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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<Activity> 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
}
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