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.FlowLayout;

import java.awt.GridBagConstraints;

import java.awt.GridBagLayout;

import java.awt.event.MouseEvent;

import java.awt.event.MouseListener;

import java.util.List;

import javax.swing.JPanel;

import javax.swing.JTable;

import javax.swing.table.DefaultTableModel;

import javax.swing.table.TableColumn;

import org.gvsig.raster.swing.pagedtable.ModelLoader;

/**

 * Paged table

 * 

 * @author Nacho Brodin (nachobrodin@gmail.com)

 */

public class PagedTable extends JPanel implements MouseListener {

        private static final long          serialVersionUID       = 1L;

        private PagedJTable                jTable                 = null;

        private ModelLoader                modelLoader            = null;

        private DefaultTableModel          model                  = null;

        private PaginationBarPanel         paginationBar          = null;

        private TableEntryControllerPanel  tableEntryController   = null;

        private TableListener              tableListener          = null;

        private MoveRowsPanel              moveRowsPanel          = null;

        private boolean                    initTable              = false;

        private Pager                      pager                  = null;

        private int                        heightLine             = 16;

        public class PagedJTable extends JTable {

                private static final long serialVersionUID = 1L;

                public PagedJTable(DefaultTableModel model) {

                        super(model);

                }

                /**

                 * Reimplemented to calculate the number of pages when the component gets

                 * a resize event

                 */

                public void setBounds(int x, int y, int width, int height) {

                super.setBounds(x, y, width, height);

                int entriesPerPage = (int)(getHeight() / (double)heightLine);

                        getPager(entriesPerPage);

                        reloadPage();

            }

        }

        public PagedTable(ModelLoader modelLoader) {

                this.modelLoader = modelLoader;

                this.model = modelLoader.getTableModel();

                tableListener = new TableListener(this);

                init();

        }

        private void init() {

                initTable = true;

                setLayout(new GridBagLayout());

                GridBagConstraints gbc = new GridBagConstraints();

                gbc.fill = GridBagConstraints.BOTH;

                gbc.weightx = 1;

                gbc.weighty = 1;

                gbc.gridx = 0;

                gbc.gridy = 0;

                add(getJTable(), gbc);

                gbc.fill = GridBagConstraints.VERTICAL;

                gbc.weightx = 0;

                gbc.weighty = 1;

                gbc.gridx = 1;

                gbc.gridy = 0;

                add(getPaginationBar(), gbc);

                gbc.fill = GridBagConstraints.HORIZONTAL;

                gbc.weightx = 1;

                gbc.weighty = 0;

                gbc.gridx = 0;

                gbc.gridy = 1;

                gbc.gridwidth = 2;

                JPanel panel = new JPanel();

                panel.setLayout(new FlowLayout(FlowLayout.CENTER, 0, 0));

                panel.add(getTableEntryController());

                panel.add(getMoveRowsPanel());

                add(panel, gbc);

        }

        /**

         * Reloads the selected page in the visual table

         */

        public int reloadPage() {

                try {

                        removeAllVisualRows();

                        List<Object> lines = pager.getSelectedPage();

                        if(lines == null)

                                return pager.getIndexSelectedPage();

                        for (int i = 0; i < lines.size(); i++) {

                                model.addRow((Object[])lines.get(i));

                                getTableEntryController().setNItems(pager.getEntriesCount());

                        }

                } catch (NotInitializeException e) {

                }

                return pager.getIndexSelectedPage();

        }

        public Pager getPager(int nEntriesPerPage) {

                if(pager == null)

                        pager = new Pager(nEntriesPerPage);

                else

                        pager.setEntriesPerPage(nEntriesPerPage);

                return pager;

        }

        public TableEntryControllerPanel getTableEntryController() {

                if(tableEntryController == null) {

                        tableEntryController = new TableEntryControllerPanel(tableListener);

                }

                return tableEntryController;

        }

        public PaginationBarPanel getPaginationBar() {

                if(paginationBar == null) {

                        paginationBar = new PaginationBarPanel();

                }

                return paginationBar;

        }

        public DefaultTableModel getTableModel() {

                return modelLoader.getTableModel();

        }

        /**

         * This method initializes jPanel

         * @return javax.swing.JPanel

         */

        public MoveRowsPanel getMoveRowsPanel() {

                if (moveRowsPanel == null) {

                        moveRowsPanel = new MoveRowsPanel(tableListener);

                        moveRowsPanel.setVisible(false);

                }

                return moveRowsPanel;

        }

        /**

         * Obtiene la Tabla

         * @return Tabla de bandas de la imagen

         */

        public JTable getJTable() {

                if (jTable == null) {

                        jTable = new PagedJTable(model);

                        jTable.addMouseListener(this);

                        TableColumn column = null;

                        int widthPerColumn = (int) (this.getWidth() / modelLoader.getColumnNames().length);

                        for (int i = 0; i < modelLoader.getColumnNames().length; i++) {

                                column = jTable.getColumnModel().getColumn(i);

                                column.setResizable(true);

                                if (modelLoader.getColumnWidths() == null)

                                        column.setPreferredWidth(widthPerColumn);

                                else

                                        column.setPreferredWidth(modelLoader.getColumnWidths()[i]);

                        }

                }

                return jTable;

        } 

        public void setLineHeight(int height) {

                this.heightLine = height;

        }

        /**

         * Gets the selected rows

         * @return

         * @throws NotInitializeException

         */

        public int[] getSelectedRows() throws NotInitializeException {

                if (!initTable)

                        throw new NotInitializeException();

                int[] tSelected = getJTable().getSelectedRows();

                int[] result = new int[tSelected.length];

                for (int i = 0; i < result.length; i++) {

                        result[i] =  pager.getIndexSelectedPage() * pager.getEntriesPerPage() + tSelected[i];

                }

                return result;

        }

        /**

         * Intercambia una fila de la tabla por otra.

         * @param i Fila a eliminar

         */

        public void swapRow(int i, int j) throws NotInitializeException {

                if (!initTable)

                        throw new NotInitializeException();

                TableListener.comboEventEnable = false;

                if ((i < 0) || (j < 0))

                        return;

                if ((i >= model.getRowCount()) || (j >= model.getRowCount()))

                        return;

                model.moveRow(i, i, j);

                pager.swapRow(i, j);

                TableListener.comboEventEnable = true;

        }

        /**

         * A?ade una fila a la tabla.

         * @param list Lista de cadenas

         */

        public void addRow(Object[] list) throws NotInitializeException {

                if (!initTable)

                        throw new NotInitializeException();

                TableListener.comboEventEnable = false;

                pager.addEntry(list);

                //Cambio de p?gina

                if(model.getRowCount() >= pager.getEntriesPerPage()) {

                        for (int i = model.getRowCount() - 1; i >= 0; i--) {

                                model.removeRow(i);

                        }

                        pager.increaseSelectedPage();

                        getPaginationBar().getSelectedPage().setText(pager.getIndexSelectedPage() + "");

                }

                model.addRow(list);

                getTableEntryController().addPointToTable(pager.getEntriesCount());

                setSelectedIndex(model.getRowCount() - 1);

                TableListener.comboEventEnable = true;

        }

        /**

         * Selects a i point

         * @param i punto a seleccionar

         */

        public void setSelectedIndex(int i) throws NotInitializeException {

                if (!initTable)

                        throw new NotInitializeException();

                TableListener.comboEventEnable = false;

                try {

                        int index = pager.getIndexSelectedPage() * pager.getEntriesPerPage() + i;

                        getTableEntryController().setSelectedIndex(index);

                        getMoveRowsPanel().setSelectedIndex(i, model.getRowCount());

                        getJTable().setRowSelectionInterval(i, i);

                } catch (IllegalArgumentException ex) {

                }

                TableListener.comboEventEnable = true;

        }

        /**

         * Removes all rows of this table.

         */

        public void removeAllRows() throws NotInitializeException {

                if (!initTable)

                        throw new NotInitializeException();

                TableListener.comboEventEnable = false;

                model.setNumRows(0);

                getTableEntryController().setNItems(0);

                pager.removeAllEntries();

                TableListener.comboEventEnable = true;

        }

        /**

         * Removes all rows of this table.

         */

        public void removeAllVisualRows() throws NotInitializeException {

                if (!initTable)

                        throw new NotInitializeException();

                TableListener.comboEventEnable = false;

                model.setNumRows(0);

                getTableEntryController().setNItems(0);

                TableListener.comboEventEnable = true;

        }

        /**

         * Deletes a row from the table.

         * @param Global position of the entry

         */

        public void delRow(int i) throws NotInitializeException {

                if (!initTable)

                        throw new NotInitializeException();

                TableListener.comboEventEnable = false;

                int selectedRow = getSelectedVisualRow() - 1;

                int currentPage = pager.getIndexSelectedPage();

                pager.removeEntry(i);

                getTableEntryController().setNItems(pager.getEntriesCount());

                int pageLoaded = reloadPage();

                if(currentPage != pageLoaded) { //Se ha cargado una nueva p?gina

                        setSelectedIndex(model.getRowCount() - 1);

                } else if(selectedRow >= 0 && selectedRow < model.getRowCount()) {

                        setSelectedIndex(selectedRow);

                }

                TableListener.comboEventEnable = true;

        }

        /**

         * Gets the selected point

         * @return position of the selected point

         */

        public int getSelectedVisualRow() throws NotInitializeException {

                if (!initTable)

                        throw new NotInitializeException();

                return getJTable().getSelectedRow();

        }

        /**

         * Gets the number of rows in this table

         * @return N?mero de filas de la tabla

         */

        public int getRowCount() throws NotInitializeException {

                if (!initTable)

                        throw new NotInitializeException();

                return model.getRowCount();

        }

        public void mouseClicked(MouseEvent e) {

                if(e.getSource() == jTable) {

                        //When the user clicks on table, it selects the entry in the table control

                        try {

                                int selVisualRow = getSelectedVisualRow();

                                if(selVisualRow >= 0) {

                                        int selRow = pager.getIndexSelectedPage() * pager.getEntriesPerPage() + selVisualRow;

                                        getTableEntryController().setSelectedIndex(selRow);

                                }

                        } catch (NotInitializeException e1) {

                        }

                }

        }

        public void mouseEntered(MouseEvent e) {

        }

        public void mouseExited(MouseEvent e) {

        }

        public void mousePressed(MouseEvent e) {

        }

        public void mouseReleased(MouseEvent e) {

        }

}