{
if (!continueUnsavedChangesWarningIfNecessary())
return;
JFileChooser fc = new JasonFileChooser(EditorWindow.this.model.getExpansionDirectory());
int returnValue = fc.showOpenDialog(EditorWindow.this);
if (returnValue != JFileChooser.APPROVE_OPTION)
return;
File file = fc.getSelectedFile();
if (file == null || !file.exists() || file.isDirectory())