namespace System.Windows.Forms
{
    public class ToolStripComboBox : ToolStripItem
    {
        public ComboBoxBase ComboBox { get; }

        public ComboBoxStyle DropDownStyle
        {
            get => ComboBox.DropDownStyle;
            set => ComboBox.DropDownStyle = value;
        }

        public override string Text
        {
            get => ComboBox.Text;
            set => ComboBox.Text = value;
        }

        public int ItemHeight
        {
            get => ComboBox.ItemHeight;
            set => ComboBox.ItemHeight = value;
        }

        public bool IntegralHeight
        {
            get => ComboBox.IntegralHeight;
            set => ComboBox.IntegralHeight = value;
        }

        public DrawMode DrawMode
        {
            get => ComboBox.DrawMode; 
            set => ComboBox.DrawMode = value;
        }

        public int DropDownWidth
        {
            get => ComboBox.DropDownWidth;
            set => ComboBox.DropDownWidth = value;
        }

        public int DropDownHeight
        {
            get => ComboBox.DropDownHeight;
            set => ComboBox.DropDownHeight = value;
        }

        public int MaxDropDownItems
        {
            get => ComboBox.MaxDropDownItems;
            set => ComboBox.MaxDropDownItems = value;
        }

        public ListControl.ObjectCollection Items => ComboBox.Items;

        public int SelectedIndex
        {
            get => ComboBox.SelectedIndex;
            set => ComboBox.SelectedIndex = value;
        }

        public object SelectedItem
        {
            get => ComboBox.SelectedItem;
            set => ComboBox.SelectedItem = value;
        }

        public bool Sorted
        {
            get => ComboBox.Sorted;
            set => ComboBox.Sorted = value;
        }

        public event EventHandler SelectedIndexChanged;
        public event EventHandler SelectedValueChanged;

        protected override void SetControlHeight(int value) { }

        protected virtual void OnSelectedIndexChanged(EventArgs e) => SelectedIndexChanged?.Invoke(this, e);
        
        protected virtual void OnSelectedValueChanged(EventArgs e) => SelectedValueChanged?.Invoke(this, e);

        public override void ApplyStyle(ToolStripProfessionalRenderer r)
        {
            var combo = ComboBox.control;
            combo.Foreground = r.Foreground;
            combo.Resources["ComboBox.Static.Background"] = r.ComboBoxStaticBackground;
            combo.Resources["ComboBox.Static.Border"] = r.ComboBoxStaticBorder;
            combo.Resources["ComboBox.Static.Glyph"] = r.ComboBoxStaticGlyph;
            combo.Resources["ComboBox.MouseOver.Background"] = r.ComboBoxMouseOverBackground;
            combo.Resources["ComboBox.MouseOver.Border"] = r.ComboBoxMouseOverBorder;
            combo.Resources["ComboBox.MouseOver.Glyph"] = r.ComboBoxMouseOverGlyph;
            combo.Resources["ComboBox.Disabled.Background"] = r.ComboBoxDisabledBackground;
            combo.Resources["ComboBox.Disabled.Foreground"] = r.DisabledForeground;
            combo.Resources["ComboBox.Disabled.Border"] = r.ComboBoxDisabledBorder;
            combo.Resources["ComboBox.Disabled.Glyph"] = r.ComboBoxDisabledGlyph;
        }

        public ToolStripComboBox()
        {
            ComboBox = new InnerComboBox();
            SetItemControl(ComboBox);
            ComboBox.control.VerticalAlignment = VerticalAlignment.Stretch;
            ComboBox.control.Margin = new Thickness(0, 0, 4, 0);
            ComboBox.TextChanged += (sender, e) => OnTextChanged(e);
            ComboBox.SelectedIndexChanged += (sender, e) => OnSelectedIndexChanged(e);
            ComboBox.SelectedValueChanged += (sender, e) => OnSelectedValueChanged(e);

            AutoSize = false;
        }

        private class InnerComboBox : ComboBoxBase
        {
            public InnerComboBox()
            {
                SetComboBox(new CustomControls.ToolStripComboBox());
            }
        }
    }
}