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/*
* Copyright (C) 2008 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.
*/
package com.android.systemui.statusbar.policy;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.res.TypedArray;
import android.icu.text.DateFormat;
import android.icu.text.DisplayContext;
import android.os.Handler;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.widget.TextView;
import com.android.systemui.Dependency;
import com.android.systemui.R;
import com.android.systemui.broadcast.BroadcastDispatcher;
import java.util.Date;
import java.util.Locale;
public class DateView extends TextView {
private static final String TAG = "DateView";
private final Date mCurrentTime = new Date();
private DateFormat mDateFormat;
private String mLastText;
private String mDatePattern;
private final BroadcastDispatcher mBroadcastDispatcher;
private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// If the handler is null, it means we received a broadcast while the view has not
// finished being attached or in the process of being detached.
// In that case, do not post anything.
Handler handler = getHandler();
if (handler == null) return;
final String action = intent.getAction();
if (Intent.ACTION_TIME_TICK.equals(action)
|| Intent.ACTION_TIME_CHANGED.equals(action)
|| Intent.ACTION_TIMEZONE_CHANGED.equals(action)
|| Intent.ACTION_LOCALE_CHANGED.equals(action)) {
if (Intent.ACTION_LOCALE_CHANGED.equals(action)
|| Intent.ACTION_TIMEZONE_CHANGED.equals(action)) {
// need to get a fresh date format
handler.post(() -> mDateFormat = null);
}
handler.post(() -> updateClock());
}
}
};
public DateView(Context context, AttributeSet attrs) {
super(context, attrs);
TypedArray a = context.getTheme().obtainStyledAttributes(
attrs,
R.styleable.DateView,
0, 0);
try {
mDatePattern = a.getString(R.styleable.DateView_datePattern);
} finally {
a.recycle();
}
if (mDatePattern == null) {
mDatePattern = getContext().getString(R.string.system_ui_date_pattern);
}
mBroadcastDispatcher = Dependency.get(BroadcastDispatcher.class);
}
@Override
protected void onAttachedToWindow() {
super.onAttachedToWindow();
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_TIME_TICK);
filter.addAction(Intent.ACTION_TIME_CHANGED);
filter.addAction(Intent.ACTION_TIMEZONE_CHANGED);
filter.addAction(Intent.ACTION_LOCALE_CHANGED);
mBroadcastDispatcher.registerReceiverWithHandler(mIntentReceiver, filter,
Dependency.get(Dependency.TIME_TICK_HANDLER));
updateClock();
}
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
mDateFormat = null; // reload the locale next time
mBroadcastDispatcher.unregisterReceiver(mIntentReceiver);
}
protected void updateClock() {
if (mDateFormat == null) {
final Locale l = Locale.getDefault();
DateFormat format = DateFormat.getInstanceForSkeleton(mDatePattern, l);
format.setContext(DisplayContext.CAPITALIZATION_FOR_STANDALONE);
mDateFormat = format;
}
mCurrentTime.setTime(System.currentTimeMillis());
final String text = mDateFormat.format(mCurrentTime);
if (!text.equals(mLastText)) {
setText(text);
mLastText = text;
}
}
public void setDatePattern(String pattern) {
if (TextUtils.equals(pattern, mDatePattern)) {
return;
}
mDatePattern = pattern;
mDateFormat = null;
if (isAttachedToWindow()) {
updateClock();
}
}
}
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