| 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.DataSet;
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| 13 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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| 14 | import org.openstreetmap.josm.data.osm.visitor.MergeSourceBuildingVisitor;
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| 15 | import org.openstreetmap.josm.gui.dialogs.LayerListDialog;
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| 16 | import org.openstreetmap.josm.gui.layer.Layer;
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| 17 | import org.openstreetmap.josm.gui.layer.OsmDataLayer;
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| 18 | import org.openstreetmap.josm.gui.util.GuiHelper;
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| 19 | import org.openstreetmap.josm.tools.ImageProvider;
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| 20 | import org.openstreetmap.josm.tools.Shortcut;
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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 | DataSet ds = getLayerManager().getEditDataSet();
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| 74 | if (ds == null) {
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| 75 | setEnabled(false);
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| 76 | } else {
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| 77 | updateEnabledState(ds.getAllSelected());
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| 78 | }
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| 79 | }
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| 80 |
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| 81 | @Override
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| 82 | protected void updateEnabledState(Collection<? extends OsmPrimitive> selection) {
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| 83 | setEnabled(selection != null && !selection.isEmpty());
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| 84 | }
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| 85 |
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| 86 | /**
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| 87 | * Warns the user about merging too many objects with different upload policies.
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| 88 | * @param targetLayer Target layer
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| 89 | * @return true if the user wants to cancel, false if they want to continue
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| 90 | */
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| 91 | public final boolean warnMergingUploadDiscouragedObjects(Layer targetLayer) {
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| 92 | return GuiHelper.warnUser(tr("Merging too many objects with different upload policies"),
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| 93 | "<html>" +
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| 94 | tr("You are about to merge more than 1 object between layers ''{0}'' and ''{1}''.<br /><br />"+
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| 95 | "<b>This is not the recommended way of merging such data</b>.<br />"+
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| 96 | "You should instead check and merge each object, <b>one by one</b>.<br /><br />"+
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| 97 | "Are you sure you want to continue?",
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| 98 | getLayerManager().getEditLayer().getName(), targetLayer.getName(), targetLayer.getName())+
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| 99 | "</html>",
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| 100 | ImageProvider.get("dialogs", "mergedown"), tr("Ignore this hint and merge anyway"));
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| 101 | }
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| 102 | }
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