Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 207 insertions, 0 deletions

diff --git a/dom/file/FileReader.h b/dom/file/FileReader.h
new file mode 100644
index 0000000000..1c07b6193f
--- /dev/null
+++ b/dom/file/FileReader.h
@@ -0,0 +1,207 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_FileReader_h
+#define mozilla_dom_FileReader_h
+
+#include "mozilla/Attributes.h"
+#include "mozilla/DOMEventTargetHelper.h"
+
+#include "nsIAsyncInputStream.h"
+#include "nsIInterfaceRequestor.h"
+#include "nsINamed.h"
+#include "nsITimer.h"
+#include "nsCOMPtr.h"
+#include "nsString.h"
+#include "nsWeakReference.h"
+
+#define NS_PROGRESS_EVENT_INTERVAL 50
+
+class nsITimer;
+class nsIEventTarget;
+
+namespace mozilla::dom {
+
+class Blob;
+class DOMException;
+class OwningStringOrArrayBuffer;
+class StrongWorkerRef;
+class WeakWorkerRef;
+
+extern const uint64_t kUnknownSize;
+
+class FileReaderDecreaseBusyCounter;
+
+// 26a79031-c94b-47e9-850a-f04fe17bc026
+#define FILEREADER_ID                                \
+  {                                                  \
+    0x26a79031, 0xc94b, 0x47e9, {                    \
+      0x85, 0x0a, 0xf0, 0x4f, 0xe1, 0x7b, 0xc0, 0x26 \
+    }                                                \
+  }
+
+class FileReader final : public DOMEventTargetHelper,
+                         public nsIInterfaceRequestor,
+                         public nsSupportsWeakReference,
+                         public nsIInputStreamCallback,
+                         public nsITimerCallback,
+                         public nsINamed {
+  friend class FileReaderDecreaseBusyCounter;
+
+ public:
+  FileReader(nsIGlobalObject* aGlobal, WeakWorkerRef* aWorkerRef);
+
+  NS_DECL_ISUPPORTS_INHERITED
+
+  NS_DECL_NSITIMERCALLBACK
+  NS_DECL_NSIINPUTSTREAMCALLBACK
+  NS_DECL_NSIINTERFACEREQUESTOR
+  NS_DECL_NSINAMED
+
+  NS_DECLARE_STATIC_IID_ACCESSOR(FILEREADER_ID)
+
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(FileReader,
+                                                         DOMEventTargetHelper)
+
+  JSObject* WrapObject(JSContext* aCx,
+                       JS::Handle<JSObject*> aGivenProto) override;
+
+  // WebIDL
+  static already_AddRefed<FileReader> Constructor(const GlobalObject& aGlobal);
+  void ReadAsArrayBuffer(JSContext* aCx, Blob& aBlob, ErrorResult& aRv) {
+    ReadFileContent(aBlob, u""_ns, FILE_AS_ARRAYBUFFER, aRv);
+  }
+
+  void ReadAsText(Blob& aBlob, const Optional<nsAString>& aLabel,
+                  ErrorResult& aRv) {
+    if (aLabel.WasPassed()) {
+      ReadFileContent(aBlob, aLabel.Value(), FILE_AS_TEXT, aRv);
+    } else {
+      ReadFileContent(aBlob, u""_ns, FILE_AS_TEXT, aRv);
+    }
+  }
+
+  void ReadAsDataURL(Blob& aBlob, ErrorResult& aRv) {
+    ReadFileContent(aBlob, u""_ns, FILE_AS_DATAURL, aRv);
+  }
+
+  void Abort();
+
+  uint16_t ReadyState() const { return static_cast<uint16_t>(mReadyState); }
+
+  DOMException* GetError() const { return mError; }
+
+  void GetResult(JSContext* aCx, Nullable<OwningStringOrArrayBuffer>& aResult);
+
+  IMPL_EVENT_HANDLER(loadstart)
+  IMPL_EVENT_HANDLER(progress)
+  IMPL_EVENT_HANDLER(load)
+  IMPL_EVENT_HANDLER(abort)
+  IMPL_EVENT_HANDLER(error)
+  IMPL_EVENT_HANDLER(loadend)
+
+  void ReadAsBinaryString(Blob& aBlob, ErrorResult& aRv) {
+    ReadFileContent(aBlob, u""_ns, FILE_AS_BINARY, aRv);
+  }
+
+  enum eDataFormat {
+    FILE_AS_ARRAYBUFFER,
+    FILE_AS_BINARY,
+    FILE_AS_TEXT,
+    FILE_AS_DATAURL
+  };
+
+  eDataFormat DataFormat() const { return mDataFormat; }
+  const nsString& Result() const { return mResult; }
+
+  void InitialAsyncWait();
+
+ private:
+  ~FileReader() override;
+
+  // This must be in sync with dom/webidl/FileReader.webidl
+  enum eReadyState { EMPTY = 0, LOADING = 1, DONE = 2 };
+
+  void RootResultArrayBuffer();
+
+  void ReadFileContent(Blob& aBlob, const nsAString& aCharset,
+                       eDataFormat aDataFormat, ErrorResult& aRv);
+  nsresult GetAsText(Blob* aBlob, const nsACString& aCharset,
+                     const char* aFileData, uint32_t aDataLen,
+                     nsAString& aResult);
+  nsresult GetAsDataURL(Blob* aBlob, const char* aFileData, uint32_t aDataLen,
+                        nsAString& aResult);
+
+  void OnLoadEnd(nsresult aStatus);
+
+  void StartProgressEventTimer();
+  void ClearProgressEventTimer();
+
+  void FreeDataAndDispatchSuccess();
+  void FreeDataAndDispatchError();
+  void FreeDataAndDispatchError(nsresult aRv);
+  nsresult DispatchProgressEvent(const nsAString& aType);
+
+  nsresult DoAsyncWait();
+  nsresult DoReadData(uint64_t aCount);
+
+  void OnLoadEndArrayBuffer();
+
+  void FreeFileData();
+
+  nsresult IncreaseBusyCounter();
+  void DecreaseBusyCounter();
+
+  void Cleanup();
+  void Shutdown();
+
+  char* mFileData;
+  RefPtr<Blob> mBlob;
+  nsCString mCharset;
+  uint32_t mDataLen;
+
+  eDataFormat mDataFormat;
+
+  nsString mResult;
+
+  JS::Heap<JSObject*> mResultArrayBuffer;
+
+  nsCOMPtr<nsITimer> mProgressNotifier;
+  bool mProgressEventWasDelayed;
+  bool mTimerIsActive;
+
+  nsCOMPtr<nsIAsyncInputStream> mAsyncStream;
+
+  RefPtr<DOMException> mError;
+
+  eReadyState mReadyState;
+
+  uint64_t mTotal;
+  uint64_t mTransferred;
+
+  nsCOMPtr<nsIEventTarget> mTarget;
+
+  uint64_t mBusyCount;
+
+  // This is set if FileReader is created on workers, but it is null if the
+  // worker is shutting down. The null value is checked in ReadFileContent()
+  // before starting any reading.
+  RefPtr<WeakWorkerRef> mWeakWorkerRef;
+
+  // This value is set when the reading starts in order to keep the worker alive
+  // during the process.
+  RefPtr<StrongWorkerRef> mStrongWorkerRef;
+
+  // Runnable to start the reading asynchronous.
+  class AsyncWaitRunnable;
+  RefPtr<AsyncWaitRunnable> mAsyncWaitRunnable;
+};
+
+NS_DEFINE_STATIC_IID_ACCESSOR(FileReader, FILEREADER_ID)
+
+}  // namespace mozilla::dom
+
+#endif  // mozilla_dom_FileReader_h