Re: Autoupdating EntryCompletion (was Selectively trapping keypresses)

Jeffrey Ratcliffe wrote:
On 16/04/07, muppet <scott asofyet org> wrote:
Everything's good right up until the end.  ;-)

I've added a couple of callbacks to get new entries into the ListModel
to which the EntryCompletion is bound. Selecting entries several times
from the EntryCompletion is giving me:

Gtk-CRITICAL **: gtk_list_store_get_value: assertion `VALID_ITER
(iter, list_store)' failed at ./ line 105.
GLib-GObject-CRITICAL **: g_object_set_property: assertion `G_IS_VALUE
(value)' failed at ./ line 105.

I've attached the code.

I couldn't reproduce that after tinkering for just a few moments, but i think
i see it in the code...

What am I doing wrong?

Any change to a TreeModel invalidates existing TreeIters.

$cmp_model -> signal_connect('row-inserted' => sub {
  my ($model, $path, $iter) = @_;
  my ($val) = $cmp_model->get($iter, 0);
warn "inserted $val\n";

# Weed out duplicates
  my $iter2 = $cmp_model->iter_next($iter);
 while ($iter2) {
  my ($val2) = $cmp_model->get($iter2, 0);
warn "list $val2\n";
  if ($val eq $val2) {
warn "removing $val2\n";
   $cmp_model->remove ($iter2);
warn "removed $val2\n";
  else {
   $iter = $iter2;
  $iter2 = $cmp_model->iter_next($iter);

$iter has potential to be invalid here, as the model may have been changed by
the preceding statements.


Try using a TreePath to point to the current row while modifying the model, or
at the very least restarting the iteration after modifications.

muppet <scott at asofyet dot org>

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