C&C Remastered Map Editor

Initial commit of C&C Remastered Map Editor code

CnCTDRAMapEditor/Controls/PropertiesComboBox.cs

@@ -0,0 +1,65 @@
+//
+// Copyright 2020 Electronic Arts Inc.
+//
+// The Command & Conquer Map Editor and corresponding source code 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.
+
+// The Command & Conquer Map Editor and corresponding source code is distributed 
+// in the hope that it will be useful, but with permitted additional restrictions 
+// under Section 7 of the GPL. See the GNU General Public License in LICENSE.TXT 
+// distributed with this program. You should have received a copy of the 
+// GNU General Public License along with permitted additional restrictions 
+// with this program. If not, see https://github.com/electronicarts/CnC_Remastered_Collection
+using System;
+using System.Windows.Forms;
+
+namespace MobiusEditor.Controls
+{
+    public partial class PropertiesComboBox : ComboBox
+    {
+        private bool savedAutoClose;
+
+        private ToolStripDropDown DropDownHost
+        {
+            get
+            {
+                var parent = Parent;
+                while ((parent != null) && !(parent is ToolStripDropDown))
+                {
+                    parent = parent.Parent;
+                }
+                return parent as ToolStripDropDown;
+            }
+        }
+
+        public PropertiesComboBox()
+        {
+            InitializeComponent();
+        }
+
+        protected override void OnDropDownClosed(EventArgs e)
+        {
+            var dropDownHost = DropDownHost;
+            if (dropDownHost != null)
+            {
+                dropDownHost.AutoClose = savedAutoClose;
+            }
+
+            base.OnDropDownClosed(e);
+        }
+
+        protected override void OnDropDown(EventArgs e)
+        {
+            var dropDownHost = DropDownHost;
+            if (dropDownHost != null)
+            {
+                savedAutoClose = dropDownHost.AutoClose;
+                dropDownHost.AutoClose = false;
+            }
+
+            base.OnDropDown(e);
+        }
+    }
+}