[evolution] Bug #721427 - Alert about missing condition in a filter rule editor

[Milan Crha <mcrha src gnome org>]

commit bc084f0bff62254acb5f06cbbacb87ba01795552
Author: Milan Crha <mcrha redhat com>
Date:   Tue Jan 21 19:15:55 2014 +0100

    Bug #721427 - Alert about missing condition in a filter rule editor

 e-util/e-filter-rule.c  |    3 +++
 e-util/filter.error.xml |    5 +++++
 2 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/e-util/e-filter-rule.c b/e-util/e-filter-rule.c
index aabd0a6..33b626f 100644
--- a/e-util/e-filter-rule.c
+++ b/e-util/e-filter-rule.c
@@ -400,6 +400,9 @@ filter_rule_validate (EFilterRule *rule,
                parts = parts->next;
        }
 
+       if (!valid && !parts && alert)
+               *alert = e_alert_new ("filter:no-condition", NULL);
+
        return valid;
 }
 
diff --git a/e-util/filter.error.xml b/e-util/filter.error.xml
index 62b7519..0b35f05 100644
--- a/e-util/filter.error.xml
+++ b/e-util/filter.error.xml
@@ -31,4 +31,9 @@
   <_secondary>Please choose another name.</_secondary>
  </error>
 
+ <error id="no-condition" type="error">
+  <_primary>Missing condition.</_primary>
+  <_secondary>Filter should have at least one condition.</_secondary>
+ </error>
+
 </error-list>