[evolution-patches] A patch for accessibility

[Kidd Wang <kidd wang sun com>]

Hi,

This patch is aimed for trunk. We have found a bug which can be 
reproduced as follows when accessibility is enabled:
1. Start Gnopernicus and Evolution.
2. Go to calendar component.
3. Select work week view, and create several events.
4. Select month view.

Actural Result:
Evolution is easy to crash when swithing between different views.

Enclosed is a patch to fix the problem. Would you like to spend a little 
time to review it?

Best regards

Index: a11y/ChangeLog
===================================================================
RCS file: /cvs/gnome/evolution/a11y/ChangeLog,v
retrieving revision 1.17
diff -u -r1.17 ChangeLog
--- a11y/ChangeLog	15 Mar 2004 20:16:37 -0000	1.17
+++ a11y/ChangeLog	22 Apr 2004 09:30:56 -0000
@@ -1,3 +1,8 @@
+2004-04-22  Kidd Wang  <kidd wang sun com>
+
+	* calendar/ea-week-view.c: (ea_week_view_get_n_children): If the
+	week view has no spans, there is no visible events in the view.
+
 2004-03-15  JP Rosevear  <jpr ximian com>
 
 	* calendar/ea-cal-view.h: fix include
Index: a11y/calendar/ea-week-view.c
===================================================================
RCS file: /cvs/gnome/evolution/a11y/calendar/ea-week-view.c,v
retrieving revision 1.6
diff -u -r1.6 ea-week-view.c
--- a11y/calendar/ea-week-view.c	9 Dec 2003 07:09:24 -0000	1.6
+++ a11y/calendar/ea-week-view.c	22 Apr 2004 09:30:57 -0000
@@ -206,6 +206,10 @@
 		EWeekViewEvent *event;
 		EWeekViewEventSpan *span;
 
+                /* If week_view->spans == NULL, there is no visible events. */
+                if (!week_view->spans)
+                        break;
+
 		event = &g_array_index (week_view->events,
 					EWeekViewEvent, event_index);
 		if (!event)