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//----------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//----------------------------------------------------------------
namespace System.Activities.Core.Presentation
{
using System.Activities.Presentation;
using System.Activities.Presentation.Hosting;
using System.Windows;
using System.Windows.Automation;
using System.Windows.Media.Animation;
partial class ParallelSeparator
{
public static readonly DependencyProperty AllowedItemTypeProperty =
DependencyProperty.Register("AllowedItemType", typeof(Type), typeof(ParallelSeparator), new UIPropertyMetadata(typeof(object)));
public static readonly DependencyProperty ContextProperty = DependencyProperty.Register(
"Context",
typeof(EditingContext),
typeof(ParallelSeparator));
public ParallelSeparator()
{
this.InitializeComponent();
if (!LocalAppContextSwitches.UseLegacyAccessibilityFeatures)
{
SetValue(AutomationProperties.NameProperty, SR.ParallelSeparatorAutomationName);
}
}
public Type AllowedItemType
{
get { return (Type)GetValue(AllowedItemTypeProperty); }
set { SetValue(AllowedItemTypeProperty, value); }
}
public EditingContext Context
{
get { return (EditingContext)GetValue(ContextProperty); }
set { SetValue(ContextProperty, value); }
}
protected override void OnDragEnter(DragEventArgs e)
{
CheckAnimate(e, "Expand");
this.dropTarget.Visibility = Visibility.Visible;
}
protected override void OnDragLeave(DragEventArgs e)
{
CheckAnimate(e, "Collapse");
this.dropTarget.Visibility = Visibility.Collapsed;
}
protected override void OnDrop(DragEventArgs e)
{
this.dropTarget.Visibility = Visibility.Collapsed;
base.OnDrop(e);
}
void CheckAnimate(DragEventArgs e, string storyboardResourceName)
{
if (!e.Handled)
{
if (!this.Context.Items.GetValue<ReadOnlyState>().IsReadOnly &&
DragDropHelper.AllowDrop(e.Data, this.Context, this.AllowedItemType))
{
BeginStoryboard((Storyboard)this.Resources[storyboardResourceName]);
return;
}
else
{
e.Effects = DragDropEffects.None;
}
e.Handled = true;
}
}
}
}
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