using System.Windows.Controls.Primitives;

namespace System.Windows.Forms
{
    public partial class ContextMenuStrip
    {
        private class PopupWrapper : IPopupWrapper
        {
            private CustomControls.ContextMenuStrip menu;
            private ContextMenuStrip owner;

            public bool IsOpen 
            { 
                get => menu.IsOpen;
                set
                {
                    menu.EnableQuickAccessToolbar = owner.EnableQuickAccessToolbar;
                    menu.SetIsOpen(value);
                }
            }
            public PlacementMode Placement { get => menu.Placement; set => menu.Placement = value; }
            public UIElement PlacementTarget { get => menu.PlacementTarget; set => menu.PlacementTarget = value; }
            public double HorizontalOffset { get => menu.HorizontalOffset; set => menu.HorizontalOffset = value; }
            public double VerticalOffset { get => menu.VerticalOffset; set => menu.VerticalOffset = value; }

            public event EventHandler Opened;
            public event EventHandler Closed;

            public void AddChild(Control child) => menu.Items.Add(child.control);

            public void RemoveChild(Control child) => menu.Items.Remove(child.control);

            public void SetChildIndex(Control child, int index) => menu.Items.Insert(index, child.control);

            public void ApplyStyle(ToolStripProfessionalRenderer r)
            {
                menu.Resources["Menu.Static.Background"] = r.MenuStaticBackground;
                menu.Resources["Menu.Static.Border"] = r.MenuStaticBorder;
                menu.Resources["Menu.Static.Foreground"] = r.Foreground;
                menu.Resources["Menu.Disabled.Foreground"] = r.DisabledForeground;
                menu.Resources["Menu.Margin.Background"] = r.MenuMarginBackground;
                menu.Resources["Menu.QAT.Background"] = r.MenuQATBackground;
            }

            public void FixupDpi()
            {
                // In case dpi was changed during app run, the menu may not be updated yet.
                // It will show odd font size at the first open. Correct that by supplying correct dpi from PlacementTarget object.
                if (menu.PlacementTarget != null)
                    Helper.SetFont(menu, Helper.GetDpiScale(menu.PlacementTarget), owner.Font);
                else
                    Helper.SetFont(menu, owner.Font);
            }

            public PopupWrapper(ContextMenuStrip owner)
            {
                menu = new();
                this.owner = owner;
                menu.Tag = owner;

                menu.Opened += (s, e) => Opened?.Invoke(this, EventArgs.Empty);
                menu.Closed += (s, e) => Closed?.Invoke(this, EventArgs.Empty);
            }
        }
    }
}