#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2012 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
 *
 * This file is part of HeuristicLab.
 *
 * HeuristicLab is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * HeuristicLab is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
 */
#endregion

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Reflection;
using HeuristicLab.DataImporter.Data.CommandBase;
using HeuristicLab.DataImporter.Data.Model;


namespace HeuristicLab.DataImporter.Data.View {
  public class CommandListViewItem<T> : ListViewItem, ICommandGenerator where T : ICommand {
    private ViewableCommandInfoAttribute commandInfo;
    public CommandListViewItem() {
      commandInfo = (ViewableCommandInfoAttribute)Attribute.GetCustomAttribute(typeof(T), typeof(ViewableCommandInfoAttribute));
      if (commandInfo == null)
        throw new ArgumentException("ViewableCommandInfoAttribute must be specified!");
      this.Text = commandInfo.Name;
      this.Group = new ListViewGroup(commandInfo.GroupName, commandInfo.GroupName);
    }

    public virtual ICommand GenerateCommand(DataSet dataSet) {
      T cmd;
      ColumnGroup activeColumnGroup = null;
      int[] selectedColumnIndizes = new int[0];
      if (dataSet.ActiveColumnGroups.Count() > 0)
        activeColumnGroup = dataSet.ActiveColumnGroups.ElementAt(0);
      if (activeColumnGroup != null)
        selectedColumnIndizes = activeColumnGroup.SelectedColumnIndexes;
      //call ctor according to super class
      if (typeof(T).IsSubclassOf(typeof(ColumnCommandBase)))
        cmd = (T)Activator.CreateInstance(typeof(T), new object[] { dataSet, activeColumnGroup.Name, activeColumnGroup.SelectedColumnIndexes[0] });
      else if (typeof(T).IsSubclassOf(typeof(ColumnGroupCommandWithAffectedColumnsBase)))
        cmd = (T)Activator.CreateInstance(typeof(T), new object[] { dataSet, activeColumnGroup.Name, selectedColumnIndizes });
      else if (typeof(T).IsSubclassOf(typeof(ColumnGroupCommandBase)))
        cmd = (T)Activator.CreateInstance(typeof(T), new object[] { dataSet, activeColumnGroup.Name });
      else if (typeof(T).IsSubclassOf(typeof(DataSetCommandWithAffectedColumnGroupsBase)))
        cmd = (T)Activator.CreateInstance(typeof(T), new object[] { dataSet, dataSet.ActiveColumnGroups.Select(x =>x.Name).ToList() });
      else
        cmd = (T)Activator.CreateInstance(typeof(T), new object[] { dataSet });

      if (commandInfo.OptionsView != null) {
        CommandViewDialog dlg = new CommandViewDialog();
        dlg.StartPosition = FormStartPosition.CenterParent;
        UserControl ctrl = (UserControl)Activator.CreateInstance(commandInfo.OptionsView,cmd);
        dlg.Panel.Controls.Add(ctrl);
        dlg.ShowDialog(this.ListView.TopLevelControl);
        if (dlg.DialogResult == DialogResult.Cancel)
          return null;
      }
      return cmd;
    }

    public bool Enabled(DataSetState state) {
      return commandInfo.State.Enabled(state);
    }
  }
}