static GObjectClass *parent_class = NULL;
-static void
-psppire_dialog_finalize (GObject *object)
-{
- PsppireDialog *dialog ;
-
- g_return_if_fail (object != NULL);
- g_return_if_fail (PSPPIRE_IS_DIALOG (object));
-
- dialog = PSPPIRE_DIALOG (object);
-
- if (G_OBJECT_CLASS (parent_class)->finalize)
- G_OBJECT_CLASS (parent_class)->finalize (object);
-}
-
-
-
/* Properties */
enum
{
G_TYPE_STRING);
- object_class->finalize = psppire_dialog_finalize;
-
parent_class = g_type_class_peek_parent (class);
}
dialog->box = NULL;
dialog->contents_are_valid = NULL;
dialog->validity_data = NULL;
+ dialog->contents_are_acceptable = NULL;
+ dialog->acceptable_data = NULL;
dialog->slidable = FALSE;
g_value_init (&value, orientation_spec->value_type);
}
+/* Sets a predicate function that is checked after each change that the user
+ makes to the dialog's state. If the predicate function returns false, then
+ "OK" and other buttons that accept the dialog's settings will be
+ disabled. */
void
psppire_dialog_set_valid_predicate (PsppireDialog *dialog,
ContentsAreValid contents_are_valid,
dialog->validity_data = data;
}
+/* Sets a predicate function that is called after "OK" or another button that
+ accepts the dialog's settings is pushed. If the predicate function returns
+ false, then the button push is ignored. (If the predicate function returns
+ false, then it should take some action to notify the user why the contents
+ are unacceptable, e.g. pop up a dialog box.)
+
+ An accept predicate is preferred over a validity predicate when the reason
+ why the dialog settings are unacceptable may not be obvious to the user, so
+ that the user needs a helpful message to explain. */
+void
+psppire_dialog_set_accept_predicate (PsppireDialog *dialog,
+ ContentsAreValid contents_are_acceptable,
+ gpointer data)
+{
+ dialog->contents_are_acceptable = contents_are_acceptable;
+ dialog->acceptable_data = data;
+}
+
+gboolean
+psppire_dialog_is_acceptable (const PsppireDialog *dialog)
+{
+ return (dialog->contents_are_acceptable == NULL
+ || dialog->contents_are_acceptable (dialog->acceptable_data));
+}