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Fix a cleanup issue in dlgparam_destroy.

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If a dialog box is destroyed by the program before the user has
pressed one of the result-delivering buttons - e.g. because the parent
window closes so the dialog is no longer relevant to anything anyway -
then dlgparam_destroy would never call the client code's provided
callback. That makes sense in terms of the callback wanting to _take
action_ based on the result of the dialog box, but it ignores the
possibility that the callback may simply need to free its own context
structure.

So now dlgparam_destroy always calls the client's callback, even if
the result it passes is negative (meaning 'the user never got round to
pressing any of the dialog-ending buttons'), and all the existing
client callbacks handle the negative-result case by doing nothing
except freeing any allocated memory they might have.
This commit is contained in:
Simon Tatham
2017-11-26 14:37:38 +00:00
parent 46ba9de2c2
commit 946405341f
4 changed files with 12 additions and 6 deletions
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4
unix/gtkapp.c
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@ -192,9 +192,9 @@ static void post_initial_config_box(void *vctx, int result)
{
Conf *conf = (Conf *)vctx;
if (result) {
if (result > 0) {
new_session_window(conf, NULL);
} else {
} else if (result == 0) {
conf_free(conf);
g_application_release(G_APPLICATION(app));
}