38be42ce0a
find . -name "*.java" | xargs java -jar \ ~/bin/google-java-format-1.25.2-all-deps.jar \ --aosp --fix-imports-only --replace Change-Id: If39579285c13cecdb3592d8ccf0605b8030b340e
119 lines
3.8 KiB
Java
119 lines
3.8 KiB
Java
/*
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* SPDX-FileCopyrightText: 2016 The CyanogenMod Project
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* SPDX-License-Identifier: Apache-2.0
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*/
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package lineageos.preference;
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import android.app.Activity;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.Intent;
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import android.os.Bundle;
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import android.os.UserHandle;
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import android.util.Log;
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import lineageos.platform.Manifest;
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import java.util.Objects;
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/**
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* Base class for remote summary providers.
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* <p>
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* When an application is hosting preferences which are served by a different process,
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* the former needs to stay updated with changes in order to display the correct
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* summary when the user returns to the latter.
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* <p>
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* This class implements a simple ordered broadcast mechanism where the application
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* running the RemotePreference sends an explicit broadcast to the host, who
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* fills out the extras in the result bundle and returns it to the caller.
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* <p>
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* A minimal implementation will override getSummary and return a summary
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* for the given key. Alternatively, fillResultExtras can be overridden
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* if additional data should be added to the result.
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*/
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public class RemotePreferenceUpdater extends BroadcastReceiver {
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private static final String TAG = RemotePreferenceUpdater.class.getSimpleName();
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private static final boolean DEBUG = Log.isLoggable(
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RemotePreference.class.getSimpleName(), Log.VERBOSE);
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private static Intent getTargetIntent(Context context, String key) {
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final Intent i = new Intent(RemotePreference.ACTION_REFRESH_PREFERENCE);
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i.putExtra(RemotePreference.EXTRA_KEY, key);
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return i;
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}
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/**
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* Fetch the updated summary for the given key
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*
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* @param key
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* @return the summary for the given key
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*/
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protected String getSummary(Context context, String key) {
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return null;
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}
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/**
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* Fill the bundle with the summary and any other data needed to update
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* the client.
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*
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* @param context
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* @param key
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* @param extras
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* @return true if successful
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*/
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protected boolean fillResultExtras(Context context, String key, Bundle extras) {
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extras.putString(RemotePreference.EXTRA_KEY, key);
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final String summary = getSummary(context, key);
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if (summary == null) {
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return false;
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}
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extras.putString(RemotePreference.EXTRA_SUMMARY, summary);
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return true;
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}
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/**
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* @hide
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*/
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@Override
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public void onReceive(Context context, Intent intent) {
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if (isOrderedBroadcast() &&
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RemotePreference.ACTION_UPDATE_PREFERENCE.equals(intent.getAction())) {
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final String key = intent.getStringExtra(RemotePreference.EXTRA_KEY);
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if (DEBUG) Log.d(TAG, "onReceive key=" +key +
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" intent=" + Objects.toString(intent) +
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" extras=" + Objects.toString(intent.getExtras()));
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if (key != null) {
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if (fillResultExtras(context, key, getResultExtras(true))) {
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setResultCode(Activity.RESULT_OK);
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if (DEBUG) Log.d(TAG, "onReceive result=" +
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Objects.toString(getResultExtras(true)));
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return;
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}
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}
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abortBroadcast();
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}
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}
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/**
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* Tell the RemotePreference that updated state is available. Call from
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* the fragment when necessary.
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*
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* @param context
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* @param key
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*/
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public static void notifyChanged(Context context, String key) {
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if (DEBUG) Log.d(TAG, "notifyChanged: key=" + key +
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" target=" + Objects.toString(getTargetIntent(context, key)));
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context.sendBroadcastAsUser(getTargetIntent(context, key),
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UserHandle.CURRENT, Manifest.permission.MANAGE_REMOTE_PREFERENCES);
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}
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}
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