Example with Chromium Embedded Framework (CEF) on how to create an object in C++ and make it accessible via Javascript.
console.inof(api)
Object {ready: true, version: "psql.0.0.1", info: Object, getVersion: function}
void ExtractEngineApp::OnContextCreated(
CefRefPtr browser,
CefRefPtr frame,
CefRefPtr context)
{
auto info = CefV8Value::CreateObject(NULL, NULL);
info->SetValue("major", CefV8Value::CreateString("0"), V8_PROPERTY_ATTRIBUTE_READONLY);
info->SetValue("minor", CefV8Value::CreateString("1"), V8_PROPERTY_ATTRIBUTE_READONLY);
auto global = context->GetGlobal();
auto api = CefV8Value::CreateObject(NULL, NULL);
global->SetValue("api", api, V8_PROPERTY_ATTRIBUTE_NONE);
auto fun = CefV8Value::CreateFunction("getVersion", new engine:: PhantomExtensionHandler(this));
api->SetValue("getVersion", fun, V8_PROPERTY_ATTRIBUTE_NONE);
// Readonly properties
api->SetValue("ready", CefV8Value::CreateBool(true), V8_PROPERTY_ATTRIBUTE_READONLY);
api->SetValue("version", CefV8Value::CreateString("psql.0.0.1"), V8_PROPERTY_ATTRIBUTE_READONLY);
// Readonly Object access
api->SetValue("info", info, V8_PROPERTY_ATTRIBUTE_READONLY);
}
class PhantomExtensionHandler : public CefV8Handler
{
public:
explicit PhantomExtensionHandler(CefRefPtr client_app)
: client_app(client_app)
, messageId(0)
{
}
virtual bool Execute(const CefString& name,
CefRefPtr object,
const CefV8ValueList& arguments,
CefRefPtr& retval,
CefString& exception)
{
if (name == "getVersion")
{
retval = CefV8Value::CreateString("Version(SemVer) # 0.0.1");
}
return true;
}
private:
CefRefPtr client_app;
int32 messageId;
IMPLEMENT_REFCOUNTING(PhantomExtensionHandler);
};