private void refreshThemeDescriptionText() {
String description = null;
int idx = themeCombo.getSelectionIndex();
// idx == 0 is "Default" which has no description
if (idx > 0) {
IThemeDescriptor theme = WorkbenchPlugin.getDefault()
.getThemeRegistry().getThemes()[idx - 1];
description = theme.getDescription();
}
if (description == null) {
description = ""; //$NON-NLS-1$
}
themeDescriptionText.setText(description);