I have an underlying model for a TreeView in my application that I am
filtering based on certain user selections. I maintain a global reference
to the "base" TreeModel (which is sometimes attached to the TreeView used to
display the information.) The mechanism I am using goes something like
this:
1. User selects a new filter criteria
2. (Depending on the selection) Either a) gtk_tree_model_filter_new to
create a new filter based on the user's criteria from the global "base"
model or b) use the base model.
3. gtk_tree_view_set_model( [selected model])
I was thinking this is probably leaving a bunch of filtered tree models
around that aren't doing anything but taking up space...do I need to be
g_object_unref'ing the old filter models? I attempted a "replace" function
that looks something like:
void replaceTreeModel(GtkTreeModel *model)
{
GtkTreeView *treeview = [get the widget];
GtkTreeModel *currentModel = gtk_tree_view_get_model(treeview);
gtk_tree_view_set_model( treeview, model );
// The following makes the application unstable and crash in the filter
function so I've commented it out for now
//if (GTK_IS_TREE_MODEL_FILTER( currentModel))
//{
// g_object_unref( G_OBJECT(currentModel));
//}
}
What is the best/proven way of doing something like this?
Thanks,
Matt
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