Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / System / Windows / Automation / Peers / GridViewItemAutomationPeer.cs / 1305600 / GridViewItemAutomationPeer.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 GridViewItemAutomationPeer : ListBoxItemAutomationPeer { /// public GridViewItemAutomationPeer(object owner, ListViewAutomationPeer listviewAP) : base(owner, listviewAP) { Invariant.Assert(owner != null); Invariant.Assert(listviewAP != null); _item = owner; _listviewAP = listviewAP; } /// override protected string GetClassNameCore() { return "ListViewItem"; } /// override protected AutomationControlType GetAutomationControlTypeCore() { return AutomationControlType.DataItem; } /// protected override ListGetChildrenCore() { ListView listview = _listviewAP.Owner as ListView; Invariant.Assert(listview != null); ListViewItem lvi = listview.ItemContainerGenerator.ContainerFromItem(_item) as ListViewItem; if (lvi != null) { GridViewRowPresenter rowPresenter = GridViewAutomationPeer.FindVisualByType(lvi, typeof(GridViewRowPresenter)) as GridViewRowPresenter; if (rowPresenter != null) { Hashtable oldChildren = _dataChildren; //cache the old ones for possible reuse _dataChildren = new Hashtable(rowPresenter.ActualCells.Count); List list = new List (); int row = listview.Items.IndexOf(_item); int column = 0; foreach (UIElement ele in rowPresenter.ActualCells) { GridViewCellAutomationPeer peer = (oldChildren == null ? null : (GridViewCellAutomationPeer)oldChildren[ele]); if (peer == null) { if (ele is ContentPresenter) { peer = new GridViewCellAutomationPeer((ContentPresenter)ele, _listviewAP); } else if (ele is TextBlock) { peer = new GridViewCellAutomationPeer((TextBlock)ele, _listviewAP); } else { Invariant.Assert(false, "Children of GridViewRowPresenter should be ContentPresenter or TextBlock"); } } //protection from indistinguishable UIElement - for example, 2 UIElement wiht same value if (_dataChildren[ele] == null) { //Set Cell's row and column peer.Column = column; peer.Row = row; list.Add(peer); _dataChildren.Add(ele, peer); column++; } } return list; } } return null; } #region Private Fields private object _item; private ListViewAutomationPeer _listviewAP; private Hashtable _dataChildren = null; #endregion } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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