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_satellitecount;
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 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.util.Log;
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:
                                startNearestLookup();
                                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) {
                                                startNameLookup(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 startNearestLookup() {
                dialogMessage = getString( stationlist_waitforlocation );
                showDialog(DLG_PROGRESS);
                
                locationLookup.locateStations();
                stationsFetched.sendEmptyMessageDelayed(0, 500);
        }
        
        void startNameLookup(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;
                        case IDLE:
                                Log.e("TrainInfo", "How did this happen ???");
                                dismissDialog(DLG_PROGRESS); // how did we get here ??
                                return;
                                
                        }


                        if (locationLookup.elapsedTime() >=  GPS_TIMEOUT_MS) {
                                try {
                                        dismissDialog(DLG_PROGRESS);
                                } catch (IllegalArgumentException ex) {
                                        // I get  stacktraces that reports an exception is thrown here - 
                                        // but i can not recreate the situation that causes said exception
                                        Log.e("TrainInfo", "Why the f*** is this exception thrown here ?? " + ex.getMessage() );
                                }

                                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();
                                                        startNearestLookup();

                                                }
                                        });
                                        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() {
                                                                        startNameLookup( 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_satellitecount;
27	import static dk.thoerup.traininfo.R.string.stationlist_search;
28	import static dk.thoerup.traininfo.R.string.stationlist_stationadded;
29	import static dk.thoerup.traininfo.R.string.stationlist_stationmap;
30	import static dk.thoerup.traininfo.R.string.stationlist_stationremoved;
31	import static dk.thoerup.traininfo.R.string.stationlist_stationsearch;
32	import static dk.thoerup.traininfo.R.string.stationlist_twocharmin;
33	import static dk.thoerup.traininfo.R.string.stationlist_waitforlocation;
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.util.Log;
52	import android.view.ContextMenu;
53	import android.view.LayoutInflater;
54	import android.view.Menu;
55	import android.view.MenuItem;
56	import android.view.View;
57	import android.view.ContextMenu.ContextMenuInfo;
58	import android.view.View.OnCreateContextMenuListener;
59	import android.widget.AdapterView;
60	import android.widget.EditText;
61	import android.widget.ListView;
62	import android.widget.Toast;
63	import dk.thoerup.android.traininfo.common.StationBean;
64	import dk.thoerup.android.traininfo.common.StationBean.StationEntry;
65	import dk.thoerup.traininfo.provider.ProviderFactory;
66	import dk.thoerup.traininfo.provider.StationProvider;
67	import dk.thoerup.traininfo.stationmap.GeoPair;
68	import dk.thoerup.traininfo.stationmap.StationMapView;
69	import dk.thoerup.traininfo.util.IntSet;
70	import dk.thoerup.traininfo.util.MessageBox;
71
72	public class StationList extends ListActivity {
73
74
75
76	public static final int OPTIONS_MAP = 2003;
77	public static final int OPTIONS_GPSINFO = 2004;
78
79	public static final int DLG_PROGRESS = 3001;
80	public static final int DLG_STATIONNAME = 3002;
81
82
83	public static final int GPS_TIMEOUT_MS = 15000; //how long are we willing to wait for gps fix -in milliseconds
84
85
86	static enum LookupMethod {
87	ByLocation,
88	ByName,
89	ByList,
90	MethodNone
91	}
92
93
94	String dialogMessage = "";
95	ProgressDialog dialog;
96	LocationLookup locationLookup = null;
97	FindStationsTask findStationsTask;
98	StationsFetchedHandler stationsFetched = new StationsFetchedHandler();
99
100	//GeoPair location = new GeoPair();
101
102	boolean isLaunchedforShortcut;
103
104	StationBean stations = new StationBean();
105
106	StationProvider stationProvider = ProviderFactory.getStationProvider();
107
108	StationListAdapter adapter = null;
109
110	FavoritesMenu contextMenu = new FavoritesMenu();
111	IntSet favorites = new IntSet();
112
113	WelcomeScreen.ListType listType;
114	SharedPreferences prefs;
115
116	///////////////////////////////////////////////////////////////////////////////////////////
117	//Activity call backs
118
119
120	@Override
121	public void onCreate(Bundle savedInstanceState) {
122	super.onCreate(savedInstanceState);
123	setContentView(R.layout.stationlist);
124
125
126	adapter = new StationListAdapter(this);
127	setListAdapter(adapter);
128
129	ListView lv = getListView();
130	lv.setOnCreateContextMenuListener(contextMenu);
131
132	locationLookup = new LocationLookup(this);
133
134
135	prefs = getSharedPreferences("TrainStation", 0);
136	String favoriteString = prefs.getString("favorites", "");
137	if (! favoriteString.equals("") ) {
138	favorites.fromString(favoriteString);
139	}
140
141	listType = (WelcomeScreen.ListType) getIntent().getSerializableExtra("type");
142	setTitle();
143
144	isLaunchedforShortcut = getIntent().getBooleanExtra("shortcut", false);
145
146	ProviderFactory.purgeOldEntries(); //cleanup before fetching more data
147
148	if (savedInstanceState == null) {
149
150
151	switch (listType) {
152	case ListNearest:
153	startNearestLookup();
154	break;
155	case ListSearch:
156	showDialog(DLG_STATIONNAME);
157	break;
158	case ListFavorites:
159	startFavoriteLookup();
160	break;
161	default:
162	// Not possible !?!
163	}
164
165	} else {
166	stations = (StationBean) savedInstanceState.getSerializable("stations");
167	adapter.setStations(stations);
168	}
169
170	}
171
172
173
174
175
176
177	@Override
178	protected void onDestroy() {
179	super.onDestroy();
180
181
182	if (locationLookup != null) {
183	locationLookup.stopSearch();
184	}
185	if (findStationsTask != null) {
186	findStationsTask.cancel(true);
187	}
188	}
189
190
191	protected void setTitle() {
192	String dialogTitle = getResources().getString(app_name);
193	switch (listType) {
194	case ListNearest:
195	dialogTitle += " - " + getString(stationlist_nearbystations);
196	break;
197	case ListSearch:
198	dialogTitle += " - " + getString(stationlist_search);
199	break;
200	case ListFavorites:
201	dialogTitle += " - " + getString(stationlist_favorites);
202	break;
203	default:
204	dialogTitle = "";//not possible
205	}
206
207	setTitle(dialogTitle);
208
209	}
210
211
212
213	@Override
214	public void onSaveInstanceState(Bundle outState)
215	{
216	if (dialog != null && dialog.isShowing())
217	dialog.dismiss();
218	outState.putSerializable("stations", (StationBean) stations);
219
220	}
221
222
223
224	@Override
225	public boolean onCreateOptionsMenu(Menu menu) {
226	MenuItem item;
227
228	item = menu.add(0, OPTIONS_MAP, 0, getString(stationlist_stationmap));
229	item.setIcon(android.R.drawable.ic_menu_mapmode);
230
231	item = menu.add(0, OPTIONS_GPSINFO, 0, getString(stationlist_gpsinfo));
232	item.setIcon(android.R.drawable.ic_menu_mapmode);
233
234	return true;
235	}
236
237	@Override
238	public boolean onOptionsItemSelected(MenuItem item) {
239	boolean retval = true;
240
241	//TODO: Cleanup
242	switch (item.getItemId()) {
243	case OPTIONS_MAP:
244
245	Intent intent = new Intent(this,StationMapView.class);
246
247	ArrayList<GeoPair> stationPoints = new ArrayList<GeoPair>();
248	for (StationEntry st : stations.entries ) {
249	stationPoints.add( new GeoPair(st.getLatitude(), st.getLongitude(), st.getName()) );
250	}
251
252	intent.putExtra("stations", stationPoints);
253
254	startActivity(intent);
255	break;
256	case OPTIONS_GPSINFO:
257	Location loc = locationLookup.getLocation();
258	StringBuffer message = new StringBuffer();
259	message.append( getString(stationlist_locationinfo) ).append(":\n");
260	if (loc != null) {
261	message.append( getString(stationlist_obtainedby) ).append( loc.getProvider() ).append("\n");
262	message.append( getString(stationlist_accuracy) ).append( (int)loc.getAccuracy()).append("m\n");
263	message.append( getString(stationlist_latitude) ).append( (float)loc.getLatitude()).append("\n");
264	message.append( getString(stationlist_longitude) ).append( (float)loc.getLongitude() ).append("\n");
265	} else {
266	message.append( getString(stationlist_nolocation) );
267	}
268
269	MessageBox.showMessage(this, message.toString(), false);
270	break;
271	default:
272	retval = super.onOptionsItemSelected(item);
273	}
274
275	return retval;
276	}
277
278
279
280	@Override
281	public boolean onContextItemSelected(MenuItem item) {
282	contextMenu.onContextItemSelected(item);
283	return true;
284
285
286	}
287
288	public void showMessageAndClose(String message) {
289	AlertDialog.Builder builder = new AlertDialog.Builder(this);
290	builder.setMessage(message)
291	.setCancelable(false)
292	.setPositiveButton("OK", new DialogInterface.OnClickListener() {
293	public void onClick(DialogInterface dialog, int id) {
294	dialog.dismiss();
295	StationList.this.finish();
296	}
297	})
298	.show();
299	}
300
301
302
303
304	@Override
305	protected Dialog onCreateDialog(int id) {
306	switch (id) {
307	case DLG_PROGRESS:
308	ProgressDialog dlg = new ProgressDialog(this);
309	dlg.setMessage( getString(stationlist_waitforlocation) );
310	dlg.setCancelable(false);
311	return dlg;
312	case DLG_STATIONNAME:
313	LayoutInflater factory = LayoutInflater.from(this);
314	final View rootView = factory.inflate(R.layout.textinput, null);
315
316
317	AlertDialog.Builder builder = new AlertDialog.Builder(this);
318
319	builder.setTitle( getString(stationlist_stationsearch) );
320	builder.setView(rootView);
321	builder.setCancelable(true);
322	builder.setPositiveButton( getString(generic_search), new DialogInterface.OnClickListener() {
323	public void onClick(DialogInterface dialog, int which) {
324	EditText et = (EditText) rootView.findViewById(R.id.EditText);
325	dialog.dismiss();
326	String search = et.getText().toString().trim();
327	if (search.length() >= 2) {
328	startNameLookup(search);
329	} else {
330	showMessageAndClose( getString(stationlist_twocharmin) );
331	}
332	}
333	});
334	builder.setNegativeButton(getString(generic_cancel), new DialogInterface.OnClickListener() {
335	public void onClick(DialogInterface dialog, int which) {
336	dialog.dismiss();
337	StationList.this.finish(); // Close this Activity
338	}
339	});
340	return builder.create();
341
342	default:
343	return super.onCreateDialog(id);
344	}
345
346	}
347
348
349	@Override
350	protected void onPrepareDialog(int id, Dialog dialog) {
351	super.onPrepareDialog(id, dialog);
352	switch (id) {
353	case DLG_PROGRESS:
354	this.dialog = (ProgressDialog) dialog;
355	if (!dialogMessage.equals("")) {
356	this.dialog.setMessage(dialogMessage);
357	dialogMessage = "";
358	}
359	break;
360	}
361	}
362
363	@Override
364	protected void onListItemClick(ListView l, View v, int position, long id) {
365	super.onListItemClick(l, v, position, id);
366
367	StationEntry station = stations.entries.get(position);
368
369	if (isLaunchedforShortcut == true) {
370	Intent i = new Intent();
371	i.putExtra("station", station);
372	setResult(Activity.RESULT_OK, i);
373	finish();
374	} else {
375	Intent intent = new Intent(this, DepartureList.class);
376	intent.putExtra("stationbean", station);
377	startActivity(intent);
378	}
379	}
380
381	/////////////////////////////////////////////////////////////
382	//
383
384	public void startNearestLookup() {
385	dialogMessage = getString( stationlist_waitforlocation );
386	showDialog(DLG_PROGRESS);
387
388	locationLookup.locateStations();
389	stationsFetched.sendEmptyMessageDelayed(0, 500);
390	}
391
392	void startNameLookup(String name) {
393	dialogMessage = getString( stationlist_findbyname );
394	showDialog(DLG_PROGRESS);
395
396	findStationsTask = new FindStationsTask();
397	findStationsTask.searchByName(name);
398	findStationsTask.execute();
399
400	}
401
402	public void startFavoriteLookup() {
403
404	if (favorites.size() > 0) {
405	dialogMessage = getString( stationlist_loadfavorites );
406	showDialog(DLG_PROGRESS);
407
408	findStationsTask = new FindStationsTask();
409	findStationsTask.searchByIds( favorites.toString() );
410	findStationsTask.execute();
411	} else {
412	showMessageAndClose( getString( stationlist_nofavorites ) );
413	}
414	}
415
416
417
418	void startLocatorTask()
419	{
420	dialogMessage = getString( stationlist_findingnearby );
421	showDialog(DLG_PROGRESS);
422
423	findStationsTask = new FindStationsTask();
424	findStationsTask.searchByLocation( locationLookup.getLocation() );
425	findStationsTask.execute();
426	}
427
428
429	////////////////////////////////////////////////////////////////////////////
430	// Inner classes
431
432	class StationsFetchedHandler extends Handler {
433	@Override
434	public void handleMessage(Message msg) {
435
436	LocationLookup.LookupStates state = locationLookup.getState();
437
438
439	switch (state) {
440	case GOTLOCATION:
441	dismissDialog(DLG_PROGRESS);
442
443	startLocatorTask();
444
445	return;
446
447	case NOPROVIDER:
448	dismissDialog(DLG_PROGRESS);
449	MessageBox.showMessage(StationList.this, getString(stationlist_nolocationprovider), true );
450	//StationList.this.finish();
451	return;
452	case IDLE:
453	Log.e("TrainInfo", "How did this happen ???");
454	dismissDialog(DLG_PROGRESS); // how did we get here ??
455	return;
456
457	}
458
459
460
461	if (locationLookup.elapsedTime() >= GPS_TIMEOUT_MS) {
462	try {
463	dismissDialog(DLG_PROGRESS);
464	} catch (IllegalArgumentException ex) {
465	// I get stacktraces that reports an exception is thrown here -
466	// but i can not recreate the situation that causes said exception
467	Log.e("TrainInfo", "Why the f*** is this exception thrown here ?? " + ex.getMessage() );
468	}
469
470	locationLookup.stopSearch();
471
472	if (locationLookup.hasLocation()) {
473	startLocatorTask();
474	} else {
475	AlertDialog.Builder builder = new AlertDialog.Builder(StationList.this);
476	builder.setMessage( getString( stationlist_gpstimeout) );
477	builder.setCancelable(true);
478	builder.setPositiveButton(getString(generic_retry), new DialogInterface.OnClickListener() {
479	public void onClick(DialogInterface dialog, int id) {
480	dialog.dismiss();
481	startNearestLookup();
482
483	}
484	});
485	builder.setNegativeButton( getString(generic_cancel), new DialogInterface.OnClickListener() {
486	public void onClick(DialogInterface dialog, int id) {
487	dialog.dismiss();
488	StationList.this.finish(); // Close this Activity
489	}
490	});
491	builder.show();
492
493	}
494	} else {
495	if (locationLookup.hasGps()) {
496	int count = locationLookup.getSatCount();
497	String dialogMessage = getString( stationlist_waitforlocation ) + "\n" + getString( stationlist_satellitecount ) + ": " + count;
498	dialog.setMessage( dialogMessage );
499	}
500	this.sendEmptyMessageDelayed(0, 500);
501	}
502
503	}
504	}
505
506
507
508
509	class FindStationsTask extends AsyncTask<Void,Void,Void> {
510
511	LookupMethod method = LookupMethod.MethodNone;
512	String name;
513	Location loc;
514	String ids;
515
516	public void searchByName(String n) {
517
518	method = LookupMethod.ByName;
519	name = n;
520	}
521
522	public void searchByLocation(Location l) {
523	method = LookupMethod.ByLocation;
524	loc = l;
525	}
526
527	public void searchByIds(String id) {
528
529	method = LookupMethod.ByList;
530	ids = id;
531	}
532
533	@Override
534	protected void onPreExecute() {
535
536	if (method.equals(LookupMethod.MethodNone))
537	throw new RuntimeException("Method not set");
538	super.onPreExecute();
539	}
540
541	@Override
542	protected Void doInBackground(Void... params) {
543
544	switch (method) {
545	case ByLocation:
546	stations = stationProvider.lookupStationsByLocation(loc);
547	break;
548	case ByName:
549	stations = stationProvider.lookupStationsByName(name);
550	break;
551	case ByList:
552	stations = stationProvider.lookupStationsByIds(ids);
553	break;
554	default:
555	stations = null; // not possible
556	}
557
558
559	return null;
560	}
561
562	@Override
563	protected void onPostExecute(Void result) {
564	super.onPostExecute(result);
565	dialog.dismiss();
566
567
568	if (stations != null) {
569	if (stations.entries.size() == 0) {
570	showMessageAndClose(getString(stationlist_nostations));
571	}
572
573	StationList.this.getListView().invalidateViews();
574	adapter.setStations( stations );
575
576
577	} else { //communication or parse errors
578	AlertDialog.Builder builder = new AlertDialog.Builder(StationList.this);
579	builder.setMessage(getString(stationlist_fetcherror));
580	builder.setCancelable(true);
581	builder.setPositiveButton(getString(generic_retry), new DialogInterface.OnClickListener() {
582	public void onClick(DialogInterface dialog, int id) {
583	dialog.dismiss();
584
585	Runnable runner = null;
586	switch (method) {
587	case ByLocation:
588	runner = new Runnable() {
589	@Override
590	public void run() {
591	startLocatorTask();
592	}
593	};
594	break;
595	case ByName:
596	runner = new Runnable() {
597	@Override
598	public void run() {
599	startNameLookup( FindStationsTask.this.name );
600	}
601	};
602	break;
603	case ByList:
604	runner = new Runnable() {
605	@Override
606	public void run() {
607	startFavoriteLookup();
608	}
609	};
610	break;
611	}
612
613	stationsFetched.post( runner );
614	}
615	});
616	builder.setNegativeButton(getString(generic_cancel), new DialogInterface.OnClickListener() {
617	public void onClick(DialogInterface dialog, int id) {
618	dialog.dismiss();
619	StationList.this.finish();
620	}
621	});
622
623	builder.show();
624	}
625	}
626	}
627
628
629	class FavoritesMenu implements OnCreateContextMenuListener {
630	private final static int FAVORITES_ADD = 9001;
631	private final static int FAVORITES_REMOVE = 9002;
632
633	private int selectedPosition;
634
635
636	@Override
637	public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
638
639	AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) menuInfo;
640	selectedPosition = info.position;
641	int stationID = stations.entries.get(selectedPosition).getId();
642
643	if (!favorites.contains(stationID)) {
644	menu.add(0, FAVORITES_ADD, 0, getString(stationlist_addfavorite) );
645	} else {
646	menu.add(0, FAVORITES_REMOVE, 0, getString(stationlist_removefavorite) );
647	}
648
649	}
650
651	public void onContextItemSelected(MenuItem item) {
652	StationEntry sb = stations.entries.get(selectedPosition);
653
654	int stationID = sb.getId();
655	if (item.getItemId() == FAVORITES_ADD) {
656	favorites.add(stationID);
657	Toast.makeText(StationList.this, getString(stationlist_stationadded), Toast.LENGTH_SHORT).show();
658	} else {
659
660	favorites.remove(stationID);
661	Toast.makeText(StationList.this, getString(stationlist_stationremoved), Toast.LENGTH_SHORT).show();
662
663
664	if (listType.equals( WelcomeScreen.ListType.ListFavorites) ) {
665	stations.entries.remove(selectedPosition);
666	adapter.notifyDataSetChanged();
667	}
668	}
669	Editor ed = prefs.edit();
670	ed.putString("favorites", favorites.toString());
671	ed.commit();
672	}
673	}
674	}