Application: gvSIG desktop » gvSIG raster

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2012 gvSIG Association.

 *

 * 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.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.raster.swing.impl.pagedtable;

import java.awt.Dimension;

import java.awt.GridBagConstraints;

import java.awt.GridBagLayout;

import java.util.Observable;

import java.util.Observer;

import javax.swing.ImageIcon;

import javax.swing.JButton;

import javax.swing.JLabel;

import javax.swing.JPanel;

import org.gvsig.andami.IconThemeHelper;

import org.gvsig.i18n.Messages;

public class PaginationBarPanel extends JPanel implements Observer {

        private static final long     serialVersionUID    = 1L;

        private JButton               up                  = null;

        private JButton               down                = null;

        private JLabel                selectedPag         = null;

        private JLabel                nPages              = null;

        private String                pathToImagesForTest = "/src/main/resources/images/";

        public PaginationBarPanel(TableControllerListener tableListener) {

                if(tableListener != null)

                        tableListener.setPaginationBarPanel(this);

                initialize(tableListener);

        }

        private void initialize(TableControllerListener tableListener) {

                this.setLayout(new GridBagLayout());

                GridBagConstraints gbc = new GridBagConstraints();

                gbc.fill = GridBagConstraints.VERTICAL;

                gbc.anchor = GridBagConstraints.NORTH;

                add(getButtonUp(), gbc);

                gbc.anchor = GridBagConstraints.CENTER;

                gbc.gridy = 1;

                gbc.weighty = 1;

                JPanel p = new JPanel(new GridBagLayout());

                GridBagConstraints gbc1 = new GridBagConstraints();

                gbc1.fill = GridBagConstraints.NONE;

                gbc1.gridx = 0;

                gbc1.gridy = 0;

                p.add(getNPages(), gbc1);

                gbc1.gridy = 1;

                p.add(getSelectedPage(), gbc1);

                add(p, gbc);

                gbc.weighty = 0;

                gbc.anchor = GridBagConstraints.SOUTH;

                gbc.gridy = 2;

                add(getButtonDown(), gbc);

                getButtonUp().addActionListener(tableListener);

                getButtonDown().addActionListener(tableListener);

        }

        public JLabel getSelectedPage() {

                if(selectedPag == null)

                        selectedPag = new JLabel("-");

                return selectedPag;

        }

        public JLabel getNPages() {

                if(nPages == null)

                        nPages = new JLabel("-");

                return nPages;

        }

        private ImageIcon loadIcon(String iconName) {

                ImageIcon icon = null;

                try {

                        icon = IconThemeHelper.getImageIcon(iconName);

                } catch(NullPointerException e) {}

                if(icon == null) 

                        icon = new ImageIcon(System.getProperty("user.dir") + pathToImagesForTest + iconName + ".png", "");

                if(icon == null) 

                        icon = new ImageIcon(System.getProperty("user.dir") + pathToImagesForTest + iconName + ".gif", "");

                return icon;

        }

        public JButton getButtonUp() {

                if (up == null) {

                        up = new JButton("");

                        up.setEnabled(false);

                        up.setPreferredSize(new Dimension(22, 22));

                        up.setIcon(loadIcon("up-16x16"));

                        up.setActionCommand("");

                        up.setToolTipText(Messages.getText("prev_pag"));

                }

                return up;

        }

        public JButton getButtonDown() {

                if (down == null) {

                        down = new JButton("");

                        down.setEnabled(false);

                        down.setPreferredSize(new Dimension(22, 22));

                        down.setIcon(loadIcon("down-16x16"));

                        down.setActionCommand("");

                        down.setToolTipText(Messages.getText("next_pag"));

                }

                return down;

        }

        public void update(Observable o, Object arg) {

                Pager pager = (Pager)o;

                if(o instanceof Pager && arg instanceof Integer) {

                        if(pager.getPageCount() == 0) {

                                getNPages().setText("-");

                                getSelectedPage().setText("-");

                        } else {

                                getNPages().setText(pager.getPageCount() + "");

                                getSelectedPage().setText(pager.getSelectedPageNumber() + 1 + "");

                        }

                }

        }

}