// License: GPL. For details, see LICENSE file.
package org.openstreetmap.josm.gui.datatransfer;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.io.IOException;
import java.util.Arrays;
import java.util.Collection;
import javax.swing.JComponent;
import javax.swing.TransferHandler;
import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.data.coor.EastNorth;
import org.openstreetmap.josm.gui.datatransfer.importers.AbstractOsmDataPaster;
import org.openstreetmap.josm.gui.layer.OsmDataLayer;
import org.openstreetmap.josm.tools.JosmRuntimeException;
import org.openstreetmap.josm.tools.bugreport.BugReport;
/**
* A transfer handler class that allows you to manage a prioritized stack of transfer handlers.
* @author Michael Zangl
* @since 10881
*/
public abstract class AbstractStackTransferHandler extends TransferHandler {
protected abstract Collection<AbstractOsmDataPaster> getSupportedPasters();
@Override
public int getSourceActions(JComponent c) {
return COPY;
}
@Override
public boolean canImport(TransferSupport support) {
// import everything for now, only support copy.
for (AbstractOsmDataPaster df : getSupportedPasters()) {
if (df.supports(support)) {
return true;
}
}
return false;
}
@Override
public boolean importData(TransferSupport support) {
return importData(support, Main.getLayerManager().getEditLayer(), null);
}
protected boolean importData(TransferSupport support, OsmDataLayer layer, EastNorth center) {
for (AbstractOsmDataPaster df : getSupportedPasters()) {
if (df.supports(support)) {
try {
if (Main.isDebugEnabled()) {
Main.debug("{0} pasting {1} at {2}", df.getClass().getSimpleName(), Arrays.toString(support.getDataFlavors()), center);
}
if (df.importData(support, layer, center)) {
return true;
}
} catch (UnsupportedFlavorException | IOException e) {
Main.warn(e);
} catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException e) {
BugReport.intercept(e).put("paster", df).put("flavors", support::getDataFlavors).warn();
}
}
}
return super.importData(support);
}
}