FModel/FModel/Views/Resources/Controls/EndpointEditor.xaml

<adonisControls:AdonisWindow x:Class="FModel.Views.Resources.Controls.EndpointEditor"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:converters="clr-namespace:FModel.Views.Resources.Converters"
         xmlns:avalonEdit="http://icsharpcode.net/sharpdevelop/avalonedit"
         xmlns:adonisUi="clr-namespace:AdonisUI;assembly=AdonisUI"
         xmlns:adonisControls="clr-namespace:AdonisUI.Controls;assembly=AdonisUI"
         xmlns:adonisExtensions="clr-namespace:AdonisUI.Extensions;assembly=AdonisUI"
         WindowStartupLocation="CenterScreen" IconVisibility="Collapsed" ResizeMode="NoResize" Closing="OnClosing"
         Width="{Binding Source={x:Static SystemParameters.MaximizedPrimaryScreenWidth}, Converter={converters:RatioConverter}, ConverterParameter='0.50'}"
         Height="{Binding Source={x:Static SystemParameters.MaximizedPrimaryScreenWidth}, Converter={converters:RatioConverter}, ConverterParameter='0.30'}">
    <adonisControls:AdonisWindow.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="../Resources.xaml"/>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </adonisControls:AdonisWindow.Resources>
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="*"/>
            <RowDefinition Height="Auto"/>
        </Grid.RowDefinitions>

        <Grid>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*" />
                <ColumnDefinition Width="5" />
                <ColumnDefinition Width="*" />
            </Grid.ColumnDefinitions>

            <Grid Grid.Column="0">
                <Grid.RowDefinitions>
                    <RowDefinition Height="Auto"/>
                    <RowDefinition Height="5"/>
                    <RowDefinition Height="*"/>
                </Grid.RowDefinitions>

                <Grid Grid.Row="0" Margin="{adonisUi:Space 1, 0.5}">
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="Auto" />
                        <ColumnDefinition Width="10" />
                        <ColumnDefinition Width="*" />
                        <ColumnDefinition Width="5" />
                        <ColumnDefinition Width="Auto" />
                    </Grid.ColumnDefinitions>

                    <TextBlock Grid.Column="0" Text="Endpoint" VerticalAlignment="Center" Margin="0 0 0 5" />
                    <TextBox Grid.Column="2" Margin="0 0 0 5" Text="{Binding Url, Mode=TwoWay}" TextChanged="OnTextChanged" />
                    <Button Grid.Column="4" Content="Send" HorizontalAlignment="Right" Margin="0 0 0 5"
                            Style="{DynamicResource {x:Static adonisUi:Styles.AccentButton}}" Click="OnSend"/>
                </Grid>

                <avalonEdit:TextEditor x:Name="EndpointResponse" Grid.Row="2" Background="{DynamicResource {x:Static adonisUi:Brushes.Layer3BackgroundBrush}}"
                                       FontFamily="Consolas" FontSize="8pt" IsReadOnly="True" ShowLineNumbers="True" Foreground="#DAE5F2" />
            </Grid>

            <Grid Grid.Column="2">
                <Grid.RowDefinitions>
                    <RowDefinition Height="Auto"/>
                    <RowDefinition Height="5"/>
                    <RowDefinition Height="*"/>
                </Grid.RowDefinitions>

                <Grid Grid.Row="0" Margin="{adonisUi:Space 1, 0.5}">
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="Auto" />
                        <ColumnDefinition Width="10" />
                        <ColumnDefinition Width="*" />
                        <ColumnDefinition Width="5" />
                        <ColumnDefinition Width="Auto" />
                    </Grid.ColumnDefinitions>

                    <TextBlock Grid.Column="0" Text="Path" VerticalAlignment="Center" Margin="0 0 0 5" />
                    <TextBox Grid.Column="2" Margin="0 0 0 5" Text="{Binding Path, Mode=TwoWay}" TextChanged="OnTextChanged" />
                    <Button Grid.Column="4" Content="Test" HorizontalAlignment="Right" Margin="0 0 0 5"
                            Style="{DynamicResource {x:Static adonisUi:Styles.AccentButton}}" Click="OnTest"/>
                </Grid>

                <avalonEdit:TextEditor x:Name="TargetResponse" Grid.Row="2" Background="{DynamicResource {x:Static adonisUi:Brushes.Layer3BackgroundBrush}}"
                                       FontFamily="Consolas" FontSize="8pt" IsReadOnly="True" ShowLineNumbers="True" Foreground="#DAE5F2" />
            </Grid>
        </Grid>

        <Border Grid.Row="1"
                Background="{DynamicResource {x:Static adonisUi:Brushes.Layer1BackgroundBrush}}"
                adonisExtensions:LayerExtension.IncreaseLayer="True">
            <Grid Margin="30, 12, 6, 12">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="*"/>
                    <ColumnDefinition Width="Auto"/>
                    <ColumnDefinition Width="Auto"/>
                </Grid.ColumnDefinitions>

                <TextBlock Grid.Column="0" Text="{Binding Label}"
                           HorizontalAlignment="Right" VerticalAlignment="Center" FontSize="11" Margin="0 0 10 0" FontWeight="DemiBold"
                           Foreground="{DynamicResource {x:Static adonisUi:Brushes.Layer1InteractionForegroundBrush}}" />

                <Button Grid.Column="1" MinWidth="78" Margin="0 0 12 0" IsDefault="True" IsCancel="False"
                        HorizontalAlignment="Right" VerticalAlignment="Bottom" Content="OK" Click="OnClick" />
                <Button Grid.Column="2" MinWidth="78" Margin="0 0 12 0" IsDefault="False" IsCancel="False"
                        HorizontalAlignment="Right" VerticalAlignment="Bottom" Content="Online Evaluator" Click="OnEvaluator" />
            </Grid>
        </Border>
    </Grid>
</adonisControls:AdonisWindow>