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/*
* Copyright 2006, 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.
*/
#include <ui/KeyCharacterMap.h>
#include <ui/Input.h>
#include <android_runtime/AndroidRuntime.h>
#include <nativehelper/jni.h>
#include <nativehelper/JNIHelp.h>
#include "android_view_KeyEvent.h"
namespace android {
static struct {
jclass clazz;
} gKeyEventClassInfo;
static struct {
jfieldID keyCode;
jfieldID metaState;
} gFallbackActionClassInfo;
static jint nativeLoad(JNIEnv *env, jobject clazz, jint deviceId) {
KeyCharacterMap* map;
status_t status = KeyCharacterMap::loadByDeviceId(deviceId, &map);
if (status) {
String8 msg;
msg.appendFormat("Could not load key character map for device %d due to error %d. "
"Refer to the log for details.", deviceId, status);
jniThrowException(env, "android/view/KeyCharacterMap$KeyCharacterMapUnavailableException",
msg.string());
return 0;
}
return reinterpret_cast<jint>(map);
}
static void nativeDispose(JNIEnv *env, jobject clazz, jint ptr) {
KeyCharacterMap* map = reinterpret_cast<KeyCharacterMap*>(ptr);
delete map;
}
static jchar nativeGetCharacter(JNIEnv *env, jobject clazz, jint ptr,
jint keyCode, jint metaState) {
KeyCharacterMap* map = reinterpret_cast<KeyCharacterMap*>(ptr);
return map->getCharacter(keyCode, metaState);
}
static jboolean nativeGetFallbackAction(JNIEnv *env, jobject clazz, jint ptr, jint keyCode,
jint metaState, jobject fallbackActionObj) {
KeyCharacterMap* map = reinterpret_cast<KeyCharacterMap*>(ptr);
KeyCharacterMap::FallbackAction fallbackAction;
bool result = map->getFallbackAction(keyCode, metaState, &fallbackAction);
if (result) {
env->SetIntField(fallbackActionObj, gFallbackActionClassInfo.keyCode,
fallbackAction.keyCode);
env->SetIntField(fallbackActionObj, gFallbackActionClassInfo.metaState,
fallbackAction.metaState);
}
return result;
}
static jchar nativeGetNumber(JNIEnv *env, jobject clazz, jint ptr, jint keyCode) {
KeyCharacterMap* map = reinterpret_cast<KeyCharacterMap*>(ptr);
return map->getNumber(keyCode);
}
static jchar nativeGetMatch(JNIEnv *env, jobject clazz, jint ptr, jint keyCode,
jcharArray charsArray, jint metaState) {
KeyCharacterMap* map = reinterpret_cast<KeyCharacterMap*>(ptr);
jsize numChars = env->GetArrayLength(charsArray);
jchar* chars = static_cast<jchar*>(env->GetPrimitiveArrayCritical(charsArray, NULL));
if (!chars) {
return 0;
}
char16_t result = map->getMatch(keyCode, chars, size_t(numChars), metaState);
env->ReleasePrimitiveArrayCritical(charsArray, chars, JNI_ABORT);
return result;
}
static jchar nativeGetDisplayLabel(JNIEnv *env, jobject clazz, jint ptr, jint keyCode) {
KeyCharacterMap* map = reinterpret_cast<KeyCharacterMap*>(ptr);
return map->getDisplayLabel(keyCode);
}
static jint nativeGetKeyboardType(JNIEnv *env, jobject clazz, jint ptr) {
KeyCharacterMap* map = reinterpret_cast<KeyCharacterMap*>(ptr);
return map->getKeyboardType();
}
static jobjectArray nativeGetEvents(JNIEnv *env, jobject clazz, jint ptr, jint deviceId,
jcharArray charsArray) {
KeyCharacterMap* map = reinterpret_cast<KeyCharacterMap*>(ptr);
jchar* chars = env->GetCharArrayElements(charsArray, NULL);
if (!chars) {
return NULL;
}
jsize numChars = env->GetArrayLength(charsArray);
Vector<KeyEvent> events;
jobjectArray result = NULL;
if (map->getEvents(deviceId, chars, size_t(numChars), events)) {
result = env->NewObjectArray(jsize(events.size()), gKeyEventClassInfo.clazz, NULL);
if (result) {
for (size_t i = 0; i < events.size(); i++) {
jobject keyEventObj = android_view_KeyEvent_fromNative(env, &events.itemAt(i));
if (!keyEventObj) break; // threw OOM exception
env->SetObjectArrayElement(result, jsize(i), keyEventObj);
env->DeleteLocalRef(keyEventObj);
}
}
}
env->ReleaseCharArrayElements(charsArray, chars, JNI_ABORT);
return result;
}
/*
* JNI registration.
*/
static JNINativeMethod g_methods[] = {
/* name, signature, funcPtr */
{ "nativeLoad", "(I)I",
(void*)nativeLoad },
{ "nativeDispose", "(I)V",
(void*)nativeDispose },
{ "nativeGetCharacter", "(III)C",
(void*)nativeGetCharacter },
{ "nativeGetFallbackAction", "(IIILandroid/view/KeyCharacterMap$FallbackAction;)Z",
(void*)nativeGetFallbackAction },
{ "nativeGetNumber", "(II)C",
(void*)nativeGetNumber },
{ "nativeGetMatch", "(II[CI)C",
(void*)nativeGetMatch },
{ "nativeGetDisplayLabel", "(II)C",
(void*)nativeGetDisplayLabel },
{ "nativeGetKeyboardType", "(I)I",
(void*)nativeGetKeyboardType },
{ "nativeGetEvents", "(II[C)[Landroid/view/KeyEvent;",
(void*)nativeGetEvents },
};
#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);
int register_android_text_KeyCharacterMap(JNIEnv* env)
{
FIND_CLASS(gKeyEventClassInfo.clazz, "android/view/KeyEvent");
gKeyEventClassInfo.clazz = jclass(env->NewGlobalRef(gKeyEventClassInfo.clazz));
jclass clazz;
FIND_CLASS(clazz, "android/view/KeyCharacterMap$FallbackAction");
GET_FIELD_ID(gFallbackActionClassInfo.keyCode, clazz,
"keyCode", "I");
GET_FIELD_ID(gFallbackActionClassInfo.metaState, clazz,
"metaState", "I");
return AndroidRuntime::registerNativeMethods(env,
"android/view/KeyCharacterMap", g_methods, NELEM(g_methods));
}
}; // namespace android
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