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

namespace Mesen.GUI.Debugger.Controls
{
	public partial class ctrlLabelList : UserControl
	{
		public event EventHandler OnLabelSelected;
		public ctrlLabelList()
		{
			InitializeComponent();
		}

		public void UpdateLabelList()
		{
			Int32[] entryPoints = InteropEmu.DebugGetFunctionEntryPoints();

			lstLabels.BeginUpdate();
			lstLabels.Items.Clear();
			foreach(KeyValuePair<UInt32, CodeLabel> kvp in LabelManager.GetLabels()) {
				if(kvp.Value.Label.Length > 0) {
					ListViewItem item = lstLabels.Items.Add(kvp.Value.Label);

					Int32 relativeAddress = InteropEmu.DebugGetRelativeAddress(kvp.Value.Address);
					if(relativeAddress >= 0) {
						item.SubItems.Add("$" + relativeAddress.ToString("X4"));
					} else {
						item.SubItems.Add("[n/a]");
						item.ForeColor = Color.Gray;
						item.Font = new Font(item.Font, FontStyle.Italic);
					}
					item.SubItems.Add("$" + kvp.Value.Address.ToString("X4"));
					item.SubItems[1].Tag = kvp.Value.Address;

					item.Tag = relativeAddress;
				}
			}
			lstLabels.Sort();
			lstLabels.EndUpdate();
		}

		private void lstLabels_DoubleClick(object sender, EventArgs e)
		{
			if(lstLabels.SelectedItems.Count > 0) {
				Int32 relativeAddress = (Int32)lstLabels.SelectedItems[0].Tag;

				if(relativeAddress >= 0) {
					OnLabelSelected?.Invoke(relativeAddress, e);
				}
			}
		}

		private void mnuActions_Opening(object sender, CancelEventArgs e)
		{
			mnuDelete.Enabled = lstLabels.SelectedItems.Count > 0;
		}

		private void mnuDelete_Click(object sender, EventArgs e)
		{
			foreach(ListViewItem item in lstLabels.SelectedItems) {
				LabelManager.DeleteLabel((UInt32)item.SubItems[1].Tag);
			}
		}
	}
}