/*

  This Source Code Form is subject to the terms of the Mozilla Public

  License, v. 2.0. If a copy of the MPL was not distributed with this

  file, You can obtain one at http://mozilla.org/MPL/2.0/.

  Copyright (C) 2011 Michael Möller <mmoeller@openhardwaremonitor.org>

*/

using System;

using System.Collections.Generic;

using System.Windows.Forms;

using OpenHardwareMonitor.Utilities;

namespace OpenHardwareMonitor.GUI {

  public class UserRadioGroup {

    private string name;

    private int value;

    private MenuItem[] menuItems;

    private event EventHandler changed;

    private PersistentSettings settings;

    public UserRadioGroup(string name, int value,

      MenuItem[] menuItems, PersistentSettings settings) {

      this.settings = settings;

      this.name = name;

      if (name != null)

        this.value = settings.GetValue(name, value);

      else

        this.value = value;

      this.menuItems = menuItems;

      this.value = Math.Max(Math.Min(this.value, menuItems.Length - 1), 0);

      for (int i = 0; i < this.menuItems.Length; i++) {

        this.menuItems[i].Checked = i == this.value;

        int index = i;

        this.menuItems[i].Click += delegate(object sender, EventArgs e) {

          this.Value = index;

        };

      }      

    }

    public int Value {

      get { return value; }

      set {

        if (this.value != value) {

          this.value = value;

          if (this.name != null)

            settings.SetValue(name, value);

          for (int i = 0; i < this.menuItems.Length; i++) 

            this.menuItems[i].Checked = i == value;

          if (changed != null)

            changed(this, null);

        }

      }

    }

    public event EventHandler Changed {

      add {

        changed += value;

        if (changed != null)

          changed(this, null);

      }

      remove {

        changed -= value;

      }

    }

  }

}