first commit

ClassicAssist.Launcher/Behaviours/CloseOnClickBehaviour.cs

@@ -0,0 +1,33 @@
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Interactivity;
+
+namespace ClassicAssist.Launcher.Behaviours
+{
+    public class CloseOnClickBehaviour : Behavior<Button>
+    {
+        protected override void OnAttached()
+        {
+            base.OnAttached();
+
+            AssociatedObject.Click += OnClick;
+        }
+
+        protected override void OnDetaching()
+        {
+            AssociatedObject.Click -= OnClick;
+        }
+
+        private void OnClick( object sender, RoutedEventArgs e )
+        {
+            if ( !( sender is Button button ) )
+            {
+                return;
+            }
+
+            Window window = Window.GetWindow( button );
+
+            window?.Close();
+        }
+    }
+}

ClassicAssist.Launcher/Behaviours/WindowClosingBehaviour.cs

@@ -0,0 +1,58 @@
+#region License
+
+// Copyright (C) 2020 Reetus
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#endregion
+
+using System.ComponentModel;
+using System.Windows;
+using System.Windows.Input;
+using System.Windows.Interactivity;
+
+namespace ClassicAssist.Launcher.Behaviours
+{
+    public class WindowClosingBehaviour : Behavior<Window>
+    {
+        public static DependencyProperty CommandProperty = DependencyProperty.Register( "Command", typeof( ICommand ),
+            typeof( WindowClosingBehaviour ),
+            new FrameworkPropertyMetadata( default, FrameworkPropertyMetadataOptions.None ) );
+
+        public ICommand Command
+        {
+            get => (ICommand) GetValue( CommandProperty );
+            set => SetValue( CommandProperty, value );
+        }
+
+        protected override void OnAttached()
+        {
+            base.OnAttached();
+
+            AssociatedObject.Closing += OnClosing;
+        }
+
+        protected override void OnDetaching()
+        {
+            base.OnDetaching();
+
+            AssociatedObject.Closing -= OnClosing;
+        }
+
+        private void OnClosing( object sender, CancelEventArgs e )
+        {
+            Command?.Execute( sender );
+        }
+    }
+}