Segmentation fault while switching QCompleter for QLineEdit [on hold]
- by san
I have a QLineEdit that uses autocompletion one which on focusIn event in which it shows paths from XML List(here I have used hardcoded list) but if user doesn't find the path from that list popped by QCompleter than I want user to be able to browse to path typing '/' in QLineEdit , I am not able to select the paths say /Users etc and on trying to type Segmentation fault occurs.
from PyQt4.Qt import Qt, QObject,QLineEdit
from PyQt4.QtCore import pyqtSlot,SIGNAL,SLOT
from PyQt4 import QtGui, QtCore
import sys
class DirLineEdit(QLineEdit, QtCore.QObject):
"""docstring for DirLineEdit"""
def __init__(self):
super(DirLineEdit, self).__init__()
self.defaultList = ['~/Development/python/searchMethod', '~/Development/Nuke_python', '~/Development/python/openexr', '~/Development/python/cpp2python']
self.textChanged.connect(self.__dirCompleter)
def focusInEvent(self, event):
if len(self.text()) == 0:
self._pathsList()
QtGui.QLineEdit.focusInEvent(self, event)
self.completer().complete()
def __dirCompleter(self):
if len(self.text()) == 0:
model = MyListModel(self.defaultList, self)
completer = QtGui.QCompleter(model, self)
completer.setModel(model)
else:
dirModel = QtGui.QFileSystemModel()
dirModel.setRootPath(QtCore.QDir.currentPath())
dirModel.setFilter(QtCore.QDir.AllDirs | QtCore.QDir.NoDotAndDotDot | QtCore.QDir.Files)
dirModel.setNameFilterDisables(0)
completer = QtGui.QCompleter(dirModel, self)
completer.setCaseSensitivity(QtCore.Qt.CaseInsensitive)
completer.setModel(dirModel)
self.setCompleter(completer)
def _pathsList(self):
completerList = QtCore.QStringList()
for i in self.defaultList:
completerList.append(QtCore.QString(i))
lineEditCompleter = QtGui.QCompleter(completerList)
lineEditCompleter.setCompletionMode(QtGui.QCompleter.UnfilteredPopupCompletion)
self.setCompleter(lineEditCompleter)
class MyListModel(QtCore.QAbstractListModel):
def __init__(self, datain, parent=None, *args):
""" datain: a list where each item is a row
"""
QtCore.QAbstractTableModel.__init__(self, parent, *args)
self.listdata = datain
def rowCount(self, parent=QtCore.QModelIndex()):
return len(self.listdata)
def data(self, index, role):
if index.isValid() and role == QtCore.Qt.DisplayRole:
return QtCore.QVariant(self.listdata[index.row()])
else:
return QtCore.QVariant()
app = QtGui.QApplication(sys.argv)
smObj = DirLineEdit()
smObj.show()
app.exec_()
Please help fix this or suggest better way of implementation?
