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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/renderer/java/gin_java_function_invocation_helper.h"
#include <utility>
#include "base/values.h"
#include "content/common/android/gin_java_bridge_errors.h"
#include "content/common/android/gin_java_bridge_value.h"
#include "content/public/renderer/v8_value_converter.h"
#include "content/renderer/java/gin_java_bridge_object.h"
#include "content/renderer/java/gin_java_bridge_value_converter.h"
#include "v8/include/v8-exception.h"
namespace content {
namespace {
const char kMethodInvocationAsConstructorDisallowed[] =
"Java bridge method can't be invoked as a constructor";
const char kMethodInvocationOnNonInjectedObjectDisallowed[] =
"Java bridge method can't be invoked on a non-injected object";
const char kMethodInvocationErrorMessage[] =
"Java bridge method invocation error";
} // namespace
GinJavaFunctionInvocationHelper::GinJavaFunctionInvocationHelper(
const std::string& method_name,
const base::WeakPtr<GinJavaBridgeDispatcher>& dispatcher)
: method_name_(method_name),
dispatcher_(dispatcher),
converter_(new GinJavaBridgeValueConverter()) {}
GinJavaFunctionInvocationHelper::~GinJavaFunctionInvocationHelper() {
}
v8::Local<v8::Value> GinJavaFunctionInvocationHelper::Invoke(
gin::Arguments* args) {
if (!dispatcher_) {
args->isolate()->ThrowException(v8::Exception::Error(gin::StringToV8(
args->isolate(), kMethodInvocationErrorMessage)));
return v8::Undefined(args->isolate());
}
if (args->IsConstructCall()) {
args->isolate()->ThrowException(v8::Exception::Error(gin::StringToV8(
args->isolate(), kMethodInvocationAsConstructorDisallowed)));
return v8::Undefined(args->isolate());
}
content::GinJavaBridgeObject* object = nullptr;
if (!args->GetHolder(&object) || !object) {
args->isolate()->ThrowException(v8::Exception::Error(gin::StringToV8(
args->isolate(), kMethodInvocationOnNonInjectedObjectDisallowed)));
return v8::Undefined(args->isolate());
}
base::Value::List arguments;
{
v8::HandleScope handle_scope(args->isolate());
v8::Local<v8::Context> context = args->isolate()->GetCurrentContext();
v8::Local<v8::Value> val;
while (args->GetNext(&val)) {
std::unique_ptr<base::Value> arg(converter_->FromV8Value(val, context));
if (arg) {
arguments.Append(base::Value::FromUniquePtrValue(std::move(arg)));
} else {
arguments.Append(base::Value());
}
}
}
mojom::GinJavaBridgeError error =
mojom::GinJavaBridgeError::kGinJavaBridgeNoError;
std::unique_ptr<base::Value> result;
if (auto* remote = object->GetRemote()) {
base::Value::List result_wrapper;
if (remote->InvokeMethod(method_name_, std::move(arguments), &error,
&result_wrapper)) {
if (!result_wrapper.empty()) {
result = base::Value::ToUniquePtrValue(result_wrapper[0].Clone());
}
} else {
error = mojom::GinJavaBridgeError::kGinJavaBridgeObjectIsGone;
}
}
if (!result.get()) {
args->isolate()->ThrowException(v8::Exception::Error(gin::StringToV8(
args->isolate(), GinJavaBridgeErrorToString(error))));
return v8::Undefined(args->isolate());
}
if (!result->is_blob()) {
return converter_->ToV8Value(result.get(),
args->isolate()->GetCurrentContext());
}
std::unique_ptr<const GinJavaBridgeValue> gin_value =
GinJavaBridgeValue::FromValue(result.get());
if (gin_value->IsType(GinJavaBridgeValue::TYPE_OBJECT_ID)) {
GinJavaBridgeObject* object_result = NULL;
GinJavaBridgeDispatcher::ObjectID object_id;
if (gin_value->GetAsObjectID(&object_id)) {
object_result = dispatcher_->GetObject(object_id);
}
if (object_result) {
gin::Handle<GinJavaBridgeObject> controller =
gin::CreateHandle(args->isolate(), object_result);
if (controller.IsEmpty())
return v8::Undefined(args->isolate());
return controller.ToV8();
}
} else if (gin_value->IsType(GinJavaBridgeValue::TYPE_NONFINITE)) {
float float_value;
gin_value->GetAsNonFinite(&float_value);
return v8::Number::New(args->isolate(), float_value);
}
return v8::Undefined(args->isolate());
}
} // namespace content
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