using System.ComponentModel;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Controls.Primitives;

using System.Windows.Controls.Ribbon;

using System.Windows.Input;

using System.Windows.Threading;

using CSharpCodeAnalyst.Features.Graph;

using CSharpCodeAnalyst.Shared.Contracts;

using CSharpCodeAnalyst.Shared.Messages;

using CSharpCodeAnalyst.Shared.UI;

namespace CSharpCodeAnalyst;

public partial class MainWindow

{

public const double TreeMinWidthCollapsed = 24;

public const double TreeMinWidthExpanded = 400;

public MainWindow()

{

InitializeComponent();

Loaded += MainWindow_Loaded;

LeftExpander.Expanded += LeftExpander_Expanded;

}

private void MainWindow_Loaded(object sender, RoutedEventArgs e)

{

// Set a fixed width for the left column on first load to prevent jumping

EnsureLeftColumnWidth();

}

private void EnsureLeftColumnWidth()

{

// Use Dispatcher to ensure this runs after all layout updates

Dispatcher.BeginInvoke(new Action(() =>

{

// Always ensure we have a fixed width to prevent jumping

if (SplitterColumn.Width.IsAuto || SplitterColumn.Width.Value < TreeMinWidthExpanded)

{

SplitterColumn.Width = new GridLength(TreeMinWidthExpanded);

}

}), DispatcherPriority.Loaded);

}

private void Exit_Click(object sender, RoutedEventArgs e)

{

Close();

}

private void LeftExpander_Collapsed(object sender, RoutedEventArgs e)

{

// When collapsed, set to auto but ensure it gets fixed when expanded again

SplitterColumn.Width = GridLength.Auto;

}

private void LeftExpander_Expanded(object sender, RoutedEventArgs e)

{

// When expanded, ensure we have a proper fixed width to prevent jumping

EnsureLeftColumnWidth();

}

private void GridSplitter_DragDelta(object sender, DragDeltaEventArgs e)

{

var expander = LeftExpander;

// Calculate the new width

var newWidth = SplitterColumn.ActualWidth + e.HorizontalChange;

// Set a minimum width (adjust as needed)

var minWidth = expander.IsExpanded ? TreeMinWidthExpanded : TreeMinWidthCollapsed;

if (newWidth < minWidth)

{

e.Handled = true;

SplitterColumn.Width = new GridLength(minWidth);

}

else

{

SplitterColumn.Width = new GridLength(newWidth);

}

}

public void HandleLocateInTreeRequest(LocateInTreeRequest request)

{

CodeStructureTab.SelectedIndex = 0;

TreeControl.HandleLocateInTreeRequest(request);

}

private void RootWindow_Closing(object sender, CancelEventArgs e)

{

if (DataContext is MainViewModel mainVm)

{

e.Cancel = !mainVm.OnClosing();

}

}

public void SetViewer(GraphViewer explorationGraphViewer, IPublisher publisher)

{

ExplorationControl.SetViewer(explorationGraphViewer, publisher);

}

private void OnKeyDown(object sender, KeyEventArgs e)

{

if (WorkingArea.SelectedIndex == 0)

{

// Code explorer

var mainVm = ExplorationControl.DataContext as MainViewModel;

var graphVm = mainVm?.GraphViewModel;

if (graphVm != null && graphVm.TryHandleKeyDown(e))

{

e.Handled = true;

}

}

}

}