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      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.
      4 
      5 #include "chrome/renderer/extensions/document_custom_bindings.h"
      6 
      7 #include <string>
      8 
      9 #include "base/bind.h"
     10 #include "chrome/renderer/extensions/chrome_v8_context.h"
     11 #include "third_party/WebKit/public/web/WebDocument.h"
     12 #include "third_party/WebKit/public/web/WebFrame.h"
     13 #include "v8/include/v8.h"
     14 
     15 namespace extensions {
     16 
     17 DocumentCustomBindings::DocumentCustomBindings(
     18     Dispatcher* dispatcher, ChromeV8Context* context)
     19     : ChromeV8Extension(dispatcher, context) {
     20   RouteFunction("RegisterElement",
     21       base::Bind(&DocumentCustomBindings::RegisterElement,
     22                  base::Unretained(this)));
     23 }
     24 
     25 // Attach an event name to an object.
     26 void DocumentCustomBindings::RegisterElement(
     27     const v8::FunctionCallbackInfo<v8::Value>& args) {
     28   if (args.Length() != 2 || !args[0]->IsString() || !args[1]->IsObject()) {
     29     NOTREACHED();
     30     return;
     31   }
     32 
     33   std::string element_name(*v8::String::Utf8Value(args[0]));
     34   v8::Local<v8::Object> options = args[1]->ToObject();
     35 
     36   blink::WebExceptionCode ec = 0;
     37   blink::WebDocument document = context()->web_frame()->document();
     38   v8::Handle<v8::Value> constructor =
     39       document.registerEmbedderCustomElement(
     40           blink::WebString::fromUTF8(element_name), options, ec);
     41   args.GetReturnValue().Set(constructor);
     42 }
     43 
     44 }  // namespace extensions
     45