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"""
Clipboard for command line interface.
"""
from __future__ import annotations
from abc import ABCMeta, abstractmethod
from typing import Callable
from prompt_toolkit.selection import SelectionType
__all__ = [
"Clipboard",
"ClipboardData",
"DummyClipboard",
"DynamicClipboard",
]
class ClipboardData:
"""
Text on the clipboard.
:param text: string
:param type: :class:`~prompt_toolkit.selection.SelectionType`
"""
def __init__(
self, text: str = "", type: SelectionType = SelectionType.CHARACTERS
) -> None:
self.text = text
self.type = type
class Clipboard(metaclass=ABCMeta):
"""
Abstract baseclass for clipboards.
(An implementation can be in memory, it can share the X11 or Windows
keyboard, or can be persistent.)
"""
@abstractmethod
def set_data(self, data: ClipboardData) -> None:
"""
Set data to the clipboard.
:param data: :class:`~.ClipboardData` instance.
"""
def set_text(self, text: str) -> None: # Not abstract.
"""
Shortcut for setting plain text on clipboard.
"""
self.set_data(ClipboardData(text))
def rotate(self) -> None:
"""
For Emacs mode, rotate the kill ring.
"""
@abstractmethod
def get_data(self) -> ClipboardData:
"""
Return clipboard data.
"""
class DummyClipboard(Clipboard):
"""
Clipboard implementation that doesn't remember anything.
"""
def set_data(self, data: ClipboardData) -> None:
pass
def set_text(self, text: str) -> None:
pass
def rotate(self) -> None:
pass
def get_data(self) -> ClipboardData:
return ClipboardData()
class DynamicClipboard(Clipboard):
"""
Clipboard class that can dynamically returns any Clipboard.
:param get_clipboard: Callable that returns a :class:`.Clipboard` instance.
"""
def __init__(self, get_clipboard: Callable[[], Clipboard | None]) -> None:
self.get_clipboard = get_clipboard
def _clipboard(self) -> Clipboard:
return self.get_clipboard() or DummyClipboard()
def set_data(self, data: ClipboardData) -> None:
self._clipboard().set_data(data)
def set_text(self, text: str) -> None:
self._clipboard().set_text(text)
def rotate(self) -> None:
self._clipboard().rotate()
def get_data(self) -> ClipboardData:
return self._clipboard().get_data()
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