| 1 | // License: GPL. For details, see LICENSE file.
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| 2 | package org.openstreetmap.josm.corrector;
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| 3 |
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| 4 | import static org.openstreetmap.josm.tools.I18n.tr;
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| 5 | import static org.openstreetmap.josm.tools.I18n.trn;
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| 6 |
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| 7 | import java.util.Arrays;
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| 8 | import java.util.Map;
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| 9 |
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| 10 | import javax.swing.JOptionPane;
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| 11 |
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| 12 | import org.openstreetmap.josm.Main;
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| 13 | import org.openstreetmap.josm.data.osm.DefaultNameFormatter;
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| 14 | import org.openstreetmap.josm.data.osm.Tag;
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| 15 | import org.openstreetmap.josm.data.osm.TagCollection;
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| 16 | import org.openstreetmap.josm.data.osm.Tagged;
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| 17 | import org.openstreetmap.josm.data.osm.Way;
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| 18 | import org.openstreetmap.josm.gui.ConditionalOptionPaneUtil;
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| 19 | import org.openstreetmap.josm.tools.UserCancelException;
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| 20 | import org.openstreetmap.josm.tools.Utils;
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| 21 |
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| 22 | /**
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| 23 | * A ReverseWayNoTagCorrector warns about ways that should not be reversed
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| 24 | * because their semantic meaning cannot be preserved in that case.
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| 25 | * E.g. natural=coastline, natural=cliff, barrier=retaining_wall cannot be changed.
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| 26 | * @see ReverseWayTagCorrector for handling of tags that can be modified (oneway=yes, etc.)
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| 27 | * @since 5724
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| 28 | */
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| 29 | public final class ReverseWayNoTagCorrector {
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| 30 |
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| 31 | private ReverseWayNoTagCorrector() {
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| 32 | // Hide default constructor for utils classes
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| 33 | }
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| 34 |
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| 35 | /**
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| 36 | * Tags that imply a semantic meaning from the way direction and cannot be changed.
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| 37 | */
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| 38 | private static final TagCollection DIRECTIONAL_TAGS = new TagCollection(Arrays.asList(
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| 39 | new Tag("natural", "coastline"),
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| 40 | new Tag("natural", "cliff"),
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| 41 | new Tag("barrier", "guard_rail"),
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| 42 | new Tag("barrier", "kerb"),
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| 43 | new Tag("barrier", "retaining_wall"),
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| 44 | new Tag("man_made", "embankment")
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| 45 | ));
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| 46 |
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| 47 | /**
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| 48 | * Replies the tags that imply a semantic meaning from <code>way</code> direction and cannot be changed.
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| 49 | * @param way The way to look for
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| 50 | * @return tags that imply a semantic meaning from <code>way</code> direction and cannot be changed
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| 51 | */
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| 52 | public static TagCollection getDirectionalTags(Tagged way) {
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| 53 | final TagCollection collection = new TagCollection();
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| 54 | for (Map.Entry<String, String> entry : way.getKeys().entrySet()) {
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| 55 | final Tag tag = new Tag(entry.getKey(), entry.getValue());
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| 56 | final boolean isDirectional = DIRECTIONAL_TAGS.contains(tag) || tag.isDirectionKey();
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| 57 | if (isDirectional) {
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| 58 | final boolean cannotBeCorrected = ReverseWayTagCorrector.getTagCorrections(tag).isEmpty();
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| 59 | if (cannotBeCorrected) {
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| 60 | collection.add(tag);
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| 61 | }
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| 62 | }
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| 63 | }
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| 64 | return collection;
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| 65 | }
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| 66 |
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| 67 | /**
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| 68 | * Tests whether way can be reversed without semantic change.
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| 69 | * Looks for tags like natural=cliff, barrier=retaining_wall.
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| 70 | * @param way The way to check
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| 71 | * @return false if the semantic meaning change if the way is reversed, true otherwise.
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| 72 | */
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| 73 | public static boolean isReversible(Tagged way) {
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| 74 | return getDirectionalTags(way).isEmpty();
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| 75 | }
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| 76 |
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| 77 | private static boolean confirmReverseWay(Way way, TagCollection tags) {
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| 78 | String msg = trn(
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| 79 | // Singular, if a single tag is impacted
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| 80 | "<html>You are going to reverse the way ''{0}'',"
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| 81 | + "<br/> whose semantic meaning of its tag ''{1}'' is defined by its direction.<br/>"
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| 82 | + "Do you really want to change the way direction, thus its semantic meaning?</html>",
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| 83 | // Plural, if several tags are impacted
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| 84 | "<html>You are going to reverse the way ''{0}'',"
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| 85 | + "<br/> whose semantic meaning of these tags are defined by its direction:<br/>{1}"
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| 86 | + "Do you really want to change the way direction, thus its semantic meaning?</html>",
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| 87 | tags.size(),
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| 88 | Utils.escapeReservedCharactersHTML(way.getDisplayName(DefaultNameFormatter.getInstance())),
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| 89 | Utils.joinAsHtmlUnorderedList(tags)
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| 90 | );
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| 91 | int ret = ConditionalOptionPaneUtil.showOptionDialog(
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| 92 | "reverse_directional_way",
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| 93 | Main.parent,
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| 94 | msg,
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| 95 | tr("Reverse directional way."),
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| 96 | JOptionPane.YES_NO_CANCEL_OPTION,
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| 97 | JOptionPane.WARNING_MESSAGE,
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| 98 | null,
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| 99 | null
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| 100 | );
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| 101 | switch(ret) {
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| 102 | case ConditionalOptionPaneUtil.DIALOG_DISABLED_OPTION:
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| 103 | case JOptionPane.YES_OPTION:
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| 104 | return true;
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| 105 | default:
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| 106 | return false;
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| 107 | }
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| 108 | }
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| 109 |
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| 110 | /**
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| 111 | * Checks the given way can be safely reversed and asks user to confirm the operation if it not the case.
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| 112 | * @param way The way to check
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| 113 | * @throws UserCancelException If the user cancels the operation
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| 114 | */
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| 115 | public static void checkAndConfirmReverseWay(Way way) throws UserCancelException {
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| 116 | TagCollection tags = getDirectionalTags(way);
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| 117 | if (!tags.isEmpty() && !confirmReverseWay(way, tags)) {
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| 118 | throw new UserCancelException();
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| 119 | }
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| 120 | }
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| 121 | }
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