From f3a2c98f18751db35997a6341ffc24ce54d1851b Mon Sep 17 00:00:00 2001
From: Jonas Arnold <jonas.arnold@live.de>
Date: Tue, 6 Jun 2023 20:03:42 +0200
Subject: [PATCH] implemented automatic focus of the send messagebox after
 inserting a history element in both ConsoleView and SendReceiveView,
 simplifies instant send after inserting

---
 .../MultiFormatTextBox/MultiFormatTextBox.cs       |  2 ++
 MultiTerm.Wpf/View/ConsoleView.xaml                |  3 ++-
 MultiTerm.Wpf/View/ConsoleView.xaml.cs             | 14 ++++++++++++++
 3 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/MultiTerm.Wpf.CustomControl/MultiFormatTextBox/MultiFormatTextBox.cs b/MultiTerm.Wpf.CustomControl/MultiFormatTextBox/MultiFormatTextBox.cs
index 8718910..85d2f2e 100644
--- a/MultiTerm.Wpf.CustomControl/MultiFormatTextBox/MultiFormatTextBox.cs
+++ b/MultiTerm.Wpf.CustomControl/MultiFormatTextBox/MultiFormatTextBox.cs
@@ -170,6 +170,8 @@ public class MultiFormatTextBox : Control
             mftb.AddItemsToTextBox(mftb.CurrentMultiFormatString, 0);
         }
 
+        // focus richtextbox on change of content (e.g. due to insertion of history element)
+        mftb.richTextBox!.Focus();
     }
 
     /// <summary>
diff --git a/MultiTerm.Wpf/View/ConsoleView.xaml b/MultiTerm.Wpf/View/ConsoleView.xaml
index c485f75..46ae11e 100644
--- a/MultiTerm.Wpf/View/ConsoleView.xaml
+++ b/MultiTerm.Wpf/View/ConsoleView.xaml
@@ -115,6 +115,7 @@
                  AllowDrop="False"
                  Text="{Binding Path=SendableMessage, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
                  Style="{StaticResource DataContainerFontStyle}"
-                 PreviewKeyDown="SendableMessageTextBox_PreviewKeyDown"/>
+                 PreviewKeyDown="SendableMessageTextBox_PreviewKeyDown"
+                 TextChanged="SendableMessageTextBox_TextChanged"/>
     </Grid>
 </UserControl>
diff --git a/MultiTerm.Wpf/View/ConsoleView.xaml.cs b/MultiTerm.Wpf/View/ConsoleView.xaml.cs
index 1143a47..9145956 100644
--- a/MultiTerm.Wpf/View/ConsoleView.xaml.cs
+++ b/MultiTerm.Wpf/View/ConsoleView.xaml.cs
@@ -1,5 +1,6 @@
 using MultiTerm.Core.ViewModel;
 using System;
+using System.Linq;
 using System.Windows.Controls;
 using System.Windows.Input;
 
@@ -61,4 +62,17 @@ public partial class ConsoleView : UserControl
         if (sender is not TextBox textBox) { return; }
         textBox.ScrollToEnd();
     }
+
+    private void SendableMessageTextBox_TextChanged(object sender, TextChangedEventArgs e)
+    {
+        // more than one change and added length is more than 1 letter
+        // => suspect change results from inserting an element from the send history or pasted from the clipboard
+        if (e.Changes.Count >= 1 && e.Changes.First().AddedLength > 1)
+        {   
+            // focus the textbox
+            this.sendableMessageTextBox.Focus();
+            // set cursor to end
+            this.sendableMessageTextBox.CaretIndex = this.sendableMessageTextBox.Text.Length; 
+        }
+    }
 }
\ No newline at end of file