001// License: GPL. For details, see LICENSE file. 002package org.openstreetmap.josm.actions; 003 004import static org.openstreetmap.josm.gui.help.HelpUtil.ht; 005import static org.openstreetmap.josm.tools.I18n.tr; 006 007import java.awt.event.ActionEvent; 008import java.awt.event.KeyEvent; 009import java.util.Collection; 010import java.util.List; 011 012import org.openstreetmap.josm.data.osm.DataSet; 013import org.openstreetmap.josm.data.osm.OsmPrimitive; 014import org.openstreetmap.josm.data.osm.visitor.MergeSourceBuildingVisitor; 015import org.openstreetmap.josm.gui.dialogs.LayerListDialog; 016import org.openstreetmap.josm.gui.layer.Layer; 017import org.openstreetmap.josm.gui.layer.OsmDataLayer; 018import org.openstreetmap.josm.gui.util.GuiHelper; 019import org.openstreetmap.josm.tools.ImageProvider; 020import org.openstreetmap.josm.tools.Shortcut; 021 022public class MergeSelectionAction extends AbstractMergeAction { 023 public MergeSelectionAction() { 024 super(tr("Merge selection"), "dialogs/mergedown", tr("Merge the currently selected objects into another layer"), 025 Shortcut.registerShortcut("system:mergeselection", tr("Edit: {0}", tr("Merge selection")), 026 KeyEvent.VK_M, Shortcut.CTRL_SHIFT), 027 true /* register */ 028 ); 029 putValue("help", ht("/Action/MergeSelection")); 030 } 031 032 public void mergeSelected(DataSet source) { 033 List<Layer> targetLayers = LayerListDialog.getInstance().getModel().getPossibleMergeTargets(getEditLayer()); 034 if (targetLayers.isEmpty()) { 035 warnNoTargetLayersForSourceLayer(getEditLayer()); 036 return; 037 } 038 Layer targetLayer = askTargetLayer(targetLayers); 039 if (targetLayer == null) 040 return; 041 if (getEditLayer().isUploadDiscouraged() && targetLayer instanceof OsmDataLayer && !((OsmDataLayer)targetLayer).isUploadDiscouraged() 042 && getEditLayer().data.getAllSelected().size() > 1) { 043 if (warnMergingUploadDiscouragedObjects(targetLayer)) { 044 return; 045 } 046 } 047 MergeSourceBuildingVisitor builder = new MergeSourceBuildingVisitor(getEditLayer().data); 048 ((OsmDataLayer)targetLayer).mergeFrom(builder.build()); 049 } 050 051 @Override 052 public void actionPerformed(ActionEvent e) { 053 if (getEditLayer() == null || getEditLayer().data.getAllSelected().isEmpty()) 054 return; 055 mergeSelected(getEditLayer().data); 056 } 057 058 @Override 059 protected void updateEnabledState() { 060 if (getCurrentDataSet() == null) { 061 setEnabled(false); 062 } else { 063 updateEnabledState(getCurrentDataSet().getAllSelected()); 064 } 065 } 066 067 @Override 068 protected void updateEnabledState(Collection<? extends OsmPrimitive> selection) { 069 setEnabled(selection != null && !selection.isEmpty()); 070 } 071 072 /** 073 * returns true if the user wants to cancel, false if they want to continue 074 */ 075 public static final boolean warnMergingUploadDiscouragedObjects(Layer targetLayer) { 076 return GuiHelper.warnUser(tr("Merging too many objects with different upload policies"), 077 "<html>" + 078 tr("You are about to merge more than 1 object between layers ''{0}'' and ''{1}''.<br /><br />"+ 079 "<b>This is not the recommended way of merging such data</b>.<br />"+ 080 "You should instead check and merge each object, <b>one by one</b>.<br /><br />"+ 081 "Are you sure you want to continue?", getEditLayer().getName(), targetLayer.getName(), targetLayer.getName())+ 082 "</html>", 083 ImageProvider.get("dialogs", "mergedown"), tr("Ignore this hint and merge anyway")); 084 } 085}