third_party/WebKit/Source/modules/filesystem/LocalFileSystem.h

/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
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 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#ifndef LocalFileSystem_h
#define LocalFileSystem_h

#include <memory>
#include "core/frame/LocalFrame.h"
#include "core/workers/WorkerClients.h"
#include "platform/FileSystemType.h"
#include "platform/Supplementable.h"
#include "platform/heap/Handle.h"
#include "platform/wtf/Forward.h"
#include "platform/wtf/Functional.h"

namespace blink {

class AsyncFileSystemCallbacks;
class CallbackWrapper;
class FileSystemClient;
class ExecutionContext;
class KURL;
class WebFileSystem;

class LocalFileSystem final : public GarbageCollectedFinalized<LocalFileSystem>,
                              public Supplement<LocalFrame>,
                              public Supplement<WorkerClients>,
                              public TraceWrapperBase {
  USING_GARBAGE_COLLECTED_MIXIN(LocalFileSystem);
  WTF_MAKE_NONCOPYABLE(LocalFileSystem);

 public:
  LocalFileSystem(LocalFrame&, std::unique_ptr<FileSystemClient>);
  LocalFileSystem(WorkerClients&, std::unique_ptr<FileSystemClient>);
  ~LocalFileSystem();

  void ResolveURL(ExecutionContext*,
                  const KURL&,
                  std::unique_ptr<AsyncFileSystemCallbacks>);
  void RequestFileSystem(ExecutionContext*,
                         FileSystemType,
                         long long size,
                         std::unique_ptr<AsyncFileSystemCallbacks>);

  FileSystemClient& Client() const { return *client_; }

  static const char* SupplementName();
  static LocalFileSystem* From(ExecutionContext&);

  void Trace(blink::Visitor*) override;
  void TraceWrappers(const ScriptWrappableVisitor*) const override;

 private:
  WebFileSystem* GetFileSystem() const;
  void FileSystemNotAvailable(ExecutionContext*, CallbackWrapper*);

  void RequestFileSystemAccessInternal(ExecutionContext*,
                                       base::OnceClosure allowed,
                                       base::OnceClosure denied);
  void FileSystemNotAllowedInternal(ExecutionContext*, CallbackWrapper*);
  void FileSystemAllowedInternal(ExecutionContext*,
                                 FileSystemType,
                                 CallbackWrapper*);
  void ResolveURLInternal(ExecutionContext*, const KURL&, CallbackWrapper*);

  const std::unique_ptr<FileSystemClient> client_;
};

}  // namespace blink

#endif  // LocalFileSystem_h