chrome/browser/download/download_completion_blocker.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/download/download_completion_blocker.h"
   6
   7 #include "base/logging.h"
   8
   9 DownloadCompletionBlocker::DownloadCompletionBlocker()
  10   : is_complete_(false) {
  11 }
  12
  13 DownloadCompletionBlocker::~DownloadCompletionBlocker() {
  14 }
  15
  16 void DownloadCompletionBlocker::CompleteDownload() {
  17   // Do not run |callback_| more than once.
  18   if (is_complete_)
  19     return;
  20   is_complete_ = true;
  21
  22   if (callback_.is_null())
  23     return;
  24   callback_.Run();
  25   // |callback_| may delete |this|, so do not rely on |this| after running
  26   // |callback_|!
  27 }