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"""
Provide a supercharged QTextEdit method to allow for Autocompletion
"""
from types import MethodType
from QtGui import *
from QtWidgets import *
from QtCore import *
has_qstring = True
try:
from code_saturne.Base.QtCore import QString
except ImportError:
has_qstring = False
# ------------------------------------------------------------------------------
# QTextEdit with autocompletion
def CompletionTextEdit(target):
target.completer = None
def setCompleter(target, completer):
if target.completer:
target.completer.activated.disconnect()
if not completer:
return
completer.setWidget(target)
completer.setCompletionMode(QCompleter.PopupCompletion)
completer.setCaseSensitivity(Qt.CaseInsensitive)
target.completer = completer
completer.setWidget(target)
completer.activated.connect(target.insertCompletion)
def insertCompletion(target, completion):
tc = target.textCursor()
if QT_API == "PYQT4" and has_qstring:
extra = (completion.length() -
target.completer.completionPrefix().length())
tc.movePosition(QTextCursor.Left)
tc.movePosition(QTextCursor.EndOfWord)
tc.insertText(completion.right(extra))
target.setTextCursor(tc)
elif QT_API == "PYQT5" or has_qstring == False:
extra = (len(completion) -
len(target.completer.completionPrefix()))
tc.movePosition(QTextCursor.Left)
tc.movePosition(QTextCursor.EndOfWord)
tc.insertText(completion[-extra:])
target.setTextCursor(tc)
def textUnderCursor(target):
tc = target.textCursor()
tc.select(QTextCursor.WordUnderCursor)
return tc.selectedText()
def focusInEvent(target, event):
if target.completer:
target.completer.setWidget(target);
QTextEdit.focusInEvent(target, event)
def keyPressEvent(target, event):
if target.completer and target.completer.popup().isVisible():
if event.key() in (
Qt.Key_Enter,
Qt.Key_Return,
Qt.Key_Escape,
Qt.Key_Tab,
Qt.Key_Backtab):
event.ignore()
return
## has ctrl-E been pressed??
isShortcut = (event.modifiers() == Qt.ControlModifier and
event.key() == Qt.Key_E)
if (not target.completer or not isShortcut):
QTextEdit.keyPressEvent(target, event)
## ctrl or shift key on it's own??
ctrlOrShift = event.modifiers() in (Qt.ControlModifier ,
Qt.ShiftModifier)
if QT_API == "PYQT4" and has_qstring:
if ctrlOrShift and event.text().isEmpty():
# ctrl or shift key on it's own
return
elif QT_API == "PYQT5" or has_qstring == False:
if ctrlOrShift and len(event.text()) < 1:
# ctrl or shift key on it's own
return
hasModifier = ((event.modifiers() != Qt.NoModifier) and
not ctrlOrShift)
completionPrefix = target.textUnderCursor()
# EOW test and compatibily with PyQt4/PyQt5
if QT_API == "PYQT4" and has_qstring:
eow = QString("~!@#$%^&*()_+{}|:\"<>?,./;'[]\\-=") #end of word
if (not isShortcut and (hasModifier or event.text().isEmpty() or
completionPrefix.length() < 2 or
eow.contains(event.text().right(1)))):
target.completer.popup().hide()
return
elif QT_API == "PYQT5" or has_qstring == False:
eow = "~!@#$%^&*()_+{}|:\"<>?,./;'[]\\-=" #end of word
if (not isShortcut and (hasModifier or len(event.text()) < 1 or
len(completionPrefix) < 2 or
event.text()[-1] in eow)):
target.completer.popup().hide()
return
if (completionPrefix != target.completer.completionPrefix()):
target.completer.setCompletionPrefix(completionPrefix)
popup = target.completer.popup()
popup.setCurrentIndex(
target.completer.completionModel().index(0,0))
cr = target.cursorRect()
cr.setWidth(target.completer.popup().sizeHintForColumn(0)
+ target.completer.popup().verticalScrollBar().sizeHint().width())
target.completer.complete(cr) ## popup it up!
# Define methods
target.setCompleter = MethodType(setCompleter,target)
target.insertCompletion = MethodType(insertCompletion,target)
target.textUnderCursor = MethodType(textUnderCursor,target)
target.focusInEvent = MethodType(focusInEvent,target)
target.keyPressEvent = MethodType(keyPressEvent,target)
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