1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.actions;
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3 |
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4 | import static org.openstreetmap.josm.gui.help.HelpUtil.ht;
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5 | import static org.openstreetmap.josm.tools.I18n.tr;
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6 |
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7 | import java.awt.event.ActionEvent;
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8 | import java.awt.event.KeyEvent;
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9 | import java.util.Collection;
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10 | import java.util.List;
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11 |
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12 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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13 | import org.openstreetmap.josm.data.osm.visitor.MergeSourceBuildingVisitor;
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14 | import org.openstreetmap.josm.gui.dialogs.LayerListDialog;
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15 | import org.openstreetmap.josm.gui.layer.Layer;
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16 | import org.openstreetmap.josm.gui.layer.OsmDataLayer;
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17 | import org.openstreetmap.josm.gui.util.GuiHelper;
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18 | import org.openstreetmap.josm.tools.ImageProvider;
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19 | import org.openstreetmap.josm.tools.Shortcut;
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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 | * Merge the currently selected objects into another layer.
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24 | * @since 1890
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25 | */
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26 | public class MergeSelectionAction extends AbstractMergeAction {
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27 |
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28 | /**
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29 | * Constructs a new {@code MergeSelectionAction}.
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30 | */
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31 | public MergeSelectionAction() {
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32 | super(tr("Merge selection"), "dialogs/mergedown", tr("Merge the currently selected objects into another layer"),
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33 | Shortcut.registerShortcut("system:mergeselection", tr("Edit: {0}", tr("Merge selection")),
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34 | KeyEvent.VK_M, Shortcut.CTRL_SHIFT),
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35 | true /* register */
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36 | );
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37 | putValue("help", ht("/Action/MergeSelection"));
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38 | }
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39 |
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40 | /**
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41 | * Merge the currently selected objects into another layer.
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42 | */
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43 | public void mergeSelected() {
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44 | OsmDataLayer editLayer = getLayerManager().getEditLayer();
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45 | List<Layer> targetLayers = LayerListDialog.getInstance().getModel().getPossibleMergeTargets(editLayer);
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46 | if (targetLayers.isEmpty()) {
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47 | warnNoTargetLayersForSourceLayer(editLayer);
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48 | return;
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49 | }
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50 | Layer targetLayer = askTargetLayer(targetLayers);
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51 | if (targetLayer == null)
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52 | return;
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53 | if (editLayer.isUploadDiscouraged() && targetLayer instanceof OsmDataLayer
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54 | && !((OsmDataLayer) targetLayer).isUploadDiscouraged()
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55 | && editLayer.data.getAllSelected().size() > 1
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56 | && warnMergingUploadDiscouragedObjects(targetLayer)) {
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57 | return;
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58 | }
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59 | MergeSourceBuildingVisitor builder = new MergeSourceBuildingVisitor(editLayer.data);
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60 | ((OsmDataLayer) targetLayer).mergeFrom(builder.build());
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61 | }
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62 |
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63 | @Override
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64 | public void actionPerformed(ActionEvent e) {
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65 | OsmDataLayer editLayer = getLayerManager().getEditLayer();
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66 | if (editLayer == null || editLayer.data.selectionEmpty())
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67 | return;
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68 | mergeSelected();
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69 | }
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70 |
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71 | @Override
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72 | protected void updateEnabledState() {
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73 | updateEnabledStateOnCurrentSelection();
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74 | }
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75 |
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76 | @Override
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77 | protected void updateEnabledState(Collection<? extends OsmPrimitive> selection) {
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78 | updateEnabledStateOnModifiableSelection(selection);
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79 | }
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80 |
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81 | /**
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82 | * Warns the user about merging too many objects with different upload policies.
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83 | * @param targetLayer Target layer
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84 | * @return true if the user wants to cancel, false if they want to continue
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85 | */
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86 | public final boolean warnMergingUploadDiscouragedObjects(Layer targetLayer) {
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87 | return GuiHelper.warnUser(tr("Merging too many objects with different upload policies"),
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88 | "<html>" +
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89 | tr("You are about to merge more than 1 object between layers ''{0}'' and ''{1}''.<br /><br />"+
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90 | "<b>This is not the recommended way of merging such data</b>.<br />"+
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91 | "You should instead check and merge each object, <b>one by one</b>.<br /><br />"+
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92 | "Are you sure you want to continue?",
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93 | Utils.escapeReservedCharactersHTML(getLayerManager().getEditLayer().getName()),
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94 | Utils.escapeReservedCharactersHTML(targetLayer.getName()),
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95 | Utils.escapeReservedCharactersHTML(targetLayer.getName()))+
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96 | "</html>",
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97 | ImageProvider.get("dialogs", "mergedown"), tr("Ignore this hint and merge anyway"));
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98 | }
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99 | }
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