1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "chrome/renderer/extensions/render_view_observer_natives.h"
7 #include "chrome/renderer/extensions/dispatcher.h"
8 #include "content/public/renderer/render_view.h"
9 #include "content/public/renderer/render_view_observer.h"
10 #include "extensions/common/extension_api.h"
11 #include "third_party/WebKit/public/web/WebFrame.h"
12 #include "third_party/WebKit/public/web/WebScopedMicrotaskSuppression.h"
14 namespace extensions {
18 // Deletes itself when done.
19 class LoadWatcher : public content::RenderViewObserver {
21 LoadWatcher(ChromeV8Context* context,
22 content::RenderView* view,
23 v8::Handle<v8::Function> cb)
24 : content::RenderViewObserver(view),
29 virtual void DidCreateDocumentElement(blink::WebFrame* frame) OVERRIDE {
33 virtual void DidFailProvisionalLoad(
34 blink::WebFrame* frame,
35 const blink::WebURLError& error) OVERRIDE {
36 CallbackAndDie(false);
40 void CallbackAndDie(bool succeeded) {
41 v8::Isolate* isolate = context_->isolate();
42 v8::HandleScope handle_scope(isolate);
43 v8::Handle<v8::Value> args[] = { v8::Boolean::New(isolate, succeeded) };
44 context_->CallFunction(callback_.NewHandle(isolate), 1, args);
48 ChromeV8Context* context_;
49 ScopedPersistent<v8::Function> callback_;
50 DISALLOW_COPY_AND_ASSIGN(LoadWatcher);
55 RenderViewObserverNatives::RenderViewObserverNatives(Dispatcher* dispatcher,
56 ChromeV8Context* context)
57 : ChromeV8Extension(dispatcher, context) {
58 RouteFunction("OnDocumentElementCreated",
59 base::Bind(&RenderViewObserverNatives::OnDocumentElementCreated,
60 base::Unretained(this)));
63 void RenderViewObserverNatives::OnDocumentElementCreated(
64 const v8::FunctionCallbackInfo<v8::Value>& args) {
65 CHECK(args.Length() == 2);
66 CHECK(args[0]->IsInt32());
67 CHECK(args[1]->IsFunction());
69 int view_id = args[0]->Int32Value();
71 content::RenderView* view = content::RenderView::FromRoutingID(view_id);
73 LOG(WARNING) << "No render view found to register LoadWatcher.";
77 new LoadWatcher(context(), view, args[1].As<v8::Function>());
79 args.GetReturnValue().Set(true);
82 } // namespace extensions