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List: pykde
Subject: [PyQt] Segfault with PyQt
From: "Alexandre Badez" <alexandre.badez () gmail ! com>
Date: 2008-01-17 16:44:47
Message-ID: 20f595e90801170844m44e04a86ya89d2a4b62d65a05 () mail ! gmail ! com
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Hye every body,
I've got a problem with PyQt (4.1.1 (262401)) /Qt (v4.1.4 (262404)).
I'm coding for windows (W2K), and Unix (Solaris 5.8)
As you see in Error_Simple.py, the application crash if the view is a tree
but not a table nor a list view.
My question is, what am I doing wrong in my model, that make it appen ?
Is it a bug ?
Error.py, is a bit more complex script that test (kind of) every
possibilities of this bug.
--
Alex
[Attachment #5 (text/html)]
Hye every body,<br><br>I've got a problem with PyQt (4.1.1 (262401)) /Qt (v4.1.4 \
(262404)).<br>I'm coding for windows (W2K), and Unix (Solaris 5.8)<br><br>As you \
see in Error_Simple.py, the application crash if the view is a tree but not a table \
nor a list view. <br><br>My question is, what am I doing wrong in my model, that make \
it appen ?<br>Is it a bug ?<br><br>Error.py, is a bit more complex script that test \
(kind of) every possibilities of this bug.<br clear="all"><br>-- <br> Alex<br>
["Error.py" (text/plain)]
#! /bin/env python
from PyQt4 import QtGui
from PyQt4 import QtCore
import sys
import os
import time
lProb = []
class myModel(QtCore.QAbstractItemModel):
def __init__(self, parent=None):
self._myDataStruct = None
super(myModel, self).__init__(parent)
def setDataStruct(self, myDataStruct):
self._myDataStruct = myDataStruct
def columnCount(self, parent=None):
return 1
def data(self, index, role):
if index.isValid() and role == QtCore.Qt.DisplayRole:
data = QtCore.QVariant(str(self.getMyObjectFromIndex(index)))
else:
data = QtCore.QVariant()
return data
def flags(self, index):
if not index.isValid():
flags = QtCore.Qt.ItemIsEnabled
else:
flags = QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable
return flags
def headerData(self, section, orientation, role):
if role == QtCore.Qt.DisplayRole:
v = QtCore.QVariant("header")
else:
v = QtCore.QVariant()
return v
def index(self, row, column, parent):
if (parent is None) or (not parent.isValid()):
parentNode = self._myDataStruct
else:
parentNode = self._myDataStruct.getMyObjectFromIndex(parent)
if parentNode is None:
parentNode = self._myDataStruct
try:
childNode = parentNode[row]
except IndexError:
childNode = None
if childNode is not None:
return self.createIndex(row, column, id(childNode))
else:
return QtCore.QModelIndex()
def parent(self, index):
parentIndex = None
if not index.isValid():
parentIndex = QtCore.QModelIndex()
else:
childNode = self.getMyObjectFromIndex(index)
if childNode is None:
parentIndex = QtCore.QModelIndex()
else:
parentIndex = self.getIndexFromMyObject(self._myDataStruct)
return parentIndex
def rowCount(self, parent):
if not parent.isValid():
node = self._myDataStruct
else:
node = self.getMyObjectFromIndex(parent)
return len(node)
def getIndexFromMyObject(self, myObject):
try:
dataIndex = self._myDataStruct.getIndex(myObject)
except ValueError:
index = QtCore.QModelIndex()
else:
index = self.createIndex(dataIndex, 0, id(myObject))
return index
def getMyObjectFromIndex(self, index):
return self._myDataStruct.getData(index.internalId())
def crashMethod11(self):
QtGui.QDialog().exec_()
self.beginRemoveRows(QtCore.QModelIndex(), 0, 0)
self.endRemoveRows()
return True
def crashMethod12(self):
self.beginRemoveRows(QtCore.QModelIndex(), 0, 0)
QtGui.QDialog().exec_()
self.endRemoveRows()
return True
def crashMethod13(self):
self.beginRemoveRows(QtCore.QModelIndex(), 0, 0)
self.endRemoveRows()
QtGui.QDialog().exec_()
return True
def crashMethod21(self):
QtGui.QDialog().exec_()
self.beginRemoveRows(QtCore.QModelIndex(), 0, 0)
QtGui.QDialog().exec_()
self.endRemoveRows()
return True
def crashMethod22(self):
QtGui.QDialog().exec_()
self.beginRemoveRows(QtCore.QModelIndex(), 0, 0)
self.endRemoveRows()
QtGui.QDialog().exec_()
return True
def crashMethod23(self):
self.beginRemoveRows(QtCore.QModelIndex(), 0, 0)
QtGui.QDialog().exec_()
self.endRemoveRows()
QtGui.QDialog().exec_()
return True
def crashMethod3(self):
QtGui.QDialog().exec_()
self.beginRemoveRows(QtCore.QModelIndex(), 0, 0)
QtGui.QDialog().exec_()
self.endRemoveRows()
QtGui.QDialog().exec_()
return True
class myDataStruct(object):
def __init__(self):
self._data = []
self._dico = {}
def __str__(self):
return str(self._dico)
def __iter__(self):
return self._data.__iter__()
def __getitem__(self, index):
return self._data[index]
def __len__(self):
return len(self._data)
def addData(self, myObjectToStore):
self._data.append(myObjectToStore)
self._dico[id(myObjectToStore)] = myObjectToStore
def getData(self, id_):
return self._dico[id_]
def getIndex(self, myObject):
return self._data.index(myObject)
class myObjectStored(object):
def __init__(self):
self._data = None
def __len__(self):
return 0
def setData(self, data):
self._data = data
def __str__(self):
return self._data
class myTest(object):
def __init__(self):
self._data = myDataStruct()
self._model = None
self._proxy = None
def _initModelAndProxy(self):
self._model = myModel()
self._model.setDataStruct(self._data)
self._proxy = QtGui.QSortFilterProxyModel()
self._proxy.setSourceModel(self._model)
def _closeModelAndProxy(self):
del self._model
del self._proxy
def addObjectToData(self):
obj = myObjectStored()
obj.setData("obj "+ str(id(obj)))
self._data.addData(obj)
def testAllView(self):
self._testViewWithMethod("crashMethod11")
self._testViewWithMethod("crashMethod12")
self._testViewWithMethod("crashMethod13")
self._testViewWithMethod("crashMethod21")
self._testViewWithMethod("crashMethod22")
self._testViewWithMethod("crashMethod23")
self._testViewWithMethod("crashMethod3")
def _testViewWithMethod(self, crashMethodName):
print "**********************************\n\t\tTest All View with:"
for d in self._data:
print "\t%(name)s\t%(id)d" % {
'name' : str(d),
'id' : id(d)}
print "\t\tand method: ", crashMethodName
self._testView(self._getListView, crashMethodName)
self._testView(self._getTableView, crashMethodName)
self._testView(self._getTreeView, crashMethodName)
def _getListView(self):
return QtGui.QListView, "View"
def _getTableView(self):
return QtGui.QTableView, "Table"
def _getTreeView(self):
return QtGui.QTreeView, "Tree"
def _testView(self, factory, crashMethodName):
clsView, name = factory()
print name
self._initModelAndProxy()
view = clsView()
print "\tDirect: ", str(self._testViewDirect(view, crashMethodName))
view.close()
self._closeModelAndProxy()
self._initModelAndProxy()
view = clsView()
print "\tProxy: ", str(self._testViewProxy(view, crashMethodName))
view.close()
self._closeModelAndProxy()
def _testViewDirect(self, view, crashMethodName):
view.setModel(self._model)
view.show()
method = getattr(self._model, crashMethodName)
if method():
out = "OK"
else:
out = "NOK"
return out
def _testViewProxy(self, view, crashMethodName):
view.setModel(self._proxy)
view.show()
method = getattr(self._model, crashMethodName)
if method():
out = "OK"
else:
out = "NOK"
return out
app = QtGui.QApplication(sys.argv)
mt = myTest()
mt.testAllView()
mt.addObjectToData()
mt.testAllView()
sys.exit(app.exec_())
["Error_simple.py" (text/plain)]
from PyQt4 import QtGui
from PyQt4 import QtCore
import sys
import os
class myModel(QtCore.QAbstractItemModel):
def __init__(self, parent=None):
self._myDataStruct = None
super(myModel, self).__init__(parent)
def setDataStruct(self, myDataStruct):
self._myDataStruct = myDataStruct
def columnCount(self, parent=None):
return 1
def data(self, index, role):
if index.isValid() and role == QtCore.Qt.DisplayRole:
data = QtCore.QVariant(str(self.getMyObjectFromIndex(index)))
else:
data = QtCore.QVariant()
return data
def flags(self, index):
if not index.isValid():
flags = QtCore.Qt.ItemIsEnabled
else:
flags = QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable
return flags
def headerData(self, section, orientation, role):
return QtCore.QVariant("header")
def index(self, row, column, parent):
if (parent is None) or (not parent.isValid()):
parentNode = self._myDataStruct
else:
parentNode = self._myDataStruct.getMyObjectFromIndex(parent)
if parentNode is None:
parentNode = self._myDataStruct
childNode = parentNode[row]
if childNode is not None:
return self.createIndex(row, column, id(childNode))
else:
return QtCore.QModelIndex()
def parent(self, index):
parentIndex = None
if not index.isValid():
parentIndex = QtCore.QModelIndex()
else:
childNode = self.getMyObjectFromIndex(index)
if childNode is None:
parentIndex = QtCore.QModelIndex()
else:
parentIndex = self.getIndexFromMyObject(self._myDataStruct)
return parentIndex
def rowCount(self, parent):
if not parent.isValid():
node = self._myDataStruct
else:
node = self.getMyObjectFromIndex(parent)
return len(node)
def getIndexFromMyObject(self, myObject):
return self.createIndex(
self._myDataStruct.getIndex(myObject),
0,
id(myObject))
def getMyObjectFromIndex(self, index):
return self._myDataStruct.getData(index.internalId())
def methodFailed(self):
QtGui.QDialog().exec_()
print "first dialog ok"
self.beginRemoveRows(QtCore.QModelIndex(), 0, 0)
QtGui.QDialog().exec_()
print "second dialog ok"
self.endRemoveRows()
QtGui.QDialog().exec_()
print "third dialog ok"
class myDataStruct(object):
def __init__(self):
self._data = []
self._dico = {}
def __iter__(self):
self._data.__iter__()
def __getitem__(self, index):
return self._data[index]
def __len__(self):
return len(self._data)
def addData(self, myObjectToStore):
self._data.append(myObjectToStore)
self._dico[id(myObjectToStore)] = myObjectToStore
def getData(self, id_):
return self._dico[id_]
def getIndex(self, myObject):
return self._data.index(myObject)
class myObjectStored(object):
def __init__(self):
self._data = None
def __len__(self):
return 0
def setData(self, data):
self._data = data
def __str__(self):
return self._data
app = QtGui.QApplication(sys.argv)
Data = myDataStruct()
obj1 = myObjectStored()
obj1.setData("obj 1")
Data.addData(obj1)
model = myModel()
model.setDataStruct(Data)
proxy = QtGui.QSortFilterProxyModel()
proxy.setSourceModel(model)
#view = QtGui.QTableView() # <- Work
#view = QtGui.QListView() # <- Work
view = QtGui.QTreeView() # <- Crash
view.setModel(proxy)
view.show()
model.methodFaile()
obj2 = myObjectStored()
obj2.setData("obj 2")
Data.addData(obj2)
model.methodFaile()
sys.exit(app.exec_())
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