Fixes for: OperationsMenuView.axaml and OperationsMenuViewModel.cs

[Noemata]

Change OperationsMenuView.axaml to:

<UserControl xmlns="https://github.com/avaloniaui"
             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:Nodify.Avalonia.Calculator.ViewModels"
             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
             x:Class="Nodify.Avalonia.Calculator.Views.OperationsMenuView"
             x:DataType="local:OperationsMenuViewModel"
             Bounds="{Binding Bounds,Mode=OneWayToSource}">

	<UserControl.Resources>
		<ControlTheme TargetType="{x:Type TextBlock}" x:Key="{x:Type TextBlock}">
			<Setter Property="Foreground"
                    Value="{DynamicResource ForegroundBrush}" />
		</ControlTheme>
	</UserControl.Resources>

  <!--
  <UserControl.Styles>
    <Style Selector="TextBlock">
        <Setter Property="Foreground"
                Value="{DynamicResource ForegroundBrush}" />
    </Style>
  </UserControl.Styles>
  -->

    <Border Padding="7"
            CornerRadius="3"
            Background="{DynamicResource Node.BackgroundBrush}"
            BorderBrush="{DynamicResource NodifyEditor.SelectionRectangleStrokeBrush}"
            BorderThickness="2"
            IsVisible="{Binding IsVisible}">
        <Grid>
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto" />
                <RowDefinition Height="*" />
            </Grid.RowDefinitions>

            <ItemsControl Grid.Row="1" 
                          ItemsSource="{Binding AvailableOperations}">
                <ItemsControl.ItemTemplate>
                    <DataTemplate DataType="{x:Type local:OperationInfoViewModel}">
						<!--
                        xmlns:view="clr-namespace:Nodify.Avalonia.Calculator.Views"
						Command="{Binding ((local:OperationsMenuViewModel)DataContext).CreateOperationCommand, RelativeSource={RelativeSource AncestorType=view:OperationsMenuView}}"
                        Command="{Binding ((local:OperationsMenuViewModel)DataContext).CreateOperationCommand, RelativeSource={RelativeSource AncestorType=UserControl}}"
						Why does below not work?
                        Command="{Binding DataContext.CreateOperationCommand, RelativeSource={RelativeSource AncestorType=UserControl}}"
						-->
						<Button Content="{Binding Title}"
                                Command="{Binding ((local:OperationsMenuViewModel)DataContext).CreateOperationCommand, RelativeSource={RelativeSource AncestorType=UserControl}}"
                                CommandParameter="{Binding}"
                                Background="Transparent"
                                BorderBrush="Transparent"
                                Foreground="{DynamicResource ForegroundBrush}"
                                Padding="3"
                                Cursor="Hand"
                                HorizontalContentAlignment="Left">
							<Button.Theme>
								<ControlTheme TargetType="{x:Type Button}">
									<Setter Property="Template">
										<Setter.Value>
											<ControlTemplate TargetType="{x:Type Button}">
												<Border Name="Border"
                                                        Background="{TemplateBinding Background}"
                                                        Padding="{TemplateBinding Padding}">
													<ContentPresenter Content="{TemplateBinding Content}" ContentTemplate="{TemplateBinding ContentTemplate}" />
												</Border>
											</ControlTemplate>
										</Setter.Value>
									</Setter>
									<Style Selector="^:pointerover /template/ Border#Border">
										<Setter Property="Background"
                                                Value="{DynamicResource NodeInput.BorderBrush}" />
									</Style>
								</ControlTheme>
							</Button.Theme>
							<!--
                            <Button.Styles>
                                <Style Selector="Button">
                                    <Setter Property="Template">
                                        <Setter.Value>
                                            <ControlTemplate TargetType="{x:Type Button}">
                                                <Border Name="Border"
                                                        Background="{TemplateBinding Background}"
                                                        Padding="{TemplateBinding Padding}">
                                                    <ContentPresenter Content="{TemplateBinding Content}"
                                                                      ContentTemplate="{TemplateBinding ContentTemplate}"/>
                                                </Border>
                                            </ControlTemplate>
                                        </Setter.Value>
                                    </Setter>
                                    <Style Selector="^ :pointerover /template/ Border#Border">
                                        <Setter Property="Background"
                                                Value="{DynamicResource NodeInput.BorderBrush}" />
                                    </Style>
                                </Style>
                            </Button.Styles>
							-->
                        </Button>
                    </DataTemplate>
                </ItemsControl.ItemTemplate>
            </ItemsControl>
        </Grid>
    </Border>
</UserControl>

In OperationsMenuViewModel.cs:

remove unused -> private Rect _bounds;