On 17-02-11 21:08, Adam Tauno Williams wrote:
I'm confused trying to make a filtered& sorted treeview. Filtering
works... data is correctly displayed. But sorting does not work.
self.todo_model = gtk.ListStore(gobject.TYPE_PYOBJECT)
# Create a TreeModelFilter to control row visibility
self.todo_filter = self.todo_model.filter_new()
self.todo_filter.set_visible_func(self.todo_visible_filter)
# Create a TreeModelSort to wrap the TreeModelFilter
self.todo_sort = gtk.TreeModelSort(self.todo_filter)
# Set a sort function
self.todo_sort.set_default_sort_func(TaskList.sort, None)
# Set the model in the view to the TreeModelSort
self.todo_task_view.set_model(self.todo_sort)
TaskList.sort ---
@staticmethod
def sort(model, iter1, iter2, user_data):
print 'SORT', model, iter1, iter2
sort_by = model.get_sort_column_id()
This fails because model is a TreeModelFilter... which does not have a
method get_sort_column_id.... why isn't this the TreeModelSort object?
NOTE: Using a sorted filter can be very confusing in the beginning. I
recently implemented this in my app too.
As far as I know, it is the lowest model, the liststore. Your setup
looks good, it is the sort function that is not good. The docs [1] say
that the function should return -1, 0 or 1. Here is the method I use:
def _sort_func(self, model, iter1, iter2):
data1 = model.get_value(iter1, 3)
data2 = model.get_value(iter2, 3)
if data1 == data2:
data1 = model.get_value(iter1, 2)
data2 = model.get_value(iter2, 2)
return cmp(data1, data2)
This will sort column 2 if the values in column 3 are equal. The key
part here is the built-in cmp() function that will return -1, 0 or 1,
which is what we need.
Cheers,
Timo
[1]
http://library.gnome.org/devel/pygtk/stable/class-gtktreesortable.html#method-gtktreesortable--set-sort-func
[that is the model directly owned by the view.
Does anyone have a working example of a filtered sortable list?
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