Merge "Convert ScopedUnfoldTransitionProgressProvider.java to kotlin"
This commit is contained in:
Nicolò Mazzucato
committed by
Android (Google) Code Review
Android (Google) Code Review
commit
7d148d1b40
@@ -1,142 +0,0 @@
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/*
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* Copyright (C) 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.systemui.unfold.util;
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import android.annotation.NonNull;
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import android.annotation.Nullable;
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import com.android.systemui.unfold.UnfoldTransitionProgressProvider;
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import com.android.systemui.unfold.UnfoldTransitionProgressProvider.TransitionProgressListener;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* Manages progress listeners that can have smaller lifespan than the unfold animation.
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* Allows to limit getting transition updates to only when
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* {@link ScopedUnfoldTransitionProgressProvider#setReadyToHandleTransition} is called
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* with readyToHandleTransition = true
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*
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* If the transition has already started by the moment when the clients are ready to play
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* the transition then it will report transition started callback and current animation progress.
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*/
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public final class ScopedUnfoldTransitionProgressProvider implements
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UnfoldTransitionProgressProvider, TransitionProgressListener {
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private static final float PROGRESS_UNSET = -1f;
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@Nullable
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private UnfoldTransitionProgressProvider mSource;
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private final List<TransitionProgressListener> mListeners = new ArrayList<>();
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private boolean mIsReadyToHandleTransition;
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private boolean mIsTransitionRunning;
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private float mLastTransitionProgress = PROGRESS_UNSET;
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public ScopedUnfoldTransitionProgressProvider() {
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this(null);
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}
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public ScopedUnfoldTransitionProgressProvider(
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@Nullable UnfoldTransitionProgressProvider source) {
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setSourceProvider(source);
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}
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/**
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* Sets the source for the unfold transition progress updates,
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* it replaces current provider if it is already set
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* @param provider transition provider that emits transition progress updates
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*/
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public void setSourceProvider(@Nullable UnfoldTransitionProgressProvider provider) {
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if (mSource != null) {
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mSource.removeCallback(this);
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}
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if (provider != null) {
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mSource = provider;
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mSource.addCallback(this);
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} else {
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mSource = null;
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}
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}
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/**
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* Allows to notify this provide whether the listeners can play the transition or not.
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* Call this method with readyToHandleTransition = true when all listeners
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* are ready to consume the transition progress events.
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* Call it with readyToHandleTransition = false when listeners can't process the events.
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*/
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public void setReadyToHandleTransition(boolean isReadyToHandleTransition) {
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if (mIsTransitionRunning) {
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if (isReadyToHandleTransition) {
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mListeners.forEach(TransitionProgressListener::onTransitionStarted);
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if (mLastTransitionProgress != PROGRESS_UNSET) {
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mListeners.forEach(listener ->
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listener.onTransitionProgress(mLastTransitionProgress));
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}
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} else {
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mIsTransitionRunning = false;
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mListeners.forEach(TransitionProgressListener::onTransitionFinished);
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}
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}
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mIsReadyToHandleTransition = isReadyToHandleTransition;
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}
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@Override
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public void addCallback(@NonNull TransitionProgressListener listener) {
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mListeners.add(listener);
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}
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@Override
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public void removeCallback(@NonNull TransitionProgressListener listener) {
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mListeners.remove(listener);
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}
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@Override
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public void destroy() {
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mSource.removeCallback(this);
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}
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@Override
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public void onTransitionStarted() {
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this.mIsTransitionRunning = true;
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if (mIsReadyToHandleTransition) {
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mListeners.forEach(TransitionProgressListener::onTransitionStarted);
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}
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}
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@Override
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public void onTransitionProgress(float progress) {
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if (mIsReadyToHandleTransition) {
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mListeners.forEach(listener -> listener.onTransitionProgress(progress));
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}
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mLastTransitionProgress = progress;
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}
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@Override
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public void onTransitionFinished() {
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if (mIsReadyToHandleTransition) {
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mListeners.forEach(TransitionProgressListener::onTransitionFinished);
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}
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mIsTransitionRunning = false;
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mLastTransitionProgress = PROGRESS_UNSET;
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}
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}
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@@ -0,0 +1,119 @@
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/*
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* Copyright (C) 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.systemui.unfold.util
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import com.android.systemui.unfold.UnfoldTransitionProgressProvider
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import com.android.systemui.unfold.UnfoldTransitionProgressProvider.TransitionProgressListener
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/**
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* Manages progress listeners that can have smaller lifespan than the unfold animation.
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* Allows to limit getting transition updates to only when
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* [ScopedUnfoldTransitionProgressProvider.setReadyToHandleTransition] is called
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* with readyToHandleTransition = true
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*
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* If the transition has already started by the moment when the clients are ready to play
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* the transition then it will report transition started callback and current animation progress.
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*/
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class ScopedUnfoldTransitionProgressProvider @JvmOverloads constructor(
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source: UnfoldTransitionProgressProvider? = null
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) : UnfoldTransitionProgressProvider, TransitionProgressListener {
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private var source: UnfoldTransitionProgressProvider? = null
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private val listeners: MutableList<TransitionProgressListener> = mutableListOf()
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private var isReadyToHandleTransition = false
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private var isTransitionRunning = false
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private var lastTransitionProgress = PROGRESS_UNSET
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init {
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setSourceProvider(source)
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}
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/**
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* Sets the source for the unfold transition progress updates,
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* it replaces current provider if it is already set
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* @param provider transition provider that emits transition progress updates
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*/
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fun setSourceProvider(provider: UnfoldTransitionProgressProvider?) {
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source?.removeCallback(this)
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if (provider != null) {
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source = provider
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provider.addCallback(this)
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} else {
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source = null
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}
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}
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/**
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* Allows to notify this provide whether the listeners can play the transition or not.
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* Call this method with readyToHandleTransition = true when all listeners
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* are ready to consume the transition progress events.
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* Call it with readyToHandleTransition = false when listeners can't process the events.
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*/
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fun setReadyToHandleTransition(isReadyToHandleTransition: Boolean) {
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if (isTransitionRunning) {
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if (isReadyToHandleTransition) {
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listeners.forEach { it.onTransitionStarted() }
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if (lastTransitionProgress != PROGRESS_UNSET) {
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listeners.forEach { it.onTransitionProgress(lastTransitionProgress) }
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}
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} else {
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isTransitionRunning = false
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listeners.forEach { it.onTransitionFinished() }
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}
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}
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this.isReadyToHandleTransition = isReadyToHandleTransition
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}
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override fun addCallback(listener: TransitionProgressListener) {
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listeners += listener
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}
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override fun removeCallback(listener: TransitionProgressListener) {
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listeners -= listener
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}
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override fun destroy() {
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source?.removeCallback(this)
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}
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override fun onTransitionStarted() {
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isTransitionRunning = true
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if (isReadyToHandleTransition) {
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listeners.forEach { it.onTransitionStarted() }
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}
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}
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override fun onTransitionProgress(progress: Float) {
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if (isReadyToHandleTransition) {
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listeners.forEach { it.onTransitionProgress(progress) }
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}
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lastTransitionProgress = progress
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}
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override fun onTransitionFinished() {
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if (isReadyToHandleTransition) {
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listeners.forEach { it.onTransitionFinished() }
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}
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isTransitionRunning = false
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lastTransitionProgress = PROGRESS_UNSET
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}
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companion object {
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private const val PROGRESS_UNSET = -1f
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}
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}
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