1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "KeyEvent-JNI"
18
19#include "JNIHelp.h"
20
21#include <android_runtime/AndroidRuntime.h>
22#include <android_runtime/Log.h>
23#include <utils/Log.h>
24#include <input/Input.h>
25#include <ScopedUtfChars.h>
26#include "android_view_KeyEvent.h"
27
28#include "core_jni_helpers.h"
29
30namespace android {
31
32// ----------------------------------------------------------------------------
33
34static struct {
35    jclass clazz;
36
37    jmethodID obtain;
38    jmethodID recycle;
39
40    jfieldID mDeviceId;
41    jfieldID mSource;
42    jfieldID mMetaState;
43    jfieldID mAction;
44    jfieldID mKeyCode;
45    jfieldID mScanCode;
46    jfieldID mRepeatCount;
47    jfieldID mFlags;
48    jfieldID mDownTime;
49    jfieldID mEventTime;
50    jfieldID mCharacters;
51} gKeyEventClassInfo;
52
53// ----------------------------------------------------------------------------
54
55jobject android_view_KeyEvent_fromNative(JNIEnv* env, const KeyEvent* event) {
56    jobject eventObj = env->CallStaticObjectMethod(gKeyEventClassInfo.clazz,
57            gKeyEventClassInfo.obtain,
58            nanoseconds_to_milliseconds(event->getDownTime()),
59            nanoseconds_to_milliseconds(event->getEventTime()),
60            event->getAction(),
61            event->getKeyCode(),
62            event->getRepeatCount(),
63            event->getMetaState(),
64            event->getDeviceId(),
65            event->getScanCode(),
66            event->getFlags(),
67            event->getSource(),
68            NULL);
69    if (env->ExceptionCheck()) {
70        ALOGE("An exception occurred while obtaining a key event.");
71        LOGE_EX(env);
72        env->ExceptionClear();
73        return NULL;
74    }
75    return eventObj;
76}
77
78status_t android_view_KeyEvent_toNative(JNIEnv* env, jobject eventObj,
79        KeyEvent* event) {
80    jint deviceId = env->GetIntField(eventObj, gKeyEventClassInfo.mDeviceId);
81    jint source = env->GetIntField(eventObj, gKeyEventClassInfo.mSource);
82    jint metaState = env->GetIntField(eventObj, gKeyEventClassInfo.mMetaState);
83    jint action = env->GetIntField(eventObj, gKeyEventClassInfo.mAction);
84    jint keyCode = env->GetIntField(eventObj, gKeyEventClassInfo.mKeyCode);
85    jint scanCode = env->GetIntField(eventObj, gKeyEventClassInfo.mScanCode);
86    jint repeatCount = env->GetIntField(eventObj, gKeyEventClassInfo.mRepeatCount);
87    jint flags = env->GetIntField(eventObj, gKeyEventClassInfo.mFlags);
88    jlong downTime = env->GetLongField(eventObj, gKeyEventClassInfo.mDownTime);
89    jlong eventTime = env->GetLongField(eventObj, gKeyEventClassInfo.mEventTime);
90
91    event->initialize(deviceId, source, action, flags, keyCode, scanCode, metaState, repeatCount,
92            milliseconds_to_nanoseconds(downTime),
93            milliseconds_to_nanoseconds(eventTime));
94    return OK;
95}
96
97status_t android_view_KeyEvent_recycle(JNIEnv* env, jobject eventObj) {
98    env->CallVoidMethod(eventObj, gKeyEventClassInfo.recycle);
99    if (env->ExceptionCheck()) {
100        ALOGW("An exception occurred while recycling a key event.");
101        LOGW_EX(env);
102        env->ExceptionClear();
103        return UNKNOWN_ERROR;
104    }
105    return OK;
106}
107
108static jstring android_view_KeyEvent_nativeKeyCodeToString(JNIEnv* env, jobject clazz,
109        jint keyCode) {
110    return env->NewStringUTF(KeyEvent::getLabel(keyCode));
111}
112
113static jint android_view_KeyEvent_nativeKeyCodeFromString(JNIEnv* env, jobject clazz,
114        jstring label) {
115    ScopedUtfChars keyLabel(env, label);
116    return KeyEvent::getKeyCodeFromLabel(keyLabel.c_str());
117}
118
119
120// ----------------------------------------------------------------------------
121
122static const JNINativeMethod g_methods[] = {
123    { "nativeKeyCodeToString", "(I)Ljava/lang/String;",
124        (void*)android_view_KeyEvent_nativeKeyCodeToString},
125    { "nativeKeyCodeFromString", "(Ljava/lang/String;)I",
126        (void*)android_view_KeyEvent_nativeKeyCodeFromString},
127};
128
129int register_android_view_KeyEvent(JNIEnv* env) {
130    jclass clazz = FindClassOrDie(env, "android/view/KeyEvent");
131    gKeyEventClassInfo.clazz = MakeGlobalRefOrDie(env, clazz);
132
133    gKeyEventClassInfo.obtain = GetStaticMethodIDOrDie(env, gKeyEventClassInfo.clazz,
134            "obtain", "(JJIIIIIIIILjava/lang/String;)Landroid/view/KeyEvent;");
135    gKeyEventClassInfo.recycle = GetMethodIDOrDie(env, gKeyEventClassInfo.clazz,
136            "recycle", "()V");
137
138    gKeyEventClassInfo.mDeviceId = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mDeviceId", "I");
139    gKeyEventClassInfo.mSource = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mSource", "I");
140    gKeyEventClassInfo.mMetaState = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mMetaState",
141                                                    "I");
142    gKeyEventClassInfo.mAction = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mAction", "I");
143    gKeyEventClassInfo.mKeyCode = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mKeyCode", "I");
144    gKeyEventClassInfo.mScanCode = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mScanCode", "I");
145    gKeyEventClassInfo.mRepeatCount = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mRepeatCount",
146                                                      "I");
147    gKeyEventClassInfo.mFlags = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mFlags", "I");
148    gKeyEventClassInfo.mDownTime = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mDownTime", "J");
149    gKeyEventClassInfo.mEventTime = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mEventTime",
150                                                    "J");
151    gKeyEventClassInfo.mCharacters = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mCharacters",
152                                                     "Ljava/lang/String;");
153
154    return RegisterMethodsOrDie(env, "android/view/KeyEvent", g_methods, NELEM(g_methods));
155}
156
157} // namespace android
158