From 8dadf51997ab41baf1f02f01c8b716932544faa2 Mon Sep 17 00:00:00 2001
From: Thomas Hilscher <thomas.hilscher@gmail.com>
Date: Sat, 25 Mar 2023 14:53:05 +0100
Subject: [PATCH] AreaCommWindow now inherits from AdministrationWindow

---
 Elwig/Windows/AreaCommAdminWindow.xaml    | 126 ++++++++++++---
 Elwig/Windows/AreaCommAdminWindow.xaml.cs | 186 +++++++++++-----------
 2 files changed, 200 insertions(+), 112 deletions(-)

diff --git a/Elwig/Windows/AreaCommAdminWindow.xaml b/Elwig/Windows/AreaCommAdminWindow.xaml
index a000682..cb82cf2 100644
--- a/Elwig/Windows/AreaCommAdminWindow.xaml
+++ b/Elwig/Windows/AreaCommAdminWindow.xaml
@@ -1,11 +1,11 @@
-<Window x:Class="Elwig.Windows.AreaCommAdminWindow"
+<local:AdministrationWindow x:Class="Elwig.Windows.AreaCommAdminWindow"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         xmlns:local="clr-namespace:Elwig.Windows"
         mc:Ignorable="d"
-        Title="Flächenbindugen - Elwig" Height="600" Width="850"
+        Title="Flächenbindugen - Elwig" Height="500" Width="950"
         Loaded="Window_Loaded">
     <Window.Resources>
         <Style TargetType="Label">
@@ -39,10 +39,12 @@
     <Grid>
         <Grid.RowDefinitions>
             <RowDefinition Height="19"/>
+            <RowDefinition Height="120"/>
+            <RowDefinition Height="190"/>
             <RowDefinition Height="1*"/>
         </Grid.RowDefinitions>
         <Grid.ColumnDefinitions>
-            <ColumnDefinition Width="370"/>
+            <ColumnDefinition Width="620"/>
             <ColumnDefinition Width="1*"/>
         </Grid.ColumnDefinitions>
 
@@ -55,36 +57,84 @@
                 <ColumnDefinition Width="125"/>
                 <ColumnDefinition Width="120"/>
                 <ColumnDefinition Width="125"/>
+                <ColumnDefinition Width="125"/>
+                <ColumnDefinition Width="125"/>
+                <ColumnDefinition Width="*"/>
             </Grid.ColumnDefinitions>
 
-            <DataGrid x:Name="AreaCommitmentList" AutoGenerateColumns="False" HeadersVisibility="Column" IsReadOnly="True" GridLinesVisibility="None" SelectionMode="Single"
-                  CanUserDeleteRows="False" CanUserResizeRows="False" CanUserAddRows="False" SelectionChanged="AreaCommitmentList_SelectionChanged" Grid.Column="0" Grid.Row="1"
-                  Margin="10,10,10,47" FontSize="14" Grid.ColumnSpan="3">
+            <DataGrid x:Name="ContractList" AutoGenerateColumns="False" HeadersVisibility="Column" IsReadOnly="True" GridLinesVisibility="None" SelectionMode="Single"
+                  CanUserDeleteRows="False" CanUserResizeRows="False" CanUserAddRows="False" SelectionChanged="ContractList_SelectionChanged" Grid.Column="0" Grid.Row="1"
+                  Margin="10,10,5,47" FontSize="14" Grid.ColumnSpan="2" Background="#e2e2e2">
                 <DataGrid.Columns>
-                    <DataGridTextColumn Header="Gemeinde"   Binding="{Binding Kg.Kg.Name}"  Width="5*"/>
-                    <DataGridTextColumn Header="Ried"       Binding="{Binding Rd.Name}"  Width="5*"/>
-                    <DataGridTextColumn Header="Parzelle"   Binding="{Binding GstNr}"    Width="3*"/>
+                    <DataGridTextColumn Header="VNr."  Binding="{Binding VNr}"       Width="*"/>
+                    <DataGridTextColumn Header="Von"   Binding="{Binding YearFrom}"  Width="*"/>
+                    <DataGridTextColumn Header="Bis"   Binding="{Binding YearTo}"    Width="*"/>
                 </DataGrid.Columns>
             </DataGrid>
 
-            <Button x:Name="NewAreaCommitmentButton" Content="Neu" Click="NewAreaCommitmentButton_Click"
-                    HorizontalAlignment="Left" VerticalAlignment="Bottom" Margin="10,10,0,10" Width="110" Grid.Column="0"/>
-            <Button x:Name="EditAreaCommitmentButton" Content="Bearbeiten" Click="EditAreaCommitmentButton_Click" IsEnabled="False"
-                    HorizontalAlignment="Center" VerticalAlignment="Bottom" Margin="0,10,0,10" Width="110" Grid.Column="1"/>
-            <Button x:Name="DeleteAreaCommitmentButton" Content="Löschen" Click="DeleteAreaCommitmentButton_Click" IsEnabled="False"
-                    HorizontalAlignment="Right" VerticalAlignment="Bottom" Margin="0,10,10,10" Width="110" Grid.Column="2"/>
 
-            <Button x:Name="SaveButton" Content="Speichern" Click="SaveButton_Click" IsEnabled="False" Visibility="Hidden"
+            <Button x:Name="NewContractButton" Content="Neu" Click="NewContractButton_Click"
                     HorizontalAlignment="Left" VerticalAlignment="Bottom" Margin="10,10,0,10" Width="110" Grid.Column="0"/>
-            <Button x:Name="ResetButton" Content="Zurücksetzen" Click="ResetButton_Click" IsEnabled="False" Visibility="Hidden"
-                    HorizontalAlignment="Center" VerticalAlignment="Bottom" Margin="0,10,0,10" Width="110" Grid.Column="1"/>
-            <Button x:Name="CancelButton" Content="Abbrechen" Click="CancelButton_Click" IsEnabled="False" Visibility="Hidden" IsCancel="True"
-                    HorizontalAlignment="Right" VerticalAlignment="Bottom" Margin="0,10,10,10" Width="110" Grid.Column="2"/>
+            <Button x:Name="DeleteContractButton" Content="Löschen" Click="DeleteContractButton_Click" IsEnabled="False"
+                    HorizontalAlignment="Left" VerticalAlignment="Bottom" Margin="5,10,0,10" Width="110" Grid.Column="1"/>
+
+            <Button x:Name="ContractSaveButton" Content="Speichern" Click="ContractSaveButton_Click" IsEnabled="False" Visibility="Hidden"
+                    HorizontalAlignment="Left" VerticalAlignment="Bottom" Margin="10,10,0,10" Width="110" Grid.Column="0"/>
+            <Button x:Name="ContractCancelButton" Content="Abbrechen" Click="ContractCancelButton_Click" IsEnabled="False" Visibility="Hidden" IsCancel="True"
+                    HorizontalAlignment="Right" VerticalAlignment="Bottom" Margin="0,10,10,10" Width="110" Grid.Column="1"/>
+
+
+
+            <Button x:Name="NewAreaCommitmentButton" Content="Neu" Click="NewAreaCommitmentButton_Click" IsEnabled="False"
+                    HorizontalAlignment="Left" VerticalAlignment="Bottom" Margin="5,10,0,10" Width="110" Grid.Column="2"/>
+            <Button x:Name="EditAreaCommitmentButton" Content="Bearbeiten" Click="EditAreaCommitmentButton_Click" IsEnabled="False"
+                    HorizontalAlignment="Center" VerticalAlignment="Bottom" Margin="0,10,0,10" Width="110" Grid.Column="3"/>
+            <Button x:Name="DeleteAreaCommitmentButton" Content="Löschen" Click="DeleteAreaCommitmentButton_Click" IsEnabled="False"
+                    HorizontalAlignment="Right" VerticalAlignment="Bottom" Margin="0,10,10,10" Width="110" Grid.Column="4"/>
+
+            <Button x:Name="AreaCommitmentSaveButton" Content="Speichern" Click="AreaCommitmentSaveButton_Click" IsEnabled="False" Visibility="Hidden"
+                    HorizontalAlignment="Left" VerticalAlignment="Bottom" Margin="10,10,0,10" Width="110" Grid.Column="2"/>
+            <Button x:Name="AreaCommitmentResetButton" Content="Zurücksetzen" Click="AreaCommitmentResetButton_Click" IsEnabled="False" Visibility="Hidden"
+                    HorizontalAlignment="Center" VerticalAlignment="Bottom" Margin="0,10,0,10" Width="110" Grid.Column="3"/>
+            <Button x:Name="AreaCommitmentCancelButton" Content="Abbrechen" Click="AreaCommitmentCancelButton_Click" IsEnabled="False" Visibility="Hidden" IsCancel="True"
+                    HorizontalAlignment="Right" VerticalAlignment="Bottom" Margin="0,10,10,10" Width="110" Grid.Column="4"/>
+
+            <DataGrid x:Name="AreaCommitmentList" AutoGenerateColumns="False" HeadersVisibility="Column" IsReadOnly="True" GridLinesVisibility="None" SelectionMode="Single"
+                  CanUserDeleteRows="False" CanUserResizeRows="False" CanUserAddRows="False" SelectionChanged="AreaCommitmentList_SelectionChanged" Grid.Column="2" Grid.Row="1"
+                  Margin="5,10,10,47" FontSize="14" Grid.ColumnSpan="3" Background="#e2e2e2">
+                <DataGrid.Columns>
+                    <DataGridTextColumn Header="Katastralgemeinde"  Binding="{Binding Kg.Kg.Name}"  Width="5*"/>
+                    <DataGridTextColumn Header="Ried"               Binding="{Binding Rd.Name}"     Width="4*"/>
+                    <DataGridTextColumn Header="Parzelle"           Binding="{Binding GstNr}"       Width="4*"/>
+                </DataGrid.Columns>
+            </DataGrid>
+
         </Grid>
 
+        <GroupBox Header="Vertrag" Grid.Column="1" Grid.Row="1" Grid.RowSpan="1" Margin="5,5,5,5">
+            <Grid>
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="60"/>
+                    <ColumnDefinition Width="1*"/>
+                    <ColumnDefinition Width="50"/>
+                    <ColumnDefinition Width="2*"/>
+                </Grid.ColumnDefinitions>
 
-
-        <GroupBox Header="Lage" Grid.Column="1" Grid.Row="1" Grid.RowSpan="2" Margin="5,5,5,5">
+                <Label Content="VNr.:" Margin="10,10,0,0" Grid.Column="0"/>
+                <TextBox x:Name="VNr" Margin="0,10,0,0" Width="48" Grid.Column="1" TextAlignment="Right" HorizontalAlignment="Left"/>
+                
+                <Label Content="MgNr.:" Margin="10,40,0,0" Grid.Column="0"/>
+                <TextBox x:Name="MgNr" Margin="0,40,0,0" Width="48" Grid.Column="1" TextAlignment="Right" HorizontalAlignment="Left"/>
+                
+                <Label Content="Von:" Margin="10,10,0,0" Grid.Column="2"/>
+                <TextBox x:Name="YearFrom" Margin="0,10,0,0" Width="100" Grid.Column="3" TextAlignment="Right" HorizontalAlignment="Left"/>
+                
+                <Label Content="Bis:" Margin="10,40,0,0" Grid.Column="2"/>
+                <TextBox x:Name="YearTo" Margin="0,40,0,0" Width="100" Grid.Column="3" TextAlignment="Right" HorizontalAlignment="Left"/>
+            </Grid>
+        </GroupBox>
+        
+        <GroupBox Header="Lage" Grid.Column="1" Grid.Row="2" Grid.RowSpan="1" Margin="5,5,5,5">
             <Grid>
                 <Grid.ColumnDefinitions>
                     <ColumnDefinition Width="80"/>
@@ -95,14 +145,44 @@
                 <ComboBox x:Name="KgInput" ItemTemplate="{StaticResource KgTemplate}" TextSearch.TextPath="Name"
                           Width="200" HorizontalAlignment="Left"
                           Margin="0,10,10,0" Grid.Column="1"/>
+                
                 <Label Content="Ried:" Margin="10,40,0,0" Grid.Column="0"/>
                 <ComboBox x:Name="RdInput" ItemTemplate="{StaticResource KgTemplate}" TextSearch.TextPath="Name"
                           Width="200" HorizontalAlignment="Left"
                           Margin="0,40,0,0" Grid.Column="1"/>
+                
                 <Label Content="Parzelle:" Margin="10,70,0,0" Grid.Column="0"/>
                 <TextBox x:Name="GstNr" Margin="0,70,0,0" Width="100" Grid.Column="1" TextAlignment="Right" HorizontalAlignment="Left"/>
+
+                <Label Content="Fläche:" Margin="10,100,0,0" Grid.Column="0"/>
+                <TextBox x:Name="Area" Margin="0,100,0,0" Width="100" Grid.Column="1" TextAlignment="Right" HorizontalAlignment="Left"/>
             </Grid>
+
         </GroupBox>
 
+        <GroupBox Header="Eigenschaften" Grid.Column="1" Grid.Row="3" Grid.RowSpan="1" Margin="5,5,5,5">
+            <Grid>
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="80"/>
+                    <ColumnDefinition Width="*"/>
+                </Grid.ColumnDefinitions>
+
+                <Label Content="Sorte:" Margin="10,10,0,0" Grid.Column="0"/>
+                <ComboBox x:Name="SortInput" ItemTemplate="{StaticResource KgTemplate}" TextSearch.TextPath="Name"
+                          Width="200" HorizontalAlignment="Left"
+                          Margin="0,10,10,0" Grid.Column="1"/>
+
+                <Label Content="Attribut:" Margin="10,40,0,0" Grid.Column="0"/>
+                <ComboBox x:Name="AttrInput" ItemTemplate="{StaticResource KgTemplate}" TextSearch.TextPath="Name"
+                          Width="200" HorizontalAlignment="Left"
+                          Margin="0,40,10,0" Grid.Column="1"/>
+
+                <Label Content="Bewirt. Art:" Margin="10,70,0,0" Grid.Column="0"/>
+                <ComboBox x:Name="CultInput" ItemTemplate="{StaticResource KgTemplate}" TextSearch.TextPath="Name"
+                          Width="200" HorizontalAlignment="Left"
+                          Margin="0,70,10,0" Grid.Column="1"/>
+
+            </Grid>
+        </GroupBox>
     </Grid>
-</Window>
+</local:AdministrationWindow>
diff --git a/Elwig/Windows/AreaCommAdminWindow.xaml.cs b/Elwig/Windows/AreaCommAdminWindow.xaml.cs
index 56a9b7a..b4aae10 100644
--- a/Elwig/Windows/AreaCommAdminWindow.xaml.cs
+++ b/Elwig/Windows/AreaCommAdminWindow.xaml.cs
@@ -9,40 +9,56 @@ using System.Runtime.CompilerServices;
 using System;
 
 namespace Elwig.Windows {
-    public partial class AreaCommAdminWindow : Window {
-        private readonly AppDbContext Context = new();
+    public partial class AreaCommAdminWindow : AdministrationWindow {
         private readonly Member member;
         private bool IsEditing = false;
         private bool IsCreating = false;
-        private IEnumerable<TextBox> TextBoxInputs = Array.Empty<TextBox>();
-        private IEnumerable<ComboBox> ComboBoxInputs = Array.Empty<ComboBox>();
-        private readonly Dictionary<Control, bool> Valid = new();
-        private readonly Dictionary<Control, object?> OriginalValues = new();
 
         public AreaCommAdminWindow(Member member) {
             InitializeComponent();
             this.member = member;
-            this.Title = $"Flächenbindungen von {member.FamilyName} {member.GivenName} - Elwig";
-            RefreshAreaCommitmentList();
+            Title = $"Flächenbindungen - {member.FamilyName} {member.GivenName} - Elwig";
+            RefreshContractList();
         }
 
         private void Window_Loaded(object sender, RoutedEventArgs e) {
             KgInput.ItemsSource = Context.WbKgs.Select(k => k.Kg).OrderBy(k => k.Name).ToList();
             RdInput.ItemsSource = Context.WbRde.OrderBy(r => r.Name).ToList();
+            SortInput.ItemsSource = Context.WineVarieties.OrderBy(s => s.Name).ToList();
+            AttrInput.ItemsSource = Context.WineAttributes.OrderBy(a => a.Name).ToList();
+            CultInput.ItemsSource = Context.WineCultivations.OrderBy(c => c.Name).ToList();
         }
 
         private void RefreshAreaCommitmentList() {
+            Contract? contract = (Contract)ContractList.SelectedItem;
+            
+            if (contract == null) {
+                AreaCommitmentList.ItemsSource = null;
+                return;
+            }
+
             Context.AreaCommitments.Load();
-            List<AreaCommitment> commitments = Context.AreaCommitments.Where(a => a.Contract.MgNr == member.MgNr).ToList();
+            List<AreaCommitment> commitments = Context.AreaCommitments.Where(a => a.VNr == contract.VNr).ToList();
 
             AreaCommitmentList.ItemsSource = commitments;
             if (commitments.Count == 1)
                 AreaCommitmentList.SelectedIndex = 0;
         }
 
+        private void RefreshContractList() {
+            Context.Contracts.Load();
+            List<Contract> contracts = Context.Contracts.Where(c => c.MgNr == member.MgNr).ToList();
+
+            ContractList.ItemsSource = contracts;
+            if (contracts.Count == 1)
+                ContractList.SelectedIndex = 0;
+
+            RefreshAreaCommitmentList();
+        }
+
         private void RefreshInputs(bool validate = false) {
             ClearInputStates();
-            AreaCommitment a = (AreaCommitment)AreaCommitmentList.SelectedItem;
+            AreaCommitment? a = (AreaCommitment)AreaCommitmentList.SelectedItem;
             if (a != null) {
                 //EditMemberButton.IsEnabled = true;
                 //DeleteMemberButton.IsEnabled = true;
@@ -59,42 +75,25 @@ namespace Elwig.Windows {
         }
 
         private void FillInputs(AreaCommitment a) {
-            OriginalValues.Clear();
+            ClearOriginalValues();
+
+            VNr.Text = a.VNr.ToString();
+            MgNr.Text = a.Contract.MgNr.ToString();
+            YearFrom.Text = a.Contract.YearFrom.ToString();
+            YearTo.Text = a.Contract.YearTo.ToString();
 
             KgInput.SelectedItem = a.Kg.Kg;
             RdInput.SelectedItem = a.Rd;
             GstNr.Text = a.GstNr;
+            Area.Text = a.Area.ToString() + "m²";
+
+            SortInput.SelectedItem = a.WineVar;
+            AttrInput.SelectedItem = a.WineAttr;
+            CultInput.SelectedItem = a.WineCult;
 
             FillOriginalValues();
         }
 
-        private void FillOriginalValues() {
-            foreach (var tb in TextBoxInputs)
-                OriginalValues[tb] = tb.Text;
-            foreach (var cb in ComboBoxInputs)
-                OriginalValues[cb] = cb.SelectedItem;
-        }
-
-        private void ClearInputStates() {
-            foreach (var tb in TextBoxInputs)
-                Utils.ClearInputState(tb);
-            foreach (var cb in ComboBoxInputs)
-                Utils.ClearInputState(cb);
-        }
-
-        private void ClearInputs() {
-            OriginalValues.Clear();
-            foreach (var tb in TextBoxInputs) {
-                tb.Text = " ";
-                tb.Text = "";
-            }
-            foreach (var cb in ComboBoxInputs) {
-                cb.SelectedItem = null;
-                if (cb.ItemsSource != null)
-                    Utils.SetInputInvalid(cb);
-            }
-        }
-
         private void NewAreaCommitmentButton_Click(object sender, RoutedEventArgs evt) {
             IsCreating = true;
             AreaCommitmentList.IsEnabled = false;
@@ -123,7 +122,7 @@ namespace Elwig.Windows {
 
             var r = MessageBox.Show(
                 $"Soll die Flächenbindung \"{a.Kg.Kg.Name}, {a.Rd.Name}\", (MgNr. {a.GstNr}) wirklich unwiderruflich gelöscht werden?",
-                "Mitglied löschen", MessageBoxButton.YesNo, MessageBoxImage.Warning, MessageBoxResult.No);
+                "Flächenbindung löschen", MessageBoxButton.YesNo, MessageBoxImage.Warning, MessageBoxResult.No);
             if (r == MessageBoxResult.Yes) {
                 Context.Remove(a);
                 Context.SaveChanges();
@@ -131,13 +130,39 @@ namespace Elwig.Windows {
             }
         }
 
-        private void SaveButton_Click(object sender, RoutedEventArgs evt) {
+        private void NewContractButton_Click(object sender, RoutedEventArgs evt) {
+            IsCreating = true;
+            AreaCommitmentList.IsEnabled = false;
+            AreaCommitmentList.SelectedItem = null;
+            HideNewEditDeleteButtons();
+            ShowSaveResetCancelButtons();
+            UnlockInputs();
+            InitInputs();
+        }
+
+        private void DeleteContractButton_Click(object sender, RoutedEventArgs evt) {
+            Contract c = (Contract)ContractList.SelectedItem;
+            if (c == null) return;
+
+            var r = MessageBox.Show(
+                $"Soll der Vertrag \"{c.VNr} und alle enthaltenen Flächenbindungen wirklich unwiderruflich gelöscht werden?",
+                "Vertrag löschen", MessageBoxButton.YesNo, MessageBoxImage.Warning, MessageBoxResult.No);
+            if (r == MessageBoxResult.Yes) {
+                Context.Remove(c);
+                Context.SaveChanges();
+                RefreshAreaCommitmentList();
+            }
+        }
+
+        private void AreaCommitmentSaveButton_Click(object sender, RoutedEventArgs evt) {
             AreaCommitment? a = new();
             if (IsEditing)
                 a = (AreaCommitment)AreaCommitmentList.SelectedItem;
             else if (IsCreating)
                 a = new();
 
+            //TODO
+
             a.KgNr = ((AT_Kg)KgInput.SelectedItem).KgNr;
             a.RdNr = ((WbRd)RdInput.SelectedItem).RdNr;
             a.GstNr = GstNr.Text;
@@ -163,7 +188,7 @@ namespace Elwig.Windows {
             RefreshAreaCommitmentList();
         }
 
-        private void ResetButton_Click(object sender, RoutedEventArgs evt) {
+        private void AreaCommitmentResetButton_Click(object sender, RoutedEventArgs evt) {
             if (IsEditing) {
                 RefreshInputs();
             } else if (IsCreating) {
@@ -172,7 +197,7 @@ namespace Elwig.Windows {
             UpdateButtons();
         }
 
-        private void CancelButton_Click(object sender, RoutedEventArgs evt) {
+        private void AreaCommitmentCancelButton_Click(object sender, RoutedEventArgs evt) {
             IsEditing = false;
             IsCreating = false;
             AreaCommitmentList.IsEnabled = true;
@@ -183,69 +208,48 @@ namespace Elwig.Windows {
             LockInputs();
         }
 
-        private void LockInputs() {
-            foreach (var tb in TextBoxInputs)
-                tb.IsReadOnly = true;
-            foreach (var cb in ComboBoxInputs)
-                cb.IsEnabled = false;
+        private void ContractSaveButton_Click(object sender, RoutedEventArgs evt) {
+            //TODO
         }
 
-        private void UnlockInputs() {
-            foreach (var tb in TextBoxInputs)
-                tb.IsReadOnly = false;
-            foreach (var cb in ComboBoxInputs)
-                cb.IsEnabled = true;
+        private void ContractCancelButton_Click(object sender, RoutedEventArgs evt) {
+            IsEditing = false;
+            IsCreating = false;
+            ContractList.IsEnabled = true;
+            HideSaveResetCancelButtons();
+            ShowNewEditDeleteButtons();
+            RefreshInputs();
+            ClearInputStates();
+            LockInputs();
         }
 
-        private void UpdateButtons() {
+        override protected void UpdateButtons() {
             if (!IsEditing && !IsCreating) return;
             bool ch = HasChanged(), v = IsValid();
-            ResetButton.IsEnabled = (ch);
-            SaveButton.IsEnabled = (v && ch);
+            AreaCommitmentResetButton.IsEnabled = (ch);
+            AreaCommitmentSaveButton.IsEnabled = (v && ch);
         }
 
         private void InitInputs() {
             FillOriginalValues();
         }
 
-        private bool HasChanged() {
-            return !IsValid() ||
-                TextBoxInputs.Any(InputHasChanged) ||
-                ComboBoxInputs.Any(InputHasChanged);
-        }
-
-        private bool InputHasChanged(Control input) {
-            if (!OriginalValues.ContainsKey(input)) {
-                return false;
-            } else if (input is TextBox tb) {
-                return OriginalValues[tb]?.ToString() != tb.Text;
-            } else if (input is ComboBox sb) {
-                return OriginalValues[sb] != sb.SelectedItem;
-            } else {
-                return false;
-            }
-        }
-
-        private bool IsValid() {
-            return Valid.All(kv => kv.Value) && ComboBoxInputs.All(cb => cb.ItemsSource == null || cb.SelectedItem != null);
-        }
-
         private void ShowSaveResetCancelButtons() {
-            SaveButton.IsEnabled = false;
-            ResetButton.IsEnabled = false;
-            CancelButton.IsEnabled = true;
-            SaveButton.Visibility = Visibility.Visible;
-            ResetButton.Visibility = Visibility.Visible;
-            CancelButton.Visibility = Visibility.Visible;
+            AreaCommitmentSaveButton.IsEnabled = false;
+            AreaCommitmentResetButton.IsEnabled = false;
+            AreaCommitmentCancelButton.IsEnabled = true;
+            AreaCommitmentSaveButton.Visibility = Visibility.Visible;
+            AreaCommitmentResetButton.Visibility = Visibility.Visible;
+            AreaCommitmentCancelButton.Visibility = Visibility.Visible;
         }
 
         private void HideSaveResetCancelButtons() {
-            SaveButton.IsEnabled = false;
-            ResetButton.IsEnabled = false;
-            CancelButton.IsEnabled = false;
-            SaveButton.Visibility = Visibility.Hidden;
-            ResetButton.Visibility = Visibility.Hidden;
-            CancelButton.Visibility = Visibility.Hidden;
+            AreaCommitmentSaveButton.IsEnabled = false;
+            AreaCommitmentResetButton.IsEnabled = false;
+            AreaCommitmentCancelButton.IsEnabled = false;
+            AreaCommitmentSaveButton.Visibility = Visibility.Hidden;
+            AreaCommitmentResetButton.Visibility = Visibility.Hidden;
+            AreaCommitmentCancelButton.Visibility = Visibility.Hidden;
         }
 
         private void ShowNewEditDeleteButtons() {
@@ -266,6 +270,10 @@ namespace Elwig.Windows {
             DeleteAreaCommitmentButton.Visibility = Visibility.Hidden;
         }
 
+        private void ContractList_SelectionChanged(object sender, SelectionChangedEventArgs evt) {
+            RefreshAreaCommitmentList();
+        }
+
         private void AreaCommitmentList_SelectionChanged(object sender, SelectionChangedEventArgs evt) {
             RefreshInputs();
         }