Hi,
Here's the problem:
1. Set up a QFileSystemModel, call setRootPath() and hook up to the
dataChanged signal.
2. Open a new file from Python and write some text into it. Then close it.
3. Reopen the file in append mode and write some more text into it.
Then close it.
4. Open a file in an external editor. Write some stuff. Save. Write
more stuff. Save.
If you do (3), the dataChanged signal is NOT emitted. However, if you do
(4), the dataChanged signal IS emitted.
Any clues? An attached file that reproduces the issue is attached.
Best regards,
Mads
--
+-+
| Mads Ipsen |
+--+--+
| Gåsebæksvej 7, 4. tv | |
| DK-2500 Valby| phone: +45-29716388 |
| Denmark | email: mads.ip...@gmail.com |
+--+--+
import sys
import os
from PyQt4 import QtGui, QtCore
class Widget(QtGui.QWidget):
def __init__(self, parent=None):
QtGui.QWidget.__init__(self, parent)
layout = QtGui.QVBoxLayout()
self.setLayout(layout)
self._view = QtGui.QListView()
layout.addWidget(self._view)
# Add the model
self._model = QtGui.QFileSystemModel()
self._model.setRootPath(QtCore.QDir().rootPath())
self._model.setReadOnly(False)
self._model.setFilter(QtCore.QDir.AllDirs | QtCore.QDir.AllEntries)
self._view.setModel(self._model)
# Root path
path = os.path.dirname(os.path.abspath(__file__))
self._model.setRootPath(path)
# Set a root index
index = self._model.index(path)
self._view.setRootIndex(index)
# Generate a file with some text
print 'Making file'
f = open('foo.dat', 'w')
f.write('Some stuff\n')
f.close()
self.connect(self._model, QtCore.SIGNAL('dataChanged(const QModelIndex &, const QModelIndex &)'), self.dataChanged)
# Append more text - this should trigger a signal call
print 'Modifying file'
f = open('foo.dat', 'w+')
f.write('Some more stuff\n')
f.close()
def dataChanged(self, index_0, index_1):
print 'dataChanged', self._model.filePath(index_0), self._model.filePath(index_1)
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
widget = Widget()
widget.show()
sys.exit(app.exec_())
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