Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / System / Windows / Automation / Peers / TextBoxAutomationPeer.cs / 1407647 / TextBoxAutomationPeer.cs
using System; 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 System.Windows.Documents; using MS.Internal; using MS.Internal.Automation; using MS.Win32; namespace System.Windows.Automation.Peers { /// public class TextBoxAutomationPeer : TextAutomationPeer, IValueProvider { /// public TextBoxAutomationPeer(TextBox owner): base(owner) { _textPattern = new TextAdaptor(this, ((TextBoxBase)owner).TextContainer); } /// override protected string GetClassNameCore() { return "TextBox"; } /// override protected AutomationControlType GetAutomationControlTypeCore() { return AutomationControlType.Edit; } /// override public object GetPattern(PatternInterface patternInterface) { object returnValue = null; if(patternInterface == PatternInterface.Value) returnValue = this; if (patternInterface == PatternInterface.Text) { if(_textPattern == null) _textPattern = new TextAdaptor(this, ((TextBoxBase)Owner).TextContainer); return _textPattern; } if (patternInterface == PatternInterface.Scroll) { TextBox owner = (TextBox)Owner; if (owner.ScrollViewer != null) { returnValue = owner.ScrollViewer.CreateAutomationPeer(); ((AutomationPeer)returnValue).EventsSource = this; } } if (patternInterface == PatternInterface.SynchronizedInput) { returnValue = base.GetPattern(patternInterface); } return returnValue; } bool IValueProvider.IsReadOnly { get { TextBox owner = (TextBox)Owner; return owner.IsReadOnly; } } string IValueProvider.Value { get { TextBox owner = (TextBox)Owner; return owner.Text; } } void IValueProvider.SetValue(string value) { if(!IsEnabled()) throw new ElementNotEnabledException(); TextBox owner = (TextBox)Owner; if (owner.IsReadOnly) { throw new ElementNotEnabledException(); } if (value == null) { throw new ArgumentNullException("value"); } owner.Text = value; } // [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)] internal void RaiseValuePropertyChangedEvent(string oldValue, string newValue) { if (oldValue != newValue) { RaisePropertyChangedEvent(ValuePatternIdentifiers.ValueProperty, oldValue, newValue); } } // [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)] internal void RaiseIsReadOnlyPropertyChangedEvent(bool oldValue, bool newValue) { if (oldValue != newValue) { RaisePropertyChangedEvent(ValuePatternIdentifiers.IsReadOnlyProperty, oldValue, newValue); } } ////// Gets collection of AutomationPeers for given text range. /// internal override ListGetAutomationPeersFromRange(ITextPointer start, ITextPointer end) { return new List (); } private TextAdaptor _textPattern; } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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