Merge "Move SearchWidgetInfoContainer to NexusLauncher" into sc-dev

/*

 * 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.launcher3.allapps.search;

import android.appwidget.AppWidgetHostView;

import android.appwidget.AppWidgetProviderInfo;

import android.content.Context;

import android.widget.RemoteViews;

import java.util.ArrayList;

import java.util.List;

/**

 * A placeholder {@link AppWidgetHostView} used for managing widget search results

 */

public class SearchWidgetInfoContainer extends AppWidgetHostView {

    private int mAppWidgetId;

    private AppWidgetProviderInfo mProviderInfo;

    private RemoteViews mViews;

    private List<AppWidgetHostView> mListeners = new ArrayList<>();

    public SearchWidgetInfoContainer(Context context) {

        super(context);

    }

    @Override

    public void setAppWidget(int appWidgetId, AppWidgetProviderInfo info) {

        mAppWidgetId = appWidgetId;

        mProviderInfo = info;

        for (AppWidgetHostView listener : mListeners) {

            listener.setAppWidget(mAppWidgetId, mProviderInfo);

        }

    }

    @Override

    public void updateAppWidget(RemoteViews remoteViews) {

        mViews = remoteViews;

        for (AppWidgetHostView listener : mListeners) {

            listener.updateAppWidget(remoteViews);

        }

    }

    /**

     * Create a live {@link AppWidgetHostView} from placeholder

     */

    public void attachWidget(AppWidgetHostView hv) {

        hv.setTag(getTag());

        hv.setAppWidget(mAppWidgetId, mProviderInfo);

        hv.updateAppWidget(mViews);

        mListeners.add(hv);

    }

    /**

     * stops AppWidgetHostView from getting updates

     */

    public void detachWidget(AppWidgetHostView hostView) {

        mListeners.remove(hostView);

    }

}