// 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.awt.geom.Area;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Future;
import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.actions.downloadtasks.DownloadTaskList;
import org.openstreetmap.josm.data.DataSource;
import org.openstreetmap.josm.gui.layer.OsmDataLayer;
import org.openstreetmap.josm.gui.progress.swing.PleaseWaitProgressMonitor;
import org.openstreetmap.josm.io.OnlineResource;
import org.openstreetmap.josm.tools.Shortcut;
/**
* This action synchronizes the dataset with the current state on the server.
*
* It does so by re-downloading all areas and thereby merging all compatible
* changes from the current server version.
*/
public class UpdateDataAction extends JosmAction {
/**
* Constructs a new {@code UpdateDataAction}.
*/
public UpdateDataAction() {
super(tr("Update data"),
"updatedata",
tr("Updates the objects in the active data layer from the server."),
Shortcut.registerShortcut("file:updatedata",
tr("File: {0}", tr("Update data")),
KeyEvent.VK_U, Shortcut.CTRL),
true);
putValue("help", ht("/Action/UpdateData"));
}
/**
* Refreshes the enabled state
*/
@Override
protected void updateEnabledState() {
setEnabled(getLayerManager().getEditLayer() != null && !Main.isOffline(OnlineResource.OSM_API));
}
@Override
public void actionPerformed(ActionEvent e) {
OsmDataLayer editLayer = getLayerManager().getEditLayer();
if (!isEnabled() || editLayer == null)
return;
List areas = new ArrayList<>();
for (DataSource ds : editLayer.data.getDataSources()) {
areas.add(new Area(ds.bounds.asRect()));
}
// The next two blocks removes every intersection from every DataSource Area
// This prevents downloading the same data numerous times at intersections
// and also skips smaller bounding boxes that are contained within larger ones entirely.
for (int i = 0; i < areas.size(); i++) {
for (int j = i+1; j < areas.size(); j++) {
areas.get(i).subtract(areas.get(j));
}
}
for (int i = areas.size()-1; i > 0; i--) {
for (int j = i-1; j > 0; j--) {
areas.get(i).subtract(areas.get(j));
}
}
List areasToDownload = new ArrayList<>();
for (Area a : areas) {
if (a.isEmpty()) {
continue;
}
areasToDownload.add(a);
}
if (areasToDownload.isEmpty()) {
// no bounds defined in the dataset? we update all primitives in the data set using a series of multi fetch requests
UpdateSelectionAction.updatePrimitives(editLayer.data.allPrimitives());
} else {
// bounds defined? => use the bbox downloader
final PleaseWaitProgressMonitor monitor = new PleaseWaitProgressMonitor(tr("Download data"));
final Future> future = new DownloadTaskList().download(false /* no new layer */, areasToDownload, true, false, monitor);
waitFuture(future, monitor);
}
}
}