chrome/utility/importer/importer.h

   1 // Copyright (c) 2011 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 #ifndef CHROME_UTILITY_IMPORTER_IMPORTER_H_
   6 #define CHROME_UTILITY_IMPORTER_IMPORTER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/ref_counted.h"
  10
  11 class ImporterBridge;
  12
  13 namespace importer {
  14 struct SourceProfile;
  15 }
  16
  17 // The base class of all importers.
  18 class Importer : public base::RefCountedThreadSafe<Importer> {
  19  public:
  20   // All importers should implement this method by adding their import logic.
  21   // And it will be run in file thread by ImporterHost. Since we do async
  22   // import, the importer should invoke ImporterHost::NotifyImportEnded() to
  23   // notify its host that import stuff have been finished.
  24   virtual void StartImport(const importer::SourceProfile& source_profile,
  25                            uint16 items,
  26                            ImporterBridge* bridge) = 0;
  27
  28   // Cancels the import process.
  29   virtual void Cancel();
  30
  31   bool cancelled() const { return cancelled_; }
  32
  33  protected:
  34   friend class base::RefCountedThreadSafe<Importer>;
  35
  36   Importer();
  37   virtual ~Importer();
  38
  39   scoped_refptr<ImporterBridge> bridge_;
  40
  41  private:
  42   // True if the caller cancels the import process.
  43   bool cancelled_;
  44
  45   DISALLOW_COPY_AND_ASSIGN(Importer);
  46 };
  47
  48 #endif  // CHROME_UTILITY_IMPORTER_IMPORTER_H_