[evolution/gnome-2-30] Bug #374533 - Read window stays open after last email is deleted

[Milan Crha <mcrha src gnome org>]

commit 21981b4515c3a0509b8bbf852fccd7c684e8e634
Author: Milan Crha <mcrha redhat com>
Date:   Thu Apr 1 14:03:34 2010 +0200

    Bug #374533 - Read window stays open after last email is deleted

 mail/e-mail-browser.c |   23 +++++++++++++++++++++++
 mail/message-list.c   |   27 +++++++++++++++++++++++++++
 mail/message-list.h   |    1 +
 3 files changed, 51 insertions(+), 0 deletions(-)
---
diff --git a/mail/e-mail-browser.c b/mail/e-mail-browser.c
index 96f168f..26d3a87 100644
--- a/mail/e-mail-browser.c
+++ b/mail/e-mail-browser.c
@@ -267,6 +267,25 @@ mail_browser_message_selected_cb (EMailBrowser *browser,
 }
 
 static gboolean
+close_on_idle_cb (gpointer browser)
+{
+	e_mail_browser_close (browser);
+	return FALSE;
+}
+
+static void
+mail_browser_message_list_built_cb (EMailBrowser *browser, MessageList *message_list)
+{
+	g_return_if_fail (browser != NULL);
+	g_return_if_fail (E_IS_MAIL_BROWSER (browser));
+	g_return_if_fail (message_list != NULL);
+	g_return_if_fail (IS_MESSAGE_LIST (message_list));
+
+	if (!message_list_count (message_list))
+		g_idle_add (close_on_idle_cb, browser);
+}
+
+static gboolean
 mail_browser_popup_event_cb (EMailBrowser *browser,
                              GdkEventButton *event,
                              const gchar *uri)
@@ -487,6 +506,10 @@ mail_browser_constructed (GObject *object)
 		G_CALLBACK (mail_browser_message_selected_cb), object);
 
 	g_signal_connect_swapped (
+		priv->message_list, "message-list-built",
+		G_CALLBACK (mail_browser_message_list_built_cb), object);
+
+	g_signal_connect_swapped (
 		web_view, "popup-event",
 		G_CALLBACK (mail_browser_popup_event_cb), object);
 
diff --git a/mail/message-list.c b/mail/message-list.c
index 6526950..25116ba 100644
--- a/mail/message-list.c
+++ b/mail/message-list.c
@@ -3873,6 +3873,33 @@ message_list_set_selected(MessageList *ml, GPtrArray *uids)
 	g_ptr_array_free(paths, TRUE);
 }
 
+struct ml_count_data {
+	MessageList *ml;
+	guint count;
+};
+
+static void
+ml_getcount_cb (ETreePath path, gpointer user_data)
+{
+	struct ml_count_data *data = user_data;
+
+	if (!e_tree_model_node_is_root (data->ml->model, path))
+		data->count++;
+}
+
+guint
+message_list_count (MessageList *message_list)
+{
+	struct ml_count_data data = { message_list, 0 };
+
+	g_return_val_if_fail (message_list != NULL, 0);
+	g_return_val_if_fail (IS_MESSAGE_LIST (message_list), 0);
+
+	e_tree_path_foreach (E_TREE (message_list), ml_getcount_cb, &data);
+
+	return data.count;
+}
+
 void
 message_list_freeze(MessageList *ml)
 {
diff --git a/mail/message-list.h b/mail/message-list.h
index c7efc5d..4b7e4da 100644
--- a/mail/message-list.h
+++ b/mail/message-list.h
@@ -218,6 +218,7 @@ void		message_list_copy		(MessageList *message_list,
 						 gboolean cut);
 void		message_list_paste		(MessageList *message_list);
 guint		message_list_length		(MessageList *message_list);
+guint		message_list_count		(MessageList *message_list);
 guint		message_list_hidden		(MessageList *message_list);
 void		message_list_hide_add		(MessageList *message_list,
 						 const gchar *expr,