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# The code below, as well as the associated test were adapted from |
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# qt-helpers, which was released under a 3-Clause BSD license: |
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# |
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# Copyright (c) 2015, Chris Beaumont and Thomas Robitaille |
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# |
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# All rights reserved. |
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# |
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# Redistribution and use in source and binary forms, with or without |
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# modification, are permitted provided that the following conditions are |
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# met: |
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# |
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# * Redistributions of source code must retain the above copyright |
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# notice, this list of conditions and the following disclaimer. |
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# * Redistributions in binary form must reproduce the above copyright |
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# notice, this list of conditions and the following disclaimer in the |
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# documentation and/or other materials provided with the |
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# distribution. |
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# * Neither the name of the Glue project nor the names of its |
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# contributors may be used to endorse or promote products derived |
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# from this software without specific prior written permission. |
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# |
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
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# IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
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# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR |
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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def patch_qcombobox(QComboBox): |
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""" |
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In PySide, using Python objects as userData in QComboBox causes |
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Segmentation faults under certain conditions. Even in cases where it |
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doesn't, findData does not work correctly. Likewise, findData also does not |
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work correctly with Python objects when using PyQt4. On the other hand, |
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PyQt5 deals with this case correctly. We therefore patch QComboBox when |
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using PyQt4 and PySide to avoid issues. |
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""" |
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from ..QtGui import QIcon |
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from ..QtCore import Qt, QObject |
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class userDataWrapper(): |
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""" |
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This class is used to wrap any userData object. If we don't do this, |
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then certain types of objects can cause segmentation faults or issues |
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depending on whether/how __getitem__ is defined. |
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""" |
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def __init__(self, data): |
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self.data = data |
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_addItem = QComboBox.addItem |
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View Code Duplication |
def addItem(self, *args, **kwargs): |
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if len(args) == 3 or (not isinstance(args[0], QIcon) |
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and len(args) == 2): |
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args, kwargs['userData'] = args[:-1], args[-1] |
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if 'userData' in kwargs: |
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kwargs['userData'] = userDataWrapper(kwargs['userData']) |
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_addItem(self, *args, **kwargs) |
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_insertItem = QComboBox.insertItem |
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View Code Duplication |
def insertItem(self, *args, **kwargs): |
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if len(args) == 4 or (not isinstance(args[1], QIcon) |
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and len(args) == 3): |
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args, kwargs['userData'] = args[:-1], args[-1] |
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if 'userData' in kwargs: |
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kwargs['userData'] = userDataWrapper(kwargs['userData']) |
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_insertItem(self, *args, **kwargs) |
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_setItemData = QComboBox.setItemData |
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def setItemData(self, index, value, role=Qt.UserRole): |
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value = userDataWrapper(value) |
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_setItemData(self, index, value, role=role) |
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_itemData = QComboBox.itemData |
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def itemData(self, index, role=Qt.UserRole): |
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userData = _itemData(self, index, role=role) |
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if isinstance(userData, userDataWrapper): |
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userData = userData.data |
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return userData |
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def findData(self, value): |
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for i in range(self.count()): |
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if self.itemData(i) == value: |
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return i |
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return -1 |
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QComboBox.addItem = addItem |
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QComboBox.insertItem = insertItem |
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QComboBox.setItemData = setItemData |
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QComboBox.itemData = itemData |
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QComboBox.findData = findData |
spyder-ide /
qtpy
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