dom/filesystem/OSFileSystem.cpp

   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 #include "mozilla/dom/OSFileSystem.h"
   8
   9 #include "mozilla/dom/Directory.h"
  10 #include "mozilla/dom/File.h"
  11 #include "mozilla/dom/FileSystemUtils.h"
  12 #include "nsIGlobalObject.h"
  13 #include "nsCOMPtr.h"
  14 #include "nsDebug.h"
  15 #include "nsIFile.h"
  16
  17 namespace mozilla::dom {
  18
  19 OSFileSystem::OSFileSystem(const nsAString& aRootDir) {
  20   mLocalRootPath = aRootDir;
  21 }
  22
  23 already_AddRefed<FileSystemBase> OSFileSystem::Clone() {
  24   AssertIsOnOwningThread();
  25
  26   RefPtr<OSFileSystem> fs = new OSFileSystem(mLocalRootPath);
  27   if (mGlobal) {
  28     fs->Init(mGlobal);
  29   }
  30
  31   return fs.forget();
  32 }
  33
  34 void OSFileSystem::Init(nsIGlobalObject* aGlobal) {
  35   AssertIsOnOwningThread();
  36   MOZ_ASSERT(!mGlobal, "No duple Init() calls");
  37   MOZ_ASSERT(aGlobal);
  38
  39   mGlobal = aGlobal;
  40 }
  41
  42 nsIGlobalObject* OSFileSystem::GetParentObject() const {
  43   AssertIsOnOwningThread();
  44   return mGlobal;
  45 }
  46
  47 bool OSFileSystem::IsSafeFile(nsIFile* aFile) const {
  48   // The concept of "safe files" is specific to the Device Storage API where
  49   // files are only "safe" if they're of a type that is appropriate for the
  50   // area of device storage that is being used.
  51   MOZ_CRASH("Don't use OSFileSystem with the Device Storage API");
  52   return true;
  53 }
  54
  55 bool OSFileSystem::IsSafeDirectory(Directory* aDir) const {
  56   // The concept of "safe directory" is specific to the Device Storage API
  57   // where a directory is only "safe" if it belongs to the area of device
  58   // storage that it is being used with.
  59   MOZ_CRASH("Don't use OSFileSystem with the Device Storage API");
  60   return true;
  61 }
  62
  63 void OSFileSystem::Unlink() {
  64   AssertIsOnOwningThread();
  65   mGlobal = nullptr;
  66 }
  67
  68 void OSFileSystem::Traverse(nsCycleCollectionTraversalCallback& cb) {
  69   AssertIsOnOwningThread();
  70
  71   OSFileSystem* tmp = this;
  72   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mGlobal);
  73 }
  74
  75 void OSFileSystem::SerializeDOMPath(nsAString& aOutput) const {
  76   AssertIsOnOwningThread();
  77   aOutput = mLocalRootPath;
  78 }
  79
  80 /**
  81  * OSFileSystemParent
  82  */
  83
  84 OSFileSystemParent::OSFileSystemParent(const nsAString& aRootDir) {
  85   mLocalRootPath = aRootDir;
  86 }
  87
  88 }  // namespace mozilla::dom