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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 "components/contextual_search/renderer/contextual_search_wrapper.h"
#include "base/strings/string_util.h"
#include "content/public/renderer/chrome_object_extensions_utils.h"
#include "content/public/renderer/render_frame.h"
#include "gin/arguments.h"
#include "gin/object_template_builder.h"
#include "services/service_manager/public/cpp/interface_provider.h"
#include "third_party/WebKit/public/web/WebFrame.h"
#include "third_party/WebKit/public/web/WebKit.h"
#include "third_party/WebKit/public/web/WebLocalFrame.h"
#include "v8/include/v8.h"
namespace {
static const char kContextualSearchObjectName[] = "contextualSearch";
static const char kSetCaptionMethodName[] = "setCaption";
} // namespace
namespace contextual_search {
gin::WrapperInfo ContextualSearchWrapper::kWrapperInfo = {
gin::kEmbedderNativeGin};
// static
void ContextualSearchWrapper::Install(content::RenderFrame* render_frame) {
// NOTE: Installing new v8 functions that can access Chrome native code
// requires a security review! We did an exhaustive search for a better
// way to implement a communication channel between the page and Chrome,
// but found nothing better.
// TODO(donnd): use a better communication channel once that becomes
// available, e.g. navigator.connect API. See crbug.com/541683.
// TODO(donnd): refactor some of this boilerplate into a reusable
// method. This was cribbed from MemoryBenchmarkingExtension.
v8::Isolate* isolate = blink::mainThreadIsolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context =
render_frame->GetWebFrame()->mainWorldScriptContext();
if (context.IsEmpty())
return;
v8::Context::Scope context_scope(context);
gin::Handle<ContextualSearchWrapper> wrapper =
gin::CreateHandle(isolate, new ContextualSearchWrapper(render_frame));
if (wrapper.IsEmpty())
return;
v8::Local<v8::Object> chrome =
content::GetOrCreateChromeObject(isolate, context->Global());
chrome->Set(gin::StringToV8(isolate, kContextualSearchObjectName),
wrapper.ToV8());
}
ContextualSearchWrapper::ContextualSearchWrapper(
content::RenderFrame* render_frame)
: RenderFrameObserver(render_frame) {}
ContextualSearchWrapper::~ContextualSearchWrapper() {}
gin::ObjectTemplateBuilder ContextualSearchWrapper::GetObjectTemplateBuilder(
v8::Isolate* isolate) {
return gin::Wrappable<ContextualSearchWrapper>::GetObjectTemplateBuilder(
isolate)
.SetMethod(kSetCaptionMethodName, &ContextualSearchWrapper::SetCaption);
}
bool ContextualSearchWrapper::EnsureServiceConnected() {
if (render_frame() && (!contextual_search_js_api_service_ ||
!contextual_search_js_api_service_.is_bound())) {
render_frame()->GetRemoteInterfaces()->GetInterface(
&contextual_search_js_api_service_);
return true;
} else {
return false;
}
}
void ContextualSearchWrapper::OnDestruct() {}
void ContextualSearchWrapper::SetCaption(const std::string& caption,
bool does_answer) {
if (EnsureServiceConnected()) {
contextual_search_js_api_service_->HandleSetCaption(caption, does_answer);
}
}
} // namespace contextual_search
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