'Remember `filename` was accessed.'

def _remember(self, filename):

    if (filename in self.history):
        index = self.history.index(filename)
        del self.history[index]
        self.filesCB.removeItem(index)
    self.history.insert(0, filename)
    self.filesCB.insertItem(0, os.path.basename(filename), userData=filename)
    self.selectedIndex = 0
    self.filename = filename
    self.reloadbutton.setEnabled((self.selectedIndex != (-1)))
