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The Tor Browser
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OSFileSystem.h (2964B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
      5 * You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #ifndef mozilla_dom_OSFileSystem_h
      8 #define mozilla_dom_OSFileSystem_h
      9 
     10 #include "mozilla/dom/FileSystemBase.h"
     11 
     12 namespace mozilla::dom {
     13 
     14 class OSFileSystem final : public FileSystemBase {
     15 public:
     16  explicit OSFileSystem(const nsAString& aRootDir);
     17 
     18  void Init(nsIGlobalObject* aGlobal);
     19 
     20  // Overrides FileSystemBase
     21 
     22  virtual already_AddRefed<FileSystemBase> Clone() override;
     23 
     24  virtual bool ShouldCreateDirectory() override {
     25    MOZ_CRASH("This should not be called.");
     26    // Because OSFileSystem should not be used when the creation of directories
     27    // is needed. For that we have OSFileSystemParent.
     28    return false;
     29  }
     30 
     31  virtual nsIGlobalObject* GetParentObject() const override;
     32 
     33  virtual bool IsSafeFile(nsIFile* aFile) const override;
     34 
     35  virtual bool IsSafeDirectory(Directory* aDir) const override;
     36 
     37  virtual void SerializeDOMPath(nsAString& aOutput) const override;
     38 
     39  // CC methods
     40  virtual void Unlink() override;
     41  virtual void Traverse(nsCycleCollectionTraversalCallback& cb) override;
     42 
     43 private:
     44  virtual ~OSFileSystem() = default;
     45 
     46  nsCOMPtr<nsIGlobalObject> mGlobal;
     47 };
     48 
     49 class OSFileSystemParent final : public FileSystemBase {
     50 public:
     51  explicit OSFileSystemParent(const nsAString& aRootDir);
     52 
     53  // Overrides FileSystemBase
     54 
     55  virtual already_AddRefed<FileSystemBase> Clone() override {
     56    MOZ_CRASH("This should not be called on the PBackground thread.");
     57    return nullptr;
     58  }
     59 
     60  virtual bool ShouldCreateDirectory() override { return false; }
     61 
     62  virtual nsIGlobalObject* GetParentObject() const override {
     63    MOZ_CRASH("This should not be called on the PBackground thread.");
     64    return nullptr;
     65  }
     66 
     67  virtual void GetDirectoryName(nsIFile* aFile, nsAString& aRetval,
     68                                ErrorResult& aRv) const override {
     69    MOZ_CRASH("This should not be called on the PBackground thread.");
     70  }
     71 
     72  virtual bool IsSafeFile(nsIFile* aFile) const override { return true; }
     73 
     74  virtual bool IsSafeDirectory(Directory* aDir) const override {
     75    MOZ_CRASH("This should not be called on the PBackground thread.");
     76    return true;
     77  }
     78 
     79  virtual void SerializeDOMPath(nsAString& aOutput) const override {
     80    MOZ_CRASH("This should not be called on the PBackground thread.");
     81  }
     82 
     83  // CC methods
     84  virtual void Unlink() override {
     85    MOZ_CRASH("This should not be called on the PBackground thread.");
     86  }
     87 
     88  virtual void Traverse(nsCycleCollectionTraversalCallback& cb) override {
     89    MOZ_CRASH("This should not be called on the PBackground thread.");
     90  }
     91 
     92 private:
     93  virtual ~OSFileSystemParent() = default;
     94 };
     95 
     96 }  // namespace mozilla::dom
     97 
     98 #endif  // mozilla_dom_OSFileSystem_h