001// License: GPL. For details, see LICENSE file.
002package org.openstreetmap.josm.gui.dialogs.relation.actions;
003
004import static org.openstreetmap.josm.tools.I18n.tr;
005
006import java.awt.event.ActionEvent;
007
008import javax.swing.JOptionPane;
009import javax.swing.RootPaneContainer;
010
011import org.openstreetmap.josm.Main;
012import org.openstreetmap.josm.data.osm.Relation;
013import org.openstreetmap.josm.gui.HelpAwareOptionPane;
014import org.openstreetmap.josm.gui.HelpAwareOptionPane.ButtonSpec;
015import org.openstreetmap.josm.gui.dialogs.relation.MemberTable;
016import org.openstreetmap.josm.gui.dialogs.relation.MemberTableModel;
017import org.openstreetmap.josm.gui.dialogs.relation.IRelationEditor;
018import org.openstreetmap.josm.gui.layer.OsmDataLayer;
019import org.openstreetmap.josm.gui.tagging.TagEditorModel;
020import org.openstreetmap.josm.gui.tagging.ac.AutoCompletingTextField;
021import org.openstreetmap.josm.tools.ImageProvider;
022import org.openstreetmap.josm.tools.InputMapUtils;
023
024/**
025 * Cancel the updates and close the dialog
026 * @since 9496
027 */
028public class CancelAction extends SavingAction {
029
030    /**
031     * Constructs a new {@code CancelAction}.
032     * @param memberTable member table
033     * @param memberTableModel member table model
034     * @param tagModel tag editor model
035     * @param layer OSM data layer
036     * @param editor relation editor
037     * @param tfRole role text field
038     */
039    public CancelAction(MemberTable memberTable, MemberTableModel memberTableModel, TagEditorModel tagModel, OsmDataLayer layer,
040            IRelationEditor editor, AutoCompletingTextField tfRole) {
041        super(memberTable, memberTableModel, tagModel, layer, editor, tfRole);
042        putValue(SHORT_DESCRIPTION, tr("Cancel the updates and close the dialog"));
043        new ImageProvider("cancel").getResource().attachImageIcon(this);
044        putValue(NAME, tr("Cancel"));
045
046        if (editor instanceof RootPaneContainer) {
047            InputMapUtils.addEscapeAction(((RootPaneContainer) editor).getRootPane(), this);
048        }
049        setEnabled(true);
050    }
051
052    @Override
053    public void actionPerformed(ActionEvent e) {
054        memberTable.stopHighlighting();
055        Relation snapshot = editor.getRelationSnapshot();
056        if ((!memberTableModel.hasSameMembersAs(snapshot) || tagModel.isDirty())
057         && !(snapshot == null && tagModel.getTags().isEmpty())) {
058            //give the user a chance to save the changes
059            int ret = confirmClosingByCancel();
060            if (ret == 0) { //Yes, save the changes
061                //copied from OKAction.run()
062                Main.pref.put("relation.editor.generic.lastrole", tfRole.getText());
063                if (!applyChanges())
064                    return;
065            } else if (ret == 2 || ret == JOptionPane.CLOSED_OPTION) //Cancel, continue editing
066                return;
067            //in case of "No, discard", there is no extra action to be performed here.
068        }
069        hideEditor();
070    }
071
072    protected int confirmClosingByCancel() {
073        ButtonSpec[] options = new ButtonSpec[] {
074                new ButtonSpec(
075                        tr("Yes, save the changes and close"),
076                        ImageProvider.get("ok"),
077                        tr("Click to save the changes and close this relation editor"),
078                        null /* no specific help topic */
079                ),
080                new ButtonSpec(
081                        tr("No, discard the changes and close"),
082                        ImageProvider.get("cancel"),
083                        tr("Click to discard the changes and close this relation editor"),
084                        null /* no specific help topic */
085                ),
086                new ButtonSpec(
087                        tr("Cancel, continue editing"),
088                        ImageProvider.get("cancel"),
089                        tr("Click to return to the relation editor and to resume relation editing"),
090                        null /* no specific help topic */
091                )
092        };
093
094        return HelpAwareOptionPane.showOptionDialog(
095                Main.parent,
096                tr("<html>The relation has been changed.<br><br>Do you want to save your changes?</html>"),
097                        tr("Unsaved changes"),
098                        JOptionPane.WARNING_MESSAGE,
099                        null,
100                        options,
101                        options[0], // OK is default,
102                        "/Dialog/RelationEditor#DiscardChanges"
103        );
104    }
105}