106 lines
3.2 KiB
C#
106 lines
3.2 KiB
C#
#region License
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// Copyright (C) 2020 Reetus
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//
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// This program 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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//
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// This program 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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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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#endregion
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Documents;
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using System.Windows.Input;
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//https://stackoverflow.com/questions/4305565/wpf-context-menu-on-left-click
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namespace ClassicAssist.UI.Misc
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{
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public class ClickOpensContextMenuBehaviour
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{
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private static readonly DependencyProperty ClickOpensContextMenuProperty =
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DependencyProperty.RegisterAttached( "Enabled", typeof( bool ), typeof( ClickOpensContextMenuBehaviour ),
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new PropertyMetadata( HandlePropertyChanged ) );
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public static bool GetEnabled( DependencyObject obj )
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{
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return (bool) obj.GetValue( ClickOpensContextMenuProperty );
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}
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public static void SetEnabled( DependencyObject obj, bool value )
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{
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obj.SetValue( ClickOpensContextMenuProperty, value );
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}
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private static void HandlePropertyChanged( DependencyObject obj, DependencyPropertyChangedEventArgs args )
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{
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switch ( obj )
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{
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case Image image:
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image.MouseLeftButtonDown -= ExecuteMouseDown;
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image.MouseLeftButtonDown += ExecuteMouseDown;
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break;
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case Hyperlink hyperlink:
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hyperlink.Click -= ExecuteClick;
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hyperlink.Click += ExecuteClick;
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break;
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}
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}
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private static void ExecuteMouseDown( object sender, MouseButtonEventArgs args )
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{
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if ( !( sender is DependencyObject obj ) )
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{
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return;
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}
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bool enabled = (bool) obj.GetValue( ClickOpensContextMenuProperty );
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if ( !enabled )
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{
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return;
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}
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Image image = sender as Image;
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if ( image?.ContextMenu != null )
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{
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image.ContextMenu.IsOpen = true;
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}
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}
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private static void ExecuteClick( object sender, RoutedEventArgs args )
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{
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if ( !( sender is DependencyObject obj ) )
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{
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return;
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}
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bool enabled = (bool) obj.GetValue( ClickOpensContextMenuProperty );
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if ( !enabled )
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{
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return;
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}
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if ( !( sender is Hyperlink hyperlink ) )
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{
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return;
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}
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if ( hyperlink.ContextMenu != null )
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{
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hyperlink.ContextMenu.IsOpen = true;
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}
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}
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}
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} |