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      1 // Copyright 2014 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 "extensions/renderer/document_custom_bindings.h"
      6 
      7 #include <string>
      8 
      9 #include "base/bind.h"
     10 #include "extensions/renderer/script_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(ScriptContext* context)
     18     : ObjectBackedNativeHandler(context) {
     19   RouteFunction("RegisterElement",
     20                 base::Bind(&DocumentCustomBindings::RegisterElement,
     21                            base::Unretained(this)));
     22 }
     23 
     24 // Attach an event name to an object.
     25 void DocumentCustomBindings::RegisterElement(
     26     const v8::FunctionCallbackInfo<v8::Value>& args) {
     27   if (args.Length() != 2 || !args[0]->IsString() || !args[1]->IsObject()) {
     28     NOTREACHED();
     29     return;
     30   }
     31 
     32   std::string element_name(*v8::String::Utf8Value(args[0]));
     33   v8::Local<v8::Object> options = args[1]->ToObject();
     34 
     35   blink::WebExceptionCode ec = 0;
     36   blink::WebDocument document = context()->web_frame()->document();
     37   v8::Handle<v8::Value> constructor = document.registerEmbedderCustomElement(
     38       blink::WebString::fromUTF8(element_name), options, ec);
     39   args.GetReturnValue().Set(constructor);
     40 }
     41 
     42 }  // namespace extensions
     43