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