jlistnavigator.java

是一个专门设计用于触摸屏的POS(point of sales)应用软件

//    Tina POS is a point of sales application designed for touch screens.
//    Copyright (C) 2005 Adrian Romero Corchado.
//    http://sourceforge.net/projects/tinapos
//
//    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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

package net.adrianromero.data.gui;

import java.awt.Dimension;
import java.awt.Rectangle;
import javax.swing.ListCellRenderer;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import net.adrianromero.basic.BasicException;
import net.adrianromero.data.loader.LocalRes;
import net.adrianromero.data.user.BrowsableData;
import net.adrianromero.data.user.BrowsableEditableData;
import net.adrianromero.data.user.BrowseListener;

public class JListNavigator extends javax.swing.JPanel implements BrowseListener, ListSelectionListener {
    
    protected BrowsableEditableData m_bd;
    
    /** Creates new form JListBrowse */
    public JListNavigator(BrowsableEditableData bd) {
        this(bd, false);
    }
    
    public JListNavigator(BrowsableEditableData bd, boolean bTouchable) {
        
        m_bd = bd;
        
        initComponents();
        
        if (bTouchable) {
            jScrollPane1.getVerticalScrollBar().setPreferredSize(new Dimension(35, 35));
            jScrollPane1.setHorizontalScrollBarPolicy(javax.swing.ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
            jScrollPane1.setVerticalScrollBarPolicy(javax.swing.ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
        }


        m_jlist.addListSelectionListener(this);        
        m_jlist.setModel(m_bd.getListModel());
        
        m_bd.addBrowseListener(this);
    }

    public void setCellRenderer(ListCellRenderer cellRenderer) {
        m_jlist.setCellRenderer(cellRenderer);
    }
    
    public void updateIndex(int iIndex, int iCounter) {
        
        if (iIndex >= 0 && iIndex < iCounter) {
            m_jlist.setSelectedIndex(iIndex);
        } else {
            m_jlist.setSelectedIndex(-1);
        }
    } 
    
    public void valueChanged(ListSelectionEvent evt) {
        
        if (!evt.getValueIsAdjusting()) {
            int i = m_jlist.getSelectedIndex();
            if (i >= 0) {
                if (!m_bd.isAdjusting()) {

                    try {
                        m_bd.moveTo(i);
                    } catch (BasicException eD) {
                        MessageInf msg = new MessageInf(MessageInf.SGN_NOTICE, LocalRes.getIntString("message.nomove"), eD);
                        msg.show(this);
                        // Y ahora tendriamos que seleccionar silenciosamente el registro donde estabamos.
                    }
                }
                // Lo hago visible...
                Rectangle oRect = m_jlist.getCellBounds(i, i);
                m_jlist.scrollRectToVisible(oRect);       
            }
        }
    }    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
    private void initComponents() {
        jScrollPane1 = new javax.swing.JScrollPane();
        m_jlist = new javax.swing.JList();

        setLayout(new java.awt.BorderLayout());

        setPreferredSize(new java.awt.Dimension(200, 2));
        m_jlist.setSelectionMode(javax.swing.ListSelectionModel.SINGLE_SELECTION);
        m_jlist.setFocusable(false);
        m_jlist.setRequestFocusEnabled(false);
        jScrollPane1.setViewportView(m_jlist);

        add(jScrollPane1, java.awt.BorderLayout.CENTER);

    }// </editor-fold>//GEN-END:initComponents
    
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JList m_jlist;
    // End of variables declaration//GEN-END:variables
    
}