class DomModel(QtCore.QAbstractItemModel):
def __init__(self, document, parent = None):
QtCore.QAbstractItemModel.__init_ _(self, parent)
self.domDocument = document ##this is a QDomDocument object
self.rootItem = DomItem(self.domDocument, 0)
## some useful methods
def columnCount(self, parent):
def data(self, index, role):
def headerData(self, section, orientation, role):
def index(self, row, column, parent):
def parent(self, child):
def rowCount(self, parent):
def findNodeByTagNameID(self,tagName,id):
def validateDom(self,nodo):
def removeRows(self,arow,count,parent):
self.beginRemoveRows(parent,arow,arow+count-1)
for ii in range(count):
##code for removing a row from QDomDocument here
self.endRemoveRows()
return True
This is my model class. When i remove a row the qtreeview repaint the tree but the row deleted isn't the one i've selected.
example:
the treeview show:
document
element1
element2
element3
pick elements2 for removing.
treeview update after removing but show:
document
element1
element2
Now, if i do:
print qtreeview.model().domDocument.toString()
the result is:
document
element1
element3
so, the model is changed right. the removed element is the one that i picked.
Any idea?
p.s. apologise for my english...hope it's understandable
2006/9/8, Andreas Pakulat <
[EMAIL PROTECTED]>:
On 08.09.06 10:38:51, Oscar Cossu wrote:
> thank you for the advice, I have read the doc again (and again and again).
> Now, I use a QTreeView ,what i have to do ?
>
> QTreeView::rowsAboutToBeRemoved(param)
>
> treeviewobj.model ().removeRow(param)
>
> QTreeView::rowsRemoved(param)
No.
> or just call removeRow() that call itself beginRemoveRow and endRemoveRow ?
Well, you said you have your own model, don't you? In there you've got
your removeRows() function. If that one is implemented by doing
something like
beginRemoveRows(parent(), beginRow, endRow);
<code that deletes the stuff from the underlying data, i.e. the xml tree>
endRemoveRows();
Then you're done. You can now use the model's removeRows() function to
remove rows. The same works for columns.
If it still doesn't work for you, please consider posting the important
parts of your model. (i.e. leave out the data, index, parent, *count
functions).
Andreas
> 2006/9/7, Andreas Pakulat <[EMAIL PROTECTED]>:
> >
> >On 07.09.06 16:44:23, Oscar Cossu wrote:
> >> Hy all, I set the model of a QTreeView with an object that is a
> >subclass of
> >> QAbstractItemModel.
> >> When I change the model (ex. deleting a row) and emit layoutChanged()
> >> signal, the treeModel should update the view, but errors occur.
> >
> >Read the Qt documentation on model/view again. You shouldn't use
> >layoutChanged() but call QAbstractItemModel::beginRemoveRows() and
> >::endRemoveRows (the same for inserting rows).
> >
> >Andreas
> >
> >--
> >Accent on helpful side of your nature. Drain the moat.
> >
> >_______________________________________________
> >PyKDE mailing list [email protected]
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> >
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Keep it short for pithy sake.
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