XmppActivity.java

  1package eu.siacs.conversations.ui;
  2
  3import android.annotation.SuppressLint;
  4import android.annotation.TargetApi;
  5import android.app.ActionBar;
  6import android.app.Activity;
  7import android.app.AlertDialog;
  8import android.app.AlertDialog.Builder;
  9import android.app.PendingIntent;
 10import android.content.ClipData;
 11import android.content.ClipboardManager;
 12import android.content.ComponentName;
 13import android.content.Context;
 14import android.content.DialogInterface;
 15import android.content.DialogInterface.OnClickListener;
 16import android.content.Intent;
 17import android.content.IntentSender.SendIntentException;
 18import android.content.ServiceConnection;
 19import android.content.SharedPreferences;
 20import android.content.pm.PackageManager;
 21import android.content.pm.ResolveInfo;
 22import android.content.res.Resources;
 23import android.graphics.Bitmap;
 24import android.graphics.Color;
 25import android.graphics.Point;
 26import android.graphics.drawable.BitmapDrawable;
 27import android.graphics.drawable.Drawable;
 28import android.net.Uri;
 29import android.nfc.NdefMessage;
 30import android.nfc.NdefRecord;
 31import android.nfc.NfcAdapter;
 32import android.nfc.NfcEvent;
 33import android.os.AsyncTask;
 34import android.os.Build;
 35import android.os.Bundle;
 36import android.os.Handler;
 37import android.os.IBinder;
 38import android.os.SystemClock;
 39import android.preference.PreferenceManager;
 40import android.text.InputType;
 41import android.util.DisplayMetrics;
 42import android.util.Log;
 43import android.view.MenuItem;
 44import android.view.View;
 45import android.view.inputmethod.InputMethodManager;
 46import android.widget.EditText;
 47import android.widget.ImageView;
 48import android.widget.Toast;
 49
 50import com.google.zxing.BarcodeFormat;
 51import com.google.zxing.EncodeHintType;
 52import com.google.zxing.WriterException;
 53import com.google.zxing.common.BitMatrix;
 54import com.google.zxing.qrcode.QRCodeWriter;
 55import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
 56
 57import net.java.otr4j.session.SessionID;
 58
 59import java.io.FileNotFoundException;
 60import java.lang.ref.WeakReference;
 61import java.util.ArrayList;
 62import java.util.Hashtable;
 63import java.util.List;
 64import java.util.concurrent.RejectedExecutionException;
 65
 66import eu.siacs.conversations.Config;
 67import eu.siacs.conversations.R;
 68import eu.siacs.conversations.entities.Account;
 69import eu.siacs.conversations.entities.Contact;
 70import eu.siacs.conversations.entities.Conversation;
 71import eu.siacs.conversations.entities.Message;
 72import eu.siacs.conversations.entities.MucOptions;
 73import eu.siacs.conversations.entities.Presences;
 74import eu.siacs.conversations.services.AvatarService;
 75import eu.siacs.conversations.services.XmppConnectionService;
 76import eu.siacs.conversations.services.XmppConnectionService.XmppConnectionBinder;
 77import eu.siacs.conversations.utils.ExceptionHelper;
 78import eu.siacs.conversations.xmpp.OnUpdateBlocklist;
 79import eu.siacs.conversations.xmpp.jid.InvalidJidException;
 80import eu.siacs.conversations.xmpp.jid.Jid;
 81
 82public abstract class XmppActivity extends Activity {
 83
 84	protected static final int REQUEST_ANNOUNCE_PGP = 0x0101;
 85	protected static final int REQUEST_INVITE_TO_CONVERSATION = 0x0102;
 86
 87	public XmppConnectionService xmppConnectionService;
 88	public boolean xmppConnectionServiceBound = false;
 89	protected boolean registeredListeners = false;
 90
 91	protected int mPrimaryTextColor;
 92	protected int mSecondaryTextColor;
 93	protected int mPrimaryBackgroundColor;
 94	protected int mSecondaryBackgroundColor;
 95	protected int mColorRed;
 96	protected int mColorOrange;
 97	protected int mColorGreen;
 98	protected int mPrimaryColor;
 99
100	protected boolean mUseSubject = true;
101
102	private DisplayMetrics metrics;
103	protected int mTheme;
104	protected boolean mUsingEnterKey = false;
105
106	private long mLastUiRefresh = 0;
107	private Handler mRefreshUiHandler = new Handler();
108	private Runnable mRefreshUiRunnable = new Runnable() {
109		@Override
110		public void run() {
111			mLastUiRefresh = SystemClock.elapsedRealtime();
112			refreshUiReal();
113		}
114	};
115
116	protected ConferenceInvite mPendingConferenceInvite = null;
117
118
119	protected void refreshUi() {
120		final long diff = SystemClock.elapsedRealtime() - mLastUiRefresh;
121		if (diff > Config.REFRESH_UI_INTERVAL) {
122			mRefreshUiHandler.removeCallbacks(mRefreshUiRunnable);
123			runOnUiThread(mRefreshUiRunnable);
124		} else {
125			final long next = Config.REFRESH_UI_INTERVAL - diff;
126			mRefreshUiHandler.removeCallbacks(mRefreshUiRunnable);
127			mRefreshUiHandler.postDelayed(mRefreshUiRunnable,next);
128		}
129	}
130
131	protected void refreshUiReal() {
132
133	};
134
135	protected interface OnValueEdited {
136		public void onValueEdited(String value);
137	}
138
139	public interface OnPresenceSelected {
140		public void onPresenceSelected();
141	}
142
143	protected ServiceConnection mConnection = new ServiceConnection() {
144
145		@Override
146		public void onServiceConnected(ComponentName className, IBinder service) {
147			XmppConnectionBinder binder = (XmppConnectionBinder) service;
148			xmppConnectionService = binder.getService();
149			xmppConnectionServiceBound = true;
150			if (!registeredListeners && shouldRegisterListeners()) {
151				registerListeners();
152				registeredListeners = true;
153			}
154			onBackendConnected();
155		}
156
157		@Override
158		public void onServiceDisconnected(ComponentName arg0) {
159			xmppConnectionServiceBound = false;
160		}
161	};
162
163	@Override
164	protected void onStart() {
165		super.onStart();
166		if (!xmppConnectionServiceBound) {
167			connectToBackend();
168		} else {
169			if (!registeredListeners) {
170				this.registerListeners();
171				this.registeredListeners = true;
172			}
173			this.onBackendConnected();
174		}
175	}
176
177	@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
178	protected boolean shouldRegisterListeners() {
179		if  (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
180			return !isDestroyed() && !isFinishing();
181		} else {
182			return !isFinishing();
183		}
184	}
185
186	public void connectToBackend() {
187		Intent intent = new Intent(this, XmppConnectionService.class);
188		intent.setAction("ui");
189		startService(intent);
190		bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
191	}
192
193	@Override
194	protected void onStop() {
195		super.onStop();
196		if (xmppConnectionServiceBound) {
197			if (registeredListeners) {
198				this.unregisterListeners();
199				this.registeredListeners = false;
200			}
201			unbindService(mConnection);
202			xmppConnectionServiceBound = false;
203		}
204	}
205
206	protected void hideKeyboard() {
207		InputMethodManager inputManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
208
209		View focus = getCurrentFocus();
210
211		if (focus != null) {
212
213			inputManager.hideSoftInputFromWindow(focus.getWindowToken(),
214					InputMethodManager.HIDE_NOT_ALWAYS);
215		}
216	}
217
218	public boolean hasPgp() {
219		return xmppConnectionService.getPgpEngine() != null;
220	}
221
222	public void showInstallPgpDialog() {
223		Builder builder = new AlertDialog.Builder(this);
224		builder.setTitle(getString(R.string.openkeychain_required));
225		builder.setIconAttribute(android.R.attr.alertDialogIcon);
226		builder.setMessage(getText(R.string.openkeychain_required_long));
227		builder.setNegativeButton(getString(R.string.cancel), null);
228		builder.setNeutralButton(getString(R.string.restart),
229				new OnClickListener() {
230
231					@Override
232					public void onClick(DialogInterface dialog, int which) {
233						if (xmppConnectionServiceBound) {
234							unbindService(mConnection);
235							xmppConnectionServiceBound = false;
236						}
237						stopService(new Intent(XmppActivity.this,
238									XmppConnectionService.class));
239						finish();
240					}
241				});
242		builder.setPositiveButton(getString(R.string.install),
243				new OnClickListener() {
244
245					@Override
246					public void onClick(DialogInterface dialog, int which) {
247						Uri uri = Uri
248							.parse("market://details?id=org.sufficientlysecure.keychain");
249						Intent marketIntent = new Intent(Intent.ACTION_VIEW,
250								uri);
251						PackageManager manager = getApplicationContext()
252							.getPackageManager();
253						List<ResolveInfo> infos = manager
254							.queryIntentActivities(marketIntent, 0);
255						if (infos.size() > 0) {
256							startActivity(marketIntent);
257						} else {
258							uri = Uri.parse("http://www.openkeychain.org/");
259							Intent browserIntent = new Intent(
260									Intent.ACTION_VIEW, uri);
261							startActivity(browserIntent);
262						}
263						finish();
264					}
265				});
266		builder.create().show();
267	}
268
269	abstract void onBackendConnected();
270
271	protected void registerListeners() {
272		if (this instanceof XmppConnectionService.OnConversationUpdate) {
273			this.xmppConnectionService.setOnConversationListChangedListener((XmppConnectionService.OnConversationUpdate) this);
274		}
275		if (this instanceof XmppConnectionService.OnAccountUpdate) {
276			this.xmppConnectionService.setOnAccountListChangedListener((XmppConnectionService.OnAccountUpdate) this);
277		}
278		if (this instanceof XmppConnectionService.OnRosterUpdate) {
279			this.xmppConnectionService.setOnRosterUpdateListener((XmppConnectionService.OnRosterUpdate) this);
280		}
281		if (this instanceof XmppConnectionService.OnMucRosterUpdate) {
282			this.xmppConnectionService.setOnMucRosterUpdateListener((XmppConnectionService.OnMucRosterUpdate) this);
283		}
284		if (this instanceof OnUpdateBlocklist) {
285			this.xmppConnectionService.setOnUpdateBlocklistListener((OnUpdateBlocklist) this);
286		}
287	}
288
289	protected void unregisterListeners() {
290		if (this instanceof XmppConnectionService.OnConversationUpdate) {
291			this.xmppConnectionService.removeOnConversationListChangedListener();
292		}
293		if (this instanceof XmppConnectionService.OnAccountUpdate) {
294			this.xmppConnectionService.removeOnAccountListChangedListener();
295		}
296		if (this instanceof XmppConnectionService.OnRosterUpdate) {
297			this.xmppConnectionService.removeOnRosterUpdateListener();
298		}
299		if (this instanceof XmppConnectionService.OnMucRosterUpdate) {
300			this.xmppConnectionService.removeOnMucRosterUpdateListener();
301		}
302		if (this instanceof OnUpdateBlocklist) {
303			this.xmppConnectionService.removeOnUpdateBlocklistListener();
304		}
305	}
306
307	@Override
308	public boolean onOptionsItemSelected(final MenuItem item) {
309		switch (item.getItemId()) {
310			case R.id.action_settings:
311				startActivity(new Intent(this, SettingsActivity.class));
312				break;
313			case R.id.action_accounts:
314				startActivity(new Intent(this, ManageAccountActivity.class));
315				break;
316			case android.R.id.home:
317				finish();
318				break;
319			case R.id.action_show_qr_code:
320				showQrCode();
321				break;
322		}
323		return super.onOptionsItemSelected(item);
324	}
325
326	@Override
327	protected void onCreate(Bundle savedInstanceState) {
328		super.onCreate(savedInstanceState);
329		metrics = getResources().getDisplayMetrics();
330		ExceptionHelper.init(getApplicationContext());
331		mPrimaryTextColor = getResources().getColor(R.color.primarytext);
332		mSecondaryTextColor = getResources().getColor(R.color.secondarytext);
333		mColorRed = getResources().getColor(R.color.red);
334		mColorOrange = getResources().getColor(R.color.orange);
335		mColorGreen = getResources().getColor(R.color.green);
336		mPrimaryColor = getResources().getColor(R.color.primary);
337		mPrimaryBackgroundColor = getResources().getColor(R.color.primarybackground);
338		mSecondaryBackgroundColor = getResources().getColor(R.color.secondarybackground);
339		this.mTheme = findTheme();
340		setTheme(this.mTheme);
341		this.mUsingEnterKey = usingEnterKey();
342		mUseSubject = getPreferences().getBoolean("use_subject", true);
343		final ActionBar ab = getActionBar();
344		if (ab!=null) {
345			ab.setDisplayHomeAsUpEnabled(true);
346		}
347	}
348
349	protected boolean usingEnterKey() {
350		return getPreferences().getBoolean("display_enter_key", false);
351	}
352
353	protected SharedPreferences getPreferences() {
354		return PreferenceManager
355			.getDefaultSharedPreferences(getApplicationContext());
356	}
357
358	public boolean useSubjectToIdentifyConference() {
359		return mUseSubject;
360	}
361
362	public void switchToConversation(Conversation conversation) {
363		switchToConversation(conversation, null, false);
364	}
365
366	public void switchToConversation(Conversation conversation, String text,
367			boolean newTask) {
368		switchToConversation(conversation,text,null,newTask);
369	}
370
371	public void highlightInMuc(Conversation conversation, String nick) {
372		switchToConversation(conversation, null, nick, false);
373	}
374
375	private void switchToConversation(Conversation conversation, String text, String nick, boolean newTask) {
376		Intent viewConversationIntent = new Intent(this,
377				ConversationActivity.class);
378		viewConversationIntent.setAction(Intent.ACTION_VIEW);
379		viewConversationIntent.putExtra(ConversationActivity.CONVERSATION,
380				conversation.getUuid());
381		if (text != null) {
382			viewConversationIntent.putExtra(ConversationActivity.TEXT, text);
383		}
384		if (nick != null) {
385			viewConversationIntent.putExtra(ConversationActivity.NICK, nick);
386		}
387		viewConversationIntent.setType(ConversationActivity.VIEW_CONVERSATION);
388		if (newTask) {
389			viewConversationIntent.setFlags(viewConversationIntent.getFlags()
390					| Intent.FLAG_ACTIVITY_NEW_TASK
391					| Intent.FLAG_ACTIVITY_SINGLE_TOP);
392		} else {
393			viewConversationIntent.setFlags(viewConversationIntent.getFlags()
394					| Intent.FLAG_ACTIVITY_CLEAR_TOP);
395		}
396		startActivity(viewConversationIntent);
397		finish();
398	}
399
400	public void switchToContactDetails(Contact contact) {
401		Intent intent = new Intent(this, ContactDetailsActivity.class);
402		intent.setAction(ContactDetailsActivity.ACTION_VIEW_CONTACT);
403		intent.putExtra("account", contact.getAccount().getJid().toBareJid().toString());
404		intent.putExtra("contact", contact.getJid().toString());
405		startActivity(intent);
406	}
407
408	public void switchToAccount(Account account) {
409		Intent intent = new Intent(this, EditAccountActivity.class);
410		intent.putExtra("jid", account.getJid().toBareJid().toString());
411		startActivity(intent);
412	}
413
414	protected void inviteToConversation(Conversation conversation) {
415		Intent intent = new Intent(getApplicationContext(),
416				ChooseContactActivity.class);
417		List<String> contacts = new ArrayList<>();
418		if (conversation.getMode() == Conversation.MODE_MULTI) {
419			for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
420				Jid jid = user.getJid();
421				if (jid != null) {
422					contacts.add(jid.toBareJid().toString());
423				}
424			}
425		} else {
426			contacts.add(conversation.getJid().toBareJid().toString());
427		}
428		intent.putExtra("filter_contacts", contacts.toArray(new String[contacts.size()]));
429		intent.putExtra("conversation", conversation.getUuid());
430		intent.putExtra("multiple", true);
431		startActivityForResult(intent, REQUEST_INVITE_TO_CONVERSATION);
432	}
433
434	protected void announcePgp(Account account, final Conversation conversation) {
435		xmppConnectionService.getPgpEngine().generateSignature(account,
436				"online", new UiCallback<Account>() {
437
438					@Override
439					public void userInputRequried(PendingIntent pi,
440												  Account account) {
441						try {
442							startIntentSenderForResult(pi.getIntentSender(),
443									REQUEST_ANNOUNCE_PGP, null, 0, 0, 0);
444						} catch (final SendIntentException ignored) {
445						}
446					}
447
448					@Override
449					public void success(Account account) {
450						xmppConnectionService.databaseBackend
451								.updateAccount(account);
452						xmppConnectionService.sendPresence(account);
453						if (conversation != null) {
454							conversation
455									.setNextEncryption(Message.ENCRYPTION_PGP);
456							xmppConnectionService.databaseBackend
457									.updateConversation(conversation);
458						}
459					}
460
461					@Override
462					public void error(int error, Account account) {
463						displayErrorDialog(error);
464					}
465				});
466	}
467
468	protected void displayErrorDialog(final int errorCode) {
469		runOnUiThread(new Runnable() {
470
471			@Override
472			public void run() {
473				AlertDialog.Builder builder = new AlertDialog.Builder(
474						XmppActivity.this);
475				builder.setIconAttribute(android.R.attr.alertDialogIcon);
476				builder.setTitle(getString(R.string.error));
477				builder.setMessage(errorCode);
478				builder.setNeutralButton(R.string.accept, null);
479				builder.create().show();
480			}
481		});
482
483	}
484
485	protected void showAddToRosterDialog(final Conversation conversation) {
486		showAddToRosterDialog(conversation.getContact());
487	}
488
489	protected void showAddToRosterDialog(final Contact contact) {
490		AlertDialog.Builder builder = new AlertDialog.Builder(this);
491		builder.setTitle(contact.getJid().toString());
492		builder.setMessage(getString(R.string.not_in_roster));
493		builder.setNegativeButton(getString(R.string.cancel), null);
494		builder.setPositiveButton(getString(R.string.add_contact),
495				new DialogInterface.OnClickListener() {
496
497					@Override
498					public void onClick(DialogInterface dialog, int which) {
499						final Jid jid = contact.getJid();
500						Account account = contact.getAccount();
501						Contact contact = account.getRoster().getContact(jid);
502						xmppConnectionService.createContact(contact);
503					}
504				});
505		builder.create().show();
506	}
507
508	private void showAskForPresenceDialog(final Contact contact) {
509		AlertDialog.Builder builder = new AlertDialog.Builder(this);
510		builder.setTitle(contact.getJid().toString());
511		builder.setMessage(R.string.request_presence_updates);
512		builder.setNegativeButton(R.string.cancel, null);
513		builder.setPositiveButton(R.string.request_now,
514				new DialogInterface.OnClickListener() {
515
516					@Override
517					public void onClick(DialogInterface dialog, int which) {
518						if (xmppConnectionServiceBound) {
519							xmppConnectionService.sendPresencePacket(contact
520									.getAccount(), xmppConnectionService
521									.getPresenceGenerator()
522									.requestPresenceUpdatesFrom(contact));
523						}
524					}
525				});
526		builder.create().show();
527	}
528
529	private void warnMutalPresenceSubscription(final Conversation conversation,
530			final OnPresenceSelected listener) {
531		AlertDialog.Builder builder = new AlertDialog.Builder(this);
532		builder.setTitle(conversation.getContact().getJid().toString());
533		builder.setMessage(R.string.without_mutual_presence_updates);
534		builder.setNegativeButton(R.string.cancel, null);
535		builder.setPositiveButton(R.string.ignore, new OnClickListener() {
536
537			@Override
538			public void onClick(DialogInterface dialog, int which) {
539				conversation.setNextCounterpart(null);
540				if (listener != null) {
541					listener.onPresenceSelected();
542				}
543			}
544		});
545		builder.create().show();
546	}
547
548	protected void quickEdit(String previousValue, OnValueEdited callback) {
549		quickEdit(previousValue, callback, false);
550	}
551
552	protected void quickPasswordEdit(String previousValue,
553			OnValueEdited callback) {
554		quickEdit(previousValue, callback, true);
555	}
556
557	@SuppressLint("InflateParams")
558	private void quickEdit(final String previousValue,
559			final OnValueEdited callback, boolean password) {
560		AlertDialog.Builder builder = new AlertDialog.Builder(this);
561		View view = getLayoutInflater().inflate(R.layout.quickedit, null);
562		final EditText editor = (EditText) view.findViewById(R.id.editor);
563		OnClickListener mClickListener = new OnClickListener() {
564
565			@Override
566			public void onClick(DialogInterface dialog, int which) {
567				String value = editor.getText().toString();
568				if (!previousValue.equals(value) && value.trim().length() > 0) {
569					callback.onValueEdited(value);
570				}
571			}
572		};
573		if (password) {
574			editor.setInputType(InputType.TYPE_CLASS_TEXT
575					| InputType.TYPE_TEXT_VARIATION_PASSWORD);
576			editor.setHint(R.string.password);
577			builder.setPositiveButton(R.string.accept, mClickListener);
578		} else {
579			builder.setPositiveButton(R.string.edit, mClickListener);
580		}
581		editor.requestFocus();
582		editor.setText(previousValue);
583		builder.setView(view);
584		builder.setNegativeButton(R.string.cancel, null);
585		builder.create().show();
586	}
587
588	public void selectPresence(final Conversation conversation,
589			final OnPresenceSelected listener) {
590		final Contact contact = conversation.getContact();
591		if (conversation.hasValidOtrSession()) {
592			SessionID id = conversation.getOtrSession().getSessionID();
593			Jid jid;
594			try {
595				jid = Jid.fromString(id.getAccountID() + "/" + id.getUserID());
596			} catch (InvalidJidException e) {
597				jid = null;
598			}
599			conversation.setNextCounterpart(jid);
600			listener.onPresenceSelected();
601		} else 	if (!contact.showInRoster()) {
602			showAddToRosterDialog(conversation);
603		} else {
604			Presences presences = contact.getPresences();
605			if (presences.size() == 0) {
606				if (!contact.getOption(Contact.Options.TO)
607						&& !contact.getOption(Contact.Options.ASKING)
608						&& contact.getAccount().getStatus() == Account.State.ONLINE) {
609					showAskForPresenceDialog(contact);
610				} else if (!contact.getOption(Contact.Options.TO)
611						|| !contact.getOption(Contact.Options.FROM)) {
612					warnMutalPresenceSubscription(conversation, listener);
613				} else {
614					conversation.setNextCounterpart(null);
615					listener.onPresenceSelected();
616				}
617			} else if (presences.size() == 1) {
618				String presence = presences.asStringArray()[0];
619				try {
620					conversation.setNextCounterpart(Jid.fromParts(contact.getJid().getLocalpart(),contact.getJid().getDomainpart(),presence));
621				} catch (InvalidJidException e) {
622					conversation.setNextCounterpart(null);
623				}
624				listener.onPresenceSelected();
625			} else {
626				final StringBuilder presence = new StringBuilder();
627				AlertDialog.Builder builder = new AlertDialog.Builder(this);
628				builder.setTitle(getString(R.string.choose_presence));
629				final String[] presencesArray = presences.asStringArray();
630				int preselectedPresence = 0;
631				for (int i = 0; i < presencesArray.length; ++i) {
632					if (presencesArray[i].equals(contact.lastseen.presence)) {
633						preselectedPresence = i;
634						break;
635					}
636				}
637				presence.append(presencesArray[preselectedPresence]);
638				builder.setSingleChoiceItems(presencesArray,
639						preselectedPresence,
640						new DialogInterface.OnClickListener() {
641
642							@Override
643							public void onClick(DialogInterface dialog,
644									int which) {
645								presence.delete(0, presence.length());
646								presence.append(presencesArray[which]);
647							}
648						});
649				builder.setNegativeButton(R.string.cancel, null);
650				builder.setPositiveButton(R.string.ok, new OnClickListener() {
651
652					@Override
653					public void onClick(DialogInterface dialog, int which) {
654						try {
655							conversation.setNextCounterpart(Jid.fromParts(contact.getJid().getLocalpart(),contact.getJid().getDomainpart(),presence.toString()));
656						} catch (InvalidJidException e) {
657							conversation.setNextCounterpart(null);
658						}
659						listener.onPresenceSelected();
660					}
661				});
662				builder.create().show();
663			}
664		}
665	}
666
667	protected void onActivityResult(int requestCode, int resultCode,
668			final Intent data) {
669		super.onActivityResult(requestCode, resultCode, data);
670		if (requestCode == REQUEST_INVITE_TO_CONVERSATION && resultCode == RESULT_OK) {
671			mPendingConferenceInvite = ConferenceInvite.parse(data);
672			if (xmppConnectionServiceBound && mPendingConferenceInvite != null) {
673				mPendingConferenceInvite.execute(this);
674				mPendingConferenceInvite = null;
675			}
676		}
677	}
678
679	private UiCallback<Conversation> adhocCallback = new UiCallback<Conversation>() {
680		@Override
681		public void success(final Conversation conversation) {
682			switchToConversation(conversation);
683			runOnUiThread(new Runnable() {
684				@Override
685				public void run() {
686					Toast.makeText(XmppActivity.this,R.string.conference_created,Toast.LENGTH_LONG).show();
687				}
688			});
689		}
690
691		@Override
692		public void error(final int errorCode, Conversation object) {
693			runOnUiThread(new Runnable() {
694				@Override
695				public void run() {
696					Toast.makeText(XmppActivity.this,errorCode,Toast.LENGTH_LONG).show();
697				}
698			});
699		}
700
701		@Override
702		public void userInputRequried(PendingIntent pi, Conversation object) {
703
704		}
705	};
706
707	public int getSecondaryTextColor() {
708		return this.mSecondaryTextColor;
709	}
710
711	public int getPrimaryTextColor() {
712		return this.mPrimaryTextColor;
713	}
714
715	public int getWarningTextColor() {
716		return this.mColorRed;
717	}
718
719	public int getPrimaryColor() {
720		return this.mPrimaryColor;
721	}
722
723	public int getOnlineColor() {
724		return this.mColorGreen;
725	}
726
727	public int getPrimaryBackgroundColor() {
728		return this.mPrimaryBackgroundColor;
729	}
730
731	public int getSecondaryBackgroundColor() {
732		return this.mSecondaryBackgroundColor;
733	}
734
735	public int getPixel(int dp) {
736		DisplayMetrics metrics = getResources().getDisplayMetrics();
737		return ((int) (dp * metrics.density));
738	}
739
740	public boolean copyTextToClipboard(String text, int labelResId) {
741		ClipboardManager mClipBoardManager = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
742		String label = getResources().getString(labelResId);
743		if (mClipBoardManager != null) {
744			ClipData mClipData = ClipData.newPlainText(label, text);
745			mClipBoardManager.setPrimaryClip(mClipData);
746			return true;
747		}
748		return false;
749	}
750
751	protected void registerNdefPushMessageCallback() {
752		NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(this);
753		if (nfcAdapter != null && nfcAdapter.isEnabled()) {
754			nfcAdapter.setNdefPushMessageCallback(new NfcAdapter.CreateNdefMessageCallback() {
755				@Override
756				public NdefMessage createNdefMessage(NfcEvent nfcEvent) {
757					return new NdefMessage(new NdefRecord[]{
758						NdefRecord.createUri(getShareableUri()),
759							NdefRecord.createApplicationRecord("eu.siacs.conversations")
760					});
761				}
762			}, this);
763		}
764	}
765
766	protected void unregisterNdefPushMessageCallback() {
767		NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(this);
768		if (nfcAdapter != null && nfcAdapter.isEnabled()) {
769			nfcAdapter.setNdefPushMessageCallback(null,this);
770		}
771	}
772
773	protected String getShareableUri() {
774		return null;
775	}
776
777	@Override
778	public void onResume() {
779		super.onResume();
780		if (this.getShareableUri()!=null) {
781			this.registerNdefPushMessageCallback();
782		}
783	}
784
785	protected int findTheme() {
786		if (getPreferences().getBoolean("use_larger_font", false)) {
787			return R.style.ConversationsTheme_LargerText;
788		} else {
789			return R.style.ConversationsTheme;
790		}
791	}
792
793	@Override
794	public void onPause() {
795		super.onPause();
796		this.unregisterNdefPushMessageCallback();
797	}
798
799	protected void showQrCode() {
800		String uri = getShareableUri();
801		if (uri!=null) {
802			Point size = new Point();
803			getWindowManager().getDefaultDisplay().getSize(size);
804			final int width = (size.x < size.y ? size.x : size.y);
805			Bitmap bitmap = createQrCodeBitmap(uri, width);
806			ImageView view = new ImageView(this);
807			view.setImageBitmap(bitmap);
808			AlertDialog.Builder builder = new AlertDialog.Builder(this);
809			builder.setView(view);
810			builder.create().show();
811		}
812	}
813
814	protected Bitmap createQrCodeBitmap(String input, int size) {
815		Log.d(Config.LOGTAG,"qr code requested size: "+size);
816		try {
817			final QRCodeWriter QR_CODE_WRITER = new QRCodeWriter();
818			final Hashtable<EncodeHintType, Object> hints = new Hashtable<>();
819			hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
820			final BitMatrix result = QR_CODE_WRITER.encode(input, BarcodeFormat.QR_CODE, size, size, hints);
821			final int width = result.getWidth();
822			final int height = result.getHeight();
823			final int[] pixels = new int[width * height];
824			for (int y = 0; y < height; y++) {
825				final int offset = y * width;
826				for (int x = 0; x < width; x++) {
827					pixels[offset + x] = result.get(x, y) ? Color.BLACK : Color.TRANSPARENT;
828				}
829			}
830			final Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
831			Log.d(Config.LOGTAG,"output size: "+width+"x"+height);
832			bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
833			return bitmap;
834		} catch (final WriterException e) {
835			return null;
836		}
837	}
838
839	public static class ConferenceInvite {
840		private String uuid;
841		private List<Jid> jids = new ArrayList<>();
842
843		public static ConferenceInvite parse(Intent data) {
844			ConferenceInvite invite = new ConferenceInvite();
845			invite.uuid = data.getStringExtra("conversation");
846			if (invite.uuid == null) {
847				return null;
848			}
849			try {
850				if (data.getBooleanExtra("multiple", false)) {
851					String[] toAdd = data.getStringArrayExtra("contacts");
852					for (String item : toAdd) {
853						invite.jids.add(Jid.fromString(item));
854					}
855				} else {
856					invite.jids.add(Jid.fromString(data.getStringExtra("contact")));
857				}
858			} catch (final InvalidJidException ignored) {
859				return null;
860			}
861			return invite;
862		}
863
864		public void execute(XmppActivity activity) {
865			XmppConnectionService service = activity.xmppConnectionService;
866			Conversation conversation = service.findConversationByUuid(this.uuid);
867			if (conversation == null) {
868				return;
869			}
870			if (conversation.getMode() == Conversation.MODE_MULTI) {
871				for (Jid jid : jids) {
872					service.invite(conversation, jid);
873				}
874			} else {
875				jids.add(conversation.getJid().toBareJid());
876				service.createAdhocConference(conversation.getAccount(), jids, activity.adhocCallback);
877			}
878		}
879	}
880
881	public AvatarService avatarService() {
882		return xmppConnectionService.getAvatarService();
883	}
884
885	class BitmapWorkerTask extends AsyncTask<Message, Void, Bitmap> {
886		private final WeakReference<ImageView> imageViewReference;
887		private Message message = null;
888
889		public BitmapWorkerTask(ImageView imageView) {
890			imageViewReference = new WeakReference<>(imageView);
891		}
892
893		@Override
894		protected Bitmap doInBackground(Message... params) {
895			message = params[0];
896			try {
897				return xmppConnectionService.getFileBackend().getThumbnail(
898						message, (int) (metrics.density * 288), false);
899			} catch (FileNotFoundException e) {
900				return null;
901			}
902		}
903
904		@Override
905		protected void onPostExecute(Bitmap bitmap) {
906			if (bitmap != null) {
907				final ImageView imageView = imageViewReference.get();
908				if (imageView != null) {
909					imageView.setImageBitmap(bitmap);
910					imageView.setBackgroundColor(0x00000000);
911				}
912			}
913		}
914	}
915
916	public void loadBitmap(Message message, ImageView imageView) {
917		Bitmap bm;
918		try {
919			bm = xmppConnectionService.getFileBackend().getThumbnail(message,
920					(int) (metrics.density * 288), true);
921		} catch (FileNotFoundException e) {
922			bm = null;
923		}
924		if (bm != null) {
925			imageView.setImageBitmap(bm);
926			imageView.setBackgroundColor(0x00000000);
927		} else {
928			if (cancelPotentialWork(message, imageView)) {
929				imageView.setBackgroundColor(0xff333333);
930				final BitmapWorkerTask task = new BitmapWorkerTask(imageView);
931				final AsyncDrawable asyncDrawable = new AsyncDrawable(
932						getResources(), null, task);
933				imageView.setImageDrawable(asyncDrawable);
934				try {
935					task.execute(message);
936				} catch (final RejectedExecutionException ignored) {
937				}
938			}
939		}
940	}
941
942	public static boolean cancelPotentialWork(Message message,
943			ImageView imageView) {
944		final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
945
946		if (bitmapWorkerTask != null) {
947			final Message oldMessage = bitmapWorkerTask.message;
948			if (oldMessage == null || message != oldMessage) {
949				bitmapWorkerTask.cancel(true);
950			} else {
951				return false;
952			}
953		}
954		return true;
955	}
956
957	private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
958		if (imageView != null) {
959			final Drawable drawable = imageView.getDrawable();
960			if (drawable instanceof AsyncDrawable) {
961				final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
962				return asyncDrawable.getBitmapWorkerTask();
963			}
964		}
965		return null;
966	}
967
968	static class AsyncDrawable extends BitmapDrawable {
969		private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
970
971		public AsyncDrawable(Resources res, Bitmap bitmap,
972				BitmapWorkerTask bitmapWorkerTask) {
973			super(res, bitmap);
974			bitmapWorkerTaskReference = new WeakReference<>(
975					bitmapWorkerTask);
976		}
977
978		public BitmapWorkerTask getBitmapWorkerTask() {
979			return bitmapWorkerTaskReference.get();
980		}
981	}
982}