Merge "Interface for WidgetPickerSearchPipeline." into sc-dev

/*

 * Copyright (C) 2021 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.widget.picker.search;

import com.android.launcher3.widget.model.WidgetsListBaseEntry;

import java.util.List;

import java.util.function.Consumer;

/**

 * An interface for a pipeline to handle widgets search.

 */

public interface WidgetsPickerSearchPipeline {

    /**

     * Performs a search query asynchronically. Invokes {@code callback} when the search is

     * complete.

     */

    void query(String input, Consumer<List<WidgetsListBaseEntry>> callback);

    /**

     * Cancels any ongoing search request.

     */

    default void cancel() {};

    /**

     * Cleans up after search is no longer needed.

     */

    default void destroy() {};

}