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// Copyright 2015 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.
#include "content/renderer/java/gin_java_function_invocation_helper.h"
#include "content/common/android/gin_java_bridge_errors.h"
#include "content/common/android/gin_java_bridge_value.h"
#include "content/public/child/v8_value_converter.h"
#include "content/renderer/java/gin_java_bridge_object.h"
#include "content/renderer/java/gin_java_bridge_value_converter.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 = NULL;
if (!args->GetHolder(&object) || !object) {
args->isolate()->ThrowException(v8::Exception::Error(gin::StringToV8(
args->isolate(), kMethodInvocationOnNonInjectedObjectDisallowed)));
return v8::Undefined(args->isolate());
}
base::ListValue arguments;
{
v8::HandleScope handle_scope(args->isolate());
v8::Local<v8::Context> context = args->isolate()->GetCurrentContext();
v8::Local<v8::Value> val;
while (args->GetNext(&val)) {
scoped_ptr<base::Value> arg(converter_->FromV8Value(val, context));
if (arg.get()) {
arguments.Append(arg.release());
} else {
arguments.Append(base::Value::CreateNullValue());
}
}
}
GinJavaBridgeError error;
scoped_ptr<base::Value> result = dispatcher_->InvokeJavaMethod(
object->object_id(), method_name_, arguments, &error);
if (!result.get()) {
args->isolate()->ThrowException(v8::Exception::Error(gin::StringToV8(
args->isolate(), GinJavaBridgeErrorToString(error))));
return v8::Undefined(args->isolate());
}
if (!result->IsType(base::Value::TYPE_BINARY)) {
return converter_->ToV8Value(result.get(),
args->isolate()->GetCurrentContext());
}
scoped_ptr<const GinJavaBridgeValue> gin_value =
GinJavaBridgeValue::FromValue(result.get());
if (gin_value->IsType(GinJavaBridgeValue::TYPE_OBJECT_ID)) {
GinJavaBridgeObject* result = NULL;
GinJavaBridgeDispatcher::ObjectID object_id;
if (gin_value->GetAsObjectID(&object_id)) {
result = dispatcher_->GetObject(object_id);
}
if (result) {
gin::Handle<GinJavaBridgeObject> controller =
gin::CreateHandle(args->isolate(), 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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