From 6f4e3474b850120c0e2bb6a5fb35d5be35187468 Mon Sep 17 00:00:00 2001
From: Thomas Hilscher <thomas.hilscher@gmail.com>
Date: Mon, 4 Sep 2023 00:52:18 +0200
Subject: [PATCH] Add PaymentChartWindow

---
 Elwig/Dialogs/LinearPriceIncreaseDialog.xaml  |  53 ++
 .../Dialogs/LinearPriceIncreaseDialog.xaml.cs |  30 +
 Elwig/Elwig.csproj                            |   5 +-
 Elwig/Helpers/AppDbContext.cs                 |   1 +
 Elwig/Helpers/Utils.cs                        |   5 +
 Elwig/Models/Graph.cs                         | 123 +++
 Elwig/Models/PaymentVar.cs                    |  69 ++
 Elwig/Windows/ChartWindow.xaml                | 188 +++++
 Elwig/Windows/ChartWindow.xaml.cs             | 750 ++++++++++++++++++
 Elwig/Windows/MainWindow.xaml                 |   2 +
 Elwig/Windows/MainWindow.xaml.cs              |   5 +
 Elwig/Windows/TestWindow.xaml                 |   2 +
 Elwig/Windows/TestWindow.xaml.cs              |   5 +
 13 files changed, 1236 insertions(+), 2 deletions(-)
 create mode 100644 Elwig/Dialogs/LinearPriceIncreaseDialog.xaml
 create mode 100644 Elwig/Dialogs/LinearPriceIncreaseDialog.xaml.cs
 create mode 100644 Elwig/Models/Graph.cs
 create mode 100644 Elwig/Models/PaymentVar.cs
 create mode 100644 Elwig/Windows/ChartWindow.xaml
 create mode 100644 Elwig/Windows/ChartWindow.xaml.cs

diff --git a/Elwig/Dialogs/LinearPriceIncreaseDialog.xaml b/Elwig/Dialogs/LinearPriceIncreaseDialog.xaml
new file mode 100644
index 0000000..b6dd04a
--- /dev/null
+++ b/Elwig/Dialogs/LinearPriceIncreaseDialog.xaml
@@ -0,0 +1,53 @@
+<Window x:Class="Elwig.Dialogs.LinearPriceIncreaseDialog"
+        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.Dialogs"
+        mc:Ignorable="d"
+        ResizeMode="NoResize"
+        ShowInTaskbar="False"
+        Topmost="True"
+        WindowStartupLocation="CenterOwner"
+        FocusManager.FocusedElement="{Binding ElementName=PriceInput}"
+        Title="Linear wachsen" Height="140" Width="270">
+    <Window.Resources>
+        <Style TargetType="Label">
+            <Setter Property="HorizontalAlignment" Value="Left"/>
+            <Setter Property="VerticalAlignment" Value="Top"/>
+            <Setter Property="Padding" Value="2,4,2,4"/>
+            <Setter Property="Height" Value="25"/>
+        </Style>
+        <Style TargetType="TextBox">
+            <Setter Property="HorizontalAlignment" Value="Stretch"/>
+            <Setter Property="VerticalAlignment" Value="Top"/>
+            <Setter Property="FontSize" Value="14"/>
+            <Setter Property="Padding" Value="2"/>
+            <Setter Property="Height" Value="25"/>
+            <Setter Property="TextWrapping" Value="NoWrap"/>
+        </Style>
+        <Style TargetType="Button">
+            <Setter Property="HorizontalAlignment" Value="Right"/>
+            <Setter Property="VerticalAlignment" Value="Bottom"/>
+            <Setter Property="Width" Value="100"/>
+            <Setter Property="Height" Value="25"/>
+        </Style>
+    </Window.Resources>
+    <Grid>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="55"/>
+            <ColumnDefinition/>
+        </Grid.ColumnDefinitions>
+
+        <Label Content="Preis:" Margin="10,20,10,10"/>
+        <Grid Grid.Column="1" Width="145" Height="25" Margin="0,20,0,0" HorizontalAlignment="Left" VerticalAlignment="Top">
+            <TextBox x:Name="PriceInput" TextAlignment="Right" Padding="2,2,30,2"
+                     TextChanged="PriceInput_TextChanged"/>
+            <Label Content="€/kg" Margin="0,4,3,0" HorizontalAlignment="Right" FontSize="10" Padding="2,4,2,4"/>
+        </Grid>
+
+        <Button x:Name="ConfirmButton" Content="Bestätigen" Margin="17,0,133,10" IsEnabled="False" IsDefault="True"
+                Click="ConfirmButton_Click" Grid.ColumnSpan="2" HorizontalAlignment="Stretch"/>
+        <Button x:Name="CancelButton" Content="Abbrechen" Margin="0,0,20,10" Grid.Column="1" IsCancel="True"/>
+    </Grid>
+</Window>
diff --git a/Elwig/Dialogs/LinearPriceIncreaseDialog.xaml.cs b/Elwig/Dialogs/LinearPriceIncreaseDialog.xaml.cs
new file mode 100644
index 0000000..d782d6a
--- /dev/null
+++ b/Elwig/Dialogs/LinearPriceIncreaseDialog.xaml.cs
@@ -0,0 +1,30 @@
+using Elwig.Helpers;
+using System.Text.RegularExpressions;
+using System.Windows;
+using System.Windows.Controls;
+
+namespace Elwig.Dialogs {
+    public partial class LinearPriceIncreaseDialog : Window {
+
+        public double Price = 0.0;
+
+        public LinearPriceIncreaseDialog() {
+            InitializeComponent();
+        }
+
+        private void ConfirmButton_Click(object sender, RoutedEventArgs evt) {
+            DialogResult = true;
+            Price = double.Parse(PriceInput.Text.Replace("\u202f", ""));
+            Close();
+        }
+
+        private void UpdateButtons(ValidationResult res) {
+            ConfirmButton.IsEnabled = res.IsValid;
+        }
+
+        private void PriceInput_TextChanged(object sender, TextChangedEventArgs evt) {
+            var res = Validator.CheckDecimal(PriceInput, true, 2, 8);
+            UpdateButtons(res);
+        }
+    }
+}
diff --git a/Elwig/Elwig.csproj b/Elwig/Elwig.csproj
index d40916e..9c80baf 100644
--- a/Elwig/Elwig.csproj
+++ b/Elwig/Elwig.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
@@ -7,7 +7,7 @@
     <UseWPF>true</UseWPF>
     <PreserveCompilationContext>true</PreserveCompilationContext>
     <ApplicationIcon>elwig.ico</ApplicationIcon>
-    <Version>0.0.1</Version>
+    <Version>0.0.2</Version>
     <SatelliteResourceLanguages>de-AT</SatelliteResourceLanguages>
   </PropertyGroup>
 
@@ -25,6 +25,7 @@
     <PackageReference Include="PdfSharp" Version="1.50.5147" />
     <PackageReference Include="PuppeteerSharp" Version="11.0.2" />
     <PackageReference Include="RazorLight" Version="2.3.1" />
+    <PackageReference Include="ScottPlot.WPF" Version="4.1.67" />
     <PackageReference Include="System.IO.Ports" Version="7.0.0" />
     <PackageReference Include="System.Text.Encoding.CodePages" Version="7.0.0" />
   </ItemGroup>
diff --git a/Elwig/Helpers/AppDbContext.cs b/Elwig/Helpers/AppDbContext.cs
index c0ea1b1..2225e94 100644
--- a/Elwig/Helpers/AppDbContext.cs
+++ b/Elwig/Helpers/AppDbContext.cs
@@ -42,6 +42,7 @@ namespace Elwig.Helpers {
         public DbSet<DeliveryPart> DeliveryParts { get; private set; }
         public DbSet<DeliveryPartAttr> DeliveryPartAttributes { get; private set; }
         public DbSet<DeliveryPartModifier> DeliveryPartModifiers { get; private set; }
+        public DbSet<PaymentVar> PaymentVariants { get; private set; }
 
         private readonly StreamWriter? LogFile = null;
         public static DateTime LastWriteTime => File.GetLastWriteTime(App.Config.DatabaseFile);
diff --git a/Elwig/Helpers/Utils.cs b/Elwig/Helpers/Utils.cs
index e374648..5423d99 100644
--- a/Elwig/Helpers/Utils.cs
+++ b/Elwig/Helpers/Utils.cs
@@ -223,6 +223,11 @@ namespace Elwig.Helpers {
             return d.ShowDialog() == true ? d.Weight : null;
         }
 
+        public static double? ShowLinearPriceIncreaseDialog() {
+            var d = new LinearPriceIncreaseDialog();
+            return d.ShowDialog() == true ? d.Price : null;
+        }
+
         public static string? ShowDeliveryExtractionDialog(string lsnr, string name, bool single, IEnumerable<string> lsnrs) {
             var d = new DeliveryExtractionDialog(lsnr, name, single, lsnrs);
             return d.ShowDialog() == true ? d.AddTo : null;
diff --git a/Elwig/Models/Graph.cs b/Elwig/Models/Graph.cs
new file mode 100644
index 0000000..d87ea6d
--- /dev/null
+++ b/Elwig/Models/Graph.cs
@@ -0,0 +1,123 @@
+using Newtonsoft.Json.Linq;
+using ScottPlot;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics.Contracts;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Markup;
+
+namespace Elwig.Models {
+    public class Graph : ICloneable {
+
+        public string Type { get; set; }
+        public int Num { get; set; }
+        private int MinX { get; set; }
+        private int MaxX { get; set; }
+        public string Contracts { get; set; }
+        public double[] DataX { get; set; }
+        public double[] DataY { get; set; }
+
+        public Graph(int num, int minX, int maxX) {
+            Type = "oe";
+            Num = num;
+            Contracts = "";
+            MinX = minX;
+            MaxX = maxX;
+
+            DataX = DataGen.Range(MinX, MaxX + 1);
+            DataY = DataGen.Zeros(MaxX - MinX + 1);
+        }
+
+        public Graph(string type, int num, JToken graphData, string contracts, int minX, int maxX) {
+            Type = type;
+            Num = num;
+            Contracts =  contracts;
+            MinX = minX;
+            MaxX = maxX;
+
+            DataX = DataGen.Range(MinX, MaxX + 1);
+            DataY = DataGen.Zeros(MaxX - MinX + 1);
+            ParseGraphData(graphData);
+        }
+
+        public Graph(string type, int num, int minX, int maxX, string contracts, double[] dataX, double[] dataY) {
+            Type = type;
+            Num = num;
+            MinX = minX;
+            MaxX = maxX;
+            Contracts = contracts;
+            DataX = dataX;
+            DataY = dataY;
+        }
+
+        private void ParseGraphData(JToken graphData) {
+            var GraphPoints = graphData.Children().OfType<JProperty>().ToDictionary(p => int.Parse(p.Name[..^2]), p => (double)p.Value);
+
+            if (GraphPoints.Keys.Count < 1) {
+                return;
+            }
+
+            var minKey = GraphPoints.Keys.Order().First();
+            var maxKey = GraphPoints.Keys.OrderDescending().First();
+
+            if (!GraphPoints.ContainsKey(MinX)) {
+                GraphPoints.Add(MinX, GraphPoints.GetValueOrDefault(minKey));
+            }
+            if (!GraphPoints.ContainsKey(MaxX)) {
+                GraphPoints.Add(MaxX, GraphPoints.GetValueOrDefault(maxKey));
+            }
+
+            var keys = GraphPoints.Keys.Order().ToArray();
+
+            for (int i = 0; i < keys.Length; i++) {
+                double point1Value = GraphPoints[keys[i]];
+                if (i + 1 < keys.Length) {
+                    double point2Value = GraphPoints[keys[i + 1]];
+                    if (point1Value == point2Value) {
+                        for (int j = keys[i] - MinX; j < keys[i + 1] - MinX; j++) {
+                            DataY[j] = point1Value;
+                        }
+                    } else {
+                        int steps = Math.Abs(keys[i + 1] - keys[i]);
+                        double step = (point2Value - point1Value) / steps;
+
+                        DataY[keys[i] - MinX] = point1Value;
+                        DataY[keys[i + 1] - MinX] = point2Value;
+
+                        for (int j = keys[i] - MinX; j < keys[i + 1] - MinX - 1; j++) {
+                            DataY[j + 1] = Math.Round(DataY[j] + step, 4); // TODO richtig runden
+                        }
+                    }
+                }
+                else {
+                    for (int j = keys[i] - MinX; j < DataX.Length; j++) {
+                        DataY[j] = point1Value;
+                    }
+                }
+            }
+        }
+
+        public JObject ToJson() {
+            JObject graph = new();
+
+            if (DataY[0] != DataY[1]) {
+                graph.Add(new JProperty(DataX[0] + Type.ToLower(), Math.Round(DataY[0], 4)));
+            }
+            for (int i = 1; i < DataX.Length - 1; i++) {
+                if (Math.Round(DataY[i] - DataY[i - 1], 4) != Math.Round(DataY[i + 1] - DataY[i], 4)) {
+                    graph.Add(new JProperty(DataX[i] + Type.ToLower(), Math.Round(DataY[i], 4)));
+                }
+            }
+            if (DataY[^1] != DataY[^2]) {
+                graph.Add(new JProperty(DataX[^1] + Type.ToLower(), Math.Round(DataY[^1], 4)));
+            }
+            return graph;
+        }
+
+        public object Clone() {
+            return new Graph(Type, Num, MinX, MaxX, Contracts, (double[])DataX.Clone(), (double[])DataY.Clone());
+        }
+    }
+}
diff --git a/Elwig/Models/PaymentVar.cs b/Elwig/Models/PaymentVar.cs
new file mode 100644
index 0000000..689b6ca
--- /dev/null
+++ b/Elwig/Models/PaymentVar.cs
@@ -0,0 +1,69 @@
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Elwig.Models {
+    [Table("payment_variant"), PrimaryKey("Year", "AvNr")]
+    public class PaymentVar {
+        [Column("year")]
+        public int Year { get; set; }
+
+        [Column("avnr")]
+        public int AvNr { get; set; }
+
+        [Column("name")]
+        public string Name { get; set; }
+
+        [Column("date")]
+        public string DateString { get; set; }
+
+        [NotMapped]
+        public DateOnly Date {
+            get {
+                return DateOnly.ParseExact(DateString, "yyyy-MM-dd");
+            }
+            set {
+                DateString = value.ToString("yyyy-MM-dd");
+            }
+        }
+
+        [Column("test_variant")]
+        public bool TestVariant { get; set; }
+
+        [Column("calc_time")]
+        public int? CalcTime { get; set; }
+
+        [Column("bucket_1_name")]
+        public string? Bucket1Name { get; set; }
+
+        [Column("bucket_2_name")]
+        public string? Bucket2Name { get; set; }
+
+        [Column("bucket_3_name")]
+        public string? Bucket3Name { get; set; }
+
+        [Column("bucket_4_name")]
+        public string? Bucket4Name { get; set; }
+
+        [Column("bucket_5_name")]
+        public string? Bucket5Name { get; set; }
+
+        [Column("bucket_6_name")]
+        public string? Bucket6Name { get; set; }
+
+        [Column("bucket_7_name")]
+        public string? Bucket7Name { get; set; }
+
+        [Column("bucket_8_name")]
+        public string? Bucket8Name { get; set; }
+
+        [Column("bucket_9_name")]
+        public string? Bucket9Name { get; set; }
+
+        [Column("comment")]
+        public string? Comment { get; set; }
+
+        [Column("data")]
+        public string Data { get; set; }
+    }
+}
diff --git a/Elwig/Windows/ChartWindow.xaml b/Elwig/Windows/ChartWindow.xaml
new file mode 100644
index 0000000..c6515b1
--- /dev/null
+++ b/Elwig/Windows/ChartWindow.xaml
@@ -0,0 +1,188 @@
+<local:AdministrationWindow x:Class="Elwig.Windows.ChartWindow"
+        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"
+        xmlns:xctk="http://schemas.xceed.com/wpf/xaml/toolkit"
+        xmlns:ScottPlot="clr-namespace:ScottPlot;assembly=ScottPlot.WPF"
+        mc:Ignorable="d"
+        Title="Auszahlung - Elwig" Height="700" Width="1500"
+        Loaded="Window_Loaded">
+
+    <Window.Resources>
+        <Style TargetType="Label">
+            <Setter Property="HorizontalAlignment" Value="Left"/>
+            <Setter Property="VerticalAlignment" Value="Top"/>
+            <Setter Property="Padding" Value="2,4,2,4"/>
+            <Setter Property="Height" Value="25"/>
+        </Style>
+        <Style TargetType="TextBox">
+            <Setter Property="HorizontalAlignment" Value="Stretch"/>
+            <Setter Property="VerticalAlignment" Value="Top"/>
+            <Setter Property="FontSize" Value="14"/>
+            <Setter Property="Padding" Value="2"/>
+            <Setter Property="IsReadOnly" Value="True"/>
+            <Setter Property="Height" Value="25"/>
+            <Setter Property="TextWrapping" Value="NoWrap"/>
+        </Style>
+        <Style TargetType="ComboBox">
+            <Setter Property="IsEnabled" Value="False"/>
+            <Setter Property="Height" Value="25"/>
+            <Setter Property="FontSize" Value="14"/>
+            <Setter Property="HorizontalAlignment" Value="Stretch"/>
+            <Setter Property="VerticalAlignment" Value="Top"/>
+        </Style>
+        <Style TargetType="Button">
+            <Setter Property="FontSize" Value="14"/>
+            <Setter Property="Padding" Value="9,3"/>
+            <Setter Property="Height" Value="27"/>
+        </Style>
+    </Window.Resources>
+
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="19"/>
+            <RowDefinition Height="*"/>
+        </Grid.RowDefinitions>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="330"/>
+            <ColumnDefinition Width="1*"/>
+            <ColumnDefinition Width="200"/>
+        </Grid.ColumnDefinitions>
+
+        <Grid Grid.Row="1" Margin="5,0,0,0">
+            <Grid.RowDefinitions>
+                <RowDefinition Height="*"/>
+                <RowDefinition Height="42"/>
+            </Grid.RowDefinitions>
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="*"/>
+                <ColumnDefinition Width="*"/>
+                <ColumnDefinition Width="*"/>
+            </Grid.ColumnDefinitions>
+            
+            <DataGrid x:Name="GraphList" AutoGenerateColumns="False" HeadersVisibility="Column" IsReadOnly="True" GridLinesVisibility="None" SelectionMode="Single"
+                      CanUserDeleteRows="False" CanUserResizeRows="False" CanUserAddRows="False"
+                      SelectionChanged="GraphList_SelectionChanged"
+                      Margin="5,15,5,0" Grid.Row="0" FontSize="14" Grid.ColumnSpan="3">
+                <DataGrid.Columns>
+                    <DataGridTextColumn Header="Nr."    Binding="{Binding Num}"       Width="40">
+                        <DataGridTextColumn.ElementStyle>
+                            <Style>
+                                <Setter Property="TextBlock.TextWrapping" Value="Wrap" />
+                            </Style>
+                        </DataGridTextColumn.ElementStyle>
+                    </DataGridTextColumn>
+                    <DataGridTextColumn Header="Typ"    Binding="{Binding Type}"       Width="40"/>
+                    <DataGridTextColumn Header="Angewandte Verträge" Binding="{Binding Contracts}" Width="4*"/>
+                </DataGrid.Columns>
+            </DataGrid>
+
+            <Button x:Name="NewButton" Content="Neu"
+                    HorizontalAlignment="Stretch" VerticalAlignment="Bottom" Margin="5,5,2.5,10" Grid.Column="0" Grid.Row="2"
+                    Click="NewButton_Click"/>
+            <Button x:Name="EditButton" Content="Bearbeiten" IsEnabled="False"
+                    HorizontalAlignment="Stretch" VerticalAlignment="Bottom" Margin="2.5,5,2.5,10" Grid.Column="1" Grid.Row="2"
+                    Click="EditButton_Click"/>
+            <Button x:Name="DeleteButton" Content="Löschen" IsEnabled="False"
+                    HorizontalAlignment="Stretch" VerticalAlignment="Bottom" Margin="2.5,5,5,10" Grid.Column="2" Grid.Row="2"
+                    Click="DeleteButton_Click"/>
+
+            <Button x:Name="SaveButton" Content="Speichern" IsEnabled="False" Visibility="Hidden"
+                    HorizontalAlignment="Stretch" VerticalAlignment="Bottom" Margin="5,5,2.5,10" Grid.Column="0" Grid.Row="2"
+                    Click="SaveButton_Click"/>
+            <Button x:Name="ResetButton" Content="Zurücksetzen" IsEnabled="False" Visibility="Hidden"
+                    HorizontalAlignment="Stretch" VerticalAlignment="Bottom" Margin="2.5,5,2.5,10" Grid.Column="1" Grid.Row="2"
+                    Click="ResetButton_Click"/>
+            <Button x:Name="CancelButton" Content="Abbrechen" IsEnabled="False" Visibility="Hidden" IsCancel="True"
+                    HorizontalAlignment="Stretch" VerticalAlignment="Bottom" Margin="2.5,5,5,10" Grid.Column="2" Grid.Row="2"
+                    Click="CancelButton_Click"/>
+        </Grid>
+
+        <Grid Grid.Row="1" Grid.Column="1">
+            <ScottPlot:WpfPlot x:Name="OechslePricePlot" MouseMove="OechslePricePlot_MouseMove" MouseDown="OechslePricePlot_MouseDown" IsEnabled="False"/>
+        </Grid>
+
+        <Grid Grid.Row="1" Grid.Column="2" Margin="0,0,5,0">
+            <Grid.RowDefinitions>
+                <RowDefinition Height="120"/>
+                <RowDefinition Height="120"/>
+                <RowDefinition Height="210"/>
+                <RowDefinition Height="110"/>
+                <RowDefinition Height="42"/>
+            </Grid.RowDefinitions>
+
+            <GroupBox Header="Graph" Grid.Row="0" Margin="0,5,5,5">
+                <Grid>
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition Width="85"/>
+                        <ColumnDefinition Width="*"/>
+                    </Grid.ColumnDefinitions>
+
+                    <Label Content="Nummer:" Margin="10,10,0,0" Grid.Column="0"/>
+                    <TextBox x:Name="GraphNumberInput" Grid.Column="1" HorizontalAlignment="Left" Margin="0,10,0,0" Text="" Width="90" TextChanged="GraphNumberInput_TextChanged" LostFocus="GraphNumberInput_LostFocus"/>
+
+                    <Label Content="Typ:" Margin="10,45,0,0" Grid.Column="0"/>
+                    <RadioButton x:Name="OechsleGraphType_Input" GroupName="GraphType" Grid.Column="1" Margin="0,45,0,0">Oechsle</RadioButton>
+                    <RadioButton x:Name="KmwGraphType_Input" GroupName="GraphType" Grid.Column="1" Margin="0,60,0,0">KMW</RadioButton>
+                </Grid>
+            </GroupBox>
+
+            <GroupBox Header="Datenpunkt" Grid.Row="1" Margin="0,5,5,5">
+                <Grid>
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition Width="85"/>
+                        <ColumnDefinition Width="*"/>
+                    </Grid.ColumnDefinitions>
+
+                    <Label Content="Oechsle:" Margin="10,10,0,0" Grid.Column="0"/>
+                    <TextBox x:Name="OechsleInput" Grid.Column="1" HorizontalAlignment="Left" Margin="0,10,0,0" Text="" Width="90" TextChanged="OechsleInput_TextChanged" LostFocus="OechsleInput_LostFocus"/>
+
+                    <Label Content="Preis pro kg:" Margin="10,40,0,0" Grid.Column="0"/>
+                    <TextBox x:Name="PriceInput" Grid.Column="1" HorizontalAlignment="Left" Margin="0,40,0,0" Text="" Width="90" TextChanged="PriceInput_TextChanged" LostFocus="PriceInput_LostFocus"/>
+
+                </Grid>
+            </GroupBox>
+
+            <GroupBox Header="Aktionen" Grid.Row="2" Margin="0,5,5,5">
+                <Grid>
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition Width="*"/>
+                    </Grid.ColumnDefinitions>
+
+                    <Button x:Name="LeftFlatButton" Content="Links flach" Click="LeftFlatButton_Click" IsEnabled="False"
+                            HorizontalAlignment="Stretch" VerticalAlignment="Top" Margin="10,10,10,10"/>
+
+                    <Button x:Name="RightFlatButton" Content="Rechts flach" Click="RightFlatButton_Click" IsEnabled="False"
+                            HorizontalAlignment="Stretch" VerticalAlignment="Top" Margin="10,50,10,10"/>
+
+                    <Button x:Name="InterpolateButton" Content="Interpolieren" Click="InterpolateButton_Click" IsEnabled="False"
+                            HorizontalAlignment="Stretch" VerticalAlignment="Top" Margin="10,90,10,10"/>
+
+                    <Button x:Name="LinearIncreaseButton" Content="Linear wachsen" Click="LinearIncreaseButton_Click" IsEnabled="False"
+                            HorizontalAlignment="Stretch" VerticalAlignment="Top" Margin="10,130,10,10"/>
+                </Grid>
+            </GroupBox>
+
+            <GroupBox Header="Optionen" Grid.Row="3" Margin="0,5,5,5">
+                <Grid>
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition Width="*"/>
+                    </Grid.ColumnDefinitions>
+
+                    <CheckBox x:Name="FreeZoomInput" Content="Freier Zoom" IsEnabled="False"
+                            Checked="FreeZoomInput_Changed" Unchecked="FreeZoomInput_Changed"
+                            HorizontalAlignment="Left" Margin="10,10,10,0" VerticalAlignment="Top"/>
+
+                    <CheckBox x:Name="GradationLinesInput" Content="Gradationslinien anzeigen" IsEnabled="False"
+                            Checked="GradationLinesInput_Changed" Unchecked="GradationLinesInput_Changed"
+                            HorizontalAlignment="Left" Margin="10,30,10,0" VerticalAlignment="Top" IsChecked="True"/>
+
+                    <CheckBox x:Name="TooltipInput" Content="Tooltips anzeigen" IsEnabled="False"
+                            HorizontalAlignment="Left" Margin="10,50,10,0" VerticalAlignment="Top" IsChecked="True"/>
+                </Grid>
+            </GroupBox>
+        </Grid>
+    </Grid>
+</local:AdministrationWindow>
diff --git a/Elwig/Windows/ChartWindow.xaml.cs b/Elwig/Windows/ChartWindow.xaml.cs
new file mode 100644
index 0000000..9010918
--- /dev/null
+++ b/Elwig/Windows/ChartWindow.xaml.cs
@@ -0,0 +1,750 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Diagnostics;
+using System.Diagnostics.Contracts;
+using System.Drawing;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using Elwig.Helpers;
+using Elwig.Models;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.ChangeTracking;
+using Newtonsoft.Json.Linq;
+using ScottPlot;
+using ScottPlot.Plottable;
+
+namespace Elwig.Windows {
+    public partial class ChartWindow : AdministrationWindow {
+
+        private readonly int Year = 2021;
+        private readonly int AvNr = 2;
+
+        private ScatterPlot OechslePricePlotScatter;
+        private MarkerPlot HighlightedPoint;
+        private MarkerPlot PrimaryMarkedPoint;
+        private MarkerPlot SecondaryMarkedPoint;
+        private Tooltip Tooltip;
+
+        private int LastHighlightedIndex = -1;
+        private int HighlightedIndex = -1;
+        private int PrimaryMarkedPointIndex = -1;
+        private int SecondaryMarkedPointIndex = -1;
+        private bool HoverChanged = false;
+        private bool HoverActive = false;
+
+        private const int MinOechsle = 50;
+        private const int MaxOechsle = 140;
+
+        private Graph? Graph;
+
+        public ChartWindow() {
+            InitializeComponent();
+
+            ExemptInputs = new Control[] {
+                GraphList, OechsleInput, PriceInput, FreeZoomInput, GradationLinesInput, TooltipInput
+            };
+        }
+
+        private void Window_Loaded(object sender, RoutedEventArgs evt) {
+            LockInputs();
+            OechslePricePlot.IsEnabled = false;
+        }
+
+        private async Task RefreshGraphList() {
+            await Context.PaymentVariants.LoadAsync();
+            await RefreshGraphListQuery();
+        }
+
+        private async Task RefreshGraphListQuery(bool updateSort = false) {
+            List<PaymentVar> paymentVars = await Context.PaymentVariants.Where(p => p.Year == Year && p.AvNr == AvNr).ToListAsync();
+
+            if (paymentVars.Count != 1) {
+                return;
+            }
+
+            PaymentVar paymentVar = paymentVars[0];
+            var data = JToken.Parse(paymentVar.Data);
+
+            var auszahlungsSorten = data["AuszahlungSorten"];
+            if (auszahlungsSorten == null) {
+                return;
+            }
+
+            var Graphs = auszahlungsSorten["Kurven"];
+
+            if (Graphs == null) {
+                return;
+            }
+
+            List<Graph> GraphsList = new();
+
+            int i = 1;
+            foreach (var graph in Graphs) {
+                GraphsList.Add(new Graph("Oe", i, graph, ParseContracts(auszahlungsSorten, i - 1), 50, 140));
+                i++;
+            }
+
+            ControlUtils.RenewItemsSource(GraphList, GraphsList, g => (g as Graph)?.Num);
+            if (GraphsList.Count == 1) {
+                GraphList.SelectedIndex = 0;
+            }
+
+            RefreshInputs();
+        }
+
+        private String ParseContracts(JToken auszahlungsSorten, int num) {
+            List<string> contracts = new();
+
+            foreach (var sorte in auszahlungsSorten.Children().OfType<JToken>()) {
+                if (((JProperty)sorte).Name == "Kurven") {
+                    continue;
+                }
+                foreach (var attribut in sorte.Values().OfType<JToken>()) {
+                    foreach (var bindung in attribut.Values().OfType<JProperty>()) {
+                        if ((int)(bindung).Value == num) {
+                            contracts.Add($"{((JProperty)sorte).Name}/{((JProperty)attribut).Name}/{bindung.Name}");
+                        }
+                    }
+                }
+            }
+
+            return string.Join("\n", contracts.ToArray());
+        }
+
+        private async Task<bool> RemoveGraph(int num) {
+            List<PaymentVar> paymentVars = await Context.PaymentVariants.Where(p => p.Year == Year && p.AvNr == AvNr).ToListAsync();
+
+            if (paymentVars.Count != 1) {
+                return false;
+            }
+
+            PaymentVar paymentVar = paymentVars[0];
+            var data = JToken.Parse(paymentVar.Data);
+
+            var auszahlungsSorten = data["AuszahlungSorten"];
+            if (auszahlungsSorten == null) {
+                return false;
+            }
+
+            var Graphs = auszahlungsSorten["Kurven"];
+
+            if (Graphs == null) {
+                return false;
+            }
+
+            int i = 1;
+            foreach (var graph in Graphs) {
+                if (i == num) {
+                    graph.Remove();
+                    break;
+                }
+                i++;
+            }
+
+            foreach (var sorte in auszahlungsSorten.Children().OfType<JToken>()) {
+                if (((JProperty)sorte).Name == "Kurven") {
+                    continue;
+                }
+                foreach (var attribut in sorte.Values().OfType<JToken>()) {
+                    List<JProperty> itemsToRemove = new();
+                    foreach (var bindung in attribut.Values().OfType<JProperty>()) {
+                        if ((int)bindung.Value == num - 1) {
+                            itemsToRemove.Add(bindung);
+                        } else if ((int)bindung.Value > num - 1) {
+                            bindung.Value = (int)bindung.Value - 1;
+                        }
+                    }
+                    itemsToRemove.ForEach(i => i.Remove());
+                }
+            }
+
+            EntityEntry<PaymentVar>? tr = null;
+            try {
+                paymentVar.Data = data.ToString();
+                tr = Context.Update(paymentVar);
+
+                await Context.SaveChangesAsync();
+            } catch (Exception exc) {
+                if (tr != null) await tr.ReloadAsync();
+                var str = "Der Eintrag konnte nicht in der Datenbank gelöscht werden!\n\n" + exc.Message;
+                if (exc.InnerException != null) str += "\n\n" + exc.InnerException.Message;
+                MessageBox.Show(str, "Graph löschen", MessageBoxButton.OK, MessageBoxImage.Error);
+            }
+
+            return true;
+        }
+
+        private void RefreshInputs(bool validate = false) {
+            ResetPlot();
+            ClearInputStates();
+            if (GraphList.SelectedItem is Graph g) {
+                EditButton.IsEnabled = true;
+                DeleteButton.IsEnabled = true;
+                EnableOptionButtons();
+                FillInputs(g);
+            } else {
+                EditButton.IsEnabled = false;
+                DeleteButton.IsEnabled = false;
+                DisableOptionButtons();
+                ClearOriginalValues();
+                ClearInputs(validate);
+                ClearInputStates();
+            }
+            GC.Collect();
+        }
+
+        private void FillInputs(Graph g) {
+            ClearOriginalValues();
+
+            Graph = (Graph)g.Clone();
+            
+            GraphNumberInput.Text = Graph.Num.ToString();
+            if (Graph.Type == "oe") {
+                OechsleGraphType_Input.IsChecked = true;
+            } else if (Graph.Type == "kmw") {
+                KmwGraphType_Input.IsChecked = true;
+            }
+
+            InitPlot();
+            OechslePricePlot.IsEnabled = true;
+
+            FinishInputFilling();
+        }
+
+        private void InitInputs() {
+            GraphNumberInput.Text = (GraphList.Items.Count + 1).ToString();
+            OechsleGraphType_Input.IsChecked = true;
+            FinishInputFilling();
+        }
+
+        protected override async Task RenewContext() {
+            await base.RenewContext();
+            await RefreshGraphList();
+        }
+
+        private void InitPlot() {
+            OechslePricePlotScatter = OechslePricePlot.Plot.AddScatter(Graph.DataX, Graph.DataY);
+
+            OechslePricePlotScatter.LineColor = Color.Blue;
+            OechslePricePlotScatter.MarkerColor = Color.Blue;
+            OechslePricePlotScatter.MarkerSize = 9;
+
+            //OechslePricePlot.Plot.XAxis.ManualTickSpacing(1);
+            OechslePricePlot.Plot.YAxis.ManualTickSpacing(0.1);
+            OechslePricePlot.Plot.SetAxisLimits(MinOechsle - 1, MaxOechsle + 1, -0.1, 2);
+            
+            OechslePricePlot.Plot.Layout(padding: 0);
+            OechslePricePlot.Plot.XAxis2.Layout(padding: 0);
+            OechslePricePlot.Plot.YAxis.Layout(padding: 0);
+            OechslePricePlot.Plot.YAxis2.Layout(padding: 0);
+
+            HighlightedPoint = OechslePricePlot.Plot.AddPoint(0, 0);
+            HighlightedPoint.Color = Color.Red;
+            HighlightedPoint.MarkerSize = 10;
+            HighlightedPoint.MarkerShape = MarkerShape.openCircle;
+            HighlightedPoint.IsVisible = false;
+
+            PrimaryMarkedPoint = OechslePricePlot.Plot.AddPoint(0, 0);
+            PrimaryMarkedPoint.Color = Color.Red;
+            PrimaryMarkedPoint.MarkerSize = 6;
+            PrimaryMarkedPoint.MarkerShape = MarkerShape.filledCircle;
+            PrimaryMarkedPoint.IsVisible = false;
+
+            SecondaryMarkedPoint = OechslePricePlot.Plot.AddPoint(0, 0);
+            SecondaryMarkedPoint.Color = Color.Red;
+            SecondaryMarkedPoint.MarkerSize = 6;
+            SecondaryMarkedPoint.MarkerShape = MarkerShape.filledCircle;
+            SecondaryMarkedPoint.IsVisible = false;
+
+            OechslePricePlot.Refresh();
+
+            RefreshFreeZoom();
+            RefreshGradationLines();
+        }
+
+        private void ResetPlot() {
+            Graph = null;
+            PrimaryMarkedPointIndex = -1;
+            OechslePricePlot.Plot.Remove(OechslePricePlotScatter);
+            OechslePricePlot.Plot.Clear();
+            OechslePricePlot.Reset();
+            OechslePricePlot.Refresh();
+        }
+
+        private void ChangeMarker(MarkerPlot point, bool visible, double x = 0, double y = 0) {
+            point.X = x;
+            point.Y = y;
+            point.IsVisible = visible;
+        }
+
+        private void FlattenGraph(int begin, int end, double value) {
+            for (int i = begin; i <= end; i++) {
+                Graph.DataY[i] = value;
+            }
+            OechslePricePlot.Render();
+        }
+
+        private void LinearIncreaseGraph(int begin, int end, double inc) {
+            for (int i = begin; i < end; i++) {
+                Graph.DataY[i + 1] = Graph.DataY[i] + inc;
+            }
+            OechslePricePlot.Render();
+        }
+
+        private void EnableActionButtons() {
+            LeftFlatButton.IsEnabled = true; 
+            RightFlatButton.IsEnabled = true; 
+            LinearIncreaseButton.IsEnabled = true;
+        }
+
+        private void DisableActionButtons() {
+            LeftFlatButton.IsEnabled = false;
+            RightFlatButton.IsEnabled = false;
+            InterpolateButton.IsEnabled = false;
+            LinearIncreaseButton.IsEnabled = false;
+        }
+
+        private void FreeZoomInput_Changed(object sender, RoutedEventArgs evt) {
+            RefreshFreeZoom();
+        }
+
+        private void RefreshFreeZoom() {
+            if (FreeZoomInput.IsChecked == true) {
+                UnlockZoom();
+            } else {
+                LockZoom();
+            }
+            OechslePricePlot.Refresh();
+        }
+
+        private void LockZoom() {
+            OechslePricePlot.Plot.XAxis.SetBoundary(MinOechsle - 1, MaxOechsle + 1);
+            OechslePricePlot.Plot.YAxis.SetBoundary(-0.1, 2);
+            OechslePricePlot.Plot.XAxis.SetZoomOutLimit(MaxOechsle - MinOechsle + 2);
+            OechslePricePlot.Plot.YAxis.SetZoomOutLimit(2.1);
+            OechslePricePlot.Plot.SetAxisLimits(MinOechsle - 1, MaxOechsle + 1, -0.1, 2);
+        }
+
+        private void UnlockZoom() {
+            OechslePricePlot.Plot.XAxis.SetBoundary();
+            OechslePricePlot.Plot.YAxis.SetBoundary();
+            OechslePricePlot.Plot.XAxis.SetZoomOutLimit((MaxOechsle - MinOechsle) * 1.5);
+            OechslePricePlot.Plot.YAxis.SetZoomOutLimit(3.5);
+        }
+
+        private void EnableOptionButtons() {
+            FreeZoomInput.IsEnabled = true;
+            GradationLinesInput.IsEnabled = true;
+            TooltipInput.IsEnabled = true;
+        }
+
+        private void DisableOptionButtons() {
+            FreeZoomInput.IsEnabled = false;
+            GradationLinesInput.IsEnabled = false;
+            TooltipInput.IsEnabled = false;
+        }
+
+        private void GradationLinesInput_Changed(object sender, RoutedEventArgs evt) {
+            RefreshGradationLines();
+        }
+
+        private void RefreshGradationLines() {
+            if (GradationLinesInput.IsChecked == true) {
+                ShowGradationLines();
+                ShowLegend();
+            } else {
+                HideGradationLines();
+                HideLegend();
+            }
+            OechslePricePlot.Refresh();
+        }
+
+        private void ShowGradationLines() {
+            OechslePricePlot.Plot.AddVerticalLine(68, Color.Red, 2, label: "68 Oechsle (LDW)");
+            OechslePricePlot.Plot.AddVerticalLine(73, Color.Orange, 2, label: "73 Oechsle (QUW)");
+            OechslePricePlot.Plot.AddVerticalLine(84, Color.Green, 2, label: "84 Oechsle (KAB)");
+        }
+
+        private void HideGradationLines() {
+            OechslePricePlot.Plot.Clear(typeof(VLine));
+        }
+
+        private void ShowLegend() {
+            OechslePricePlot.Plot.Legend(true, Alignment.UpperRight);
+        }
+
+        private void HideLegend() {
+            OechslePricePlot.Plot.Legend(false, Alignment.UpperRight);
+        }
+
+        private void OechsleInput_TextChanged(object sender, RoutedEventArgs evt) {
+            IntegerInput_TextChanged(sender, evt);
+
+            bool success = int.TryParse(OechsleInput.Text, out int oechsle);
+
+            SecondaryMarkedPointIndex = -1;
+            ChangeMarker(SecondaryMarkedPoint, false);
+
+            if (success) {
+                if (oechsle >= MinOechsle && oechsle <= MaxOechsle) {
+                    PrimaryMarkedPointIndex = oechsle - MinOechsle;
+                    ChangeMarker(PrimaryMarkedPoint, true, Graph.DataX[PrimaryMarkedPointIndex], Graph.DataY[PrimaryMarkedPointIndex]);
+
+                    PriceInput.Text = Graph.DataY[PrimaryMarkedPointIndex].ToString();
+
+                    EnableActionButtons();
+                    OechslePricePlot.Render();
+                    return;
+                }
+            }
+
+            PrimaryMarkedPointIndex = -1;
+            ChangeMarker(PrimaryMarkedPoint, false);
+            DisableActionButtons();
+            PriceInput.Text = "";
+            OechslePricePlot.Render();
+        }
+
+        private void PriceInput_TextChanged(object sender, RoutedEventArgs evt) {
+            if (PrimaryMarkedPointIndex != -1) {
+                bool success = Double.TryParse(PriceInput.Text, out double price);
+
+                if (success) {
+                    Graph.DataY[PrimaryMarkedPointIndex] = price;
+                    PrimaryMarkedPoint.Y = price;
+                    SaveButton.IsEnabled = true;
+                    ResetButton.IsEnabled = true;
+                    OechslePricePlot.Refresh();
+                }
+            }
+        }
+
+        private void LeftFlatButton_Click(object sender, RoutedEventArgs evt) {
+            if (PrimaryMarkedPointIndex == -1) {
+                return;
+            }
+            FlattenGraph(0, PrimaryMarkedPointIndex, Graph.DataY[PrimaryMarkedPointIndex]);
+        }
+
+        private void RightFlatButton_Click(object sender, RoutedEventArgs evt) {
+            if (PrimaryMarkedPointIndex == -1) {
+                return;
+            }
+            FlattenGraph(PrimaryMarkedPointIndex, Graph.DataY.Length - 1, Graph.DataY[PrimaryMarkedPointIndex]);
+        }
+
+        private void InterpolateButton_Click(object sender, RoutedEventArgs evt) {
+            int steps = Math.Abs(PrimaryMarkedPointIndex - SecondaryMarkedPointIndex);
+            if (PrimaryMarkedPointIndex == -1 || SecondaryMarkedPointIndex == -1 || steps < 2) {
+                return;
+            }
+            var (lowIndex, highIndex) = PrimaryMarkedPointIndex < SecondaryMarkedPointIndex ? (PrimaryMarkedPointIndex, SecondaryMarkedPointIndex): (SecondaryMarkedPointIndex, PrimaryMarkedPointIndex);
+
+            double step = (Graph.DataY[highIndex] - Graph.DataY[lowIndex]) / steps;
+
+            for (int i = lowIndex; i < highIndex - 1; i++) {
+                Graph.DataY[i + 1] = Math.Round(Graph.DataY[i] + step, 4); // TODO richtig runden
+            }
+        }
+
+        private void LinearIncreaseButton_Click(object sender, RoutedEventArgs e) { 
+            if (PrimaryMarkedPointIndex == -1) {
+                return;
+            }
+            double? priceIncrease = Utils.ShowLinearPriceIncreaseDialog();
+            if (priceIncrease == null) {
+                return;
+            }
+            LinearIncreaseGraph(PrimaryMarkedPointIndex, Graph.DataY.Length - 1, priceIncrease.Value);
+        }
+
+        private void OechslePricePlot_MouseDown(object sender, MouseEventArgs e) {
+            if (!IsCreating && GraphList.SelectedItem == null) {
+                return;
+            }
+
+            if (HoverActive) {
+                if ((IsEditing || IsCreating) && Keyboard.IsKeyDown(Key.LeftCtrl)) {
+                    if (PrimaryMarkedPointIndex == -1) {
+                        return;
+                    }
+                    SecondaryMarkedPointIndex = HighlightedIndex;
+                    ChangeMarker(SecondaryMarkedPoint, true, Graph.DataX[SecondaryMarkedPointIndex], Graph.DataY[SecondaryMarkedPointIndex]);
+
+                    InterpolateButton.IsEnabled = true;
+
+                    return;
+                }
+
+                PrimaryMarkedPointIndex = HighlightedIndex;
+                ChangeMarker(PrimaryMarkedPoint, true, Graph.DataX[PrimaryMarkedPointIndex], Graph.DataY[PrimaryMarkedPointIndex]);
+
+                OechsleInput.Text = Graph.DataX[HighlightedIndex].ToString();
+                PriceInput.Text = Graph.DataY[HighlightedIndex].ToString();
+
+                if (IsEditing || IsCreating) {
+                    EnableActionButtons();
+                }
+            } else {
+                PrimaryMarkedPointIndex = -1;
+                SecondaryMarkedPointIndex = -1;
+                ChangeMarker(PrimaryMarkedPoint, false);
+                ChangeMarker(SecondaryMarkedPoint, false);
+
+                OechsleInput.Text = "";
+                PriceInput.Text = "";
+
+                DisableActionButtons();
+            }
+        }
+
+        private void OechslePricePlot_MouseMove(object sender, MouseEventArgs e) {
+            if (!IsCreating && GraphList.SelectedItem == null) {
+                return;
+            }
+
+            (double mouseCoordX, double mouseCoordY) = OechslePricePlot.GetMouseCoordinates();
+            double xyRatio = OechslePricePlot.Plot.XAxis.Dims.PxPerUnit / OechslePricePlot.Plot.YAxis.Dims.PxPerUnit;
+            (double pointX, double pointY, int pointIndex) = OechslePricePlotScatter.GetPointNearest(mouseCoordX, mouseCoordY, xyRatio);
+
+            (double mousePixelX, double mousePixelY) = OechslePricePlot.GetMousePixel();
+            (double pointPixelX, double pointPixelY) = OechslePricePlot.Plot.GetPixel(pointX, pointY);
+
+            HighlightedIndex = LastHighlightedIndex;
+
+            if (Math.Abs(mousePixelX - pointPixelX) < 3 && Math.Abs(mousePixelY - pointPixelY) < 3) {
+                ChangeMarker(HighlightedPoint, true, pointX, pointY);
+                HighlightedPoint.IsVisible = true;
+                HoverChanged = true ^ HoverActive;
+                HoverActive = true;
+            } else {
+                ChangeMarker(HighlightedPoint, false);
+                HoverChanged= false ^ HoverActive;
+                HoverActive= false;
+                OechslePricePlot.Plot.Remove(Tooltip);
+                OechslePricePlot.Render();
+            }
+
+            if (LastHighlightedIndex != HighlightedIndex || HoverChanged) {
+                OechslePricePlot.Plot.Remove(Tooltip);
+                if (TooltipInput.IsChecked == true) {
+                    Tooltip = OechslePricePlot.Plot.AddTooltip($"Oechsle: {pointX:N2}, Preis: {Math.Round(pointY, 4)})", pointX, pointY);
+                }
+                LastHighlightedIndex = pointIndex;
+                HoverChanged = false;
+                OechslePricePlot.Render();
+            }
+        }
+
+        override protected void UpdateButtons() {
+            if (!IsEditing && !IsCreating) return;
+            bool ch = HasChanged, v = IsValid;
+        }
+
+        private void DisableNewEditDeleteButtons() {
+            NewButton.IsEnabled = false;
+            EditButton.IsEnabled = false;
+            DeleteButton.IsEnabled = false;
+        }
+
+        private void EnableNewEditDeleteButtons() {
+            NewButton.IsEnabled = true;
+            EditButton.IsEnabled = GraphList.SelectedItem != null;
+            DeleteButton.IsEnabled = GraphList.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;
+        }
+
+        private void HideSaveResetCancelButtons() {
+            SaveButton.IsEnabled = false;
+            ResetButton.IsEnabled = false;
+            CancelButton.IsEnabled = false;
+            SaveButton.Visibility = Visibility.Hidden;
+            ResetButton.Visibility = Visibility.Hidden;
+            CancelButton.Visibility = Visibility.Hidden;
+        }
+        private void ShowNewEditDeleteButtons() {
+            EnableNewEditDeleteButtons();
+            NewButton.Visibility = Visibility.Visible;
+            EditButton.Visibility = Visibility.Visible;
+            DeleteButton.Visibility = Visibility.Visible;
+        }
+
+        private void HideNewEditDeleteButtons() {
+            DisableNewEditDeleteButtons();
+            NewButton.Visibility = Visibility.Hidden;
+            EditButton.Visibility = Visibility.Hidden;
+            DeleteButton.Visibility = Visibility.Hidden;
+        }
+
+        private void NewButton_Click(object sender, RoutedEventArgs e) {
+            IsCreating = true;
+            GraphList.IsEnabled = false;
+            GraphList.SelectedItem = null;
+            HideNewEditDeleteButtons();
+            ShowSaveResetCancelButtons();
+            UnlockInputs();
+            PriceInput.IsReadOnly = false;
+            OechsleInput.IsReadOnly = false;
+            InitInputs();
+            FillInputs(new Graph(GraphList.Items.Count + 1, MinOechsle, MaxOechsle));
+            EnableOptionButtons();
+        }
+
+        private void EditButton_Click(object sender, RoutedEventArgs e) {
+            if (GraphList.SelectedItem == null) {
+                return;
+            }
+
+            IsEditing = true;
+            GraphList.IsEnabled = false;
+
+            HideNewEditDeleteButtons();
+            ShowSaveResetCancelButtons();
+            UnlockInputs();
+            PriceInput.IsReadOnly = false;
+            OechsleInput.IsReadOnly = false;
+            if (PrimaryMarkedPointIndex != -1) EnableActionButtons();
+        }
+
+        private async void DeleteButton_Click(object sender, RoutedEventArgs e) {
+            Graph g = (Graph)GraphList.SelectedItem;
+            if (g == null) return;
+
+            var r = MessageBox.Show(
+                $"Soll der Graph {g.Num} (verwendet in folgenden Verträgen: {g.Contracts}) wirklich unwiderruflich gelöscht werden?",
+                "Graph löschen", MessageBoxButton.YesNo, MessageBoxImage.Warning, MessageBoxResult.No);
+            if (r == MessageBoxResult.Yes) {
+                bool success = await RemoveGraph(g.Num);
+                if (!success) {
+                    MessageBox.Show("Der Graph konnte nicht gelöscht werden", "Graph löschen", MessageBoxButton.OK, MessageBoxImage.Error);
+                }
+                await RefreshGraphList();
+            }
+        }
+
+
+        private async void SaveButton_Click(object sender, RoutedEventArgs e) {
+            int? index = await UpdateGraph(Graph);
+            if (index == null) {
+                MessageBox.Show("Der Graph konnte nicht gespeichert werden", "Graph speichern", MessageBoxButton.OK, MessageBoxImage.Error);
+            }
+            IsEditing = false;
+            IsCreating = false;
+            GraphList.IsEnabled = true;
+            HideSaveResetCancelButtons();
+            ShowNewEditDeleteButtons();
+            LockInputs();
+            PriceInput.IsReadOnly = true;
+            OechsleInput.IsReadOnly = true;
+            await RefreshGraphList();
+            GraphList.SelectedIndex = index.Value;
+        }
+
+        private async Task<int?> UpdateGraph(Graph g) {
+            List<PaymentVar> paymentVars = await Context.PaymentVariants.Where(p => p.Year == Year && p.AvNr == AvNr).ToListAsync();
+
+            if (paymentVars.Count != 1) {
+                return null;
+            }
+
+            PaymentVar paymentVar = paymentVars[0];
+            var data = JToken.Parse(paymentVar.Data);
+
+            var auszahlungsSorten = data["AuszahlungSorten"];
+            if (auszahlungsSorten == null) {
+                return null;
+            }
+
+            var Graphs = auszahlungsSorten["Kurven"];
+
+            if (Graphs == null) {
+                return null;
+            }
+
+            if (IsEditing) {
+                ((JArray)Graphs)[g.Num - 1] = g.ToJson();
+            } else if(IsCreating) {
+                ((JArray)Graphs).Add(g.ToJson());
+            } else {
+                return null;
+            }
+
+            EntityEntry<PaymentVar>? tr = null;
+            try {
+                paymentVar.Data = data.ToString();
+                tr = Context.Update(paymentVar);
+
+                await Context.SaveChangesAsync();
+            } catch (Exception exc) {
+                if (tr != null) await tr.ReloadAsync();
+                var str = "Der Eintrag konnte nicht in der Datenbank gelöscht werden!\n\n" + exc.Message;
+                if (exc.InnerException != null) str += "\n\n" + exc.InnerException.Message;
+                MessageBox.Show(str, "Graph löschen", MessageBoxButton.OK, MessageBoxImage.Error);
+            }
+
+            return g.Num - 1;
+        }
+
+        private void ResetButton_Click(object sender, RoutedEventArgs e) {
+            if (IsEditing) {
+                RefreshInputs();
+            } else if (IsCreating) {
+                InitInputs();
+            }
+            UpdateButtons();
+        }
+
+        private void CancelButton_Click(object sender, RoutedEventArgs e) {
+            IsEditing = false;
+            IsCreating = false;
+            GraphList.IsEnabled = true;
+            HideSaveResetCancelButtons();
+            ShowNewEditDeleteButtons();
+            DisableActionButtons();
+            RefreshInputs();
+            PriceInput.Text = "";
+            OechsleInput.Text = "";
+            ClearInputStates();
+            LockInputs();
+            PriceInput.IsReadOnly = true;
+            OechsleInput.IsReadOnly = true;
+        }
+
+        private void GraphList_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e) {
+            RefreshInputs();
+
+            //var x = OechslePricePlot.Plot.GetPlottables().OfType<ScatterPlot>();
+            //MessageBox.Show($"SelectionChanged\nLength: {x.ToList().Count}, Ys: {string.Join(", ", ((ScatterPlot)x.First()).Ys)}");
+        }
+
+        private void PriceInput_LostFocus(object sender, RoutedEventArgs e) {
+
+        }
+
+        private void OechsleInput_LostFocus(object sender, RoutedEventArgs e) {
+
+        }
+
+        private void GraphNumberInput_TextChanged(object sender, TextChangedEventArgs e) {
+
+        }
+
+        private void GraphNumberInput_LostFocus(object sender, RoutedEventArgs e) {
+
+        }
+    }
+}
diff --git a/Elwig/Windows/MainWindow.xaml b/Elwig/Windows/MainWindow.xaml
index af15628..0f11a23 100644
--- a/Elwig/Windows/MainWindow.xaml
+++ b/Elwig/Windows/MainWindow.xaml
@@ -57,5 +57,7 @@
                 Margin="260,240,0,0" VerticalAlignment="Top" HorizontalAlignment="Left"/>
         <Button x:Name="QueryWindowButton" Content="Datenbankabfragen" Click="QueryWindowButton_Click"
                 Margin="260,280,0,0" VerticalAlignment="Top" HorizontalAlignment="Left"/>
+        <Button x:Name="PaymentWindowButton" Content="Auszahlung" Click="PaymentWindowButton_Click"
+                Margin="260,320,0,0" VerticalAlignment="Top" HorizontalAlignment="Left"/>
     </Grid>
 </Window>
diff --git a/Elwig/Windows/MainWindow.xaml.cs b/Elwig/Windows/MainWindow.xaml.cs
index 5f32865..8ee1189 100644
--- a/Elwig/Windows/MainWindow.xaml.cs
+++ b/Elwig/Windows/MainWindow.xaml.cs
@@ -61,5 +61,10 @@ namespace Elwig.Windows {
             var w = new BaseDataWindow();
             w.Show();
         }
+
+        private void PaymentWindowButton_Click(object sender, RoutedEventArgs e) {
+            var w = new ChartWindow();
+            w.Show();
+        }
     }
 }
diff --git a/Elwig/Windows/TestWindow.xaml b/Elwig/Windows/TestWindow.xaml
index 57e9680..72e75f0 100644
--- a/Elwig/Windows/TestWindow.xaml
+++ b/Elwig/Windows/TestWindow.xaml
@@ -16,5 +16,7 @@
         <Button x:Name="WeighingButton1" Click="WeighingButton1_Click" Height="30" Content="Aktuelles Gewicht" Width="110" Margin="515,246,0,0" HorizontalAlignment="Left" VerticalAlignment="Top"/>
         <Button x:Name="WeighingButton2" Click="WeighingButton2_Click" Height="30" Content="Wiegen" Width="110" Margin="515,285,0,0" HorizontalAlignment="Left" VerticalAlignment="Top"/>
         <TextBlock x:Name="Output" Height="20" Width="200" Margin="470,329,0,0"  HorizontalAlignment="Left" VerticalAlignment="Top"/>
+        <Button x:Name="ChartButton" Content="Chart" Click="ChartButton_Click"
+                Margin="50,240,0,0" VerticalAlignment="Top" HorizontalAlignment="Left"/>
     </Grid>
 </Window>
diff --git a/Elwig/Windows/TestWindow.xaml.cs b/Elwig/Windows/TestWindow.xaml.cs
index 30164ef..aede0be 100644
--- a/Elwig/Windows/TestWindow.xaml.cs
+++ b/Elwig/Windows/TestWindow.xaml.cs
@@ -34,5 +34,10 @@ namespace Elwig.Windows {
                     MessageBoxButton.OK, MessageBoxImage.Error);
             }
         }
+
+        private void ChartButton_Click(object sender, RoutedEventArgs evt) {
+            var w = new ChartWindow();
+            w.Show();
+        }
     }
 }