更改默认字体

Signed-off-by: cz848 <cz848@sina.com>
popup增加两个参数

Signed-off-by: cz848 <cz848@sina.com>
增加对placeholder的初始化

Signed-off-by: cz848 <cz848@sina.com>
更新position，增加对$pos的判断

Signed-off-by: cz848 <cz848@sina.com>
删除旧兼容文件

Signed-off-by: cz848 <cz848@sina.com>