app/src/main/java/de/dhbwloe/campusapp/fragments/AppSearchInternal.java

   1 /* AppSearchInternal.java
   2  *
   3  * This program is free software: you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation, either version 3 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  15  */
  16 package de.dhbwloe.campusapp.fragments;
  17 import android.os.Bundle;
  18 import android.support.v4.app.Fragment;
  19 import android.util.Log;
  20 import android.view.LayoutInflater;
  21 import android.view.View;
  22 import android.view.ViewGroup;
  23 import android.widget.AdapterView;
  24 import android.widget.ListView;
  25 import android.widget.ProgressBar;
  26 import android.widget.TextView;
  27
  28 import java.util.ArrayList;
  29 import java.util.Date;
  30
  31 import de.dhbwloe.campusapp.CampusAppContext;
  32 import de.dhbwloe.campusapp.CampusAppFragment;
  33 import de.dhbwloe.campusapp.R;
  34 import de.dhbwloe.campusapp.search.SearchIndices;
  35 import de.dhbwloe.campusapp.search.SearchTarget;
  36
  37 /**
  38  * A simple {@link Fragment} subclass.
  39  */
  40 public class AppSearchInternal extends CampusAppFragment implements AppSearchProvider {
  41     private String sSearchQuery;
  42     private boolean bQueryExecuted = false;
  43     private AppSearchListAdapter appSearchAdapter;
  44     private ArrayList<AppSearchListItem> searchResultItems = new ArrayList<AppSearchListItem>();
  45
  46     @Override
  47     public void onCreate(Bundle savedInstanceState) {
  48         Log.i("AppSearchInternal", "Event: onCreate");
  49         super.onCreate(savedInstanceState);
  50         Bundle savedState;
  51         if((savedState = getArguments()) != null)
  52             sSearchQuery = savedState.getString("query");
  53         else if(savedInstanceState != null && (savedState = savedInstanceState.getBundle("SearchInternal")) != null) {
  54             sSearchQuery = savedState.getString("query");
  55             if(savedState.getBoolean("executed")) {
  56                 executeSearch(false);
  57             }
  58         }
  59     }
  60
  61     @Override
  62     public void onSaveInstanceState(Bundle savedInstanceState) {
  63         Log.i("AppSearchInternal", "Event: onSaveInstanceState");
  64         Bundle bundle = new Bundle();
  65         bundle.putString("query", sSearchQuery);
  66         bundle.putBoolean("executed", bQueryExecuted);
  67         savedInstanceState.putBundle("SearchInternal", bundle);
  68         super.onSaveInstanceState(savedInstanceState);
  69     }
  70
  71     private void parseIstanceState(Bundle bundle) {
  72         if(sSearchQuery != null)
  73             return;
  74         Bundle args = getArguments();
  75         if(args != null) {
  76             String queryString = args.getString("query");
  77             if(queryString != null)
  78                 sSearchQuery = queryString;
  79         }
  80         if(sSearchQuery == null && bundle != null) {
  81             String queryString = bundle.getString("query");
  82             if(queryString != null)
  83                 sSearchQuery = queryString;
  84         }
  85     }
  86
  87     @Override
  88     public View onCreateView(LayoutInflater inflater, ViewGroup container,
  89                              Bundle savedInstanceState) {
  90         Log.i("AppSearchInternal", "Event: onCreateView");
  91         if(AppContext == null)
  92             AppContext = CampusAppContext.getInstance();
  93         oFragmentView = inflater.inflate(R.layout.fragment_appsearch_list, container, false);
  94
  95         parseIstanceState(savedInstanceState);
  96
  97         ListView searchResultList = (ListView) oFragmentView.findViewById(R.id.searchResultItems);
  98         appSearchAdapter = new AppSearchListAdapter(oFragmentView.getContext(), R.layout.fragment_appsearch_listitem, searchResultItems);
  99         searchResultList.setAdapter(appSearchAdapter);
 100
 101         searchResultList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
 102             @Override
 103             public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
 104                 AppSearchListItem item = searchResultItems.get(position);
 105                 if (item == null)
 106                     return;
 107                 navigateToResult(item);
 108             }
 109         });
 110
 111         return oFragmentView;
 112     }
 113
 114     public void executeSearch(boolean reset) {
 115         if(sSearchQuery == null)
 116             parseIstanceState(null);
 117         Log.i("AppSearchInternal", "Action: executeSearch "+sSearchQuery);
 118         if(AppContext == null)
 119             AppContext = CampusAppContext.getInstance();
 120         if(bQueryExecuted && !reset)
 121             return;
 122         bQueryExecuted = true;
 123
 124         searchResultItems.clear();
 125
 126         SearchIndices[] indices = AppContext.getDatabaseManager().performSearchRequest(sSearchQuery, 40);
 127         for(int i = 0; i < indices.length; i++) {
 128             SearchTarget target = new SearchTarget(indices[i].getTarget());
 129             AppSearchListItem item = new AppSearchListItem(indices[i].getTitle(), indices[i].getDescription(), target);
 130             searchResultItems.add(item);
 131         }
 132         if(appSearchAdapter != null)
 133             appSearchAdapter.notifyDataSetChanged();
 134
 135     }
 136
 137     private void navigateToResult(AppSearchListItem result) {
 138         SearchTarget target = result.getTarget();
 139
 140         target.navigate(AppContext.getNavigationManager());
 141     }
 142
 143 }