source: josm/branch/0.5/src/org/openstreetmap/josm/gui/dialogs/SelectionListDialog.java@ 329

// License: GPL. Copyright 2007 by Immanuel Scholz and others
package org.openstreetmap.josm.gui.dialogs;

import static org.openstreetmap.josm.tools.I18n.tr;

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.LinkedList;

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

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

/**
 * A small tool dialog for displaying the current selection. The selection manager
 * respects clicks into the selection list. Ctrl-click will remove entries from
 * the list while single click will make the clicked entry the only selection.
 *
 * @author imi
 */
public class SelectionListDialog extends ToggleDialog implements SelectionChangedListener {

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

        public SelectionListDialog() {
                super(tr("Current Selection"), "selectionlist", tr("Open a selection list window."), KeyEvent.VK_E, 150);
                displaylist.setCellRenderer(new OsmPrimitivRenderer());
                displaylist.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
                displaylist.addMouseListener(new MouseAdapter(){
                        @Override public void mouseClicked(MouseEvent e) {
                                if (e.getClickCount() < 2)
                                        return;
                                updateMap();
                        }
                });

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

                JPanel buttonPanel = new JPanel(new GridLayout(1,2));

                buttonPanel.add(createButton("Select", "mapmode/selection/select", "Set the selected elements on the map to the selected items in the list above.", new ActionListener(){
                        public void actionPerformed(ActionEvent e) {
                                updateMap();
                        }
                }));

                buttonPanel.add(createButton("Reload", "dialogs/refresh", "Refresh the selection list.", new ActionListener(){
                        public void actionPerformed(ActionEvent e) {
                                selectionChanged(Main.ds.getSelected());
            }
                }));

                buttonPanel.add(createButton("Search", "dialogs/search", "Search for objects.", Main.main.menu.search));

                add(buttonPanel, BorderLayout.SOUTH);
                selectionChanged(Main.ds.getSelected());

                DataSet.selListeners.add(this);
        }

        private JButton createButton(String name, String icon, String tooltip, ActionListener action) {
                JButton button = new JButton(tr(name), ImageProvider.get(icon));
                button.setToolTipText(tr(tooltip));
                button.addActionListener(action);
                button.putClientProperty("help", "Dialog/SelectionList/"+name);
                return button;
        }

        @Override public void setVisible(boolean b) {
                super.setVisible(b);
                if (b)
                        selectionChanged(Main.ds.getSelected());
        }


        /**
         * Called when the selection in the dataset changed.
         * @param newSelection The new selection array.
         */
        public void selectionChanged(Collection<? extends OsmPrimitive> newSelection) {
                if (list == null)
                        return; // selection changed may be received in base class constructor before init
                if (!isVisible())
                        return;
                OsmPrimitive[] selArr = new OsmPrimitive[newSelection.size()];
                selArr = newSelection.toArray(selArr);
                Arrays.sort(selArr);
                list.setSize(selArr.length);
                int i = 0;
                for (OsmPrimitive osm : selArr)
                        list.setElementAt(osm, i++);
        }

        /**
         * Sets the selection of the map to the current selected items.
         */
        public void updateMap() {
                Collection<OsmPrimitive> sel = new LinkedList<OsmPrimitive>();
                for (int i = 0; i < list.getSize(); ++i)
                        if (displaylist.isSelectedIndex(i))
                                sel.add((OsmPrimitive)list.get(i));
                Main.ds.setSelected(sel);
        }
}