WIP: feat: Implement Project selection/creation

sources/editor/Stride.Core.Assets.Editor.Avalonia/ITemplateDescriptionViewModel.cs

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+// Copyright (c) .NET Foundation and Contributors (https://dotnetfoundation.org/ & https://stride3d.net) and Silicon Studio Corp. (https://www.siliconstudio.co.jp)
+// Distributed under the MIT license. See the LICENSE.md file in the project root for more information.
+using System;
+using System.Collections.Generic;
+using Avalonia.Media.Imaging;
+using Stride.Core.Assets.Templates;
+
+namespace Stride.Core.Assets.Editor.Components.TemplateDescriptions.ViewModels
+{
+    public interface ITemplateDescriptionViewModel
+    {
+        string Name { get; }
+
+        string Description { get; }
+
+        string FullDescription { get; }
+
+        string Group { get; }
+
+        Guid Id { get; }
+
+        string DefaultOutputName { get; }
+
+        Bitmap Icon { get; }
+
+        IEnumerable<Bitmap> Screenshots { get; }
+
+        TemplateDescription GetTemplate();
+    }
+}

sources/editor/Stride.Core.Assets.Editor.Avalonia/NewOrOpenSessionTemplateCollectionViewModel.cs

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+using Stride.Core.Assets.Editor.Services;
+using Stride.Core.Presentation.Commands;
+using Stride.Core.Presentation.Services;
+using Stride.Core.Presentation.ViewModels;
+
+namespace Stride.Core.Assets.Editor.Avalonia;
+
+public class NewOrOpenSessionTemplateCollectionViewModel
+{
+    private readonly IModalDialog dialog;
+    private readonly IViewModelServiceProvider serviceProvider;
+    public NewOrOpenSessionTemplateCollectionViewModel(IViewModelServiceProvider serviceProvider)
+    {   
+        this.serviceProvider = serviceProvider;
+        BrowseForExistingProjectCommand = new AnonymousTaskCommand(serviceProvider, BrowseForExistingProject);
+    }
+    public ICommandBase BrowseForExistingProjectCommand { get; }
+    public bool AutoReloadSession { get; }
+
+    private async Task BrowseForExistingProject()
+    {
+        var filePath = await EditorDialogHelper.BrowseForExistingProject(serviceProvider);
+        if (filePath != null)
+        {
+            //SelectedTemplate = new ExistingProjectViewModel(ServiceProvider, filePath, RemoveExistingProjects);
+            dialog?.RequestClose(DialogResult.Ok);
+        }
+    }
+
+}

sources/editor/Stride.Core.Assets.Editor.Avalonia/ObjectBrowserUserControl.axaml

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+<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"
+             mc:Ignorable="d" d:DesignWidth="300" d:DesignHeight="300"
+             x:Class="Stride.Core.Assets.Editor.Avalonia.ObjectBrowserUserControl">
+    <Grid ColumnDefinitions="*,5,3*,5,220">
+        <TreeView Grid.Column="0" SelectionMode="Single"
+                    ItemsSource="{Binding HierarchyItemsSource, ElementName=ObjectBrowser, Mode=TwoWay}"
+                    SelectedItem="{Binding SelectedHierarchyItem, ElementName=ObjectBrowser, Mode=TwoWay}"
+                    ItemTemplate="{Binding HierarchyItemTemplate, ElementName=ObjectBrowser, Mode=TwoWay}" />
+
+        <GridSplitter Grid.Column="1" ResizeBehavior="PreviousAndNext" VerticalAlignment="Stretch" Width="5"/>
+
+        <ListBox Grid.Column="2"
+                ItemsSource="{Binding ObjectItemsSource, ElementName=ObjectBrowser, Mode=TwoWay}"
+                SelectedItem="{Binding SelectedObjectItem, ElementName=ObjectBrowser, Mode=TwoWay}"
+                ScrollViewer.HorizontalScrollBarVisibility="Disabled"/>
+
+        <GridSplitter Grid.Column="3" ResizeBehavior="PreviousAndNext" VerticalAlignment="Stretch" Width="5"/>
+
+        <DockPanel Grid.Column="4" Background="{DynamicResource ControlBackgroundBrush}">
+        <ScrollViewer x:Name="DescriptionScrollViewer" VerticalScrollBarVisibility="Auto">
+            <ContentPresenter Content="{Binding SelectedObjectItem, ElementName=ObjectBrowser, Mode=TwoWay}"
+                            ContentTemplate="{Binding ObjectDescriptionTemplate, ElementName=ObjectBrowser, Mode=TwoWay}"/>
+        </ScrollViewer>
+        </DockPanel>
+    </Grid>
+</UserControl>
+

sources/editor/Stride.Core.Assets.Editor.Avalonia/ObjectBrowserUserControl.axaml.cs

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+// Copyright (c) .NET Foundation and Contributors (https://dotnetfoundation.org/ & https://stride3d.net)
+// Distributed under the MIT license. See the LICENSE.md file in the project root for more information.
+
+using System.Collections;
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Controls.Templates;
+using Avalonia.Styling;
+
+namespace Stride.Core.Assets.Editor.Avalonia;
+
+public partial class ObjectBrowserUserControl : UserControl
+{
+    public static readonly StyledProperty<IEnumerable> HierarchyItemsSourceProperty =
+        AvaloniaProperty.Register<ObjectBrowserUserControl, IEnumerable>(nameof(HierarchyItemsSource));
+
+    public static readonly StyledProperty<object> SelectedHierarchyItemProperty =
+        AvaloniaProperty.Register<ObjectBrowserUserControl, object>(nameof(SelectedHierarchyItem));
+
+    public static readonly StyledProperty<IDataTemplate> HierarchyItemTemplateProperty =
+        AvaloniaProperty.Register<ObjectBrowserUserControl, IDataTemplate>(nameof(HierarchyItemTemplate));
+
+    public static readonly StyledProperty<IStyle> HierarchyItemContainerStyleProperty =
+        AvaloniaProperty.Register<ObjectBrowserUserControl, IStyle>(nameof(HierarchyItemContainerStyle));
+
+    public static readonly StyledProperty<IEnumerable> ObjectItemsSourceProperty =
+        AvaloniaProperty.Register<ObjectBrowserUserControl, IEnumerable>(nameof(ObjectItemsSource));
+
+    public static readonly StyledProperty<object> SelectedObjectItemProperty =
+        AvaloniaProperty.Register<ObjectBrowserUserControl, object>(nameof(SelectedObjectItem));
+
+    public static readonly StyledProperty<IDataTemplate> ObjectItemTemplateProperty =
+        AvaloniaProperty.Register<ObjectBrowserUserControl, IDataTemplate>(nameof(ObjectItemTemplate));
+
+    public static readonly StyledProperty<IDataTemplate> ObjectItemTemplateSelectorProperty =
+        AvaloniaProperty.Register<ObjectBrowserUserControl, IDataTemplate>(nameof(ObjectItemTemplateSelector));
+
+    public static readonly StyledProperty<IStyle> ObjectItemContainerStyleProperty =
+        AvaloniaProperty.Register<ObjectBrowserUserControl, IStyle>(nameof(ObjectItemContainerStyle));
+
+    public static readonly StyledProperty<IDataTemplate> ObjectDescriptionTemplateProperty =
+        AvaloniaProperty.Register<ObjectBrowserUserControl, IDataTemplate>(nameof(ObjectDescriptionTemplate));
+
+    public static readonly StyledProperty<IDataTemplate> ObjectDescriptionTemplateSelectorProperty =
+        AvaloniaProperty.Register<ObjectBrowserUserControl, IDataTemplate>(nameof(ObjectDescriptionTemplateSelector));
+
+    public ObjectBrowserUserControl()
+    {
+        InitializeComponent();
+    }
+
+    public IEnumerable HierarchyItemsSource
+    {
+        get => GetValue(HierarchyItemsSourceProperty);
+        set => SetValue(HierarchyItemsSourceProperty, value);
+    }
+
+    public object SelectedHierarchyItem
+    {
+        get => GetValue(SelectedHierarchyItemProperty);
+        set => SetValue(SelectedHierarchyItemProperty, value);
+    }
+
+    public IDataTemplate HierarchyItemTemplate
+    {
+        get => GetValue(HierarchyItemTemplateProperty);
+        set => SetValue(HierarchyItemTemplateProperty, value);
+    }
+
+    public IStyle HierarchyItemContainerStyle
+    {
+        get => GetValue(HierarchyItemContainerStyleProperty);
+        set => SetValue(HierarchyItemContainerStyleProperty, value);
+    }
+
+    public IEnumerable ObjectItemsSource
+    {
+        get => GetValue(ObjectItemsSourceProperty);
+        set => SetValue(ObjectItemsSourceProperty, value);
+    }
+
+    public object SelectedObjectItem
+    {
+        get => GetValue(SelectedObjectItemProperty);
+        set => SetValue(SelectedObjectItemProperty, value);
+    }
+
+    public IDataTemplate ObjectItemTemplate
+    {
+        get => GetValue(ObjectItemTemplateProperty);
+        set => SetValue(ObjectItemTemplateProperty, value);
+    }
+
+    public IDataTemplate ObjectItemTemplateSelector
+    {
+        get => GetValue(ObjectItemTemplateSelectorProperty);
+        set => SetValue(ObjectItemTemplateSelectorProperty, value);
+    }
+
+    public IStyle ObjectItemContainerStyle
+    {
+        get => GetValue(ObjectItemContainerStyleProperty);
+        set => SetValue(ObjectItemContainerStyleProperty, value);
+    }
+
+    public IDataTemplate ObjectDescriptionTemplate
+    {
+        get => GetValue(ObjectDescriptionTemplateProperty);
+        set => SetValue(ObjectDescriptionTemplateProperty, value);
+    }
+
+    public IDataTemplate ObjectDescriptionTemplateSelector
+    {
+        get => GetValue(ObjectDescriptionTemplateSelectorProperty);
+        set => SetValue(ObjectDescriptionTemplateSelectorProperty, value);
+    }
+
+    // If you have a scroll viewer in your .axaml file:
+    private void OnSelectedObjectItemChanged()
+    {
+        // ScrollViewer?.ScrollToTop(); // Placeholder: hook up actual ScrollViewer reference
+    }
+}

sources/editor/Stride.Core.Assets.Editor.Avalonia/ProjectSelectionWindow.axaml

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+<Window 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:avalonia="clr-namespace:Stride.Core.Assets.Editor.Avalonia"
+        xmlns:sd="http://schemas.stride3d.net/xaml/presentation"
+        mc:Ignorable="d"
+        Height="768" Width="1024" ShowInTaskbar="False"
+        x:Class="Stride.Core.Assets.Editor.Avalonia.ProjectSelectionWindow"
+        d:DataContext="{d:DesignInstance avalonia:NewOrOpenSessionTemplateCollectionViewModel}">
+        <DockPanel>
+            <Grid DockPanel.Dock="Bottom">
+                <DockPanel>
+                    <DockPanel DockPanel.Dock="Bottom" Margin="20">
+                        <Button DockPanel.Dock="Left" Content="{sd:LocalizeString Browse for existing project, Context=Button}" Command="{Binding BrowseForExistingProjectCommand}" Padding="20,6"/>
+                        <CheckBox IsChecked="{Binding AutoReloadSession}" Content="{sd:LocalizeString Reload last session automatically at startup, Context=Button}"
+                                    VerticalAlignment="Center" Margin="8"/>
+                        <StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
+                            <UniformGrid Rows="1">
+                                <Button Content="{sd:LocalizeString Select, Context=Button}" Padding="20,6" Margin="10,0,0,0"
+                                        IsEnabled="{Binding SelectedTemplate, Converter={sd:ObjectToBool}}">
+                                </Button>
+                                <Button Content="{sd:LocalizeString Cancel, Context=Button}" Padding="20,6" Margin="10,0,0,0" IsCancel="True">
+                                </Button>
+                            </UniformGrid>
+                        </StackPanel>
+                    </DockPanel>
+                    <Grid ColumnDefinitions="Auto,2*,*" RowDefinitions="Auto,Auto,Auto,Auto">
+                        <TextBlock Grid.Row="0" Grid.Column="0" Text="{sd:LocalizeString Name:}" Margin="20,0" VerticalAlignment="Center"/>
+                        <TextBox Grid.Row="0" Grid.Column="1" Margin="2" Text="{Binding Name}"/>
+                        <TextBlock Grid.Row="1" Grid.Column="0" Text="{sd:LocalizeString Location:}" Margin="20,0" VerticalAlignment="Center"/>
+                        <DockPanel Grid.Row="1" Grid.Column="1">
+                            <Button DockPanel.Dock="Right" Command="{Binding BrowseDirectoryCommand}" CommandParameter="Location">
+                            </Button>
+                            <TextBox Margin="2" Text="{Binding Location}"/>
+                        </DockPanel>
+                        <TextBlock Grid.Row="2" Grid.Column="0" Text="{sd:LocalizeString Solution name:}" Margin="20,0" VerticalAlignment="Center"/>
+                        <TextBox Grid.Row="2" Grid.Column="1" Margin="2" Watermark="{sd:LocalizeString (Auto-generate solution name)}"
+                                        Text="{Binding SolutionName}">
+                        </TextBox>
+                        <TextBlock Grid.Row="3" Grid.Column="0" Text="{sd:LocalizeString Solution location:}" Margin="20,0" VerticalAlignment="Center"/>
+                        <DockPanel Grid.Row="3" Grid.Column="1">
+                            <Button DockPanel.Dock="Right" Command="{Binding BrowseDirectoryCommand}" CommandParameter="SolutionLocation" />
+                            <TextBox Margin="2" Watermark="{sd:LocalizeString (Same location)}" Text="{Binding SolutionLocation}">
+                            </TextBox>
+                        </DockPanel>
+                    </Grid>
+                </DockPanel>
+            </Grid>
+
+            <avalonia:TemplateBrowserUserControl Margin="10"/>
+        </DockPanel>
+</Window>
+

sources/editor/Stride.Core.Assets.Editor.Avalonia/ProjectSelectionWindow.axaml.cs

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+// Copyright (c) .NET Foundation and Contributors (https://dotnetfoundation.org/ & https://stride3d.net)
+// Distributed under the MIT license. See the LICENSE.md file in the project root for more information.
+
+using Avalonia.Controls;
+
+namespace Stride.Core.Assets.Editor.Avalonia;
+
+public partial class ProjectSelectionWindow : Window
+{
+    public ProjectSelectionWindow()
+    {
+        InitializeComponent();
+    }
+}
+

sources/editor/Stride.Core.Assets.Editor.Avalonia/TemplateBrowserUserControl.axaml

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+<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:avalonia="clr-namespace:Stride.Core.Assets.Editor.Avalonia"
+             mc:Ignorable="d" d:DesignWidth="300" d:DesignHeight="300"
+             xmlns:viewModels="clr-namespace:Stride.Core.Assets.Editor.Components.TemplateDescriptions.ViewModels"
+             d:DataContext="{d:DesignInstance viewModels:TemplateDescriptionCollectionViewModel}"
+             x:Class="Stride.Core.Assets.Editor.Avalonia.TemplateBrowserUserControl">
+    <avalonia:ObjectBrowserUserControl HierarchyItemsSource="{Binding RootGroups}"
+                                    SelectedHierarchyItem="{Binding SelectedGroup, Mode=TwoWay}"
+                                    ObjectItemsSource="{Binding Templates}"
+                                    SelectedObjectItem="{Binding SelectedTemplate}"
+                                    ObjectItemTemplateSelector="{StaticResource DataTypeTemplateSelector}">
+        <avalonia:ObjectBrowserUserControl.HierarchyItemTemplate>
+            <TreeDataTemplate ItemsSource="{Binding SubGroups}" DataType="viewModels:TemplateDescriptionGroupViewModel">
+                <TextBlock Text="{Binding Name}"/>
+            </TreeDataTemplate>
+        </avalonia:ObjectBrowserUserControl.HierarchyItemTemplate>
+        <avalonia:ObjectBrowserUserControl.ObjectDescriptionTemplate>
+            <DataTemplate DataType="viewModels:ITemplateDescriptionViewModel">
+                <StackPanel DockPanel.Dock="Top">
+                    <TextBlock FontWeight="Bold" Text="{Binding Name}" Margin="10"/>
+                    <TextBlock Text="{Binding FullDescription}" Margin="10,20" TextWrapping="Wrap"/>
+
+                    <ItemsControl ItemsSource="{Binding Screenshots}">
+                        <ItemsControl.ItemTemplate>
+                            <DataTemplate>
+                                <Image Margin="2,12" Source="{Binding}" MaxWidth="192" StretchDirection="DownOnly" />
+                            </DataTemplate>
+                        </ItemsControl.ItemTemplate>
+                    </ItemsControl>
+                </StackPanel>
+            </DataTemplate>
+        </avalonia:ObjectBrowserUserControl.ObjectDescriptionTemplate>
+    </avalonia:ObjectBrowserUserControl>
+</UserControl>

sources/editor/Stride.Core.Assets.Editor.Avalonia/TemplateBrowserUserControl.axaml.cs

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+// Copyright (c) .NET Foundation and Contributors (https://dotnetfoundation.org/ & https://stride3d.net)
+// Distributed under the MIT license. See the LICENSE.md file in the project root for more information.
+
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Markup.Xaml;
+
+namespace Stride.Core.Assets.Editor.Avalonia;
+
+public partial class TemplateBrowserUserControl : UserControl
+{
+    public TemplateBrowserUserControl()
+    {
+        InitializeComponent();
+    }
+}
+