using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;

namespace QuikDawEditor;

public class HideableGridSplitter : GridSplitter
{
    private GridLength heightTop = new GridLength(6, GridUnitType.Star);
    private GridLength heightBottom = new GridLength(4, GridUnitType.Star);

    public HideableGridSplitter()
    {
        this.IsVisibleChanged += HideableGridSplitter_IsVisibleChanged;
    }

    void HideableGridSplitter_IsVisibleChanged(object sender, DependencyPropertyChangedEventArgs e)
    {
        Grid parent = base.Parent as Grid;
        if (parent == null)
            return;
        
        var topRow = parent.RowDefinitions[0];
        var splitterRow = parent.RowDefinitions[1];
        var botRow = parent.RowDefinitions[2];

        if (this.Visibility == Visibility.Visible)
        {
            topRow.Height = heightTop;
            botRow.Height = heightBottom;
            splitterRow.Height = new GridLength(10);
        }
            
        else
        {
            topRow.Height = new GridLength(10, GridUnitType.Star);
            botRow.Height = new GridLength(0, GridUnitType.Star);
            splitterRow.Height = new GridLength(0);
        }
    }
}