/*
 * Copyright (C) 2023 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.taskbar.bubbles;

import com.android.launcher3.taskbar.TaskbarControllers;
import com.android.launcher3.util.RunnableList;

/**
 * Hosts various bubble controllers to facilitate passing between one another.
 */
public class BubbleControllers {

    public final BubbleBarController bubbleBarController;
    public final BubbleBarViewController bubbleBarViewController;
    public final BubbleStashController bubbleStashController;
    public final BubbleStashedHandleViewController bubbleStashedHandleViewController;

    private final RunnableList mPostInitRunnables = new RunnableList();

    /**
     * Want to add a new controller? Don't forget to:
     *   * Call init
     *   * Call onDestroy
     */
    public BubbleControllers(
            BubbleBarController bubbleBarController,
            BubbleBarViewController bubbleBarViewController,
            BubbleStashController bubbleStashController,
            BubbleStashedHandleViewController bubbleStashedHandleViewController) {
        this.bubbleBarController = bubbleBarController;
        this.bubbleBarViewController = bubbleBarViewController;
        this.bubbleStashController = bubbleStashController;
        this.bubbleStashedHandleViewController = bubbleStashedHandleViewController;
    }

    /**
     * Initializes all controllers. Note that controllers can now reference each other through this
     * BubbleControllers instance, but should be careful to only access things that were created
     * in constructors for now, as some controllers may still be waiting for init().
     */
    public void init(TaskbarControllers taskbarControllers) {
        bubbleBarController.init(taskbarControllers, this);
        bubbleBarViewController.init(taskbarControllers, this);
        bubbleStashedHandleViewController.init(taskbarControllers, this);
        bubbleStashController.init(taskbarControllers, this);

        mPostInitRunnables.executeAllAndDestroy();
    }

    /**
     * If all controllers are already initialized, runs the given callback immediately. Otherwise,
     * queues it to run after calling init() on all controllers. This should likely be used in any
     * case where one controller is telling another controller to do something inside init().
     */
    public void runAfterInit(Runnable runnable) {
        // If this has been executed in init, it automatically runs adds to it.
        mPostInitRunnables.add(runnable);
    }

    /**
     * Cleans up all controllers.
     */
    public void onDestroy() {
        bubbleStashedHandleViewController.onDestroy();
        bubbleBarController.onDestroy();
    }
}