blob: 468d44b3a4307a8b19c91fe013e58d3edc8d4faa [file] [log] [blame]
// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "flutter/fml/platform/android/jni_weak_ref.h"
#include "flutter/fml/logging.h"
#include "flutter/fml/platform/android/jni_util.h"
namespace fml {
namespace jni {
JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef() : obj_(NULL) {}
JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef(
const JavaObjectWeakGlobalRef& orig)
: obj_(NULL) {
Assign(orig);
}
JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef(JNIEnv* env, jobject obj)
: obj_(env->NewWeakGlobalRef(obj)) {
FML_DCHECK(obj_);
}
JavaObjectWeakGlobalRef::~JavaObjectWeakGlobalRef() {
reset();
}
void JavaObjectWeakGlobalRef::operator=(const JavaObjectWeakGlobalRef& rhs) {
Assign(rhs);
}
void JavaObjectWeakGlobalRef::reset() {
if (obj_) {
AttachCurrentThread()->DeleteWeakGlobalRef(obj_);
obj_ = NULL;
}
}
ScopedJavaLocalRef<jobject> JavaObjectWeakGlobalRef::get(JNIEnv* env) const {
return GetRealObject(env, obj_);
}
ScopedJavaLocalRef<jobject> GetRealObject(JNIEnv* env, jweak obj) {
jobject real = NULL;
if (obj) {
real = env->NewLocalRef(obj);
if (!real) {
FML_DLOG(ERROR) << "The real object has been deleted!";
}
}
return 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_) : NULL;
}
} // namespace jni
} // namespace fml