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/*
 * Copyright (C) 2006 Eskil Bylund
 *
 * This program 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 2 of the License, or
 * (at your option) any later version.
 * 
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

using System;

using Gtk;
using Glade;

namespace DCSharp.GUI{
  public abstract class Page : VBox
  {
    public event EventHandler PageChanged;
    public event EventHandler StatusChanged;
    
    private Glade.XML xml;
    
    [Widget]
    private Widget page;
    
    #region Constructors
    
    public Page(string resource) : base()
    {
      xml = new Glade.XML (null, resource, "page", null);
      xml.BindFields (this);
      
      BorderWidth = 6;
      Spacing = 6;
      
      PackEnd(page);
    }
    
    #endregion
    
    #region Properties
    
    public abstract string Title
    {
      get;
    }
    
    public abstract Gdk.Pixbuf Icon
    {
      get;
    }
    
    public abstract string Tooltip
    {
      get;
    }
    
    private string status = String.Empty;
    
    public virtual string Status
    {
      get
      {
        return status;
      }
      protected set
      {
        status = value;
        
        OnStatusChanged();
      }
    }
    
    private bool isWorking;
    
    public virtual bool IsWorking
    {
      get
      {
        return isWorking;
      }
      protected set
      {
        if (value != isWorking)
        {
          isWorking = value;
          
          OnStatusChanged();
          OnPageChanged();
        }
      }
    }
    
    public virtual ActionGroup Actions
    {
      get
      {
        return null;
      }
    }
    
    public virtual string UI
    {
      get
      {
        return null;
      }
    }
    
    #endregion
    
    #region Methods
    
    protected void Add(MessageArea dialog)
    {
      PackStart(dialog, false, false, 0);
    }
    
    protected void OnPageChanged()
    {
      if (PageChanged != null)
      {
        PageChanged(this, EventArgs.Empty);
      }
    }
    
    protected void OnStatusChanged()
    {
      if (StatusChanged != null)
      {
        StatusChanged(this, EventArgs.Empty);
      }
    }
    
    #endregion
  }  
}