using Telerik.WinControls;
using Telerik.WinControls.UI;

namespace Pilz.UI.WinForms.Telerik.Controls.RadListView;

public class GalleryIconListViewVisualItem : IconListViewVisualItem
{
    public event EventHandler? ButtonClicked;

    private readonly RadPanelElement panel = new();
    private readonly StackLayoutElement stack = new();
    private readonly LightVisualElement titleElem = new();
    private readonly LightVisualElement imgElem = new();
    private readonly LightVisualButtonElement buttonElem = new();

    protected override Type ThemeEffectiveType => typeof(IconListViewVisualItem);

    public RadSvgImage ButtonSvgImage
    {
        get => buttonElem.SvgImage;
        set => buttonElem.SvgImage = value;
    }

    public bool ButtonVisible
    {
        get => buttonElem.Visibility != ElementVisibility.Collapsed;
        set => buttonElem.Visibility = value ? ElementVisibility.Hidden : ElementVisibility.Collapsed;
    }

    protected override void CreateChildElements()
    {
        base.CreateChildElements();

        panel.StretchHorizontally = true;
        panel.StretchVertically = true;
        panel.ShouldHandleMouseInput = false;
        panel.NotifyParentOnMouseInput = true;
        panel.PanelBorder.Visibility = ElementVisibility.Collapsed;

        stack.Orientation = Orientation.Vertical;
        stack.StretchHorizontally = true;
        stack.StretchVertically = true;
        stack.ShouldHandleMouseInput = false;
        stack.NotifyParentOnMouseInput = true;

        imgElem.Margin = new Padding(0, 10, 0, 10);
        imgElem.ShouldHandleMouseInput = false;
        imgElem.NotifyParentOnMouseInput = true;

        titleElem.Margin = new Padding(0, 10, 0, -10);
        titleElem.AutoSize = true;
        titleElem.ShouldHandleMouseInput = false;
        titleElem.NotifyParentOnMouseInput = true;

        buttonElem.Size = new Size(20, 20);
        buttonElem.ImageDrawType = ImageDrawType.Svg;
        buttonElem.ShouldHandleMouseInput = true;
        buttonElem.NotifyParentOnMouseInput = true;
        buttonElem.Click += ButtonElem_Click;
        buttonElem.Visibility = ElementVisibility.Collapsed;

        stack.Children.Add(imgElem);
        stack.Children.Add(titleElem);
        panel.Children.Add(stack);
        panel.Children.Add(buttonElem);
        Children.Add(panel);
    }

    private void ButtonElem_Click(object? sender, EventArgs e)
    {
        ButtonClicked?.Invoke(this, e);
    }

    protected override void DoMouseEnter(EventArgs e)
    {
        base.DoMouseEnter(e);
        if (buttonElem.Visibility == ElementVisibility.Hidden)
            buttonElem.Visibility = ElementVisibility.Visible;
    }

    protected override void DoMouseLeave(EventArgs e)
    {
        base.DoMouseLeave(e);
        if (buttonElem.Visibility == ElementVisibility.Visible)
            buttonElem.Visibility = ElementVisibility.Hidden;
    }

    protected override void ArrangeContentCore(RectangleF clientRect)
    {
        base.ArrangeContentCore(clientRect);
        buttonElem.Arrange(new RectangleF(
            panel.Size.Width - buttonElem.DesiredSize.Width - buttonElem.Padding.Right,
            buttonElem.Padding.Top,
            buttonElem.DesiredSize.Width,
            buttonElem.DesiredSize.Height));
    }

    protected override void SynchronizeProperties()
    {
        base.SynchronizeProperties();
        DrawText = false;
        DrawImage = false;
        titleElem.Text = Data.Text;
        imgElem.Image = Data.Image;
    }
}