| /* |
| * Copyright (C) 2017 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.keyguard; |
| |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.icu.text.DateFormat; |
| import android.icu.text.DisplayContext; |
| import android.net.Uri; |
| import android.os.Handler; |
| import android.app.slice.Slice; |
| import android.app.slice.SliceProvider; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.systemui.R; |
| |
| import java.util.Date; |
| import java.util.Locale; |
| |
| /** |
| * Simple Slice provider that shows the current date. |
| */ |
| public class KeyguardSliceProvider extends SliceProvider { |
| |
| public static final String KEYGUARD_SLICE_URI = "content://com.android.systemui.keyguard/main"; |
| |
| private final Date mCurrentTime = new Date(); |
| protected final Uri mSliceUri; |
| private final Handler mHandler; |
| private String mDatePattern; |
| private DateFormat mDateFormat; |
| private String mLastText; |
| private boolean mRegistered; |
| private boolean mRegisteredEveryMinute; |
| |
| /** |
| * Receiver responsible for time ticking and updating the date format. |
| */ |
| @VisibleForTesting |
| final BroadcastReceiver mIntentReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| final String action = intent.getAction(); |
| if (Intent.ACTION_TIME_TICK.equals(action) |
| || Intent.ACTION_DATE_CHANGED.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 |
| mHandler.post(KeyguardSliceProvider.this::cleanDateFormat); |
| } |
| mHandler.post(KeyguardSliceProvider.this::updateClock); |
| } |
| } |
| }; |
| |
| public KeyguardSliceProvider() { |
| this(new Handler()); |
| } |
| |
| @VisibleForTesting |
| KeyguardSliceProvider(Handler handler) { |
| mHandler = handler; |
| mSliceUri = Uri.parse(KEYGUARD_SLICE_URI); |
| } |
| |
| @Override |
| public Slice onBindSlice(Uri sliceUri) { |
| return new Slice.Builder(sliceUri).addText(mLastText, null, Slice.HINT_TITLE).build(); |
| } |
| |
| @Override |
| public boolean onCreate() { |
| |
| mDatePattern = getContext().getString(R.string.system_ui_date_pattern); |
| |
| registerClockUpdate(false /* everyMinute */); |
| updateClock(); |
| return true; |
| } |
| |
| protected void registerClockUpdate(boolean everyMinute) { |
| if (mRegistered) { |
| if (mRegisteredEveryMinute == everyMinute) { |
| return; |
| } else { |
| unregisterClockUpdate(); |
| } |
| } |
| |
| IntentFilter filter = new IntentFilter(); |
| if (everyMinute) { |
| filter.addAction(Intent.ACTION_TIME_TICK); |
| } |
| filter.addAction(Intent.ACTION_DATE_CHANGED); |
| filter.addAction(Intent.ACTION_TIME_CHANGED); |
| filter.addAction(Intent.ACTION_TIMEZONE_CHANGED); |
| filter.addAction(Intent.ACTION_LOCALE_CHANGED); |
| getContext().registerReceiver(mIntentReceiver, filter, null /* permission*/, |
| null /* scheduler */); |
| mRegistered = true; |
| mRegisteredEveryMinute = everyMinute; |
| } |
| |
| protected void unregisterClockUpdate() { |
| if (!mRegistered) { |
| return; |
| } |
| getContext().unregisterReceiver(mIntentReceiver); |
| mRegistered = false; |
| } |
| |
| @VisibleForTesting |
| boolean isRegistered() { |
| return mRegistered; |
| } |
| |
| protected void updateClock() { |
| final String text = getFormattedDate(); |
| if (!text.equals(mLastText)) { |
| mLastText = text; |
| getContext().getContentResolver().notifyChange(mSliceUri, null /* observer */); |
| } |
| } |
| |
| protected String getFormattedDate() { |
| 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()); |
| return mDateFormat.format(mCurrentTime); |
| } |
| |
| @VisibleForTesting |
| void cleanDateFormat() { |
| mDateFormat = null; |
| } |
| } |