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