MsgOperationListener.h

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/* 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_MSGOPERATIONLISTENER_H_

#define COMM_MAILNEWS_BASE_SRC_MSGOPERATIONLISTENER_H_

#include <functional>  // For std::function.

#include "nsIMsgHdr.h"

#include "nsIMsgOperationListener.h"

#include "nsTArray.h"

/**

 * MsgOperationListener is a small helper implementation of

 * nsIMsgOperationListener which wraps a callable object.

*/

class MsgOperationListener : public nsIMsgOperationListener {

 public:

  NS_DECL_ISUPPORTS

  using StopFunc =

      std::function<nsresult(nsresult, const nsTArray<RefPtr<nsIMsgDBHdr>>&)>;

  MsgOperationListener() = delete;

  explicit MsgOperationListener(

      const nsTArray<RefPtr<nsIMsgDBHdr>>& newMessages, StopFunc fn)

      : mStopFunc(std::move(fn)), mNewMessages(newMessages.Clone()) {

    MOZ_ASSERT(mStopFunc);

  NS_IMETHOD OnStopOperation(nsresult status) override {

    return mStopFunc(status, mNewMessages);

 protected:

  StopFunc mStopFunc;

  const nsTArray<RefPtr<nsIMsgDBHdr>> mNewMessages;

  virtual ~MsgOperationListener() {}

};

#endif  // COMM_MAILNEWS_BASE_SRC_MSGOPERATIONLISTENER_H_