/*
Copyright @ 2001-2002, The Institute for Genomic Research (TIGR).
All rights reserved.
*/

/*
 * $RCSfile: MultiInoutOutputs.java,v $
 * $Revision: 1.3 $
 * $Date: 2003/02/06 21:35:38 $
 * $Author: jli $
 * $State: Exp $
 */

/******************************************************************************
 *  Author:   Jerry Li.
 *  Name:     MultiInputOutputs
 *  Date:     Created on 06/21/01; modified on 06/221/01
 *  Descpt:   A class that represents a set of paried input and output file names
 *****************************************************************************/
package org.tigr.util.swing;

import java.util.Vector;
import java.awt.GridBagLayout;
import javax.swing.border.BevelBorder;
import javax.swing.event.ListSelectionListener;
import javax.swing.event.ListSelectionEvent;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.ListSelectionModel;

import org.tigr.util.awt.GBA;

public class MultiInputOutputs extends JSplitPane {

  private JLabel inputLB, outputLB, fileNumLB;
  private JList inputList, outputList;
  private JPanel inputPL, outputPL;
  private JScrollPane inputSP, outputSP;
  private GBA gba;

  private final String NUM_FILE = "  Number of Files:  ";
  public final String OUT_READY = "outready";
  private int sizeX, sizeY;
  private boolean outputReady;

  public MultiInputOutputs() {
    super(JSplitPane.VERTICAL_SPLIT, true);
  }

  public MultiInputOutputs(int x, int y){
    super(JSplitPane.VERTICAL_SPLIT, true);
    sizeX = x;
    sizeY = y;
    outputReady = false;
    initil();
  }

  public void addDataToLists(Vector in, Vector out){
    inputList.setListData(in);
    outputList.setListData(out);
  }

  public int[] getSelectedInputIndices(){
    return inputList.getSelectedIndices();
  }

  public int getSelectedOutputIndex(){
    return outputList.getSelectedIndex();
  }

  public String getSelectedOutputName(int offset){
    return (String)outputList.getModel().getElementAt(offset);
  }

  public boolean isOutputReady() { return outputReady; }

  public void setInputLabel(String str){
    inputLB.setText(str);
  }

  public void setInputListData(Vector v){
    inputList.setListData(v);
  }

  public void setOutputLabel(String str){
    outputLB.setText(str);
  }

  public void setOutputListData(Vector v){
    outputList.setListData(v);
  }

  public void setOutputSelectedIndex(int indx){
    outputList.setSelectedIndex(indx);
  }

  public void setLabelTexts(String input, String output){
    inputLB.setText(input);
    outputLB.setText(output);
  }

  public void setSize(int x, int y){
    sizeX = x;
    sizeY = y;
    super.setSize(sizeX, sizeY);
  }

  public void showNumberOfFiles(int num){
    if(num > 0){
      fileNumLB.setText(NUM_FILE + num);
    } else {
      fileNumLB.setText(NUM_FILE);
    }
  }

  private void fireChanges(){
    this.firePropertyChange(OUT_READY, false, outputReady);
  }

  private void initil(){
    BevelBorder low = new BevelBorder(1);

    gba = new GBA();
    setSize(sizeX, sizeY);
    setDividerSize(4);
    setDividerLocation(0.5);

    inputLB = new JLabel("");
    outputLB = new JLabel("");

    inputPL = new JPanel(new GridBagLayout());
    outputPL = new JPanel(new GridBagLayout());
    super.setTopComponent(inputPL);
    super.setBottomComponent(outputPL);

    inputList = new JList();
    inputList.setBorder(low);
    actionHandler(inputList);

    inputSP = new JScrollPane(inputList);

    outputList = new JList();
    outputList.setBorder(low);
    outputList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    actionHandler(outputList);

    outputSP = new JScrollPane(outputList);

    fileNumLB = new JLabel(NUM_FILE);
    fileNumLB.setBorder(low);

    gba.add(inputPL, inputLB, 0, 0, 1, 1, 1, 0, GBA.H, GBA.C, 5, 10, 5, 2);
    gba.add(inputPL, inputSP, 0, 1, 1, 1, 1, 1, GBA.B, GBA.C, 1, 2, 5, 2);

    gba.add(outputPL, outputLB, 0, 0, 1, 1, 1, 0, GBA.H, GBA.W, 5, 10, 2, 2);
    gba.add(outputPL, outputSP, 0, 1, 1, 1, 1, 1, GBA.B, GBA.C, 1, 2, 5, 2);
    gba.add(outputPL, fileNumLB, 0, 2, 1, 1, 1, 0, GBA.H, GBA.C, 1, 2, 5, 2);
  }

  /***************************************************************************
   * <b>Description: </b>
   *   activate the buttons based on the contents of a JList object.
   * <p><b>Parameter: </b>
   * <br> l -- the Jlist object that emit the action event.
   **************************************************************************/
  private void actionHandler(JList l){
    final JList list = l;

    list.addListSelectionListener(new ListSelectionListener(){
      public void valueChanged(ListSelectionEvent lse){
        if(outputList.getModel().getSize() > 0){
          outputReady = true;
        } else {
          outputReady = false;
        }
        fireChanges();
      }
    });
  }
}