Convert composer autosave to an EExtension.

Given the way the autosave feature was awkwardly bolted on to the
composer, an EExtension seemed like a natural fit.  And it helped
clean up some object lifecycle hacks (and bugs).

What we have now is a new module consisting of two EExtensions:

   EComposerAutosave extends EMsgComposer and determines when to
   kick off an asynchronous autosave operation.

   EComposerRegistry extends EShell and offers to restore orphaned
   autosave files on startup (which is also asynchronous now).

e-autosave-utils.c holds the actual asynchronous functions and a few
other miscellaneous utility functions.

Source code for the new module lives in /modules/composer-autosave.

1 files changed, 0 insertions, 8 deletions

diff --git a/modules/mail/e-mail-shell-backend.c b/modules/mail/e-mail-shell-backend.c
index 870437aeb6..f1696692dd 100644
--- a/modules/mail/e-mail-shell-backend.c
+++ b/modules/mail/e-mail-shell-backend.c
@@ -375,7 +375,6 @@ mail_shell_backend_window_created_cb (EShell *shell,
                                       GtkWindow *window,
                                       EShellBackend *shell_backend)
 {
-	static gboolean first_time = TRUE;
 	const gchar *backend_name;
 
 	/* This applies to both the composer and signature editor. */
@@ -425,13 +424,6 @@ mail_shell_backend_window_created_cb (EShell *shell,
 	g_object_weak_ref (
 		G_OBJECT (window), (GWeakNotify)
 		mail_shell_backend_window_weak_notify_cb, shell);
-
-	if (first_time) {
-		g_signal_connect_swapped (
-			window, "map-event",
-			G_CALLBACK (e_msg_composer_check_autosave), shell);
-		first_time = FALSE;
-	}
 }
 
 static void