[evolution] Bug #404227 - Over-aggressive appointment editor date check

[Milan Crha <mcrha src gnome org>]

commit 79242432b23fe7def50b7119e61d8570a3558c1c
Author: Milan Crha <mcrha redhat com>
Date:   Thu Oct 15 20:15:31 2009 +0200

    Bug #404227 - Over-aggressive appointment editor date check

 calendar/gui/dialogs/event-page.c |   27 +++++++++++++++++++++++++--
 widgets/misc/e-dateedit.c         |   14 +++++++++++++-
 2 files changed, 38 insertions(+), 3 deletions(-)
---
diff --git a/calendar/gui/dialogs/event-page.c b/calendar/gui/dialogs/event-page.c
index 83f783a..35a4719 100644
--- a/calendar/gui/dialogs/event-page.c
+++ b/calendar/gui/dialogs/event-page.c
@@ -2415,6 +2415,22 @@ times_updated (EventPage *epage, gboolean adjust_end_time)
 	notify_dates_changed (epage, &start_tt, &end_tt);
 }
 
+static gboolean
+safe_to_process_date_changed_signal (GtkWidget *dedit_widget)
+{
+	EDateEdit *dedit;
+	GtkWidget *entry;
+
+	g_return_val_if_fail (dedit_widget != NULL, FALSE);
+
+	dedit = E_DATE_EDIT (dedit_widget);
+	g_return_val_if_fail (dedit != NULL, FALSE);
+
+	entry = e_date_edit_get_entry (dedit);
+
+	return !entry || !GTK_WIDGET_HAS_FOCUS (entry);
+}
+
 /* Callback used when the start date widget change.  We check that the
  * start date < end date and we set the "all day event" button as appropriate.
  */
@@ -2422,6 +2438,9 @@ static void
 start_date_changed_cb (GtkWidget *dedit,
                        EventPage *epage)
 {
+	if (!safe_to_process_date_changed_signal (dedit))
+		return;
+
 	hour_minute_changed (epage);
 	times_updated (epage, TRUE);
 }
@@ -2433,6 +2452,10 @@ static void
 end_date_changed_cb (GtkWidget *dedit,
                      EventPage *epage)
 {
+	if (!safe_to_process_date_changed_signal (dedit)) {
+		return;
+	}
+
 	times_updated (epage, FALSE);
 }
 
@@ -2771,9 +2794,9 @@ init_widgets (EventPage *epage)
 	e_buffer_tagger_connect (GTK_TEXT_VIEW (priv->description));
 
 	/* Start and end times */
-	g_signal_connect((priv->start_time), "changed",
+	g_signal_connect (priv->start_time, "changed",
 			    G_CALLBACK (start_date_changed_cb), epage);
-	g_signal_connect((priv->end_time), "changed",
+	g_signal_connect (priv->end_time, "changed",
 			    G_CALLBACK (end_date_changed_cb), epage);
 
 	/* Categories */
diff --git a/widgets/misc/e-dateedit.c b/widgets/misc/e-dateedit.c
index 07a9fc6..2b0eb8a 100644
--- a/widgets/misc/e-dateedit.c
+++ b/widgets/misc/e-dateedit.c
@@ -109,6 +109,9 @@ struct _EDateEditPrivate {
 	GDestroyNotify time_callback_destroy;
 
 	gboolean twodigit_year_can_future;
+
+	/* set to TRUE when the date has been changed by typing to the entry */
+	gboolean has_been_changed;
 };
 
 enum {
@@ -356,6 +359,7 @@ date_edit_init (EDateEdit *dedit)
 	dedit->priv->time_callback_destroy = NULL;
 
 	dedit->priv->twodigit_year_can_future = TRUE;
+	dedit->priv->has_been_changed = FALSE;
 
 	create_children (dedit);
 
@@ -1681,6 +1685,12 @@ on_date_entry_focus_out			(GtkEntry	*entry,
 		return FALSE;
 	} else if (e_date_edit_get_date (dedit,&tmp_tm.tm_year,&tmp_tm.tm_mon,&tmp_tm.tm_mday)) {
 		e_date_edit_set_date (dedit,tmp_tm.tm_year,tmp_tm.tm_mon,tmp_tm.tm_mday);
+
+		if (dedit->priv->has_been_changed) {
+			/* the previous one didn't emit changed signal, but we want it even here, thus doing itself */
+			g_signal_emit (dedit, signals [CHANGED], 0);
+			dedit->priv->has_been_changed = FALSE;
+		}
 	} else {
 		dedit->priv->date_set_to_none = TRUE;
 		e_date_edit_update_date_entry (dedit);
@@ -1951,8 +1961,10 @@ e_date_edit_check_date_changed		(EDateEdit	*dedit)
 						      tmp_tm.tm_mon,
 						      tmp_tm.tm_mday);
 
-	if (date_changed)
+	if (date_changed) {
+		priv->has_been_changed = TRUE;
 		g_signal_emit (dedit, signals[CHANGED], 0);
+	}
 }
 
 /* Parses the time, and if it is different from the current settings it