//This file is part of SECONDO.

//Copyright (C) 2004, University in Hagen, Department of Computer Science, 
//Database Systems for New Applications.

//SECONDO 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.

//SECONDO 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 SECONDO; if not, write to the Free Software
//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

package  viewer.hoese.algebras;

import  java.awt.geom.*;
import  java.awt.*;
import  viewer.*;
import viewer.hoese.*;
import  sj.lang.ListExpr;
import  java.util.*;
import  javax.swing.*;
import tools.Reporter;


/**
 * A displayclass for the intimeline-type (spatiotemp algebra), 2D with TimePanel
 */
public class Dsplintimeline extends Dsplline implements Timed {
    Interval TimeBounds;
   private String entry;
   private boolean defined;  

  /** A method of the Timed-Interface
   * 
   * @return the global time boundaries [min..max] this instance is defined at
   * @see <a href="Dsplintimelinesrc.html#getTimebounds">Source</a>
   */
  public Interval getBoundingInterval () {
    return  TimeBounds;
  }

  /**
   * A method of the Timed-Interface to render the content of the TimePanel
   * @param PixelTime pixel per hour
   * @return A JPanel component with the renderer
   * @see <a href="Dsplintimeregionsrc.html#getTimeRenderer">Source</a>
   */
  public JPanel getTimeRenderer (double PixelTime) {
    if(!defined){
       return new JPanel();
    }
    int start = 0;              
    JLabel label = new JLabel("|"+LEUtils.convertTimeToString(TimeBounds.getStart()).substring(11, 
        16), JLabel.LEFT);
    label.setBounds(start, 15, 100, 15);
    label.setVerticalTextPosition(JLabel.CENTER);
    label.setHorizontalTextPosition(JLabel.RIGHT);
    JPanel jp = new JPanel(null);
    jp.setPreferredSize(new Dimension(100, 25));
    jp.add(label);
    //Add labels to the JPanel. 
    return  jp;
  }


  /**
   * Scans the representation of an instant datatype 
   * @param v An instant value
   * @see sj.lang.ListExpr
   * @see <a href="Dsplintimelinesrc.html#ScanValue">Source</a>
   */
  public String getString (ListExpr v) {
    if(isUndefined(v)){
      defined=false;
      return "undefined";
    }
    Double d;
    if (v.listLength() != 2) {   
      err=true;
      defined = false;
      return "<error>";
    }
    d = LEUtils.readInstant(v.first());
    if (d == null) {
      err = true;
      defined=false;
      return "<error>";
    }
    TimeBounds = new Interval(d.doubleValue(), d.doubleValue(), true, true);
    super.ScanValue(v.second());
    return "intimeline";
  }

  public void init (String name, int nameWidth, int indent, ListExpr type, ListExpr value, QueryResult qr) {
    AttrName = extendString(name,nameWidth, indent);
    String v = getString(value);
    entry = type.symbolValue()+":"+v;
    if(!err){
        qr.addEntry(this);
    }else{
        qr.addEntry(entry);
    }
    bounds = new Rectangle2D.Double();
    bounds.setRect(GP.getBounds2D());
  }


  public String toString(){
     return entry;
  }


  /**
   * Tests if a given position is near (10pxs) of this line, by iterating over all segments.
   * but only if ActualTime == defined time
   * @param xpos The x-Position to test.
   * @param ypos The y-Position to test.
   * @param scalex The actual x-zoomfactor 
   * @param scaley The actual y-zoomfactor
   * @return true if x-, ypos is contained in this points type
   * @see <a href="Dsplintimepointssrc.html#contains">Source</a>
   */
  public boolean contains (double xpos, double ypos, double scalex, double scaley) {
    double t = RefLayer.getActualTime();
    if (Math.abs(t - TimeBounds.getStart()) < 0.000001)
      return  super.contains(xpos, ypos, scalex, scaley); 
    else 
      return  false;
  }
  /** A method of the Timed-Interface
   * @return The Vector representation of the time intervals this instance is defined at 
   * @see <a href="Dsplintimelinesrc.html#getIntervals">Source</a>
   */
  public Vector getIntervals(){
    Vector v=new Vector(1,0);
    v.add(TimeBounds);
    return v;
    } 

}