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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "base/android/jni_weak_ref.h" | 5 #include "base/android/jni_weak_ref.h" |
6 | 6 |
| 7 #include <utility> |
| 8 |
7 #include "base/android/jni_android.h" | 9 #include "base/android/jni_android.h" |
8 #include "base/logging.h" | 10 #include "base/logging.h" |
9 | 11 |
10 using base::android::AttachCurrentThread; | 12 using base::android::AttachCurrentThread; |
11 | 13 |
12 JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef() | 14 JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef() : obj_(nullptr) {} |
13 : obj_(NULL) { | |
14 } | |
15 | 15 |
16 JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef( | 16 JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef( |
17 const JavaObjectWeakGlobalRef& orig) | 17 const JavaObjectWeakGlobalRef& orig) |
18 : obj_(NULL) { | 18 : obj_(nullptr) { |
19 Assign(orig); | 19 Assign(orig); |
20 } | 20 } |
21 | 21 |
| 22 JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef(JavaObjectWeakGlobalRef&& orig) |
| 23 : obj_(orig.obj_) { |
| 24 orig.obj_ = nullptr; |
| 25 } |
| 26 |
22 JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef(JNIEnv* env, jobject obj) | 27 JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef(JNIEnv* env, jobject obj) |
23 : obj_(env->NewWeakGlobalRef(obj)) { | 28 : obj_(env->NewWeakGlobalRef(obj)) { |
24 DCHECK(obj_); | 29 DCHECK(obj_); |
25 } | 30 } |
26 | 31 |
| 32 JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef( |
| 33 JNIEnv* env, |
| 34 const base::android::JavaRef<jobject>& obj) |
| 35 : obj_(env->NewWeakGlobalRef(obj.obj())) { |
| 36 DCHECK(obj_); |
| 37 } |
| 38 |
27 JavaObjectWeakGlobalRef::~JavaObjectWeakGlobalRef() { | 39 JavaObjectWeakGlobalRef::~JavaObjectWeakGlobalRef() { |
28 reset(); | 40 reset(); |
29 } | 41 } |
30 | 42 |
31 void JavaObjectWeakGlobalRef::operator=(const JavaObjectWeakGlobalRef& rhs) { | 43 void JavaObjectWeakGlobalRef::operator=(const JavaObjectWeakGlobalRef& rhs) { |
32 Assign(rhs); | 44 Assign(rhs); |
33 } | 45 } |
34 | 46 |
| 47 void JavaObjectWeakGlobalRef::operator=(JavaObjectWeakGlobalRef&& rhs) { |
| 48 std::swap(obj_, rhs.obj_); |
| 49 } |
| 50 |
35 void JavaObjectWeakGlobalRef::reset() { | 51 void JavaObjectWeakGlobalRef::reset() { |
36 if (obj_) { | 52 if (obj_) { |
37 AttachCurrentThread()->DeleteWeakGlobalRef(obj_); | 53 AttachCurrentThread()->DeleteWeakGlobalRef(obj_); |
38 obj_ = NULL; | 54 obj_ = nullptr; |
39 } | 55 } |
40 } | 56 } |
41 | 57 |
42 base::android::ScopedJavaLocalRef<jobject> | 58 base::android::ScopedJavaLocalRef<jobject> |
43 JavaObjectWeakGlobalRef::get(JNIEnv* env) const { | 59 JavaObjectWeakGlobalRef::get(JNIEnv* env) const { |
44 return GetRealObject(env, obj_); | 60 return GetRealObject(env, obj_); |
45 } | 61 } |
46 | 62 |
47 base::android::ScopedJavaLocalRef<jobject> GetRealObject( | 63 base::android::ScopedJavaLocalRef<jobject> GetRealObject( |
48 JNIEnv* env, jweak obj) { | 64 JNIEnv* env, jweak obj) { |
49 jobject real = NULL; | 65 jobject real = nullptr; |
50 if (obj) | 66 if (obj) |
51 real = env->NewLocalRef(obj); | 67 real = env->NewLocalRef(obj); |
52 return base::android::ScopedJavaLocalRef<jobject>(env, real); | 68 return base::android::ScopedJavaLocalRef<jobject>(env, real); |
53 } | 69 } |
54 | 70 |
55 void JavaObjectWeakGlobalRef::Assign(const JavaObjectWeakGlobalRef& other) { | 71 void JavaObjectWeakGlobalRef::Assign(const JavaObjectWeakGlobalRef& other) { |
56 if (&other == this) | 72 if (&other == this) |
57 return; | 73 return; |
58 | 74 |
59 JNIEnv* env = AttachCurrentThread(); | 75 JNIEnv* env = AttachCurrentThread(); |
60 if (obj_) | 76 if (obj_) |
61 env->DeleteWeakGlobalRef(obj_); | 77 env->DeleteWeakGlobalRef(obj_); |
62 | 78 |
63 obj_ = other.obj_ ? env->NewWeakGlobalRef(other.obj_) : NULL; | 79 obj_ = other.obj_ ? env->NewWeakGlobalRef(other.obj_) : nullptr; |
64 } | 80 } |
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