mirror of https://github.com/electron/electron
91 lines
2.5 KiB
C++
91 lines
2.5 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 "shell/common/gin_helper/wrappable.h"
|
|
|
|
#include "shell/common/gin_helper/dictionary.h"
|
|
#include "v8/include/v8-function.h"
|
|
|
|
namespace gin_helper {
|
|
|
|
WrappableBase::WrappableBase() = default;
|
|
|
|
WrappableBase::~WrappableBase() {
|
|
if (wrapper_.IsEmpty())
|
|
return;
|
|
|
|
v8::HandleScope scope(isolate());
|
|
GetWrapper()->SetAlignedPointerInInternalField(0, nullptr);
|
|
wrapper_.ClearWeak();
|
|
wrapper_.Reset();
|
|
}
|
|
|
|
v8::Local<v8::Object> WrappableBase::GetWrapper() const {
|
|
if (!wrapper_.IsEmpty())
|
|
return v8::Local<v8::Object>::New(isolate_, wrapper_);
|
|
else
|
|
return v8::Local<v8::Object>();
|
|
}
|
|
|
|
v8::MaybeLocal<v8::Object> WrappableBase::GetWrapper(
|
|
v8::Isolate* isolate) const {
|
|
if (!wrapper_.IsEmpty())
|
|
return v8::MaybeLocal<v8::Object>(
|
|
v8::Local<v8::Object>::New(isolate, wrapper_));
|
|
else
|
|
return v8::MaybeLocal<v8::Object>();
|
|
}
|
|
|
|
void WrappableBase::InitWithArgs(gin::Arguments* args) {
|
|
v8::Local<v8::Object> holder;
|
|
args->GetHolder(&holder);
|
|
InitWith(args->isolate(), holder);
|
|
}
|
|
|
|
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::kInternalFields);
|
|
|
|
// Call object._init if we have one.
|
|
v8::Local<v8::Function> init;
|
|
if (Dictionary(isolate, wrapper).Get("_init", &init))
|
|
init->Call(isolate->GetCurrentContext(), wrapper, 0, nullptr).IsEmpty();
|
|
}
|
|
|
|
// static
|
|
void WrappableBase::FirstWeakCallback(
|
|
const v8::WeakCallbackInfo<WrappableBase>& data) {
|
|
auto* wrappable = static_cast<WrappableBase*>(data.GetInternalField(0));
|
|
if (wrappable) {
|
|
wrappable->wrapper_.Reset();
|
|
data.SetSecondPassCallback(SecondWeakCallback);
|
|
}
|
|
}
|
|
|
|
// static
|
|
void WrappableBase::SecondWeakCallback(
|
|
const v8::WeakCallbackInfo<WrappableBase>& data) {
|
|
delete static_cast<WrappableBase*>(data.GetInternalField(0));
|
|
}
|
|
|
|
namespace internal {
|
|
|
|
void* FromV8Impl(v8::Isolate* isolate, v8::Local<v8::Value> val) {
|
|
if (!val->IsObject())
|
|
return nullptr;
|
|
v8::Local<v8::Object> obj = val.As<v8::Object>();
|
|
if (obj->InternalFieldCount() != 1)
|
|
return nullptr;
|
|
return obj->GetAlignedPointerFromInternalField(0);
|
|
}
|
|
|
|
} // namespace internal
|
|
|
|
} // namespace gin_helper
|