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

namespace DevComponents.DotNetBar
{
	/// <summary>
	/// Summary description for BarBaseControlDesigner.
	/// </summary>
	public class BarBaseControlDesigner:System.Windows.Forms.Design.ParentControlDesigner,IDesignerServices
	{
		#region Private Variables
		const string TEMP_NAME="tempDragDropItem";
		private bool m_EnableItemDragDrop=false;
		private bool m_AcceptExternalControls=true;
		private Point m_MouseDownPoint=Point.Empty;
		private BaseItem m_DragItem=null;
		private bool m_DragInProgress=false;
		private IDesignTimeProvider m_DesignTimeProvider=null;
		private int m_InsertPosition;
		private bool m_InsertBefore;
		private bool m_Capture=false;
		private System.Windows.Forms.Control m_DesignerHost=null;
		private Timer m_TimerAdded=null;
		private Timer m_TimerDragDrop=null;
		private bool m_NewControlAdded=false;
		private bool m_SuspendInternalCursor=false;
		private bool m_DragLeave=false;
		private bool m_ControlRemoved=false;
		private DateTime m_JustAdded=DateTime.MinValue;
		private bool m_MouseDownSelectionPerformed=false;
		#endregion

		#region Designer Implementation
		public BarBaseControlDesigner()
		{
			
		}

		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);

			// If our component is removed we need to clean-up
			IComponentChangeService cc=(IComponentChangeService)GetService(typeof(IComponentChangeService));
			if(cc!=null)
			{
				cc.ComponentRemoving+=new ComponentEventHandler(this.OnComponentRemoving);
				cc.ComponentRemoved+=new ComponentEventHandler(this.OnComponentRemoved);
			}

			IDesignerEventService ds=GetService(typeof(IDesignerEventService)) as IDesignerEventService;
			if(ds!=null)
			{
				ds.ActiveDesignerChanged+=new ActiveDesignerEventHandler(this.OnActiveDesignerChanged);
				ds.SelectionChanged+=new EventHandler(DesignerSelectionChanged);
			}

			if(this.Control is IBarDesignerServices)
				((IBarDesignerServices)this.Control).Designer=this;

			if(component is System.Windows.Forms.Control)
			{
				((Control)component).ControlAdded+=new ControlEventHandler(this.ComponentAdded);
				((Control)component).ControlRemoved+=new ControlEventHandler(this.ComponentRemoved);
			}
			//this.EnableDragDrop(false);
		}

		protected override void Dispose(bool disposing)
		{
			// Unhook events
			IComponentChangeService cc=(IComponentChangeService)GetService(typeof(IComponentChangeService));
			if(cc!=null)
			{
				cc.ComponentRemoving-=new ComponentEventHandler(this.OnComponentRemoving);
				cc.ComponentRemoved-=new ComponentEventHandler(this.OnComponentRemoved);
			}

			ISelectionService ss =(ISelectionService)GetService(typeof(ISelectionService));
			if(ss!=null)
				ss.SelectionChanged-=new EventHandler(OnSelectionChanged);
			
			IDesignerEventService ds=GetService(typeof(IDesignerEventService)) as IDesignerEventService;
			if(ds!=null)
			{
				ds.ActiveDesignerChanged-=new ActiveDesignerEventHandler(this.OnActiveDesignerChanged);
				ds.SelectionChanged-=new EventHandler(DesignerSelectionChanged);
			}

			if(this.Component is System.Windows.Forms.Control)
			{
				((Control)this.Component).ControlAdded-=new ControlEventHandler(this.ComponentAdded);
				((Control)this.Component).ControlRemoved-=new ControlEventHandler(this.ComponentRemoved);
			}

			base.Dispose(disposing);
		}

		public override bool CanParent(Control control)
		{
			BaseItem item = GetControlItem(control);
			if (item != null && item != m_DragItem && !m_NewControlAdded)
				return false;
			return base.CanParent(control);
		}

		private void ComponentAdded(object sender, ControlEventArgs e)
		{
			if(!m_NewControlAdded || !m_EnableItemDragDrop || !m_AcceptExternalControls || this.IsDockableWindow)
			{
				if(!m_NewControlAdded)
				{
					if(!OnControlAdded(e))
						return;
				}
				else
					return;
			}

			m_TimerAdded=new Timer();
			m_TimerAdded.Tick+=new EventHandler(this.TimerTick);
			m_TimerAdded.Interval=50;
			m_TimerAdded.Enabled=true;
			m_TimerAdded.Start();
			m_NewControlAdded=false;
		}

		/// <summary>
		/// Called after control has been added to container but not through drag & drop. Control added could also be
		/// internal control by the bar container.
		/// </summary>
		/// <param name="e">Event arguments</param>
		/// <returns>true if acted upon this new control otherwise false.</returns>
		protected virtual bool OnControlAdded(ControlEventArgs e)
		{
			return false;
		}

		private void ComponentRemoved(object sender, ControlEventArgs e)
		{
			IDesignerHost dh=(IDesignerHost)GetService(typeof(IDesignerHost));
			if(dh==null || dh.Loading)
				return;

			if(m_JustAdded!=DateTime.MinValue && DateTime.Now.Subtract(m_JustAdded).Seconds<2)
			{
				m_JustAdded=DateTime.MinValue;
				return;
			}
			m_JustAdded=DateTime.MinValue;
			if(m_DragLeave)
				ControlRemoved(e.Control);
			else if(m_TimerDragDrop!=null)
				m_ControlRemoved=true;
			else
			{
				ISelectionService ss =(ISelectionService)GetService(typeof(ISelectionService));
				if(ss!=null && ss.PrimarySelection==e.Control && this.GetControlItem(e.Control)!=null)
				{
					ControlRemoved(e.Control);
				}
			}
		}

		private void ControlRemoved(Control control)
		{
			if(control!=null)
			{
				BaseItem item=this.GetControlItem(control);
				if(item!=null)
				{
					MouseDragDrop(-1,-1);
					if(item.Parent!=null)
						item.Parent.SubItems.Remove(item);
					this.DestroyComponent(item);
					this.RecalcLayout();
				}
			}
		}

		private void TimerTick(object sender, EventArgs e)
		{
			m_TimerAdded.Stop();
			m_TimerAdded.Enabled=false;
			m_TimerAdded=null;
			this.RecalcLayout();
			ISelectionService sel=(ISelectionService)this.GetService(typeof(ISelectionService));
			if(sel!=null && sel.PrimarySelection is Control && this.Control.Controls.Contains((Control)sel.PrimarySelection))
			{
				IComponentChangeService cc=this.GetService(typeof(IComponentChangeService)) as IComponentChangeService;
				cc.OnComponentChanged(sel.PrimarySelection,null,null,null);
			}
		}

		private void OnSelectionChanged(object sender, EventArgs e) 
		{
			DesignTimeSelectionChanged(sender as ISelectionService);
		}

		private void OnActiveDesignerChanged(object sender, ActiveDesignerEventArgs e)
		{
			this.ActiveDesignerChanged(e);
		}

		/// <summary>
		/// Support for popup menu closing.
		/// </summary>
		/// <param name="e"></param>
		protected virtual void ActiveDesignerChanged(ActiveDesignerEventArgs e)
		{
			if((this.GetItemContainerControl() as IOwner)!=null)
			{
				((IOwner)this.GetItemContainerControl()).OnApplicationDeactivate(); // Closes all popups
			}
		}

		/// <summary>
		/// Support for popup menu closing.
		/// </summary>
		protected virtual void DesignTimeSelectionChanged(ISelectionService ss)
		{
			if(ss==null)
				return;
			if(this.Control==null || this.Control.IsDisposed)
				return;

			if(ss.PrimarySelection!=this.Control)
			{
				BaseItem container=this.GetItemContainer();
				if(container==null)
					return;
				if(ss.PrimarySelection is BaseItem)
				{
					BaseItem item=ss.PrimarySelection as BaseItem;
					if(item.ContainerControl==this.GetItemContainerControl())
						return;
					
					if(this.GetAllAssociatedComponents().Contains(item))
						return;
					
					if((this.GetItemContainerControl() as IOwner)!=null)
						((IOwner)this.GetItemContainerControl()).SetFocusItem(null);
				}
				else
				{
					if((this.GetItemContainerControl() as IOwner)!=null)
					{
						((IOwner)this.GetItemContainerControl()).SetFocusItem(null);
						((IOwner)this.GetItemContainerControl()).OnApplicationDeactivate(); // Closes all popups
					}
				}
			}
			else
			{
				if((this.GetItemContainerControl() as IOwner)!=null)
					((IOwner)this.GetItemContainerControl()).OnApplicationDeactivate(); // Closes all popups
			}
		}

		protected virtual BaseItem GetItemContainer()
		{
			BarBaseControl bar=this.Control as BarBaseControl;
			if(bar!=null)
				return bar.GetBaseItemContainer();
			return null;
		}

		protected virtual System.Windows.Forms.Control GetItemContainerControl()
		{
			return this.Control;
		}

		protected bool m_InternalRemoving=false;
		private void OnComponentRemoving(object sender,ComponentEventArgs e)
		{
			if(e.Component==this.Component)
				ThisComponentRemoving(sender,e);
			else
				OtherComponentRemoving(sender,e);
		}

		private void OnComponentRemoved(object sender,ComponentEventArgs e)
		{
			ComponentRemoved(sender,e);
		}

		protected virtual void ComponentRemoved(object sender, ComponentEventArgs e){}

		/// <summary>
		/// Removes all subitems from container.
		/// </summary>
		protected virtual void ThisComponentRemoving(object sender, ComponentEventArgs e)
		{
			if(!m_InternalRemoving)
			{
				m_InternalRemoving=true;
				try
				{
					// Unhook events
					IComponentChangeService cc=(IComponentChangeService)GetService(typeof(IComponentChangeService));
					if(cc!=null)
						cc.ComponentRemoving-=new ComponentEventHandler(this.OnComponentRemoving);

					BaseItem container=this.GetItemContainer();
					IDesignerHost dh=(IDesignerHost)GetService(typeof(IDesignerHost));

					if(dh==null || container==null)
						return;

					foreach(BaseItem item in container.SubItems)
					{
						// Covers the undo case in designer
						if(item.Parent==container)
						{
							DestroySubItems(item,dh);
							dh.DestroyComponent(item);
						}
					}
				}
				finally
				{
					m_InternalRemoving=false;
				}
			}
		}

		/// <summary>
		/// Triggered when some other component on the form is removed.
		/// </summary>
		protected virtual void OtherComponentRemoving(object sender, ComponentEventArgs e)
		{
			if(e.Component is BaseItem)
			{
				BaseItem item=e.Component as BaseItem;
				if(item.ContainerControl==GetItemContainerControl())
				{
					if(item.Parent!=null && item.Parent.SubItems.Contains(item))
						item.Parent.SubItems.Remove(item);
					if(item!=null)
						DestroySubItems(item);
					this.RecalcLayout();
				}
			}
		}

		protected virtual void DestroySubItems(BaseItem parent, IDesignerHost dh)
		{
			if(parent is ControlContainerItem)
			{
				if(((ControlContainerItem)parent).Control!=null)
				{
					Control c=((ControlContainerItem)parent).Control;
					((ControlContainerItem)parent).Control=null;
					dh.DestroyComponent(c);
				}
			}
			else if(parent is DockContainerItem)
			{
				if(((DockContainerItem)parent).Control!=null)
				{
					Control c=((DockContainerItem)parent).Control;
					((DockContainerItem)parent).Control=null;
					dh.DestroyComponent(c);
				}
			}

			BaseItem[] subitems=new BaseItem[parent.SubItems.Count];
			parent.SubItems.CopyTo(subitems,0);
			foreach(BaseItem item in subitems)
			{
				DestroySubItems(item,dh);
				dh.DestroyComponent(item);
			}
		}

		protected virtual void DestroySubItems(BaseItem parent)
		{
			IDesignerHost dh=GetService(typeof(IDesignerHost)) as IDesignerHost;
			if(dh!=null)
				DestroySubItems(parent,dh);
		}

		/// <summary>
		/// Selection support for items on container.
		/// </summary>
		protected override void WndProc(ref Message m)
		{
			if(m_DesignerHost==null)
				m_DesignerHost=System.Windows.Forms.Control.FromHandle(m.HWnd);
			BaseItem container=this.GetItemContainer();
			System.Windows.Forms.Control ctrl=this.GetItemContainerControl();
			if(container==null || ctrl==null || ctrl.IsDisposed)
			{
				base.WndProc(ref m);
				return;
			}

			switch(m.Msg)
			{
				case NativeFunctions.WM_LBUTTONDOWN:
				case NativeFunctions.WM_RBUTTONDOWN:
				{
					if(OnMouseDown(ref m))
						return;
					break;
				}
				case NativeFunctions.WM_RBUTTONUP:
				case NativeFunctions.WM_LBUTTONUP:
				{
					if(OnMouseUp(ref m))
						return;

					break;
				}
				case NativeFunctions.WM_MOUSEMOVE:
				{
					if(OnMouseMove(ref m))
					{
						m.Result=IntPtr.Zero;
						return;
					}
					break;
				}
				case NativeFunctions.WM_MOUSELEAVE:
				{
					if(OnMouseLeave(ref m))
						return;
					break;
				}
				case NativeFunctions.WM_LBUTTONDBLCLK:
				{
					if(OnMouseDoubleClick(m))
						return;
					break;
				}
			}

			base.WndProc(ref m);
		}

		protected virtual bool OnMouseDown(ref Message m)
		{
			if(this.IsDockableWindow)
				return false;

			System.Windows.Forms.Control ctrl=this.GetItemContainerControl();
			BaseItem container=this.GetItemContainer();

			if(ctrl==null || (ctrl as IOwner)==null || container==null)
				return false;

			if(m.Msg==NativeFunctions.WM_RBUTTONDOWN)
			{
				Point pos=ctrl.PointToClient(System.Windows.Forms.Control.MousePosition);
				MouseEventArgs e=new MouseEventArgs(MouseButtons.Left,0,pos.X,pos.Y,0);
				container.InternalMouseDown(e);
				if(((IOwner)ctrl).GetFocusItem()!=null)
				{
					ISelectionService selection = (ISelectionService) this.GetService(typeof(ISelectionService));
					if(selection!=null)
					{
						ArrayList arr=new ArrayList(1);
						arr.Add(((IOwner)ctrl).GetFocusItem());
#if FRAMEWORK20
						selection.SetSelectedComponents(arr,SelectionTypes.Primary);
#else
                        selection.SetSelectedComponents(arr,SelectionTypes.MouseDown);
#endif
                        OnItemSelected(((IOwner)ctrl).GetFocusItem());
						this.OnContextMenu(System.Windows.Forms.Control.MousePosition.X, System.Windows.Forms.Control.MousePosition.Y);
						return true;
					}
				}
			}
			return false;
		}

		protected virtual bool OnMouseUp(ref Message m)
		{
			bool bProcessed=false;

			if(m_Capture)
			{
				m_Capture=false;
				System.Windows.Forms.Control c=System.Windows.Forms.Control.FromHandle(m.HWnd);
				if(c!=null)
					c.Capture=false;
			}

			System.Windows.Forms.Control ctrl=this.GetItemContainerControl();
			BaseItem container=this.GetItemContainer();

			if(ctrl==null || (ctrl as IOwner)==null || container==null)
				return false;

			Point pos=ctrl.PointToClient(System.Windows.Forms.Control.MousePosition);
			MouseEventArgs e=new MouseEventArgs(MouseButtons.Left,0,pos.X,pos.Y,0);
			container.InternalMouseUp(e);
					
//			if(((IOwner)ctrl).GetFocusItem()==null && !m_MouseDownSelectionPerformed)
//			{
//				ISelectionService selection = (ISelectionService) this.GetService(typeof(ISelectionService));
//				if(selection!=null && selection.PrimarySelection!=this.Control && !(selection.PrimarySelection.GetType() == this.Control.GetType()))
//				{
//					ArrayList arr=new ArrayList(1);
//					arr.Add(this.Control);
//					selection.SetSelectedComponents(arr,SelectionTypes.Click);
//				}
//			}
            if (m_MouseDownSelectionPerformed)
                bProcessed = true;
			m_MouseDownSelectionPerformed=false;

			if(m_DragItem!=null && m_DragItem is ControlContainerItem)
				MouseDragDrop(pos.X,pos.Y);

			return bProcessed;
		}

		protected virtual bool OnMouseMove(ref Message m)
		{
			return false;
		}

		protected override void OnMouseDragBegin(int x, int y)
		{
			Control bar=this.GetItemContainerControl();
			System.Windows.Forms.Control ctrl=this.GetItemContainerControl();
			
			BaseItem container=this.GetItemContainer();
			Point pos=ctrl.PointToClient(new Point(x,y));
			MouseEventArgs e=new MouseEventArgs(MouseButtons.Left,0,pos.X,pos.Y,0);
			
			BaseItem dragItem=null;
			container.InternalMouseDown(e);
			dragItem=((IOwner)ctrl).GetFocusItem();
			
			if(dragItem!=null)
			{
				ISelectionService selection = (ISelectionService) this.GetService(typeof(ISelectionService));
				if(selection!=null)
				{
					ArrayList arr=new ArrayList(1);
					arr.Add(dragItem);
#if FRAMEWORK20
                    selection.SetSelectedComponents(arr, SelectionTypes.Primary);
#else
                    selection.SetSelectedComponents(arr,SelectionTypes.MouseDown);
#endif
                    OnItemSelected(((IOwner)ctrl).GetFocusItem());
				}
			}

			if(bar==null || dragItem==null || this.IsDockableWindow || !m_EnableItemDragDrop || !CanDragItem(dragItem))
			{
				if(dragItem==null)
					base.OnMouseDragBegin(x,y);
				else
					this.Control.Capture = true; // Does same as base implementation
				return;
			}

			bar.Capture = true;
			NativeFunctions.RECT rect = new NativeFunctions.RECT(0,0,0,0);
			NativeFunctions.GetWindowRect(bar.Handle, ref rect);
			Rectangle r=Rectangle.FromLTRB(rect.Left, rect.Top, rect.Right, rect.Bottom);
			Cursor.Clip=r;
			StartItemDrag(dragItem);

			// Does same as base implementation
			this.Control.Capture = true;
		}
		protected virtual bool CanDragItem(BaseItem item)
		{
			return true;
		}
		protected override void OnMouseDragMove(int x, int y)
		{
			if(m_DragInProgress)
			{
				Point p=this.Control.PointToClient(new Point(x,y));
				MouseDragOver(p.X,p.Y);
			}
		}
		protected override void OnMouseDragEnd(bool cancel)
		{
			if(!this.IsDockableWindow)
			{
				this.Control.Capture = false;
				Cursor.Clip = Rectangle.Empty;

				if(m_DragInProgress)
				{
					if(cancel)
						MouseDragDrop(-1,-1);
					else
					{
						Point p=this.Control.PointToClient(Control.MousePosition);
						MouseDragDrop(p.X,p.Y);
					}
					cancel=true;
				}
				else
				{
					System.Windows.Forms.Control ctrl=this.GetItemContainerControl();
					if(ctrl is IOwner && ((IOwner)ctrl).GetFocusItem()!=null)
						cancel=true;
				}
			}

			base.OnMouseDragEnd(cancel);
		}

		protected virtual bool OnMouseLeave(ref Message m)
		{
			return false;
		}

		protected virtual bool OnMouseDoubleClick(Message m)
		{
			bool processed=false;

			ISelectionService selection = (ISelectionService) this.GetService(typeof(ISelectionService));
			if(selection!=null && selection.PrimarySelection is ButtonItem && ((ButtonItem)selection.PrimarySelection).ContainerControl==this.GetItemContainerControl())
			{
				IDesignerHost host=(IDesignerHost) this.GetService(typeof(IDesignerHost));
				if(host!=null)
				{
					IDesigner designer=host.GetDesigner(selection.PrimarySelection as IComponent);
					if(designer!=null)
					{
						designer.DoDefaultAction();
						processed=true;
					}
				}
			}

			return processed;
		}

		protected virtual void OnItemSelected(BaseItem item)
		{

		}

		protected virtual void RecalcLayout()
		{
			BarBaseControl bar=this.GetItemContainerControl() as BarBaseControl;
			if(bar!=null)
				bar.RecalcLayout();
		}

		/// <summary>
		/// Indicates to the designed control that it has been selected or one of the elements managed by the control is selected in designer.
		/// </summary>
		/// <param name="selected">true if selected otherwise false</param>
		protected virtual void SetComponentSelected(bool selected)
		{
			
		}

		public override System.Collections.ICollection AssociatedComponents
		{
			get
			{
				ArrayList c=new ArrayList(base.AssociatedComponents);
				BaseItem container=this.GetItemContainer();
				if(container!=null)
				{
					foreach(BaseItem item in container.SubItems)
					{
						if(item.DesignMode)
							c.Add(item);
					}
				}
				return c;
			}
		}

		private ArrayList GetAllAssociatedComponents()
		{
			ArrayList c=new ArrayList(base.AssociatedComponents);
			BaseItem container=this.GetItemContainer();
			if(container!=null)
			{
				AddSubItems(container,c);
			}
			return c;
		}

		private void AddSubItems(BaseItem parent, ArrayList list)
		{
			foreach(BaseItem item in parent.SubItems)
			{
				if(item.DesignMode)
					list.Add(item);
				AddSubItems(item,list);
			}
		}
		#endregion

		#region Design-Time Item Creation
		protected virtual void CreateButton(object sender, EventArgs e)
		{
			OnSubItemsChanging();
			CreateButton(this.GetItemContainer());
			OnSubItemsChanged();
		}

		protected virtual void CreateButton(BaseItem parent)
		{
			if(parent==null)
				return;

			IDesignerHost dh=(IDesignerHost)GetService(typeof(IDesignerHost));
			if(dh!=null)
			{
				ButtonItem item=dh.CreateComponent(typeof(ButtonItem)) as ButtonItem;
				if(item==null)
					return;
				
				TypeDescriptor.GetProperties(item)["Text"].SetValue(item,item.Name);

				IComponentChangeService cc=this.GetService(typeof(IComponentChangeService)) as IComponentChangeService;
				if(parent!=this.GetItemContainer() && cc!=null)
					cc.OnComponentChanging(parent,TypeDescriptor.GetProperties(typeof(BaseItem))["SubItems"]);

				parent.SubItems.Add(item);
				this.RecalcLayout();

				if(parent!=this.GetItemContainer() && cc!=null)
					cc.OnComponentChanged(parent,TypeDescriptor.GetProperties(typeof(BaseItem))["SubItems"],null,null);
			}
		}

		protected virtual void CreateTextBox(object sender, EventArgs e)
		{
			OnSubItemsChanging();
			CreateTextBox(this.GetItemContainer());
			OnSubItemsChanged();
		}

		protected virtual void CreateTextBox(BaseItem parent)
		{
			if(parent==null)
				return;

			IDesignerHost dh=(IDesignerHost)GetService(typeof(IDesignerHost));
			if(dh!=null)
			{
				TextBoxItem item=dh.CreateComponent(typeof(TextBoxItem)) as TextBoxItem;
				if(item==null)
					return;

				IComponentChangeService cc=this.GetService(typeof(IComponentChangeService)) as IComponentChangeService;
				if(parent!=this.GetItemContainer() && cc!=null)
					cc.OnComponentChanging(parent,TypeDescriptor.GetProperties(typeof(BaseItem))["SubItems"]);

				parent.SubItems.Add(item);
				this.RecalcLayout();

				if(parent!=this.GetItemContainer() && cc!=null)
					cc.OnComponentChanged(parent,TypeDescriptor.GetProperties(typeof(BaseItem))["SubItems"],null,null);
			}
		}


		protected virtual void CreateComboBox(object sender, EventArgs e)
		{
			OnSubItemsChanging();
			CreateComboBox(this.GetItemContainer());
			OnSubItemsChanged();
		}

		protected virtual void CreateComboBox(BaseItem parent)
		{
			if(parent==null)
				return;

			IDesignerHost dh=(IDesignerHost)GetService(typeof(IDesignerHost));
			if(dh!=null)
			{
				ComboBoxItem item=dh.CreateComponent(typeof(ComboBoxItem)) as ComboBoxItem;
				if(item==null)
					return;

				IComponentChangeService cc=this.GetService(typeof(IComponentChangeService)) as IComponentChangeService;
				if(parent!=this.GetItemContainer() && cc!=null)
					cc.OnComponentChanging(parent,TypeDescriptor.GetProperties(typeof(BaseItem))["SubItems"]);

				parent.SubItems.Add(item);
				this.RecalcLayout();

				if(parent!=this.GetItemContainer() && cc!=null)
					cc.OnComponentChanged(parent,TypeDescriptor.GetProperties(typeof(BaseItem))["SubItems"],null,null);
			}
		}

		protected virtual void CreateLabel(object sender, EventArgs e)
		{
			OnSubItemsChanging();
			CreateLabel(this.GetItemContainer());
			OnSubItemsChanged();
		}

		protected virtual void CreateLabel(BaseItem parent)
		{
			if(parent==null)
				return;

			IDesignerHost dh=(IDesignerHost)GetService(typeof(IDesignerHost));
			if(dh!=null)
			{
				LabelItem item=dh.CreateComponent(typeof(LabelItem)) as LabelItem;
				if(item==null)
					return;

				TypeDescriptor.GetProperties(item)["Text"].SetValue(item,item.Name);

				IComponentChangeService cc=this.GetService(typeof(IComponentChangeService)) as IComponentChangeService;
				if(parent!=this.GetItemContainer() && cc!=null)
					cc.OnComponentChanging(parent,TypeDescriptor.GetProperties(typeof(BaseItem))["SubItems"]);

				parent.SubItems.Add(item);
				this.RecalcLayout();

				if(parent!=this.GetItemContainer() && cc!=null)
					cc.OnComponentChanged(parent,TypeDescriptor.GetProperties(typeof(BaseItem))["SubItems"],null,null);
			}
		}

		protected virtual void CreateDocument(object sender, EventArgs e)
		{
			IDesignerHost dh=(IDesignerHost)GetService(typeof(IDesignerHost));
			if(dh==null)
				return;
			DockContainerItem item=dh.CreateComponent(typeof(DockContainerItem)) as DockContainerItem;
			item.Text=item.Name;
			OnSubItemsChanging();
			this.GetItemContainer().SubItems.Add(item);
			PanelDockContainer panel=dh.CreateComponent(typeof(PanelDockContainer)) as PanelDockContainer;
			this.Control.Controls.Add(panel);
			panel.ColorSchemeStyle=this.Style;
			panel.ApplyLabelStyle();
			item.Control=panel;
			OnSubItemsChanged();


			this.RecalcLayout();
		}

		protected virtual void OnSubItemsChanging() {}
		protected virtual void OnSubItemsChanged() {}

		protected virtual eDotNetBarStyle Style
		{
			get {return eDotNetBarStyle.Office2003;}
		}
		#endregion

		#region Drag & Drop support
		private void TimerTickDragDrop(object sender, EventArgs e)
		{
			Point p=this.Control.PointToClient(System.Windows.Forms.Control.MousePosition);
			if(this.Control.Bounds.Contains(p))
				m_DragLeave=false;
			else
				m_DragLeave=true;

			if(System.Windows.Forms.Control.MouseButtons!=MouseButtons.Left)
			{
				m_TimerDragDrop.Enabled=false;
				m_TimerDragDrop.Stop();
				m_TimerDragDrop.Tick-=new EventHandler(TimerTickDragDrop);
				m_TimerDragDrop.Dispose();
				m_TimerDragDrop=null;
				if(m_ControlRemoved)
				{
					m_ControlRemoved=false;
					ISelectionService sel=this.GetService(typeof(ISelectionService)) as ISelectionService;
					if(sel!=null && sel.PrimarySelection is System.Windows.Forms.Control)
						ControlRemoved((System.Windows.Forms.Control)sel.PrimarySelection);
				}
			}
		}

		protected override void OnDragLeave(EventArgs e)
		{
			if(m_DragInProgress)
			{
				MouseDragDrop(-1,-1);
			}
			base.OnDragLeave (e);
		}

		protected override void OnDragOver(DragEventArgs de)
		{
			if(m_DragInProgress)
			{
				Point p=this.Control.PointToClient(new Point(de.X,de.Y));
				MouseDragOver(p.X,p.Y);
				de.Effect=DragDropEffects.Move;
				return;
			}

			if(m_EnableItemDragDrop && m_AcceptExternalControls && !this.IsDockableWindow)
			{
				ISelectionService sel=(ISelectionService)this.GetService(typeof(ISelectionService));
				if(sel!=null && sel.PrimarySelection!=this.Component)
				{
					if(sel.PrimarySelection is Control && this.Control.Controls.Contains((Control)sel.PrimarySelection))
					{			
						BaseItem item=GetControlItem(sel.PrimarySelection as Control);
						if(item!=null)
						{
							m_MouseDownPoint=this.Control.PointToClient(new Point(de.X,de.Y));
							m_SuspendInternalCursor=true;
							StartItemDrag(item);
							if(m_TimerDragDrop==null)
							{
								m_TimerDragDrop=new Timer();
								m_TimerDragDrop.Tick+=new EventHandler(this.TimerTickDragDrop);
								m_TimerDragDrop.Interval=100;
								m_TimerDragDrop.Enabled=true;
								m_TimerDragDrop.Start();
							}
						}
						return;
					}
					else if(sel.SelectionCount>1)
					{
						de.Effect=DragDropEffects.None;
						return;
					}
					else if(sel.PrimarySelection is Control && ((Control)sel.PrimarySelection).Parent!=null)
					{
						// New control being added to the container
						BaseItem dragItem=null;
						if(this.IsDockableWindow)
						{
							DockContainerItem dc=new DockContainerItem();
							dc.Name=TEMP_NAME;
							//dc.Control=sel.PrimarySelection as System.Windows.Forms.Control;
							dragItem=dc;
						}
						else
						{
							ControlContainerItem cc=new ControlContainerItem();
							cc.Name=TEMP_NAME;
							//cc.Control=sel.PrimarySelection as System.Windows.Forms.Control;
							dragItem=cc;
						}
						m_MouseDownPoint=this.Control.PointToClient(new Point(de.X,de.Y));
						m_SuspendInternalCursor=true;
						StartItemDrag(dragItem);
					}
				}
			}
			base.OnDragOver (de);
		}

		protected override void OnDragDrop(DragEventArgs de)
		{
			if(m_EnableItemDragDrop && m_AcceptExternalControls && !this.IsDockableWindow)
			{
				ISelectionService sel=(ISelectionService)this.GetService(typeof(ISelectionService));
				if(sel!=null && sel.PrimarySelection is Control && this.Control.Controls.Contains((Control)sel.PrimarySelection))
				{
					de.Effect=DragDropEffects.Move;
					Point p=this.Control.PointToClient(new Point(de.X,de.Y));
					MouseDragDrop(p.X,p.Y);
				}
				else
				{
					if(sel.SelectionCount>1)
					{
						de.Effect=DragDropEffects.None;
						return;
					}
					else
					{
						if(m_DragItem!=null && m_DragItem.Name==TEMP_NAME && (m_DragItem is ControlContainerItem || m_DragItem is DockContainerItem))
						{
							m_JustAdded=DateTime.Now;
							BaseItem dragItem=null;
							if(m_DragItem is ControlContainerItem)
							{
								ControlContainerItem cc=m_DragItem as ControlContainerItem;
								cc.Control=null;
								cc=this.CreateComponent(typeof(ControlContainerItem)) as ControlContainerItem;
								TypeDescriptor.GetProperties(cc)["Control"].SetValue(cc,sel.PrimarySelection as System.Windows.Forms.Control);
								dragItem=cc;
							}
							else if(m_DragItem is DockContainerItem)
							{
								DockContainerItem dc=m_DragItem as DockContainerItem;
								dc.Control=null;
								dc=this.CreateComponent(typeof(DockContainerItem)) as DockContainerItem;
								TypeDescriptor.GetProperties(dc)["Control"].SetValue(dc,sel.PrimarySelection as System.Windows.Forms.Control);
								dragItem=dc;
							}
							m_DragItem=dragItem;
							Point p=this.Control.PointToClient(new Point(de.X,de.Y));
							MouseDragDrop(p.X,p.Y);
						}
						m_NewControlAdded=true;
					}
				}
			}
		
			base.OnDragDrop(de);
		}

		protected virtual BaseItem GetControlItem(System.Windows.Forms.Control control)
		{
			BaseItem parent=this.GetItemContainer();
			if(parent==null)
				return null;
			return GetControlItem(control,parent);
		}

		private BaseItem GetControlItem(System.Windows.Forms.Control control, BaseItem parent)
		{
			if(parent is ControlContainerItem && ((ControlContainerItem)parent).Control==control)
				return parent;
			else if(parent is DockContainerItem && ((DockContainerItem)parent).Control==control)
				return parent;

			foreach(BaseItem item in parent.SubItems)
			{
				BaseItem i2=GetControlItem(control,item);
				if(i2!=null)
					return i2;
			}
			return null;
		}

		protected virtual bool DragInProgress
		{
			get {return m_DragInProgress;}
			set {m_DragInProgress=value;}
		}

		protected void StartItemDrag(BaseItem item)
		{
			if(item==null)
				return;

			if(m_DragItem==null)
			{
				m_DragItem=item;
				if(!m_SuspendInternalCursor)
					System.Windows.Forms.Cursor.Current=System.Windows.Forms.Cursors.Hand;
				m_DragInProgress=true;
			}
		}

		private void MouseDragOver(int x, int y)
		{
			if(!m_DragInProgress)
				return;
			BaseItem dragItem=m_DragItem;
			BaseItem container=this.GetItemContainer();
			
			if(m_DesignTimeProvider!=null)
			{
				m_DesignTimeProvider.DrawReversibleMarker(m_InsertPosition,m_InsertBefore);
				m_DesignTimeProvider=null;
			}

			Control control=this.GetItemContainerControl();
			Point pScreen=control.PointToScreen(new Point(x,y));

			InsertPosition pos=((IDesignTimeProvider)container).GetInsertPosition(pScreen, dragItem);
				
			if(pos!=null)
			{
				if(pos.TargetProvider==null)
				{
					// Cursor is over drag item
					if(!m_SuspendInternalCursor)
						System.Windows.Forms.Cursor.Current=System.Windows.Forms.Cursors.No;
				}
				else
				{
					pos.TargetProvider.DrawReversibleMarker(pos.Position,pos.Before);
					m_InsertPosition=pos.Position;
					m_InsertBefore=pos.Before;
					m_DesignTimeProvider=pos.TargetProvider;
					if(!m_SuspendInternalCursor)
						System.Windows.Forms.Cursor.Current=System.Windows.Forms.Cursors.Hand;
				}
			}
			else
			{
				if(!m_SuspendInternalCursor)
					System.Windows.Forms.Cursor.Current=System.Windows.Forms.Cursors.No;
			}
		}

		private void MouseDragDrop(int x, int y)
		{
			if(!m_DragInProgress)
				return;
			BaseItem dragItem=m_DragItem;
			BaseItem container=this.GetItemContainer();
			bool changed=false;

			if(m_DesignTimeProvider!=null)
			{
				if(x==-1 && y==-1)
				{
					// Cancel state
					m_DesignTimeProvider.DrawReversibleMarker(m_InsertPosition, m_InsertBefore);
				}
				else
				{
					m_DesignTimeProvider.DrawReversibleMarker(m_InsertPosition, m_InsertBefore);
					if(dragItem!=null)
					{
						BaseItem objParent=dragItem.Parent;
						if(objParent!=null)
						{
							if(objParent==(BaseItem)m_DesignTimeProvider && m_InsertPosition>0)
							{
								if(objParent.SubItems.IndexOf(dragItem)<m_InsertPosition)
									m_InsertPosition--;
							}
							objParent.SubItems.Remove(dragItem);
						}
						m_DesignTimeProvider.InsertItemAt(dragItem,m_InsertPosition,m_InsertBefore);
						m_DesignTimeProvider=null;
						changed=true;
						if(dragItem.Parent!=null && dragItem.Parent!=this.GetItemContainer())
						{
							IComponentChangeService cc=(IComponentChangeService)GetService(typeof(IComponentChangeService));
							if(cc!=null)
								cc.OnComponentChanged(dragItem.Parent,TypeDescriptor.GetProperties(typeof(BaseItem))["SubItems"],null,null);
						}
					}
				}
			}
			else if(x!=-1 && y!=-1 && dragItem is ControlContainerItem)
			{
				BaseItem parent=container;
                parent.SubItems.Add(dragItem);
				IComponentChangeService cc=(IComponentChangeService)GetService(typeof(IComponentChangeService));
				if(cc!=null)
					cc.OnComponentChanged(dragItem.Parent,TypeDescriptor.GetProperties(typeof(BaseItem))["SubItems"],null,null);
				changed=true;
			}

			m_DesignTimeProvider=null;
			m_DragInProgress=false;
			if(!m_SuspendInternalCursor)
				System.Windows.Forms.Cursor.Current=System.Windows.Forms.Cursors.Default;
			if(dragItem!=null)
				dragItem._IgnoreClick=true;
			container.InternalMouseUp(new MouseEventArgs(MouseButtons.Left,0,x,y,0));
			if(dragItem!=null)
				dragItem._IgnoreClick=false;

			m_DragItem=null;
			this.RecalcLayout();

			if(changed)
			{
				IComponentChangeService cc=(IComponentChangeService)GetService(typeof(IComponentChangeService));
				if(cc!=null)
				{
					cc.OnComponentChanged(this.Control,null,null,null);
				}
			}
		}

		/// <summary>
		/// Gets or sets whether drag and drop of BaseItems is enabled. Default is false.
		/// </summary>
		protected virtual bool EnableItemDragDrop
		{
			get {return m_EnableItemDragDrop;}
			set {m_EnableItemDragDrop=value;}
		}

		/// <summary>
		/// Gets or sets whether dropping of external control into Bar is enabled. Default is false. 
		/// </summary>
		protected virtual bool AcceptExternalControls
		{
			get {return m_AcceptExternalControls;}
			set {m_AcceptExternalControls=value;}
		}

		public void StartExternalDrag(BaseItem item)
		{
			if(!m_DragInProgress && m_DesignerHost!=null)
			{
				m_SuspendInternalCursor=false;
				m_MouseDownPoint=this.Control.PointToClient(System.Windows.Forms.Control.MousePosition);
				this.StartItemDrag(item);
				m_DesignerHost.Capture=true;
			}
		}

		protected virtual bool IsDockableWindow
		{
			get {return false;}
		}

		protected virtual void SelectComponent(IComponent comp, SelectionTypes selectionType)
		{
			ISelectionService selection = (ISelectionService) this.GetService(typeof(ISelectionService));
			if(selection!=null)
			{
				ArrayList arr=new ArrayList(1);
				arr.Add(comp);
				selection.SetSelectedComponents(arr,selectionType);
			}
		}

		protected virtual bool MouseDownSelectionPerformed
		{
			get {return m_MouseDownSelectionPerformed;}
			set {m_MouseDownSelectionPerformed=value;}
		}
		#endregion

		#region IDesignerServices Implementation
		public object CreateComponent(System.Type componentClass)
		{
			IDesignerHost dh=(IDesignerHost)GetService(typeof(IDesignerHost));
			if(dh==null)
				return null;
			return dh.CreateComponent(componentClass);
		}

		public void DestroyComponent(IComponent c)
		{
			IDesignerHost dh=(IDesignerHost)GetService(typeof(IDesignerHost));
			if(dh==null)
				return;
			dh.DestroyComponent(c);
		}

		object IDesignerServices.GetService(Type serviceType)
		{
			return this.GetService(serviceType);
		}
		#endregion

		private void DesignerSelectionChanged(object sender, EventArgs e)
		{
			ISelectionService sel=this.GetService(typeof(ISelectionService)) as ISelectionService;
			if(sel==null)
			{
				SetComponentSelected(false);
				return;
			}
			bool selected=false;
			if(sel.PrimarySelection==this.Control || sel.PrimarySelection==this.GetItemContainerControl())
				selected=true;
			else if(sel.PrimarySelection is BaseItem && ((BaseItem)sel.PrimarySelection).ContainerControl==this.GetItemContainerControl())
				selected=true;

			SetComponentSelected(selected);
		}
	}

	#region IDesignerServices
	/// <summary>
	/// Classes used for internal support of design-time features.
	/// </summary>
	public interface IDesignerServices
	{
		/// <summary>
		/// Creates new component.
		/// </summary>
		/// <param name="componentClass">Component type to create</param>
		/// <returns>New instance of component</returns>
		object CreateComponent(System.Type componentClass);
		/// <summary>
		/// Destroys component
		/// </summary>
		/// <param name="c">Component to destroy</param>
		void DestroyComponent(IComponent c);

		/// <summary>
		/// Gets specified designer service.
		/// </summary>
		/// <param name="serviceType">Type of the service to get</param>
		/// <returns>Returns reference to the service.</returns>
		object GetService(Type serviceType);
	}

	/// <summary>
	/// Interface implemented by target Bar interested in access to designer.
	/// </summary>
	public interface IBarDesignerServices
	{
		/// <summary>
		/// Gets or sets the BarBaseControlDesigner instance.
		/// </summary>
		BarBaseControlDesigner Designer {get;set;}
	}
	#endregion
}