text_input.py 文件源码

def put(self, char):
        pos = self._cursor.position
        cnt = len(self._text)

        if isinstance(char, str) and cnt < self._max_len and ord(char) >= 0x20:
            self._text = self._text[:pos] + char + self._text[pos:]
            self._cursor.count = len(self._text)
            self._cursor.position = pos + 1
        elif char == curses.KEY_LEFT and pos > 0:
            self._cursor.position = pos - 1
        elif char == curses.KEY_RIGHT and pos < cnt:
            self._cursor.position = pos + 1
        elif char == curses.KEY_HOME:
            self._cursor.position = 0
        elif char == curses.KEY_END:
            self._cursor.position = cnt
        elif char == curses.KEY_BACKSPACE and pos > 0:
            self._text = self._text[:pos - 1] + self._text[pos:]
            self._cursor.count = len(self._text)
            self._cursor.position = pos - 1
        elif char == curses.KEY_DC:
            self._text = self._text[:pos] + self._text[pos + 1:]
            self._cursor.count = len(self._text)