80 lines
2.1 KiB
C++
80 lines
2.1 KiB
C++
// Copyright 2013 The Chromium Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE.chromium file.
|
|
|
|
#include "native_mate/wrappable.h"
|
|
|
|
#include "base/logging.h"
|
|
#include "native_mate/dictionary.h"
|
|
#include "native_mate/object_template_builder.h"
|
|
|
|
namespace mate {
|
|
|
|
WrappableBase::WrappableBase()
|
|
: isolate_(nullptr), high_memory_(false) {
|
|
}
|
|
|
|
WrappableBase::~WrappableBase() {
|
|
if (wrapper_.IsEmpty())
|
|
return;
|
|
|
|
GetWrapper()->SetAlignedPointerInInternalField(0, nullptr);
|
|
wrapper_.ClearWeak();
|
|
wrapper_.Reset();
|
|
}
|
|
|
|
v8::Local<v8::Object> WrappableBase::GetWrapper() {
|
|
CHECK(!wrapper_.IsEmpty());
|
|
return v8::Local<v8::Object>::New(isolate_, wrapper_);
|
|
}
|
|
|
|
void WrappableBase::InitWith(v8::Isolate* isolate,
|
|
v8::Local<v8::Object> wrapper) {
|
|
CHECK(wrapper_.IsEmpty());
|
|
isolate_ = isolate;
|
|
wrapper->SetAlignedPointerInInternalField(0, this);
|
|
wrapper_.Reset(isolate, wrapper);
|
|
wrapper_.SetWeak(this, FirstWeakCallback, v8::WeakCallbackType::kParameter);
|
|
wrapper_.MarkIndependent();
|
|
|
|
// Call object._init if we have one.
|
|
v8::Local<v8::Function> init;
|
|
if (Dictionary(isolate, wrapper).Get("_init", &init))
|
|
init->Call(wrapper, 0, nullptr);
|
|
|
|
AfterInit(isolate);
|
|
}
|
|
|
|
// static
|
|
void WrappableBase::FirstWeakCallback(
|
|
const v8::WeakCallbackInfo<WrappableBase>& data) {
|
|
WrappableBase* wrappable = data.GetParameter();
|
|
wrappable->wrapper_.Reset();
|
|
if (wrappable->high_memory_) {
|
|
delete wrappable;
|
|
} else {
|
|
data.SetSecondPassCallback(SecondWeakCallback);
|
|
}
|
|
}
|
|
|
|
// static
|
|
void WrappableBase::SecondWeakCallback(
|
|
const v8::WeakCallbackInfo<WrappableBase>& data) {
|
|
WrappableBase* wrappable = data.GetParameter();
|
|
delete wrappable;
|
|
}
|
|
|
|
namespace internal {
|
|
|
|
void* FromV8Impl(v8::Isolate* isolate, v8::Local<v8::Value> val) {
|
|
if (!val->IsObject())
|
|
return nullptr;
|
|
v8::Local<v8::Object> obj = v8::Local<v8::Object>::Cast(val);
|
|
if (obj->InternalFieldCount() != 1)
|
|
return nullptr;
|
|
return obj->GetAlignedPointerFromInternalField(0);
|
|
}
|
|
|
|
} // namespace internal
|
|
|
|
} // namespace mate
|