From eb62097278167415760583037a62a290ddb0d052 Mon Sep 17 00:00:00 2001
From: Daniel Schick <schick@textbausteine.net>
Date: Sun, 23 Jun 2024 15:31:55 +0200
Subject: [PATCH] Improved Text input for datetime picker Control

---
 .../EditTimesAgencyOutgoingControl.xaml       |  2 +-
 .../EditTimesAgencyOutgoingControl.xaml.cs    | 41 ++++++++++++++++++-
 2 files changed, 41 insertions(+), 2 deletions(-)

diff --git a/src/BreCalClient/EditTimesAgencyOutgoingControl.xaml b/src/BreCalClient/EditTimesAgencyOutgoingControl.xaml
index dc13bd2..5cf1511 100644
--- a/src/BreCalClient/EditTimesAgencyOutgoingControl.xaml
+++ b/src/BreCalClient/EditTimesAgencyOutgoingControl.xaml
@@ -46,7 +46,7 @@
                 <ColumnDefinition Width=".5*" />
                 <ColumnDefinition Width=".5*" />
             </Grid.ColumnDefinitions>
-            <xctk:DateTimePicker x:Name="datePickerETD" Grid.Column="0" Grid.Row="0" Margin="2" Format="Custom" FormatString="dd.MM. yyyy  HH:mm" ValueChanged="datePickerETD_ValueChanged"/>
+            <xctk:DateTimePicker x:Name="datePickerETD" Grid.Column="0" Grid.Row="0" Margin="2" Format="Custom" FormatString="dd.MM. yyyy  HH:mm" ValueChanged="datePickerETD_ValueChanged" PreviewKeyUp="datePickerETD_PreviewKeyUp" PreviewTextInput="datePickerETD_PreviewTextInput"/>
             <xctk:DateTimePicker x:Name="datePickerETD_End" Grid.Column="1" Grid.Row="0" Margin="2" Format="Custom" FormatString="dd.MM. yyyy  HH:mm" ValueChanged="datePickerETD_ValueChanged"/>
         </Grid>
         <Label Content="{x:Static p:Resources.textBerth}" Grid.Column="0" Grid.Row="2" HorizontalContentAlignment="Right" FontWeight="Bold"/>
diff --git a/src/BreCalClient/EditTimesAgencyOutgoingControl.xaml.cs b/src/BreCalClient/EditTimesAgencyOutgoingControl.xaml.cs
index 20c3c69..7eaea66 100644
--- a/src/BreCalClient/EditTimesAgencyOutgoingControl.xaml.cs
+++ b/src/BreCalClient/EditTimesAgencyOutgoingControl.xaml.cs
@@ -4,8 +4,15 @@
 
 using BreCalClient.misc.Model;
 using System;
+using System.Text.RegularExpressions;
 using System.Windows;
+using System.Windows.Controls.Primitives;
+using System.Windows.Controls;
+using Xceed.Wpf.Toolkit;
 using static BreCalClient.Extensions;
+using System.Collections.Generic;
+using System.Linq;
+using System.Windows.Media;
 
 namespace BreCalClient
 {
@@ -66,9 +73,11 @@ namespace BreCalClient
                 (App.Participant.IsTypeFlagSet(ParticipantType.BSMD) && allowBSMD);
 
             this.EnableControls();
-
+           
         }
 
+        
+
         private void buttonOK_Click(object sender, RoutedEventArgs e)
         {
             this.CopyToModel();
@@ -339,5 +348,35 @@ namespace BreCalClient
 
         #endregion
 
+        private void datePickerETD_PreviewKeyUp(object sender, System.Windows.Input.KeyEventArgs e)
+        {
+
+        }
+
+        private void datePickerETD_PreviewTextInput(object sender, System.Windows.Input.TextCompositionEventArgs e)
+        {
+            DateTimePicker dp = (sender as DateTimePicker);
+            
+            // Das ist der richtige Ansatz, funktioniert aber bei der Jahresangabe noch nicht ganz richtig.
+            // Die vom Agenten "vorgeschlagene" Zeit könnte auch der Watermark sein?
+
+            string text = dp.Text + e.Text;
+            dp.Template.LoadContent();
+            if (Regex.IsMatch(text, @"^\d{3}"))
+            {
+                e.Handled = true;
+                WatermarkTextBox tb = dp.Template.FindName("PART_TextBox", dp) as WatermarkTextBox;
+                
+                tb.Text = Regex.Replace(text, @"(\d{2})(\d)", "$1.$2");
+                tb.CaretIndex = tb.Text.Length;
+            }
+            else if (Regex.IsMatch(text, @"^(\d{2}\.\d{3})"))
+            {
+                e.Handled = true;
+                WatermarkTextBox tb = dp.Template.FindName("PART_TextBox", dp) as WatermarkTextBox;
+                tb.Text = Regex.Replace(text, @"(\d{2}\.\d{2})(\d)", "$1.$2");
+                tb.CaretIndex = tb.Text.Length;
+            }
+        }
     }
 }