Shape Detection: Add Text Detection in Chrome Android

third_party/WebKit/Source/modules/shapedetection/TextDetector.h

+// Copyright 2017 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 TextDetector_h
+#define TextDetector_h
+
+#include "bindings/core/v8/ScriptPromise.h"
+#include "bindings/core/v8/ScriptPromiseResolver.h"
+#include "bindings/core/v8/ScriptWrappable.h"
+#include "modules/ModulesExport.h"
+#include "modules/canvas2d/CanvasRenderingContext2D.h"
+#include "modules/shapedetection/ShapeDetector.h"
+#include "public/platform/modules/shapedetection/textdetection.mojom-blink.h"
+
+namespace blink {
+
+class LocalFrame;
+
+class MODULES_EXPORT TextDetector final : public ShapeDetector,
+                                          public ScriptWrappable {
+  DEFINE_WRAPPERTYPEINFO();
+
+ public:
+  static TextDetector* create(Document&);
+
+  DECLARE_VIRTUAL_TRACE();
+
+ private:
+  explicit TextDetector(LocalFrame&);
+  ~TextDetector() override = default;
+
+  ScriptPromise doDetect(ScriptPromiseResolver*,
+                         mojo::ScopedSharedBufferHandle,
+                         int imageWidth,
+                         int imageHeight) override;
+  void onDetectText(ScriptPromiseResolver*,
+                    Vector<mojom::blink::TextDetectionResultPtr>);
+  void onTextServiceConnectionError();
+
+  mojom::blink::TextDetectionPtr m_textService;
+
+  HeapHashSet<Member<ScriptPromiseResolver>> m_textServiceRequests;
+};
+
+}  // namespace blink
+
+#endif  // TextDetector_h