79 lines
2.7 KiB
C#
79 lines
2.7 KiB
C#
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using System;
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using System.Windows.Automation.Peers;
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using System.Windows.Automation.Provider;
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using System.Windows.Controls;
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using EGC = ExtendedGrid.Microsoft.Windows.Controls;
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namespace ExtendedGrid.Microsoft.Windows.Controls
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{
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/// <summary>
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/// AutomationPeer for DataGridCell
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/// </summary>
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public sealed class DataGridCellAutomationPeer : FrameworkElementAutomationPeer
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{
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#region Constructors
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/// <summary>
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/// AutomationPeer for DataGridCell.
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/// This automation peer should not be part of the automation tree.
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/// It should act as a wrapper peer for DataGridCellItemAutomationPeer
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/// </summary>
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/// <param name="owner">DataGridCell</param>
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public DataGridCellAutomationPeer(EGC.DataGridCell owner)
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: base(owner)
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{
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if (owner == null)
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{
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throw new ArgumentNullException("owner");
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}
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UpdateEventSource();
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}
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#endregion
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#region AutomationPeer Overrides
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/// <summary>
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/// Gets the control type for the element that is associated with the UI Automation peer.
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/// </summary>
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/// <returns>The control type.</returns>
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protected override AutomationControlType GetAutomationControlTypeCore()
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{
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return AutomationControlType.Custom;
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}
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/// <summary>
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/// Called by GetClassName that gets a human readable name that, in addition to AutomationControlType,
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/// differentiates the control represented by this AutomationPeer.
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/// </summary>
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/// <returns>The string that contains the name.</returns>
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protected override string GetClassNameCore()
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{
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return Owner.GetType().Name;
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}
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#endregion
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#region Private Helpers
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private void UpdateEventSource()
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{
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EGC.DataGridCell cell = (EGC.DataGridCell)Owner;
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EGC.DataGrid dataGrid = cell.DataGridOwner;
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if (dataGrid != null)
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{
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EGC.DataGridAutomationPeer dataGridAutomationPeer = CreatePeerForElement(dataGrid) as EGC.DataGridAutomationPeer;
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if (dataGridAutomationPeer != null)
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{
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EGC.DataGridItemAutomationPeer itemAutomationPeer = dataGridAutomationPeer.GetOrCreateItemPeer(cell.DataContext);
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if (itemAutomationPeer != null)
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{
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EGC.DataGridCellItemAutomationPeer cellItemAutomationPeer = itemAutomationPeer.GetOrCreateCellItemPeer(cell.Column);
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this.EventsSource = cellItemAutomationPeer;
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}
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}
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}
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}
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#endregion
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}
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}
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