app/src/main/java/de/dhbwloe/campusapp/CampusApp.java

   1 /* CampusApp.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;
  17
  18 import android.content.Context;
  19 import android.content.Intent;
  20 import android.nfc.NfcAdapter;
  21 import android.os.Bundle;
  22 import android.support.design.widget.FloatingActionButton;
  23 import android.support.design.widget.Snackbar;
  24 import android.support.v4.app.FragmentActivity;
  25 import android.util.Log;
  26 import android.view.KeyEvent;
  27 import android.view.View;
  28 import android.support.design.widget.NavigationView;
  29 import android.support.v4.view.GravityCompat;
  30 import android.support.v4.widget.DrawerLayout;
  31 import android.support.v7.app.ActionBarDrawerToggle;
  32 import android.support.v7.app.AppCompatActivity;
  33 import android.support.v7.widget.Toolbar;
  34 import android.view.Menu;
  35 import android.view.MenuItem;
  36 import android.view.inputmethod.EditorInfo;
  37 import android.view.inputmethod.InputMethodManager;
  38 import android.widget.EditText;
  39 import android.widget.ImageView;
  40 import android.widget.LinearLayout;
  41 import android.widget.TextView;
  42
  43 import java.util.Date;
  44
  45 import de.dhbwloe.campusapp.nfcreader.NfcCardListener;
  46
  47 public class CampusApp extends FragmentActivity {
  48
  49     private boolean bSearchActive = false;
  50     private CampusAppContext AppContext = null;
  51
  52     /*
  53     * Dev Info:
  54     *
  55     * Die App besteht aus einer einzigen Activity, auf welcher dynamisch Fragmente platziert werden.
  56     * Das Menü, sowie die Headerleiste befinden sich auf der Activity, sind dementsprechend immer verfügbar.
  57     *
  58     * Zur laufzeit der App wird eine einzige Instanz der Klasse CampusAppContext angelegt.
  59     * Dieser Kontext dient als einstiegspunkt für sämmtliche global verfügbaren verwaltungs tools.
  60     * Dazu gehören:
  61     *   AppContext.getNavigationManager()    NavigationManager   Verwaltet die angezeigten Fragmente und deren Navigation
  62     *                                                            .navigatePage("Dashboard")  to navigate to the Dashboard
  63     *   ... to be continued ...
  64      */
  65
  66     @Override
  67     protected void onCreate(Bundle savedInstanceState) {
  68         Log.i("CampusApp", "Event: onCreate");
  69         super.onCreate(savedInstanceState);
  70         setContentView(R.layout.activity_campus_app);
  71
  72         // Erstelle neuen AppContext, wenn keiner existiert
  73         AppContext = CampusAppContext.getInstance();
  74         if(AppContext == null)
  75             AppContext = new CampusAppContext(this, R.id.fragment_container);
  76         else
  77             AppContext.setMainActivity(this);
  78
  79         // Wenn die App aus dem Ruhezustand (oder auch Orientation change) reaktiviert wird soll nicht zuerst der Splashscreen angezeigt werden.
  80         boolean instantRestore = false;
  81         if(savedInstanceState != null) {
  82             long lastrun = savedInstanceState.getLong("lastrun");
  83             lastrun = ((new Date()).getTime()/1000) - lastrun;
  84             Log.i("CampusApp", "Restored from Idle state! Idled: "+lastrun+" secs");
  85             if(lastrun < 30) {
  86                 instantRestore = true;
  87
  88                 // restore previous Title
  89                 AppContext.setTitle(savedInstanceState.getString("activetitle"));
  90             }
  91
  92
  93             Bundle contextVars = savedInstanceState.getBundle("savedContextVariables");
  94             if(contextVars != null) {
  95                 Bundle contextVariables = AppContext.getContextVariables();
  96                 contextVariables.putAll(contextVars);
  97             }
  98         }
  99
 100         prepareMainUi();
 101         if(instantRestore) // orientation change
 102             loadMainUi();
 103         else
 104             // don't add navigation to SlashScreen, or even from SplashScreen to Dashboard to the history log!
 105             // it would be very strange to return to the SplashScreen or an "empty" page on return ;)
 106             AppContext.getNavigationManager().navigatePage("SplashScreen", null, false);
 107
 108     }
 109
 110     @Override
 111     public void onSaveInstanceState(Bundle savedInstanceState) {
 112         Log.i("CampusApp", "Event: onSaveInstanceState");
 113
 114         // Save instance state during "restarts" due to orientation changes.
 115         // We don't want to see the splash screen everytime the orientation changes ;)
 116         savedInstanceState.putLong("lastrun", (new Date()).getTime() / 1000);
 117         savedInstanceState.putString("activepage", AppContext.getNavigationManager().getCurrentPageName());
 118         TextView titleView = (TextView) findViewById(R.id.title);
 119         savedInstanceState.putString("activetitle", titleView.getText().toString());
 120
 121         Bundle contextVariables = AppContext.getContextVariables();
 122         savedInstanceState.putBundle("savedContextVariables", contextVariables);
 123
 124         // Always call the superclass so it can save the view hierarchy state
 125         super.onSaveInstanceState(savedInstanceState);
 126     }
 127
 128     public void prepareMainUi() {
 129         ImageView btnOpenSearch = (ImageView) findViewById(R.id.search_button);
 130         btnOpenSearch.setVisibility(View.GONE);
 131     }
 132
 133     public void loadMainUi() {
 134         ImageView btnOpenSearch = (ImageView) findViewById(R.id.search_button);
 135
 136         btnOpenSearch.setVisibility(View.VISIBLE);
 137         setupActionBar();
 138         setupSearchTriggers();
 139
 140         AppContext.getNfcCardListener().startNfcListener();
 141     }
 142
 143     private void setupActionBar() {
 144         Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
 145         DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
 146         ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
 147         drawer.setDrawerListener(toggle);
 148         toggle.syncState();
 149
 150         NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
 151         navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
 152             @SuppressWarnings("StatementWithEmptyBody")
 153             @Override
 154             public boolean onNavigationItemSelected(MenuItem item) {
 155                 // Handle navigation view item clicks here.
 156                 int id = item.getItemId();
 157
 158                 switch (id) { // Navigation Items from res/menu/activity_campus_app_drawer.xml
 159                     case R.id.nav_dashboard:
 160                         AppContext.getNavigationManager().navigatePage("Dashboard");
 161                         break;
 162                     case R.id.nav_vorlesungsplan:
 163                         AppContext.getNavigationManager().navigatePage("Vorlesungsplan");
 164                         break;
 165                     case R.id.nav_mensa:
 166                         AppContext.getNavigationManager().navigatePage("Mensa");
 167                         break;
 168                     case R.id.nav_news:
 169                         AppContext.getNavigationManager().navigatePage("News");
 170                         break;
 171                     case R.id.nav_settings:
 172                         AppContext.getNavigationManager().navigatePage("Settings");
 173                         break;
 174                     case R.id.nav_wifi:
 175                         AppContext.getNavigationManager().navigatePage("WifiSettings");
 176                         break;
 177                     case R.id.nav_impressum:
 178                         AppContext.getNavigationManager().navigatePage("Impressum");
 179                         break;
 180                     default:
 181                         return false;
 182                 }
 183
 184                 DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
 185                 drawer.closeDrawer(GravityCompat.START);
 186                 return true;
 187             }
 188         });
 189     }
 190
 191     private void setupSearchTriggers() {
 192         ImageView btnOpenSearch = (ImageView) findViewById(R.id.search_button);
 193         ImageView btnCloseSearch = (ImageView) findViewById(R.id.search_clear);
 194         EditText edtSearchInput = (EditText) findViewById(R.id.search_input);
 195         TextView txtTitle = (TextView) findViewById(R.id.title);
 196
 197         // EventListener für Suchfunktion
 198         btnOpenSearch.setOnClickListener(new View.OnClickListener() {
 199             @Override
 200             public void onClick(View view) {
 201                 triggerSearchPanel(true);
 202             }
 203         });
 204         edtSearchInput.setOnFocusChangeListener(new View.OnFocusChangeListener() {
 205             @Override
 206             public void onFocusChange(View v, boolean hasFocus) {
 207                 EditText edtSearchInput = (EditText) v;
 208                 if (!hasFocus && edtSearchInput.getText().length() == 0) {
 209                     triggerSearchPanel(false);
 210                 }
 211             }
 212         });
 213         edtSearchInput.setOnEditorActionListener(new TextView.OnEditorActionListener() {
 214             @Override
 215             public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
 216                 if (actionId == EditorInfo.IME_ACTION_SEARCH) {
 217                     EditText edtSearchInput = (EditText) v;
 218                     triggerSearchAction(edtSearchInput.getText().toString());
 219                     triggerSearchPanel(false);
 220                     return true;
 221                 }
 222                 return false;
 223             }
 224         });
 225         btnCloseSearch.setOnClickListener(new View.OnClickListener() {
 226             @Override
 227             public void onClick(View view) {
 228                 EditText edtSearchInput = (EditText) findViewById(R.id.search_input);
 229                 edtSearchInput.setText("");
 230                 triggerSearchPanel(false);
 231             }
 232         });
 233         txtTitle.setOnClickListener(new View.OnClickListener() {
 234             @Override
 235             public void onClick(View view) {
 236                 triggerSearchPanel(true);
 237             }
 238         });
 239
 240     }
 241
 242     private void triggerSearchPanel(boolean show) {
 243         if(bSearchActive == show)
 244             return;
 245         bSearchActive = show;
 246         LinearLayout layTitleContainer = (LinearLayout) findViewById(R.id.title_container);
 247         LinearLayout laySearchContainer = (LinearLayout) findViewById(R.id.search_container);
 248         EditText edtSearchInput = (EditText) findViewById(R.id.search_input);
 249
 250         InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
 251         if(show) {
 252             layTitleContainer.setVisibility(View.GONE);
 253             laySearchContainer.setVisibility(View.VISIBLE);
 254             edtSearchInput.requestFocus();
 255
 256             imm.showSoftInput(edtSearchInput, InputMethodManager.SHOW_IMPLICIT);
 257         } else {
 258             layTitleContainer.setVisibility(View.VISIBLE);
 259             laySearchContainer.setVisibility(View.GONE);
 260
 261             View view = this.getCurrentFocus();
 262             if (view != null) {
 263                 imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
 264             }
 265         }
 266     }
 267
 268     private void triggerSearchAction(String query) {
 269         Bundle bundle = new Bundle();
 270         bundle.putString("query", query);
 271
 272         AppContext.getNavigationManager().navigatePage("AppSearch", bundle);
 273     }
 274
 275     @Override
 276     public void onBackPressed() {
 277         DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
 278         if (drawer.isDrawerOpen(GravityCompat.START)) {
 279             drawer.closeDrawer(GravityCompat.START);
 280         } else if(!AppContext.getNavigationManager().back()) {
 281             super.onBackPressed(); // trigger system action if internal navigation manager returns false for back()
 282         }
 283     }
 284
 285     @Override
 286     public boolean onCreateOptionsMenu(Menu menu) {
 287         // Inflate the menu; this adds items to the action bar if it is present.
 288         getMenuInflater().inflate(R.menu.campus_app, menu);
 289         return true;
 290     }
 291
 292     @Override
 293     public boolean onOptionsItemSelected(MenuItem item) {
 294         // Handle action bar item clicks here. The action bar will
 295         // automatically handle clicks on the Home/Up button, so long
 296         // as you specify a parent activity in AndroidManifest.xml.
 297         int id = item.getItemId();
 298
 299         //noinspection SimplifiableIfStatement
 300         if (id == R.id.action_settings) {
 301             return true;
 302         }
 303
 304         return super.onOptionsItemSelected(item);
 305     }
 306
 307     /* nfc listener related callbacks */
 308     @Override
 309     public void onResume() {
 310         if(AppContext == null)
 311             AppContext = new CampusAppContext(this, R.id.fragment_container);
 312         else
 313             AppContext.setMainActivity(this);
 314
 315         super.onResume();
 316         Log.i("CampusApp", "onResume event");
 317         AppContext.getNfcCardListener().resumeForefrontDispatcher();
 318     }
 319
 320     @Override
 321     public void onPause() {
 322         super.onPause();
 323         Log.i("CampusApp", "Event: onPause");
 324         AppContext.getNfcCardListener().pauseForefrontDispatcher();
 325     }
 326
 327     @Override
 328     public void onNewIntent(Intent intent) {
 329         if (NfcAdapter.ACTION_TECH_DISCOVERED.equals(intent.getAction())) {
 330             AppContext.getNfcCardListener().handleNfcEvent(intent);
 331         }
 332     }
 333
 334 }