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110 lines
2.5 KiB
110 lines
2.5 KiB
"""
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Clipboard for command line interface.
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"""
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from __future__ import unicode_literals
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from abc import ABCMeta, abstractmethod
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from six import with_metaclass
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import six
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from prompt_toolkit.selection import SelectionType
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__all__ = [
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'Clipboard',
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'ClipboardData',
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'DummyClipboard',
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'DynamicClipboard',
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]
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class ClipboardData(object):
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"""
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Text on the clipboard.
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:param text: string
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:param type: :class:`~prompt_toolkit.selection.SelectionType`
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"""
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def __init__(self, text='', type=SelectionType.CHARACTERS):
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assert isinstance(text, six.string_types)
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assert type in (SelectionType.CHARACTERS, SelectionType.LINES, SelectionType.BLOCK)
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self.text = text
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self.type = type
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class Clipboard(with_metaclass(ABCMeta, object)):
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"""
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Abstract baseclass for clipboards.
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(An implementation can be in memory, it can share the X11 or Windows
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keyboard, or can be persistent.)
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"""
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@abstractmethod
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def set_data(self, data):
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"""
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Set data to the clipboard.
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:param data: :class:`~.ClipboardData` instance.
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"""
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def set_text(self, text): # Not abstract.
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"""
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Shortcut for setting plain text on clipboard.
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"""
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assert isinstance(text, six.string_types)
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self.set_data(ClipboardData(text))
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def rotate(self):
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"""
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For Emacs mode, rotate the kill ring.
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"""
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@abstractmethod
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def get_data(self):
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"""
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Return clipboard data.
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"""
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class DummyClipboard(Clipboard):
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"""
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Clipboard implementation that doesn't remember anything.
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"""
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def set_data(self, data):
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pass
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def set_text(self, text):
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pass
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def rotate(self):
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pass
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def get_data(self):
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return ClipboardData()
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class DynamicClipboard(Clipboard):
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"""
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Clipboard class that can dynamically returns any Clipboard.
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:param get_clipboard: Callable that returns a :class:`.Clipboard` instance.
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"""
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def __init__(self, get_clipboard):
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assert callable(get_clipboard)
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self.get_clipboard = get_clipboard
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def _clipboard(self):
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clipboard = self.get_clipboard() or DummyClipboard()
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assert isinstance(clipboard, Clipboard)
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return clipboard
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def set_data(self, data):
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self._clipboard().set_data(data)
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def set_text(self, text):
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self._clipboard().set_text(text)
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def rotate(self):
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self._clipboard().rotate()
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def get_data(self):
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return self._clipboard().get_data()
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