src/com/android/launcher3/badge/FolderBadgeInfo.java

/*
 * Copyright (C) 2017 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.badge;

import com.android.launcher3.Utilities;

/**
 * Subclass of BadgeInfo that only contains the badge count, which is
 * the sum of all the Folder's items' notifications (each counts as 1).
 */
public class FolderBadgeInfo extends BadgeInfo {

    private static final int MIN_COUNT = 0;

    private int mNumNotifications;

    public FolderBadgeInfo() {
        super(null);
    }

    public void addBadgeInfo(BadgeInfo badgeToAdd) {
        if (badgeToAdd == null) {
            return;
        }
        mNumNotifications += badgeToAdd.getNotificationKeys().size();
        mNumNotifications = Utilities.boundToRange(
                mNumNotifications, MIN_COUNT, BadgeInfo.MAX_COUNT);
    }

    public void subtractBadgeInfo(BadgeInfo badgeToSubtract) {
        if (badgeToSubtract == null) {
            return;
        }
        mNumNotifications -= badgeToSubtract.getNotificationKeys().size();
        mNumNotifications = Utilities.boundToRange(
                mNumNotifications, MIN_COUNT, BadgeInfo.MAX_COUNT);
    }

    @Override
    public int getNotificationCount() {
        // This forces the folder badge to always show up as a dot.
        return 0;
    }

    public boolean hasBadge() {
        return mNumNotifications > 0;
    }
}