thoerup/traininfo/StationList.java

package dk.thoerup.traininfo;

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

import java.util.ArrayList;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.location.Location;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.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 enum LookupStates {
                GOTLOCATION,
                GOTSTATIONLIST,
                NOPROVIDER,
                LOCATIONFIXTIMEOUT,
                GPS_SAT_COUNT
        }
        
        
        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;
        boolean isRunning = false;
        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, stationsFetched);
                

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

                        
                        switch (listType) {
                        case ListNearest:
                                startLookup();
                                break;
                        case ListSearch:                                
                                showDialog(DLG_STATIONNAME); 
                                break;
                        case ListFavorites:
                                startFavoriteLookup();
                                break;
                        default:
                                // Not possible !?!
                        }
                        
                } else {
                        stations = (StationBean) savedInstanceState.getSerializable("stations");
                        adapter.setStations(stations);
                        location = (GeoPair) savedInstanceState.getSerializable("location");
                }
                
        }
        
        
        @Override
        protected void onDestroy() {
                super.onDestroy();
                
                isRunning = false;
                
                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);
        outState.putSerializable("location", location);
        
    }
        
        
        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
                MenuItem item;
                
                item = menu.add(0, OPTIONS_MAP, 0, getString(stationlist_stationmap));
                item.setIcon(android.R.drawable.ic_menu_mapmode);
                
                item = menu.add(0, OPTIONS_GPSINFO, 0, getString(stationlist_gpsinfo));
                item.setIcon(android.R.drawable.ic_menu_mapmode);               
                
                return true;
        }

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

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


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


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

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

        public void startLookup() {
                isRunning = true;               
                dialogMessage = getString( stationlist_waitforlocation );
                showDialog(DLG_PROGRESS);
                
                locationLookup.locateStations();
                stationsFetched.sendEmptyMessageDelayed(LookupStates.LOCATIONFIXTIMEOUT.ordinal(), GPS_TIMEOUT_MS);
        }
        
        void startNameSearch(String name) {
                dialogMessage = getString( stationlist_findbyname );
                showDialog(DLG_PROGRESS);

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

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


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

        class StationsFetchedHandler extends Handler {
                @Override
                public void handleMessage(Message msg) {
                        Log.e("Handler", "WHAT:" + msg.what);
                        
                        LookupStates state = LookupStates.values()[msg.what];

                        switch (state) {
                        case GOTLOCATION:
                                dismissDialog(DLG_PROGRESS);
                                
                                startLocatorTask();
                                location = GeoPair.fromLocation( locationLookup.getLocation() );
                                
                                break;

                        case NOPROVIDER:
                                dismissDialog(DLG_PROGRESS);
                                MessageBox.showMessage(StationList.this, getString(stationlist_nolocationprovider), true );
                                //StationList.this.finish();
                                break;
                        case GPS_SAT_COUNT:
                                int count = msg.arg1;
                                String dialogMessage = getString( stationlist_waitforlocation ) + "\n" + getString( stationlist_satellitecount ) + ": " + count;
                                dialog.setMessage( dialogMessage );
                                return; //abort immediately
                        case LOCATIONFIXTIMEOUT:                                
                                if (isRunning) {
                                        locationLookup.stopSearch();
                                        if (locationLookup.hasLocation()) {
                                                stationsFetched.sendEmptyMessage(  LookupStates.GOTLOCATION.ordinal() ); 
                                        } else {                                                
                                                dismissDialog(DLG_PROGRESS);
                                                
                                                AlertDialog.Builder builder = new AlertDialog.Builder(StationList.this);                                                
                                                builder.setMessage(  getString( stationlist_gpstimeout) );
                                                builder.setCancelable(true);
                                                builder.setPositiveButton(getString(generic_retry), new DialogInterface.OnClickListener() {
                                                        public void onClick(DialogInterface dialog, int id) {
                                                                dialog.dismiss();
                                                                startLookup();
                                                                
                                                        }
                                                });
                                                builder.setNegativeButton( getString(generic_cancel), new DialogInterface.OnClickListener() {
                                                        public void onClick(DialogInterface dialog, int id) {
                                                                dialog.dismiss();
                                                        }                                                       
                                                });
                                                builder.show(); 

                                        }
                                }
                                break;
                        }
                        isRunning = false;
                }
        };

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

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

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

                        if (!favorites.contains(stationID)) {
                                menu.add(0, FAVORITES_ADD, 0, getString(stationlist_addfavorite) );
                        } else {
                                menu.add(0, FAVORITES_REMOVE, 0, getString(stationlist_removefavorite) );
                        }
                        
                }
                
                public void onContextItemSelected(MenuItem item) {
                        StationEntry sb = stations.entries.get(selectedPosition);
                        
                        int stationID = sb.getId();
                        if (item.getItemId() == FAVORITES_ADD) {
                                favorites.add(stationID);
                                Toast.makeText(StationList.this, getString(stationlist_stationadded), Toast.LENGTH_SHORT).show();
                        } else {
                                
                                favorites.remove(stationID);
                                Toast.makeText(StationList.this, getString(stationlist_stationremoved), Toast.LENGTH_SHORT).show();
                                
                                
                                if (listType.equals( WelcomeScreen.ListType.ListFavorites) ) {
                                        stations.entries.remove(selectedPosition);
                                        adapter.notifyDataSetChanged();
                                }
                        }
                        Editor ed = prefs.edit();
                        ed.putString("favorites", favorites.toString());
                        ed.commit();
                }
        }
}
1	package dk.thoerup.traininfo;
2
3	import static dk.thoerup.traininfo.R.string.app_name;
4	import static dk.thoerup.traininfo.R.string.generic_cancel;
5	import static dk.thoerup.traininfo.R.string.generic_retry;
6	import static dk.thoerup.traininfo.R.string.generic_search;
7	import static dk.thoerup.traininfo.R.string.stationlist_accuracy;
8	import static dk.thoerup.traininfo.R.string.stationlist_addfavorite;
9	import static dk.thoerup.traininfo.R.string.stationlist_favorites;
10	import static dk.thoerup.traininfo.R.string.stationlist_fetcherror;
11	import static dk.thoerup.traininfo.R.string.stationlist_findbyname;
12	import static dk.thoerup.traininfo.R.string.stationlist_findingnearby;
13	import static dk.thoerup.traininfo.R.string.stationlist_gpsinfo;
14	import static dk.thoerup.traininfo.R.string.stationlist_gpstimeout;
15	import static dk.thoerup.traininfo.R.string.stationlist_latitude;
16	import static dk.thoerup.traininfo.R.string.stationlist_loadfavorites;
17	import static dk.thoerup.traininfo.R.string.stationlist_locationinfo;
18	import static dk.thoerup.traininfo.R.string.stationlist_longitude;
19	import static dk.thoerup.traininfo.R.string.stationlist_nearbystations;
20	import static dk.thoerup.traininfo.R.string.stationlist_nofavorites;
21	import static dk.thoerup.traininfo.R.string.stationlist_nolocation;
22	import static dk.thoerup.traininfo.R.string.stationlist_nolocationprovider;
23	import static dk.thoerup.traininfo.R.string.stationlist_nostations;
24	import static dk.thoerup.traininfo.R.string.stationlist_obtainedby;
25	import static dk.thoerup.traininfo.R.string.stationlist_removefavorite;
26	import static dk.thoerup.traininfo.R.string.stationlist_search;
27	import static dk.thoerup.traininfo.R.string.stationlist_stationadded;
28	import static dk.thoerup.traininfo.R.string.stationlist_stationmap;
29	import static dk.thoerup.traininfo.R.string.stationlist_stationremoved;
30	import static dk.thoerup.traininfo.R.string.stationlist_stationsearch;
31	import static dk.thoerup.traininfo.R.string.stationlist_twocharmin;
32	import static dk.thoerup.traininfo.R.string.stationlist_waitforlocation;
33	import static dk.thoerup.traininfo.R.string.stationlist_satellitecount;
34
35	import java.util.ArrayList;
36
37	import android.app.Activity;
38	import android.app.AlertDialog;
39	import android.app.Dialog;
40	import android.app.ListActivity;
41	import android.app.ProgressDialog;
42	import android.content.DialogInterface;
43	import android.content.Intent;
44	import android.content.SharedPreferences;
45	import android.content.SharedPreferences.Editor;
46	import android.location.Location;
47	import android.os.AsyncTask;
48	import android.os.Bundle;
49	import android.os.Handler;
50	import android.os.Message;
51	import android.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	public enum LookupStates {
74	GOTLOCATION,
75	GOTSTATIONLIST,
76	NOPROVIDER,
77	LOCATIONFIXTIMEOUT,
78	GPS_SAT_COUNT
79	}
80
81
82	public static final int OPTIONS_MAP = 2003;
83	public static final int OPTIONS_GPSINFO = 2004;
84
85	public static final int DLG_PROGRESS = 3001;
86	public static final int DLG_STATIONNAME = 3002;
87
88
89	public static final int GPS_TIMEOUT_MS = 15000; //how long are we willing to wait for gps fix -in milliseconds
90
91
92	static enum LookupMethod {
93	ByLocation,
94	ByName,
95	ByList,
96	MethodNone
97	}
98
99
100	String dialogMessage = "";
101	ProgressDialog dialog;
102	LocationLookup locationLookup = null;
103	FindStationsTask findStationsTask;
104	StationsFetchedHandler stationsFetched = new StationsFetchedHandler();
105
106	GeoPair location = new GeoPair();
107
108	boolean isLaunchedforShortcut;
109	boolean isRunning = false;
110	StationBean stations = new StationBean();
111
112	StationProvider stationProvider = ProviderFactory.getStationProvider();
113
114	StationListAdapter adapter = null;
115
116	FavoritesMenu contextMenu = new FavoritesMenu();
117	IntSet favorites = new IntSet();
118
119	WelcomeScreen.ListType listType;
120	SharedPreferences prefs;
121
122	///////////////////////////////////////////////////////////////////////////////////////////
123	//Activity call backs
124
125
126	@Override
127	public void onCreate(Bundle savedInstanceState) {
128	super.onCreate(savedInstanceState);
129	setContentView(R.layout.stationlist);
130
131
132	adapter = new StationListAdapter(this);
133	setListAdapter(adapter);
134
135	ListView lv = getListView();
136	lv.setOnCreateContextMenuListener(contextMenu);
137
138	locationLookup = new LocationLookup(this, stationsFetched);
139
140
141	prefs = getSharedPreferences("TrainStation", 0);
142	String favoriteString = prefs.getString("favorites", "");
143	if (! favoriteString.equals("") ) {
144	favorites.fromString(favoriteString);
145	}
146
147	listType = (WelcomeScreen.ListType) getIntent().getSerializableExtra("type");
148	setTitle();
149
150	isLaunchedforShortcut = getIntent().getBooleanExtra("shortcut", false);
151
152	ProviderFactory.purgeOldEntries(); //cleanup before fetching more data
153
154	if (savedInstanceState == null) {
155
156
157	switch (listType) {
158	case ListNearest:
159	startLookup();
160	break;
161	case ListSearch:
162	showDialog(DLG_STATIONNAME);
163	break;
164	case ListFavorites:
165	startFavoriteLookup();
166	break;
167	default:
168	// Not possible !?!
169	}
170
171	} else {
172	stations = (StationBean) savedInstanceState.getSerializable("stations");
173	adapter.setStations(stations);
174	location = (GeoPair) savedInstanceState.getSerializable("location");
175	}
176
177	}
178
179
180
181
182
183
184	@Override
185	protected void onDestroy() {
186	super.onDestroy();
187
188	isRunning = false;
189
190	if (locationLookup != null) {
191	locationLookup.stopSearch();
192	}
193	if (findStationsTask != null) {
194	findStationsTask.cancel(true);
195	}
196	}
197
198
199	protected void setTitle() {
200	String dialogTitle = getResources().getString(app_name);
201	switch (listType) {
202	case ListNearest:
203	dialogTitle += " - " + getString(stationlist_nearbystations);
204	break;
205	case ListSearch:
206	dialogTitle += " - " + getString(stationlist_search);
207	break;
208	case ListFavorites:
209	dialogTitle += " - " + getString(stationlist_favorites);
210	break;
211	default:
212	dialogTitle = "";//not possible
213	}
214
215	setTitle(dialogTitle);
216
217	}
218
219
220
221	@Override
222	public void onSaveInstanceState(Bundle outState)
223	{
224	if (dialog != null && dialog.isShowing())
225	dialog.dismiss();
226	outState.putSerializable("stations", (StationBean) stations);
227	outState.putSerializable("location", location);
228
229	}
230
231
232
233	@Override
234	public boolean onCreateOptionsMenu(Menu menu) {
235	MenuItem item;
236
237	item = menu.add(0, OPTIONS_MAP, 0, getString(stationlist_stationmap));
238	item.setIcon(android.R.drawable.ic_menu_mapmode);
239
240	item = menu.add(0, OPTIONS_GPSINFO, 0, getString(stationlist_gpsinfo));
241	item.setIcon(android.R.drawable.ic_menu_mapmode);
242
243	return true;
244	}
245
246	@Override
247	public boolean onOptionsItemSelected(MenuItem item) {
248	boolean retval = true;
249
250	//TODO: Cleanup
251	switch (item.getItemId()) {
252	case OPTIONS_MAP:
253
254	Intent intent = new Intent(this,StationMapView.class);
255
256	ArrayList<GeoPair> stationPoints = new ArrayList<GeoPair>();
257	for (StationEntry st : stations.entries ) {
258	stationPoints.add( new GeoPair(st.getLatitude(), st.getLongitude(), st.getName()) );
259	}
260
261	intent.putExtra("stations", stationPoints);
262
263	startActivity(intent);
264	break;
265	case OPTIONS_GPSINFO:
266	Location loc = locationLookup.getLocation();
267	StringBuffer message = new StringBuffer();
268	message.append( getString(stationlist_locationinfo) ).append(":\n");
269	if (loc != null) {
270	message.append( getString(stationlist_obtainedby) ).append( loc.getProvider() ).append("\n");
271	message.append( getString(stationlist_accuracy) ).append( (int)loc.getAccuracy()).append("m\n");
272	message.append( getString(stationlist_latitude) ).append( (float)loc.getLatitude()).append("\n");
273	message.append( getString(stationlist_longitude) ).append( (float)loc.getLongitude() ).append("\n");
274	} else {
275	message.append( getString(stationlist_nolocation) );
276	}
277
278	MessageBox.showMessage(this, message.toString(), false);
279	break;
280	default:
281	retval = super.onOptionsItemSelected(item);
282	}
283
284	return retval;
285	}
286
287
288
289	@Override
290	public boolean onContextItemSelected(MenuItem item) {
291	contextMenu.onContextItemSelected(item);
292	return true;
293
294
295	}
296
297	public void showMessageAndClose(String message) {
298	AlertDialog.Builder builder = new AlertDialog.Builder(this);
299	builder.setMessage(message)
300	.setCancelable(false)
301	.setPositiveButton("OK", new DialogInterface.OnClickListener() {
302	public void onClick(DialogInterface dialog, int id) {
303	dialog.dismiss();
304	StationList.this.finish();
305	}
306	})
307	.show();
308	}
309
310
311
312
313	@Override
314	protected Dialog onCreateDialog(int id) {
315	switch (id) {
316	case DLG_PROGRESS:
317	ProgressDialog dlg = new ProgressDialog(this);
318	dlg.setMessage( getString(stationlist_waitforlocation) );
319	dlg.setCancelable(false);
320	return dlg;
321	case DLG_STATIONNAME:
322	LayoutInflater factory = LayoutInflater.from(this);
323	final View rootView = factory.inflate(R.layout.textinput, null);
324
325
326	AlertDialog.Builder builder = new AlertDialog.Builder(this);
327
328	builder.setTitle( getString(stationlist_stationsearch) );
329	builder.setView(rootView);
330	builder.setCancelable(true);
331	builder.setPositiveButton( getString(generic_search), new DialogInterface.OnClickListener() {
332	public void onClick(DialogInterface dialog, int which) {
333	EditText et = (EditText) rootView.findViewById(R.id.EditText);
334	dialog.dismiss();
335	String search = et.getText().toString().trim();
336	if (search.length() >= 2) {
337	startNameSearch(search);
338	} else {
339	showMessageAndClose( getString(stationlist_twocharmin) );
340	}
341	}
342	});
343	builder.setNegativeButton(getString(generic_cancel), new DialogInterface.OnClickListener() {
344	public void onClick(DialogInterface dialog, int which) {
345	dialog.dismiss();
346	StationList.this.finish(); // Close this Activity
347	}
348	});
349	return builder.create();
350
351	default:
352	return super.onCreateDialog(id);
353	}
354
355	}
356
357
358	@Override
359	protected void onPrepareDialog(int id, Dialog dialog) {
360	super.onPrepareDialog(id, dialog);
361	switch (id) {
362	case DLG_PROGRESS:
363	this.dialog = (ProgressDialog) dialog;
364	if (!dialogMessage.equals("")) {
365	this.dialog.setMessage(dialogMessage);
366	dialogMessage = "";
367	}
368	break;
369	}
370	}
371
372	@Override
373	protected void onListItemClick(ListView l, View v, int position, long id) {
374	super.onListItemClick(l, v, position, id);
375
376	StationEntry station = stations.entries.get(position);
377
378	if (isLaunchedforShortcut == true) {
379	Intent i = new Intent();
380	i.putExtra("station", station);
381	setResult(Activity.RESULT_OK, i);
382	finish();
383	} else {
384	Intent intent = new Intent(this, DepartureList.class);
385	intent.putExtra("stationbean", station);
386	startActivity(intent);
387	}
388	}
389
390	/////////////////////////////////////////////////////////////
391	//
392
393	public void startLookup() {
394	isRunning = true;
395	dialogMessage = getString( stationlist_waitforlocation );
396	showDialog(DLG_PROGRESS);
397
398	locationLookup.locateStations();
399	stationsFetched.sendEmptyMessageDelayed(LookupStates.LOCATIONFIXTIMEOUT.ordinal(), GPS_TIMEOUT_MS);
400	}
401
402	void startNameSearch(String name) {
403	dialogMessage = getString( stationlist_findbyname );
404	showDialog(DLG_PROGRESS);
405
406	findStationsTask = new FindStationsTask();
407	findStationsTask.searchByName(name);
408	findStationsTask.execute();
409
410	}
411
412	public void startFavoriteLookup() {
413
414	if (favorites.size() > 0) {
415	dialogMessage = getString( stationlist_loadfavorites );
416	showDialog(DLG_PROGRESS);
417
418	findStationsTask = new FindStationsTask();
419	findStationsTask.searchByIds( favorites.toString() );
420	findStationsTask.execute();
421	} else {
422	showMessageAndClose( getString( stationlist_nofavorites ) );
423	}
424	}
425
426
427
428	void startLocatorTask()
429	{
430	dialogMessage = getString( stationlist_findingnearby );
431	showDialog(DLG_PROGRESS);
432
433	findStationsTask = new FindStationsTask();
434	findStationsTask.searchByLocation( locationLookup.getLocation() );
435	findStationsTask.execute();
436	}
437
438
439	////////////////////////////////////////////////////////////////////////////
440	// Inner classes
441
442	class StationsFetchedHandler extends Handler {
443	@Override
444	public void handleMessage(Message msg) {
445	Log.e("Handler", "WHAT:" + msg.what);
446
447	LookupStates state = LookupStates.values()[msg.what];
448
449	switch (state) {
450	case GOTLOCATION:
451	dismissDialog(DLG_PROGRESS);
452
453	startLocatorTask();
454	location = GeoPair.fromLocation( locationLookup.getLocation() );
455
456	break;
457
458	case NOPROVIDER:
459	dismissDialog(DLG_PROGRESS);
460	MessageBox.showMessage(StationList.this, getString(stationlist_nolocationprovider), true );
461	//StationList.this.finish();
462	break;
463	case GPS_SAT_COUNT:
464	int count = msg.arg1;
465	String dialogMessage = getString( stationlist_waitforlocation ) + "\n" + getString( stationlist_satellitecount ) + ": " + count;
466	dialog.setMessage( dialogMessage );
467	return; //abort immediately
468	case LOCATIONFIXTIMEOUT:
469	if (isRunning) {
470	locationLookup.stopSearch();
471	if (locationLookup.hasLocation()) {
472	stationsFetched.sendEmptyMessage( LookupStates.GOTLOCATION.ordinal() );
473	} else {
474	dismissDialog(DLG_PROGRESS);
475
476	AlertDialog.Builder builder = new AlertDialog.Builder(StationList.this);
477	builder.setMessage( getString( stationlist_gpstimeout) );
478	builder.setCancelable(true);
479	builder.setPositiveButton(getString(generic_retry), new DialogInterface.OnClickListener() {
480	public void onClick(DialogInterface dialog, int id) {
481	dialog.dismiss();
482	startLookup();
483
484	}
485	});
486	builder.setNegativeButton( getString(generic_cancel), new DialogInterface.OnClickListener() {
487	public void onClick(DialogInterface dialog, int id) {
488	dialog.dismiss();
489	}
490	});
491	builder.show();
492
493	}
494	}
495	break;
496	}
497	isRunning = false;
498	}
499	};
500
501
502	class FindStationsTask extends AsyncTask<Void,Void,Void> {
503
504	LookupMethod method = LookupMethod.MethodNone;
505	String name;
506	Location loc;
507	String ids;
508
509	public void searchByName(String n) {
510
511	method = LookupMethod.ByName;
512	name = n;
513	}
514
515	public void searchByLocation(Location l) {
516	method = LookupMethod.ByLocation;
517	loc = l;
518	}
519
520	public void searchByIds(String id) {
521
522	method = LookupMethod.ByList;
523	ids = id;
524	}
525
526	@Override
527	protected void onPreExecute() {
528
529	if (method.equals(LookupMethod.MethodNone))
530	throw new RuntimeException("Method not set");
531	super.onPreExecute();
532	}
533
534	@Override
535	protected Void doInBackground(Void... params) {
536
537	switch (method) {
538	case ByLocation:
539	stations = stationProvider.lookupStations(loc);
540	break;
541	case ByName:
542	stations = stationProvider.lookupStationsByName(name);
543	break;
544	case ByList:
545	stations = stationProvider.lookupStationsByIds(ids);
546	break;
547	default:
548	stations = null; // not possible
549	}
550
551
552	return null;
553	}
554
555	@Override
556	protected void onPostExecute(Void result) {
557	super.onPostExecute(result);
558	dialog.dismiss();
559
560
561	if (stations != null) {
562	if (stations.entries.size() == 0) {
563	showMessageAndClose(getString(stationlist_nostations));
564	}
565
566	StationList.this.getListView().invalidateViews();
567	adapter.setStations( stations );
568
569
570	} else { //communication or parse errors
571	AlertDialog.Builder builder = new AlertDialog.Builder(StationList.this);
572	builder.setMessage(getString(stationlist_fetcherror));
573	builder.setCancelable(true);
574	builder.setPositiveButton(getString(generic_retry), new DialogInterface.OnClickListener() {
575	public void onClick(DialogInterface dialog, int id) {
576	dialog.dismiss();
577
578	Runnable runner = null;
579	switch (method) {
580	case ByLocation:
581	runner = new Runnable() {
582	@Override
583	public void run() {
584	startLocatorTask();
585	}
586	};
587	break;
588	case ByName:
589	runner = new Runnable() {
590	@Override
591	public void run() {
592	startNameSearch( FindStationsTask.this.name );
593	}
594	};
595	break;
596	case ByList:
597	runner = new Runnable() {
598	@Override
599	public void run() {
600	startFavoriteLookup();
601	}
602	};
603	break;
604	}
605
606	stationsFetched.post( runner );
607	}
608	});
609	builder.setNegativeButton(getString(generic_cancel), new DialogInterface.OnClickListener() {
610	public void onClick(DialogInterface dialog, int id) {
611	dialog.dismiss();
612	StationList.this.finish();
613	}
614	});
615
616	builder.show();
617	}
618	}
619	}
620
621
622	class FavoritesMenu implements OnCreateContextMenuListener {
623	private final static int FAVORITES_ADD = 9001;
624	private final static int FAVORITES_REMOVE = 9002;
625
626	private int selectedPosition;
627
628
629	@Override
630	public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
631
632	AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) menuInfo;
633	selectedPosition = info.position;
634	int stationID = stations.entries.get(selectedPosition).getId();
635
636	if (!favorites.contains(stationID)) {
637	menu.add(0, FAVORITES_ADD, 0, getString(stationlist_addfavorite) );
638	} else {
639	menu.add(0, FAVORITES_REMOVE, 0, getString(stationlist_removefavorite) );
640	}
641
642	}
643
644	public void onContextItemSelected(MenuItem item) {
645	StationEntry sb = stations.entries.get(selectedPosition);
646
647	int stationID = sb.getId();
648	if (item.getItemId() == FAVORITES_ADD) {
649	favorites.add(stationID);
650	Toast.makeText(StationList.this, getString(stationlist_stationadded), Toast.LENGTH_SHORT).show();
651	} else {
652
653	favorites.remove(stationID);
654	Toast.makeText(StationList.this, getString(stationlist_stationremoved), Toast.LENGTH_SHORT).show();
655
656
657	if (listType.equals( WelcomeScreen.ListType.ListFavorites) ) {
658	stations.entries.remove(selectedPosition);
659	adapter.notifyDataSetChanged();
660	}
661	}
662	Editor ed = prefs.edit();
663	ed.putString("favorites", favorites.toString());
664	ed.commit();
665	}
666	}
667	}