| /* |
| * Copyright (C) 2010 Google Inc. All rights reserved. |
| * |
| * 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 |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * 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 |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_FILEAPI_FILE_READER_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_CORE_FILEAPI_FILE_READER_H_ |
| |
| #include <memory> |
| #include "third_party/blink/renderer/bindings/core/v8/active_script_wrappable.h" |
| #include "third_party/blink/renderer/core/core_export.h" |
| #include "third_party/blink/renderer/core/dom/context_lifecycle_observer.h" |
| #include "third_party/blink/renderer/core/dom/events/event_target.h" |
| #include "third_party/blink/renderer/core/fileapi/file_reader_loader.h" |
| #include "third_party/blink/renderer/core/fileapi/file_reader_loader_client.h" |
| #include "third_party/blink/renderer/platform/heap/handle.h" |
| #include "third_party/blink/renderer/platform/wtf/forward.h" |
| |
| namespace blink { |
| |
| class Blob; |
| class ExceptionState; |
| class ExecutionContext; |
| enum class FileErrorCode; |
| class StringOrArrayBuffer; |
| |
| class CORE_EXPORT FileReader final : public EventTargetWithInlineData, |
| public ActiveScriptWrappable<FileReader>, |
| public ContextLifecycleObserver, |
| public FileReaderLoaderClient { |
| DEFINE_WRAPPERTYPEINFO(); |
| USING_GARBAGE_COLLECTED_MIXIN(FileReader); |
| |
| public: |
| static FileReader* Create(ExecutionContext*); |
| |
| explicit FileReader(ExecutionContext*); |
| ~FileReader() override; |
| |
| enum ReadyState { kEmpty = 0, kLoading = 1, kDone = 2 }; |
| |
| void readAsArrayBuffer(Blob*, ExceptionState&); |
| void readAsBinaryString(Blob*, ExceptionState&); |
| void readAsText(Blob*, const String& encoding, ExceptionState&); |
| void readAsText(Blob*, ExceptionState&); |
| void readAsDataURL(Blob*, ExceptionState&); |
| void abort(); |
| |
| ReadyState getReadyState() const { return state_; } |
| DOMException* error() { return error_; } |
| void result(ScriptState*, StringOrArrayBuffer& result_attribute) const; |
| |
| // ContextLifecycleObserver |
| void ContextDestroyed(ExecutionContext*) override; |
| |
| // ScriptWrappable |
| bool HasPendingActivity() const final; |
| |
| // EventTarget |
| const AtomicString& InterfaceName() const override; |
| ExecutionContext* GetExecutionContext() const override { |
| return ContextLifecycleObserver::GetExecutionContext(); |
| } |
| |
| // FileReaderLoaderClient |
| void DidStartLoading() override; |
| void DidReceiveData() override; |
| void DidFinishLoading() override; |
| void DidFail(FileErrorCode) override; |
| |
| DEFINE_ATTRIBUTE_EVENT_LISTENER(loadstart, kLoadstart); |
| DEFINE_ATTRIBUTE_EVENT_LISTENER(progress, kProgress); |
| DEFINE_ATTRIBUTE_EVENT_LISTENER(load, kLoad); |
| DEFINE_ATTRIBUTE_EVENT_LISTENER(abort, kAbort); |
| DEFINE_ATTRIBUTE_EVENT_LISTENER(error, kError); |
| DEFINE_ATTRIBUTE_EVENT_LISTENER(loadend, kLoadend); |
| |
| void Trace(blink::Visitor*) override; |
| |
| private: |
| class ThrottlingController; |
| |
| void Terminate(); |
| void ReadInternal(Blob*, FileReaderLoader::ReadType, ExceptionState&); |
| void FireEvent(const AtomicString& type); |
| |
| void ExecutePendingRead(); |
| |
| ReadyState state_; |
| |
| // Internal loading state, which could differ from ReadyState as it's |
| // for script-visible state while this one's for internal state. |
| enum LoadingState { |
| kLoadingStateNone, |
| kLoadingStatePending, |
| kLoadingStateLoading, |
| kLoadingStateAborted |
| }; |
| LoadingState loading_state_; |
| bool still_firing_events_; |
| |
| String blob_type_; |
| scoped_refptr<BlobDataHandle> blob_data_handle_; |
| FileReaderLoader::ReadType read_type_; |
| String encoding_; |
| |
| std::unique_ptr<FileReaderLoader> loader_; |
| Member<DOMException> error_; |
| double last_progress_notification_time_ms_; |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_CORE_FILEAPI_FILE_READER_H_ |