/*

  * Created on 21-Dec-2007

  * Copyright (C) 2006 by Andrea Vacondio.

  *

  * 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.

  * 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., 

  *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

  */

 package org.pdfsam.guiclient.commons.business.listeners.adapters;

 import java.awt.event.MouseAdapter;

 import java.awt.event.MouseEvent;

 import javax.swing.table.JTableHeader;

 import javax.swing.table.TableColumnModel;

 import org.pdfsam.guiclient.commons.models.AbstractPdfSelectionTableModel;

 import org.pdfsam.guiclient.commons.models.SortablePdfSelectionTableModel;

 /**

  * Listener for the mouse clicks on the table header

  * @author Andrea Vacondio

  *

  */

 public class PdfSelectionMouseHeaderAdapter extends MouseAdapter {

         private AbstractPdfSelectionTableModel tableModel;

         public PdfSelectionMouseHeaderAdapter(AbstractPdfSelectionTableModel tableModel){

                 this.tableModel = tableModel;

         }

         public void mouseClicked(MouseEvent e) {

                 if(tableModel.isSortable()){

                 JTableHeader h = (JTableHeader) e.getSource();

                 TableColumnModel columnModel = h.getColumnModel();

                 int viewColumn = columnModel.getColumnIndexAtX(e.getX());

                 int column = columnModel.getColumn(viewColumn).getModelIndex();

                 if (column != -1 && column != SortablePdfSelectionTableModel.PASSWORD && column != SortablePdfSelectionTableModel.ROW_NUM) {

                     int sortType = (tableModel.getSortingState().getCol() == column)?tableModel.getSortingState().getSortType(): SortablePdfSelectionTableModel.NOT_SORTED;

                     // Cycle the sorting states through {NOT_SORTED, ASCENDING, DESCENDING} or 

                     // {NOT_SORTED, DESCENDING, ASCENDING} depending on whether shift is pressed. 

                     sortType = sortType + (e.isShiftDown() ? -1 : 1);

                     sortType = (sortType + 4) % 3 - 1; // signed mod, returning {-1, 0, 1}

                     tableModel.setSortingState(tableModel.new SortingState(column, sortType));

                     h.repaint();

                 }

         }

     }

 }