EventHandlersDesigner.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WF / Activities / Designers / EventHandlersDesigner.cs / 1305376 / EventHandlersDesigner.cs
                        

                        
                            namespace System.Workflow.Activities 
{
 	using System;
	using System.Drawing;
    using System.Drawing.Drawing2D; 
    using System.Collections;
	using System.Collections.ObjectModel; 
	using System.ComponentModel; 
 	using System.ComponentModel.Design;
    using System.Workflow.ComponentModel; 
	using System.Workflow.ComponentModel.Design;

 	#region Class EventHandlersDesigner
    [ActivityDesignerTheme(typeof(EventHandlersDesignerTheme))] 
 	internal sealed class EventHandlersDesigner: ActivityPreviewDesigner
	{ 
 		#region Members, Constructor and Destructor 
        protected override void Initialize(Activity activity)
        { 
            base.Initialize(activity);

            HelpText = DR.GetString(DR.DropEventsHere);
            ShowPreview = false; 
		}
		#endregion 
 
		#region Properties and Methods
        public override bool CanExpandCollapse 
        {
            get
            {
                return false; 
            }
        } 
 
 		public override bool CanBeParentedTo(CompositeActivityDesigner parentActivityDesigner)
		{ 
 			if (parentActivityDesigner == null)
 				throw new ArgumentNullException("parentActivity");

			if (parentActivityDesigner.Activity != null) 
 			{
				if(!(parentActivityDesigner.Activity is EventHandlingScopeActivity)) 
					return false; 
			}
 			return base.CanBeParentedTo(parentActivityDesigner); 
		}

 		public override bool CanInsertActivities(HitTestInfo insertLocation, ReadOnlyCollection activitiesToInsert)
        { 
 			foreach (Activity activity in activitiesToInsert)
			{ 
 				if (!(activity is EventDrivenActivity)) 
					return false;
			} 

            return base.CanInsertActivities(insertLocation, activitiesToInsert);
        }
 
		public override object FirstSelectableObject
 		{ 
			get 
 			{
 				if (Expanded && IsVisible) 
				{
 					if (PreviewedDesigner != null || ContainedDesigners.Count > 0)
						return base.FirstSelectableObject;
					else if (ContainedDesigners.Count == 0) 
						return new ConnectorHitTestInfo(this, HitTestLocations.Designer, 0).SelectableObject;
 				} 
 
				return null;
 			} 
 		}
	
 		public override object LastSelectableObject
		{ 
			get
			{ 
 				if (Expanded && IsVisible) 
				{
 					if (PreviewedDesigner != null || ContainedDesigners.Count > 0) 
 						return base.LastSelectableObject;
					else if (ContainedDesigners.Count == 0)
 						return new ConnectorHitTestInfo(this, HitTestLocations.Designer, GetConnectors().GetLength(0) - 1).SelectableObject;
                } 

				return null; 
			} 
		}
 		#endregion 
	}
 	#endregion

    #region EventHandlersDesignerTheme 
    internal sealed class EventHandlersDesignerTheme : ActivityPreviewDesignerTheme
    { 
        public EventHandlersDesignerTheme(WorkflowTheme theme) 
            : base(theme)
        { 
            this.ShowDropShadow = false;
            this.ConnectorStartCap = LineAnchor.None;
            this.ConnectorEndCap = LineAnchor.None;
            this.ForeColor = Color.FromArgb(0xFF, 0x00, 0x00, 0x00); 
            this.BorderColor = Color.FromArgb(0xFF, 0xE0, 0xE0, 0xE0);
            this.BorderStyle = DashStyle.Dash; 
            this.BackColorStart = Color.FromArgb(0x35, 0xFF, 0xFF, 0xB0); 
            this.BackColorEnd = Color.FromArgb(0x35, 0xFF, 0xFF, 0xB0);
 			this.PreviewForeColor = Color.FromArgb(0xFF, 0xF0, 0xF0,0xF0); 
			this.PreviewBorderColor= Color.FromArgb(0xFF, 0x6B, 0x6D, 0x6B);
 			this.PreviewBackColor= Color.FromArgb(0xFF, 0xFF, 0xFF, 0xFF);
        }
    } 
    #endregion
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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