1.ProjectLayout.xaml
<UserControl x:Class="PrimalEditor.Editors.ProjectLayoutView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:PrimalEditor.Editors"
xmlns:proj="clr-namespace:PrimalEditor.GameProject"
mc:Ignorable="d"
d:DesignHeight="450" d:DesignWidth="800">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="32"/>
<RowDefinition/>
</Grid.RowDefinitions>
<Button Content="Add Scene" Width="96" VerticalAlignment="Center" Focusable="False" Grid.Row="0" HorizontalAlignment="Left" Margin="20,0,0,0"
Command="{Binding AddSceneCommand}" />
<ScrollViewer Grid.Row="1" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto">
<ItemsControl ItemsSource="{Binding Scenes}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel/>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<Expander IsExpanded="{Binding IsActive,Mode=OneWay}">
<Expander.Header>
<Grid>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding Name}"/>
<Button Content="Remove"
Command="{Binding DataContext.RemoveSceneCommand,RelativeSource={RelativeSource AncestorType=UserControl}}"
CommandParameter="{Binding}" Margin="20,0" Focusable="False"
/>
<Button Content="+" IsEnabled="True"
Click="OnAddGameEntity_Button_Click"
/>
</StackPanel>
</Grid>
</Expander.Header>
<ListBox ItemsSource="{Binding GameEntities}" IsEnabled="True" SelectionMode="Extended"
SelectionChanged="OnGameEntities_ListBox_SelectionChanged">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding Name}"/>
<Button Content="Remove"
Command="{Binding ParentScene.RemoveGameEntityCommand}"
CommandParameter="{Binding}"/>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</Expander>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</ScrollViewer>
</Grid>
</UserControl>