| /* |
| * Copyright (C) 2018 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.settingslib.utils; |
| |
| import android.content.Context; |
| import android.graphics.drawable.Drawable; |
| import android.graphics.drawable.Icon; |
| import androidx.annotation.VisibleForTesting; |
| import androidx.collection.ArrayMap; |
| |
| |
| /** |
| * Icon cache to avoid multiple loads on the same icon. |
| */ |
| public class IconCache { |
| private final Context mContext; |
| @VisibleForTesting |
| final ArrayMap<Icon, Drawable> mMap = new ArrayMap<>(); |
| |
| public IconCache(Context context) { |
| mContext = context; |
| } |
| |
| public Drawable getIcon(Icon icon) { |
| if (icon == null) { |
| return null; |
| } |
| Drawable drawable = mMap.get(icon); |
| if (drawable == null) { |
| drawable = icon.loadDrawable(mContext); |
| updateIcon(icon, drawable); |
| } |
| return drawable; |
| } |
| |
| public void updateIcon(Icon icon, Drawable drawable) { |
| mMap.put(icon, drawable); |
| } |
| } |