+ * Open the Groovy console
+ */
+ void openGroovyConsole()
+ {
+ groovyConsole = new groovy.ui.Console();
+
+ /*
+ * bind groovy variable 'Jalview' to the Desktop object
+ */
+ groovyConsole.setVariable("Jalview", this);
+
+ /*
+ * start the console
+ */
+ groovyConsole.run();
+
+ /*
+ * Allow only one console at a time, so that the AlignFrame menu option
+ * 'Calculate | Run Groovy script' is unambiguous.
+ * Disable 'new console', and enable 'Run script', when the console is
+ * opened, and the reverse when it is closed
+ */
+ Window window = (Window) groovyConsole.getFrame();
+ window.addWindowListener(new WindowAdapter()
+ {
+ @Override
+ public void windowClosed(WindowEvent e)
+ {
+ groovyShell.setEnabled(true);
+ enableExecuteGroovy(false);
+ }
+ });
+
+ /*
+ * if we got this far, enable 'Run Groovy' in AlignFrame menus
+ * and disable opening a second console
+ */
+ groovyShell.setEnabled(false);
+ enableExecuteGroovy(true);
+ }
+
+ /**
+ * Enable or disable 'Run Groovy script' in AlignFrame calculate menus
+ *
+ * @param enabled
+ */
+ public void enableExecuteGroovy(boolean enabled)
+ {
+ AlignFrame[] alignFrames = getAlignFrames();
+ if (alignFrames != null)
+ {
+ for (AlignFrame af : alignFrames)
+ {
+ af.setGroovyEnabled(enabled);
+ }
+ }
+ }
+
+ /**