private void ensurePositionCategoryInstalled(final IDocument document, LinkedModeModel model) {
if (!document.containsPositionCategory(getCategory())) {
document.addPositionCategory(getCategory());
fUpdater = new InclusivePositionUpdater(getCategory());
document.addPositionUpdater(fUpdater);
model.addLinkingListener(
new ILinkedModeListener() {
/*
* @see org.eclipse.jface.text.link.ILinkedModeListener#left(org.eclipse.jface.text.link.LinkedModeModel, int)
*/
@Override
public void left(LinkedModeModel environment, int flags) {
ensurePositionCategoryRemoved(document);
}
@Override
public void suspend(LinkedModeModel environment) {}
@Override
public void resume(LinkedModeModel environment, int flags) {}
});
}
}
private void ensurePositionCategoryRemoved(IDocument document) {
if (document.containsPositionCategory(getCategory())) {
try {
document.removePositionCategory(getCategory());
} catch (BadPositionCategoryException e) {
// ignore
}
document.removePositionUpdater(fUpdater);
}
}