com/android/systemui/statusbar/notification/collection/inflation/NotifInflater.java

/*
 * Copyright (C) 2020 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.systemui.statusbar.notification.collection.inflation;
import com.android.systemui.statusbar.notification.collection.NotificationEntry;
import com.android.systemui.statusbar.notification.collection.coordinator.PreparationCoordinator;

/**
 * Used by the {@link PreparationCoordinator}.  When notifications are added or updated, the
 * NotifInflater is asked to (re)inflated and prepare their views.  This inflation occurs off the
 * main thread. When the inflation is finished, NotifInflater will trigger its InflationCallback.
 */
public interface NotifInflater {
    /**
     * Called to rebind the entry's views.
     *
     * @param callback callback called after inflation finishes
     */
    void rebindViews(NotificationEntry entry, InflationCallback callback);

    /**
     * Called to inflate the views of an entry.  Views are not considered inflated until all of its
     * views are bound. Once all views are inflated, the InflationCallback is triggered.
     *
     * @param callback callback called after inflation finishes
     */
    void inflateViews(NotificationEntry entry, InflationCallback callback);

    /**
     * Request to stop the inflation of an entry.  For example, called when a notification is
     * removed and no longer needs to be inflated.
     */
    void abortInflation(NotificationEntry entry);

    /**
     * Callback once all the views are inflated and bound for a given NotificationEntry.
     */
    interface InflationCallback {
        void onInflationFinished(NotificationEntry entry);
    }
}