ui_components.py 文件源码

def keyPressEvent(self, ev):
        super().keyPressEvent(ev)

        # arrow keys are delegated to the result list
        if ev.key() in [Qt.Key_Up, Qt.Key_Down]:
            self.parent().parent().overlay.l1.keyPressEvent(ev)
            return

        elif ev.key() == Qt.Key_Return:
            self.parent().parent().goto_result()
            return

        # only search when query is long enough and different from last (not
        # just cursor changes)
        length_threshold = 2
        length_criteria = len(self.text()) >= length_threshold
        if self.text() != self.query_old and length_criteria:
            self.parent().parent().search_with(self.text())
        self.parent().parent().overlay.update_visibility(length_criteria)

        self.query_old = self.text()