Source/bindings/templates/interface.cpp

{% extends 'interface_base.cpp' %}


{##############################################################################}
{% macro attribute_configuration(attribute) %}
{"{{attribute.name}}", {{attribute.getter_callback_name}}, {{attribute.setter_callback_name}}, {{attribute.getter_callback_name_for_main_world}}, {{attribute.setter_callback_name_for_main_world}}, {{attribute.wrapper_type_info}}, static_cast<v8::AccessControl>({{attribute.access_control_list | join(' | ')}}), static_cast<v8::PropertyAttribute>({{attribute.property_attributes | join(' | ')}}), 0 /* on instance */}
{%- endmacro %}


{##############################################################################}
{% macro method_configuration(method) %}
{"{{method.name}}", {{interface_name}}V8Internal::{{method.name}}MethodCallback, 0, {{method.number_of_required_or_variadic_arguments}}}
{%- endmacro %}


{##############################################################################}
{% block constructor_getter %}
{% if has_constructor_attributes %}
static void {{interface_name}}ConstructorGetter(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
{
    v8::Handle<v8::Value> data = info.Data();
    ASSERT(data->IsExternal());
    V8PerContextData* perContextData = V8PerContextData::from(info.Holder()->CreationContext());
    if (!perContextData)
        return;
    v8SetReturnValue(info, perContextData->constructorForType(WrapperTypeInfo::unwrap(data)));
}

{% endif %}
{% endblock %}


{##############################################################################}
{% block replaceable_attribute_setter_and_callback %}
{% if has_replaceable_attributes or has_constructor_attributes %}
{# FIXME: rename to ForceSetAttributeOnThis, since also used for Constructors #}
static void {{interface_name}}ReplaceableAttributeSetter(v8::Local<v8::String> name, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
{
    info.This()->ForceSet(name, jsValue);
}

{# FIXME: rename to ForceSetAttributeOnThisCallback, since also used for Constructors #}
static void {{interface_name}}ReplaceableAttributeSetterCallback(v8::Local<v8::String> name, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
{
    {{interface_name}}V8Internal::{{interface_name}}ReplaceableAttributeSetter(name, jsValue, info);
}

{% endif %}
{% endblock %}


{##############################################################################}
{% block class_attributes %}
{# FIXME: rename to install_attributes and put into configure_class_template #}
{% if attributes %}
static const V8DOMConfiguration::AttributeConfiguration {{v8_class_name}}Attributes[] = {
    {% for attribute in attributes
       if not (attribute.runtime_enabled_function_name or
               attribute.per_context_enabled_function_name or
               attribute.is_static) %}
    {% filter conditional(attribute.conditional_string) %}
    {{attribute_configuration(attribute)}},
    {% endfilter %}
    {% endfor %}
};

{% endif %}
{% endblock %}


{##############################################################################}
{% block class_methods %}
{# FIXME: rename to install_methods and put into configure_class_template #}
{% if methods %}
static const V8DOMConfiguration::MethodConfiguration {{v8_class_name}}Methods[] = {
    {% for method in methods if not method.custom_signature %}
    {{method_configuration(method)}},
    {% endfor %}
};

{% endif %}
{% endblock %}


{##############################################################################}
{% block configure_class_template %}
{# FIXME: rename to install_dom_template and Install{{v8_class_name}}DOMTemplate #}
static v8::Handle<v8::FunctionTemplate> Configure{{v8_class_name}}Template(v8::Handle<v8::FunctionTemplate> desc, v8::Isolate* isolate, WrapperWorldType currentWorldType)
{
    desc->ReadOnlyPrototype();

    v8::Local<v8::Signature> defaultSignature;
    defaultSignature = V8DOMConfiguration::installDOMClassTemplate(desc, "{{interface_name}}", v8::Local<v8::FunctionTemplate>(), {{v8_class_name}}::internalFieldCount,
        {# Test needed as size 0 constant arrays are not allowed in VC++ #}
        {%+ if attributes %}{{v8_class_name}}Attributes, WTF_ARRAY_LENGTH({{v8_class_name}}Attributes){% else %}0, 0{% endif %},
        {%+ if methods %}{{v8_class_name}}Methods, WTF_ARRAY_LENGTH({{v8_class_name}}Methods){% else %}0, 0{% endif %},
        isolate, currentWorldType);
    UNUSED_PARAM(defaultSignature);
    {% if constants or has_runtime_enabled_attributes %}
    v8::Local<v8::ObjectTemplate> instance = desc->InstanceTemplate();
    v8::Local<v8::ObjectTemplate> proto = desc->PrototypeTemplate();
    UNUSED_PARAM(instance);
    UNUSED_PARAM(proto);
    {% endif %}
    {% for attribute in attributes if attribute.runtime_enabled_function_name %}
    {% filter conditional(attribute.conditional_string) %}
    if ({{attribute.runtime_enabled_function_name}}()) {
        static const V8DOMConfiguration::AttributeConfiguration attributeConfiguration =\
        {{attribute_configuration(attribute)}};
        V8DOMConfiguration::installAttribute(instance, proto, attributeConfiguration, isolate, currentWorldType);
    }
    {% endfilter %}
    {% endfor %}
    {% for method in methods if method.custom_signature %}

    // Custom Signature '{{method.name}}'
    const int {{method.name}}Argc = {{method.arguments | length}};
    v8::Handle<v8::FunctionTemplate> {{method.name}}Argv[{{method.name}}Argc] = { {{method.custom_signature}} };
    v8::Handle<v8::Signature> {{method.name}}Signature = v8::Signature::New(desc, {{method.name}}Argc, {{method.name}}Argv);
    proto->Set(v8::String::NewSymbol("{{method.name}}"), v8::FunctionTemplate::New({{interface_name}}V8Internal::{{method.name}}MethodCallback, v8Undefined(), {{method.name}}Signature, {{method.number_of_required_or_variadic_arguments}}));
    {% endfor %}
    {% for attribute in attributes if attribute.is_static %}
    desc->SetNativeDataProperty(v8::String::NewSymbol("{{attribute.name}}"), {{attribute.getter_callback_name}}, {{attribute.setter_callback_name}}, v8::External::New(0), static_cast<v8::PropertyAttribute>(v8::None), v8::Handle<v8::AccessorSignature>(), static_cast<v8::AccessControl>(v8::DEFAULT));
    {% endfor %}
    {% if constants %}
    {{install_constants() | indent}}
    {% endif %}

    // Custom toString template
    desc->Set(v8::String::NewSymbol("toString"), V8PerIsolateData::current()->toStringTemplate());
    return desc;
}

{% endblock %}


{######################################}
{% macro install_constants() %}
{# FIXME: should use reflected_name instead of name #}
{# Normal (always enabled) constants #}
static const V8DOMConfiguration::ConstantConfiguration {{v8_class_name}}Constants[] = {
    {% for constant in constants if not constant.runtime_enabled_function_name %}
    {"{{constant.name}}", {{constant.value}}},
    {% endfor %}
};
V8DOMConfiguration::installConstants(desc, proto, {{v8_class_name}}Constants, WTF_ARRAY_LENGTH({{v8_class_name}}Constants), isolate);
{# Runtime-enabled constants #}
{% for constant in constants if constant.runtime_enabled_function_name %}
if ({{constant.runtime_enabled_function_name}}()) {
    static const V8DOMConfiguration::ConstantConfiguration constantConfiguration = {"{{constant.name}}", static_cast<signed int>({{constant.value}})};
    V8DOMConfiguration::installConstants(desc, proto, &constantConfiguration, 1, isolate);
}
{% endfor %}
{# Check constants #}
{% if not do_not_check_constants %}
{% for constant in constants %}
COMPILE_ASSERT({{constant.value}} == {{cpp_class_name}}::{{constant.reflected_name}}, TheValueOf{{cpp_class_name}}_{{constant.reflected_name}}DoesntMatchWithImplementation);
{% endfor %}
{% endif %}
{% endmacro %}


{##############################################################################}
{% block get_template %}
{# FIXME: rename to get_dom_template and GetDOMTemplate #}
v8::Handle<v8::FunctionTemplate> {{v8_class_name}}::GetTemplate(v8::Isolate* isolate, WrapperWorldType currentWorldType)
{
    V8PerIsolateData* data = V8PerIsolateData::from(isolate);
    V8PerIsolateData::TemplateMap::iterator result = data->templateMap(currentWorldType).find(&wrapperTypeInfo);
    if (result != data->templateMap(currentWorldType).end())
        return result->value.newLocal(isolate);

    TRACE_EVENT_SCOPED_SAMPLING_STATE("Blink", "BuildDOMTemplate");
    v8::HandleScope handleScope(isolate);
    v8::Handle<v8::FunctionTemplate> templ =
        Configure{{v8_class_name}}Template(data->rawTemplate(&wrapperTypeInfo, currentWorldType), isolate, currentWorldType);
    data->templateMap(currentWorldType).add(&wrapperTypeInfo, UnsafePersistent<v8::FunctionTemplate>(isolate, templ));
    return handleScope.Close(templ);
}

{% endblock %}


{##############################################################################}
{% block has_instance_and_has_instance_in_any_world %}
bool {{v8_class_name}}::HasInstance(v8::Handle<v8::Value> jsValue, v8::Isolate* isolate, WrapperWorldType currentWorldType)
{
    return V8PerIsolateData::from(isolate)->hasInstance(&wrapperTypeInfo, jsValue, currentWorldType);
}

bool {{v8_class_name}}::HasInstanceInAnyWorld(v8::Handle<v8::Value> jsValue, v8::Isolate* isolate)
{
    return V8PerIsolateData::from(isolate)->hasInstance(&wrapperTypeInfo, jsValue, MainWorld)
        || V8PerIsolateData::from(isolate)->hasInstance(&wrapperTypeInfo, jsValue, IsolatedWorld)
        || V8PerIsolateData::from(isolate)->hasInstance(&wrapperTypeInfo, jsValue, WorkerWorld);
}

{% endblock %}


{##############################################################################}
{% block install_per_context_attributes %}
{% if has_per_context_enabled_attributes %}
void {{v8_class_name}}::installPerContextEnabledProperties(v8::Handle<v8::Object> instance, {{cpp_class_name}}* impl, v8::Isolate* isolate)
{
    v8::Local<v8::Object> proto = v8::Local<v8::Object>::Cast(instance->GetPrototype());
    {% for attribute in attributes if attribute.per_context_enabled_function_name %}
    if ({{attribute.per_context_enabled_function_name}}(impl->document())) {
        static const V8DOMConfiguration::AttributeConfiguration attributeConfiguration =\
        {{attribute_configuration(attribute)}};
        V8DOMConfiguration::installAttribute(instance, proto, attributeConfiguration, isolate);
    }
    {% endfor %}
}

{% endif %}
{% endblock %}


{##############################################################################}
{% block create_wrapper_and_deref_object %}
v8::Handle<v8::Object> {{v8_class_name}}::createWrapper(PassRefPtr<{{cpp_class_name}}> impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
{
    ASSERT(impl);
    ASSERT(!DOMDataStore::containsWrapper<{{v8_class_name}}>(impl.get(), isolate));
    if (ScriptWrappable::wrapperCanBeStoredInObject(impl.get())) {
        const WrapperTypeInfo* actualInfo = ScriptWrappable::getTypeInfoFromObject(impl.get());
        // Might be a XXXConstructor::wrapperTypeInfo instead of an XXX::wrapperTypeInfo. These will both have
        // the same object de-ref functions, though, so use that as the basis of the check.
        RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(actualInfo->derefObjectFunction == wrapperTypeInfo.derefObjectFunction);
    }

    v8::Handle<v8::Object> wrapper = V8DOMWrapper::createWrapper(creationContext, &wrapperTypeInfo, toInternalPointer(impl.get()), isolate);
    if (UNLIKELY(wrapper.IsEmpty()))
        return wrapper;

    installPerContextEnabledProperties(wrapper, impl.get(), isolate);
    V8DOMWrapper::associateObjectWithWrapper<{{v8_class_name}}>(impl, &wrapperTypeInfo, wrapper, isolate, WrapperConfiguration::Independent);
    return wrapper;
}

void {{v8_class_name}}::derefObject(void* object)
{
    fromInternalPointer(object)->deref();
}

{% endblock %}