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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System;
using System.Windows;
using System.Windows.Navigation;
using System.Windows.Controls;
using System.Windows.Automation;
using System.Windows.Media;
using System.Globalization;
using System.Diagnostics;
using MS.Internal;
namespace MS.Internal.AppModel
{
internal static class NavigationHelper
{
/// <summary>
/// See INavigatorImpl.FindRootViewer().
/// </summary>
internal static Visual FindRootViewer(ContentControl navigator, string contentPresenterName)
{
object content = navigator.Content;
if (content == null || content is Visual)
return content as Visual;
ContentPresenter cp = null;
if (navigator.Template != null)
{
cp = (ContentPresenter)navigator.Template.FindName(contentPresenterName, navigator);
}
// If null, either <contentPresenterName> is not defined in the current template or the template
// has not been applied yet.
if (cp == null || cp.InternalVisualChildrenCount == 0/*Layout not done yet*/)
return null;
Visual v = cp.InternalGetVisualChild(0);
return v;
}
};
}
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