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

   1 /* Mensa.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.design.widget.TabLayout;
  19 import android.support.v4.app.Fragment;
  20 import android.support.v4.app.FragmentManager;
  21 import android.support.v4.app.FragmentPagerAdapter;
  22 import android.support.v4.view.ViewPager;
  23 import android.support.v7.app.AppCompatActivity;
  24 import android.support.v7.widget.Toolbar;
  25 import android.view.LayoutInflater;
  26 import android.view.View;
  27 import android.view.ViewGroup;
  28
  29 import java.text.SimpleDateFormat;
  30 import java.util.ArrayList;
  31 import java.util.Calendar;
  32 import java.util.Date;
  33 import java.util.List;
  34
  35 import de.dhbwloe.campusapp.CampusAppFragment;
  36 import de.dhbwloe.campusapp.R;
  37 import de.dhbwloe.campusapp.Tools;
  38 import de.dhbwloe.campusapp.search.SearchIndices;
  39
  40 /**
  41  * A simple {@link Fragment} subclass.
  42  */
  43 public class Mensa extends CampusAppFragment {
  44     /* implement this for search results ;) */
  45     public static SearchIndices[] GetSearchIndices() {
  46         return new SearchIndices[] {
  47                 new SearchIndices("Mensa", true) {{
  48                     setUpdateTime(1);
  49                     setTarget("#Mensa");
  50                     setTitle(R.string.search_mensa_title);
  51                     setDescription(R.string.search_mensa_description);
  52                     addKeyWord(R.string.search_mensa_keywords);
  53                 }},
  54         };
  55     }
  56
  57     private TabLayout tabLayout;
  58     private ViewPager viewPager;
  59     private long viewDate;
  60
  61     @Override
  62     public View onCreateView(LayoutInflater inflater, ViewGroup container,
  63                              Bundle savedInstanceState) {
  64         View view = inflater.inflate(R.layout.fragment_mensa, container, false);
  65         boolean viewmodeSet = false;
  66         Bundle arguments = getArguments();
  67         viewDate = (new Date()).getTime()/1000;
  68         if(arguments != null) {
  69             String showdate = arguments.getString("showdate");
  70             long date;
  71             if(showdate != null && !showdate.isEmpty() && (date = Long.parseLong(showdate)) > 0) {
  72                 viewDate = date;
  73             }
  74         }
  75
  76         AppContext.setTitle(AppContext.getResString(R.string.mensa_title));
  77
  78         /*
  79         toolbar = (Toolbar) view.findViewById(R.id.toolbar);
  80         ((AppCompatActivity) getActivity()).setSupportActionBar(toolbar);
  81
  82         ((AppCompatActivity) getActivity()).getSupportActionBar().setDisplayHomeAsUpEnabled(true);
  83         */
  84
  85         viewPager = (ViewPager) view.findViewById(R.id.viewpager);
  86         setupViewPager(viewPager);
  87
  88         tabLayout = (TabLayout) view.findViewById(R.id.tabs);
  89         tabLayout.setupWithViewPager(viewPager);
  90
  91         return view;
  92     }
  93
  94     private void setupViewPager(ViewPager viewPager) {
  95         final ViewPagerAdapter adapter = new ViewPagerAdapter(getChildFragmentManager());
  96
  97         long[] showDates;
  98         long now = (new Date()).getTime()/1000;
  99         if(viewDate < now)
 100             now = viewDate;
 101
 102         Calendar cal = Calendar.getInstance();
 103         cal.setTime(new Date(now * 1000));
 104         cal.set(Calendar.HOUR_OF_DAY, 0);
 105         cal.set(Calendar.MINUTE, 0);
 106         cal.set(Calendar.SECOND, 0);
 107         cal.set(Calendar.MILLISECOND, 0);
 108         long midnight = cal.getTimeInMillis() / 1000;
 109         int dow = cal.get(Calendar.DAY_OF_WEEK);
 110         dow -= 2;
 111         if(dow < 0) // monday should be 0!
 112             dow += 7;
 113         long subTimeToWeekStart = (86400 * dow);
 114         long showDateFrom = midnight - subTimeToWeekStart;
 115
 116         showDates = AppContext.getDatabaseManager().getDaysWithPlanData(showDateFrom, now + (30 * 86400));
 117
 118         int activeItem = -1;
 119         long activeItemDiff = -1;
 120         Bundle args = getArguments();
 121         int lastWeekday = 0;
 122         for(int i = 0; i < showDates.length; i++) {
 123             long date = showDates[i];
 124             Bundle bundle = new Bundle();
 125             if(args != null)
 126                 bundle.putAll(args);
 127             String title;
 128             SimpleDateFormat sdf;
 129
 130             cal.setTime(new Date(date * 1000));
 131             int weekday = cal.get(Calendar.DAY_OF_WEEK);
 132             weekday -= 2; // monday should be 0!
 133             if(weekday < 0)
 134                 weekday += 7;
 135
 136             if(viewDate > 0) {
 137                 long diff = Math.abs(viewDate - date);
 138                 if(activeItem == -1 || diff < activeItemDiff) {
 139                     activeItem = i;
 140                     activeItemDiff = diff;
 141                 }
 142             }
 143
 144             if(lastWeekday > weekday) {
 145                 adapter.addFragment(null, null);
 146             }
 147             lastWeekday = weekday;
 148
 149             title = Tools.getWeekdayString(date, false);
 150             bundle.putLong("date", date);
 151             adapter.addFragment(bundle, title);
 152         }
 153         viewPager.setAdapter(adapter);
 154         viewPager.setCurrentItem(activeItem);
 155
 156         MensaTagesplan tagesplan = (MensaTagesplan)adapter.getItem(activeItem);
 157         tagesplan.onSetActive();
 158
 159
 160         viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
 161             @Override
 162             public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
 163
 164             }
 165
 166             @Override
 167             public void onPageSelected(int position) {
 168                 MensaTagesplan tagesplan = (MensaTagesplan)adapter.getItem(position);
 169                 tagesplan.onSetActive();
 170             }
 171
 172             @Override
 173             public void onPageScrollStateChanged(int state) {
 174
 175             }
 176         });
 177     }
 178
 179
 180     class ViewPagerAdapter extends FragmentPagerAdapter {
 181         private final List<Fragment> mFragmentList = new ArrayList<>();
 182         private final List<Bundle> mFragmentDataList = new ArrayList<>();
 183         private final List<String> mFragmentTitleList = new ArrayList<>();
 184
 185         public ViewPagerAdapter(FragmentManager manager) {
 186             super(manager);
 187         }
 188
 189         @Override
 190         public Fragment getItem(int position) {
 191             Fragment fragment;
 192             while(mFragmentList.size() <= position) {
 193                 mFragmentList.add(null);
 194             }
 195             if(mFragmentList.get(position) != null)
 196                 return mFragmentList.get(position);
 197             fragment = new MensaTagesplan();
 198
 199             fragment.setArguments(mFragmentDataList.get(position));
 200             mFragmentList.set(position, fragment);
 201             return fragment;
 202         }
 203
 204         @Override
 205         public int getCount() {
 206             return mFragmentDataList.size();
 207         }
 208
 209         public void addFragment(Bundle fragmentdata, String title) {
 210             if(title == null) {
 211                 Bundle bnd = new Bundle();
 212                 bnd.putBoolean("parentIsMensaFragment", true);
 213                 mFragmentDataList.add(bnd);
 214                 mFragmentTitleList.add("");
 215                 return;
 216             }
 217
 218             fragmentdata.putBoolean("parentIsMensaFragment", true);
 219             mFragmentDataList.add(fragmentdata);
 220             mFragmentTitleList.add(title);
 221         }
 222
 223         @Override
 224         public CharSequence getPageTitle(int position) {
 225             return mFragmentTitleList.get(position);
 226         }
 227     }
 228
 229 }