content/child/fileapi/webfilewriter_impl.h

   1 // Copyright 2013 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 CONTENT_CHILD_FILEAPI_WEBFILEWRITER_IMPL_H_
   6 #define CONTENT_CHILD_FILEAPI_WEBFILEWRITER_IMPL_H_
   7
   8 #include <string>
   9
  10 #include "base/memory/ref_counted.h"
  11 #include "base/memory/weak_ptr.h"
  12 #include "content/child/fileapi/webfilewriter_base.h"
  13
  14 namespace content {
  15
  16 // An implementation of WebFileWriter for use in chrome renderers and workers.
  17 class WebFileWriterImpl : public WebFileWriterBase,
  18                           public base::SupportsWeakPtr<WebFileWriterImpl> {
  19  public:
  20   enum Type {
  21     TYPE_SYNC,
  22     TYPE_ASYNC,
  23   };
  24
  25   WebFileWriterImpl(const GURL& path,
  26                     blink::WebFileWriterClient* client,
  27                     Type type,
  28                     const scoped_refptr<base::SingleThreadTaskRunner>&
  29                         main_thread_task_runner);
  30   virtual ~WebFileWriterImpl();
  31
  32  protected:
  33   // WebFileWriterBase overrides
  34   void DoTruncate(const GURL& path, int64 offset) override;
  35   void DoWrite(const GURL& path,
  36                const std::string& blob_id,
  37                int64 offset) override;
  38   void DoCancel() override;
  39
  40  private:
  41   class WriterBridge;
  42
  43   void RunOnMainThread(const base::Closure& closure);
  44
  45   scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner_;
  46   scoped_refptr<WriterBridge> bridge_;
  47 };
  48
  49 }  // namespace content
  50
  51 #endif  // CONTENT_CHILD_FILEAPI_WEBFILEWRITER_IMPL_H_