public void updateTitle() {
if (frame != null) {
if (engine.getActivePathway() == null) {
frame.setTitle(engine.getApplicationName());
} else {
boolean changeStatus = engine.getActivePathway().hasChanged();
// get filename, or (New Pathway) if current pathway hasn't been opened yet
String fname =
(engine.getActivePathway().getSourceFile() == null)
? "(New Pathway)"
: engine.getActivePathway().getSourceFile().getName();
frame.setTitle((changeStatus ? "*" : "") + fname + " - " + engine.getApplicationName());
}
}
}
public void applicationEvent(ApplicationEvent e) {
switch (e.getType()) {
case PATHWAY_OPENED:
case PATHWAY_NEW:
updateTitle();
engine.getActivePathway().addStatusFlagListener(SwingEngine.this);
break;
}
}
public boolean exportPathway(final File f) {
if (mayOverwrite(f)) {
final ProgressKeeper pk = new ProgressKeeper();
final ProgressDialog d =
new ProgressDialog(
JOptionPane.getFrameForComponent(getApplicationPanel()), "", pk, false, true);
// create a clone so we can safely act on it in a worker thread.
final Pathway clone = engine.getActivePathway().clone();
SwingWorker<Boolean, Boolean> sw =
new SwingWorker<Boolean, Boolean>() {
private List<String> warnings;
@Override
protected Boolean doInBackground() {
try {
pk.setTaskName("Exporting pathway");
warnings = engine.exportPathway(f, clone);
return true;
} catch (ConverterException e) {
handleConverterException(e.getMessage(), frame, e);
return false;
} finally {
pk.finished();
}
}
@Override
public void done() {
if (warnings != null && warnings.size() > 0) {
OkCancelDialog dlg =
new OkCancelDialog(frame, "Conversion warnings", getFrame(), true);
JTextArea area = new JTextArea(60, 30);
for (String w : warnings) area.append(w + "\n");
dlg.setDialogComponent(area);
dlg.pack();
dlg.setVisible(true);
}
}
};
return processTask(pk, d, sw);
}
return false;
}
public boolean savePathway() {
Pathway pathway = engine.getActivePathway();
boolean result = true;
// Overwrite the existing xml file.
// If the target file is read-only, let the user select a new pathway
if (pathway.getSourceFile() != null && pathway.getSourceFile().canWrite()) {
try {
engine.savePathway(pathway.getSourceFile());
} catch (ConverterException e) {
handleConverterException(e.getMessage(), null, e);
}
} else {
result = savePathwayAs();
}
return result;
}
/**
* Call this when the user is about to perform an action that could lead to discarding the current
* pathway. (For example when creating a new pathway)
*
* <p>Checks if there are any unsaved changes, and asks the user if they want to save those
* changes.
*
* @return true if the user allows discarding the pathway, possibly after saving.
*/
public boolean canDiscardPathway() {
Pathway pathway = engine.getActivePathway();
// checking not necessary if there is no pathway or if pathway is not changed.
if (pathway == null || !pathway.hasChanged()) return true;
int result =
JOptionPane.showConfirmDialog(
frame,
"Save changes?",
"Your pathway has changed. Do you want to save?",
JOptionPane.YES_NO_CANCEL_OPTION,
JOptionPane.QUESTION_MESSAGE);
if (result == JOptionPane.CANCEL_OPTION) // cancel
{
return false;
} else if (result == JOptionPane.YES_OPTION) // yes
{
// return false if save is cancelled.
return (savePathway());
}
// yes or no
return true;
}
