352100397f
(Some icons are temporary, until we get the final assets) Also some fixes/improvements to CircularIconsPreference: * Show the correct placeholder and +N icons. * Fix the displayIcons-before-measure case (global layout listener was incorrect). * Properly cancel pending image load futures (field didn't point to the actual future). * Don't reload icons if it's the same set (depends on equals() for the items, so unfortunately doesn't work for AppEntry yet). Test: atest com.android.settings.notification.modes Bug: 346551087 Flag: android.app.modes_ui Change-Id: I9d029a5fdd785ada4e2ba4d8a90eba72b5fb9085
109 lines
3.7 KiB
Java
109 lines
3.7 KiB
Java
/*
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* Copyright (C) 2024 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.settings.notification.modes;
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import android.graphics.Color;
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import android.graphics.drawable.ColorDrawable;
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import android.graphics.drawable.Drawable;
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import androidx.annotation.VisibleForTesting;
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import com.google.common.base.MoreObjects;
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import com.google.common.collect.ImmutableList;
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import com.google.common.util.concurrent.ListenableFuture;
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import com.google.common.util.concurrent.ListeningExecutorService;
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import com.google.common.util.concurrent.MoreExecutors;
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import java.util.List;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import java.util.function.Function;
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/**
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* A set of icons to be displayed in a {@link CircularIconsPreference}
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*
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* @param <T> The type of the items in the set. Can be an arbitrary type, the only requirement
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* being that the {@code drawableLoader} supplied to the constructor is able to produce
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* a {@link Drawable} from it (for example a resource id, a Content Uri, etc).
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*/
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class CircularIconSet<T> {
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@VisibleForTesting // Can be set by tests, before creating instances.
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static ExecutorService sExecutorService = Executors.newCachedThreadPool();
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static final CircularIconSet<?> EMPTY = new CircularIconSet<>(ImmutableList.of(),
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unused -> new ColorDrawable(Color.BLACK));
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private final ImmutableList<T> mItems;
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private final Function<T, Drawable> mDrawableLoader;
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private final ListeningExecutorService mBackgroundExecutor;
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private final ConcurrentHashMap<T, Drawable> mCachedIcons;
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CircularIconSet(List<T> items, Function<T, Drawable> drawableLoader) {
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mItems = ImmutableList.copyOf(items);
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mDrawableLoader = drawableLoader;
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mBackgroundExecutor = MoreExecutors.listeningDecorator(sExecutorService);
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mCachedIcons = new ConcurrentHashMap<>();
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}
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@Override
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public String toString() {
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return MoreObjects.toStringHelper(this).add("items", mItems).toString();
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}
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boolean hasSameItemsAs(CircularIconSet<?> other) {
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return other != null && this.mItems.equals(other.mItems);
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}
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int size() {
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return mItems.size();
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}
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/**
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* Loads all icons from the set, using the supplied {@code drawableLoader}, in a background
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* thread.
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*/
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List<ListenableFuture<Drawable>> getIcons() {
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return getIcons(Integer.MAX_VALUE);
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}
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/**
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* Loads up to {@code maxSize} icons from the set, using the supplied {@code drawableLoader}, in
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* a background thread.
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*/
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List<ListenableFuture<Drawable>> getIcons(int maxNumber) {
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return mItems.stream().limit(maxNumber)
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.map(this::loadIcon)
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.toList();
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}
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private ListenableFuture<Drawable> loadIcon(T item) {
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return mBackgroundExecutor.submit(() -> {
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if (mCachedIcons.containsKey(item)) {
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return mCachedIcons.get(item);
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}
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Drawable drawable = mDrawableLoader.apply(item);
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if (drawable != null) {
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mCachedIcons.put(item, drawable);
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}
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return drawable;
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});
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}
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}
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