Bug #670445 - Folder deletion in offline shows strange behavior

Providing a check for online backend before proceeding for the operation.

mail/e-mail-reader-utils.c

@@ -195,6 +195,7 @@ e_mail_reader_delete_folder (EMailReader *reader,
 {
 	EMailBackend *backend;
 	EMailSession *session;
+	EShell *shell;
 	EAlertSink *alert_sink;
 	CamelStore *parent_store;
 	MailFolderCache *folder_cache;
@@ -231,6 +232,17 @@ e_mail_reader_delete_folder (EMailReader *reader,
 		return;
 	}
 
+	shell = e_shell_backend_get_shell (E_SHELL_BACKEND (backend));
+
+	if(!store_is_local && !e_shell_get_online (shell))
+	{
+		e_alert_submit (
+			alert_sink, "mail:online-operation",
+			display_name, NULL);
+		return;
+	}
+
+
 	have_flags = mail_folder_cache_get_folder_info_flags (
 		folder_cache, folder, &flags);
 

mail/mail.error.xml

@@ -525,5 +525,10 @@ An mbox account will be created to preserve the old mbox folders. You can delete
     <_secondary>The printer replied &quot;{0}&quot;.</_secondary>
   </error>
 
+  <error id="online-operation" type="error">
+    <_primary>Could not perform this operation on {0}.</_primary>
+    <_secondary xml:space="preserve">You must be working online to complete this operation.</_secondary>
+  </error>
+
 </error-list>