/*
 * Jalview - A Sequence Alignment Editor and Viewer
 * Copyright (C) 2005 AM Waterhouse, J Procter, G Barton, M Clamp, S Searle
 *
 * 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 Street, Fifth Floor, Boston, MA  02110-1301, USA
 */
package jalview.appletgui;

import jalview.datamodel.*;
import java.awt.*;
import java.util.*;
import java.awt.event.*;


public class FeatureSettings extends Panel implements ItemListener,
    MouseListener, MouseMotionListener
{
  final FeatureRenderer fr;
  final AlignmentPanel ap;
  final AlignViewport av;
  final Frame frame;

  public FeatureSettings(AlignViewport av, final AlignmentPanel ap)
  {
    this.ap = ap;
    this.av = av;
    fr = ap.seqPanel.seqCanvas.getFeatureRenderer();

    setTableData();

    frame = new Frame();
    frame.add(this);
    int height = this.getComponentCount()*50;
    if (height>400)
      height = 400;

    jalview.bin.JalviewLite.addFrame(frame, "Feature Settings", 200,
                                     height);
  }

  void setTableData()
  {
    Vector allFeatures = new Vector();
    Vector features;
    Enumeration e;
    SequenceFeature sf;

    for (int i = 0; i < av.alignment.getHeight(); i++)
    {
      features = av.alignment.getSequenceAt(i).getSequenceFeatures();
      if (features == null)
        continue;

      e = features.elements();
      while (e.hasMoreElements())
      {
        sf = (SequenceFeature) e.nextElement();
        if (!allFeatures.contains(sf.getType()))
        {
          allFeatures.addElement(sf.getType());
        }
      }
    }

    int fSize = allFeatures.size();

    String type;
    this.setLayout(new GridLayout(fSize, 2, 10,5));

    for (int i = 0; i < fSize; i++)
    {
      type = allFeatures.elementAt(i).toString();
      Color col = fr.getColour(type);
      boolean displayed = true;
      if(fr.featuresDisplayed!=null)
        displayed = fr.featuresDisplayed.contains(type);

      Checkbox check = new Checkbox(type, displayed);
      check.addMouseListener(this);
      check.addMouseMotionListener(this);
      check.setBackground(col);
      check.addItemListener(this);
      add(check);
    }
    validate();
  }

  public void itemStateChanged(ItemEvent evt)
  {
    Component [] comps = this.getComponents();
    int cSize = comps.length;

    Object [][] data = new Object[cSize][3];

    for(int i=0; i<cSize; i++)
    {
      Checkbox check = (Checkbox)comps[i];
      data[i][0] = check.getLabel();
      data[i][1] = fr.getColour(check.getLabel());
      data[i][2] = new Boolean(check.getState());
    }

    fr.setFeaturePriority(data);
    ap.seqPanel.seqCanvas.repaint();
  }

  Checkbox selectedCheck;
  boolean dragging = false;

  public void mousePressed(MouseEvent evt)
  {
    selectedCheck = (Checkbox)evt.getSource();
  }

  public void mouseDragged(MouseEvent evt)
  {
      dragging = true;
  }

  public void mouseReleased(MouseEvent evt)
  {
    Component comp = null;
    Checkbox  target = null;

    int height = evt.getY()+evt.getComponent().getLocation().y;

    if(height > this.getSize().height)
     {
       comp = this.getComponent(this.getComponentCount()-1);
     }
     else if(height < 0)
     {
       comp = this.getComponent(0);
     }
     else
     {
       comp = this.getComponentAt(evt.getX(),
                                  evt.getY() +
                                  evt.getComponent().getLocation().y);
     }

    if(comp!=null && comp instanceof Checkbox)
      target = (Checkbox)comp;

    if (selectedCheck != null && target != null && selectedCheck != target)
    {
      int targetIndex = -1;
      for(int i=0; i<this.getComponentCount(); i++)
      {
          if(target==this.getComponent(i))
          { targetIndex = i; break; }
      }


      this.remove(selectedCheck);
      this.add(selectedCheck, targetIndex);
      validate();
    }
  }


  public void mouseEntered(MouseEvent evt){}
  public void mouseExited(MouseEvent evt){}
  public void mouseClicked(MouseEvent evt){}
  public void mouseMoved(MouseEvent evt){}
}