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//---------------------------------------------------------------------------
//
// Copyright (C) Microsoft Corporation. All rights reserved.
//
// File: TableCellAutomationPeer.cs
//
// Description: Automation peer for TableCell
//
//---------------------------------------------------------------------------
using System.Windows.Automation.Provider; // IRawElementProviderSimple
using System.Windows.Documents;
namespace System.Windows.Automation.Peers
{
///
public class TableCellAutomationPeer : TextElementAutomationPeer, IGridItemProvider
{
/// <summary>
/// Constructor.
/// </summary>
/// <param name="owner">Owner of the AutomationPeer.</param>
public TableCellAutomationPeer(TableCell owner)
: base(owner)
{ }
/// <summary>
/// <see cref="AutomationPeer.GetPattern"/>
/// </summary>
public override object GetPattern(PatternInterface patternInterface)
{
if (patternInterface == PatternInterface.GridItem)
{
return this;
}
else
{
return base.GetPattern(patternInterface);
}
}
/// <summary>
/// <see cref="AutomationPeer.GetAutomationControlTypeCore"/>
/// </summary>
protected override AutomationControlType GetAutomationControlTypeCore()
{
return AutomationControlType.Custom;
}
/// <summary>
/// <see cref="AutomationPeer.GetLocalizedControlTypeCore"/>
/// </summary>
protected override string GetLocalizedControlTypeCore()
{
return "cell";
}
/// <summary>
/// <see cref="AutomationPeer.GetClassNameCore"/>
/// </summary>
protected override string GetClassNameCore()
{
return "TableCell";
}
/// <summary>
/// <see cref="AutomationPeer.IsControlElementCore"/>
/// </summary>
protected override bool IsControlElementCore()
{
// We only want this peer to show up in the Control view if it is visible
// For compat we allow falling back to legacy behavior (returning true always)
// based on AppContext flags, IncludeInvisibleElementsInControlView evaluates them.
return IncludeInvisibleElementsInControlView || IsTextViewVisible == true;
}
/// <summary>
/// Raises property changed events in response to column span change.
/// </summary>
internal void OnColumnSpanChanged(int oldValue, int newValue)
{
RaisePropertyChangedEvent(GridItemPatternIdentifiers.ColumnSpanProperty, oldValue, newValue);
}
/// <summary>
/// Raises property changed events in response to row span change.
/// </summary>
internal void OnRowSpanChanged(int oldValue, int newValue)
{
RaisePropertyChangedEvent(GridItemPatternIdentifiers.RowSpanProperty, oldValue, newValue);
}
//-------------------------------------------------------------------
//
// IGridProvider Members
//
//-------------------------------------------------------------------
#region IGridItemProvider Members
/// <summary>
/// Returns the current row that the item is located at.
/// </summary>
int IGridItemProvider.Row
{
get
{
return ((TableCell)Owner).RowIndex;
}
}
/// <summary>
/// Returns the current column that the item is located at.
/// </summary>
int IGridItemProvider.Column
{
get
{
return ((TableCell)Owner).ColumnIndex;
}
}
/// <summary>
/// Return the current number of rows that the item spans.
/// </summary>
int IGridItemProvider.RowSpan
{
get
{
return ((TableCell)Owner).RowSpan;
}
}
/// <summary>
/// Return the current number of columns that the item spans.
/// </summary>
int IGridItemProvider.ColumnSpan
{
get
{
return ((TableCell)Owner).ColumnSpan;
}
}
/// <summary>
/// Returns the container that maintains the grid layout for the item.
/// </summary>
IRawElementProviderSimple IGridItemProvider.ContainingGrid
{
get
{
if ((TableCell)Owner != null)
{
return ProviderFromPeer(CreatePeerForElement(((TableCell)Owner).Table));
}
else
{
return null;
}
}
}
#endregion IGridItemProvider Members
}
}
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