1package eu.siacs.conversations.ui.adapter;
  2
  3import android.content.ActivityNotFoundException;
  4import android.content.Intent;
  5import android.content.pm.PackageManager;
  6import android.content.pm.ResolveInfo;
  7import android.content.res.Resources;
  8import android.graphics.Bitmap;
  9import android.graphics.Typeface;
 10import android.graphics.drawable.BitmapDrawable;
 11import android.graphics.drawable.Drawable;
 12import android.net.Uri;
 13import android.os.AsyncTask;
 14import android.text.Spannable;
 15import android.text.SpannableString;
 16import android.text.Spanned;
 17import android.text.style.ForegroundColorSpan;
 18import android.text.style.RelativeSizeSpan;
 19import android.text.style.StyleSpan;
 20import android.util.DisplayMetrics;
 21import android.view.View;
 22import android.view.View.OnClickListener;
 23import android.view.View.OnLongClickListener;
 24import android.view.ViewGroup;
 25import android.widget.ArrayAdapter;
 26import android.widget.Button;
 27import android.widget.ImageView;
 28import android.widget.LinearLayout;
 29import android.widget.TextView;
 30import android.widget.Toast;
 31
 32import java.lang.ref.WeakReference;
 33import java.util.List;
 34import java.util.concurrent.RejectedExecutionException;
 35
 36import eu.siacs.conversations.R;
 37import eu.siacs.conversations.crypto.axolotl.XmppAxolotlSession;
 38import eu.siacs.conversations.entities.Account;
 39import eu.siacs.conversations.entities.Contact;
 40import eu.siacs.conversations.entities.Conversation;
 41import eu.siacs.conversations.entities.DownloadableFile;
 42import eu.siacs.conversations.entities.Message;
 43import eu.siacs.conversations.entities.Message.FileParams;
 44import eu.siacs.conversations.entities.Transferable;
 45import eu.siacs.conversations.ui.ConversationActivity;
 46import eu.siacs.conversations.utils.CryptoHelper;
 47import eu.siacs.conversations.utils.GeoHelper;
 48import eu.siacs.conversations.utils.UIHelper;
 49
 50public class MessageAdapter extends ArrayAdapter<Message> {
 51
 52	private static final int SENT = 0;
 53	private static final int RECEIVED = 1;
 54	private static final int STATUS = 2;
 55
 56	private ConversationActivity activity;
 57
 58	private DisplayMetrics metrics;
 59
 60	private OnContactPictureClicked mOnContactPictureClickedListener;
 61	private OnContactPictureLongClicked mOnContactPictureLongClickedListener;
 62
 63	private OnLongClickListener openContextMenu = new OnLongClickListener() {
 64
 65		@Override
 66		public boolean onLongClick(View v) {
 67			v.showContextMenu();
 68			return true;
 69		}
 70	};
 71	private boolean mIndicateReceived = false;
 72	private boolean mUseWhiteBackground = false;
 73
 74	public MessageAdapter(ConversationActivity activity, List<Message> messages) {
 75		super(activity, 0, messages);
 76		this.activity = activity;
 77		metrics = getContext().getResources().getDisplayMetrics();
 78		updatePreferences();
 79	}
 80
 81	public void setOnContactPictureClicked(OnContactPictureClicked listener) {
 82		this.mOnContactPictureClickedListener = listener;
 83	}
 84
 85	public void setOnContactPictureLongClicked(
 86			OnContactPictureLongClicked listener) {
 87		this.mOnContactPictureLongClickedListener = listener;
 88			}
 89
 90	@Override
 91	public int getViewTypeCount() {
 92		return 3;
 93	}
 94
 95	public int getItemViewType(Message message) {
 96		if (message.getType() == Message.TYPE_STATUS) {
 97			return STATUS;
 98		} else if (message.getStatus() <= Message.STATUS_RECEIVED) {
 99			return RECEIVED;
100		}
101
102		return SENT;
103	}
104
105	@Override
106	public int getItemViewType(int position) {
107		return this.getItemViewType(getItem(position));
108	}
109
110	private int getMessageTextColor(boolean onDark, boolean primary) {
111		if (onDark) {
112			return activity.getResources().getColor(primary ? R.color.white : R.color.white70);
113		} else {
114			return activity.getResources().getColor(primary ? R.color.black87 : R.color.black54);
115		}
116	}
117
118	private void displayStatus(ViewHolder viewHolder, Message message, int type, boolean darkBackground) {
119		String filesize = null;
120		String info = null;
121		boolean error = false;
122		if (viewHolder.indicatorReceived != null) {
123			viewHolder.indicatorReceived.setVisibility(View.GONE);
124		}
125		boolean multiReceived = message.getConversation().getMode() == Conversation.MODE_MULTI
126			&& message.getMergedStatus() <= Message.STATUS_RECEIVED;
127		if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE || message.getTransferable() != null) {
128			FileParams params = message.getFileParams();
129			if (params.size > (1.5 * 1024 * 1024)) {
130				filesize = params.size / (1024 * 1024)+ " MiB";
131			} else if (params.size > 0) {
132				filesize = params.size / 1024 + " KiB";
133			}
134			if (message.getTransferable() != null && message.getTransferable().getStatus() == Transferable.STATUS_FAILED) {
135				error = true;
136			}
137		}
138		switch (message.getMergedStatus()) {
139			case Message.STATUS_WAITING:
140				info = getContext().getString(R.string.waiting);
141				break;
142			case Message.STATUS_UNSEND:
143				Transferable d = message.getTransferable();
144				if (d!=null) {
145					info = getContext().getString(R.string.sending_file,d.getProgress());
146				} else {
147					info = getContext().getString(R.string.sending);
148				}
149				break;
150			case Message.STATUS_OFFERED:
151				info = getContext().getString(R.string.offering);
152				break;
153			case Message.STATUS_SEND_RECEIVED:
154				if (mIndicateReceived) {
155					viewHolder.indicatorReceived.setVisibility(View.VISIBLE);
156				}
157				break;
158			case Message.STATUS_SEND_DISPLAYED:
159				if (mIndicateReceived) {
160					viewHolder.indicatorReceived.setVisibility(View.VISIBLE);
161				}
162				break;
163			case Message.STATUS_SEND_FAILED:
164				info = getContext().getString(R.string.send_failed);
165				error = true;
166				break;
167			default:
168				if (multiReceived) {
169					info = UIHelper.getMessageDisplayName(message);
170				}
171				break;
172		}
173		if (error && type == SENT) {
174			viewHolder.time.setTextColor(activity.getWarningTextColor());
175		} else {
176			viewHolder.time.setTextColor(this.getMessageTextColor(darkBackground,false));
177		}
178		if (message.getEncryption() == Message.ENCRYPTION_NONE) {
179			viewHolder.indicator.setVisibility(View.GONE);
180		} else {
181			viewHolder.indicator.setImageResource(darkBackground ? R.drawable.ic_secure_indicator_white : R.drawable.ic_secure_indicator);
182			viewHolder.indicator.setVisibility(View.VISIBLE);
183			if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
184				XmppAxolotlSession.Trust trust = message.getConversation()
185						.getAccount().getAxolotlService().getFingerprintTrust(
186								message.getAxolotlFingerprint());
187
188				if(trust == null || trust != XmppAxolotlSession.Trust.TRUSTED) {
189					viewHolder.indicator.setColorFilter(activity.getWarningTextColor());
190					viewHolder.indicator.setAlpha(1.0f);
191				} else {
192					viewHolder.indicator.clearColorFilter();
193					if (darkBackground) {
194						viewHolder.indicator.setAlpha(0.7f);
195					} else {
196						viewHolder.indicator.setAlpha(0.57f);
197					}
198				}
199			} else {
200				viewHolder.indicator.clearColorFilter();
201				if (darkBackground) {
202					viewHolder.indicator.setAlpha(0.7f);
203				} else {
204					viewHolder.indicator.setAlpha(0.57f);
205				}
206			}
207		}
208
209		String formatedTime = UIHelper.readableTimeDifferenceFull(getContext(),
210				message.getMergedTimeSent());
211		if (message.getStatus() <= Message.STATUS_RECEIVED) {
212			if ((filesize != null) && (info != null)) {
213				viewHolder.time.setText(formatedTime + " \u00B7 " + filesize +" \u00B7 " + info);
214			} else if ((filesize == null) && (info != null)) {
215				viewHolder.time.setText(formatedTime + " \u00B7 " + info);
216			} else if ((filesize != null) && (info == null)) {
217				viewHolder.time.setText(formatedTime + " \u00B7 " + filesize);
218			} else {
219				viewHolder.time.setText(formatedTime);
220			}
221		} else {
222			if ((filesize != null) && (info != null)) {
223				viewHolder.time.setText(filesize + " \u00B7 " + info);
224			} else if ((filesize == null) && (info != null)) {
225				if (error) {
226					viewHolder.time.setText(info + " \u00B7 " + formatedTime);
227				} else {
228					viewHolder.time.setText(info);
229				}
230			} else if ((filesize != null) && (info == null)) {
231				viewHolder.time.setText(filesize + " \u00B7 " + formatedTime);
232			} else {
233				viewHolder.time.setText(formatedTime);
234			}
235		}
236	}
237
238	private void displayInfoMessage(ViewHolder viewHolder, String text, boolean darkBackground) {
239		if (viewHolder.download_button != null) {
240			viewHolder.download_button.setVisibility(View.GONE);
241		}
242		viewHolder.image.setVisibility(View.GONE);
243		viewHolder.messageBody.setVisibility(View.VISIBLE);
244		viewHolder.messageBody.setText(text);
245		viewHolder.messageBody.setTextColor(getMessageTextColor(darkBackground, false));
246		viewHolder.messageBody.setTypeface(null, Typeface.ITALIC);
247		viewHolder.messageBody.setTextIsSelectable(false);
248	}
249
250	private void displayDecryptionFailed(ViewHolder viewHolder, boolean darkBackground) {
251		if (viewHolder.download_button != null) {
252			viewHolder.download_button.setVisibility(View.GONE);
253		}
254		viewHolder.image.setVisibility(View.GONE);
255		viewHolder.messageBody.setVisibility(View.VISIBLE);
256		viewHolder.messageBody.setText(getContext().getString(
257				R.string.decryption_failed));
258		viewHolder.messageBody.setTextColor(getMessageTextColor(darkBackground, false));
259		viewHolder.messageBody.setTypeface(null, Typeface.NORMAL);
260		viewHolder.messageBody.setTextIsSelectable(false);
261	}
262
263	private void displayHeartMessage(final ViewHolder viewHolder, final String body) {
264		if (viewHolder.download_button != null) {
265			viewHolder.download_button.setVisibility(View.GONE);
266		}
267		viewHolder.image.setVisibility(View.GONE);
268		viewHolder.messageBody.setVisibility(View.VISIBLE);
269		viewHolder.messageBody.setIncludeFontPadding(false);
270		Spannable span = new SpannableString(body);
271		span.setSpan(new RelativeSizeSpan(4.0f), 0, body.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
272		span.setSpan(new ForegroundColorSpan(activity.getWarningTextColor()), 0, body.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
273		viewHolder.messageBody.setText(span);
274	}
275
276	private void displayTextMessage(final ViewHolder viewHolder, final Message message, boolean darkBackground) {
277		if (viewHolder.download_button != null) {
278			viewHolder.download_button.setVisibility(View.GONE);
279		}
280		viewHolder.image.setVisibility(View.GONE);
281		viewHolder.messageBody.setVisibility(View.VISIBLE);
282		viewHolder.messageBody.setIncludeFontPadding(true);
283		if (message.getBody() != null) {
284			final String nick = UIHelper.getMessageDisplayName(message);
285			String body;
286			try {
287				body = message.getMergedBody().replaceAll("^" + Message.ME_COMMAND, nick + " ");
288			} catch (ArrayIndexOutOfBoundsException e) {
289				body = message.getMergedBody();
290			}
291			final SpannableString formattedBody = new SpannableString(body);
292			int i = body.indexOf(Message.MERGE_SEPARATOR);
293			while(i >= 0) {
294				final int end = i + Message.MERGE_SEPARATOR.length();
295				formattedBody.setSpan(new RelativeSizeSpan(0.3f),i,end,Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
296				i = body.indexOf(Message.MERGE_SEPARATOR,end);
297			}
298			if (message.getType() != Message.TYPE_PRIVATE) {
299				if (message.hasMeCommand()) {
300					final Spannable span = new SpannableString(formattedBody);
301					span.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), 0, nick.length(),
302							Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
303					viewHolder.messageBody.setText(span);
304				} else {
305					viewHolder.messageBody.setText(formattedBody);
306				}
307			} else {
308				String privateMarker;
309				if (message.getStatus() <= Message.STATUS_RECEIVED) {
310					privateMarker = activity
311						.getString(R.string.private_message);
312				} else {
313					final String to;
314					if (message.getCounterpart() != null) {
315						to = message.getCounterpart().getResourcepart();
316					} else {
317						to = "";
318					}
319					privateMarker = activity.getString(R.string.private_message_to, to);
320				}
321				final Spannable span = new SpannableString(privateMarker + " "
322						+ formattedBody);
323				span.setSpan(new ForegroundColorSpan(getMessageTextColor(darkBackground,false)), 0, privateMarker
324						.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
325				span.setSpan(new StyleSpan(Typeface.BOLD), 0,
326						privateMarker.length(),
327						Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
328				if (message.hasMeCommand()) {
329					span.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), privateMarker.length() + 1,
330							privateMarker.length() + 1 + nick.length(),
331							Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
332				}
333				viewHolder.messageBody.setText(span);
334			}
335		} else {
336			viewHolder.messageBody.setText("");
337		}
338		viewHolder.messageBody.setTextColor(this.getMessageTextColor(darkBackground, true));
339		viewHolder.messageBody.setLinkTextColor(this.getMessageTextColor(darkBackground, true));
340		viewHolder.messageBody.setHighlightColor(activity.getResources().getColor(darkBackground ? R.color.grey800 : R.color.grey500));
341		viewHolder.messageBody.setTypeface(null, Typeface.NORMAL);
342		viewHolder.messageBody.setTextIsSelectable(true);
343	}
344
345	private void displayDownloadableMessage(ViewHolder viewHolder,
346			final Message message, String text) {
347		viewHolder.image.setVisibility(View.GONE);
348		viewHolder.messageBody.setVisibility(View.GONE);
349		viewHolder.download_button.setVisibility(View.VISIBLE);
350		viewHolder.download_button.setText(text);
351		viewHolder.download_button.setOnClickListener(new OnClickListener() {
352
353			@Override
354			public void onClick(View v) {
355				startDownloadable(message);
356			}
357		});
358		viewHolder.download_button.setOnLongClickListener(openContextMenu);
359	}
360
361	private void displayOpenableMessage(ViewHolder viewHolder,final Message message) {
362		viewHolder.image.setVisibility(View.GONE);
363		viewHolder.messageBody.setVisibility(View.GONE);
364		viewHolder.download_button.setVisibility(View.VISIBLE);
365		viewHolder.download_button.setText(activity.getString(R.string.open_x_file, UIHelper.getFileDescriptionString(activity, message)));
366		viewHolder.download_button.setOnClickListener(new OnClickListener() {
367
368			@Override
369			public void onClick(View v) {
370				openDownloadable(message);
371			}
372		});
373		viewHolder.download_button.setOnLongClickListener(openContextMenu);
374	}
375
376	private void displayLocationMessage(ViewHolder viewHolder, final Message message) {
377		viewHolder.image.setVisibility(View.GONE);
378		viewHolder.messageBody.setVisibility(View.GONE);
379		viewHolder.download_button.setVisibility(View.VISIBLE);
380		viewHolder.download_button.setText(R.string.show_location);
381		viewHolder.download_button.setOnClickListener(new OnClickListener() {
382
383			@Override
384			public void onClick(View v) {
385				showLocation(message);
386			}
387		});
388		viewHolder.download_button.setOnLongClickListener(openContextMenu);
389	}
390
391	private void displayImageMessage(ViewHolder viewHolder,
392			final Message message) {
393		if (viewHolder.download_button != null) {
394			viewHolder.download_button.setVisibility(View.GONE);
395		}
396		viewHolder.messageBody.setVisibility(View.GONE);
397		viewHolder.image.setVisibility(View.VISIBLE);
398		FileParams params = message.getFileParams();
399		double target = metrics.density * 288;
400		int scalledW;
401		int scalledH;
402		if (params.width <= params.height) {
403			scalledW = (int) (params.width / ((double) params.height / target));
404			scalledH = (int) target;
405		} else {
406			scalledW = (int) target;
407			scalledH = (int) (params.height / ((double) params.width / target));
408		}
409		LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(scalledW, scalledH);
410		layoutParams.setMargins(0, (int) (metrics.density * 4), 0, (int) (metrics.density * 4));
411		viewHolder.image.setLayoutParams(layoutParams);
412		activity.loadBitmap(message, viewHolder.image);
413		viewHolder.image.setOnClickListener(new OnClickListener() {
414
415			@Override
416			public void onClick(View v) {
417				openDownloadable(message);
418			}
419		});
420		viewHolder.image.setOnLongClickListener(openContextMenu);
421	}
422
423	@Override
424	public View getView(int position, View view, ViewGroup parent) {
425		final Message message = getItem(position);
426		final boolean isInValidSession = message.isValidInSession();
427		final Conversation conversation = message.getConversation();
428		final Account account = conversation.getAccount();
429		final int type = getItemViewType(position);
430		ViewHolder viewHolder;
431		if (view == null) {
432			viewHolder = new ViewHolder();
433			switch (type) {
434				case SENT:
435					view = activity.getLayoutInflater().inflate(
436							R.layout.message_sent, parent, false);
437					viewHolder.message_box = (LinearLayout) view
438						.findViewById(R.id.message_box);
439					viewHolder.contact_picture = (ImageView) view
440						.findViewById(R.id.message_photo);
441					viewHolder.download_button = (Button) view
442						.findViewById(R.id.download_button);
443					viewHolder.indicator = (ImageView) view
444						.findViewById(R.id.security_indicator);
445					viewHolder.image = (ImageView) view
446						.findViewById(R.id.message_image);
447					viewHolder.messageBody = (TextView) view
448						.findViewById(R.id.message_body);
449					viewHolder.time = (TextView) view
450						.findViewById(R.id.message_time);
451					viewHolder.indicatorReceived = (ImageView) view
452						.findViewById(R.id.indicator_received);
453					break;
454				case RECEIVED:
455					view = activity.getLayoutInflater().inflate(
456							R.layout.message_received, parent, false);
457					viewHolder.message_box = (LinearLayout) view
458						.findViewById(R.id.message_box);
459					viewHolder.contact_picture = (ImageView) view
460						.findViewById(R.id.message_photo);
461					viewHolder.download_button = (Button) view
462						.findViewById(R.id.download_button);
463					viewHolder.indicator = (ImageView) view
464						.findViewById(R.id.security_indicator);
465					viewHolder.image = (ImageView) view
466						.findViewById(R.id.message_image);
467					viewHolder.messageBody = (TextView) view
468						.findViewById(R.id.message_body);
469					viewHolder.time = (TextView) view
470						.findViewById(R.id.message_time);
471					viewHolder.indicatorReceived = (ImageView) view
472						.findViewById(R.id.indicator_received);
473					viewHolder.encryption = (TextView) view.findViewById(R.id.message_encryption);
474					break;
475				case STATUS:
476					view = activity.getLayoutInflater().inflate(R.layout.message_status, parent, false);
477					viewHolder.contact_picture = (ImageView) view.findViewById(R.id.message_photo);
478					viewHolder.status_message = (TextView) view.findViewById(R.id.status_message);
479					break;
480				default:
481					viewHolder = null;
482					break;
483			}
484			view.setTag(viewHolder);
485		} else {
486			viewHolder = (ViewHolder) view.getTag();
487			if (viewHolder == null) {
488				return view;
489			}
490		}
491
492		boolean darkBackground = (type == RECEIVED && (!isInValidSession || !mUseWhiteBackground));
493
494		if (type == STATUS) {
495			if (conversation.getMode() == Conversation.MODE_SINGLE) {
496				viewHolder.contact_picture.setImageBitmap(activity
497						.avatarService().get(conversation.getContact(),
498							activity.getPixel(32)));
499				viewHolder.contact_picture.setAlpha(0.5f);
500				viewHolder.status_message.setText(message.getBody());
501			}
502			return view;
503		} else {
504			loadAvatar(message,viewHolder.contact_picture);
505		}
506
507		viewHolder.contact_picture
508			.setOnClickListener(new OnClickListener() {
509
510				@Override
511				public void onClick(View v) {
512					if (MessageAdapter.this.mOnContactPictureClickedListener != null) {
513						MessageAdapter.this.mOnContactPictureClickedListener
514								.onContactPictureClicked(message);
515					}
516
517				}
518			});
519		viewHolder.contact_picture
520			.setOnLongClickListener(new OnLongClickListener() {
521
522				@Override
523				public boolean onLongClick(View v) {
524					if (MessageAdapter.this.mOnContactPictureLongClickedListener != null) {
525						MessageAdapter.this.mOnContactPictureLongClickedListener
526								.onContactPictureLongClicked(message);
527						return true;
528					} else {
529						return false;
530					}
531				}
532			});
533
534		final Transferable transferable = message.getTransferable();
535		if (transferable != null && transferable.getStatus() != Transferable.STATUS_UPLOADING) {
536			if (transferable.getStatus() == Transferable.STATUS_OFFER) {
537				displayDownloadableMessage(viewHolder,message,activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, message)));
538			} else if (transferable.getStatus() == Transferable.STATUS_OFFER_CHECK_FILESIZE) {
539				displayDownloadableMessage(viewHolder, message, activity.getString(R.string.check_x_filesize, UIHelper.getFileDescriptionString(activity, message)));
540			} else {
541				displayInfoMessage(viewHolder, UIHelper.getMessagePreview(activity, message).first,darkBackground);
542			}
543		} else if (message.getType() == Message.TYPE_IMAGE && message.getEncryption() != Message.ENCRYPTION_PGP && message.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED) {
544			displayImageMessage(viewHolder, message);
545		} else if (message.getType() == Message.TYPE_FILE && message.getEncryption() != Message.ENCRYPTION_PGP && message.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED) {
546			if (message.getFileParams().width > 0) {
547				displayImageMessage(viewHolder,message);
548			} else {
549				displayOpenableMessage(viewHolder, message);
550			}
551		} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
552			if (activity.hasPgp()) {
553				displayInfoMessage(viewHolder,activity.getString(R.string.encrypted_message),darkBackground);
554			} else {
555				displayInfoMessage(viewHolder,activity.getString(R.string.install_openkeychain),darkBackground);
556				if (viewHolder != null) {
557					viewHolder.message_box
558						.setOnClickListener(new OnClickListener() {
559
560							@Override
561							public void onClick(View v) {
562								activity.showInstallPgpDialog();
563							}
564						});
565				}
566			}
567		} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
568			displayDecryptionFailed(viewHolder,darkBackground);
569		} else {
570			if (GeoHelper.isGeoUri(message.getBody())) {
571				displayLocationMessage(viewHolder,message);
572			} else if (message.bodyIsHeart()) {
573				displayHeartMessage(viewHolder, message.getBody().trim());
574			} else if (message.treatAsDownloadable() == Message.Decision.MUST) {
575				displayDownloadableMessage(viewHolder, message, activity.getString(R.string.check_x_filesize, UIHelper.getFileDescriptionString(activity, message)));
576			} else {
577				displayTextMessage(viewHolder, message, darkBackground);
578			}
579		}
580
581		if (type == RECEIVED) {
582			if(isInValidSession) {
583				if (mUseWhiteBackground) {
584					viewHolder.message_box.setBackgroundResource(R.drawable.message_bubble_received_white);
585				} else {
586					viewHolder.message_box.setBackgroundResource(R.drawable.message_bubble_received);
587				}
588				viewHolder.encryption.setVisibility(View.GONE);
589			} else {
590				viewHolder.message_box.setBackgroundResource(R.drawable.message_bubble_received_warning);
591				viewHolder.encryption.setVisibility(View.VISIBLE);
592				viewHolder.encryption.setText(CryptoHelper.encryptionTypeToText(message.getEncryption()));
593			}
594		}
595
596		displayStatus(viewHolder, message, type, darkBackground);
597
598		return view;
599	}
600
601	public void startDownloadable(Message message) {
602		Transferable transferable = message.getTransferable();
603		if (transferable != null) {
604			if (!transferable.start()) {
605				Toast.makeText(activity, R.string.not_connected_try_again,
606						Toast.LENGTH_SHORT).show();
607			}
608		} else if (message.treatAsDownloadable() != Message.Decision.NEVER) {
609			activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message, true);
610		}
611	}
612
613	public void openDownloadable(Message message) {
614		DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
615		if (!file.exists()) {
616			Toast.makeText(activity,R.string.file_deleted,Toast.LENGTH_SHORT).show();
617			return;
618		}
619		Intent openIntent = new Intent(Intent.ACTION_VIEW);
620		String mime = file.getMimeType();
621		if (mime == null) {
622			mime = "*/*";
623		}
624		openIntent.setDataAndType(Uri.fromFile(file), mime);
625		PackageManager manager = activity.getPackageManager();
626		List<ResolveInfo> infos = manager.queryIntentActivities(openIntent, 0);
627		if (infos.size() == 0) {
628			openIntent.setDataAndType(Uri.fromFile(file),"*/*");
629		}
630		try {
631			getContext().startActivity(openIntent);
632			return;
633		}  catch (ActivityNotFoundException e) {
634			//ignored
635		}
636		Toast.makeText(activity,R.string.no_application_found_to_open_file,Toast.LENGTH_SHORT).show();
637	}
638
639	public void showLocation(Message message) {
640		for(Intent intent : GeoHelper.createGeoIntentsFromMessage(message)) {
641			if (intent.resolveActivity(getContext().getPackageManager()) != null) {
642				getContext().startActivity(intent);
643				return;
644			}
645		}
646		Toast.makeText(activity,R.string.no_application_found_to_display_location,Toast.LENGTH_SHORT).show();
647	}
648
649	public void updatePreferences() {
650		this.mIndicateReceived = activity.indicateReceived();
651		this.mUseWhiteBackground = activity.useWhiteBackground();
652	}
653
654	public interface OnContactPictureClicked {
655		void onContactPictureClicked(Message message);
656	}
657
658	public interface OnContactPictureLongClicked {
659		void onContactPictureLongClicked(Message message);
660	}
661
662	private static class ViewHolder {
663
664		protected LinearLayout message_box;
665		protected Button download_button;
666		protected ImageView image;
667		protected ImageView indicator;
668		protected ImageView indicatorReceived;
669		protected TextView time;
670		protected TextView messageBody;
671		protected ImageView contact_picture;
672		protected TextView status_message;
673		protected TextView encryption;
674	}
675
676	class BitmapWorkerTask extends AsyncTask<Message, Void, Bitmap> {
677		private final WeakReference<ImageView> imageViewReference;
678		private Message message = null;
679
680		public BitmapWorkerTask(ImageView imageView) {
681			imageViewReference = new WeakReference<>(imageView);
682		}
683
684		@Override
685		protected Bitmap doInBackground(Message... params) {
686			return activity.avatarService().get(params[0], activity.getPixel(48), isCancelled());
687		}
688
689		@Override
690		protected void onPostExecute(Bitmap bitmap) {
691			if (bitmap != null) {
692				final ImageView imageView = imageViewReference.get();
693				if (imageView != null) {
694					imageView.setImageBitmap(bitmap);
695					imageView.setBackgroundColor(0x00000000);
696				}
697			}
698		}
699	}
700
701	public void loadAvatar(Message message, ImageView imageView) {
702		if (cancelPotentialWork(message, imageView)) {
703			final Bitmap bm = activity.avatarService().get(message, activity.getPixel(48), true);
704			if (bm != null) {
705				imageView.setImageBitmap(bm);
706				imageView.setBackgroundColor(0x00000000);
707			} else {
708				imageView.setBackgroundColor(UIHelper.getColorForName(UIHelper.getMessageDisplayName(message)));
709				imageView.setImageDrawable(null);
710				final BitmapWorkerTask task = new BitmapWorkerTask(imageView);
711				final AsyncDrawable asyncDrawable = new AsyncDrawable(activity.getResources(), null, task);
712				imageView.setImageDrawable(asyncDrawable);
713				try {
714					task.execute(message);
715				} catch (final RejectedExecutionException ignored) {
716				}
717			}
718		}
719	}
720
721	public static boolean cancelPotentialWork(Message message, ImageView imageView) {
722		final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
723
724		if (bitmapWorkerTask != null) {
725			final Message oldMessage = bitmapWorkerTask.message;
726			if (oldMessage == null || message != oldMessage) {
727				bitmapWorkerTask.cancel(true);
728			} else {
729				return false;
730			}
731		}
732		return true;
733	}
734
735	private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
736		if (imageView != null) {
737			final Drawable drawable = imageView.getDrawable();
738			if (drawable instanceof AsyncDrawable) {
739				final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
740				return asyncDrawable.getBitmapWorkerTask();
741			}
742		}
743		return null;
744	}
745
746	static class AsyncDrawable extends BitmapDrawable {
747		private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
748
749		public AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
750			super(res, bitmap);
751			bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
752		}
753
754		public BitmapWorkerTask getBitmapWorkerTask() {
755			return bitmapWorkerTaskReference.get();
756		}
757	}
758}