// License: GPL. For details, see LICENSE file.
package org.openstreetmap.josm.actions;
import static org.openstreetmap.josm.tools.I18n.tr;
import static org.openstreetmap.josm.gui.help.HelpUtil.ht;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.util.List;
import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.gui.dialogs.LayerListDialog;
import org.openstreetmap.josm.gui.layer.Layer;
import org.openstreetmap.josm.tools.Shortcut;
public class MergeLayerAction extends AbstractMergeAction {
public MergeLayerAction() {
super(tr("Merge layer"), "dialogs/mergedown", tr("Merge the current layer into another layer"), Shortcut
.registerShortcut("system:merge", tr("Edit: {0}", tr("Merge")), KeyEvent.VK_M, Shortcut.GROUP_MENU),
true /* register */
);
putValue("help", ht("/Action/MergeLayer"));
}
public void merge(Layer sourceLayer) {
if (sourceLayer == null)
return;
List<Layer> targetLayers = LayerListDialog.getInstance().getModel().getPossibleMergeTargets(sourceLayer);
if (targetLayers.isEmpty()) {
warnNoTargetLayersForSourceLayer(sourceLayer);
return;
}
Layer targetLayer = askTargetLayer(targetLayers);
if (targetLayer == null)
return;
targetLayer.mergeFrom(sourceLayer);
Main.map.mapView.removeLayer(sourceLayer);
Main.map.mapView.setActiveLayer(targetLayer);
}
public void actionPerformed(ActionEvent e) {
Layer sourceLayer = Main.main.getEditLayer();
if (sourceLayer == null)
return;
merge(sourceLayer);
}
@Override
protected void updateEnabledState() {
if (getEditLayer() == null) {
setEnabled(false);
return;
}
setEnabled(!LayerListDialog.getInstance().getModel().getPossibleMergeTargets(getEditLayer()).isEmpty());
}
}