| gvSIG desktop 1

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 *

 * 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.

 *

 */

/*

 * AUTHORS (In addition to CIT):

 * 2008 {DiSiD Technologies}  {Create a Table component for Features}

 */

package org.gvsig.fmap.mapcontrol.dal.feature.swing;

import java.awt.Color;

import java.awt.Component;

import javax.swing.JTable;

import javax.swing.event.TableModelEvent;

import javax.swing.table.TableCellRenderer;

import javax.swing.table.TableColumn;

import javax.swing.table.TableColumnModel;

import javax.swing.table.TableModel;

import org.gvsig.fmap.dal.exception.DataException;

import org.gvsig.fmap.dal.feature.Feature;

import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor;

import org.gvsig.fmap.dal.feature.FeatureStoreNotification;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.mapcontrol.dal.feature.swing.table.FeatureCellRenderer;

import org.gvsig.fmap.mapcontrol.dal.feature.swing.table.FeatureTableModel;

import org.gvsig.fmap.mapcontrol.dal.feature.swing.table.GeometryWKTCellEditor;

import org.gvsig.fmap.mapcontrol.dal.feature.swing.table.GeometryWKTCellRenderer;

import org.gvsig.fmap.mapcontrol.dal.feature.swing.table.JToggleButtonHeaderCellRenderer;

import org.gvsig.fmap.mapcontrol.dal.feature.swing.table.notification.ColumnHeaderSelectionChangeNotification;

import org.gvsig.tools.observer.Observable;

import org.gvsig.tools.observer.Observer;

/**

 * Table extension to show Feature values.

 *

 * It's based on the usage of a FeatureTableModel, and adds renderers for

 * Geometry and Feature cell values.

 *

 * Observers are notified about column header selection changes, with a

 * {@link ColumnHeaderSelectionChangeNotification}.

 *

 * @author <a href="mailto:cordin@disid.com">C?sar Ordi?ana</a>

 */

public class FeatureTable extends JTable implements Observer, Observable {

    /**

     * Generated Serial UID

     */

    private static final long serialVersionUID = -6139395189283163964L;

    private final FeatureTableModel featureTableModel;

    private JToggleButtonHeaderCellRenderer headerCellRenderer;

        private static final int COLUMN_HEADER_MARGIN = 8;

        private static final int COLUMN_HEADER_MIN_WIDTH = 50;

    /**

     * Creates a new FeatureTable with a {@link FeatureTableModel}.

     *

     * @param featureTableModel

     *            the table model to get data to be shown on the table

     * @throws DataException

     *             if there is an error while loading the Features to show

     * @see JTable#JTable(TableModel)

     */

    public FeatureTable(FeatureTableModel featureTableModel)

            throws DataException {

        super(featureTableModel);

        this.featureTableModel = featureTableModel;

        init();

    }

    /**

     * Creates a new FeatureTable with a {@link FeatureTableModel}.

     *

     * @param featureTableModel

     *            the table model to get data to be shown on the table

     * @param cm

     *            the table column model to use

     * @throws DataException

     *             if there is an error while loading the Features to show

     * @see JTable#JTable(TableModel, TableColumnModel)

     */

    public FeatureTable(FeatureTableModel featureTableModel, TableColumnModel cm)

            throws DataException {

        super(featureTableModel, cm);

        this.featureTableModel = featureTableModel;

        init();

    }

    public void update(Observable observable, Object notification) {

        if (notification instanceof FeatureStoreNotification) {

            FeatureStoreNotification fsNotification = (FeatureStoreNotification) notification;

            String type = fsNotification.getType();

            // If the selection has changed, repaint the table to show the new

            // selected rows

            if (FeatureStoreNotification.SELECTION_CHANGE.equals(type)) {

                repaint();

            }

        }

    }

    /**

     * Returns the FeatureAttributeDescriptor related to the selected columns.

     *

     * @return an array of FeatureAttributeDescriptor

     *

     * @see org.gvsig.fmap.mapcontrol.dal.feature.swing.table.JToggleButtonHeaderCellRenderer#getSelectedColumns()

     */

    public FeatureAttributeDescriptor[] getSelectedColumnsAttributeDescriptor() {

        int[] columns = headerCellRenderer.getSelectedColumns();

        FeatureAttributeDescriptor[] descriptors = new FeatureAttributeDescriptor[columns.length];

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

            descriptors[i] = featureTableModel

                    .getDescriptorForColumn(columns[i]);

        }

        return descriptors;

    }

    public void addObserver(Observer observer) {

        headerCellRenderer.addObserver(observer);

    }

    public void deleteObserver(Observer observer) {

        headerCellRenderer.deleteObserver(observer);

    }

    public void deleteObservers() {

        headerCellRenderer.deleteObservers();

    }

        /**

         * Sets that the selected Features to be viewed first.

         */

        public void setSelectionUp(boolean selectionUp) {

                ((FeatureTableModel) getModel()).setSelectionUp(selectionUp);

                scrollRectToVisible(getCellRect(0, 0, true));

        }

    // @Override

    // public void tableChanged(TableModelEvent e) {

    // super.tableChanged(e);

    // if (headerCellRenderer != null) {

    // headerCellRenderer.deselectAll();

    // }

    // }

    @Override

    protected void initializeLocalVars() {

        super.initializeLocalVars();

        // Add a cell renderer for Geometries and Features

        setDefaultRenderer(Geometry.class, new GeometryWKTCellRenderer());

        setDefaultEditor(Geometry.class, new GeometryWKTCellEditor());

        setDefaultRenderer(Feature.class, new FeatureCellRenderer());

        // Set the selected row colors

        setSelectionForeground(Color.blue);

        setSelectionBackground(Color.yellow);

    }

    /**

     * Initializes the table GUI.

     */

    private void init() throws DataException {

                setAutoResizeMode(JTable.AUTO_RESIZE_OFF);

        featureTableModel.getFeatureStore().addObserver(this);

        // Change the selection model to link with the FeatureStore selection

        // through the FeatureTableModel

        setRowSelectionAllowed(true);

        setColumnSelectionAllowed(false);

                setSelectionModel(new FeatureSelectionModel(featureTableModel));                

                headerCellRenderer = new JToggleButtonHeaderCellRenderer(this);

                getTableHeader().setDefaultRenderer(headerCellRenderer);

                TableColumnModel tcmodel = getColumnModel();

                for (int i = 0; i < tcmodel.getColumnCount(); i++) {

                        TableColumn col = tcmodel.getColumn(i);

                        // Get width of column header

                        TableCellRenderer renderer = col.getHeaderRenderer();

                        if (renderer == null) {

                                renderer = getTableHeader().getDefaultRenderer();

                        }

                        Component comp =

                                        renderer.getTableCellRendererComponent(this,

                                                        col.getHeaderValue(), false, false, 0, i);

                        int width = comp.getPreferredSize().width;

                        width =

                                        width < COLUMN_HEADER_MIN_WIDTH ? COLUMN_HEADER_MIN_WIDTH

                                                        : width;

                        col.setPreferredWidth(width + 2 * COLUMN_HEADER_MARGIN);

                }

    }

    /**

     * Returns the number of selected columns.

     *

     * @return the number of selected columns, 0 if no columns are selected

     */

    public int getSelectedColumnCount() {

        return headerCellRenderer.getSelectedColumns().length;

    }

    public void tableChanged(TableModelEvent e) {

        // Clear the header selection

        if (e != null && e.getFirstRow() == TableModelEvent.HEADER_ROW

            && headerCellRenderer != null) {

            headerCellRenderer.deselectAll();

        }

        super.tableChanged(e);

    }

}