FolderLookupService.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef COMM_MAILNEWS_BASE_SRC_FOLDERLOOKUPSERVICE_H_

#define COMM_MAILNEWS_BASE_SRC_FOLDERLOOKUPSERVICE_H_

#include "nsIFolderLookupService.h"

#include "nsIMsgFolder.h"

#include "nsIWeakReferenceUtils.h"

#include "nsTHashMap.h"

class FolderLookupService final : public nsIFolderLookupService {

 public:

  NS_DECL_THREADSAFE_ISUPPORTS

  NS_DECL_NSIFOLDERLOOKUPSERVICE

  FolderLookupService() = default;

  FolderLookupService(const FolderLookupService&) = delete;

  FolderLookupService& operator=(const FolderLookupService&) = delete;

 protected:

  virtual ~FolderLookupService() = default;

 private:

/**

   * Internal helper to find a folder (which may or may not be dangling).

   * Will return `nullptr` if the folder does not exist, and will only

   * fail on invalid input arguments.

*/

  nsCOMPtr<nsIMsgFolder> GetExisting(const nsACString& url);

/**

   * Internal helper to create a new folder given a URL and place it

   * in the cache. The newly created folder will be dangling and

   * needs to be parented by a calling function.

*/

  nsresult CreateDangling(const nsACString& url, nsIMsgFolder** folder);

  nsTHashMap<nsCString, nsWeakPtr> mFolderCache;

};

#endif  // COMM_MAILNEWS_BASE_SRC_FOLDERLOOKUPSERVICE_H_