Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / System / Windows / Automation / Peers / TextAutomationPeer.cs / 1305600 / TextAutomationPeer.cs
//---------------------------------------------------------------------------- // // Copyright (C) Microsoft Corporation. All rights reserved. // // File: ContentTextElementAutomationPeer.cs // // Description: Base class for AutomationPeers associated with TextPattern. // //--------------------------------------------------------------------------- using System.Collections.Generic; // Listusing System.Windows.Automation.Provider; // IRawElementProviderSimple using System.Windows.Documents; // ITextPointer namespace System.Windows.Automation.Peers { /// /// Base class for AutomationPeers associated with TextPattern. /// public abstract class TextAutomationPeer : FrameworkElementAutomationPeer { ////// Constructor. /// protected TextAutomationPeer(FrameworkElement owner) : base(owner) {} ////// GetNameCore will return a value matching (in priority order) /// /// 1. Automation.Name /// 2. GetLabeledBy.Name /// 3. String.Empty /// /// This differs from the base implementation in that we must /// never return GetPlainText() . /// override protected string GetNameCore() { string result = AutomationProperties.GetName(this.Owner); if (string.IsNullOrEmpty(result)) { AutomationPeer labelAutomationPeer = GetLabeledByCore(); if (labelAutomationPeer != null) { result = labelAutomationPeer.GetName(); } } return result ?? string.Empty; } ////// Maps AutomationPeer to provider object. /// internal new IRawElementProviderSimple ProviderFromPeer(AutomationPeer peer) { return base.ProviderFromPeer(peer); } ////// Maps automation provider to DependencyObject. /// internal DependencyObject ElementFromProvider(IRawElementProviderSimple provider) { DependencyObject element = null; AutomationPeer peer = PeerFromProvider(provider); if (peer is UIElementAutomationPeer) { element = ((UIElementAutomationPeer)peer).Owner; } else if (peer is ContentElementAutomationPeer) { element = ((ContentElementAutomationPeer)peer).Owner; } return element; } ////// Gets collection of AutomationPeers for given text range. /// internal abstract ListGetAutomationPeersFromRange(ITextPointer start, ITextPointer end); } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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