Lattice/Lattice.IDE/MainWindow.xaml.cs

using Lattice.Core.Docking.Engine;
using Lattice.Core.Docking.Models;
using Lattice.IDE.Controls;
using Lattice.Themes;
using Microsoft.UI.Xaml;
// Ïðåäïîëîæèì, ÷òî VS2026Theme òîæå ðåàëèçîâàí àíàëîãè÷íî Fluent
// using Lattice.Themes.VisualStudio2026; 

namespace Lattice.IDE;

public sealed partial class MainWindow : Window
{
    private LayoutManager _manager;

    public MainWindow()
    {
        this.InitializeComponent();
        WindowTracker.Register(this);
        SystemBackdrop = new Microsoft.UI.Xaml.Media.MicaBackdrop();
        InitLattice();
    }

    private void InitLattice()
    {
        _manager = new LayoutManager();

        // Ñîçäàåì êîíòåíò íà îñíîâå XAML UserControls
        var solutionExplorer = new DemoContent(
            "sln",
            "Solution Explorer",
            new SolutionExplorerView()
        );

        var editor = new DemoContent(
            "code_01",
            "Program.cs",
            new EditorView()
        );

        // Ñîáèðàåì äåðåâî (êàê ðàíüøå)
        var leftLeaf = new DockLeaf();
        leftLeaf.AddContent(solutionExplorer);

        var centerLeaf = new DockLeaf()
        {
            TabPlacement = TabPlacement.Top,
        };
        centerLeaf.AddContent(editor);

        var rootGroup = new DockGroup(leftLeaf, centerLeaf, SplitDirection.Horizontal)
        {
            SplitRatio = 0.25
        };

        _manager.SetRoot(rootGroup);
        DockHost.Manager = _manager;
    }

    private void SetFluentTheme(object sender, RoutedEventArgs e) =>
        ThemeManager.Current.ApplyTheme(new FluentThemePack());

    private void SetVSTheme(object sender, RoutedEventArgs e) =>
        ThemeManager.Current.ApplyTheme(new VS2026ThemePack());
}