using LibW4M.Data;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace W4Gui.Components
{
    public partial class CollectiveListAddDelete : UserControl
    {
        public event EventHandler<EventArgs> NewButton;
        public event EventHandler<EventArgs> DeleteButton;
        public CollectiveListAddDelete()
        {
            InitializeComponent();
            this.List.Unselected += List_Unselected; ;
            this.List.Selected += List_Selected; ;
        }

        protected virtual void OnUnselected(EventArgs e)
        {
            btnDel.Enabled = false;
        }

        protected virtual void OnSelected(EventArgs e)
        {
            btnDel.Enabled = true;
        }
        protected virtual void OnNewButton(EventArgs e)
        {
            EventHandler<EventArgs> handler = NewButton;
            if (handler != null)
            {
                handler(this, e);
            }
        }
        protected virtual void OnDeleteButton(EventArgs e)
        {
            EventHandler<EventArgs> handler = DeleteButton;
            if (handler != null)
            {
                handler(this, e);

                if (this.List.Items.Count <= 0)
                    this.btnDel.Enabled = false;
            }

        }

        private void List_Selected(object? sender, EventArgs e)
        {
            OnSelected(e);
        }

        private void List_Unselected(object? sender, EventArgs e)
        {
            OnUnselected(e);
        }
        private void btnAdd_Click(object? sender, EventArgs e)
        {
            OnNewButton(e);
        }

        private void btnDel_Click(object? sender, EventArgs e)
        {
            if (this.List.SelectedIndex >= 0)
                OnDeleteButton(e);
        }

    }
}