melib/backends: remove folder_operation

folder_operation functionalities will go to BackendFolder trait

melib/src/backends.rs

@@ -264,10 +264,9 @@ pub trait MailBackend: ::std::fmt::Debug + Send + Sync {
     fn operation(&self, hash: EnvelopeHash) -> Box<dyn BackendOp>;
 
     fn save(&self, bytes: &[u8], folder: &str, flags: Option<Flag>) -> Result<()>;
-    fn folder_operation(&mut self, _path: &str, _op: FolderOperation) -> Result<()> {
-        Ok(())
+    fn create_folder(&mut self, name: NewFolderName) -> Result<Folder> {
+        unimplemented!()
     }
-
     fn tags(&self) -> Option<Arc<RwLock<BTreeMap<u64, String>>>> {
         None
     }

melib/src/backends/imap.rs

@@ -36,7 +36,7 @@ use crate::backends::BackendOp;
 use crate::backends::FolderHash;
 use crate::backends::RefreshEvent;
 use crate::backends::RefreshEventKind::{self, *};
-use crate::backends::{BackendFolder, Folder, FolderOperation, MailBackend, RefreshEventConsumer};
+use crate::backends::{BackendFolder, Folder, MailBackend, RefreshEventConsumer};
 use crate::conf::AccountSettings;
 use crate::email::*;
 use crate::error::{MeliError, Result};
@@ -438,6 +438,7 @@ impl MailBackend for ImapType {
         Ok(())
     }
 
+    /*
     fn folder_operation(&mut self, path: &str, op: FolderOperation) -> Result<()> {
         use FolderOperation::*;
 
@@ -499,6 +500,7 @@ impl MailBackend for ImapType {
         }
         Ok(())
     }
+    */
 
     fn as_any(&self) -> &dyn::std::any::Any {
         self

melib/src/backends/jmap.rs

@@ -22,7 +22,7 @@
 use crate::async_workers::{Async, AsyncBuilder, AsyncStatus, WorkContext};
 use crate::backends::BackendOp;
 use crate::backends::FolderHash;
-use crate::backends::{BackendFolder, Folder, FolderOperation, MailBackend, RefreshEventConsumer};
+use crate::backends::{BackendFolder, Folder, MailBackend, RefreshEventConsumer};
 use crate::conf::AccountSettings;
 use crate::email::*;
 use crate::error::{MeliError, Result};
@@ -271,10 +271,6 @@ impl MailBackend for JmapType {
         Ok(())
     }
 
-    fn folder_operation(&mut self, _path: &str, _op: FolderOperation) -> Result<()> {
-        Ok(())
-    }
-
     fn as_any(&self) -> &dyn::std::any::Any {
         self
     }

ui/src/conf/accounts.rs

@@ -1003,7 +1003,7 @@ impl Account {
     }
 
     pub fn folder_operation(&mut self, path: &str, op: FolderOperation) -> Result<()> {
-        self.backend.write().unwrap().folder_operation(path, op)
+        Err(MeliError::new("Not implemented."))
     }
 
     pub fn folder_confs(&self, folder_hash: FolderHash) -> &FileFolderConf {