// License: GPL. For details, see LICENSE file.
package org.openstreetmap.josm.actions;
import static org.openstreetmap.josm.gui.help.HelpUtil.ht;
import static org.openstreetmap.josm.tools.I18n.tr;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.util.Collection;
import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.actions.downloadtasks.DownloadReferrersTask;
import org.openstreetmap.josm.data.osm.DataSet;
import org.openstreetmap.josm.data.osm.OsmPrimitive;
import org.openstreetmap.josm.gui.layer.OsmDataLayer;
import org.openstreetmap.josm.tools.Shortcut;
/**
* This action loads the set of primitives referring to the current selection from the OSM server.
* @since 1810
*/
public class DownloadReferrersAction extends JosmAction {
/**
* Constructs a new {@code DownloadReferrersAction}.
*/
public DownloadReferrersAction() {
super(tr("Download parent ways/relations..."), "download",
tr("Download objects referring to one of the selected objects"),
Shortcut.registerShortcut("file:downloadreferrers",
tr("File: {0}", tr("Download parent ways/relations...")), KeyEvent.VK_D, Shortcut.ALT_CTRL),
true, "downloadreferrers", true);
putValue("help", ht("/Action/DownloadParentWaysAndRelation"));
}
/**
* Downloads the primitives referring to the primitives in primitives
* into the target layer targetLayer
.
* Does nothing if primitives is null or empty.
*
* @param targetLayer the target layer. Must not be null.
* @param children the collection of child primitives.
* @throws IllegalArgumentException if targetLayer is null
*/
public static void downloadReferrers(OsmDataLayer targetLayer, Collection children) {
if (children == null || children.isEmpty())
return;
Main.worker.submit(new DownloadReferrersTask(targetLayer, children));
}
@Override
public void actionPerformed(ActionEvent e) {
if (!isEnabled())
return;
OsmDataLayer layer = Main.main.getEditLayer();
if (layer == null)
return;
Collection primitives = layer.data.getSelected();
downloadReferrers(layer, primitives);
}
@Override
protected void updateEnabledState() {
DataSet ds = getLayerManager().getEditDataSet();
if (ds == null) {
setEnabled(false);
} else {
updateEnabledState(ds.getSelected());
}
}
@Override
protected void updateEnabledState(Collection extends OsmPrimitive> selection) {
setEnabled(selection != null && !selection.isEmpty());
}
}