using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using DirectUSB;

namespace Fron
{
  public partial class SelectVariable : Form
  {
    #region Declarations

    private TIDevice _device;
    private List<ulong> _visibleTypes;
    private List<VariableInformation> _variables;

    #endregion

    #region Constructors / Teardown

    public SelectVariable(TIDevice device)
    {
      InitializeComponent();

      _device = device;
    }

    public SelectVariable(TIDevice device, List<ulong> visibleTypes)
    {
      InitializeComponent();

      _device = device;
      _visibleTypes = visibleTypes;
    }

    #endregion

    #region Public Properties

    public VariableInformation SelectedVariable
    {
      get
      {
        VariableInformation ret = null;

        if (dgvVariables.SelectedRows.Count > 0)
        {
          ret = dgvVariables.SelectedRows[0].DataBoundItem as VariableInformation;
        }

        return ret;
      }
    }

    #endregion

    #region Event Handlers

    private void SelectVariable_Load(object sender, EventArgs e)
    {
      btnRefresh.PerformClick();
    }

    private void btnSelect_Click(object sender, EventArgs e)
    {
      this.DialogResult = DialogResult.OK;
      this.Close();
    }

    private void btnCancel_Click(object sender, EventArgs e)
    {
      this.DialogResult = DialogResult.Cancel;
      this.Close();
    }

    #endregion

    private void btnRefresh_Click(object sender, EventArgs e)
    {
      bool wasEnabled = this.Enabled;
      this.Enabled = false;

      if (_device != null)
      {
        _device.Connect();
        int size = _device.SendNegotiateBufferSize(0x400);
        _device.SendPingSetMode(DirectUSB.VirtualPackets.PingSetModePacket.CalculatorMode.Normal, 0x07D0);

        var attributes = new List<DirectUSB.Attributes.Attribute.AttributeType>();
        attributes.Add(DirectUSB.Attributes.Attribute.AttributeType.VariableSize);
        attributes.Add(DirectUSB.Attributes.Attribute.AttributeType.VariableType);
        attributes.Add(DirectUSB.Attributes.Attribute.AttributeType.ArchivedStatus);

        _variables = new List<VariableInformation>();
        foreach (var v in _device.SendDirectoryListing(attributes))
        {
          if (_visibleTypes == null || _visibleTypes.Count == 0 || _visibleTypes.Contains(v.VariableType.Value))
            _variables.Add(v);
        }

        dgvVariables.AutoGenerateColumns = false;
        dgvVariables.DataSource = _variables;
      }

      this.Enabled = wasEnabled;
    }
  }
}