EMFolderTree: Store an EMailBackend instead of an EMailSession.

All this so EMFolderTree can submit EActivity instances for async ops.
You can obtain an EMailSession from an EMailBackend, but not vice versa.

Creates lots of pretty ripples in the mail code, but ultimately reduces
complexity.  So it's a code cleanup of sorts.

1 files changed, 6 insertions, 3 deletions

diff --git a/mail/em-composer-utils.c b/mail/em-composer-utils.c
index bc836a890d..f58e8955dd 100644
--- a/mail/em-composer-utils.c
+++ b/mail/em-composer-utils.c
@@ -2787,15 +2787,18 @@ static void
 post_header_clicked_cb (EComposerPostHeader *header,
                         EMsgComposer *composer)
 {
+	EShell *shell;
+	EShellBackend *shell_backend;
 	GtkTreeSelection *selection;
-	CamelSession *session;
 	GtkWidget *folder_tree;
 	GtkWidget *dialog;
 	GList *list;
 
-	session = e_msg_composer_get_session (composer);
+	/* FIXME Figure out a way to pass the mail backend in. */
+	shell = e_msg_composer_get_shell (composer);
+	shell_backend = e_shell_get_backend_by_name (shell, "mail");
 
-	folder_tree = em_folder_tree_new (E_MAIL_SESSION (session));
+	folder_tree = em_folder_tree_new (E_MAIL_BACKEND (shell_backend));
 	emu_restore_folder_tree_state (EM_FOLDER_TREE (folder_tree));
 
 	selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (folder_tree));