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/*
* Copyright (C) 2012 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "bindings/core/v8/V8DOMConfiguration.h"
#include "bindings/core/v8/V8ObjectConstructor.h"
#include "platform/TraceEvent.h"
namespace blink {
void V8DOMConfiguration::installAttributes(v8::Isolate* isolate, v8::Handle<v8::ObjectTemplate> instanceTemplate, v8::Handle<v8::ObjectTemplate> prototype, const AttributeConfiguration* attributes, size_t attributeCount)
{
for (size_t i = 0; i < attributeCount; ++i)
installAttribute(instanceTemplate, prototype, attributes[i], isolate);
}
void V8DOMConfiguration::installAccessors(v8::Isolate* isolate, v8::Handle<v8::ObjectTemplate> prototype, v8::Handle<v8::Signature> signature, const AccessorConfiguration* accessors, size_t accessorCount)
{
DOMWrapperWorld& world = DOMWrapperWorld::current(isolate);
for (size_t i = 0; i < accessorCount; ++i) {
if (accessors[i].exposeConfiguration == OnlyExposedToPrivateScript && !world.isPrivateScriptIsolatedWorld())
continue;
v8::FunctionCallback getterCallback = accessors[i].getter;
v8::FunctionCallback setterCallback = accessors[i].setter;
if (world.isMainWorld()) {
if (accessors[i].getterForMainWorld)
getterCallback = accessors[i].getterForMainWorld;
if (accessors[i].setterForMainWorld)
setterCallback = accessors[i].setterForMainWorld;
}
v8::Local<v8::FunctionTemplate> getter;
if (getterCallback) {
getter = v8::FunctionTemplate::New(isolate, getterCallback, v8::External::New(isolate, const_cast<WrapperTypeInfo*>(accessors[i].data)), signature, 0);
getter->RemovePrototype();
}
v8::Local<v8::FunctionTemplate> setter;
if (setterCallback) {
setter = v8::FunctionTemplate::New(isolate, setterCallback, v8::External::New(isolate, const_cast<WrapperTypeInfo*>(accessors[i].data)), signature, 1);
setter->RemovePrototype();
}
prototype->SetAccessorProperty(v8AtomicString(isolate, accessors[i].name), getter, setter, accessors[i].attribute, accessors[i].settings);
}
}
// Constant installation
//
// installConstants() is be used for simple constants. It installs constants
// using v8::Template::Set(), which results in a property that is much faster to
// access from scripts.
// installConstant() is used when some C++ code needs to be executed when the
// constant is accessed, e.g. to handle deprecation or measuring usage. The
// property appears the same to scripts, but is slower to access.
void V8DOMConfiguration::installConstants(v8::Isolate* isolate, v8::Handle<v8::FunctionTemplate> functionDescriptor, v8::Handle<v8::ObjectTemplate> prototype, const ConstantConfiguration* constants, size_t constantCount)
{
for (size_t i = 0; i < constantCount; ++i) {
const ConstantConfiguration* constant = &constants[i];
v8::Handle<v8::String> constantName = v8AtomicString(isolate, constant->name);
switch (constant->type) {
case ConstantTypeShort:
case ConstantTypeLong:
case ConstantTypeUnsignedShort:
functionDescriptor->Set(constantName, v8::Integer::New(isolate, constant->ivalue), static_cast<v8::PropertyAttribute>(v8::ReadOnly | v8::DontDelete));
prototype->Set(constantName, v8::Integer::New(isolate, constant->ivalue), static_cast<v8::PropertyAttribute>(v8::ReadOnly | v8::DontDelete));
break;
case ConstantTypeUnsignedLong:
functionDescriptor->Set(constantName, v8::Integer::NewFromUnsigned(isolate, constant->ivalue), static_cast<v8::PropertyAttribute>(v8::ReadOnly | v8::DontDelete));
prototype->Set(constantName, v8::Integer::NewFromUnsigned(isolate, constant->ivalue), static_cast<v8::PropertyAttribute>(v8::ReadOnly | v8::DontDelete));
break;
case ConstantTypeFloat:
case ConstantTypeDouble:
functionDescriptor->Set(constantName, v8::Number::New(isolate, constant->dvalue), static_cast<v8::PropertyAttribute>(v8::ReadOnly | v8::DontDelete));
prototype->Set(constantName, v8::Number::New(isolate, constant->dvalue), static_cast<v8::PropertyAttribute>(v8::ReadOnly | v8::DontDelete));
break;
case ConstantTypeString:
functionDescriptor->Set(constantName, v8::String::NewFromUtf8(isolate, constant->svalue), static_cast<v8::PropertyAttribute>(v8::ReadOnly | v8::DontDelete));
prototype->Set(constantName, v8::String::NewFromUtf8(isolate, constant->svalue), static_cast<v8::PropertyAttribute>(v8::ReadOnly | v8::DontDelete));
break;
default:
ASSERT_NOT_REACHED();
}
}
}
void V8DOMConfiguration::installConstant(v8::Isolate* isolate, v8::Handle<v8::FunctionTemplate> functionDescriptor, v8::Handle<v8::ObjectTemplate> prototype, const char* name, v8::AccessorGetterCallback getter)
{
v8::Handle<v8::String> constantName = v8AtomicString(isolate, name);
functionDescriptor->SetNativeDataProperty(constantName, getter, 0, v8::Handle<v8::Value>(), static_cast<v8::PropertyAttribute>(v8::ReadOnly | v8::DontDelete));
prototype->SetNativeDataProperty(constantName, getter, 0, v8::Handle<v8::Value>(), static_cast<v8::PropertyAttribute>(v8::ReadOnly | v8::DontDelete));
}
void V8DOMConfiguration::installMethods(v8::Isolate* isolate, v8::Handle<v8::ObjectTemplate> prototype, v8::Handle<v8::Signature> signature, v8::PropertyAttribute attributes, const MethodConfiguration* callbacks, size_t callbackCount)
{
for (size_t i = 0; i < callbackCount; ++i)
installMethod(prototype, signature, attributes, callbacks[i], isolate);
}
v8::Handle<v8::FunctionTemplate> V8DOMConfiguration::functionTemplateForCallback(v8::Isolate* isolate, v8::Handle<v8::Signature> signature, v8::FunctionCallback callback, int length)
{
v8::Local<v8::FunctionTemplate> functionTemplate = v8::FunctionTemplate::New(isolate, callback, v8Undefined(), signature, length);
functionTemplate->RemovePrototype();
return functionTemplate;
}
v8::Local<v8::Signature> V8DOMConfiguration::installDOMClassTemplate(v8::Isolate* isolate, v8::Local<v8::FunctionTemplate> functionDescriptor, const char* interfaceName, v8::Handle<v8::FunctionTemplate> parentClass, size_t fieldCount,
const AttributeConfiguration* attributes, size_t attributeCount,
const AccessorConfiguration* accessors, size_t accessorCount,
const MethodConfiguration* callbacks, size_t callbackCount)
{
functionDescriptor->SetClassName(v8AtomicString(isolate, interfaceName));
v8::Local<v8::ObjectTemplate> instanceTemplate = functionDescriptor->InstanceTemplate();
instanceTemplate->SetInternalFieldCount(fieldCount);
if (!parentClass.IsEmpty()) {
functionDescriptor->Inherit(parentClass);
// Marks the prototype object as one of native-backed objects.
// This is needed since bug 110436 asks WebKit to tell native-initiated prototypes from pure-JS ones.
// This doesn't mark kinds "root" classes like Node, where setting this changes prototype chain structure.
v8::Local<v8::ObjectTemplate> prototype = functionDescriptor->PrototypeTemplate();
prototype->SetInternalFieldCount(v8PrototypeInternalFieldcount);
}
v8::Local<v8::Signature> defaultSignature = v8::Signature::New(isolate, functionDescriptor);
if (attributeCount)
installAttributes(isolate, instanceTemplate, functionDescriptor->PrototypeTemplate(), attributes, attributeCount);
if (accessorCount)
installAccessors(isolate, functionDescriptor->PrototypeTemplate(), defaultSignature, accessors, accessorCount);
if (callbackCount)
installMethods(isolate, functionDescriptor->PrototypeTemplate(), defaultSignature, static_cast<v8::PropertyAttribute>(v8::DontDelete), callbacks, callbackCount);
return defaultSignature;
}
v8::Handle<v8::FunctionTemplate> V8DOMConfiguration::domClassTemplate(v8::Isolate* isolate, WrapperTypeInfo* wrapperTypeInfo, void (*configureDOMClassTemplate)(v8::Local<v8::FunctionTemplate>, v8::Isolate*))
{
V8PerIsolateData* data = V8PerIsolateData::from(isolate);
v8::Local<v8::FunctionTemplate> result = data->existingDOMTemplate(wrapperTypeInfo);
if (!result.IsEmpty())
return result;
TRACE_EVENT_SCOPED_SAMPLING_STATE("blink", "BuildDOMTemplate");
result = v8::FunctionTemplate::New(isolate, V8ObjectConstructor::isValidConstructorMode);
configureDOMClassTemplate(result, isolate);
data->setDOMTemplate(wrapperTypeInfo, result);
return result;
}
} // namespace blink
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