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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.Windows.Controls;
using System.Windows.Documents;
using MS.Internal.Documents;
using MS.Internal.Automation;
namespace System.Windows.Automation.Peers
{
///
public class RichTextBoxAutomationPeer : TextAutomationPeer
{
///
public RichTextBoxAutomationPeer(RichTextBox owner): base(owner)
{
_textPattern = new TextAdaptor(this, owner.TextContainer);
}
///
override protected string GetClassNameCore()
{
return "RichTextBox";
}
///
override protected AutomationControlType GetAutomationControlTypeCore()
{
return AutomationControlType.Document;
}
///
override public object GetPattern(PatternInterface patternInterface)
{
object returnValue = null;
RichTextBox owner = (RichTextBox)Owner;
if (patternInterface == PatternInterface.Text)
{
if (_textPattern == null)
_textPattern = new TextAdaptor(this, owner.TextContainer);
return _textPattern;
}
else
{
if (patternInterface == PatternInterface.Scroll)
{
if (owner.ScrollViewer != null)
{
returnValue = owner.ScrollViewer.CreateAutomationPeer();
((AutomationPeer)returnValue).EventsSource = this;
}
}
else
{
returnValue = base.GetPattern(patternInterface);
}
}
return returnValue;
}
/// <summary>
/// <see cref="AutomationPeer.GetChildrenCore"/>
/// </summary>
protected override List<AutomationPeer> GetChildrenCore()
{
RichTextBox owner = (RichTextBox)Owner;
return TextContainerHelper.GetAutomationPeersFromRange(owner.TextContainer.Start, owner.TextContainer.End, null);
}
/// <summary>
/// Gets collection of AutomationPeers for given text range.
/// </summary>
internal override List<AutomationPeer> GetAutomationPeersFromRange(ITextPointer start, ITextPointer end)
{
// Force children connection to automation tree.
GetChildren();
RichTextBox owner = (RichTextBox)Owner;
return TextContainerHelper.GetAutomationPeersFromRange(start, end, owner.TextContainer.Start);
}
private TextAdaptor _textPattern;
}
}
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