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.ContextMenu.ContextMenuInfo;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
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.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 = 103;
        public static final int OPTIONS_GPSINFO = 104;
        
        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();
                
                stationsFetched.removeMessages(0);
                
                
                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_info_details);
                boolean hasLoc = (locationLookup.getLocation() != null);
                item.setEnabled(hasLoc);
                
                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");
                         
                        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");
                                                
                        
                        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) {
                                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();
                                                        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.ContextMenu.ContextMenuInfo;
54	import android.view.LayoutInflater;
55	import android.view.Menu;
56	import android.view.MenuItem;
57	import android.view.View;
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.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 = 103;
77	public static final int OPTIONS_GPSINFO = 104;
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	stationsFetched.removeMessages(0);
182
183
184	if (locationLookup != null) {
185	locationLookup.stopSearch();
186	}
187	if (findStationsTask != null) {
188	findStationsTask.cancel(true);
189	}
190	}
191
192
193	protected void setTitle() {
194	String dialogTitle = getResources().getString(app_name);
195	switch (listType) {
196	case ListNearest:
197	dialogTitle += " - " + getString(stationlist_nearbystations);
198	break;
199	case ListSearch:
200	dialogTitle += " - " + getString(stationlist_search);
201	break;
202	case ListFavorites:
203	dialogTitle += " - " + getString(stationlist_favorites);
204	break;
205	default:
206	dialogTitle = "";//not possible
207	}
208
209	setTitle(dialogTitle);
210
211	}
212
213
214
215	@Override
216	public void onSaveInstanceState(Bundle outState)
217	{
218	if (dialog != null && dialog.isShowing())
219	dialog.dismiss();
220	outState.putSerializable("stations", (StationBean) stations);
221
222	}
223
224
225
226	@Override
227	public boolean onCreateOptionsMenu(Menu menu) {
228	MenuItem item;
229
230	item = menu.add(0, OPTIONS_MAP, 0, getString(stationlist_stationmap));
231	item.setIcon(android.R.drawable.ic_menu_mapmode);
232
233	item = menu.add(0, OPTIONS_GPSINFO, 0, getString(stationlist_gpsinfo));
234	item.setIcon(android.R.drawable.ic_menu_info_details);
235	boolean hasLoc = (locationLookup.getLocation() != null);
236	item.setEnabled(hasLoc);
237
238	return true;
239	}
240
241
242
243
244	@Override
245	public boolean onOptionsItemSelected(MenuItem item) {
246	boolean retval = true;
247
248	//TODO: Cleanup
249	switch (item.getItemId()) {
250	case OPTIONS_MAP:
251
252	Intent intent = new Intent(this,StationMapView.class);
253
254	ArrayList<GeoPair> stationPoints = new ArrayList<GeoPair>();
255	for (StationEntry st : stations.entries ) {
256	stationPoints.add( new GeoPair(st.getLatitude(), st.getLongitude(), st.getName()) );
257	}
258
259	intent.putExtra("stations", stationPoints);
260
261	startActivity(intent);
262	break;
263	case OPTIONS_GPSINFO:
264	Location loc = locationLookup.getLocation();
265	StringBuffer message = new StringBuffer();
266	message.append( getString(stationlist_locationinfo) ).append(":\n");
267
268	message.append( getString(stationlist_obtainedby) ).append( loc.getProvider() ).append("\n");
269	message.append( getString(stationlist_accuracy) ).append( (int)loc.getAccuracy()).append("m\n");
270	message.append( getString(stationlist_latitude) ).append( (float)loc.getLatitude()).append("\n");
271	message.append( getString(stationlist_longitude) ).append( (float)loc.getLongitude() ).append("\n");
272
273
274	MessageBox.showMessage(this, message.toString(), false);
275	break;
276	default:
277	retval = super.onOptionsItemSelected(item);
278	}
279
280	return retval;
281	}
282
283
284
285	@Override
286	public boolean onContextItemSelected(MenuItem item) {
287	contextMenu.onContextItemSelected(item);
288	return true;
289
290
291	}
292
293	public void showMessageAndClose(String message) {
294	AlertDialog.Builder builder = new AlertDialog.Builder(this);
295	builder.setMessage(message)
296	.setCancelable(false)
297	.setPositiveButton("OK", new DialogInterface.OnClickListener() {
298	public void onClick(DialogInterface dialog, int id) {
299	dialog.dismiss();
300	StationList.this.finish();
301	}
302	})
303	.show();
304	}
305
306
307
308
309	@Override
310	protected Dialog onCreateDialog(int id) {
311	switch (id) {
312	case DLG_PROGRESS:
313	ProgressDialog dlg = new ProgressDialog(this);
314	dlg.setMessage( getString(stationlist_waitforlocation) );
315	dlg.setCancelable(false);
316	return dlg;
317	case DLG_STATIONNAME:
318	LayoutInflater factory = LayoutInflater.from(this);
319	final View rootView = factory.inflate(R.layout.textinput, null);
320
321
322	AlertDialog.Builder builder = new AlertDialog.Builder(this);
323
324	builder.setTitle( getString(stationlist_stationsearch) );
325	builder.setView(rootView);
326	builder.setCancelable(true);
327	builder.setPositiveButton( getString(generic_search), new DialogInterface.OnClickListener() {
328	public void onClick(DialogInterface dialog, int which) {
329	EditText et = (EditText) rootView.findViewById(R.id.EditText);
330	dialog.dismiss();
331	String search = et.getText().toString().trim();
332	if (search.length() >= 2) {
333	startNameLookup(search);
334	} else {
335	showMessageAndClose( getString(stationlist_twocharmin) );
336	}
337	}
338	});
339	builder.setNegativeButton(getString(generic_cancel), new DialogInterface.OnClickListener() {
340	public void onClick(DialogInterface dialog, int which) {
341	dialog.dismiss();
342	StationList.this.finish(); // Close this Activity
343	}
344	});
345	return builder.create();
346
347	default:
348	return super.onCreateDialog(id);
349	}
350
351	}
352
353
354	@Override
355	protected void onPrepareDialog(int id, Dialog dialog) {
356	super.onPrepareDialog(id, dialog);
357	switch (id) {
358	case DLG_PROGRESS:
359	this.dialog = (ProgressDialog) dialog;
360	if (!dialogMessage.equals("")) {
361	this.dialog.setMessage(dialogMessage);
362	dialogMessage = "";
363	}
364	break;
365	}
366	}
367
368	@Override
369	protected void onListItemClick(ListView l, View v, int position, long id) {
370	super.onListItemClick(l, v, position, id);
371
372	StationEntry station = stations.entries.get(position);
373
374	if (isLaunchedforShortcut == true) {
375	Intent i = new Intent();
376	i.putExtra("station", station);
377	setResult(Activity.RESULT_OK, i);
378	finish();
379	} else {
380	Intent intent = new Intent(this, DepartureList.class);
381	intent.putExtra("stationbean", station);
382	startActivity(intent);
383	}
384	}
385
386	/////////////////////////////////////////////////////////////
387	//
388
389	public void startNearestLookup() {
390	dialogMessage = getString( stationlist_waitforlocation );
391	showDialog(DLG_PROGRESS);
392
393	locationLookup.locateStations();
394	stationsFetched.sendEmptyMessageDelayed(0, 500);
395	}
396
397	void startNameLookup(String name) {
398	dialogMessage = getString( stationlist_findbyname );
399	showDialog(DLG_PROGRESS);
400
401	findStationsTask = new FindStationsTask();
402	findStationsTask.searchByName(name);
403	findStationsTask.execute();
404
405	}
406
407	public void startFavoriteLookup() {
408
409	if (favorites.size() > 0) {
410	dialogMessage = getString( stationlist_loadfavorites );
411	showDialog(DLG_PROGRESS);
412
413	findStationsTask = new FindStationsTask();
414	findStationsTask.searchByIds( favorites.toString() );
415	findStationsTask.execute();
416	} else {
417	showMessageAndClose( getString( stationlist_nofavorites ) );
418	}
419	}
420
421
422
423	void startLocatorTask()
424	{
425	dialogMessage = getString( stationlist_findingnearby );
426	showDialog(DLG_PROGRESS);
427
428	findStationsTask = new FindStationsTask();
429	findStationsTask.searchByLocation( locationLookup.getLocation() );
430	findStationsTask.execute();
431	}
432
433
434	////////////////////////////////////////////////////////////////////////////
435	// Inner classes
436
437	class StationsFetchedHandler extends Handler {
438	@Override
439	public void handleMessage(Message msg) {
440
441	LocationLookup.LookupStates state = locationLookup.getState();
442
443
444	switch (state) {
445	case GOTLOCATION:
446	dismissDialog(DLG_PROGRESS);
447
448	startLocatorTask();
449
450	return;
451
452	case NOPROVIDER:
453	dismissDialog(DLG_PROGRESS);
454	MessageBox.showMessage(StationList.this, getString(stationlist_nolocationprovider), true );
455	//StationList.this.finish();
456	return;
457	case IDLE:
458	Log.e("TrainInfo", "How did this happen ???");
459	dismissDialog(DLG_PROGRESS); // how did we get here ??
460	return;
461
462	}
463
464
465
466	if (locationLookup.elapsedTime() >= GPS_TIMEOUT_MS) {
467	dismissDialog(DLG_PROGRESS);
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	}