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)
python类KEY_END的实例源码
def on_key(self, ch):
if not self.items:
return False
if ch == curses.KEY_UP:
self.selected = max(self.selected - 1, 0)
elif ch == curses.KEY_DOWN:
self.selected = min(len(self.selectable) - 1, self.selected + 1)
elif ch == curses.KEY_HOME:
self.selected = 0
elif ch == curses.KEY_END:
self.selected = len(self.selectable) - 1
elif ch == curses.KEY_ENTER:
key, title = self.items[self.selectable[self.selected]]
self.select(key)
return True # no update necessary
else:
return False
self.update()
return True
def on_key(self, ch):
x = self.pos
# ascii 32-126 (inclusive)
if curses.ascii.isprint(ch):
if len(self.value) < self.max_length:
self.value = self.value[:x] + chr(ch) + self.value[x:]
self.pos += 1
elif ch == curses.KEY_LEFT:
if x > 0:
self.pos -= 1
elif ch == curses.KEY_RIGHT:
if x < len(self.value):
self.pos += 1
elif ch == curses.KEY_BACKSPACE:
if x > 0:
self.value = self.value[:x - 1] + self.value[x:]
self.pos -= 1
elif ch == curses.KEY_DC:
if x < len(self.value):
self.value = self.value[:x] + self.value[x + 1:]
elif ch == curses.KEY_HOME:
self.pos = 0
elif ch == curses.KEY_END:
self.pos = len(self.value)
else:
return False
self.update()
return True
def test_should_go_to_end(self):
input = TextInput(max_len=10)
input.put('a')
input.put('b')
input.put(curses.KEY_HOME)
input.put(curses.KEY_END)
self.assertEqual(2, input.cursor)
def set_up_handlers(self):
super().set_up_handlers()
self.add_handlers({
curses.KEY_END: self.h_end,
curses.KEY_HOME: self.h_home
})
def keys_init(self):
"""Define methods for each key.
"""
self.keys = {
curses.KEY_BACKSPACE: self.backspace,
CTRL('h'): self.backspace,
curses.ascii.BS: self.backspace,
curses.ascii.DEL: self.backspace,
curses.ascii.ETX: self.close,
curses.KEY_DC: self.del_char,
CTRL('d'): self.del_char,
CTRL('u'): self.del_to_bol,
CTRL('k'): self.del_to_eol,
curses.KEY_DOWN: self.down,
CTRL('n'): self.down,
curses.KEY_END: self.end,
CTRL('e'): self.end,
curses.KEY_F1: self.help,
curses.KEY_HOME: self.home,
CTRL('a'): self.home,
curses.KEY_ENTER: self.insert_line_or_quit,
curses.ascii.NL: self.insert_line_or_quit,
curses.ascii.LF: self.insert_line_or_quit,
"\n": self.insert_line_or_quit,
curses.KEY_LEFT: self.left,
CTRL('b'): self.left,
curses.KEY_NPAGE: self.page_down,
curses.KEY_PPAGE: self.page_up,
CTRL('v'): self.paste,
CTRL('x'): self.quit,
curses.KEY_F2: self.quit,
curses.KEY_F3: self.quit_nosave,
curses.ascii.ESC: self.quit_nosave,
curses.KEY_RESIZE: self.resize,
-1: self.resize,
curses.KEY_RIGHT: self.right,
CTRL('f'): self.right,
curses.KEY_UP: self.up,
CTRL('p'): self.up,
}
def on_key(self, ch):
if not self.items:
return False
if ch == curses.KEY_UP:
if self.selected == 0:
return False
self.selected -= 1
# Selection is outside view, scroll up
if self.selected - self.offset < 0:
self.offset = self.selected
elif ch == curses.KEY_DOWN:
if self.selected == len(self.items) - 1:
return False
self.selected += 1
# Selection is outside view, scroll down
if self.selected - self.offset >= self.h:
self.offset = self.selected - self.h + 1
elif ch == curses.KEY_HOME:
self.selected = 0
self.offset = 0
elif ch == curses.KEY_END:
self.selected = len(self.items) - 1
self.offset = max(0, self.selected - self.h + 1)
elif ch == curses.KEY_ENTER:
key, title, action = self.items[self.selected]
self.select(key)
return True # no update necessary
else:
return False
self.update()
return True
