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 java.util.ArrayList;
import java.util.List;

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

public class StationList extends ListActivity  {
        public static final int GOTLOCATION = 1001;
        public static final int GOTSTATIONLIST = 1002;
        public static final int NOPROVIDER = 1003;
        public static final int LOCATIONFIXTIMEOUT = 1004;
        
        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
        
        @SuppressWarnings("unchecked")
        @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(LOCATIONFIXTIMEOUT, 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) {

                        switch (msg.what) {
                        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 LOCATIONFIXTIMEOUT:                                
                                if (isRunning) {
                                        locationLookup.stopSearch();
                                        if (locationLookup.hasLocation()) {
                                                stationsFetched.sendEmptyMessage( GOTLOCATION ); 
                                        } 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
34	import java.util.ArrayList;
35	import java.util.List;
36
37	import android.app.Activity;
38	import android.app.AlertDialog;
39	import android.app.Dialog;
40	import android.app.ListActivity;
41	import android.app.ProgressDialog;
42	import android.content.DialogInterface;
43	import android.content.Intent;
44	import android.content.SharedPreferences;
45	import android.content.SharedPreferences.Editor;
46	import android.location.Location;
47	import android.os.AsyncTask;
48	import android.os.Bundle;
49	import android.os.Handler;
50	import android.os.Message;
51	import android.view.ContextMenu;
52	import android.view.LayoutInflater;
53	import android.view.Menu;
54	import android.view.MenuItem;
55	import android.view.View;
56	import android.view.ContextMenu.ContextMenuInfo;
57	import android.view.View.OnCreateContextMenuListener;
58	import android.widget.AdapterView;
59	import android.widget.EditText;
60	import android.widget.ListView;
61	import android.widget.Toast;
62	import dk.thoerup.android.traininfo.common.StationBean;
63	import dk.thoerup.android.traininfo.common.StationBean.StationEntry;
64	import dk.thoerup.traininfo.provider.ProviderFactory;
65	import dk.thoerup.traininfo.provider.StationProvider;
66	import dk.thoerup.traininfo.stationmap.GeoPair;
67	import dk.thoerup.traininfo.stationmap.StationMapView;
68	import dk.thoerup.traininfo.util.IntSet;
69	import dk.thoerup.traininfo.util.MessageBox;
70
71	public class StationList extends ListActivity {
72	public static final int GOTLOCATION = 1001;
73	public static final int GOTSTATIONLIST = 1002;
74	public static final int NOPROVIDER = 1003;
75	public static final int LOCATIONFIXTIMEOUT = 1004;
76
77	public static final int OPTIONS_MAP = 2003;
78	public static final int OPTIONS_GPSINFO = 2004;
79
80	public static final int DLG_PROGRESS = 3001;
81	public static final int DLG_STATIONNAME = 3002;
82
83
84	public static final int GPS_TIMEOUT_MS = 15000; //how long are we willing to wait for gps fix -in milliseconds
85
86
87	static enum LookupMethod {
88	ByLocation,
89	ByName,
90	ByList,
91	MethodNone
92	}
93
94
95	String dialogMessage = "";
96	ProgressDialog dialog;
97	LocationLookup locationLookup = null;
98	FindStationsTask findStationsTask;
99	StationsFetchedHandler stationsFetched = new StationsFetchedHandler();
100
101	GeoPair location = new GeoPair();
102
103	boolean isLaunchedforShortcut;
104	boolean isRunning = false;
105	StationBean stations = new StationBean();
106
107	StationProvider stationProvider = ProviderFactory.getStationProvider();
108
109	StationListAdapter adapter = null;
110
111	FavoritesMenu contextMenu = new FavoritesMenu();
112	IntSet favorites = new IntSet();
113
114	WelcomeScreen.ListType listType;
115	SharedPreferences prefs;
116
117	///////////////////////////////////////////////////////////////////////////////////////////
118	//Activity call backs
119
120	@SuppressWarnings("unchecked")
121	@Override
122	public void onCreate(Bundle savedInstanceState) {
123	super.onCreate(savedInstanceState);
124	setContentView(R.layout.stationlist);
125
126
127	adapter = new StationListAdapter(this);
128	setListAdapter(adapter);
129
130	ListView lv = getListView();
131	lv.setOnCreateContextMenuListener(contextMenu);
132
133	locationLookup = new LocationLookup(this, stationsFetched);
134
135
136	prefs = getSharedPreferences("TrainStation", 0);
137	String favoriteString = prefs.getString("favorites", "");
138	if (! favoriteString.equals("") ) {
139	favorites.fromString(favoriteString);
140	}
141
142	listType = (WelcomeScreen.ListType) getIntent().getSerializableExtra("type");
143	setTitle();
144
145	isLaunchedforShortcut = getIntent().getBooleanExtra("shortcut", false);
146
147	ProviderFactory.purgeOldEntries(); //cleanup before fetching more data
148
149	if (savedInstanceState == null) {
150
151
152	switch (listType) {
153	case ListNearest:
154	startLookup();
155	break;
156	case ListSearch:
157	showDialog(DLG_STATIONNAME);
158	break;
159	case ListFavorites:
160	startFavoriteLookup();
161	break;
162	default:
163	// Not possible !?!
164	}
165
166	} else {
167	stations = (StationBean) savedInstanceState.getSerializable("stations");
168	adapter.setStations(stations);
169	location = (GeoPair) savedInstanceState.getSerializable("location");
170	}
171
172	}
173
174
175
176
177
178
179	@Override
180	protected void onDestroy() {
181	super.onDestroy();
182
183	isRunning = false;
184
185	if (locationLookup != null) {
186	locationLookup.stopSearch();
187	}
188	if (findStationsTask != null) {
189	findStationsTask.cancel(true);
190	}
191	}
192
193
194	protected void setTitle() {
195	String dialogTitle = getResources().getString(app_name);
196	switch (listType) {
197	case ListNearest:
198	dialogTitle += " - " + getString(stationlist_nearbystations);
199	break;
200	case ListSearch:
201	dialogTitle += " - " + getString(stationlist_search);
202	break;
203	case ListFavorites:
204	dialogTitle += " - " + getString(stationlist_favorites);
205	break;
206	default:
207	dialogTitle = "";//not possible
208	}
209
210	setTitle(dialogTitle);
211
212	}
213
214
215
216	@Override
217	public void onSaveInstanceState(Bundle outState)
218	{
219	if (dialog != null && dialog.isShowing())
220	dialog.dismiss();
221	outState.putSerializable("stations", (StationBean) stations);
222	outState.putSerializable("location", location);
223
224	}
225
226
227
228	@Override
229	public boolean onCreateOptionsMenu(Menu menu) {
230	MenuItem item;
231
232	item = menu.add(0, OPTIONS_MAP, 0, getString(stationlist_stationmap));
233	item.setIcon(android.R.drawable.ic_menu_mapmode);
234
235	item = menu.add(0, OPTIONS_GPSINFO, 0, getString(stationlist_gpsinfo));
236	item.setIcon(android.R.drawable.ic_menu_mapmode);
237
238	return true;
239	}
240
241	@Override
242	public boolean onOptionsItemSelected(MenuItem item) {
243	boolean retval = true;
244
245	//TODO: Cleanup
246	switch (item.getItemId()) {
247	case OPTIONS_MAP:
248
249	Intent intent = new Intent(this,StationMapView.class);
250
251	ArrayList<GeoPair> stationPoints = new ArrayList<GeoPair>();
252	for (StationEntry st : stations.entries ) {
253	stationPoints.add( new GeoPair(st.getLatitude(), st.getLongitude(), st.getName()) );
254	}
255
256	intent.putExtra("stations", stationPoints);
257
258	startActivity(intent);
259	break;
260	case OPTIONS_GPSINFO:
261	Location loc = locationLookup.getLocation();
262	StringBuffer message = new StringBuffer();
263	message.append( getString(stationlist_locationinfo) ).append(":\n");
264	if (loc != null) {
265	message.append( getString(stationlist_obtainedby) ).append( loc.getProvider() ).append("\n");
266	message.append( getString(stationlist_accuracy) ).append( (int)loc.getAccuracy()).append("m\n");
267	message.append( getString(stationlist_latitude) ).append( (float)loc.getLatitude()).append("\n");
268	message.append( getString(stationlist_longitude) ).append( (float)loc.getLongitude() ).append("\n");
269	} else {
270	message.append( getString(stationlist_nolocation) );
271	}
272
273	MessageBox.showMessage(this, message.toString(), false);
274	break;
275	default:
276	retval = super.onOptionsItemSelected(item);
277	}
278
279	return retval;
280	}
281
282
283
284	@Override
285	public boolean onContextItemSelected(MenuItem item) {
286	contextMenu.onContextItemSelected(item);
287	return true;
288
289
290	}
291
292	public void showMessageAndClose(String message) {
293	AlertDialog.Builder builder = new AlertDialog.Builder(this);
294	builder.setMessage(message)
295	.setCancelable(false)
296	.setPositiveButton("OK", new DialogInterface.OnClickListener() {
297	public void onClick(DialogInterface dialog, int id) {
298	dialog.dismiss();
299	StationList.this.finish();
300	}
301	})
302	.show();
303	}
304
305
306
307
308	@Override
309	protected Dialog onCreateDialog(int id) {
310	switch (id) {
311	case DLG_PROGRESS:
312	ProgressDialog dlg = new ProgressDialog(this);
313	dlg.setMessage( getString(stationlist_waitforlocation) );
314	dlg.setCancelable(false);
315	return dlg;
316	case DLG_STATIONNAME:
317	LayoutInflater factory = LayoutInflater.from(this);
318	final View rootView = factory.inflate(R.layout.textinput, null);
319
320
321	AlertDialog.Builder builder = new AlertDialog.Builder(this);
322
323	builder.setTitle( getString(stationlist_stationsearch) );
324	builder.setView(rootView);
325	builder.setCancelable(true);
326	builder.setPositiveButton( getString(generic_search), new DialogInterface.OnClickListener() {
327	public void onClick(DialogInterface dialog, int which) {
328	EditText et = (EditText) rootView.findViewById(R.id.EditText);
329	dialog.dismiss();
330	String search = et.getText().toString().trim();
331	if (search.length() >= 2) {
332	startNameSearch(search);
333	} else {
334	showMessageAndClose( getString(stationlist_twocharmin) );
335	}
336	}
337	});
338	builder.setNegativeButton(getString(generic_cancel), new DialogInterface.OnClickListener() {
339	public void onClick(DialogInterface dialog, int which) {
340	dialog.dismiss();
341	StationList.this.finish(); // Close this Activity
342	}
343	});
344	return builder.create();
345
346	default:
347	return super.onCreateDialog(id);
348	}
349
350	}
351
352
353	@Override
354	protected void onPrepareDialog(int id, Dialog dialog) {
355	super.onPrepareDialog(id, dialog);
356	switch (id) {
357	case DLG_PROGRESS:
358	this.dialog = (ProgressDialog) dialog;
359	if (!dialogMessage.equals("")) {
360	this.dialog.setMessage(dialogMessage);
361	dialogMessage = "";
362	}
363	break;
364	}
365	}
366
367	@Override
368	protected void onListItemClick(ListView l, View v, int position, long id) {
369	super.onListItemClick(l, v, position, id);
370
371	StationEntry station = stations.entries.get(position);
372
373	if (isLaunchedforShortcut == true) {
374	Intent i = new Intent();
375	i.putExtra("station", station);
376	setResult(Activity.RESULT_OK, i);
377	finish();
378	} else {
379	Intent intent = new Intent(this, DepartureList.class);
380	intent.putExtra("stationbean", station);
381	startActivity(intent);
382	}
383	}
384
385	/////////////////////////////////////////////////////////////
386	//
387
388	public void startLookup() {
389	isRunning = true;
390	dialogMessage = getString( stationlist_waitforlocation );
391	showDialog(DLG_PROGRESS);
392
393	locationLookup.locateStations();
394	stationsFetched.sendEmptyMessageDelayed(LOCATIONFIXTIMEOUT, GPS_TIMEOUT_MS);
395	}
396
397	void startNameSearch(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	switch (msg.what) {
442	case GOTLOCATION:
443	dismissDialog(DLG_PROGRESS);
444
445	startLocatorTask();
446	location = GeoPair.fromLocation( locationLookup.getLocation() );
447
448	break;
449
450	case NOPROVIDER:
451	dismissDialog(DLG_PROGRESS);
452	MessageBox.showMessage(StationList.this, getString(stationlist_nolocationprovider), true );
453	//StationList.this.finish();
454	break;
455	case LOCATIONFIXTIMEOUT:
456	if (isRunning) {
457	locationLookup.stopSearch();
458	if (locationLookup.hasLocation()) {
459	stationsFetched.sendEmptyMessage( GOTLOCATION );
460	} else {
461	dismissDialog(DLG_PROGRESS);
462
463	AlertDialog.Builder builder = new AlertDialog.Builder(StationList.this);
464	builder.setMessage( getString( stationlist_gpstimeout) );
465	builder.setCancelable(true);
466	builder.setPositiveButton(getString(generic_retry), new DialogInterface.OnClickListener() {
467	public void onClick(DialogInterface dialog, int id) {
468	dialog.dismiss();
469	startLookup();
470
471	}
472	});
473	builder.setNegativeButton( getString(generic_cancel), new DialogInterface.OnClickListener() {
474	public void onClick(DialogInterface dialog, int id) {
475	dialog.dismiss();
476	}
477	});
478	builder.show();
479
480	}
481	}
482	break;
483	}
484	isRunning = false;
485	}
486	};
487
488
489	class FindStationsTask extends AsyncTask<Void,Void,Void> {
490
491	LookupMethod method = LookupMethod.MethodNone;
492	String name;
493	Location loc;
494	String ids;
495
496	public void searchByName(String n) {
497
498	method = LookupMethod.ByName;
499	name = n;
500	}
501
502	public void searchByLocation(Location l) {
503	method = LookupMethod.ByLocation;
504	loc = l;
505	}
506
507	public void searchByIds(String id) {
508
509	method = LookupMethod.ByList;
510	ids = id;
511	}
512
513	@Override
514	protected void onPreExecute() {
515
516	if (method.equals(LookupMethod.MethodNone))
517	throw new RuntimeException("Method not set");
518	super.onPreExecute();
519	}
520
521	@Override
522	protected Void doInBackground(Void... params) {
523
524	switch (method) {
525	case ByLocation:
526	stations = stationProvider.lookupStations(loc);
527	break;
528	case ByName:
529	stations = stationProvider.lookupStationsByName(name);
530	break;
531	case ByList:
532	stations = stationProvider.lookupStationsByIds(ids);
533	break;
534	default:
535	stations = null; // not possible
536	}
537
538
539	return null;
540	}
541
542	@Override
543	protected void onPostExecute(Void result) {
544	super.onPostExecute(result);
545	dialog.dismiss();
546
547
548	if (stations != null) {
549	if (stations.entries.size() == 0) {
550	showMessageAndClose(getString(stationlist_nostations));
551	}
552
553	StationList.this.getListView().invalidateViews();
554	adapter.setStations( stations );
555
556
557	} else { //communication or parse errors
558	AlertDialog.Builder builder = new AlertDialog.Builder(StationList.this);
559	builder.setMessage(getString(stationlist_fetcherror));
560	builder.setCancelable(true);
561	builder.setPositiveButton(getString(generic_retry), new DialogInterface.OnClickListener() {
562	public void onClick(DialogInterface dialog, int id) {
563	dialog.dismiss();
564
565	Runnable runner = null;
566	switch (method) {
567	case ByLocation:
568	runner = new Runnable() {
569	@Override
570	public void run() {
571	startLocatorTask();
572	}
573	};
574	break;
575	case ByName:
576	runner = new Runnable() {
577	@Override
578	public void run() {
579	startNameSearch( FindStationsTask.this.name );
580	}
581	};
582	break;
583	case ByList:
584	runner = new Runnable() {
585	@Override
586	public void run() {
587	startFavoriteLookup();
588	}
589	};
590	break;
591	}
592
593	stationsFetched.post( runner );
594	}
595	});
596	builder.setNegativeButton(getString(generic_cancel), new DialogInterface.OnClickListener() {
597	public void onClick(DialogInterface dialog, int id) {
598	dialog.dismiss();
599	StationList.this.finish();
600	}
601	});
602
603	builder.show();
604	}
605	}
606	}
607
608
609	class FavoritesMenu implements OnCreateContextMenuListener {
610	private final static int FAVORITES_ADD = 9001;
611	private final static int FAVORITES_REMOVE = 9002;
612
613	private int selectedPosition;
614
615
616	@Override
617	public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
618
619	AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) menuInfo;
620	selectedPosition = info.position;
621	int stationID = stations.entries.get(selectedPosition).getId();
622
623	if (!favorites.contains(stationID)) {
624	menu.add(0, FAVORITES_ADD, 0, getString(stationlist_addfavorite) );
625	} else {
626	menu.add(0, FAVORITES_REMOVE, 0, getString(stationlist_removefavorite) );
627	}
628
629	}
630
631	public void onContextItemSelected(MenuItem item) {
632	StationEntry sb = stations.entries.get(selectedPosition);
633
634	int stationID = sb.getId();
635	if (item.getItemId() == FAVORITES_ADD) {
636	favorites.add(stationID);
637	Toast.makeText(StationList.this, getString(stationlist_stationadded), Toast.LENGTH_SHORT).show();
638	} else {
639
640	favorites.remove(stationID);
641	Toast.makeText(StationList.this, getString(stationlist_stationremoved), Toast.LENGTH_SHORT).show();
642
643
644	if (listType.equals( WelcomeScreen.ListType.ListFavorites) ) {
645	stations.entries.remove(selectedPosition);
646	adapter.notifyDataSetChanged();
647	}
648	}
649	Editor ed = prefs.edit();
650	ed.putString("favorites", favorites.toString());
651	ed.commit();
652	}
653	}
654	}