Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / System / Windows / Automation / Peers / GridViewCellAutomationPeer.cs / 1305600 / GridViewCellAutomationPeer.cs
using System; using System.Collections; using System.Collections.Generic; using System.Runtime.InteropServices; using System.Security; using System.Text; using System.Windows; using System.Windows.Automation; using System.Windows.Automation.Provider; using System.Windows.Controls; using System.Windows.Controls.Primitives; using System.Windows.Interop; using System.Windows.Media; using MS.Internal; using MS.Win32; namespace System.Windows.Automation.Peers { /// public class GridViewCellAutomationPeer : FrameworkElementAutomationPeer, ITableItemProvider { /// internal GridViewCellAutomationPeer(ContentPresenter owner, ListViewAutomationPeer parent) : base(owner) { Invariant.Assert(parent != null); _listviewAP = parent; } /// internal GridViewCellAutomationPeer(TextBlock owner, ListViewAutomationPeer parent) : base(owner) { Invariant.Assert(parent != null); _listviewAP = parent; } /// protected override string GetClassNameCore() { return Owner.GetType().Name; } /// override protected AutomationControlType GetAutomationControlTypeCore() { if (Owner is TextBlock) { return AutomationControlType.Text; } else { return AutomationControlType.Custom; } } /// override public object GetPattern(PatternInterface patternInterface) { if (patternInterface == PatternInterface.GridItem || patternInterface == PatternInterface.TableItem) { return this; } return base.GetPattern(patternInterface); } /// protected override bool IsControlElementCore() { if (Owner is TextBlock) { return true; } else { Listchildren = GetChildrenAutomationPeer(Owner); return children != null && children.Count >= 1; } } internal int Column { get { return _column; } set { _column = value; } } internal int Row { get { return _row; } set { _row = value; } } #region ITableItem IRawElementProviderSimple[] ITableItemProvider.GetRowHeaderItems() { //If there are no row headers, return an empty array return new IRawElementProviderSimple[0]; } IRawElementProviderSimple[] ITableItemProvider.GetColumnHeaderItems() { ListView listview = _listviewAP.Owner as ListView; if (listview != null && listview.View is GridView) { GridView gridview = listview.View as GridView; if (gridview.HeaderRowPresenter != null && gridview.HeaderRowPresenter.ActualColumnHeaders.Count > Column) { GridViewColumnHeader header = gridview.HeaderRowPresenter.ActualColumnHeaders[Column]; AutomationPeer peer = UIElementAutomationPeer.FromElement(header); if (peer != null) { return new IRawElementProviderSimple[] { ProviderFromPeer(peer) }; } } } return new IRawElementProviderSimple[0]; } #endregion #region IGridItem int IGridItemProvider.Row { get { return Row; } } int IGridItemProvider.Column { get { return Column; } } int IGridItemProvider.RowSpan { get { return 1; } } int IGridItemProvider.ColumnSpan { get { return 1; } } IRawElementProviderSimple IGridItemProvider.ContainingGrid { get { return ProviderFromPeer(_listviewAP); } } #endregion #region Private Methods /// /// Get the children of the parent which has automation peer /// private ListGetChildrenAutomationPeer(Visual parent) { Invariant.Assert(parent != null); List children = null; iterate(parent, (IteratorCallback)delegate(AutomationPeer peer) { if (children == null) children = new List (); children.Add(peer); return (false); }); return children; } private delegate bool IteratorCallback(AutomationPeer peer); // private static bool iterate(Visual parent, IteratorCallback callback) { bool done = false; AutomationPeer peer = null; int count = parent.InternalVisualChildrenCount; for (int i = 0; i < count && !done; i++) { Visual child = parent.InternalGetVisualChild(i); if (child != null && child.CheckFlagsAnd(VisualFlags.IsUIElement) && (peer = CreatePeerForElement((UIElement)child)) != null) { done = callback(peer); } else { done = iterate(child, callback); } } return (done); } #endregion #region Private Fields private ListViewAutomationPeer _listviewAP; private int _column; private int _row; #endregion } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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