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/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / UIAutomation / UIAutomationClient / System / Windows / Automation / ExpandCollapsePattern.cs / 1305600 / ExpandCollapsePattern.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: Client-side wrapper for ExpandCollapse Pattern // // History: // 06/23/2003 : BrendanM Ported to WCP // //--------------------------------------------------------------------------- using System; using System.Windows.Automation.Provider; using MS.Internal.Automation; namespace System.Windows.Automation { ///wrapper class for ExpandCollapse pattern #if (INTERNAL_COMPILE) internal class ExpandCollapsePattern: BasePattern #else public class ExpandCollapsePattern: BasePattern #endif { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors private ExpandCollapsePattern(AutomationElement el, SafePatternHandle hPattern, bool cached) : base(el, hPattern) { _hPattern = hPattern; _cached = cached; } #endregion Constructors //------------------------------------------------------ // // Public Constants / Readonly Fields // //----------------------------------------------------- #region Public Constants and Readonly Fields ///Scroll pattern public static readonly AutomationPattern Pattern = ExpandCollapsePatternIdentifiers.Pattern; ///Property ID: ExpandCollapseState - Current Collapsed or Expanded state public static readonly AutomationProperty ExpandCollapseStateProperty = ExpandCollapsePatternIdentifiers.ExpandCollapseStateProperty; #endregion Public Constants and Readonly Fields //------------------------------------------------------ // // Public Methods // //------------------------------------------------------ #region Public Methods ////// Blocking method that returns after the element has been expanded /// /// ////// This API does not work inside the secure execution environment. /// public void Expand() { UiaCoreApi.ExpandCollapsePattern_Expand(_hPattern); } ////// /// Blocking method that returns after the element has been collapsed /// /// ////// This API does not work inside the secure execution environment. /// public void Collapse() { UiaCoreApi.ExpandCollapsePattern_Collapse(_hPattern); } #endregion Public Methods //----------------------------------------------------- // // Public Properties // //------------------------------------------------------ #region Public Properties ////// /// This member allows access to previously requested /// cached properties for this element. The returned object /// has accessors for each property defined for this pattern. /// ////// Cached property values must have been previously requested /// using a CacheRequest. If you try to access a cached /// property that was not previously requested, an InvalidOperation /// Exception will be thrown. /// /// To get the value of a property at the current point in time, /// access the property via the Current accessor instead of /// Cached. /// public ExpandCollapsePatternInformation Cached { get { Misc.ValidateCached(_cached); return new ExpandCollapsePatternInformation(_el, true); } } ////// This member allows access to current property values /// for this element. The returned object has accessors for /// each property defined for this pattern. /// ////// This pattern must be from an AutomationElement with a /// Full reference in order to get current values. If the /// AutomationElement was obtained using AutomationElementMode.None, /// then it contains only cached data, and attempting to get /// the current value of any property will throw an InvalidOperationException. /// /// To get the cached value of a property that was previously /// specified using a CacheRequest, access the property via the /// Cached accessor instead of Current. /// public ExpandCollapsePatternInformation Current { get { Misc.ValidateCurrent(_hPattern); return new ExpandCollapsePatternInformation(_el, false); } } #endregion Public Properties //----------------------------------------------------- // // Internal Methods // //----------------------------------------------------- #region Internal Methods internal static object Wrap(AutomationElement el, SafePatternHandle hPattern, bool cached) { return new ExpandCollapsePattern(el, hPattern, cached); } #endregion Internal Methods //----------------------------------------------------- // // Private Fields // //------------------------------------------------------ #region Private Fields private SafePatternHandle _hPattern; private bool _cached; #endregion Private Fields //----------------------------------------------------- // // Nested Classes // //------------------------------------------------------ #region Nested Classes ////// This class provides access to either Cached or Current /// properties on a pattern via the pattern's .Cached or /// .Current accessors. /// public struct ExpandCollapsePatternInformation { //------------------------------------------------------ // // Constructors // //----------------------------------------------------- #region Constructors internal ExpandCollapsePatternInformation( AutomationElement el, bool useCache ) { _el = el; _useCache = useCache; } #endregion Constructors //------------------------------------------------------ // // Public Properties // //----------------------------------------------------- #region Public Properties ///indicates an element's current Collapsed or Expanded state /// ////// This API does not work inside the secure execution environment. /// public ExpandCollapseState ExpandCollapseState { get { return (ExpandCollapseState)_el.GetPatternPropertyValue(ExpandCollapseStateProperty, _useCache); } } #endregion Public Properties //----------------------------------------------------- // // Private Fields // //----------------------------------------------------- #region Private Fields private AutomationElement _el; // AutomationElement that contains the cache or live reference private bool _useCache; // true to use cache, false to use live reference to get current values #endregion Private Fields } #endregion Nested Classes } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.///
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