From cc1c407756e2f909e7fc6b323cf665ad2c36215a Mon Sep 17 00:00:00 2001
From: MaxED <j.maxed@gmail.com>
Date: Tue, 23 Sep 2014 08:54:53 +0000
Subject: [PATCH] Action Selector control: actions can now be scrolled using
 up/down keys and mouse wheel.

---
 Source/Core/Controls/ActionSelectorControl.cs | 40 +++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/Source/Core/Controls/ActionSelectorControl.cs b/Source/Core/Controls/ActionSelectorControl.cs
index b56232ee..8e2ae8b6 100644
--- a/Source/Core/Controls/ActionSelectorControl.cs
+++ b/Source/Core/Controls/ActionSelectorControl.cs
@@ -50,6 +50,7 @@ namespace CodeImp.DoomBuilder.Controls
 		{
 			// Initialize
 			InitializeComponent();
+			number.MouseWheel += number_OnMouseWheel; //mxd
 		}
 
 		// This returns the numeric value
@@ -223,6 +224,30 @@ namespace CodeImp.DoomBuilder.Controls
 			// Allow CTRL+X, CTRL+C and CTRL+V
 			if(controlpressed && ((e.KeyCode == Keys.X) || (e.KeyCode == Keys.C) || (e.KeyCode == Keys.V))) return;
 
+			//mxd. Scroll action list using arrow keys
+			if (e.KeyCode == Keys.Down)
+			{
+				if (list.SelectedIndex > 0)
+				{
+					list.SelectedIndex--;
+					list_SelectionChangeCommitted(list, EventArgs.Empty);
+				}
+				// Cancel this
+				e.Handled = true;
+				return;
+			}
+			if(e.KeyCode == Keys.Up) 
+			{
+				if (list.SelectedIndex < list.Items.Count)
+				{
+					list.SelectedIndex++;
+					list_SelectionChangeCommitted(list, EventArgs.Empty);
+				}
+				// Cancel this
+				e.Handled = true;
+				return;
+			}
+
 			// Not numeric or control key?
 			if(((e.KeyValue < 48) || (e.KeyValue > 57)) &&
 			   (e.KeyCode != Keys.Back) && (e.KeyCode != Keys.Left) &&
@@ -246,6 +271,21 @@ namespace CodeImp.DoomBuilder.Controls
 				e.Handled = true;
 			}
 		}
+
+		//mxd. Scrolls action list using mouse wheel
+		private void number_OnMouseWheel(object sender, MouseEventArgs e) 
+		{
+			if (e.Delta < 0 && list.SelectedIndex > 0)
+			{
+				list.SelectedIndex--;
+				list_SelectionChangeCommitted(list, EventArgs.Empty);
+			}
+			else if (e.Delta > 0 && list.SelectedIndex < list.Items.Count)
+			{
+				list.SelectedIndex++;
+				list_SelectionChangeCommitted(list, EventArgs.Empty);
+			}
+		}
 		
 		// Selection made
 		private void list_SelectionChangeCommitted(object sender, EventArgs e)