Method updateNavigationButtons

src/app/ui/file_selector.cpp:655–674

}

void FileSelector::updateNavigationButtons()
{
  // Update the state of the go back button: if the navigation-history
  // has two elements and the navigation-position isn't the first one.
  goBackButton()->setEnabled(navigation_history->size() > 1 &&
                             (navigation_position.isNull() ||
                              navigation_position.getIterator() != navigation_history->begin()));

  // Update the state of the go forward button: if the
  // navigation-history has two elements and the navigation-position
  // isn't the last one.
  goForwardButton()->setEnabled(navigation_history->size() > 1 &&
                                (navigation_position.isNull() ||
                                 navigation_position.getIterator() != navigation_history->end()-1));

  // Update the state of the go up button: if the current-folder isn't
  // the root-item.
  IFileItem* currentFolder = m_fileList->getCurrentFolder();
  goUpButton()->setEnabled(currentFolder != FileSystemModule::instance()->getRootFileItem());
}

void FileSelector::addInNavigationHistory(IFileItem* folder)
{