1package eu.siacs.conversations.ui;
2
3import android.annotation.SuppressLint;
4import android.annotation.TargetApi;
5import android.app.Activity;
6import android.app.AlertDialog;
7import android.app.AlertDialog.Builder;
8import android.app.PendingIntent;
9import android.content.ClipData;
10import android.content.ClipboardManager;
11import android.content.ComponentName;
12import android.content.Context;
13import android.content.DialogInterface;
14import android.content.DialogInterface.OnClickListener;
15import android.content.Intent;
16import android.content.IntentSender.SendIntentException;
17import android.content.ServiceConnection;
18import android.content.SharedPreferences;
19import android.content.pm.PackageManager;
20import android.content.pm.ResolveInfo;
21import android.content.res.Resources;
22import android.graphics.Bitmap;
23import android.graphics.Color;
24import android.graphics.Point;
25import android.graphics.drawable.BitmapDrawable;
26import android.graphics.drawable.Drawable;
27import android.net.Uri;
28import android.nfc.NdefMessage;
29import android.nfc.NdefRecord;
30import android.nfc.NfcAdapter;
31import android.nfc.NfcEvent;
32import android.os.AsyncTask;
33import android.os.Build;
34import android.os.Bundle;
35import android.os.IBinder;
36import android.preference.PreferenceManager;
37import android.text.InputType;
38import android.util.DisplayMetrics;
39import android.util.Log;
40import android.view.MenuItem;
41import android.view.View;
42import android.view.inputmethod.InputMethodManager;
43import android.widget.EditText;
44import android.widget.ImageView;
45import android.widget.Toast;
46
47import com.google.zxing.BarcodeFormat;
48import com.google.zxing.EncodeHintType;
49import com.google.zxing.WriterException;
50import com.google.zxing.common.BitMatrix;
51import com.google.zxing.qrcode.QRCodeWriter;
52import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
53
54import net.java.otr4j.session.SessionID;
55
56import java.io.FileNotFoundException;
57import java.lang.ref.WeakReference;
58import java.util.ArrayList;
59import java.util.Hashtable;
60import java.util.List;
61import java.util.concurrent.RejectedExecutionException;
62
63import eu.siacs.conversations.Config;
64import eu.siacs.conversations.R;
65import eu.siacs.conversations.entities.Account;
66import eu.siacs.conversations.entities.Contact;
67import eu.siacs.conversations.entities.Conversation;
68import eu.siacs.conversations.entities.Message;
69import eu.siacs.conversations.entities.Presences;
70import eu.siacs.conversations.services.AvatarService;
71import eu.siacs.conversations.services.XmppConnectionService;
72import eu.siacs.conversations.services.XmppConnectionService.XmppConnectionBinder;
73import eu.siacs.conversations.utils.ExceptionHelper;
74import eu.siacs.conversations.xmpp.jid.InvalidJidException;
75import eu.siacs.conversations.xmpp.jid.Jid;
76
77public abstract class XmppActivity extends Activity {
78
79 protected static final int REQUEST_ANNOUNCE_PGP = 0x0101;
80 protected static final int REQUEST_INVITE_TO_CONVERSATION = 0x0102;
81
82 public XmppConnectionService xmppConnectionService;
83 public boolean xmppConnectionServiceBound = false;
84 protected boolean registeredListeners = false;
85
86 protected int mPrimaryTextColor;
87 protected int mSecondaryTextColor;
88 protected int mSecondaryBackgroundColor;
89 protected int mColorRed;
90 protected int mColorOrange;
91 protected int mColorGreen;
92 protected int mPrimaryColor;
93
94 protected boolean mUseSubject = true;
95
96 private DisplayMetrics metrics;
97
98 protected interface OnValueEdited {
99 public void onValueEdited(String value);
100 }
101
102 public interface OnPresenceSelected {
103 public void onPresenceSelected();
104 }
105
106 protected ServiceConnection mConnection = new ServiceConnection() {
107
108 @Override
109 public void onServiceConnected(ComponentName className, IBinder service) {
110 XmppConnectionBinder binder = (XmppConnectionBinder) service;
111 xmppConnectionService = binder.getService();
112 xmppConnectionServiceBound = true;
113 if (!registeredListeners && shouldRegisterListeners()) {
114 registerListeners();
115 registeredListeners = true;
116 }
117 onBackendConnected();
118 }
119
120 @Override
121 public void onServiceDisconnected(ComponentName arg0) {
122 xmppConnectionServiceBound = false;
123 }
124 };
125
126 @Override
127 protected void onStart() {
128 super.onStart();
129 if (!xmppConnectionServiceBound) {
130 connectToBackend();
131 } else {
132 if (!registeredListeners) {
133 this.registerListeners();
134 this.registeredListeners = true;
135 }
136 this.onBackendConnected();
137 }
138 }
139
140 @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
141 protected boolean shouldRegisterListeners() {
142 if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
143 return !isDestroyed() && !isFinishing();
144 } else {
145 return !isFinishing();
146 }
147 }
148
149 public void connectToBackend() {
150 Intent intent = new Intent(this, XmppConnectionService.class);
151 intent.setAction("ui");
152 startService(intent);
153 bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
154 }
155
156 @Override
157 protected void onStop() {
158 super.onStop();
159 if (xmppConnectionServiceBound) {
160 if (registeredListeners) {
161 this.unregisterListeners();
162 this.registeredListeners = false;
163 }
164 unbindService(mConnection);
165 xmppConnectionServiceBound = false;
166 }
167 }
168
169 protected void hideKeyboard() {
170 InputMethodManager inputManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
171
172 View focus = getCurrentFocus();
173
174 if (focus != null) {
175
176 inputManager.hideSoftInputFromWindow(focus.getWindowToken(),
177 InputMethodManager.HIDE_NOT_ALWAYS);
178 }
179 }
180
181 public boolean hasPgp() {
182 return xmppConnectionService.getPgpEngine() != null;
183 }
184
185 public void showInstallPgpDialog() {
186 Builder builder = new AlertDialog.Builder(this);
187 builder.setTitle(getString(R.string.openkeychain_required));
188 builder.setIconAttribute(android.R.attr.alertDialogIcon);
189 builder.setMessage(getText(R.string.openkeychain_required_long));
190 builder.setNegativeButton(getString(R.string.cancel), null);
191 builder.setNeutralButton(getString(R.string.restart),
192 new OnClickListener() {
193
194 @Override
195 public void onClick(DialogInterface dialog, int which) {
196 if (xmppConnectionServiceBound) {
197 unbindService(mConnection);
198 xmppConnectionServiceBound = false;
199 }
200 stopService(new Intent(XmppActivity.this,
201 XmppConnectionService.class));
202 finish();
203 }
204 });
205 builder.setPositiveButton(getString(R.string.install),
206 new OnClickListener() {
207
208 @Override
209 public void onClick(DialogInterface dialog, int which) {
210 Uri uri = Uri
211 .parse("market://details?id=org.sufficientlysecure.keychain");
212 Intent marketIntent = new Intent(Intent.ACTION_VIEW,
213 uri);
214 PackageManager manager = getApplicationContext()
215 .getPackageManager();
216 List<ResolveInfo> infos = manager
217 .queryIntentActivities(marketIntent, 0);
218 if (infos.size() > 0) {
219 startActivity(marketIntent);
220 } else {
221 uri = Uri.parse("http://www.openkeychain.org/");
222 Intent browserIntent = new Intent(
223 Intent.ACTION_VIEW, uri);
224 startActivity(browserIntent);
225 }
226 finish();
227 }
228 });
229 builder.create().show();
230 }
231
232 abstract void onBackendConnected();
233
234 protected void registerListeners() {
235 if (this instanceof XmppConnectionService.OnConversationUpdate) {
236 this.xmppConnectionService.setOnConversationListChangedListener((XmppConnectionService.OnConversationUpdate) this);
237 }
238 if (this instanceof XmppConnectionService.OnAccountUpdate) {
239 this.xmppConnectionService.setOnAccountListChangedListener((XmppConnectionService.OnAccountUpdate) this);
240 }
241 if (this instanceof XmppConnectionService.OnRosterUpdate) {
242 this.xmppConnectionService.setOnRosterUpdateListener((XmppConnectionService.OnRosterUpdate) this);
243 }
244 }
245
246 protected void unregisterListeners() {
247 if (this instanceof XmppConnectionService.OnConversationUpdate) {
248 this.xmppConnectionService.removeOnConversationListChangedListener();
249 }
250 if (this instanceof XmppConnectionService.OnAccountUpdate) {
251 this.xmppConnectionService.removeOnAccountListChangedListener();
252 }
253 if (this instanceof XmppConnectionService.OnRosterUpdate) {
254 this.xmppConnectionService.removeOnRosterUpdateListener();
255 }
256 }
257
258 public boolean onOptionsItemSelected(MenuItem item) {
259 switch (item.getItemId()) {
260 case R.id.action_settings:
261 startActivity(new Intent(this, SettingsActivity.class));
262 break;
263 case R.id.action_accounts:
264 startActivity(new Intent(this, ManageAccountActivity.class));
265 break;
266 case android.R.id.home:
267 finish();
268 break;
269 case R.id.action_show_qr_code:
270 showQrCode();
271 break;
272 }
273 return super.onOptionsItemSelected(item);
274 }
275
276 @Override
277 protected void onCreate(Bundle savedInstanceState) {
278 super.onCreate(savedInstanceState);
279 metrics = getResources().getDisplayMetrics();
280 ExceptionHelper.init(getApplicationContext());
281 mPrimaryTextColor = getResources().getColor(R.color.primarytext);
282 mSecondaryTextColor = getResources().getColor(R.color.secondarytext);
283 mColorRed = getResources().getColor(R.color.red);
284 mColorOrange = getResources().getColor(R.color.orange);
285 mColorGreen = getResources().getColor(R.color.green);
286 mPrimaryColor = getResources().getColor(R.color.primary);
287 mSecondaryBackgroundColor = getResources().getColor(
288 R.color.secondarybackground);
289 if (getPreferences().getBoolean("use_larger_font", false)) {
290 setTheme(R.style.ConversationsTheme_LargerText);
291 }
292 mUseSubject = getPreferences().getBoolean("use_subject", true);
293 }
294
295 protected SharedPreferences getPreferences() {
296 return PreferenceManager
297 .getDefaultSharedPreferences(getApplicationContext());
298 }
299
300 public boolean useSubjectToIdentifyConference() {
301 return mUseSubject;
302 }
303
304 public void switchToConversation(Conversation conversation) {
305 switchToConversation(conversation, null, false);
306 }
307
308 public void switchToConversation(Conversation conversation, String text,
309 boolean newTask) {
310 switchToConversation(conversation,text,null,newTask);
311 }
312
313 public void highlightInMuc(Conversation conversation, String nick) {
314 switchToConversation(conversation,null,nick,false);
315 }
316
317 private void switchToConversation(Conversation conversation, String text, String nick, boolean newTask) {
318 Intent viewConversationIntent = new Intent(this,
319 ConversationActivity.class);
320 viewConversationIntent.setAction(Intent.ACTION_VIEW);
321 viewConversationIntent.putExtra(ConversationActivity.CONVERSATION,
322 conversation.getUuid());
323 if (text != null) {
324 viewConversationIntent.putExtra(ConversationActivity.TEXT, text);
325 }
326 if (nick != null) {
327 viewConversationIntent.putExtra(ConversationActivity.NICK, nick);
328 }
329 viewConversationIntent.setType(ConversationActivity.VIEW_CONVERSATION);
330 if (newTask) {
331 viewConversationIntent.setFlags(viewConversationIntent.getFlags()
332 | Intent.FLAG_ACTIVITY_NEW_TASK
333 | Intent.FLAG_ACTIVITY_SINGLE_TOP);
334 } else {
335 viewConversationIntent.setFlags(viewConversationIntent.getFlags()
336 | Intent.FLAG_ACTIVITY_CLEAR_TOP);
337 }
338 startActivity(viewConversationIntent);
339 finish();
340 }
341
342 public void switchToContactDetails(Contact contact) {
343 Intent intent = new Intent(this, ContactDetailsActivity.class);
344 intent.setAction(ContactDetailsActivity.ACTION_VIEW_CONTACT);
345 intent.putExtra("account", contact.getAccount().getJid().toBareJid().toString());
346 intent.putExtra("contact", contact.getJid().toString());
347 startActivity(intent);
348 }
349
350 public void switchToAccount(Account account) {
351 Intent intent = new Intent(this, EditAccountActivity.class);
352 intent.putExtra("jid", account.getJid().toBareJid().toString());
353 startActivity(intent);
354 }
355
356 protected void inviteToConversation(Conversation conversation) {
357 Intent intent = new Intent(getApplicationContext(),
358 ChooseContactActivity.class);
359 intent.putExtra("conversation", conversation.getUuid());
360 startActivityForResult(intent, REQUEST_INVITE_TO_CONVERSATION);
361 }
362
363 protected void announcePgp(Account account, final Conversation conversation) {
364 xmppConnectionService.getPgpEngine().generateSignature(account,
365 "online", new UiCallback<Account>() {
366
367 @Override
368 public void userInputRequried(PendingIntent pi,
369 Account account) {
370 try {
371 startIntentSenderForResult(pi.getIntentSender(),
372 REQUEST_ANNOUNCE_PGP, null, 0, 0, 0);
373 } catch (final SendIntentException ignored) {
374 }
375 }
376
377 @Override
378 public void success(Account account) {
379 xmppConnectionService.databaseBackend
380 .updateAccount(account);
381 xmppConnectionService.sendPresencePacket(account,
382 xmppConnectionService.getPresenceGenerator()
383 .sendPresence(account));
384 if (conversation != null) {
385 conversation
386 .setNextEncryption(Message.ENCRYPTION_PGP);
387 xmppConnectionService.databaseBackend
388 .updateConversation(conversation);
389 }
390 }
391
392 @Override
393 public void error(int error, Account account) {
394 displayErrorDialog(error);
395 }
396 });
397 }
398
399 protected void displayErrorDialog(final int errorCode) {
400 runOnUiThread(new Runnable() {
401
402 @Override
403 public void run() {
404 AlertDialog.Builder builder = new AlertDialog.Builder(
405 XmppActivity.this);
406 builder.setIconAttribute(android.R.attr.alertDialogIcon);
407 builder.setTitle(getString(R.string.error));
408 builder.setMessage(errorCode);
409 builder.setNeutralButton(R.string.accept, null);
410 builder.create().show();
411 }
412 });
413
414 }
415
416 protected void showAddToRosterDialog(final Conversation conversation) {
417 final Jid jid = conversation.getContactJid();
418 AlertDialog.Builder builder = new AlertDialog.Builder(this);
419 builder.setTitle(jid.toString());
420 builder.setMessage(getString(R.string.not_in_roster));
421 builder.setNegativeButton(getString(R.string.cancel), null);
422 builder.setPositiveButton(getString(R.string.add_contact),
423 new DialogInterface.OnClickListener() {
424
425 @Override
426 public void onClick(DialogInterface dialog, int which) {
427 final Jid jid = conversation.getContactJid();
428 Account account = conversation.getAccount();
429 Contact contact = account.getRoster().getContact(jid);
430 xmppConnectionService.createContact(contact);
431 switchToContactDetails(contact);
432 }
433 });
434 builder.create().show();
435 }
436
437 private void showAskForPresenceDialog(final Contact contact) {
438 AlertDialog.Builder builder = new AlertDialog.Builder(this);
439 builder.setTitle(contact.getJid().toString());
440 builder.setMessage(R.string.request_presence_updates);
441 builder.setNegativeButton(R.string.cancel, null);
442 builder.setPositiveButton(R.string.request_now,
443 new DialogInterface.OnClickListener() {
444
445 @Override
446 public void onClick(DialogInterface dialog, int which) {
447 if (xmppConnectionServiceBound) {
448 xmppConnectionService.sendPresencePacket(contact
449 .getAccount(), xmppConnectionService
450 .getPresenceGenerator()
451 .requestPresenceUpdatesFrom(contact));
452 }
453 }
454 });
455 builder.create().show();
456 }
457
458 private void warnMutalPresenceSubscription(final Conversation conversation,
459 final OnPresenceSelected listener) {
460 AlertDialog.Builder builder = new AlertDialog.Builder(this);
461 builder.setTitle(conversation.getContact().getJid().toString());
462 builder.setMessage(R.string.without_mutual_presence_updates);
463 builder.setNegativeButton(R.string.cancel, null);
464 builder.setPositiveButton(R.string.ignore, new OnClickListener() {
465
466 @Override
467 public void onClick(DialogInterface dialog, int which) {
468 conversation.setNextCounterpart(null);
469 if (listener != null) {
470 listener.onPresenceSelected();
471 }
472 }
473 });
474 builder.create().show();
475 }
476
477 protected void quickEdit(String previousValue, OnValueEdited callback) {
478 quickEdit(previousValue, callback, false);
479 }
480
481 protected void quickPasswordEdit(String previousValue,
482 OnValueEdited callback) {
483 quickEdit(previousValue, callback, true);
484 }
485
486 @SuppressLint("InflateParams")
487 private void quickEdit(final String previousValue,
488 final OnValueEdited callback, boolean password) {
489 AlertDialog.Builder builder = new AlertDialog.Builder(this);
490 View view = getLayoutInflater().inflate(R.layout.quickedit, null);
491 final EditText editor = (EditText) view.findViewById(R.id.editor);
492 OnClickListener mClickListener = new OnClickListener() {
493
494 @Override
495 public void onClick(DialogInterface dialog, int which) {
496 String value = editor.getText().toString();
497 if (!previousValue.equals(value) && value.trim().length() > 0) {
498 callback.onValueEdited(value);
499 }
500 }
501 };
502 if (password) {
503 editor.setInputType(InputType.TYPE_CLASS_TEXT
504 | InputType.TYPE_TEXT_VARIATION_PASSWORD);
505 editor.setHint(R.string.password);
506 builder.setPositiveButton(R.string.accept, mClickListener);
507 } else {
508 builder.setPositiveButton(R.string.edit, mClickListener);
509 }
510 editor.requestFocus();
511 editor.setText(previousValue);
512 builder.setView(view);
513 builder.setNegativeButton(R.string.cancel, null);
514 builder.create().show();
515 }
516
517 public void selectPresence(final Conversation conversation,
518 final OnPresenceSelected listener) {
519 final Contact contact = conversation.getContact();
520 if (conversation.hasValidOtrSession()) {
521 SessionID id = conversation.getOtrSession().getSessionID();
522 Jid jid;
523 try {
524 jid = Jid.fromString(id.getAccountID() + "/" + id.getUserID());
525 } catch (InvalidJidException e) {
526 jid = null;
527 }
528 conversation.setNextCounterpart(jid);
529 listener.onPresenceSelected();
530 } else if (!contact.showInRoster()) {
531 showAddToRosterDialog(conversation);
532 } else {
533 Presences presences = contact.getPresences();
534 if (presences.size() == 0) {
535 if (!contact.getOption(Contact.Options.TO)
536 && !contact.getOption(Contact.Options.ASKING)
537 && contact.getAccount().getStatus() == Account.State.ONLINE) {
538 showAskForPresenceDialog(contact);
539 } else if (!contact.getOption(Contact.Options.TO)
540 || !contact.getOption(Contact.Options.FROM)) {
541 warnMutalPresenceSubscription(conversation, listener);
542 } else {
543 conversation.setNextCounterpart(null);
544 listener.onPresenceSelected();
545 }
546 } else if (presences.size() == 1) {
547 String presence = presences.asStringArray()[0];
548 try {
549 conversation.setNextCounterpart(Jid.fromParts(contact.getJid().getLocalpart(),contact.getJid().getDomainpart(),presence));
550 } catch (InvalidJidException e) {
551 conversation.setNextCounterpart(null);
552 }
553 listener.onPresenceSelected();
554 } else {
555 final StringBuilder presence = new StringBuilder();
556 AlertDialog.Builder builder = new AlertDialog.Builder(this);
557 builder.setTitle(getString(R.string.choose_presence));
558 final String[] presencesArray = presences.asStringArray();
559 int preselectedPresence = 0;
560 for (int i = 0; i < presencesArray.length; ++i) {
561 if (presencesArray[i].equals(contact.lastseen.presence)) {
562 preselectedPresence = i;
563 break;
564 }
565 }
566 presence.append(presencesArray[preselectedPresence]);
567 builder.setSingleChoiceItems(presencesArray,
568 preselectedPresence,
569 new DialogInterface.OnClickListener() {
570
571 @Override
572 public void onClick(DialogInterface dialog,
573 int which) {
574 presence.delete(0, presence.length());
575 presence.append(presencesArray[which]);
576 }
577 });
578 builder.setNegativeButton(R.string.cancel, null);
579 builder.setPositiveButton(R.string.ok, new OnClickListener() {
580
581 @Override
582 public void onClick(DialogInterface dialog, int which) {
583 try {
584 conversation.setNextCounterpart(Jid.fromParts(contact.getJid().getLocalpart(),contact.getJid().getDomainpart(),presence.toString()));
585 } catch (InvalidJidException e) {
586 conversation.setNextCounterpart(null);
587 }
588 listener.onPresenceSelected();
589 }
590 });
591 builder.create().show();
592 }
593 }
594 }
595
596 protected void onActivityResult(int requestCode, int resultCode,
597 final Intent data) {
598 super.onActivityResult(requestCode, resultCode, data);
599 if (requestCode == REQUEST_INVITE_TO_CONVERSATION
600 && resultCode == RESULT_OK) {
601 try {
602 Jid jid = Jid.fromString(data.getStringExtra("contact"));
603 String conversationUuid = data.getStringExtra("conversation");
604 Conversation conversation = xmppConnectionService
605 .findConversationByUuid(conversationUuid);
606 if (conversation.getMode() == Conversation.MODE_MULTI) {
607 xmppConnectionService.invite(conversation, jid);
608 } else {
609 List<Jid> jids = new ArrayList<Jid>();
610 jids.add(conversation.getContactJid().toBareJid());
611 jids.add(jid);
612 xmppConnectionService.createAdhocConference(conversation.getAccount(), jids, adhocCallback);
613 }
614 } catch (final InvalidJidException ignored) {
615
616 }
617 }
618 }
619
620 private UiCallback<Conversation> adhocCallback = new UiCallback<Conversation>() {
621 @Override
622 public void success(final Conversation conversation) {
623 switchToConversation(conversation);
624 runOnUiThread(new Runnable() {
625 @Override
626 public void run() {
627 Toast.makeText(XmppActivity.this,R.string.conference_created,Toast.LENGTH_LONG).show();
628 }
629 });
630 }
631
632 @Override
633 public void error(final int errorCode, Conversation object) {
634 runOnUiThread(new Runnable() {
635 @Override
636 public void run() {
637 Toast.makeText(XmppActivity.this,errorCode,Toast.LENGTH_LONG).show();
638 }
639 });
640 }
641
642 @Override
643 public void userInputRequried(PendingIntent pi, Conversation object) {
644
645 }
646 };
647
648 public int getSecondaryTextColor() {
649 return this.mSecondaryTextColor;
650 }
651
652 public int getPrimaryTextColor() {
653 return this.mPrimaryTextColor;
654 }
655
656 public int getWarningTextColor() {
657 return this.mColorRed;
658 }
659
660 public int getPrimaryColor() {
661 return this.mPrimaryColor;
662 }
663
664 public int getSecondaryBackgroundColor() {
665 return this.mSecondaryBackgroundColor;
666 }
667
668 public int getPixel(int dp) {
669 DisplayMetrics metrics = getResources().getDisplayMetrics();
670 return ((int) (dp * metrics.density));
671 }
672
673 public boolean copyTextToClipboard(String text, int labelResId) {
674 ClipboardManager mClipBoardManager = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
675 String label = getResources().getString(labelResId);
676 if (mClipBoardManager != null) {
677 ClipData mClipData = ClipData.newPlainText(label, text);
678 mClipBoardManager.setPrimaryClip(mClipData);
679 return true;
680 }
681 return false;
682 }
683
684 protected void registerNdefPushMessageCallback() {
685 NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(this);
686 if (nfcAdapter != null && nfcAdapter.isEnabled()) {
687 nfcAdapter.setNdefPushMessageCallback(new NfcAdapter.CreateNdefMessageCallback() {
688 @Override
689 public NdefMessage createNdefMessage(NfcEvent nfcEvent) {
690 return new NdefMessage(new NdefRecord[]{
691 NdefRecord.createUri(getShareableUri()),
692 NdefRecord.createApplicationRecord("eu.siacs.conversations")
693 });
694 }
695 }, this);
696 }
697 }
698
699 protected void unregisterNdefPushMessageCallback() {
700 NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(this);
701 if (nfcAdapter != null && nfcAdapter.isEnabled()) {
702 nfcAdapter.setNdefPushMessageCallback(null,this);
703 }
704 }
705
706 protected String getShareableUri() {
707 return null;
708 }
709
710 @Override
711 public void onResume() {
712 super.onResume();
713 if (this.getShareableUri()!=null) {
714 this.registerNdefPushMessageCallback();
715 }
716 }
717
718 @Override
719 public void onPause() {
720 super.onPause();
721 this.unregisterNdefPushMessageCallback();
722 }
723
724 protected void showQrCode() {
725 String uri = getShareableUri();
726 if (uri!=null) {
727 Point size = new Point();
728 getWindowManager().getDefaultDisplay().getSize(size);
729 final int width = (size.x < size.y ? size.x : size.y);
730 Bitmap bitmap = createQrCodeBitmap(uri, width);
731 ImageView view = new ImageView(this);
732 view.setImageBitmap(bitmap);
733 AlertDialog.Builder builder = new AlertDialog.Builder(this);
734 builder.setView(view);
735 builder.create().show();
736 }
737 }
738
739 protected Bitmap createQrCodeBitmap(String input, int size) {
740 Log.d(Config.LOGTAG,"qr code requested size: "+size);
741 try {
742 final QRCodeWriter QR_CODE_WRITER = new QRCodeWriter();
743 final Hashtable<EncodeHintType, Object> hints = new Hashtable<>();
744 hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
745 final BitMatrix result = QR_CODE_WRITER.encode(input, BarcodeFormat.QR_CODE, size, size, hints);
746 final int width = result.getWidth();
747 final int height = result.getHeight();
748 final int[] pixels = new int[width * height];
749 for (int y = 0; y < height; y++) {
750 final int offset = y * width;
751 for (int x = 0; x < width; x++) {
752 pixels[offset + x] = result.get(x, y) ? Color.BLACK : Color.TRANSPARENT;
753 }
754 }
755 final Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
756 Log.d(Config.LOGTAG,"output size: "+width+"x"+height);
757 bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
758 return bitmap;
759 } catch (final WriterException e) {
760 return null;
761 }
762 }
763
764 public AvatarService avatarService() {
765 return xmppConnectionService.getAvatarService();
766 }
767
768 class BitmapWorkerTask extends AsyncTask<Message, Void, Bitmap> {
769 private final WeakReference<ImageView> imageViewReference;
770 private Message message = null;
771
772 public BitmapWorkerTask(ImageView imageView) {
773 imageViewReference = new WeakReference<>(imageView);
774 }
775
776 @Override
777 protected Bitmap doInBackground(Message... params) {
778 message = params[0];
779 try {
780 return xmppConnectionService.getFileBackend().getThumbnail(
781 message, (int) (metrics.density * 288), false);
782 } catch (FileNotFoundException e) {
783 return null;
784 }
785 }
786
787 @Override
788 protected void onPostExecute(Bitmap bitmap) {
789 if (bitmap != null) {
790 final ImageView imageView = imageViewReference.get();
791 if (imageView != null) {
792 imageView.setImageBitmap(bitmap);
793 imageView.setBackgroundColor(0x00000000);
794 }
795 }
796 }
797 }
798
799 public void loadBitmap(Message message, ImageView imageView) {
800 Bitmap bm;
801 try {
802 bm = xmppConnectionService.getFileBackend().getThumbnail(message,
803 (int) (metrics.density * 288), true);
804 } catch (FileNotFoundException e) {
805 bm = null;
806 }
807 if (bm != null) {
808 imageView.setImageBitmap(bm);
809 imageView.setBackgroundColor(0x00000000);
810 } else {
811 if (cancelPotentialWork(message, imageView)) {
812 imageView.setBackgroundColor(0xff333333);
813 final BitmapWorkerTask task = new BitmapWorkerTask(imageView);
814 final AsyncDrawable asyncDrawable = new AsyncDrawable(
815 getResources(), null, task);
816 imageView.setImageDrawable(asyncDrawable);
817 try {
818 task.execute(message);
819 } catch (final RejectedExecutionException ignored) {
820 }
821 }
822 }
823 }
824
825 public static boolean cancelPotentialWork(Message message,
826 ImageView imageView) {
827 final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
828
829 if (bitmapWorkerTask != null) {
830 final Message oldMessage = bitmapWorkerTask.message;
831 if (oldMessage == null || message != oldMessage) {
832 bitmapWorkerTask.cancel(true);
833 } else {
834 return false;
835 }
836 }
837 return true;
838 }
839
840 private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
841 if (imageView != null) {
842 final Drawable drawable = imageView.getDrawable();
843 if (drawable instanceof AsyncDrawable) {
844 final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
845 return asyncDrawable.getBitmapWorkerTask();
846 }
847 }
848 return null;
849 }
850
851 static class AsyncDrawable extends BitmapDrawable {
852 private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
853
854 public AsyncDrawable(Resources res, Bitmap bitmap,
855 BitmapWorkerTask bitmapWorkerTask) {
856 super(res, bitmap);
857 bitmapWorkerTaskReference = new WeakReference<>(
858 bitmapWorkerTask);
859 }
860
861 public BitmapWorkerTask getBitmapWorkerTask() {
862 return bitmapWorkerTaskReference.get();
863 }
864 }
865}