src/third_party/WebKit/Source/modules/serviceworkers/FetchBodyStream.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef FetchBodyStream_h
   6 #define FetchBodyStream_h
   7
   8 #include "bindings/core/v8/ScriptPromise.h"
   9 #include "bindings/core/v8/ScriptPromiseResolver.h"
  10 #include "bindings/core/v8/ScriptWrappable.h"
  11 #include "core/dom/ActiveDOMObject.h"
  12 #include "core/fileapi/FileReaderLoader.h"
  13 #include "core/fileapi/FileReaderLoaderClient.h"
  14 #include "platform/blob/BlobData.h"
  15 #include "platform/heap/Handle.h"
  16 #include "wtf/RefCounted.h"
  17 #include "wtf/RefPtr.h"
  18
  19 namespace blink {
  20
  21 class ScriptState;
  22
  23 class FetchBodyStream FINAL
  24     : public RefCountedWillBeGarbageCollectedFinalized<FetchBodyStream>
  25     , public ScriptWrappable
  26     , public ActiveDOMObject
  27     , public FileReaderLoaderClient {
  28 public:
  29     enum ResponseType {
  30         ResponseAsArrayBuffer,
  31         ResponseAsBlob,
  32         ResponseAsFormData,
  33         ResponseAsJSON,
  34         ResponseAsText
  35     };
  36
  37     static PassRefPtrWillBeRawPtr<FetchBodyStream> create(ExecutionContext*, PassRefPtr<BlobDataHandle>);
  38     ~FetchBodyStream() { }
  39
  40     ScriptPromise asArrayBuffer(ScriptState*);
  41     ScriptPromise asBlob(ScriptState*);
  42     ScriptPromise asFormData(ScriptState*);
  43     ScriptPromise asJSON(ScriptState*);
  44     ScriptPromise asText(ScriptState*);
  45
  46     // ActiveDOMObject override.
  47     virtual void stop() OVERRIDE;
  48     virtual bool hasPendingActivity() const OVERRIDE;
  49
  50     void trace(Visitor*) { }
  51
  52 private:
  53     FetchBodyStream(ExecutionContext*, PassRefPtr<BlobDataHandle>);
  54     ScriptPromise readAsync(ScriptState*, ResponseType);
  55     void resolveJSON();
  56
  57     // FileReaderLoaderClient functions.
  58     virtual void didStartLoading() OVERRIDE;
  59     virtual void didReceiveData() OVERRIDE;
  60     virtual void didFinishLoading() OVERRIDE;
  61     virtual void didFail(FileError::ErrorCode) OVERRIDE;
  62
  63     RefPtr<BlobDataHandle> m_blobDataHandle;
  64     OwnPtr<FileReaderLoader> m_loader;
  65     bool m_hasRead;
  66     ResponseType m_responseType;
  67     RefPtr<ScriptPromiseResolver> m_resolver;
  68 };
  69
  70 } // namespace blink
  71
  72 #endif // FetchBodyStream_h