121 lines
3.9 KiB
C#
121 lines
3.9 KiB
C#
/*************************************************************************************
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Extended WPF Toolkit
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Copyright (C) 2007-2013 Xceed Software Inc.
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This program is provided to you under the terms of the Microsoft Public
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License (Ms-PL) as published at http://wpftoolkit.codeplex.com/license
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For more features, controls, and fast professional support,
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pick up the Plus Edition at http://xceed.com/wpf_toolkit
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Stay informed: follow @datagrid on Twitter or Like http://facebook.com/datagrids
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***********************************************************************************/
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Windows;
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using System.Windows.Media;
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using System.Windows.Media.Media3D;
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using System.Runtime.InteropServices;
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namespace Xceed.Wpf.AvalonDock.Controls
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{
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public static class Extentions
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{
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public static IEnumerable<T> FindVisualChildren<T>(this DependencyObject depObj) where T : DependencyObject
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{
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if (depObj != null)
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{
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for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)
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{
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DependencyObject child = VisualTreeHelper.GetChild(depObj, i);
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if (child != null && child is T)
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{
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yield return (T)child;
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}
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foreach (T childOfChild in FindVisualChildren<T>(child))
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{
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yield return childOfChild;
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}
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}
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}
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}
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public static IEnumerable<T> FindLogicalChildren<T>(this DependencyObject depObj) where T : DependencyObject
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{
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if (depObj != null)
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{
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foreach (DependencyObject child in LogicalTreeHelper.GetChildren(depObj).OfType<DependencyObject>())
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{
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if (child != null && child is T)
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{
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yield return (T)child;
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}
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foreach (T childOfChild in FindLogicalChildren<T>(child))
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{
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yield return childOfChild;
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}
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}
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}
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}
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public static DependencyObject FindVisualTreeRoot(this DependencyObject initial)
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{
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DependencyObject current = initial;
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DependencyObject result = initial;
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while (current != null)
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{
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result = current;
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if (current is Visual || current is Visual3D)
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{
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current = VisualTreeHelper.GetParent(current);
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}
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else
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{
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// If we're in Logical Land then we must walk
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// up the logical tree until we find a
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// Visual/Visual3D to get us back to Visual Land.
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current = LogicalTreeHelper.GetParent(current);
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}
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}
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return result;
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}
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public static T FindVisualAncestor<T>(this DependencyObject dependencyObject) where T : class
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{
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DependencyObject target = dependencyObject;
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do
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{
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target = VisualTreeHelper.GetParent(target);
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}
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while (target != null && !(target is T));
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return target as T;
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}
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public static T FindLogicalAncestor<T>(this DependencyObject dependencyObject) where T : class
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{
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DependencyObject target = dependencyObject;
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do
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{
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var current = target;
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target = LogicalTreeHelper.GetParent(target);
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if (target == null)
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target = VisualTreeHelper.GetParent(current);
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}
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while (target != null && !(target is T));
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return target as T;
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}
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}
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}
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