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package com.android.server.status.widget;
import com.android.internal.R;
import com.android.server.status.widget.PowerButton;
import android.content.ContentResolver;
import android.content.Context;
import android.provider.Settings;
import android.util.Log;
import android.os.Build;
import java.util.concurrent.Executors;
import java.util.concurrent.ExecutorService;
import java.lang.Thread;
import java.lang.Runnable;
import java.io.File;
import java.io.FileWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
public class FlashlightButton extends PowerButton {
Context mContext;
static FlashlightButton ownButton;
private static final String TAG = "FlashlightButton";
private static int currentMode;
private static FileWriter mWriter;
private static ExecutorService threadExecutor;
private static boolean runTimer = false;
private static final int MODE_DEFAULT = 0;
private static final int MODE_HIGH = 1;
private static boolean useDeathRay = !Build.DEVICE.equals("supersonic");;
private static final String FLASHLIGHT_FILE;
private static final String FLASHLIGHT_FILE_SPOTLIGHT = "/sys/class/leds/spotlight/brightness";
static {
File ff = new File(FLASHLIGHT_FILE_SPOTLIGHT);
if (ff.exists()) {
FLASHLIGHT_FILE = FLASHLIGHT_FILE_SPOTLIGHT;
} else {
FLASHLIGHT_FILE = "/sys/class/leds/flashlight/brightness";
}
}
public void updateState(Context context) {
mContext = context;
boolean useCustomExp = Settings.System.getInt(mContext.getContentResolver(),
Settings.System.NOTIF_EXPANDED_BAR_CUSTOM, 0) == 1;
if(getFlashlightEnabled()) {
if (useCustomExp) {
currentIcon = com.android.internal.R.drawable.stat_flashlight_on_cust;
} else {
currentIcon = com.android.internal.R.drawable.stat_flashlight_on;
}
currentState = STATE_ENABLED;
} else {
if (useCustomExp) {
currentIcon = com.android.internal.R.drawable.stat_flashlight_off_cust;
} else {
currentIcon = com.android.internal.R.drawable.stat_flashlight_off;
}
currentState = STATE_DISABLED;
}
}
public void toggleState(Context context) {
currentMode = Settings.System.getInt(context.getContentResolver(), Settings.System.EXPANDED_FLASH_MODE,
MODE_DEFAULT);
boolean enabled = getFlashlightEnabled();
runTimer = !enabled;
setFlashlightEnabled(!enabled);
}
public static FlashlightButton getInstance() {
if (ownButton==null) ownButton = new FlashlightButton();
return ownButton;
}
public boolean getFlashlightEnabled() {
try {
FileInputStream fis = new FileInputStream(FLASHLIGHT_FILE);
int result = fis.read();
fis.close();
return (result != '0');
} catch (Exception e) {
return false;
}
}
public void setFlashlightEnabled(boolean on) {
try {
if (mWriter == null) {
mWriter = new FileWriter(FLASHLIGHT_FILE);
}
int value = 0;
if (on) {
switch (currentMode) {
case MODE_HIGH:
value = useDeathRay ? 3 : 128;
break;
default:
value = 1;
break;
}
}
mWriter.write(String.valueOf(value));
mWriter.flush();
if (!on) {
mWriter.close();
mWriter = null;
}
} catch (Exception e) {
Log.e(TAG, "setFlashlightEnabled failed", e);
}
startTimer(on);
}
private void startTimer(boolean on) {
if (!on) return;
if (threadExecutor == null) threadExecutor = Executors.newSingleThreadExecutor();
flashTimer timerRun = new flashTimer();
threadExecutor.execute(timerRun);
}
public class flashTimer implements Runnable {
public flashTimer() {
}
public void run() {
try {
Thread.sleep(200);
} catch (InterruptedException e) {
}
setFlashlightEnabled(runTimer);
}
}
@Override
void initButton(int position) {
}
}
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