WorkflowDesignerMessageFilter.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WF / Common / AuthoringOM / Design / MessageFilters / WorkflowDesignerMessageFilter.cs / 1305376 / WorkflowDesignerMessageFilter.cs
                        
                        
                            namespace System.Workflow.ComponentModel.Design 
{
 	using System;
	using System.Drawing;
	using System.Diagnostics; 
	using System.Windows.Forms;
    using System.ComponentModel.Design; 
 
 	#region Class WorkflowDesignerMessageFilter
	//All Coordinates passed in physical coordinate system 
 	//Some of the functions will have coordinates in screen coordinates ie ShowContextMenu
 	public abstract class WorkflowDesignerMessageFilter : IDisposable, IWorkflowDesignerMessageSink
	{
 		#region Members and Contructor/Destruction 
		private WorkflowView parentView;
 
        protected WorkflowDesignerMessageFilter() 
		{
        } 

		~WorkflowDesignerMessageFilter()
        {
            Dispose(false); 
        }
 
        public void Dispose() 
 		{
            Dispose(true); 
            GC.SuppressFinalize(this);
        }
		#endregion
 
 		#region Protected Properties and Methods
 		protected virtual void Initialize(WorkflowView parentView) 
		{ 
 			this.parentView = parentView;
		} 

		protected virtual void Dispose(bool disposing)
		{
 		} 

		protected virtual bool OnMouseDown(MouseEventArgs eventArgs) 
 		{ 
 			return false;
		} 

 		protected virtual bool OnMouseMove(MouseEventArgs eventArgs)
		{
			return false; 
		}
 
 		protected virtual bool OnMouseUp(MouseEventArgs eventArgs) 
		{
 			return false; 
 		}

		protected virtual bool OnMouseDoubleClick(MouseEventArgs eventArgs)
 		{ 
			return false;
		} 
 
		protected virtual bool OnMouseEnter(MouseEventArgs eventArgs)
 		{ 
			return false;
 		}

 		protected virtual bool OnMouseHover(MouseEventArgs eventArgs) 
		{
 			return false; 
		} 

		protected virtual bool OnMouseLeave() 
		{
 			return false;
		}
 
 		protected virtual bool OnMouseWheel(MouseEventArgs eventArgs)
 		{ 
			return false; 
 		}
 
		protected virtual bool OnMouseCaptureChanged()
		{
			return false;
 		} 

		protected virtual bool OnDragEnter(DragEventArgs eventArgs) 
 		{ 
 			return false;
		} 

 		protected virtual bool OnDragOver(DragEventArgs eventArgs)
		{
			return false; 
		}
 
 		protected virtual bool OnDragLeave() 
		{
 			return false; 
 		}

		protected virtual bool OnDragDrop(DragEventArgs eventArgs)
 		{ 
			return false;
		} 
 
		protected virtual bool OnGiveFeedback(GiveFeedbackEventArgs eventArgs)
 		{ 
			return false;
 		}

 		protected virtual bool OnQueryContinueDrag(QueryContinueDragEventArgs eventArgs) 
		{
 			return false; 
		} 

		protected virtual bool OnKeyDown(KeyEventArgs eventArgs) 
		{
 			return false;
		}
 
 		protected virtual bool OnKeyUp(KeyEventArgs eventArgs)
 		{ 
			return false; 
 		}
 
        protected virtual bool OnScroll(ScrollBar sender, int value)
        {
            return false;
        } 

		protected virtual bool OnShowContextMenu(Point screenMenuPoint) 
		{ 
			return false;
 		} 

		protected virtual bool OnPaint(PaintEventArgs eventArgs, Rectangle viewPort, AmbientTheme ambientTheme)
 		{
 			return false; 
		}
 
 		protected virtual bool OnPaintWorkflowAdornments(PaintEventArgs eventArgs, Rectangle viewPort, AmbientTheme ambientTheme) 
		{
			return false; 
		}

 		protected virtual bool ProcessMessage(Message message)
		{ 
 			return false;
 		} 
 
		protected virtual void OnLayout(LayoutEventArgs eventArgs)
 		{ 
		}

		protected virtual void OnThemeChange()
		{ 
 		}
		 
 		protected WorkflowView ParentView 
 		{
			get 
 			{
				return this.parentView;
			}
		} 

 		protected HitTestInfo MessageHitTestContext 
		{ 
 			get
 			{ 
				HitTestInfo hitInfo = ParentView.MessageHitTestContext;
 				if (hitInfo == null)
					hitInfo = HitTestInfo.Nowhere;
 
				return hitInfo;
			} 
 		} 
		#endregion
 
 		#region Private Methods
 		internal object GetService(Type serviceType)
		{
 			object service = null; 
			if (this.parentView != null)
				service = ((IServiceProvider)this.parentView).GetService(serviceType); 
			return service; 
 		}
 
		internal void SetParentView(WorkflowView parentView)
 		{
 			Initialize(parentView);
		} 
 		#endregion
 
		#region IWorkflowDesignerMessageSink Members 
		bool IWorkflowDesignerMessageSink.OnMouseDown(MouseEventArgs eventArgs)
		{ 
            bool handled = false;
            try
            {
                handled = OnMouseDown(eventArgs); 
            }
            catch 
            { 
            }
 
            return handled;
 		}

		bool IWorkflowDesignerMessageSink.OnMouseMove(MouseEventArgs eventArgs) 
 		{
            bool handled = false; 
            try 
            {
                handled = OnMouseMove(eventArgs); 
            }
            catch
            {
            } 

            return handled; 
 		} 

		bool IWorkflowDesignerMessageSink.OnMouseUp(MouseEventArgs eventArgs) 
 		{
            bool handled = false;
            try
            { 
                handled = OnMouseUp(eventArgs);
            } 
            catch 
            {
            } 

            return handled;
        }
 
		bool IWorkflowDesignerMessageSink.OnMouseDoubleClick(MouseEventArgs eventArgs)
		{ 
            bool handled = false; 
            try
            { 
                handled = OnMouseDoubleClick(eventArgs);
            }
            catch
            { 
            }
 
            return handled; 
		}
 
 		bool IWorkflowDesignerMessageSink.OnMouseEnter(MouseEventArgs eventArgs)
		{
            bool handled = false;
            try 
            {
    			handled = OnMouseEnter(eventArgs); 
            } 
            catch
            { 
            }

            return handled;
        } 

 		bool IWorkflowDesignerMessageSink.OnMouseHover(MouseEventArgs eventArgs) 
 		{ 
            bool handled = false;
            try 
            {
                handled = OnMouseHover(eventArgs);
            }
            catch 
            {
            } 
 
            return handled;
        } 

		bool IWorkflowDesignerMessageSink.OnMouseLeave()
 		{
            bool handled = false; 
            try
            { 
    			handled = OnMouseLeave(); 
            }
            catch 
            {
            }

            return handled; 
        }
 
		bool IWorkflowDesignerMessageSink.OnMouseWheel(MouseEventArgs eventArgs) 
		{
            bool handled = false; 
            try
            {
                handled = OnMouseWheel(eventArgs);
            } 
            catch
            { 
            } 

            return handled; 
        }

		bool IWorkflowDesignerMessageSink.OnMouseCaptureChanged()
 		{ 
            bool handled = false;
            try 
            { 
    			handled = OnMouseCaptureChanged();
            } 
            catch
            {
            }
 
            return handled;
        } 
 
		bool IWorkflowDesignerMessageSink.OnMouseDragBegin(Point initialPoint, MouseEventArgs eventArgs)
 		{ 
 			//This message is not used in MessageFilters
			return false;
 		}
 
		bool IWorkflowDesignerMessageSink.OnMouseDragMove(MouseEventArgs eventArgs)
		{ 
			//This message is not used in MessageFilters 
 			return false;
		} 

 		bool IWorkflowDesignerMessageSink.OnMouseDragEnd()
 		{
			//This message is not used in MessageFilters 
 			return false;
		} 
 
		bool IWorkflowDesignerMessageSink.OnDragEnter(DragEventArgs eventArgs)
		{ 
            bool handled = false;
            try
            {
    			handled = OnDragEnter(eventArgs); 
            }
            catch 
            { 
            }
 
            return handled;
        }

 		bool IWorkflowDesignerMessageSink.OnDragOver(DragEventArgs eventArgs) 
		{
            bool handled = false; 
            try 
            {
                handled = OnDragOver(eventArgs); 
            }
            catch
            {
            } 

            return handled; 
        } 

 		bool IWorkflowDesignerMessageSink.OnDragLeave() 
 		{
            bool handled = false;
            try
            { 
			    handled = OnDragLeave();
            } 
            catch 
            {
            } 

            return handled;
        }
 
 		bool IWorkflowDesignerMessageSink.OnDragDrop(DragEventArgs eventArgs)
		{ 
            bool handled = false; 
            try
            { 
    			handled = OnDragDrop(eventArgs);
            }
            catch
            { 
            }
 
            return handled; 
        }
 
		bool IWorkflowDesignerMessageSink.OnGiveFeedback(GiveFeedbackEventArgs eventArgs)
		{
            bool handled = false;
            try 
            {
    			handled = OnGiveFeedback(eventArgs); 
            } 
            catch
            { 
            }

            return handled;
        } 

 		bool IWorkflowDesignerMessageSink.OnQueryContinueDrag(QueryContinueDragEventArgs eventArgs) 
		{ 
            bool handled = false;
            try 
            {
 			    handled = OnQueryContinueDrag(eventArgs);
            }
            catch 
            {
            } 
 
            return handled;
        } 

 		bool IWorkflowDesignerMessageSink.OnKeyDown(KeyEventArgs eventArgs)
		{
            bool handled = false; 
            try
            { 
    			handled = OnKeyDown(eventArgs); 
            }
            catch 
            {
            }

            return handled; 
        }
 
 		bool IWorkflowDesignerMessageSink.OnKeyUp(KeyEventArgs eventArgs) 
		{
            bool handled = false; 
            try
            {
			    handled = OnKeyUp(eventArgs);
            } 
            catch
            { 
            } 

            return handled; 
        }

        bool IWorkflowDesignerMessageSink.OnScroll(ScrollBar sender, int value)
        { 
            bool handled = false;
            try 
            { 
                handled = OnScroll(sender, value);
            } 
            catch
            {
            }
 
            return handled;
        } 
 
        bool IWorkflowDesignerMessageSink.OnShowContextMenu(Point screenMenuPoint)
		{ 
            bool handled = false;
            try
            {
    			handled = OnShowContextMenu(screenMenuPoint); 
            }
            catch 
            { 
            }
 
            return handled;
        }

 		bool IWorkflowDesignerMessageSink.OnPaint(PaintEventArgs eventArgs, Rectangle viewPort) 
		{
            bool handled = false; 
            try 
            {
    			handled = OnPaint(eventArgs, viewPort, WorkflowTheme.CurrentTheme.AmbientTheme); 
            }
            catch
            {
            } 

            return handled; 
        } 

 		bool IWorkflowDesignerMessageSink.OnPaintWorkflowAdornments(PaintEventArgs eventArgs, Rectangle viewPort) 
 		{
            bool handled = false;
            try
            { 
			    handled = OnPaintWorkflowAdornments(eventArgs, viewPort, WorkflowTheme.CurrentTheme.AmbientTheme);
            } 
            catch 
            {
            } 

            return handled;
        }
 
 		bool IWorkflowDesignerMessageSink.ProcessMessage(Message message)
		{ 
            bool handled = false; 
            try
            { 
			    handled = ProcessMessage(message);
            }
            catch
            { 
            }
 
            return handled; 
        }
 
		void IWorkflowDesignerMessageSink.OnLayout(LayoutEventArgs layoutEventArgs)
 		{
            try
            { 
			    OnLayout(layoutEventArgs);
            } 
            catch 
            {
            } 
 		}

 		void IWorkflowDesignerMessageSink.OnLayoutPosition(Graphics graphics)
		{ 
 			//This message is not used in MessageFilters
		} 
 
		void IWorkflowDesignerMessageSink.OnLayoutSize(Graphics graphics)
		{ 
 			//This message is not used in MessageFilters
		}

 		void IWorkflowDesignerMessageSink.OnThemeChange() 
 		{
            try 
            { 
    			OnThemeChange();
            } 
            catch
            {
            }
		} 

        void IWorkflowDesignerMessageSink.OnBeginResizing(DesignerEdges sizingEdge) 
        { 
        }
 
        void IWorkflowDesignerMessageSink.OnResizing(DesignerEdges sizingEdge, Rectangle bounds)
        {
        }
 
        void IWorkflowDesignerMessageSink.OnEndResizing()
        { 
        } 
        #endregion
 	} 
	#endregion
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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WorkflowDesignerMessageFilter.cs source code in C# .NET

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