tor-browser

The Tor Browser
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FileSystemFileEntry.cpp (3247B)

      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 "FileSystemFileEntry.h"
      8 
      9 #include "CallbackRunnables.h"
     10 #include "mozilla/dom/File.h"
     11 #include "mozilla/dom/FileSystemFileEntryBinding.h"
     12 #include "mozilla/dom/FileSystemUtils.h"
     13 #include "mozilla/dom/MultipartBlobImpl.h"
     14 
     15 namespace mozilla::dom {
     16 
     17 namespace {
     18 
     19 class FileCallbackRunnable final : public Runnable {
     20 public:
     21  FileCallbackRunnable(FileCallback* aCallback, File* aFile)
     22      : Runnable("FileCallbackRunnable"), mCallback(aCallback), mFile(aFile) {
     23    MOZ_ASSERT(aCallback);
     24    MOZ_ASSERT(aFile);
     25  }
     26 
     27  // MOZ_CAN_RUN_SCRIPT_BOUNDARY until Runnable::Run is MOZ_CAN_RUN_SCRIPT.  See
     28  // bug 1535398.
     29  MOZ_CAN_RUN_SCRIPT_BOUNDARY NS_IMETHOD Run() override {
     30    // Here we clone the File object.
     31 
     32    RefPtr<File> file = File::Create(mFile->GetParentObject(), mFile->Impl());
     33    mCallback->Call(*file);
     34    return NS_OK;
     35  }
     36 
     37 private:
     38  const RefPtr<FileCallback> mCallback;
     39  RefPtr<File> mFile;
     40 };
     41 
     42 }  // anonymous namespace
     43 
     44 NS_IMPL_CYCLE_COLLECTION_INHERITED(FileSystemFileEntry, FileSystemEntry, mFile)
     45 
     46 NS_IMPL_ADDREF_INHERITED(FileSystemFileEntry, FileSystemEntry)
     47 NS_IMPL_RELEASE_INHERITED(FileSystemFileEntry, FileSystemEntry)
     48 
     49 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(FileSystemFileEntry)
     50 NS_INTERFACE_MAP_END_INHERITING(FileSystemEntry)
     51 
     52 FileSystemFileEntry::FileSystemFileEntry(nsIGlobalObject* aGlobal, File* aFile,
     53                                         FileSystemDirectoryEntry* aParentEntry,
     54                                         FileSystem* aFileSystem)
     55    : FileSystemEntry(aGlobal, aParentEntry, aFileSystem), mFile(aFile) {
     56  MOZ_ASSERT(aGlobal);
     57  MOZ_ASSERT(mFile);
     58 }
     59 
     60 FileSystemFileEntry::~FileSystemFileEntry() = default;
     61 
     62 JSObject* FileSystemFileEntry::WrapObject(JSContext* aCx,
     63                                          JS::Handle<JSObject*> aGivenProto) {
     64  return FileSystemFileEntry_Binding::Wrap(aCx, this, aGivenProto);
     65 }
     66 
     67 void FileSystemFileEntry::GetName(nsAString& aName, ErrorResult& aRv) const {
     68  mFile->GetName(aName);
     69 }
     70 
     71 void FileSystemFileEntry::GetFullPath(nsAString& aPath,
     72                                      ErrorResult& aRv) const {
     73  mFile->Impl()->GetDOMPath(aPath);
     74  if (aPath.IsEmpty()) {
     75    // We're under the root directory. webkitRelativePath
     76    // (implemented as GetPath) is for cases when file is selected because its
     77    // ancestor directory is selected. But that is not the case here, so need to
     78    // manually prepend '/'.
     79    nsAutoString name;
     80    mFile->GetName(name);
     81    aPath.AssignLiteral(FILESYSTEM_DOM_PATH_SEPARATOR_LITERAL);
     82    aPath.Append(name);
     83  }
     84 }
     85 
     86 void FileSystemFileEntry::GetFile(
     87    FileCallback& aSuccessCallback,
     88    const Optional<OwningNonNull<ErrorCallback>>& aErrorCallback) const {
     89  RefPtr<FileCallbackRunnable> runnable =
     90      new FileCallbackRunnable(&aSuccessCallback, mFile);
     91 
     92  FileSystemUtils::DispatchRunnable(GetParentObject(), runnable.forget());
     93 }
     94 
     95 }  // namespace mozilla::dom