Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Framework / System / Windows / Automation / Peers / FlowDocumentScrollViewerAutomationPeer.cs / 1 / FlowDocumentScrollViewerAutomationPeer.cs
//---------------------------------------------------------------------------- // // Copyright (C) Microsoft Corporation. All rights reserved. // // File: FlowDocumentScrollViewerAutomationPeer.cs // // Description: AutomationPeer associated with FlowDocumentScrollViewer. // //--------------------------------------------------------------------------- using System.Collections.Generic; // Listusing System.Windows.Automation.Provider; // IScrollProvider using System.Windows.Controls; // FlowDocumentScrollViewer using System.Windows.Documents; // FlowDocument using MS.Internal.Documents; // IFlowDocumentViewer namespace System.Windows.Automation.Peers { /// /// AutomationPeer associated with FlowDocumentScrollViewer. /// public class FlowDocumentScrollViewerAutomationPeer : FrameworkElementAutomationPeer { ////// Constructor. /// /// Owner of the AutomationPeer. public FlowDocumentScrollViewerAutomationPeer(FlowDocumentScrollViewer owner) : base(owner) { } ////// public override object GetPattern(PatternInterface patternInterface) { object returnValue = null; if (patternInterface == PatternInterface.Scroll) { FlowDocumentScrollViewer owner = (FlowDocumentScrollViewer)Owner; if (owner.ScrollViewer != null) { AutomationPeer scrollPeer = UIElementAutomationPeer.CreatePeerForElement(owner.ScrollViewer); if (scrollPeer != null && scrollPeer is IScrollProvider) { scrollPeer.EventsSource = this; returnValue = scrollPeer; } } } else if (patternInterface == PatternInterface.Text) { // Make sure that Automation children are created. this.GetChildren(); // Re-expose TextPattern from hosted document. if (_documentPeer != null) { _documentPeer.EventsSource = this; returnValue = _documentPeer.GetPattern(patternInterface); } } return returnValue; } ////// /// ////// /// AutomationPeer associated with FlowDocumentScrollViewer returns an AutomationPeer /// for hosted Document and for elements in the style. /// protected override ListGetChildrenCore() { // Get children for all elements in the style. List children = base.GetChildrenCore(); // If the owner is IFlowDocumentViewer, it means that it is embedded inside // FlowDocumentReaer. In this case DocumentAutumationPeer is already exposed. // Hence there is no need to add it to children collection. if (!(Owner is IFlowDocumentViewer)) { // Add AutomationPeer associated with the document. // Make it the first child of the collection. FlowDocument document = ((FlowDocumentScrollViewer)Owner).Document; if (document != null) { AutomationPeer documentPeer = ContentElementAutomationPeer.CreatePeerForElement(document); if (_documentPeer != documentPeer) { if (_documentPeer != null) { _documentPeer.OnDisconnected(); } _documentPeer = documentPeer as DocumentAutomationPeer; } if (documentPeer != null) { if (children == null) { children = new List (); } children.Add(documentPeer); } } } return children; } /// /// protected override AutomationControlType GetAutomationControlTypeCore() { return AutomationControlType.Document; } ////// /// protected override string GetClassNameCore() { return "FlowDocumentScrollViewer"; } private DocumentAutomationPeer _documentPeer; } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.///
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