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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/handwriting/handwriting_recognizer.h"
#include "third_party/blink/public/platform/task_type.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_handwriting_hints.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/modules/handwriting/handwriting_drawing.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
namespace blink {
namespace {
const char kInvalidErrorMessage[] = "This recognizer has been invalidated.";
}
HandwritingRecognizer::HandwritingRecognizer(
ExecutionContext* context,
mojo::PendingRemote<handwriting::mojom::blink::HandwritingRecognizer>
pending_remote)
: remote_service_(context) {
remote_service_.Bind(std::move(pending_remote),
context->GetTaskRunner(TaskType::kInternalDefault));
}
HandwritingRecognizer::~HandwritingRecognizer() = default;
bool HandwritingRecognizer::IsValid() {
return remote_service_.is_bound();
}
void HandwritingRecognizer::GetPrediction(
Vector<handwriting::mojom::blink::HandwritingStrokePtr> strokes,
handwriting::mojom::blink::HandwritingHintsPtr hints,
handwriting::mojom::blink::HandwritingRecognizer::GetPredictionCallback
callback) {
remote_service_->GetPrediction(std::move(strokes), std::move(hints),
std::move(callback));
}
HandwritingDrawing* HandwritingRecognizer::startDrawing(
ScriptState* script_state,
const HandwritingHints* hints,
ExceptionState& exception_state) {
if (!IsValid()) {
exception_state.ThrowDOMException(DOMExceptionCode::kInvalidStateError,
kInvalidErrorMessage);
return nullptr;
}
auto* handwriting_drawing = MakeGarbageCollected<HandwritingDrawing>(
ExecutionContext::From(script_state), this, hints);
return handwriting_drawing;
}
void HandwritingRecognizer::finish(ExceptionState& exception_state) {
if (!IsValid()) {
exception_state.ThrowDOMException(DOMExceptionCode::kInvalidStateError,
kInvalidErrorMessage);
return;
}
Invalidate();
}
void HandwritingRecognizer::Trace(Visitor* visitor) const {
visitor->Trace(remote_service_);
ScriptWrappable::Trace(visitor);
}
void HandwritingRecognizer::Invalidate() {
remote_service_.reset();
}
} // namespace blink
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