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.Collections;
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11 | import java.util.List;
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12 |
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13 | import org.openstreetmap.josm.Main;
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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 | * Action that merges two or more OSM data layers.
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24 | * @since 1890
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25 | */
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26 | public class MergeLayerAction extends AbstractMergeAction {
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27 |
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28 | /**
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29 | * Constructs a new {@code MergeLayerAction}.
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30 | */
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31 | public MergeLayerAction() {
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32 | super(tr("Merge layer"), "dialogs/mergedown",
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33 | tr("Merge the current layer into another layer"),
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34 | Shortcut.registerShortcut("system:merge", tr("Edit: {0}",
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35 | tr("Merge")), KeyEvent.VK_M, Shortcut.CTRL),
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36 | true, "action/mergelayer", true);
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37 | putValue("help", ht("/Action/MergeLayer"));
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38 | }
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39 |
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40 | protected void doMerge(List<Layer> targetLayers, final Collection<Layer> sourceLayers) {
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41 | final Layer targetLayer = askTargetLayer(targetLayers);
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42 | if (targetLayer == null)
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43 | return;
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44 | final Object actionName = getValue(NAME);
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45 | Main.worker.submit(() -> {
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46 | final long start = System.currentTimeMillis();
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47 | boolean layerMerged = false;
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48 | for (final Layer sourceLayer: sourceLayers) {
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49 | if (sourceLayer != null && !sourceLayer.equals(targetLayer)) {
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50 | if (sourceLayer instanceof OsmDataLayer && targetLayer instanceof OsmDataLayer
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51 | && ((OsmDataLayer) sourceLayer).isUploadDiscouraged() != ((OsmDataLayer) targetLayer).isUploadDiscouraged()
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52 | && Boolean.TRUE.equals(GuiHelper.runInEDTAndWaitAndReturn(() ->
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53 | warnMergingUploadDiscouragedLayers(sourceLayer, targetLayer)))) {
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54 | break;
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55 | }
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56 | targetLayer.mergeFrom(sourceLayer);
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57 | GuiHelper.runInEDTAndWait(() -> Main.getLayerManager().removeLayer(sourceLayer));
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58 | layerMerged = true;
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59 | }
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60 | }
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61 | if (layerMerged) {
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62 | Main.getLayerManager().setActiveLayer(targetLayer);
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63 | Main.info(tr("{0} completed in {1}", actionName, Utils.getDurationString(System.currentTimeMillis() - start)));
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64 | }
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65 | });
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66 | }
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67 |
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68 | /**
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69 | * Merges a list of layers together.
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70 | * @param sourceLayers The layers to merge
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71 | */
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72 | public void merge(List<Layer> sourceLayers) {
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73 | doMerge(sourceLayers, sourceLayers);
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74 | }
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75 |
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76 | /**
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77 | * Merges the given source layer with another one, determined at runtime.
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78 | * @param sourceLayer The source layer to merge
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79 | */
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80 | public void merge(Layer sourceLayer) {
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81 | if (sourceLayer == null)
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82 | return;
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83 | List<Layer> targetLayers = LayerListDialog.getInstance().getModel().getPossibleMergeTargets(sourceLayer);
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84 | if (targetLayers.isEmpty()) {
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85 | warnNoTargetLayersForSourceLayer(sourceLayer);
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86 | return;
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87 | }
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88 | doMerge(targetLayers, Collections.singleton(sourceLayer));
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89 | }
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90 |
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91 | @Override
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92 | public void actionPerformed(ActionEvent e) {
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93 | merge(getSourceLayer());
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94 | }
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95 |
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96 | @Override
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97 | protected void updateEnabledState() {
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98 | GuiHelper.runInEDT(() -> {
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99 | final Layer sourceLayer = getSourceLayer();
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100 | if (sourceLayer == null) {
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101 | setEnabled(false);
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102 | } else {
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103 | try {
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104 | setEnabled(!LayerListDialog.getInstance().getModel().getPossibleMergeTargets(sourceLayer).isEmpty());
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105 | } catch (IllegalStateException e) {
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106 | // May occur when destroying last layer / exiting JOSM, see #14476
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107 | setEnabled(false);
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108 | Main.error(e);
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109 | }
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110 | }
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111 | });
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112 | }
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113 |
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114 | protected Layer getSourceLayer() {
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115 | return Main.map != null ? Main.getLayerManager().getActiveLayer() : null;
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116 | }
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117 |
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118 | /**
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119 | * Warns about a discouraged merge operation, ask for confirmation.
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120 | * @param sourceLayer The source layer
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121 | * @param targetLayer The target layer
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122 | * @return {@code true} if the user wants to cancel, {@code false} if they want to continue
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123 | */
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124 | public static final boolean warnMergingUploadDiscouragedLayers(Layer sourceLayer, Layer targetLayer) {
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125 | return GuiHelper.warnUser(tr("Merging layers with different upload policies"),
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126 | "<html>" +
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127 | tr("You are about to merge data between layers ''{0}'' and ''{1}''.<br /><br />"+
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128 | "These layers have different upload policies and should not been merged as it.<br />"+
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129 | "Merging them will result to enforce the stricter policy (upload discouraged) to ''{1}''.<br /><br />"+
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130 | "<b>This is not the recommended way of merging such data</b>.<br />"+
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131 | "You should instead check and merge each object, one by one, by using ''<i>Merge selection</i>''.<br /><br />"+
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132 | "Are you sure you want to continue?", sourceLayer.getName(), targetLayer.getName(), targetLayer.getName())+
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133 | "</html>",
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134 | ImageProvider.get("dialogs", "mergedown"), tr("Ignore this hint and merge anyway"));
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135 | }
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136 | }
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