/* 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/. */

// Original author: ekr@rtfm.com
#include "transportlayer.h"

#include "logging.h"

// Logging context
namespace mozilla {

MOZ_MTLOG_MODULE("mtransport")

nsresult TransportLayer::Init() {
  if (state_ != TS_NONE) return state_ == TS_ERROR ? NS_ERROR_FAILURE : NS_OK;

  nsresult rv = InitInternal();

  if (!NS_SUCCEEDED(rv)) {
    state_ = TS_ERROR;
    return rv;
  }
  state_ = TS_INIT;

  return NS_OK;
}

void TransportLayer::Chain(TransportLayer* downward) {
  downward_ = downward;
  MOZ_MTLOG(ML_DEBUG, LAYER_INFO << "Inserted: downward='"
                                 << (downward ? downward->id() : "none")
                                 << "'");

  WasInserted();
}

void TransportLayer::SetState(State state, const char* file, unsigned line) {
  if (state != state_) {
    MOZ_MTLOG(state == TS_ERROR ? ML_ERROR : ML_DEBUG,
              file << ":" << line << ": " << LAYER_INFO << "state " << state_
                   << "->" << state);
    state_ = state;
    SignalStateChange(this, state);
  }
}

}  // namespace mozilla