Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Framework / System / Windows / Automation / Peers / ExpanderAutomationPeer.cs / 1 / ExpanderAutomationPeer.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.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 ExpanderAutomationPeer : FrameworkElementAutomationPeer, IExpandCollapseProvider { /// public ExpanderAutomationPeer(Expander owner): base(owner) {} /// override protected string GetClassNameCore() { return "Expander"; } /// override protected AutomationControlType GetAutomationControlTypeCore() { return AutomationControlType.Group; } /// override public object GetPattern(PatternInterface pattern) { object iface = null; if(pattern == PatternInterface.ExpandCollapse) { iface = this; } else { iface = base.GetPattern(pattern); } return iface; } #region ExpandCollapse ////// Blocking method that returns after the element has been expanded. /// ///true if the node was successfully expanded void IExpandCollapseProvider.Expand() { if (!IsEnabled()) throw new ElementNotEnabledException(); Expander owner = (Expander)((ExpanderAutomationPeer)this).Owner; owner.IsExpanded = true; } ////// Blocking method that returns after the element has been collapsed. /// ///true if the node was successfully collapsed void IExpandCollapseProvider.Collapse() { if (!IsEnabled()) throw new ElementNotEnabledException(); Expander owner = (Expander)((ExpanderAutomationPeer)this).Owner; owner.IsExpanded = false; } ///indicates an element's current Collapsed or Expanded state ExpandCollapseState IExpandCollapseProvider.ExpandCollapseState { get { Expander owner = (Expander)((ExpanderAutomationPeer)this).Owner; return owner.IsExpanded ? ExpandCollapseState.Expanded : ExpandCollapseState.Collapsed; } } // [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)] internal void RaiseExpandCollapseAutomationEvent(bool oldValue, bool newValue) { RaisePropertyChangedEvent( ExpandCollapsePatternIdentifiers.ExpandCollapseStateProperty, oldValue ? ExpandCollapseState.Expanded : ExpandCollapseState.Collapsed, newValue ? ExpandCollapseState.Expanded : ExpandCollapseState.Collapsed); } #endregion ExpandCollapse } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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