public void evaluate() {
try {
// clear problems and console messages
problemsView.setText("");
consoleView.setText("");
// update status view
statusView.setText(" Parsing ...");
tabbedPane.setSelectedIndex(0);
LispExpr root = Parser.parse(textView.getText());
statusView.setText(" Running ...");
tabbedPane.setSelectedIndex(1);
// update run button
runButton.setIcon(stopImage);
runButton.setActionCommand("Stop");
// start run thread
runThread = new RunThread(root);
runThread.start();
} catch (SyntaxError e) {
tabbedPane.setSelectedIndex(0);
System.err.println(
"Syntax Error at " + e.getLine() + ", " + e.getColumn() + " : " + e.getMessage());
} catch (Error e) {
// parsing error
System.err.println(e.getMessage());
statusView.setText(" Errors.");
}
}
private JButton makeToolbarButton(String name, String toolTipText, String action) {
// Create and initialize the button.
JButton button = new JButton(makeImageIcon(name));
button.setToolTipText(toolTipText);
button.setActionCommand(action);
button.addActionListener(this);
return button;
}
public void runFinished() {
// program execution finished so update
// status and run button accordingly
if (runThread == null) {
// _runThread = null only if
// execution stopped by user via
// run button
statusView.setText(" Stopped.");
} else {
statusView.setText(" Done.");
}
runButton.setActionCommand("Run");
runButton.setIcon(runImage);
}