thoerup/traininfo/TimetableList.java

package dk.thoerup.traininfo;


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.timetablelist_fetchdata;
import static dk.thoerup.traininfo.R.string.timetablelist_fetcherror;
import static dk.thoerup.traininfo.R.string.timetablelist_nodata;

import java.util.regex.Pattern;

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.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ListView;
import android.widget.TextView;
import dk.thoerup.android.traininfo.common.DepartureEntry;
import dk.thoerup.android.traininfo.common.StationBean.StationEntry;
import dk.thoerup.android.traininfo.common.TimetableBean;
import dk.thoerup.android.traininfo.common.TimetableEntry;
import dk.thoerup.traininfo.provider.ProviderFactory;
import dk.thoerup.traininfo.provider.TimetableProvider;
import dk.thoerup.traininfo.util.MessageBox;

public class TimetableList extends ListActivity {
        
        private static final int DLG_PROGRESS = 8000;
        DepartureEntry departure;
        TimetableListAdapter adapter;
        TimetableFetcher fetcher;
        TimetableBean timetables;
        int commFailCounter = 0;
        
        TimetableProvider provider; 


        @Override
        protected void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.timetablelist);
                
                provider = ProviderFactory.getTimetableProvider();
                
                adapter = new TimetableListAdapter(this);               
                setListAdapter(adapter);


                Intent launchedBy = getIntent();
                departure = (DepartureEntry) launchedBy.getSerializableExtra("departure");
                
                ((TextView)findViewById(R.id.Train)).setText(departure.getTrainNumber());
                                
                ((TextView)findViewById(R.id.Location)).setText(departure.getLocation());               
                ((TextView)findViewById(R.id.Updated)).setText( getLastUpdateString( departure.getUpdated() ));
                
                String status = departure.getStatus() != null ? departure.getStatus() : "";             
                if ( Pattern.matches("[0-9]+.+min", status) ) {
                        status += " " + this.getString(R.string.departurebean_delayed);
                }
                String note = departure.getNote() != null ? departure.getNote() : "";
                note = note.replace("Aflyst", this.getString(R.string.timetablelist_cancelled) );
                note = note.replace("Kører kun til", this.getString(R.string.timetablelist_goesonlyto) );
                note = note.replace("Afgår fra", this.getString(R.string.timetablelist_startsat) );
                note = note.replace("Erstattet af", this.getString(R.string.timetablelist_replacedby) );
                note = note.replace("Eksterne forhold", this.getString(R.string.timetablelist_externalconditions) );
                note = note.replace("Teknisk fejl på et signal", this.getString(R.string.timetablelist_technicalerroronsignal) );
                note = note.replace("Materielforhold", this.getString(R.string.timetablelist_equipmentrelated) );
                note = note.replace("Passagerforhold", this.getString(R.string.timetablelist_passengerrelated) );
                note = note.replace("Forventet rettidig afgang", this.getString(R.string.timetablelist_expectedtimelydeparture) );
                

                ((TextView)findViewById(R.id.Status)).setText(status);
                ((TextView)findViewById(R.id.Note)).setText(note);
                                                        
                
                ProviderFactory.purgeOldEntries(); //cleanup before fetching more data
                
                if (savedInstanceState == null) {
                        startTimetableFetcher();
                } else {
                        timetables = (TimetableBean) savedInstanceState.getSerializable("timetables");
                        adapter.setTimetable(timetables);
                }
        }

        @Override
        protected void onDestroy() {
                super.onDestroy();
                
                if (fetcher != null) {
                        fetcher.cancel(true);
                }
        }
        
    @Override
        protected void onListItemClick(ListView l, View v, int position, long id) {
                super.onListItemClick(l, v, position, id);

                TimetableEntry tt = timetables.entries.get(position);
                
                StationEntry station = new StationEntry();
                station.setName( tt.getStation() );
                station.setId( tt.getStationId() );
                station.setIsRegional(true);
                
                
                Intent intent = new Intent(this, DepartureList.class);
                intent.putExtra("stationbean", station);
                startActivity(intent);
                
        }
    

        @Override 
    public void onSaveInstanceState(Bundle outState) 
    {           
        dismissDialog(DLG_PROGRESS);
        outState.putSerializable("timetables", (TimetableBean) timetables);
    }

        
        @Override
        protected void onPrepareDialog(int id, Dialog dialog) {
                super.onPrepareDialog(id, dialog);
                
                switch (id) {
                case DLG_PROGRESS:
                        //pgDialog = (ProgressDialog) dialog;
                        break;
                }
        }
        
        @Override
        protected Dialog onCreateDialog(int id) {
                switch (id) {
                case DLG_PROGRESS:
                        ProgressDialog dlg = new ProgressDialog(this);                  
                        dlg.setMessage( getString(timetablelist_fetchdata) );
                        dlg.setCancelable(true);
                        return dlg;                     
                default:
                        return super.onCreateDialog(id);                
                }
        }

        void startTimetableFetcher() {
                showDialog(DLG_PROGRESS);
                fetcher = new TimetableFetcher(); 
                fetcher.execute(departure.getType(), departure.getTrainNumber());
        }
        
        
        public String getLastUpdateString(int lastUpdate) {
                String minutes = this.getString(R.string.departurebean_minutes);
                String unknown = this.getString(R.string.departurebean_unknown);
                switch (lastUpdate) {
                case 1:
                        return "<3 " + minutes;
                case 2:
                        return "3-10 " + minutes;
                case 3:
                        return ">3 " + minutes;
                case 4:
                        return unknown;
                default:
                        return "";
                }
        }

        
        class TimetableFetcher extends AsyncTask<String,Void,Void> {
                
                
                @Override
                protected void onPostExecute(Void result) {
                        super.onPostExecute(result);
                        dismissDialog(DLG_PROGRESS);
        
                        //TODO: differentiate between a communication error and a downed bane.dk site  
                        if (timetables != null) {
                                commFailCounter = 0;
                                TimetableList.this.getListView().invalidateViews();
                                adapter.setTimetable(timetables);
                                if (timetables.entries.size() == 0) {
                                        MessageBox.showMessage(TimetableList.this, getString(timetablelist_nodata), true);
                                }
                        } else { // communication or parse error
                                commFailCounter++;
                                AlertDialog.Builder builder = new AlertDialog.Builder(TimetableList.this);                                              
                                builder.setMessage(getString(timetablelist_fetcherror));
                                builder.setCancelable(true);
                                if (commFailCounter < 3) {
                                        builder.setPositiveButton(getString(generic_retry), new DialogInterface.OnClickListener() {
                                                public void onClick(DialogInterface dialog, int id) {
                                                        dialog.dismiss();
                                                        startTimetableFetcher();
                                                        
                                                }
                                        });
                                }
                                builder.setNegativeButton(getString(generic_cancel), new DialogInterface.OnClickListener() {
                                        public void onClick(DialogInterface dialog, int id) {
                                                dialog.dismiss();
                                                TimetableList.this.finish();
                                        }                                                       
                                });
                                
                                try {
                                        builder.show();
                                } catch (android.view.WindowManager.BadTokenException e) {                                      
                                        Log.i("TimetableList", "BadTokenException"); // this can happen if the user switched away from this activity, while doInBackground was running
                                }
                                                                
                        }
                        
                }
                
                @Override
                protected Void doInBackground(String... arg0) {
                        String type = arg0[0];
                        String trainID = arg0[1];
                        timetables = provider.lookupTimetable(type, trainID);
                        
                        return null;
                }
                
        }
}
1	package dk.thoerup.traininfo;
2
3
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.timetablelist_fetchdata;
7	import static dk.thoerup.traininfo.R.string.timetablelist_fetcherror;
8	import static dk.thoerup.traininfo.R.string.timetablelist_nodata;
9
10	import java.util.regex.Pattern;
11
12	import android.app.AlertDialog;
13	import android.app.Dialog;
14	import android.app.ListActivity;
15	import android.app.ProgressDialog;
16	import android.content.DialogInterface;
17	import android.content.Intent;
18	import android.os.AsyncTask;
19	import android.os.Bundle;
20	import android.util.Log;
21	import android.view.View;
22	import android.widget.ListView;
23	import android.widget.TextView;
24	import dk.thoerup.android.traininfo.common.DepartureEntry;
25	import dk.thoerup.android.traininfo.common.StationBean.StationEntry;
26	import dk.thoerup.android.traininfo.common.TimetableBean;
27	import dk.thoerup.android.traininfo.common.TimetableEntry;
28	import dk.thoerup.traininfo.provider.ProviderFactory;
29	import dk.thoerup.traininfo.provider.TimetableProvider;
30	import dk.thoerup.traininfo.util.MessageBox;
31
32	public class TimetableList extends ListActivity {
33
34	private static final int DLG_PROGRESS = 8000;
35	DepartureEntry departure;
36	TimetableListAdapter adapter;
37	TimetableFetcher fetcher;
38	TimetableBean timetables;
39	int commFailCounter = 0;
40
41	TimetableProvider provider;
42
43
44	@Override
45	protected void onCreate(Bundle savedInstanceState) {
46	super.onCreate(savedInstanceState);
47	setContentView(R.layout.timetablelist);
48
49	provider = ProviderFactory.getTimetableProvider();
50
51	adapter = new TimetableListAdapter(this);
52	setListAdapter(adapter);
53
54
55
56	Intent launchedBy = getIntent();
57	departure = (DepartureEntry) launchedBy.getSerializableExtra("departure");
58
59	((TextView)findViewById(R.id.Train)).setText(departure.getTrainNumber());
60
61	((TextView)findViewById(R.id.Location)).setText(departure.getLocation());
62	((TextView)findViewById(R.id.Updated)).setText( getLastUpdateString( departure.getUpdated() ));
63
64	String status = departure.getStatus() != null ? departure.getStatus() : "";
65	if ( Pattern.matches("[0-9]+.+min", status) ) {
66	status += " " + this.getString(R.string.departurebean_delayed);
67	}
68	String note = departure.getNote() != null ? departure.getNote() : "";
69	note = note.replace("Aflyst", this.getString(R.string.timetablelist_cancelled) );
70	note = note.replace("Kører kun til", this.getString(R.string.timetablelist_goesonlyto) );
71	note = note.replace("Afgår fra", this.getString(R.string.timetablelist_startsat) );
72	note = note.replace("Erstattet af", this.getString(R.string.timetablelist_replacedby) );
73	note = note.replace("Eksterne forhold", this.getString(R.string.timetablelist_externalconditions) );
74	note = note.replace("Teknisk fejl på et signal", this.getString(R.string.timetablelist_technicalerroronsignal) );
75	note = note.replace("Materielforhold", this.getString(R.string.timetablelist_equipmentrelated) );
76	note = note.replace("Passagerforhold", this.getString(R.string.timetablelist_passengerrelated) );
77	note = note.replace("Forventet rettidig afgang", this.getString(R.string.timetablelist_expectedtimelydeparture) );
78
79
80
81	((TextView)findViewById(R.id.Status)).setText(status);
82	((TextView)findViewById(R.id.Note)).setText(note);
83
84
85	ProviderFactory.purgeOldEntries(); //cleanup before fetching more data
86
87	if (savedInstanceState == null) {
88	startTimetableFetcher();
89	} else {
90	timetables = (TimetableBean) savedInstanceState.getSerializable("timetables");
91	adapter.setTimetable(timetables);
92	}
93	}
94
95	@Override
96	protected void onDestroy() {
97	super.onDestroy();
98
99	if (fetcher != null) {
100	fetcher.cancel(true);
101	}
102	}
103
104	@Override
105	protected void onListItemClick(ListView l, View v, int position, long id) {
106	super.onListItemClick(l, v, position, id);
107
108	TimetableEntry tt = timetables.entries.get(position);
109
110	StationEntry station = new StationEntry();
111	station.setName( tt.getStation() );
112	station.setId( tt.getStationId() );
113	station.setIsRegional(true);
114
115
116	Intent intent = new Intent(this, DepartureList.class);
117	intent.putExtra("stationbean", station);
118	startActivity(intent);
119
120	}
121
122
123
124	@Override
125	public void onSaveInstanceState(Bundle outState)
126	{
127	dismissDialog(DLG_PROGRESS);
128	outState.putSerializable("timetables", (TimetableBean) timetables);
129	}
130
131
132	@Override
133	protected void onPrepareDialog(int id, Dialog dialog) {
134	super.onPrepareDialog(id, dialog);
135
136	switch (id) {
137	case DLG_PROGRESS:
138	//pgDialog = (ProgressDialog) dialog;
139	break;
140	}
141	}
142
143	@Override
144	protected Dialog onCreateDialog(int id) {
145	switch (id) {
146	case DLG_PROGRESS:
147	ProgressDialog dlg = new ProgressDialog(this);
148	dlg.setMessage( getString(timetablelist_fetchdata) );
149	dlg.setCancelable(true);
150	return dlg;
151	default:
152	return super.onCreateDialog(id);
153	}
154	}
155
156	void startTimetableFetcher() {
157	showDialog(DLG_PROGRESS);
158	fetcher = new TimetableFetcher();
159	fetcher.execute(departure.getType(), departure.getTrainNumber());
160	}
161
162
163	public String getLastUpdateString(int lastUpdate) {
164	String minutes = this.getString(R.string.departurebean_minutes);
165	String unknown = this.getString(R.string.departurebean_unknown);
166	switch (lastUpdate) {
167	case 1:
168	return "<3 " + minutes;
169	case 2:
170	return "3-10 " + minutes;
171	case 3:
172	return ">3 " + minutes;
173	case 4:
174	return unknown;
175	default:
176	return "";
177	}
178	}
179
180
181	class TimetableFetcher extends AsyncTask<String,Void,Void> {
182
183
184	@Override
185	protected void onPostExecute(Void result) {
186	super.onPostExecute(result);
187	dismissDialog(DLG_PROGRESS);
188
189	//TODO: differentiate between a communication error and a downed bane.dk site
190	if (timetables != null) {
191	commFailCounter = 0;
192	TimetableList.this.getListView().invalidateViews();
193	adapter.setTimetable(timetables);
194	if (timetables.entries.size() == 0) {
195	MessageBox.showMessage(TimetableList.this, getString(timetablelist_nodata), true);
196	}
197	} else { // communication or parse error
198	commFailCounter++;
199	AlertDialog.Builder builder = new AlertDialog.Builder(TimetableList.this);
200	builder.setMessage(getString(timetablelist_fetcherror));
201	builder.setCancelable(true);
202	if (commFailCounter < 3) {
203	builder.setPositiveButton(getString(generic_retry), new DialogInterface.OnClickListener() {
204	public void onClick(DialogInterface dialog, int id) {
205	dialog.dismiss();
206	startTimetableFetcher();
207
208	}
209	});
210	}
211	builder.setNegativeButton(getString(generic_cancel), new DialogInterface.OnClickListener() {
212	public void onClick(DialogInterface dialog, int id) {
213	dialog.dismiss();
214	TimetableList.this.finish();
215	}
216	});
217
218	try {
219	builder.show();
220	} catch (android.view.WindowManager.BadTokenException e) {
221	Log.i("TimetableList", "BadTokenException"); // this can happen if the user switched away from this activity, while doInBackground was running
222	}
223
224	}
225
226	}
227
228	@Override
229	protected Void doInBackground(String... arg0) {
230	String type = arg0[0];
231	String trainID = arg0[1];
232	timetables = provider.lookupTimetable(type, trainID);
233
234	return null;
235	}
236
237	}
238	}