chromium/src/third_party/blink/renderer/modules/shapedetection/barcode_detector.h

// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_SHAPEDETECTION_BARCODE_DETECTOR_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_SHAPEDETECTION_BARCODE_DETECTOR_H_

#include "services/shape_detection/public/mojom/barcodedetection.mojom-blink.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise_resolver.h"
#include "third_party/blink/renderer/modules/canvas/canvas2d/canvas_rendering_context_2d.h"
#include "third_party/blink/renderer/modules/modules_export.h"
#include "third_party/blink/renderer/modules/shapedetection/shape_detector.h"
#include "third_party/blink/renderer/platform/mojo/heap_mojo_remote.h"
#include "third_party/blink/renderer/platform/mojo/heap_mojo_wrapper_mode.h"

namespace blink {

class ExecutionContext;
class BarcodeDetectorOptions;

class MODULES_EXPORT BarcodeDetector final : public ShapeDetector {
  DEFINE_WRAPPERTYPEINFO();

 public:
  static BarcodeDetector* Create(ExecutionContext*,
                                 const BarcodeDetectorOptions*,
                                 ExceptionState& exception_state);

  // Barcode Detection API functions.
  static ScriptPromise getSupportedFormats(ScriptState*);

  static String BarcodeFormatToString(
      const shape_detection::mojom::BarcodeFormat format);

  explicit BarcodeDetector(ExecutionContext*,
                           const BarcodeDetectorOptions*,
                           ExceptionState& exception_state);
  ~BarcodeDetector() override = default;

  void Trace(Visitor*) const override;

 private:
  ScriptPromise DoDetect(ScriptPromiseResolver*, SkBitmap) override;
  void OnDetectBarcodes(
      ScriptPromiseResolver*,
      Vector<shape_detection::mojom::blink::BarcodeDetectionResultPtr>);

  void OnConnectionError();

  HeapMojoRemote<shape_detection::mojom::blink::BarcodeDetection,
                 HeapMojoWrapperMode::kWithoutContextObserver>
      service_;

  HeapHashSet<Member<ScriptPromiseResolver>> detect_requests_;
};

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_MODULES_SHAPEDETECTION_BARCODE_DETECTOR_H_