thoerup/traininfo/StationList.java

package dk.thoerup.traininfo;

import static dk.thoerup.traininfo.R.string.app_name;
import static dk.thoerup.traininfo.R.string.generic_cancel;
import static dk.thoerup.traininfo.R.string.generic_retry;
import static dk.thoerup.traininfo.R.string.generic_search;
import static dk.thoerup.traininfo.R.string.stationlist_accuracy;
import static dk.thoerup.traininfo.R.string.stationlist_addfavorite;
import static dk.thoerup.traininfo.R.string.stationlist_favorites;
import static dk.thoerup.traininfo.R.string.stationlist_fetcherror;
import static dk.thoerup.traininfo.R.string.stationlist_findbyname;
import static dk.thoerup.traininfo.R.string.stationlist_findingnearby;
import static dk.thoerup.traininfo.R.string.stationlist_gpsinfo;
import static dk.thoerup.traininfo.R.string.stationlist_gpstimeout;
import static dk.thoerup.traininfo.R.string.stationlist_latitude;
import static dk.thoerup.traininfo.R.string.stationlist_loadfavorites;
import static dk.thoerup.traininfo.R.string.stationlist_locationinfo;
import static dk.thoerup.traininfo.R.string.stationlist_longitude;
import static dk.thoerup.traininfo.R.string.stationlist_nearbystations;
import static dk.thoerup.traininfo.R.string.stationlist_nofavorites;
import static dk.thoerup.traininfo.R.string.stationlist_nolocation;
import static dk.thoerup.traininfo.R.string.stationlist_nolocationprovider;
import static dk.thoerup.traininfo.R.string.stationlist_nostations;
import static dk.thoerup.traininfo.R.string.stationlist_obtainedby;
import static dk.thoerup.traininfo.R.string.stationlist_removefavorite;
import static dk.thoerup.traininfo.R.string.stationlist_search;
import static dk.thoerup.traininfo.R.string.stationlist_stationadded;
import static dk.thoerup.traininfo.R.string.stationlist_stationmap;
import static dk.thoerup.traininfo.R.string.stationlist_stationremoved;
import static dk.thoerup.traininfo.R.string.stationlist_stationsearch;
import static dk.thoerup.traininfo.R.string.stationlist_twocharmin;
import static dk.thoerup.traininfo.R.string.stationlist_waitforlocation;
import static dk.thoerup.traininfo.R.string.stationlist_satellitecount;

import java.util.ArrayList;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.location.Location;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.ContextMenu;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.View.OnCreateContextMenuListener;
import android.widget.AdapterView;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Toast;
import dk.thoerup.android.traininfo.common.StationBean;
import dk.thoerup.android.traininfo.common.StationBean.StationEntry;
import dk.thoerup.traininfo.provider.ProviderFactory;
import dk.thoerup.traininfo.provider.StationProvider;
import dk.thoerup.traininfo.stationmap.GeoPair;
import dk.thoerup.traininfo.stationmap.StationMapView;
import dk.thoerup.traininfo.util.IntSet;
import dk.thoerup.traininfo.util.MessageBox;

public class StationList extends ListActivity  {

        
        public static final int OPTIONS_MAP = 2003;
        public static final int OPTIONS_GPSINFO = 2004;
        
        public static final int DLG_PROGRESS = 3001;
        public static final int DLG_STATIONNAME = 3002;
        
        
        public static final int GPS_TIMEOUT_MS = 15000; //how long are we willing to wait for gps fix -in milliseconds
        
        
        static enum LookupMethod {
                ByLocation,
                ByName,
                ByList,
                MethodNone
        }
        
        
        String dialogMessage = "";
        ProgressDialog dialog;
        LocationLookup locationLookup = null;
        FindStationsTask findStationsTask;
        StationsFetchedHandler stationsFetched = new StationsFetchedHandler();
        
        //GeoPair location = new GeoPair();

        boolean isLaunchedforShortcut;

        StationBean stations = new StationBean();
        
        StationProvider stationProvider = ProviderFactory.getStationProvider();
                
        StationListAdapter adapter = null;
        
        FavoritesMenu contextMenu = new FavoritesMenu();
        IntSet favorites = new IntSet();

        WelcomeScreen.ListType listType;
        SharedPreferences prefs;
                        
        ///////////////////////////////////////////////////////////////////////////////////////////
        //Activity call backs
        

        @Override
        public void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.stationlist);
                
                
                adapter = new StationListAdapter(this);
                setListAdapter(adapter);
                
                ListView lv = getListView();
                lv.setOnCreateContextMenuListener(contextMenu);
                
                locationLookup = new LocationLookup(this);
                

                prefs = getSharedPreferences("TrainStation", 0);
                String favoriteString = prefs.getString("favorites", "");
                if (! favoriteString.equals("") ) {
                        favorites.fromString(favoriteString);
                }
                
                listType = (WelcomeScreen.ListType) getIntent().getSerializableExtra("type");
                setTitle();
                
                isLaunchedforShortcut = getIntent().getBooleanExtra("shortcut", false);
                
                ProviderFactory.purgeOldEntries(); //cleanup before fetching more data
                
                if (savedInstanceState == null) {

                        
                        switch (listType) {
                        case ListNearest:
                                startLookup();
                                break;
                        case ListSearch:                                
                                showDialog(DLG_STATIONNAME); 
                                break;
                        case ListFavorites:
                                startFavoriteLookup();
                                break;
                        default:
                                // Not possible !?!
                        }
                        
                } else {
                        stations = (StationBean) savedInstanceState.getSerializable("stations");
                        adapter.setStations(stations);
                }
                
        }
        
        
        @Override
        protected void onDestroy() {
                super.onDestroy();
                
                
                if (locationLookup != null) {
                        locationLookup.stopSearch();
                }
                if (findStationsTask != null) {
                        findStationsTask.cancel(true);
                }               
        }

        
        protected void setTitle() {
                String dialogTitle = getResources().getString(app_name);
                switch (listType) {
                case ListNearest:
                        dialogTitle += " - " + getString(stationlist_nearbystations);
                        break;
                case ListSearch:
                        dialogTitle += " - " + getString(stationlist_search);
                        break;
                case ListFavorites:
                        dialogTitle += " - " + getString(stationlist_favorites);
                        break;
                default:
                        dialogTitle = "";//not possible                                 
                }
        
                setTitle(dialogTitle);
                
        }
        
                
    @Override 
    public void onSaveInstanceState(Bundle outState) 
    {
        if (dialog != null && dialog.isShowing())
                dialog.dismiss();
        outState.putSerializable("stations", (StationBean) stations);
        
    }
        
        
        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
                MenuItem item;
                
                item = menu.add(0, OPTIONS_MAP, 0, getString(stationlist_stationmap));
                item.setIcon(android.R.drawable.ic_menu_mapmode);
                
                item = menu.add(0, OPTIONS_GPSINFO, 0, getString(stationlist_gpsinfo));
                item.setIcon(android.R.drawable.ic_menu_mapmode);               
                
                return true;
        }

        @Override
        public boolean onOptionsItemSelected(MenuItem item) {
                boolean retval = true;

                //TODO: Cleanup
                switch (item.getItemId()) {
                case OPTIONS_MAP:
                        
                        Intent intent = new Intent(this,StationMapView.class);
                        
                        ArrayList<GeoPair> stationPoints = new ArrayList<GeoPair>();
                        for (StationEntry st : stations.entries ) {
                                stationPoints.add( new GeoPair(st.getLatitude(), st.getLongitude(), st.getName()) );
                        }
                        
                        intent.putExtra("stations", stationPoints);
                        
                        startActivity(intent);
                        break;
                case OPTIONS_GPSINFO:
                        Location loc = locationLookup.getLocation();
                        StringBuffer message = new StringBuffer();
                        message.append( getString(stationlist_locationinfo) ).append(":\n");
                        if (loc != null) {
                                message.append( getString(stationlist_obtainedby) ).append( loc.getProvider() ).append("\n");
                                message.append( getString(stationlist_accuracy) ).append( (int)loc.getAccuracy()).append("m\n");
                                message.append( getString(stationlist_latitude) ).append( (float)loc.getLatitude()).append("\n");
                                message.append( getString(stationlist_longitude) ).append( (float)loc.getLongitude() ).append("\n");
                        } else {
                                message.append( getString(stationlist_nolocation) );
                        }                       
                        
                        MessageBox.showMessage(this, message.toString(), false);
                        break;
                default:
                        retval = super.onOptionsItemSelected(item);
                }
                
                return retval;
        }
        
        
        @Override
        public boolean onContextItemSelected(MenuItem item) {
                contextMenu.onContextItemSelected(item);
                return true;


        }
        
        public void showMessageAndClose(String message) {
                AlertDialog.Builder builder = new AlertDialog.Builder(this);
                builder.setMessage(message)
                .setCancelable(false)
                .setPositiveButton("OK", new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int id) {
                                dialog.dismiss();
                                StationList.this.finish();
                        }
                })
                .show();
        }


        @Override
        protected Dialog onCreateDialog(int id) {
                switch (id) {
                case DLG_PROGRESS:
                        ProgressDialog dlg = new ProgressDialog(this);
                        dlg.setMessage( getString(stationlist_waitforlocation) );
                        dlg.setCancelable(false);
                        return dlg;                     
                case DLG_STATIONNAME:
                        LayoutInflater factory = LayoutInflater.from(this); 
                        final View rootView = factory.inflate(R.layout.textinput, null);
                        
                        
                        AlertDialog.Builder builder = new AlertDialog.Builder(this);
                        
                        builder.setTitle( getString(stationlist_stationsearch) );
                        builder.setView(rootView);
                        builder.setCancelable(true);
                        builder.setPositiveButton( getString(generic_search), new DialogInterface.OnClickListener() {
                                public void onClick(DialogInterface dialog, int which) {
                                        EditText et = (EditText) rootView.findViewById(R.id.EditText);
                                        dialog.dismiss();
                                        String search = et.getText().toString().trim();
                                        if (search.length() >= 2) {
                                                startNameSearch(search);
                                        } else {
                                                showMessageAndClose( getString(stationlist_twocharmin) );
                                        }
                                }
                        });
                        builder.setNegativeButton(getString(generic_cancel), new DialogInterface.OnClickListener() {
                                public void onClick(DialogInterface dialog, int which) {
                                        dialog.dismiss();
                                        StationList.this.finish(); // Close this Activity
                                }
                        });                     
                        return builder.create();
                        
                default:
                        return super.onCreateDialog(id);                
                }
                
        }
        
        
        @Override
        protected void onPrepareDialog(int id, Dialog dialog) {
                super.onPrepareDialog(id, dialog);
                switch (id) {
                case DLG_PROGRESS:
                        this.dialog = (ProgressDialog) dialog;
                        if (!dialogMessage.equals("")) {
                                this.dialog.setMessage(dialogMessage);
                                dialogMessage = "";
                        }
                        break;
                }
        }
        
        @Override
        protected void onListItemClick(ListView l, View v, int position, long id) {
                super.onListItemClick(l, v, position, id);
                                
                StationEntry station = stations.entries.get(position);
                
                if (isLaunchedforShortcut == true) {
                        Intent i = new Intent();
                        i.putExtra("station", station);
                        setResult(Activity.RESULT_OK, i);
                        finish();
                } else {                
                        Intent intent = new Intent(this, DepartureList.class);
                        intent.putExtra("stationbean", station);
                        startActivity(intent);
                }
        }

        /////////////////////////////////////////////////////////////
        //

        public void startLookup() {
                dialogMessage = getString( stationlist_waitforlocation );
                showDialog(DLG_PROGRESS);
                
                locationLookup.locateStations();
                stationsFetched.sendEmptyMessageDelayed(0, 500);
        }
        
        void startNameSearch(String name) {
                dialogMessage = getString( stationlist_findbyname );
                showDialog(DLG_PROGRESS);

                findStationsTask = new FindStationsTask();
                findStationsTask.searchByName(name);
                findStationsTask.execute();
                
        }
        
        public void startFavoriteLookup() {
                
                if (favorites.size() > 0) {
                        dialogMessage = getString( stationlist_loadfavorites );
                        showDialog(DLG_PROGRESS);

                        findStationsTask = new FindStationsTask();
                        findStationsTask.searchByIds( favorites.toString() );
                        findStationsTask.execute();
                } else {
                        showMessageAndClose( getString( stationlist_nofavorites ) );
                }
        }


        void startLocatorTask()
        {
                dialogMessage = getString( stationlist_findingnearby ); 
                showDialog(DLG_PROGRESS);               
                
                findStationsTask = new FindStationsTask();
                findStationsTask.searchByLocation( locationLookup.getLocation() );
                findStationsTask.execute();     
        }
                
        
        ////////////////////////////////////////////////////////////////////////////
        // Inner classes

        class StationsFetchedHandler extends Handler {
                @Override
                public void handleMessage(Message msg) {

                        LocationLookup.LookupStates state = locationLookup.getState();


                        switch (state) {
                        case GOTLOCATION:
                                dismissDialog(DLG_PROGRESS);

                                startLocatorTask();

                                return;

                        case NOPROVIDER:
                                dismissDialog(DLG_PROGRESS);
                                MessageBox.showMessage(StationList.this, getString(stationlist_nolocationprovider), true );
                                //StationList.this.finish();
                                return;
                        }


                        if (locationLookup.elapsedTime() >=  GPS_TIMEOUT_MS) {
                                dismissDialog(DLG_PROGRESS);

                                locationLookup.stopSearch();

                                if (locationLookup.hasLocation()) {
                                        startLocatorTask();
                                } else {                                                
                                        AlertDialog.Builder builder = new AlertDialog.Builder(StationList.this);                                                
                                        builder.setMessage(  getString( stationlist_gpstimeout) );
                                        builder.setCancelable(true);
                                        builder.setPositiveButton(getString(generic_retry), new DialogInterface.OnClickListener() {
                                                public void onClick(DialogInterface dialog, int id) {
                                                        dialog.dismiss();
                                                        startLookup();

                                                }
                                        });
                                        builder.setNegativeButton( getString(generic_cancel), new DialogInterface.OnClickListener() {
                                                public void onClick(DialogInterface dialog, int id) {
                                                        dialog.dismiss();
                                                        StationList.this.finish(); // Close this Activity
                                                }                                                       
                                        });
                                        builder.show(); 

                                }
                        } else {
                                if (locationLookup.hasGps()) {
                                        int count = locationLookup.getSatCount();
                                        String dialogMessage = getString( stationlist_waitforlocation ) + "\n" + getString( stationlist_satellitecount ) + ": " + count;
                                        dialog.setMessage( dialogMessage );
                                }
                                this.sendEmptyMessageDelayed(0, 500);
                        }
                        
                }
        }


        class FindStationsTask extends AsyncTask<Void,Void,Void> {
                
                LookupMethod method = LookupMethod.MethodNone;
                String name;
                Location loc;
                String ids;
                
                public void searchByName(String n) {
                        
                        method = LookupMethod.ByName;
                        name = n;
                }
                
                public void searchByLocation(Location l) {
                        method = LookupMethod.ByLocation;
                        loc = l;
                }
                
                public void searchByIds(String id) {
                        
                        method = LookupMethod.ByList;
                        ids = id;
                }
                
                @Override
                protected void onPreExecute() {

                        if (method.equals(LookupMethod.MethodNone))
                                throw new RuntimeException("Method not set");
                        super.onPreExecute();
                }
                
                @Override
                protected Void doInBackground(Void... params) {

                        switch (method) {
                        case ByLocation:
                                stations = stationProvider.lookupStationsByLocation(loc);
                                break;
                        case ByName:
                                stations = stationProvider.lookupStationsByName(name);
                                break;
                        case ByList:
                                stations = stationProvider.lookupStationsByIds(ids);
                                break;
                        default:
                                stations = null; // not possible        
                        }
                        
                        
                        return null;
                }

                @Override
                protected void onPostExecute(Void result) {
                        super.onPostExecute(result);
                        dialog.dismiss();
                        
                        
                        if (stations != null) {                         
                                if (stations.entries.size() == 0) {
                                        showMessageAndClose(getString(stationlist_nostations));
                                }

                                StationList.this.getListView().invalidateViews();
                                adapter.setStations( stations );                                
                                
                                
                        } else { //communication or parse errors
                                AlertDialog.Builder builder = new AlertDialog.Builder(StationList.this);                                                
                                builder.setMessage(getString(stationlist_fetcherror));                          
                                builder.setCancelable(true);
                                builder.setPositiveButton(getString(generic_retry), new DialogInterface.OnClickListener() {
                                        public void onClick(DialogInterface dialog, int id) {
                                                dialog.dismiss();
                                                
                                                Runnable runner = null;
                                                switch (method) {
                                                case ByLocation:
                                                        runner = new Runnable() {
                                                                @Override
                                                                public void run() {
                                                                        startLocatorTask();                                                             
                                                                }
                                                        };
                                                        break;
                                                case ByName:
                                                        runner = new Runnable() {
                                                                @Override
                                                                public void run() {
                                                                        startNameSearch( FindStationsTask.this.name );
                                                                }
                                                        };
                                                        break;
                                                case ByList:
                                                        runner = new Runnable() {
                                                                @Override
                                                                public void run() {
                                                                        startFavoriteLookup();
                                                                }
                                                        };
                                                        break;
                                                }
                                                
                                                stationsFetched.post( runner );
                                        }
                                });
                                builder.setNegativeButton(getString(generic_cancel), new DialogInterface.OnClickListener() {
                                        public void onClick(DialogInterface dialog, int id) {
                                                dialog.dismiss();
                                                StationList.this.finish();
                                        }                                                       
                                });
                                
                                builder.show(); 
                        }
                }
        }
        
        
        class FavoritesMenu implements OnCreateContextMenuListener {
                private final static int FAVORITES_ADD = 9001;
                private final static int FAVORITES_REMOVE = 9002;
                
                private int selectedPosition;
                
                
                @Override
                public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
                                                
                        AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) menuInfo;
                        selectedPosition = info.position;
                        int stationID = stations.entries.get(selectedPosition).getId();

                        if (!favorites.contains(stationID)) {
                                menu.add(0, FAVORITES_ADD, 0, getString(stationlist_addfavorite) );
                        } else {
                                menu.add(0, FAVORITES_REMOVE, 0, getString(stationlist_removefavorite) );
                        }
                        
                }
                
                public void onContextItemSelected(MenuItem item) {
                        StationEntry sb = stations.entries.get(selectedPosition);
                        
                        int stationID = sb.getId();
                        if (item.getItemId() == FAVORITES_ADD) {
                                favorites.add(stationID);
                                Toast.makeText(StationList.this, getString(stationlist_stationadded), Toast.LENGTH_SHORT).show();
                        } else {
                                
                                favorites.remove(stationID);
                                Toast.makeText(StationList.this, getString(stationlist_stationremoved), Toast.LENGTH_SHORT).show();
                                
                                
                                if (listType.equals( WelcomeScreen.ListType.ListFavorites) ) {
                                        stations.entries.remove(selectedPosition);
                                        adapter.notifyDataSetChanged();
                                }
                        }
                        Editor ed = prefs.edit();
                        ed.putString("favorites", favorites.toString());
                        ed.commit();
                }
        }
}
1	package dk.thoerup.traininfo;
2
3	import static dk.thoerup.traininfo.R.string.app_name;
4	import static dk.thoerup.traininfo.R.string.generic_cancel;
5	import static dk.thoerup.traininfo.R.string.generic_retry;
6	import static dk.thoerup.traininfo.R.string.generic_search;
7	import static dk.thoerup.traininfo.R.string.stationlist_accuracy;
8	import static dk.thoerup.traininfo.R.string.stationlist_addfavorite;
9	import static dk.thoerup.traininfo.R.string.stationlist_favorites;
10	import static dk.thoerup.traininfo.R.string.stationlist_fetcherror;
11	import static dk.thoerup.traininfo.R.string.stationlist_findbyname;
12	import static dk.thoerup.traininfo.R.string.stationlist_findingnearby;
13	import static dk.thoerup.traininfo.R.string.stationlist_gpsinfo;
14	import static dk.thoerup.traininfo.R.string.stationlist_gpstimeout;
15	import static dk.thoerup.traininfo.R.string.stationlist_latitude;
16	import static dk.thoerup.traininfo.R.string.stationlist_loadfavorites;
17	import static dk.thoerup.traininfo.R.string.stationlist_locationinfo;
18	import static dk.thoerup.traininfo.R.string.stationlist_longitude;
19	import static dk.thoerup.traininfo.R.string.stationlist_nearbystations;
20	import static dk.thoerup.traininfo.R.string.stationlist_nofavorites;
21	import static dk.thoerup.traininfo.R.string.stationlist_nolocation;
22	import static dk.thoerup.traininfo.R.string.stationlist_nolocationprovider;
23	import static dk.thoerup.traininfo.R.string.stationlist_nostations;
24	import static dk.thoerup.traininfo.R.string.stationlist_obtainedby;
25	import static dk.thoerup.traininfo.R.string.stationlist_removefavorite;
26	import static dk.thoerup.traininfo.R.string.stationlist_search;
27	import static dk.thoerup.traininfo.R.string.stationlist_stationadded;
28	import static dk.thoerup.traininfo.R.string.stationlist_stationmap;
29	import static dk.thoerup.traininfo.R.string.stationlist_stationremoved;
30	import static dk.thoerup.traininfo.R.string.stationlist_stationsearch;
31	import static dk.thoerup.traininfo.R.string.stationlist_twocharmin;
32	import static dk.thoerup.traininfo.R.string.stationlist_waitforlocation;
33	import static dk.thoerup.traininfo.R.string.stationlist_satellitecount;
34
35	import java.util.ArrayList;
36
37	import android.app.Activity;
38	import android.app.AlertDialog;
39	import android.app.Dialog;
40	import android.app.ListActivity;
41	import android.app.ProgressDialog;
42	import android.content.DialogInterface;
43	import android.content.Intent;
44	import android.content.SharedPreferences;
45	import android.content.SharedPreferences.Editor;
46	import android.location.Location;
47	import android.os.AsyncTask;
48	import android.os.Bundle;
49	import android.os.Handler;
50	import android.os.Message;
51	import android.view.ContextMenu;
52	import android.view.LayoutInflater;
53	import android.view.Menu;
54	import android.view.MenuItem;
55	import android.view.View;
56	import android.view.ContextMenu.ContextMenuInfo;
57	import android.view.View.OnCreateContextMenuListener;
58	import android.widget.AdapterView;
59	import android.widget.EditText;
60	import android.widget.ListView;
61	import android.widget.Toast;
62	import dk.thoerup.android.traininfo.common.StationBean;
63	import dk.thoerup.android.traininfo.common.StationBean.StationEntry;
64	import dk.thoerup.traininfo.provider.ProviderFactory;
65	import dk.thoerup.traininfo.provider.StationProvider;
66	import dk.thoerup.traininfo.stationmap.GeoPair;
67	import dk.thoerup.traininfo.stationmap.StationMapView;
68	import dk.thoerup.traininfo.util.IntSet;
69	import dk.thoerup.traininfo.util.MessageBox;
70
71	public class StationList extends ListActivity {
72
73
74
75	public static final int OPTIONS_MAP = 2003;
76	public static final int OPTIONS_GPSINFO = 2004;
77
78	public static final int DLG_PROGRESS = 3001;
79	public static final int DLG_STATIONNAME = 3002;
80
81
82	public static final int GPS_TIMEOUT_MS = 15000; //how long are we willing to wait for gps fix -in milliseconds
83
84
85	static enum LookupMethod {
86	ByLocation,
87	ByName,
88	ByList,
89	MethodNone
90	}
91
92
93	String dialogMessage = "";
94	ProgressDialog dialog;
95	LocationLookup locationLookup = null;
96	FindStationsTask findStationsTask;
97	StationsFetchedHandler stationsFetched = new StationsFetchedHandler();
98
99	//GeoPair location = new GeoPair();
100
101	boolean isLaunchedforShortcut;
102
103	StationBean stations = new StationBean();
104
105	StationProvider stationProvider = ProviderFactory.getStationProvider();
106
107	StationListAdapter adapter = null;
108
109	FavoritesMenu contextMenu = new FavoritesMenu();
110	IntSet favorites = new IntSet();
111
112	WelcomeScreen.ListType listType;
113	SharedPreferences prefs;
114
115	///////////////////////////////////////////////////////////////////////////////////////////
116	//Activity call backs
117
118
119	@Override
120	public void onCreate(Bundle savedInstanceState) {
121	super.onCreate(savedInstanceState);
122	setContentView(R.layout.stationlist);
123
124
125	adapter = new StationListAdapter(this);
126	setListAdapter(adapter);
127
128	ListView lv = getListView();
129	lv.setOnCreateContextMenuListener(contextMenu);
130
131	locationLookup = new LocationLookup(this);
132
133
134	prefs = getSharedPreferences("TrainStation", 0);
135	String favoriteString = prefs.getString("favorites", "");
136	if (! favoriteString.equals("") ) {
137	favorites.fromString(favoriteString);
138	}
139
140	listType = (WelcomeScreen.ListType) getIntent().getSerializableExtra("type");
141	setTitle();
142
143	isLaunchedforShortcut = getIntent().getBooleanExtra("shortcut", false);
144
145	ProviderFactory.purgeOldEntries(); //cleanup before fetching more data
146
147	if (savedInstanceState == null) {
148
149
150	switch (listType) {
151	case ListNearest:
152	startLookup();
153	break;
154	case ListSearch:
155	showDialog(DLG_STATIONNAME);
156	break;
157	case ListFavorites:
158	startFavoriteLookup();
159	break;
160	default:
161	// Not possible !?!
162	}
163
164	} else {
165	stations = (StationBean) savedInstanceState.getSerializable("stations");
166	adapter.setStations(stations);
167	}
168
169	}
170
171
172
173
174
175
176	@Override
177	protected void onDestroy() {
178	super.onDestroy();
179
180
181	if (locationLookup != null) {
182	locationLookup.stopSearch();
183	}
184	if (findStationsTask != null) {
185	findStationsTask.cancel(true);
186	}
187	}
188
189
190	protected void setTitle() {
191	String dialogTitle = getResources().getString(app_name);
192	switch (listType) {
193	case ListNearest:
194	dialogTitle += " - " + getString(stationlist_nearbystations);
195	break;
196	case ListSearch:
197	dialogTitle += " - " + getString(stationlist_search);
198	break;
199	case ListFavorites:
200	dialogTitle += " - " + getString(stationlist_favorites);
201	break;
202	default:
203	dialogTitle = "";//not possible
204	}
205
206	setTitle(dialogTitle);
207
208	}
209
210
211
212	@Override
213	public void onSaveInstanceState(Bundle outState)
214	{
215	if (dialog != null && dialog.isShowing())
216	dialog.dismiss();
217	outState.putSerializable("stations", (StationBean) stations);
218
219	}
220
221
222
223	@Override
224	public boolean onCreateOptionsMenu(Menu menu) {
225	MenuItem item;
226
227	item = menu.add(0, OPTIONS_MAP, 0, getString(stationlist_stationmap));
228	item.setIcon(android.R.drawable.ic_menu_mapmode);
229
230	item = menu.add(0, OPTIONS_GPSINFO, 0, getString(stationlist_gpsinfo));
231	item.setIcon(android.R.drawable.ic_menu_mapmode);
232
233	return true;
234	}
235
236	@Override
237	public boolean onOptionsItemSelected(MenuItem item) {
238	boolean retval = true;
239
240	//TODO: Cleanup
241	switch (item.getItemId()) {
242	case OPTIONS_MAP:
243
244	Intent intent = new Intent(this,StationMapView.class);
245
246	ArrayList<GeoPair> stationPoints = new ArrayList<GeoPair>();
247	for (StationEntry st : stations.entries ) {
248	stationPoints.add( new GeoPair(st.getLatitude(), st.getLongitude(), st.getName()) );
249	}
250
251	intent.putExtra("stations", stationPoints);
252
253	startActivity(intent);
254	break;
255	case OPTIONS_GPSINFO:
256	Location loc = locationLookup.getLocation();
257	StringBuffer message = new StringBuffer();
258	message.append( getString(stationlist_locationinfo) ).append(":\n");
259	if (loc != null) {
260	message.append( getString(stationlist_obtainedby) ).append( loc.getProvider() ).append("\n");
261	message.append( getString(stationlist_accuracy) ).append( (int)loc.getAccuracy()).append("m\n");
262	message.append( getString(stationlist_latitude) ).append( (float)loc.getLatitude()).append("\n");
263	message.append( getString(stationlist_longitude) ).append( (float)loc.getLongitude() ).append("\n");
264	} else {
265	message.append( getString(stationlist_nolocation) );
266	}
267
268	MessageBox.showMessage(this, message.toString(), false);
269	break;
270	default:
271	retval = super.onOptionsItemSelected(item);
272	}
273
274	return retval;
275	}
276
277
278
279	@Override
280	public boolean onContextItemSelected(MenuItem item) {
281	contextMenu.onContextItemSelected(item);
282	return true;
283
284
285	}
286
287	public void showMessageAndClose(String message) {
288	AlertDialog.Builder builder = new AlertDialog.Builder(this);
289	builder.setMessage(message)
290	.setCancelable(false)
291	.setPositiveButton("OK", new DialogInterface.OnClickListener() {
292	public void onClick(DialogInterface dialog, int id) {
293	dialog.dismiss();
294	StationList.this.finish();
295	}
296	})
297	.show();
298	}
299
300
301
302
303	@Override
304	protected Dialog onCreateDialog(int id) {
305	switch (id) {
306	case DLG_PROGRESS:
307	ProgressDialog dlg = new ProgressDialog(this);
308	dlg.setMessage( getString(stationlist_waitforlocation) );
309	dlg.setCancelable(false);
310	return dlg;
311	case DLG_STATIONNAME:
312	LayoutInflater factory = LayoutInflater.from(this);
313	final View rootView = factory.inflate(R.layout.textinput, null);
314
315
316	AlertDialog.Builder builder = new AlertDialog.Builder(this);
317
318	builder.setTitle( getString(stationlist_stationsearch) );
319	builder.setView(rootView);
320	builder.setCancelable(true);
321	builder.setPositiveButton( getString(generic_search), new DialogInterface.OnClickListener() {
322	public void onClick(DialogInterface dialog, int which) {
323	EditText et = (EditText) rootView.findViewById(R.id.EditText);
324	dialog.dismiss();
325	String search = et.getText().toString().trim();
326	if (search.length() >= 2) {
327	startNameSearch(search);
328	} else {
329	showMessageAndClose( getString(stationlist_twocharmin) );
330	}
331	}
332	});
333	builder.setNegativeButton(getString(generic_cancel), new DialogInterface.OnClickListener() {
334	public void onClick(DialogInterface dialog, int which) {
335	dialog.dismiss();
336	StationList.this.finish(); // Close this Activity
337	}
338	});
339	return builder.create();
340
341	default:
342	return super.onCreateDialog(id);
343	}
344
345	}
346
347
348	@Override
349	protected void onPrepareDialog(int id, Dialog dialog) {
350	super.onPrepareDialog(id, dialog);
351	switch (id) {
352	case DLG_PROGRESS:
353	this.dialog = (ProgressDialog) dialog;
354	if (!dialogMessage.equals("")) {
355	this.dialog.setMessage(dialogMessage);
356	dialogMessage = "";
357	}
358	break;
359	}
360	}
361
362	@Override
363	protected void onListItemClick(ListView l, View v, int position, long id) {
364	super.onListItemClick(l, v, position, id);
365
366	StationEntry station = stations.entries.get(position);
367
368	if (isLaunchedforShortcut == true) {
369	Intent i = new Intent();
370	i.putExtra("station", station);
371	setResult(Activity.RESULT_OK, i);
372	finish();
373	} else {
374	Intent intent = new Intent(this, DepartureList.class);
375	intent.putExtra("stationbean", station);
376	startActivity(intent);
377	}
378	}
379
380	/////////////////////////////////////////////////////////////
381	//
382
383	public void startLookup() {
384	dialogMessage = getString( stationlist_waitforlocation );
385	showDialog(DLG_PROGRESS);
386
387	locationLookup.locateStations();
388	stationsFetched.sendEmptyMessageDelayed(0, 500);
389	}
390
391	void startNameSearch(String name) {
392	dialogMessage = getString( stationlist_findbyname );
393	showDialog(DLG_PROGRESS);
394
395	findStationsTask = new FindStationsTask();
396	findStationsTask.searchByName(name);
397	findStationsTask.execute();
398
399	}
400
401	public void startFavoriteLookup() {
402
403	if (favorites.size() > 0) {
404	dialogMessage = getString( stationlist_loadfavorites );
405	showDialog(DLG_PROGRESS);
406
407	findStationsTask = new FindStationsTask();
408	findStationsTask.searchByIds( favorites.toString() );
409	findStationsTask.execute();
410	} else {
411	showMessageAndClose( getString( stationlist_nofavorites ) );
412	}
413	}
414
415
416
417	void startLocatorTask()
418	{
419	dialogMessage = getString( stationlist_findingnearby );
420	showDialog(DLG_PROGRESS);
421
422	findStationsTask = new FindStationsTask();
423	findStationsTask.searchByLocation( locationLookup.getLocation() );
424	findStationsTask.execute();
425	}
426
427
428	////////////////////////////////////////////////////////////////////////////
429	// Inner classes
430
431	class StationsFetchedHandler extends Handler {
432	@Override
433	public void handleMessage(Message msg) {
434
435	LocationLookup.LookupStates state = locationLookup.getState();
436
437
438	switch (state) {
439	case GOTLOCATION:
440	dismissDialog(DLG_PROGRESS);
441
442	startLocatorTask();
443
444	return;
445
446	case NOPROVIDER:
447	dismissDialog(DLG_PROGRESS);
448	MessageBox.showMessage(StationList.this, getString(stationlist_nolocationprovider), true );
449	//StationList.this.finish();
450	return;
451	}
452
453
454
455	if (locationLookup.elapsedTime() >= GPS_TIMEOUT_MS) {
456	dismissDialog(DLG_PROGRESS);
457
458	locationLookup.stopSearch();
459
460	if (locationLookup.hasLocation()) {
461	startLocatorTask();
462	} else {
463	AlertDialog.Builder builder = new AlertDialog.Builder(StationList.this);
464	builder.setMessage( getString( stationlist_gpstimeout) );
465	builder.setCancelable(true);
466	builder.setPositiveButton(getString(generic_retry), new DialogInterface.OnClickListener() {
467	public void onClick(DialogInterface dialog, int id) {
468	dialog.dismiss();
469	startLookup();
470
471	}
472	});
473	builder.setNegativeButton( getString(generic_cancel), new DialogInterface.OnClickListener() {
474	public void onClick(DialogInterface dialog, int id) {
475	dialog.dismiss();
476	StationList.this.finish(); // Close this Activity
477	}
478	});
479	builder.show();
480
481	}
482	} else {
483	if (locationLookup.hasGps()) {
484	int count = locationLookup.getSatCount();
485	String dialogMessage = getString( stationlist_waitforlocation ) + "\n" + getString( stationlist_satellitecount ) + ": " + count;
486	dialog.setMessage( dialogMessage );
487	}
488	this.sendEmptyMessageDelayed(0, 500);
489	}
490
491	}
492	}
493
494
495
496
497	class FindStationsTask extends AsyncTask<Void,Void,Void> {
498
499	LookupMethod method = LookupMethod.MethodNone;
500	String name;
501	Location loc;
502	String ids;
503
504	public void searchByName(String n) {
505
506	method = LookupMethod.ByName;
507	name = n;
508	}
509
510	public void searchByLocation(Location l) {
511	method = LookupMethod.ByLocation;
512	loc = l;
513	}
514
515	public void searchByIds(String id) {
516
517	method = LookupMethod.ByList;
518	ids = id;
519	}
520
521	@Override
522	protected void onPreExecute() {
523
524	if (method.equals(LookupMethod.MethodNone))
525	throw new RuntimeException("Method not set");
526	super.onPreExecute();
527	}
528
529	@Override
530	protected Void doInBackground(Void... params) {
531
532	switch (method) {
533	case ByLocation:
534	stations = stationProvider.lookupStationsByLocation(loc);
535	break;
536	case ByName:
537	stations = stationProvider.lookupStationsByName(name);
538	break;
539	case ByList:
540	stations = stationProvider.lookupStationsByIds(ids);
541	break;
542	default:
543	stations = null; // not possible
544	}
545
546
547	return null;
548	}
549
550	@Override
551	protected void onPostExecute(Void result) {
552	super.onPostExecute(result);
553	dialog.dismiss();
554
555
556	if (stations != null) {
557	if (stations.entries.size() == 0) {
558	showMessageAndClose(getString(stationlist_nostations));
559	}
560
561	StationList.this.getListView().invalidateViews();
562	adapter.setStations( stations );
563
564
565	} else { //communication or parse errors
566	AlertDialog.Builder builder = new AlertDialog.Builder(StationList.this);
567	builder.setMessage(getString(stationlist_fetcherror));
568	builder.setCancelable(true);
569	builder.setPositiveButton(getString(generic_retry), new DialogInterface.OnClickListener() {
570	public void onClick(DialogInterface dialog, int id) {
571	dialog.dismiss();
572
573	Runnable runner = null;
574	switch (method) {
575	case ByLocation:
576	runner = new Runnable() {
577	@Override
578	public void run() {
579	startLocatorTask();
580	}
581	};
582	break;
583	case ByName:
584	runner = new Runnable() {
585	@Override
586	public void run() {
587	startNameSearch( FindStationsTask.this.name );
588	}
589	};
590	break;
591	case ByList:
592	runner = new Runnable() {
593	@Override
594	public void run() {
595	startFavoriteLookup();
596	}
597	};
598	break;
599	}
600
601	stationsFetched.post( runner );
602	}
603	});
604	builder.setNegativeButton(getString(generic_cancel), new DialogInterface.OnClickListener() {
605	public void onClick(DialogInterface dialog, int id) {
606	dialog.dismiss();
607	StationList.this.finish();
608	}
609	});
610
611	builder.show();
612	}
613	}
614	}
615
616
617	class FavoritesMenu implements OnCreateContextMenuListener {
618	private final static int FAVORITES_ADD = 9001;
619	private final static int FAVORITES_REMOVE = 9002;
620
621	private int selectedPosition;
622
623
624	@Override
625	public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
626
627	AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) menuInfo;
628	selectedPosition = info.position;
629	int stationID = stations.entries.get(selectedPosition).getId();
630
631	if (!favorites.contains(stationID)) {
632	menu.add(0, FAVORITES_ADD, 0, getString(stationlist_addfavorite) );
633	} else {
634	menu.add(0, FAVORITES_REMOVE, 0, getString(stationlist_removefavorite) );
635	}
636
637	}
638
639	public void onContextItemSelected(MenuItem item) {
640	StationEntry sb = stations.entries.get(selectedPosition);
641
642	int stationID = sb.getId();
643	if (item.getItemId() == FAVORITES_ADD) {
644	favorites.add(stationID);
645	Toast.makeText(StationList.this, getString(stationlist_stationadded), Toast.LENGTH_SHORT).show();
646	} else {
647
648	favorites.remove(stationID);
649	Toast.makeText(StationList.this, getString(stationlist_stationremoved), Toast.LENGTH_SHORT).show();
650
651
652	if (listType.equals( WelcomeScreen.ListType.ListFavorites) ) {
653	stations.entries.remove(selectedPosition);
654	adapter.notifyDataSetChanged();
655	}
656	}
657	Editor ed = prefs.edit();
658	ed.putString("favorites", favorites.toString());
659	ed.commit();
660	}
661	}
662	}