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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  *
     16  */
     17 
     18 package com.android.settings.intelligence.search;
     19 
     20 import android.content.Context;
     21 import android.support.v7.util.DiffUtil;
     22 import android.support.v7.widget.RecyclerView;
     23 import android.view.LayoutInflater;
     24 import android.view.View;
     25 import android.view.ViewGroup;
     26 
     27 import com.android.settings.intelligence.R;
     28 import com.android.settings.intelligence.search.savedqueries.SavedQueryViewHolder;
     29 
     30 import java.util.ArrayList;
     31 import java.util.List;
     32 
     33 public class SearchResultsAdapter extends RecyclerView.Adapter<SearchViewHolder> {
     34 
     35     private final SearchFragment mFragment;
     36     private final List<SearchResult> mSearchResults;
     37 
     38     public SearchResultsAdapter(SearchFragment fragment) {
     39         mFragment = fragment;
     40         mSearchResults = new ArrayList<>();
     41 
     42         setHasStableIds(true);
     43     }
     44 
     45     @Override
     46     public SearchViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
     47         final Context context = parent.getContext();
     48         final LayoutInflater inflater = LayoutInflater.from(context);
     49         final View view;
     50         switch (viewType) {
     51             case ResultPayload.PayloadType.INTENT:
     52                 view = inflater.inflate(R.layout.search_intent_item, parent, false);
     53                 return new IntentSearchViewHolder(view);
     54             case ResultPayload.PayloadType.INLINE_SWITCH:
     55                 // TODO (b/62807132) replace layout InlineSwitchViewHolder and return an
     56                 // InlineSwitchViewHolder.
     57                 view = inflater.inflate(R.layout.search_intent_item, parent, false);
     58                 return new IntentSearchViewHolder(view);
     59             case ResultPayload.PayloadType.INLINE_LIST:
     60                 // TODO (b/62807132) build a inline-list view holder & layout.
     61                 view = inflater.inflate(R.layout.search_intent_item, parent, false);
     62                 return new IntentSearchViewHolder(view);
     63             case ResultPayload.PayloadType.SAVED_QUERY:
     64                 view = inflater.inflate(R.layout.search_saved_query_item, parent, false);
     65                 return new SavedQueryViewHolder(view);
     66             default:
     67                 return null;
     68         }
     69     }
     70 
     71     @Override
     72     public void onBindViewHolder(SearchViewHolder holder, int position) {
     73         holder.onBind(mFragment, mSearchResults.get(position));
     74     }
     75 
     76     @Override
     77     public long getItemId(int position) {
     78         return mSearchResults.get(position).hashCode();
     79     }
     80 
     81     @Override
     82     public int getItemViewType(int position) {
     83         return mSearchResults.get(position).viewType;
     84     }
     85 
     86     @Override
     87     public int getItemCount() {
     88         return mSearchResults.size();
     89     }
     90 
     91     /**
     92      * Displays recent searched queries.
     93      */
     94     public void displaySavedQuery(List<? extends SearchResult> data) {
     95         clearResults();
     96         mSearchResults.addAll(data);
     97         notifyDataSetChanged();
     98     }
     99 
    100     public void clearResults() {
    101         mSearchResults.clear();
    102         notifyDataSetChanged();
    103     }
    104 
    105     public void postSearchResults(List<? extends SearchResult> newSearchResults) {
    106         final DiffUtil.DiffResult diffResult = DiffUtil.calculateDiff(
    107                 new SearchResultDiffCallback(mSearchResults, newSearchResults));
    108         mSearchResults.clear();
    109         mSearchResults.addAll(newSearchResults);
    110         diffResult.dispatchUpdatesTo(this);
    111         mFragment.onSearchResultsDisplayed(mSearchResults.size());
    112     }
    113 
    114     public List<SearchResult> getSearchResults() {
    115         return mSearchResults;
    116     }
    117 }
    118