using System.Drawing;

namespace System.Windows.Forms
{
    public class Panel : ContainerControl
    {
        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);
            if (BorderStyle != BorderStyle.None)
                this.DrawVisualStyleBorder(e.Graphics, new Rectangle(0, 0, Width - 1, Height - 1));
        }
    }

    public class PanelBase : ContainerControl
    {
        protected System.Windows.Controls.ContentControl contentControl;
        protected System.Windows.Controls.Panel panel;

        public double MaxWidth
        {
            get => control.MaxWidth;
            set => control.MaxWidth = value;
        }

        public Windows.HorizontalAlignment HorizontalAlignment
        {
            get => control.HorizontalAlignment; 
            set => control.HorizontalAlignment = value;
        }

        public Windows.VerticalAlignment VerticalAlignment
        {
            get => control.VerticalAlignment; 
            set => control.VerticalAlignment = value;
        }

        protected void SetPanel(System.Windows.Controls.Panel panel)
        {
            contentControl = new System.Windows.Controls.ContentControl();
            this.panel = panel;
            SetContentControl(contentControl, contentControl, panel);
            HorizontalAlignment = Windows.HorizontalAlignment.Stretch;
            VerticalAlignment = VerticalAlignment.Stretch;
            panel.ClearValue(FrameworkElement.FlowDirectionProperty);
        }

        internal override void AddChild(Control child)
        {
            var c = child.control;
            c.Margin = new System.Windows.Thickness(c.Margin.Left + Margin.Left, c.Margin.Top + Margin.Top, c.Margin.Right + Margin.Right, c.Margin.Bottom + Margin.Bottom);
            panel.Children.Add(c);
        }

        internal override void RemoveChild(Control child)
        {
            panel.Children.Remove(child.control);
        }

        internal override void SetChildIndex(Control child, int index)
        {
            panel.Children.Insert(index, child.control);
        }

        protected override void SetControlWidth(int value)
        {
        }

        protected override void SetControlHeight(int value)
        {
        }

        protected override void SetControlLeft(int value)
        {
        }

        protected override void SetControlTop(int value)
        {
        }
    }

    // light version of Panel which is also based on Grid, but w/o owner draw control
    public class GridPanel : PanelBase
    {
        public GridPanel()
        {
            SetPanel(new System.Windows.Controls.Grid());
        }
    }

    public class StackedPanel : PanelBase
    {
        private System.Windows.Controls.StackPanel stackPanel;

        public bool Vertical
        {
            get => stackPanel.Orientation == Windows.Controls.Orientation.Vertical;
            set => stackPanel.Orientation = value ? Windows.Controls.Orientation.Vertical : Windows.Controls.Orientation.Horizontal;
        }

        public StackedPanel()
        {
            stackPanel = new System.Windows.Controls.StackPanel();
            SetPanel(stackPanel);
        }
    }

    public class WrappedPanel : PanelBase
    {
        private System.Windows.Controls.WrapPanel wrapPanel;

        public WrappedPanel()
        {
            wrapPanel = new System.Windows.Controls.WrapPanel();
            SetPanel(wrapPanel);
        }
    }

    public class DockedPanel : PanelBase
    {
        private System.Windows.Controls.DockPanel dockPanel;

        public DockStyle DockStyle { get; set; }

        internal override void AddChild(Control child)
        {
            base.AddChild(child);
            if (DockStyle == DockStyle.Top)
                System.Windows.Controls.DockPanel.SetDock(child.control, Windows.Controls.Dock.Top);
            else if (DockStyle == DockStyle.Bottom)
                System.Windows.Controls.DockPanel.SetDock(child.control, Windows.Controls.Dock.Bottom);
            else if (DockStyle == DockStyle.Left)
                System.Windows.Controls.DockPanel.SetDock(child.control, Windows.Controls.Dock.Left);
            else if (DockStyle == DockStyle.Right)
                System.Windows.Controls.DockPanel.SetDock(child.control, Windows.Controls.Dock.Right);
        }

        public DockedPanel()
        {
            dockPanel = new System.Windows.Controls.DockPanel();
            dockPanel.LastChildFill = true;
            SetPanel(dockPanel);
        }
    }

}