package org.osm2world.viewer.control.actions;
import java.awt.Cursor;
import java.awt.event.ActionEvent;
import java.io.File;
import java.util.Observable;
import java.util.Observer;
import javax.swing.AbstractAction;
import javax.swing.JFileChooser;
import javax.swing.filechooser.FileNameExtensionFilter;
import org.osm2world.viewer.model.Data;
import org.osm2world.viewer.model.MessageManager;
import org.osm2world.viewer.model.RenderOptions;
import org.osm2world.viewer.view.ProgressDialog;
import org.osm2world.viewer.view.ViewerFrame;
public abstract class AbstractExportAction
extends AbstractAction implements Observer {
protected final ViewerFrame viewerFrame;
protected final Data data;
protected final MessageManager messageManager;
protected final RenderOptions renderOptions;
private File lastPath = null;
protected AbstractExportAction(String name,
ViewerFrame viewerFrame, Data data,
MessageManager messageManager,
RenderOptions renderOptions) {
super(name);
this.viewerFrame = viewerFrame;
this.messageManager = messageManager;
this.data = data;
this.renderOptions = renderOptions;
setEnabled(false);
data.addObserver(this);
}
@Override
public void update(Observable o, Object arg) {
setEnabled(data.getConversionResults() != null);
}
protected boolean chooseDirectory() { return false; }
abstract protected FileNameExtensionFilter getFileNameExtensionFilter();
abstract protected void performExport(File file);
@Override
public void actionPerformed(ActionEvent arg0) {
File file = askFile();
if (file != null) {
new ExportFileThread(file).start();
}
}
private File askFile() {
JFileChooser chooser = new JFileChooser(lastPath);
chooser.setDialogTitle("Export file");
if (chooseDirectory()) {
chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
} else {
chooser.setFileFilter(getFileNameExtensionFilter());
}
int returnVal = chooser.showSaveDialog(null);
if (returnVal == JFileChooser.APPROVE_OPTION) {
File selectedFile = chooser.getSelectedFile();
lastPath = selectedFile.getParentFile();
/* make sure that file uses correct extension */
if (getFileNameExtensionFilter() != null &&
getFileNameExtensionFilter().getExtensions().length == 1) {
String extension = getFileNameExtensionFilter().getExtensions()[0];
if (!selectedFile.getPath().endsWith("." + extension)) {
selectedFile = new File(selectedFile.getPath() + "." + extension);
}
}
return selectedFile;
} else {
return null;
}
}
private class ExportFileThread extends Thread {
private final File file;
private ProgressDialog progressDialog;
public ExportFileThread(File file) {
super("ExportFileThread");
this.file = file;
}
@Override
public void run() {
viewerFrame.setCursor(Cursor
.getPredefinedCursor(Cursor.WAIT_CURSOR));
viewerFrame.setEnabled(false);
String progressDescription = "Export file";
if (getFileNameExtensionFilter() != null) {
progressDescription += " of type "
+ getFileNameExtensionFilter().getDescription();
}
progressDialog = new ProgressDialog(viewerFrame, progressDescription);
progressDialog.setProgress(null);
progressDialog.setText("Writing file: " + file.getAbsolutePath());
performExport(file);
progressDialog.dispose();
viewerFrame.setCursor(Cursor
.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
viewerFrame.setEnabled(true);
}
}
}