From e8ef47f33d2c47125a5de3500f66cf64b992cc24 Mon Sep 17 00:00:00 2001
From: leo <longshuang@msn.cn>
Date: Mon, 13 Jul 2020 09:45:34 +0800
Subject: [PATCH] Enable mouse wheel in commit message TextBox

---
 SourceGit/UI/WorkingCopy.xaml    |  3 ++-
 SourceGit/UI/WorkingCopy.xaml.cs | 11 +++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/SourceGit/UI/WorkingCopy.xaml b/SourceGit/UI/WorkingCopy.xaml
index c4957829..28d79646 100644
--- a/SourceGit/UI/WorkingCopy.xaml
+++ b/SourceGit/UI/WorkingCopy.xaml
@@ -343,7 +343,8 @@
                 ScrollViewer.HorizontalScrollBarVisibility="Disabled"
                 ScrollViewer.VerticalScrollBarVisibility="Auto"
                 helpers:TextBoxHelper.Placeholder="Enter commit message"
-                helpers:TextBoxHelper.PlaceholderBaseline="Top">
+                helpers:TextBoxHelper.PlaceholderBaseline="Top"
+                PreviewMouseWheel="CommitMsgPreviewMouseWheel">
                 <TextBox.Text>
                     <Binding ElementName="me" Path="CommitMessage" Mode="TwoWay" UpdateSourceTrigger="PropertyChanged">
                         <Binding.ValidationRules>
diff --git a/SourceGit/UI/WorkingCopy.xaml.cs b/SourceGit/UI/WorkingCopy.xaml.cs
index 6e0345b8..19201cac 100644
--- a/SourceGit/UI/WorkingCopy.xaml.cs
+++ b/SourceGit/UI/WorkingCopy.xaml.cs
@@ -683,6 +683,17 @@ namespace SourceGit.UI {
         #endregion
 
         #region COMMIT_PANEL
+        private void CommitMsgPreviewMouseWheel(object sender, MouseWheelEventArgs e) {
+            var textBox = sender as TextBox;
+            if (textBox == null) return;
+
+            if (e.Delta > 0) {
+                textBox.LineUp();
+            } else {
+                textBox.LineDown();
+            }
+        }
+
         private void OpenCommitMessageSelector(object sender, RoutedEventArgs e) {
             var anchor = sender as Button;