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