mirror of https://github.com/M66B/FairEmail.git
103 lines
3.1 KiB
Java
103 lines
3.1 KiB
Java
package eu.faircode.email;
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/*
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This file is part of FairEmail.
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FairEmail is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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FairEmail is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FairEmail. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2018-2019 by Marcel Bokhorst (M66B)
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*/
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import androidx.annotation.NonNull;
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import androidx.lifecycle.Lifecycle;
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import androidx.lifecycle.LifecycleObserver;
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import androidx.lifecycle.LifecycleOwner;
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import androidx.lifecycle.LifecycleRegistry;
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import androidx.lifecycle.OnLifecycleEvent;
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// This class can be used as an externally controlled standalone or child life cycle owner
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public class TwoStateOwner implements LifecycleOwner {
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private String name;
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private LifecycleRegistry registry;
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// https://developer.android.com/topic/libraries/architecture/lifecycle#lc
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TwoStateOwner(String aname) {
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name = aname;
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create();
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}
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TwoStateOwner(LifecycleOwner owner, String aname) {
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this(aname);
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// Destroy when parent destroyed
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owner.getLifecycle().addObserver(new LifecycleObserver() {
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@OnLifecycleEvent(Lifecycle.Event.ON_DESTROY)
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public void onDestroyed() {
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if (BuildConfig.DEBUG)
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Log.i("LifeCycle " + name + " parent destroyed");
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destroy();
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}
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});
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}
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private void create() {
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// Initialize
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registry = new LifecycleRegistry(this);
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registry.addObserver(new LifecycleObserver() {
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@OnLifecycleEvent(Lifecycle.Event.ON_ANY)
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public void onAny() {
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//if (BuildConfig.DEBUG)
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// Log.i("LifeCycle " + name + " state=" + registry.getCurrentState() + " " + registry);
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}
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});
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registry.setCurrentState(Lifecycle.State.CREATED);
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}
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void start() {
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if (!registry.getCurrentState().equals(Lifecycle.State.DESTROYED))
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registry.setCurrentState(Lifecycle.State.STARTED);
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}
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void stop() {
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if (!registry.getCurrentState().equals(Lifecycle.State.DESTROYED))
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registry.setCurrentState(Lifecycle.State.CREATED);
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}
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void restart() {
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stop();
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start();
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}
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void recreate() {
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destroy();
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create();
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}
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void destroy() {
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Lifecycle.State state = registry.getCurrentState();
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if (!state.equals(Lifecycle.State.CREATED))
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registry.setCurrentState(Lifecycle.State.CREATED);
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if (!state.equals(Lifecycle.State.DESTROYED))
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registry.setCurrentState(Lifecycle.State.DESTROYED);
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}
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@NonNull
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@Override
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public Lifecycle getLifecycle() {
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return registry;
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}
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} |