			}
+			return null;
+		}
+		public override bool Contains (GraphicObject goToFind)
+		{
+			foreach (GraphicObject w in Items) {
+				if (w == goToFind)
+					return true;
+				if (w.Contains (goToFind))
+					return true;
+			}
+			return base.Contains(goToFind);
+		}
+//		public override void ClearBinding ()
+//		{
+//			if (items != null)
+//				items.ClearBinding ();
+//
+//			base.ClearBinding ();
+//		}
+//		public override void ResolveBindings ()
+//		{
+//			base.ResolveBindings ();
+//			if (items != null)
+//				items.ResolveBindings ();
+//		}
+		#endregion
+
+		#region IXmlSerialisation Overrides
+		public override void ReadXml(System.Xml.XmlReader reader)
+		{
+			using (System.Xml.XmlReader subTree = reader.ReadSubtree ()) {
+				subTree.Read ();
+				string tmp = subTree.ReadOuterXml ();
+
+				//seek for template tag
+				using (XmlReader xr = new XmlTextReader (tmp, XmlNodeType.Element, null)) {
+					xr.Read ();
+					base.ReadXml (xr);
+				}
+				//process content
+				using (XmlReader xr = new XmlTextReader (tmp, XmlNodeType.Element, null)) {
+					xr.Read (); //skip current node
+
+					while (!xr.EOF) {
+						xr.Read (); //read first child
+
+						if (!xr.IsStartElement ())
+							continue;
+
+						if (xr.Name == "Template" || Name == "ItemTemplate"){
+							xr.Skip ();
+							if (!xr.IsStartElement ())
+								continue;
+						}
+
+						Type t = Type.GetType ("Crow." + xr.Name);
+						if (t == null) {
+							Assembly a = Assembly.GetEntryAssembly ();
+							foreach (Type expT in a.GetExportedTypes ()) {
+								if (expT.Name == xr.Name) {
+									t = expT;
+									break;
+								}
+							}
+						}
+						if (t == null)
+							throw new Exception (xr.Name + " type not found");
+
+						GraphicObject go = (GraphicObject)Activator.CreateInstance (t);
+
+						(go as IXmlSerializable).ReadXml (xr);
+
+						AddItem (go);
+
+						xr.Read (); //closing tag
+					}
+
+				}
+			}
+		}
+		public override void WriteXml(System.Xml.XmlWriter writer)
+		{
+			throw new NotImplementedException ();
+		}
+		#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);
+				Thread.Sleep (1);
+			}
+		}
+		void cancelLoadingThread(){
+			if (loadingThread != null)
+				loadingThread.Cancel ();
+		}
+		void loadPage(int pageNum)
+		{
+			#if DEBUG_LOAD
+			Stopwatch loadingTime = new Stopwatch ();
+			loadingTime.Start ();
+			#endif
+
+			Group page;
+			if (typeof(Wrapper).IsAssignableFrom (items.GetType ())) {
+				page = items;
+				itemPerPage = int.MaxValue;
+			} else if (typeof(GenericStack).IsAssignableFrom (items.GetType ())) {
+				GenericStack gs = new GenericStack ();
+				gs.CurrentInterface = items.CurrentInterface;
+				gs.Initialize ();
+				gs.Orientation = (items as GenericStack).Orientation;
+				gs.Width = items.Width;
+				gs.Height = items.Height;
+				gs.VerticalAlignment = items.VerticalAlignment;
+				gs.HorizontalAlignment = items.HorizontalAlignment;
+				page = gs;
+				page.Name = "page" + pageNum;
+				isPaged = true;
+			} else {
+				page = Activator.CreateInstance (items.GetType ()) as Group;
+				page.Name = "page" + pageNum;
+				isPaged = true;
+			}
+
+			for (int i = (pageNum - 1) * itemPerPage; i < pageNum * itemPerPage; i++) {
+				if (i >= data.Count)
+					break;
+				if (cancelLoading)
+					return;
+
+				loadItem (i, page);
+			}
+
+			if (page == items)
+				return;
+			lock (CurrentInterface.LayoutMutex)
+				items.AddChild (page);
+
+			#if DEBUG_LOAD
+			loadingTime.Stop ();
+			Debug.WriteLine("Listbox {2} Loading: {0} ticks \t, {1} ms",
+			loadingTime.ElapsedTicks,
+			loadingTime.ElapsedMilliseconds, this.ToString());
+			#endif
+		}
+		string getItempKey(Type dataType, object o){
+			try {
+				return dataType.GetProperty (_dataTest).GetGetMethod ().Invoke (o, null).ToString();
+			} catch (Exception ex) {
+				return dataType.FullName;
+			}
+		}
+		protected void loadItem(int i, Group page){
+			if (data [i] == null)//TODO:surely a threading sync problem
+				return;
+			GraphicObject g = null;
+			ItemTemplate iTemp = null;
+			Type dataType = data [i].GetType ();
+			string itempKey = dataType.FullName;
+
+			if (_dataTest != "TypeOf")
+				itempKey = getItempKey (dataType, data [i]);
+
+			if (ItemTemplates.ContainsKey (itempKey))
+				iTemp = ItemTemplates [itempKey];
+			else {
+				foreach (string it in ItemTemplates.Keys) {
+					Type t = Type.GetType (it);
+					if (t == null) {
+						Assembly a = Assembly.GetEntryAssembly ();
+						foreach (Type expT in a.GetExportedTypes ()) {
+							if (expT.Name == it) {
+								t = expT;
+								break;
+							}
+						}
+					}
+					if (t == null)
+						continue;
+					if (t.IsAssignableFrom (dataType)) {//TODO:types could be cached
+						iTemp = ItemTemplates [it];
+						break;
+					}
+				}
+				if (iTemp == null)
+					iTemp = ItemTemplates ["default"];
+			}
+
+			lock (CurrentInterface.LayoutMutex) {
+				g = iTemp.CreateInstance(CurrentInterface);
+				page.AddChild (g);
+				//g.LogicalParent = this;
+				registerItemClick (g);
+			}
+
+			if (iTemp.Expand != null && g is Expandable) {
+				(g as Expandable).Expand += iTemp.Expand;
+				(g as Expandable).GetIsExpandable = iTemp.HasSubItems;
+			}
+
+			g.DataSource = data [i];
+		}
+		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 = items.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);
+		}
+	}
+}