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// Copyright 2014 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_bridge_object.h"
#include "base/strings/utf_string_conversions.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_value_converter.h"
#include "gin/function_template.h"
#include "third_party/WebKit/public/web/WebFrame.h"
#include "third_party/WebKit/public/web/WebKit.h"
namespace content {
namespace {
const char kMethodInvocationErrorMessage[] =
"Java bridge method invocation error";
} // namespace
// static
GinJavaBridgeObject* GinJavaBridgeObject::InjectNamed(
blink::WebFrame* frame,
const base::WeakPtr<GinJavaBridgeDispatcher>& dispatcher,
const std::string& object_name,
GinJavaBridgeDispatcher::ObjectID object_id) {
v8::Isolate* isolate = blink::mainThreadIsolate();
v8::HandleScope handle_scope(isolate);
v8::Handle<v8::Context> context = frame->mainWorldScriptContext();
if (context.IsEmpty())
return NULL;
GinJavaBridgeObject* object =
new GinJavaBridgeObject(isolate, dispatcher, object_id);
v8::Context::Scope context_scope(context);
v8::Handle<v8::Object> global = context->Global();
gin::Handle<GinJavaBridgeObject> controller =
gin::CreateHandle(isolate, object);
// WrappableBase instance deletes itself in case of a wrapper
// creation failure, thus there is no need to delete |object|.
if (controller.IsEmpty())
return NULL;
global->Set(gin::StringToV8(isolate, object_name), controller.ToV8());
return object;
}
// static
GinJavaBridgeObject* GinJavaBridgeObject::InjectAnonymous(
const base::WeakPtr<GinJavaBridgeDispatcher>& dispatcher,
GinJavaBridgeDispatcher::ObjectID object_id) {
return new GinJavaBridgeObject(
blink::mainThreadIsolate(), dispatcher, object_id);
}
GinJavaBridgeObject::GinJavaBridgeObject(
v8::Isolate* isolate,
const base::WeakPtr<GinJavaBridgeDispatcher>& dispatcher,
GinJavaBridgeDispatcher::ObjectID object_id)
: gin::NamedPropertyInterceptor(isolate, this),
dispatcher_(dispatcher),
object_id_(object_id),
converter_(new GinJavaBridgeValueConverter()) {
}
GinJavaBridgeObject::~GinJavaBridgeObject() {
if (dispatcher_)
dispatcher_->OnGinJavaBridgeObjectDeleted(object_id_);
}
gin::ObjectTemplateBuilder GinJavaBridgeObject::GetObjectTemplateBuilder(
v8::Isolate* isolate) {
return gin::Wrappable<GinJavaBridgeObject>::GetObjectTemplateBuilder(isolate)
.AddNamedPropertyInterceptor();
}
v8::Local<v8::Value> GinJavaBridgeObject::GetNamedProperty(
v8::Isolate* isolate,
const std::string& property) {
if (dispatcher_ && dispatcher_->HasJavaMethod(object_id_, property)) {
return gin::CreateFunctionTemplate(
isolate,
base::Bind(&GinJavaBridgeObject::InvokeMethod,
base::Unretained(this),
property))->GetFunction();
} else {
return v8::Local<v8::Value>();
}
}
std::vector<std::string> GinJavaBridgeObject::EnumerateNamedProperties(
v8::Isolate* isolate) {
std::set<std::string> method_names;
if (dispatcher_)
dispatcher_->GetJavaMethods(object_id_, &method_names);
return std::vector<std::string> (method_names.begin(), method_names.end());
}
v8::Handle<v8::Value> GinJavaBridgeObject::InvokeMethod(
const std::string& name,
gin::Arguments* args) {
if (!dispatcher_) {
args->isolate()->ThrowException(v8::Exception::Error(gin::StringToV8(
args->isolate(), kMethodInvocationErrorMessage)));
return v8::Undefined(args->isolate());
}
base::ListValue arguments;
{
v8::HandleScope handle_scope(args->isolate());
v8::Handle<v8::Context> context = args->isolate()->GetCurrentContext();
v8::Handle<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_id_, 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());
}
gin::WrapperInfo GinJavaBridgeObject::kWrapperInfo = {gin::kEmbedderNativeGin};
} // namespace content
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