1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "InputApplicationHandle"
#include <nativehelper/JNIHelp.h>
#include "core_jni_helpers.h"
#include "jni.h"
#include <android_runtime/AndroidRuntime.h>
#include <utils/threads.h>
#include "android_hardware_input_InputApplicationHandle.h"
#include "android_util_Binder.h"
namespace android {
static struct {
jclass clazz;
jmethodID ctor;
jfieldID ptr;
jfieldID name;
jfieldID dispatchingTimeoutMillis;
jfieldID token;
} gInputApplicationHandleClassInfo;
static Mutex gHandleMutex;
// --- NativeInputApplicationHandle ---
NativeInputApplicationHandle::NativeInputApplicationHandle(jweak objWeak) :
mObjWeak(objWeak) {
}
NativeInputApplicationHandle::~NativeInputApplicationHandle() {
JNIEnv* env = AndroidRuntime::getJNIEnv();
env->DeleteWeakGlobalRef(mObjWeak);
}
jobject NativeInputApplicationHandle::getInputApplicationHandleObjLocalRef(JNIEnv* env) {
return env->NewLocalRef(mObjWeak);
}
bool NativeInputApplicationHandle::updateInfo() {
JNIEnv* env = AndroidRuntime::getJNIEnv();
ScopedLocalRef<jobject> obj(env, env->NewLocalRef(mObjWeak));
if (!obj.get()) {
return false;
}
if (mInfo.token.get() != nullptr) {
// The java fields are immutable, so it doesn't need to update again.
return true;
}
mInfo.name = getStringField(env, obj.get(), gInputApplicationHandleClassInfo.name, "<null>");
mInfo.dispatchingTimeoutMillis =
env->GetLongField(obj.get(), gInputApplicationHandleClassInfo.dispatchingTimeoutMillis);
ScopedLocalRef<jobject> tokenObj(env, env->GetObjectField(obj.get(),
gInputApplicationHandleClassInfo.token));
if (tokenObj.get()) {
mInfo.token = ibinderForJavaObject(env, tokenObj.get());
} else {
mInfo.token.clear();
}
return mInfo.token.get() != nullptr;
}
// --- Global functions ---
std::shared_ptr<InputApplicationHandle> android_view_InputApplicationHandle_getHandle(
JNIEnv* env, jobject inputApplicationHandleObj) {
if (!inputApplicationHandleObj) {
return NULL;
}
AutoMutex _l(gHandleMutex);
jlong ptr = env->GetLongField(inputApplicationHandleObj, gInputApplicationHandleClassInfo.ptr);
std::shared_ptr<NativeInputApplicationHandle>* handle;
if (ptr) {
handle = reinterpret_cast<std::shared_ptr<NativeInputApplicationHandle>*>(ptr);
} else {
jweak objWeak = env->NewWeakGlobalRef(inputApplicationHandleObj);
handle = new std::shared_ptr(std::make_shared<NativeInputApplicationHandle>(objWeak));
env->SetLongField(inputApplicationHandleObj, gInputApplicationHandleClassInfo.ptr,
reinterpret_cast<jlong>(handle));
}
return *handle;
}
jobject android_view_InputApplicationHandle_fromInputApplicationInfo(
JNIEnv* env, gui::InputApplicationInfo inputApplicationInfo) {
jobject binderObject = javaObjectForIBinder(env, inputApplicationInfo.token);
ScopedLocalRef<jstring> name(env, env->NewStringUTF(inputApplicationInfo.name.data()));
return env->NewObject(gInputApplicationHandleClassInfo.clazz,
gInputApplicationHandleClassInfo.ctor, binderObject, name.get(),
inputApplicationInfo.dispatchingTimeoutMillis);
}
// --- JNI ---
static void android_view_InputApplicationHandle_nativeDispose(JNIEnv* env, jobject obj) {
AutoMutex _l(gHandleMutex);
jlong ptr = env->GetLongField(obj, gInputApplicationHandleClassInfo.ptr);
if (ptr) {
env->SetLongField(obj, gInputApplicationHandleClassInfo.ptr, 0);
std::shared_ptr<NativeInputApplicationHandle>* handle =
reinterpret_cast<std::shared_ptr<NativeInputApplicationHandle>*>(ptr);
delete handle;
}
}
static const JNINativeMethod gInputApplicationHandleMethods[] = {
/* name, signature, funcPtr */
{ "nativeDispose", "()V",
(void*) android_view_InputApplicationHandle_nativeDispose },
};
#define FIND_CLASS(var, className) \
var = env->FindClass(className); \
LOG_FATAL_IF(! (var), "Unable to find class " className);
#define GET_FIELD_ID(var, clazz, fieldName, fieldDescriptor) \
var = env->GetFieldID(clazz, fieldName, fieldDescriptor); \
LOG_FATAL_IF(! (var), "Unable to find field " fieldName);
#define GET_METHOD_ID(var, clazz, methodName, methodSignature) \
var = env->GetMethodID(clazz, methodName, methodSignature); \
LOG_ALWAYS_FATAL_IF(!(var), "Unable to find method " methodName);
int register_android_view_InputApplicationHandle(JNIEnv* env) {
int res = jniRegisterNativeMethods(env, "android/view/InputApplicationHandle",
gInputApplicationHandleMethods, NELEM(gInputApplicationHandleMethods));
(void) res; // Faked use when LOG_NDEBUG.
LOG_FATAL_IF(res < 0, "Unable to register native methods.");
jclass clazz;
FIND_CLASS(clazz, "android/view/InputApplicationHandle");
gInputApplicationHandleClassInfo.clazz = MakeGlobalRefOrDie(env, clazz);
GET_METHOD_ID(gInputApplicationHandleClassInfo.ctor, clazz, "<init>",
"(Landroid/os/IBinder;Ljava/lang/String;J)V");
GET_FIELD_ID(gInputApplicationHandleClassInfo.ptr, clazz,
"ptr", "J");
GET_FIELD_ID(gInputApplicationHandleClassInfo.name, clazz,
"name", "Ljava/lang/String;");
GET_FIELD_ID(gInputApplicationHandleClassInfo.dispatchingTimeoutMillis, clazz,
"dispatchingTimeoutMillis", "J");
GET_FIELD_ID(gInputApplicationHandleClassInfo.token, clazz,
"token", "Landroid/os/IBinder;");
return 0;
}
} /* namespace android */
|
