103 lines
4.1 KiB
Python
103 lines
4.1 KiB
Python
# -*- coding: utf-8 -*-
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""" Contains the AutoCompleteMode """
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import logging
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from pyqode.qt import QtCore
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from pyqode.core.api import TextHelper
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from pyqode.core.api.mode import Mode
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class AutoCompleteMode(Mode):
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""" Automatically complete quotes and parentheses
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Generic auto complete mode that automatically completes the following
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symbols:
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- " -> "
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- ' -> '
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- ( -> )
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- [ -> ]
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- { -> }
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"""
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#: Auto complete mapping, maps input key with completion text.
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MAPPING = {'"': '"', "'": "'", "(": ")", "{": "}", "[": "]"}
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#: The format to use for each symbol in mapping when there is a selection
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SELECTED_QUOTES_FORMATS = {key: '%s%s%s' for key in MAPPING.keys()}
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#: The format to use for each symbol in mapping when there is no selection
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QUOTES_FORMATS = {key: '%s' for key in MAPPING.keys()}
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def __init__(self):
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super(AutoCompleteMode, self).__init__()
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self.logger = logging.getLogger(__name__)
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self._ignore_post = False
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def on_state_changed(self, state):
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if state:
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self.editor.post_key_pressed.connect(self._on_post_key_pressed)
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self.editor.key_pressed.connect(self._on_key_pressed)
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else:
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self.editor.post_key_pressed.disconnect(self._on_post_key_pressed)
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self.editor.key_pressed.disconnect(self._on_key_pressed)
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def _on_post_key_pressed(self, event):
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if not event.isAccepted() and not self._ignore_post:
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txt = event.text()
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next_char = TextHelper(self.editor).get_right_character()
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if txt in self.MAPPING:
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to_insert = self.MAPPING[txt]
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if (not next_char or next_char in self.MAPPING.keys() or
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next_char in self.MAPPING.values() or
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next_char.isspace()):
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TextHelper(self.editor).insert_text(
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self.QUOTES_FORMATS[txt] % to_insert)
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self._ignore_post = False
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def _on_key_pressed(self, event):
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txt = event.text()
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cursor = self.editor.textCursor()
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from pyqode.qt import QtGui
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assert isinstance(cursor, QtGui.QTextCursor)
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if cursor.hasSelection():
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# quoting of selected text
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if event.text() in self.MAPPING.keys():
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first = event.text()
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last = self.MAPPING[event.text()]
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cursor.insertText(
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self.SELECTED_QUOTES_FORMATS[event.text()] % (
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first, cursor.selectedText(), last))
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self.editor.setTextCursor(cursor)
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event.accept()
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else:
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self._ignore_post = True
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return
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next_char = TextHelper(self.editor).get_right_character()
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self.logger.debug('next char: %s', next_char)
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ignore = False
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if event.key() == QtCore.Qt.Key_Backspace:
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# get the character that will get deleted
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tc = self.editor.textCursor()
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pos = tc.position()
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tc.movePosition(tc.Left)
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tc.movePosition(tc.Right, tc.KeepAnchor)
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del_char = tc.selectedText()
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if del_char in self.MAPPING and self.MAPPING[del_char] == next_char:
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tc.beginEditBlock()
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tc.movePosition(tc.Right, tc.KeepAnchor)
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tc.insertText('')
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tc.setPosition(pos - 2)
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tc.endEditBlock()
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self.editor.setTextCursor(tc)
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ignore = True
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elif txt and next_char == txt and next_char in self.MAPPING:
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ignore = True
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elif event.text() == ')' or event.text() == ']' or event.text() == '}':
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# if typing the same symbol twice, the symbol should not be written
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# and the cursor moved just after the char
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# e.g. if you type ) just before ), the cursor will just move after
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# the existing )
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if next_char == event.text():
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ignore = True
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if ignore:
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event.accept()
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TextHelper(self.editor).clear_selection()
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TextHelper(self.editor).move_right()
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