145 lines
5.2 KiB
Python
145 lines
5.2 KiB
Python
# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
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# Copyright 2014 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
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#
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# This file is part of qutebrowser.
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#
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# qutebrowser is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# qutebrowser is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with qutebrowser. If not, see <http://www.gnu.org/licenses/>.
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"""Bridge to provide readline-like shortcuts for QLineEdits."""
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from PyQt5.QtWidgets import QApplication, QLineEdit
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import qutebrowser.commands.utils as cmd
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class ReadlineBridge:
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"""Bridge which provides readline-like commands for the current QLineEdit.
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Attributes:
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deleted: Mapping from widgets to their last deleted text.
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"""
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def __init__(self):
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self.deleted = {}
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@property
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def widget(self):
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"""Get the currently active QLineEdit."""
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w = QApplication.instance().focusWidget()
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if isinstance(w, QLineEdit):
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return w
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else:
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return None
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@cmd.register(instance='rl_bridge', hide=True, modes=['command', 'prompt'])
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def rl_backward_char(self):
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"""Readline: Move back a character."""
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if self.widget is None:
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return
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self.widget.cursorBackward(False)
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@cmd.register(instance='rl_bridge', hide=True, modes=['command', 'prompt'])
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def rl_forward_char(self):
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"""Readline: Move forward a character."""
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if self.widget is None:
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return
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self.widget.cursorForward(False)
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@cmd.register(instance='rl_bridge', hide=True, modes=['command', 'prompt'])
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def rl_backward_word(self):
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"""Readline: Move back to the start of the current or previous word."""
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if self.widget is None:
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return
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self.widget.cursorWordBackward(False)
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@cmd.register(instance='rl_bridge', hide=True, modes=['command', 'prompt'])
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def rl_forward_word(self):
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"""Readline: Move forward to the end of the next word."""
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if self.widget is None:
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return
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self.widget.cursorWordForward(False)
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@cmd.register(instance='rl_bridge', hide=True, modes=['command', 'prompt'])
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def rl_beginning_of_line(self):
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"""Readline: Move to the start of the current line."""
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if self.widget is None:
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return
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self.widget.home(False)
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@cmd.register(instance='rl_bridge', hide=True, modes=['command', 'prompt'])
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def rl_end_of_line(self):
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"""Readline: Move to the end of the line."""
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if self.widget is None:
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return
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self.widget.end(False)
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@cmd.register(instance='rl_bridge', hide=True, modes=['command', 'prompt'])
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def rl_unix_line_discard(self):
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"""Readline: Kill backward from cursor to the beginning of the line."""
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if self.widget is None:
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return
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self.widget.home(True)
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self.deleted[self.widget] = self.widget.selectedText()
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self.widget.del_()
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@cmd.register(instance='rl_bridge', hide=True, modes=['command', 'prompt'])
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def rl_kill_line(self):
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"""Readline: Kill the text from point to the end of the line."""
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if self.widget is None:
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return
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self.widget.end(True)
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self.deleted[self.widget] = self.widget.selectedText()
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self.widget.del_()
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@cmd.register(instance='rl_bridge', hide=True, modes=['command', 'prompt'])
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def rl_unix_word_rubout(self):
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"""Readline: Kill the word behind point."""
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if self.widget is None:
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return
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self.widget.cursorWordBackward(True)
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self.deleted[self.widget] = self.widget.selectedText()
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self.widget.del_()
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@cmd.register(instance='rl_bridge', hide=True, modes=['command', 'prompt'])
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def rl_kill_word(self):
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"""Readline: Kill from point to the end of the current word."""
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if self.widget is None:
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return
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self.widget.cursorWordForward(True)
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self.deleted[self.widget] = self.widget.selectedText()
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self.widget.del_()
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@cmd.register(instance='rl_bridge', hide=True, modes=['command', 'prompt'])
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def rl_yank(self):
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"""Readline: Yank the top of the kill ring into the buffer at point."""
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if self.widget is None or self.widget not in self.deleted:
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return
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self.widget.insert(self.deleted[self.widget])
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@cmd.register(instance='rl_bridge', hide=True, modes=['command', 'prompt'])
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def rl_delete_char(self):
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"""Readline: Delete the character at point."""
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if self.widget is None:
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return
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self.widget.del_()
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@cmd.register(instance='rl_bridge', hide=True, modes=['command', 'prompt'])
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def rl_backward_delete_char(self):
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"""Readline: Delete the character behind the cursor."""
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if self.widget is None:
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return
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self.widget.backspace()
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