src/com/android/launcher3/allapps/search/DefaultSearchAdapterProvider.java

/*
 * 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.allapps.search;

import android.graphics.Canvas;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import com.android.launcher3.BubbleTextView;
import com.android.launcher3.allapps.AllAppsGridAdapter;
import com.android.launcher3.model.data.ItemInfo;
import com.android.launcher3.views.AppLauncher;

/**
 * Provides views for local search results.
 */
public class DefaultSearchAdapterProvider extends SearchAdapterProvider<AppLauncher> {

    private final RecyclerView.ItemDecoration mDecoration;
    private View mHighlightedView;

    public DefaultSearchAdapterProvider(AppLauncher launcher) {
        super(launcher);
        mDecoration = new RecyclerView.ItemDecoration() {
            @Override
            public void onDraw(@NonNull Canvas c, @NonNull RecyclerView parent,
                    @NonNull RecyclerView.State state) {
                super.onDraw(c, parent, state);
            }
        };
    }

    @Override
    public void onBindView(AllAppsGridAdapter.ViewHolder holder, int position) {
        if (position == 0) {
            mHighlightedView = holder.itemView;
        }
    }

    @Override
    public boolean isViewSupported(int viewType) {
        return false;
    }

    @Override
    public AllAppsGridAdapter.ViewHolder onCreateViewHolder(LayoutInflater layoutInflater,
            ViewGroup parent, int viewType) {
        return null;
    }

    @Override
    public boolean launchHighlightedItem() {
        if (mHighlightedView instanceof BubbleTextView
                && mHighlightedView.getTag() instanceof ItemInfo) {
            ItemInfo itemInfo = (ItemInfo) mHighlightedView.getTag();
            return mLauncher.startActivitySafely(mHighlightedView, itemInfo.getIntent(), itemInfo);
        }
        return false;
    }

    @Override
    public View getHighlightedItem() {
        return mHighlightedView;
    }

    @Override
    public RecyclerView.ItemDecoration getDecorator() {
        return mDecoration;
    }

    @Override
    public void clearHighlightedItem() {
        mHighlightedView = null;
    }
}