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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 #ifndef CONTENT_SHELL_BINDING_HELPERS_H_
      6 #define CONTENT_SHELL_BINDING_HELPERS_H_
      7 
      8 #include <string>
      9 #include <vector>
     10 
     11 #include "base/memory/scoped_ptr.h"
     12 #include "gin/handle.h"
     13 #include "gin/wrappable.h"
     14 #include "third_party/WebKit/public/web/WebFrame.h"
     15 #include "third_party/WebKit/public/web/WebKit.h"
     16 
     17 namespace content {
     18 
     19 template<class WrappedClass>
     20 void InstallAsWindowProperties(WrappedClass* wrapped,
     21                                blink::WebFrame* frame,
     22                                const std::vector<std::string>& names) {
     23   v8::Isolate* isolate = blink::mainThreadIsolate();
     24   v8::HandleScope handle_scope(isolate);
     25   v8::Handle<v8::Context> context = frame->mainWorldScriptContext();
     26   if (context.IsEmpty())
     27     return;
     28 
     29   v8::Context::Scope context_scope(context);
     30 
     31   gin::Handle<WrappedClass> bindings = gin::CreateHandle(isolate, wrapped);
     32   if (bindings.IsEmpty())
     33     return;
     34   v8::Handle<v8::Object> global = context->Global();
     35   v8::Handle<v8::Value> v8_bindings = bindings.ToV8();
     36   for (size_t i = 0; i < names.size(); ++i)
     37     global->Set(gin::StringToV8(isolate, names[i].c_str()), v8_bindings);
     38 }
     39 
     40 }  // namespace content
     41 
     42 #endif  // CONTENT_SHELL_BINDING_HELPERS_DISPATCHER_H_
     43