source: josm/trunk/src/org/openstreetmap/josm/gui/dialogs/RelationListDialog.java@ 343

package org.openstreetmap.josm.gui.dialogs;

import static org.openstreetmap.josm.tools.I18n.tr;
import static org.xnap.commons.i18n.I18n.marktr;

import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedList;

import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JList;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.ListSelectionModel;

import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.command.DeleteCommand;
import org.openstreetmap.josm.data.SelectionChangedListener;
import org.openstreetmap.josm.data.osm.DataSet;
import org.openstreetmap.josm.data.osm.Relation;
import org.openstreetmap.josm.data.osm.OsmPrimitive;
import org.openstreetmap.josm.gui.OsmPrimitivRenderer;
import org.openstreetmap.josm.tools.ImageProvider;

/**
 * A dialog showing all known relations, with buttons to add, edit, and
 * delete them. 
 * 
 * We don't have such dialogs for nodes, segments, and ways, becaus those
 * objects are visible on the map and can be selected there. Relations are not.
 *
 * @author Frederik Ramm <frederik@remote.org>
 */
public class RelationListDialog extends ToggleDialog {

        /**
         * The selection's list data.
         */
        private final DefaultListModel list = new DefaultListModel();

        /**
         * The display list.
         */
        private JList displaylist = new JList(list);

        public RelationListDialog() {
                super(tr("Relations"), "relationlist", tr("Open a list of all relations."), KeyEvent.VK_N, 150);
                displaylist.setCellRenderer(new OsmPrimitivRenderer());
                displaylist.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
                displaylist.addMouseListener(new MouseAdapter(){
                        @Override public void mouseClicked(MouseEvent e) {
                                if (e.getClickCount() < 2)
                                        return;
                                Relation toEdit = (Relation) displaylist.getSelectedValue();
                                if (toEdit != null)
                                        new RelationEditor(toEdit).setVisible(true);
                        }
                });

                add(new JScrollPane(displaylist), BorderLayout.CENTER);

                JPanel buttonPanel = new JPanel(new GridLayout(1,3));

                buttonPanel.add(createButton(marktr("Add Relation"), "addrelation", tr("Create a new relation"), KeyEvent.VK_A, new ActionListener() {
                        public void actionPerformed(ActionEvent e) {
                                // call relation editor with null argument to create new relation
                                new RelationEditor(null).setVisible(true);
                        }
                }));
                
                buttonPanel.add(createButton(marktr("Edit"), "edit", tr( "Open an editor for the selected relation"), KeyEvent.VK_E, new ActionListener() {
                        public void actionPerformed(ActionEvent e) {
                                Relation toEdit = (Relation) displaylist.getSelectedValue();
                                if (toEdit != null)
                                        new RelationEditor(toEdit).setVisible(true);                            
                        }
                }));
                
                buttonPanel.add(createButton(marktr("Delete"), "delete", tr("Delete the selected relation"), KeyEvent.VK_D, new ActionListener() {
                        public void actionPerformed(ActionEvent e) {
                                Relation toDelete = (Relation) displaylist.getSelectedValue();
                                if (toDelete != null) {
                                        Main.main.editLayer().add(new DeleteCommand(Collections.singleton(toDelete)));
                                }
                        }
                }));
                
                add(buttonPanel, BorderLayout.SOUTH);
                
                /*
                DataSet.dataListeners.add(new DataChangedListener() {
                        public void dataChanged() {
                                updateList();
                                repaint();
                        }
                });
                */
        }

        private JButton createButton(String name, String imagename, String tooltip, int mnemonic, ActionListener actionListener) {
                JButton b = new JButton(tr(name), ImageProvider.get("dialogs", imagename));
                b.setActionCommand(name);
                b.addActionListener(actionListener);
                b.setToolTipText(tooltip);
                b.setMnemonic(mnemonic);
                b.putClientProperty("help", "Dialog/Properties/"+name);
                return b;
        }

        @Override public void setVisible(boolean b) {
                super.setVisible(b);
                if (b) updateList();
        }
        
        public void updateList() {
                list.setSize(Main.ds.relations.size());
                int i = 0;
                for (Relation e : Main.ds.relations) {
                        list.setElementAt(e, i++);
                }
        }
        
}