68 lines
2.1 KiB
C#
68 lines
2.1 KiB
C#
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/*
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Copyright (C) 2014-2019 de4dot@gmail.com
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This file is part of dnSpy
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dnSpy is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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dnSpy is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with dnSpy. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Collections.Generic;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Controls.Primitives;
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using System.Windows.Media;
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using System.Windows.Threading;
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namespace dnSpy.AsmEditor.Utilities {
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static class UIUtils {
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public static IEnumerable<DependencyObject> GetChildren(DependencyObject? depo) {
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if (depo is null)
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yield break;
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int count = VisualTreeHelper.GetChildrenCount(depo);
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for (int i = 0; i < count; i++)
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yield return VisualTreeHelper.GetChild(depo, i);
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}
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public static bool HasSelectedChildrenFocus(ListBox? listBox) {
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if (listBox is null)
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return false;
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foreach (var item in listBox.SelectedItems) {
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var elem = listBox.ItemContainerGenerator.ContainerFromItem(item) as UIElement;
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if (elem is null)
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elem = item as UIElement;
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if (elem is null)
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continue;
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if (elem.IsFocused || elem.IsKeyboardFocusWithin)
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return true;
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}
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return false;
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}
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public static void ScrollSelectAndSetFocus(ListBox listBox, object obj) {
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listBox.SelectedItem = obj;
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listBox.ScrollIntoView(obj);
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SetFocus(listBox, obj, DispatcherPriority.Normal);
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}
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static void SetFocus(Selector selector, object obj, DispatcherPriority prio) => selector.Dispatcher.BeginInvoke(prio, new Action(() => {
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if (selector.SelectedItem == obj) {
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if (selector.ItemContainerGenerator.ContainerFromItem(obj) is IInputElement item)
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item.Focus();
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}
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}));
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}
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}
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