| // 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 "extensions/renderer/render_view_observer_natives.h" |
| |
| #include "content/public/renderer/render_view.h" |
| #include "content/public/renderer/render_view_observer.h" |
| #include "extensions/common/extension_api.h" |
| #include "extensions/renderer/script_context.h" |
| #include "third_party/WebKit/public/web/WebFrame.h" |
| #include "third_party/WebKit/public/web/WebScopedMicrotaskSuppression.h" |
| |
| namespace extensions { |
| |
| namespace { |
| |
| // Deletes itself when done. |
| class LoadWatcher : public content::RenderViewObserver { |
| public: |
| LoadWatcher(ScriptContext* context, |
| content::RenderView* view, |
| v8::Handle<v8::Function> cb) |
| : content::RenderViewObserver(view), context_(context), callback_(cb) {} |
| |
| virtual void DidCreateDocumentElement(blink::WebLocalFrame* frame) OVERRIDE { |
| CallbackAndDie(true); |
| } |
| |
| virtual void DidFailProvisionalLoad(blink::WebLocalFrame* frame, |
| const blink::WebURLError& error) |
| OVERRIDE { |
| CallbackAndDie(false); |
| } |
| |
| private: |
| void CallbackAndDie(bool succeeded) { |
| v8::Isolate* isolate = context_->isolate(); |
| v8::HandleScope handle_scope(isolate); |
| v8::Handle<v8::Value> args[] = {v8::Boolean::New(isolate, succeeded)}; |
| context_->CallFunction(callback_.NewHandle(isolate), 1, args); |
| delete this; |
| } |
| |
| ScriptContext* context_; |
| ScopedPersistent<v8::Function> callback_; |
| DISALLOW_COPY_AND_ASSIGN(LoadWatcher); |
| }; |
| } // namespace |
| |
| RenderViewObserverNatives::RenderViewObserverNatives(ScriptContext* context) |
| : ObjectBackedNativeHandler(context) { |
| RouteFunction("OnDocumentElementCreated", |
| base::Bind(&RenderViewObserverNatives::OnDocumentElementCreated, |
| base::Unretained(this))); |
| } |
| |
| void RenderViewObserverNatives::OnDocumentElementCreated( |
| const v8::FunctionCallbackInfo<v8::Value>& args) { |
| CHECK(args.Length() == 2); |
| CHECK(args[0]->IsInt32()); |
| CHECK(args[1]->IsFunction()); |
| |
| int view_id = args[0]->Int32Value(); |
| |
| content::RenderView* view = content::RenderView::FromRoutingID(view_id); |
| if (!view) { |
| LOG(WARNING) << "No render view found to register LoadWatcher."; |
| return; |
| } |
| |
| new LoadWatcher(context(), view, args[1].As<v8::Function>()); |
| |
| args.GetReturnValue().Set(true); |
| } |
| |
| } // namespace extensions |