source: josm/trunk/src/org/openstreetmap/josm/gui/history/NodeListViewer.java@ 14676

// License: GPL. For details, see LICENSE file.
package org.openstreetmap.josm.gui.history;

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

import java.awt.Point;
import java.awt.event.ActionEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.AbstractAction;
import javax.swing.JPopupMenu;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;

import org.openstreetmap.josm.actions.AutoScaleAction;
import org.openstreetmap.josm.actions.AutoScaleAction.AutoScaleMode;
import org.openstreetmap.josm.data.osm.IPrimitive;
import org.openstreetmap.josm.data.osm.OsmData;
import org.openstreetmap.josm.data.osm.OsmPrimitive;
import org.openstreetmap.josm.data.osm.OsmPrimitiveType;
import org.openstreetmap.josm.data.osm.PrimitiveId;
import org.openstreetmap.josm.data.osm.SimplePrimitiveId;
import org.openstreetmap.josm.data.osm.history.History;
import org.openstreetmap.josm.data.osm.history.HistoryDataSet;
import org.openstreetmap.josm.gui.MainApplication;
import org.openstreetmap.josm.gui.util.GuiHelper;
import org.openstreetmap.josm.gui.widgets.PopupMenuLauncher;
import org.openstreetmap.josm.tools.ImageProvider;

/**
 * NodeListViewer is a UI component which displays the node list of two
 * version of a {@link OsmPrimitive} in a {@link History}.
 *
 * <ul>
 *   <li>on the left, it displays the node list for the version at {@link PointInTimeType#REFERENCE_POINT_IN_TIME}</li>
 *   <li>on the right, it displays the node list for the version at {@link PointInTimeType#CURRENT_POINT_IN_TIME}</li>
 * </ul>
 * @since 1709
 */
public class NodeListViewer extends HistoryViewerPanel {

    /**
     * Constructs a new {@code NodeListViewer}.
     * @param model history browser model
     */
    public NodeListViewer(HistoryBrowserModel model) {
        super(model);
    }

    @Override
    protected JTable buildReferenceTable() {
        return buildTable(PointInTimeType.REFERENCE_POINT_IN_TIME, "table.referencenodelisttable");
    }

    @Override
    protected JTable buildCurrentTable() {
        return buildTable(PointInTimeType.CURRENT_POINT_IN_TIME, "table.currentnodelisttable");
    }

    private JTable buildTable(PointInTimeType pointInTimeType, String name) {
        final DiffTableModel tableModel = model.getNodeListTableModel(pointInTimeType);
        final NodeListTableColumnModel columnModel = new NodeListTableColumnModel();
        final JTable table = new JTable(tableModel, columnModel);
        tableModel.addTableModelListener(new ReversedChangeListener(table, columnModel));
        table.setName(name);
        table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        selectionSynchronizer.participateInSynchronizedSelection(table.getSelectionModel());
        table.addMouseListener(new InternalPopupMenuLauncher());
        table.addMouseListener(new DoubleClickAdapter(table));
        return table;
    }

    static final class ReversedChangeListener implements TableModelListener {
        private final NodeListTableColumnModel columnModel;
        private final JTable table;
        private Boolean reversed;
        private final String nonReversedText;
        private final String reversedText;

        ReversedChangeListener(JTable table, NodeListTableColumnModel columnModel) {
            this.columnModel = columnModel;
            this.table = table;
            nonReversedText = tr("Nodes") + (table.getFont().canDisplay('\u25bc') ? " \u25bc" : " (1-n)");
            reversedText = tr("Nodes") + (table.getFont().canDisplay('\u25b2') ? " \u25b2" : " (n-1)");
        }

        @Override
        public void tableChanged(TableModelEvent e) {
            if (e.getSource() instanceof DiffTableModel) {
                final DiffTableModel mod = (DiffTableModel) e.getSource();
                if (reversed == null || reversed != mod.isReversed()) {
                    reversed = mod.isReversed();
                    columnModel.getColumn(0).setHeaderValue(reversed ? reversedText : nonReversedText);
                    table.getTableHeader().setToolTipText(
                            reversed ? tr("The nodes of this way are in reverse order") : null);
                    table.getTableHeader().repaint();
                }
            }
        }
    }

    static class NodeListPopupMenu extends JPopupMenu {
        private final ZoomToNodeAction zoomToNodeAction;
        private final ShowHistoryAction showHistoryAction;

        NodeListPopupMenu() {
            zoomToNodeAction = new ZoomToNodeAction();
            add(zoomToNodeAction);
            showHistoryAction = new ShowHistoryAction();
            add(showHistoryAction);
        }

        public void prepare(PrimitiveId pid) {
            zoomToNodeAction.setPrimitiveId(pid);
            zoomToNodeAction.updateEnabledState();

            showHistoryAction.setPrimitiveId(pid);
            showHistoryAction.updateEnabledState();
        }
    }

    static class ZoomToNodeAction extends AbstractAction {
        private transient PrimitiveId primitiveId;

        /**
         * Constructs a new {@code ZoomToNodeAction}.
         */
        ZoomToNodeAction() {
            putValue(NAME, tr("Zoom to node"));
            putValue(SHORT_DESCRIPTION, tr("Zoom to this node in the current data layer"));
            new ImageProvider("dialogs", "zoomin").getResource().attachImageIcon(this, true);
        }

        @Override
        public void actionPerformed(ActionEvent e) {
            if (!isEnabled())
                return;
            IPrimitive p = getPrimitiveToZoom();
            if (p != null) {
                OsmData<?, ?, ?, ?> ds = MainApplication.getLayerManager().getActiveData();
                if (ds != null) {
                    ds.setSelected(p.getPrimitiveId());
                    AutoScaleAction.autoScale(AutoScaleMode.SELECTION);
                }
            }
        }

        public void setPrimitiveId(PrimitiveId pid) {
            this.primitiveId = pid;
            updateEnabledState();
        }

        protected IPrimitive getPrimitiveToZoom() {
            if (primitiveId == null)
                return null;
            OsmData<?, ?, ?, ?> ds = MainApplication.getLayerManager().getActiveData();
            if (ds == null)
                return null;
            return ds.getPrimitiveById(primitiveId);
        }

        public void updateEnabledState() {
            setEnabled(MainApplication.getLayerManager().getActiveData() != null && getPrimitiveToZoom() != null);
        }
    }

    static class ShowHistoryAction extends AbstractAction {
        private transient PrimitiveId primitiveId;

        /**
         * Constructs a new {@code ShowHistoryAction}.
         */
        ShowHistoryAction() {
            putValue(NAME, tr("Show history"));
            putValue(SHORT_DESCRIPTION, tr("Open a history browser with the history of this node"));
            new ImageProvider("dialogs", "history").getResource().attachImageIcon(this, true);
        }

        @Override
        public void actionPerformed(ActionEvent e) {
            if (isEnabled()) {
                run();
            }
        }

        public void setPrimitiveId(PrimitiveId pid) {
            this.primitiveId = pid;
            updateEnabledState();
        }

        public void run() {
            if (HistoryDataSet.getInstance().getHistory(primitiveId) == null) {
                MainApplication.worker.submit(new HistoryLoadTask().add(primitiveId));
            }
            MainApplication.worker.submit(() -> {
                final History h = HistoryDataSet.getInstance().getHistory(primitiveId);
                if (h == null)
                    return;
                GuiHelper.runInEDT(() -> HistoryBrowserDialogManager.getInstance().show(h));
            });
        }

        public void updateEnabledState() {
            setEnabled(primitiveId != null && !primitiveId.isNew());
        }
    }

    private static PrimitiveId primitiveIdAtRow(DiffTableModel model, int row) {
        Long id = (Long) model.getValueAt(row, 0).value;
        return id == null ? null : new SimplePrimitiveId(id, OsmPrimitiveType.NODE);
    }

    class InternalPopupMenuLauncher extends PopupMenuLauncher {
        InternalPopupMenuLauncher() {
            super(new NodeListPopupMenu());
        }

        @Override
        protected int checkTableSelection(JTable table, Point p) {
            int row = super.checkTableSelection(table, p);
            ((NodeListPopupMenu) menu).prepare(primitiveIdAtRow((DiffTableModel) table.getModel(), row));
            return row;
        }
    }

    static class DoubleClickAdapter extends MouseAdapter {
        private final JTable table;
        private final ShowHistoryAction showHistoryAction;

        DoubleClickAdapter(JTable table) {
            this.table = table;
            showHistoryAction = new ShowHistoryAction();
        }

        @Override
        public void mouseClicked(MouseEvent e) {
            if (e.getClickCount() < 2)
                return;
            int row = table.rowAtPoint(e.getPoint());
            if (row <= 0)
                return;
            PrimitiveId pid = primitiveIdAtRow((DiffTableModel) table.getModel(), row);
            if (pid == null || pid.isNew())
                return;
            showHistoryAction.setPrimitiveId(pid);
            showHistoryAction.run();
        }
    }
}