Add MailFolderCache::folder-changed signal

Yes, this signal is kind of an ugly monster.  I'm not sure how to improve this
significantly.  But this commit removes the last EMFolderTreeModel and EShell
dependencies from MailFolderCache, which is a big step towards splitting off
the backend.

https://bugzilla.gnome.org/show_bug.cgi?id=604627

1 files changed, 55 insertions, 0 deletions

diff --git a/modules/mail/e-mail-shell-backend.c b/modules/mail/e-mail-shell-backend.c
index be6bd1d199..47e00b7591 100644
--- a/modules/mail/e-mail-shell-backend.c
+++ b/modules/mail/e-mail-shell-backend.c
@@ -50,6 +50,7 @@
 #include "em-account-prefs.h"
 #include "em-composer-prefs.h"
 #include "em-composer-utils.h"
+#include "em-event.h"
 #include "em-folder-utils.h"
 #include "em-format-hook.h"
 #include "em-format-html-display.h"
@@ -782,6 +783,56 @@ folder_renamed_cb (MailFolderCache *cache, CamelStore *store, const gchar *oldur
 }
 
 static void
+folder_changed_cb (MailFolderCache *cache,
+		   CamelStore *store,
+		   const gchar *folder_uri,
+		   const gchar *folder_fullname,
+		   int new_messages,
+		   const gchar *msg_uid,
+		   const gchar *msg_sender,
+		   const gchar *msg_subject,
+		   gpointer user_data)
+{
+	EShell *shell = (EShell*) user_data;
+	CamelFolder *folder = NULL;
+	gint flags = 0;
+	EMEvent *e = em_event_peek();
+	EMEventTargetFolder *t;
+	EMFolderTreeModel *model;
+
+	g_return_if_fail (shell);
+
+	if (!mail_folder_cache_get_folder_from_uri (cache, folder_uri, &folder)) {
+		if (!mail_folder_cache_get_folder_info_flags (cache, folder, &flags)) {
+			g_return_if_reached ();
+		}
+	}
+
+	t = em_event_target_new_folder(e, folder_uri, new_messages, msg_uid,
+				       msg_sender, msg_subject);
+
+	t->is_inbox = ((flags & CAMEL_FOLDER_TYPE_MASK) == CAMEL_FOLDER_TYPE_INBOX);
+
+	model = em_folder_tree_model_get_default ();
+	t->name = em_folder_tree_model_get_folder_name (model, store,
+							folder_fullname);
+
+	if (t->new > 0)
+		e_shell_event (
+			       shell, "mail-icon",
+			       (gpointer) "mail-unread");
+
+	/** @Event: folder.changed
+	 * @Title: Folder changed
+	 * @Target: EMEventTargetFolder
+	 *
+	 * folder.changed is emitted whenever a folder changes.  There is no detail on how the folder has changed.
+	 * UPDATE: We tell the number of new UIDs added rather than the new mails received
+	 */
+	e_event_emit((EEvent *)e, "folder.changed", (EEventTarget *)t);
+}
+
+static void
 mail_shell_backend_constructed (GObject *object)
 {
 	EMailShellBackendPrivate *priv;
@@ -855,6 +906,10 @@ mail_shell_backend_constructed (GObject *object)
 		mail_folder_cache_get_default (), "folder-renamed",
 		G_CALLBACK (folder_renamed_cb), NULL);
 
+	g_signal_connect (
+		mail_folder_cache_get_default (), "folder-changed",
+		G_CALLBACK (folder_changed_cb), shell);
+
 	mail_config_init ();
 	mail_msg_init ();