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/*
* Copyright (C) 2016 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.launcher3.shortcuts;
import android.annotation.TargetApi;
import android.os.Build;
import android.os.UserHandle;
import android.util.ArrayMap;
import android.util.LruCache;
import java.util.List;
/**
* Loads {@link ShortcutInfoCompat}s on demand (e.g. when launcher
* loads for pinned shortcuts and on long-press for dynamic shortcuts), and caches them
* for handful of apps in an LruCache while launcher lives.
*/
@TargetApi(Build.VERSION_CODES.N)
public class ShortcutCache {
private static final int CACHE_SIZE = 30; // Max number shortcuts we cache.
private final LruCache<ShortcutKey, ShortcutInfoCompat> mCachedShortcuts;
// We always keep pinned shortcuts in the cache.
private final ArrayMap<ShortcutKey, ShortcutInfoCompat> mPinnedShortcuts;
public ShortcutCache() {
mCachedShortcuts = new LruCache<>(CACHE_SIZE);
mPinnedShortcuts = new ArrayMap<>();
}
/**
* Removes shortcuts from the cache when shortcuts change for a given package.
*
* Returns a map of ids to their evicted shortcuts.
*
* @see android.content.pm.LauncherApps.Callback#onShortcutsChanged(String, List, UserHandle).
*/
public void removeShortcuts(List<ShortcutInfoCompat> shortcuts) {
for (ShortcutInfoCompat shortcut : shortcuts) {
ShortcutKey key = ShortcutKey.fromInfo(shortcut);
mCachedShortcuts.remove(key);
mPinnedShortcuts.remove(key);
}
}
public ShortcutInfoCompat get(ShortcutKey key) {
if (mPinnedShortcuts.containsKey(key)) {
return mPinnedShortcuts.get(key);
}
return mCachedShortcuts.get(key);
}
public void put(ShortcutKey key, ShortcutInfoCompat shortcut) {
if (shortcut.isPinned()) {
mPinnedShortcuts.put(key, shortcut);
} else {
mCachedShortcuts.put(key, shortcut);
}
}
}
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