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from enum import Enum
from typing import TYPE_CHECKING, Callable, Dict, Optional
from prompt_toolkit.clipboard import ClipboardData
if TYPE_CHECKING:
from .key_bindings.vi import TextObject
from .key_processor import KeyPressEvent
__all__ = [
"InputMode",
"CharacterFind",
"ViState",
]
class InputMode(str, Enum):
value: str
INSERT = "vi-insert"
INSERT_MULTIPLE = "vi-insert-multiple"
NAVIGATION = "vi-navigation" # Normal mode.
REPLACE = "vi-replace"
REPLACE_SINGLE = "vi-replace-single"
class CharacterFind:
def __init__(self, character: str, backwards: bool = False) -> None:
self.character = character
self.backwards = backwards
class ViState:
"""
Mutable class to hold the state of the Vi navigation.
"""
def __init__(self) -> None:
#: None or CharacterFind instance. (This is used to repeat the last
#: search in Vi mode, by pressing the 'n' or 'N' in navigation mode.)
self.last_character_find: Optional[CharacterFind] = None
# When an operator is given and we are waiting for text object,
# -- e.g. in the case of 'dw', after the 'd' --, an operator callback
# is set here.
self.operator_func: Optional[
Callable[["KeyPressEvent", "TextObject"], None]
] = None
self.operator_arg: Optional[int] = None
#: Named registers. Maps register name (e.g. 'a') to
#: :class:`ClipboardData` instances.
self.named_registers: Dict[str, ClipboardData] = {}
#: The Vi mode we're currently in to.
self.__input_mode = InputMode.INSERT
#: Waiting for digraph.
self.waiting_for_digraph = False
self.digraph_symbol1: Optional[str] = None # (None or a symbol.)
#: When true, make ~ act as an operator.
self.tilde_operator = False
#: Register in which we are recording a macro.
#: `None` when not recording anything.
# Note that the recording is only stored in the register after the
# recording is stopped. So we record in a separate `current_recording`
# variable.
self.recording_register: Optional[str] = None
self.current_recording: str = ""
# Temporary navigation (normal) mode.
# This happens when control-o has been pressed in insert or replace
# mode. The user can now do one navigation action and we'll return back
# to insert/replace.
self.temporary_navigation_mode = False
@property
def input_mode(self) -> InputMode:
"Get `InputMode`."
return self.__input_mode
@input_mode.setter
def input_mode(self, value: InputMode) -> None:
"Set `InputMode`."
if value == InputMode.NAVIGATION:
self.waiting_for_digraph = False
self.operator_func = None
self.operator_arg = None
self.__input_mode = value
def reset(self) -> None:
"""
Reset state, go back to the given mode. INSERT by default.
"""
# Go back to insert mode.
self.input_mode = InputMode.INSERT
self.waiting_for_digraph = False
self.operator_func = None
self.operator_arg = None
# Reset recording state.
self.recording_register = None
self.current_recording = ""
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