Tonight I tried to play with QT's QModel concept. It had stumped me
for quite sometime at work today. I couldn't rest untill I had
understood the basics. I'm not sure if this will be usefull to the
hoi polloi but some may find it useful.
Anyways, heres a listView using a QDirModel for reference.
Oh, and for those that are python/Qt gurus please comment if I'm doing
this the wrong way.
-Cheers
Dave
## ----------------------------------------------
from PyQt4 import QtCore, QtGui
import sys
import os
class UI(QtGui.QWidget):
def __init__(self, parent=None):
QtGui.QWidget.__init__(self, parent)
self.setWindowTitle('listView ModelView Example')
self.listView = MyListView()
self.upButton = QtGui.QPushButton()
self.upButton.setText("Up")
grid = QtGui.QGridLayout()
grid.addWidget(self.upButton)
grid.addWidget(self.listView)
self.setLayout(grid)
self.resize(300, 150)
items = self.listView.getModelItemCollection()
print self.listView.DirModel.getData(items)
self.connect(self.upButton, QtCore.SIGNAL("clicked()"),
self._GoUp)
def _GoUp(self):
path = self.listView.DirModel.filePath(self.listView.rootIndex
())
self.listView.setRootIndex(self.listView.DirModel.index
( os.path.dirname(str(path))))
@staticmethod
def Display():
app = QtGui.QApplication(sys.argv)
win = UI()
win.show()
sys.exit(app.exec_())
class MyDirModel(QtGui.QDirModel):
'''
SubClass of QtGui.QDirmodel
'''
def __init__(self):
super(MyDirModel, self).__init__()
def getData(self, ModelIndex):
'''
Using QModelIndex I can get data via the data() method or
via any other method that suport a QModelIndex
'''
paths = []
if isinstance(ModelIndex, list):
for items in ModelIndex:
#print self.data(items).toString()
paths.append(self.filePath(items))
return paths
else:
raise ValueError("getData() requires a list
(QtGui.QModelIndexs)")
class MyListView(QtGui.QListView):
'''
SubClass of QtGui.QListView
'''
def __init__(self, parent = None):
super(MyListView, self).__init__(parent)
self.DirModel = MyDirModel()
self.setModel(self.DirModel) # we have to set the listView to
use this DirModel
self.setRootIndex(self.DirModel.index("c://")) # set the
deafault to load to c:\
self.connect(self, QtCore.SIGNAL("doubleClicked
(QModelIndex)"), self._DoubleClicked)
def getModelItemCollection(self):
'''
From this list get the QModelIndex that we set
with .setRootIndex
Using QModelIndex and DirModel we can get all the elements at
that Index
'''
ModelIndex = self.rootIndex()
ModelIndexCollection = []
for i in range(0, self.DirModel.rowCount(ModelIndex)):
ModelIndexCollection.append(ModelIndex.child(i,0))
return ModelIndexCollection
def _DoubleClicked(self):
if self.DirModel.isDir(self.currentIndex()):
path = self.DirModel.filePath(self.currentIndex())
self.setRootIndex(self.DirModel.index(path))
items = self.getModelItemCollection()
print self.DirModel.getData(items)
if __name__ == "__main__":
UI.Display()
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http://groups.google.com/group/python_inside_maya
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