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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/android/jni_weak_ref.h"
#include <utility>
#include "base/android/jni_android.h"
using base::android::AttachCurrentThread;
JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef() : obj_(nullptr) {}
JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef(
const JavaObjectWeakGlobalRef& orig)
: obj_(nullptr) {
Assign(orig);
}
JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef(
JavaObjectWeakGlobalRef&& orig) noexcept
: obj_(orig.obj_) {
orig.obj_ = nullptr;
}
JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef(JNIEnv* env, jobject obj)
: obj_(env->NewWeakGlobalRef(obj)) {
}
JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef(
JNIEnv* env,
const base::android::JavaRef<jobject>& obj)
: obj_(env->NewWeakGlobalRef(obj.obj())) {
}
JavaObjectWeakGlobalRef::~JavaObjectWeakGlobalRef() {
reset();
}
void JavaObjectWeakGlobalRef::operator=(const JavaObjectWeakGlobalRef& rhs) {
Assign(rhs);
}
void JavaObjectWeakGlobalRef::operator=(JavaObjectWeakGlobalRef&& rhs) {
std::swap(obj_, rhs.obj_);
}
void JavaObjectWeakGlobalRef::reset() {
if (obj_) {
AttachCurrentThread()->DeleteWeakGlobalRef(obj_);
obj_ = nullptr;
}
}
base::android::ScopedJavaLocalRef<jobject>
JavaObjectWeakGlobalRef::get(JNIEnv* env) const {
return GetRealObject(env, obj_);
}
base::android::ScopedJavaLocalRef<jobject> GetRealObject(
JNIEnv* env, jweak obj) {
jobject real = nullptr;
if (obj)
real = env->NewLocalRef(obj);
return base::android::ScopedJavaLocalRef<jobject>(env, real);
}
void JavaObjectWeakGlobalRef::Assign(const JavaObjectWeakGlobalRef& other) {
if (&other == this)
return;
JNIEnv* env = AttachCurrentThread();
if (obj_)
env->DeleteWeakGlobalRef(obj_);
obj_ = other.obj_ ? env->NewWeakGlobalRef(other.obj_) : nullptr;
}
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