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.Color;
  10import android.graphics.Typeface;
  11import android.graphics.drawable.BitmapDrawable;
  12import android.graphics.drawable.Drawable;
  13import android.net.Uri;
  14import android.os.AsyncTask;
  15import android.support.annotation.ColorInt;
  16import android.support.text.emoji.EmojiCompat;
  17import android.support.v4.content.ContextCompat;
  18import android.text.Spannable;
  19import android.text.SpannableString;
  20import android.text.SpannableStringBuilder;
  21import android.text.Spanned;
  22import android.text.format.DateUtils;
  23import android.text.style.ForegroundColorSpan;
  24import android.text.style.RelativeSizeSpan;
  25import android.text.style.StyleSpan;
  26import android.text.util.Linkify;
  27import android.util.DisplayMetrics;
  28import android.util.Log;
  29import android.view.ActionMode;
  30import android.view.Menu;
  31import android.view.MenuItem;
  32import android.view.View;
  33import android.view.View.OnClickListener;
  34import android.view.View.OnLongClickListener;
  35import android.view.ViewGroup;
  36import android.widget.ArrayAdapter;
  37import android.widget.Button;
  38import android.widget.ImageView;
  39import android.widget.LinearLayout;
  40import android.widget.RelativeLayout;
  41import android.widget.TextView;
  42import android.widget.Toast;
  43
  44import java.lang.ref.WeakReference;
  45import java.net.URL;
  46import java.util.List;
  47import java.util.Locale;
  48import java.util.concurrent.RejectedExecutionException;
  49import java.util.regex.Matcher;
  50import java.util.regex.Pattern;
  51
  52import eu.siacs.conversations.Config;
  53import eu.siacs.conversations.R;
  54import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  55import eu.siacs.conversations.entities.Account;
  56import eu.siacs.conversations.entities.Conversation;
  57import eu.siacs.conversations.entities.DownloadableFile;
  58import eu.siacs.conversations.entities.Message;
  59import eu.siacs.conversations.entities.Message.FileParams;
  60import eu.siacs.conversations.entities.Transferable;
  61import eu.siacs.conversations.persistance.FileBackend;
  62import eu.siacs.conversations.services.MessageArchiveService;
  63import eu.siacs.conversations.services.NotificationService;
  64import eu.siacs.conversations.ui.ConversationActivity;
  65import eu.siacs.conversations.ui.service.AudioPlayer;
  66import eu.siacs.conversations.ui.text.DividerSpan;
  67import eu.siacs.conversations.ui.text.FixedURLSpan;
  68import eu.siacs.conversations.ui.text.QuoteSpan;
  69import eu.siacs.conversations.ui.widget.ClickableMovementMethod;
  70import eu.siacs.conversations.ui.widget.CopyTextView;
  71import eu.siacs.conversations.ui.widget.ListSelectionManager;
  72import eu.siacs.conversations.utils.CryptoHelper;
  73import eu.siacs.conversations.utils.EmojiWrapper;
  74import eu.siacs.conversations.utils.Emoticons;
  75import eu.siacs.conversations.utils.GeoHelper;
  76import eu.siacs.conversations.utils.Patterns;
  77import eu.siacs.conversations.utils.StylingHelper;
  78import eu.siacs.conversations.utils.UIHelper;
  79import eu.siacs.conversations.utils.XmppUri;
  80import eu.siacs.conversations.xmpp.mam.MamReference;
  81
  82public class MessageAdapter extends ArrayAdapter<Message> implements CopyTextView.CopyHandler {
  83
  84	private static final int SENT = 0;
  85	private static final int RECEIVED = 1;
  86	private static final int STATUS = 2;
  87	private static final int DATE_SEPARATOR = 3;
  88
  89	public static final String DATE_SEPARATOR_BODY = "DATE_SEPARATOR";
  90
  91	private static final Pattern XMPP_PATTERN = Pattern
  92			.compile("xmpp\\:(?:(?:["
  93					+ Patterns.GOOD_IRI_CHAR
  94					+ "\\;\\/\\?\\@\\&\\=\\#\\~\\-\\.\\+\\!\\*\\'\\(\\)\\,\\_])"
  95					+ "|(?:\\%[a-fA-F0-9]{2}))+");
  96
  97	private static final Linkify.TransformFilter WEBURL_TRANSFORM_FILTER = new Linkify.TransformFilter() {
  98		@Override
  99		public String transformUrl(Matcher matcher, String url) {
 100			if (url == null) {
 101				return null;
 102			}
 103			final String lcUrl = url.toLowerCase(Locale.US);
 104			if (lcUrl.startsWith("http://") || lcUrl.startsWith("https://")) {
 105				return url;
 106			} else {
 107				return "http://"+url;
 108			}
 109		}
 110	};
 111	private static final Linkify.MatchFilter WEBURL_MATCH_FILTER = new Linkify.MatchFilter() {
 112		@Override
 113		public boolean acceptMatch(CharSequence cs, int start, int end) {
 114			return start < 1 || (cs.charAt(start-1) != '@' && cs.charAt(start-1) != '.' && !cs.subSequence(Math.max(0,start - 3),start).equals("://"));
 115		}
 116	};
 117
 118	private static final Linkify.MatchFilter XMPPURI_MATCH_FILTER = new Linkify.MatchFilter() {
 119		@Override
 120		public boolean acceptMatch(CharSequence s, int start, int end) {
 121			XmppUri uri = new XmppUri(s.subSequence(start,end).toString());
 122			return uri.isJidValid();
 123		}
 124	};
 125
 126	private final ConversationActivity activity;
 127
 128	private DisplayMetrics metrics;
 129
 130	private OnContactPictureClicked mOnContactPictureClickedListener;
 131	private OnContactPictureLongClicked mOnContactPictureLongClickedListener;
 132
 133	private boolean mIndicateReceived = false;
 134	private boolean mUseGreenBackground = false;
 135
 136	private OnQuoteListener onQuoteListener;
 137
 138	private final ListSelectionManager listSelectionManager = new ListSelectionManager();
 139
 140	private final AudioPlayer audioPlayer;
 141
 142	public MessageAdapter(ConversationActivity activity, List<Message> messages) {
 143		super(activity, 0, messages);
 144		this.audioPlayer = new AudioPlayer(this);
 145		this.activity = activity;
 146		metrics = getContext().getResources().getDisplayMetrics();
 147		updatePreferences();
 148	}
 149
 150	public void setOnContactPictureClicked(OnContactPictureClicked listener) {
 151		this.mOnContactPictureClickedListener = listener;
 152	}
 153
 154	public void setOnContactPictureLongClicked(
 155			OnContactPictureLongClicked listener) {
 156		this.mOnContactPictureLongClickedListener = listener;
 157			}
 158
 159	public void setOnQuoteListener(OnQuoteListener listener) {
 160		this.onQuoteListener = listener;
 161	}
 162
 163	@Override
 164	public int getViewTypeCount() {
 165		return 4;
 166	}
 167
 168	public int getItemViewType(Message message) {
 169		if (message.getType() == Message.TYPE_STATUS) {
 170			if (DATE_SEPARATOR_BODY.equals(message.getBody())) {
 171				return DATE_SEPARATOR;
 172			} else {
 173				return STATUS;
 174			}
 175		} else if (message.getStatus() <= Message.STATUS_RECEIVED) {
 176			return RECEIVED;
 177		}
 178
 179		return SENT;
 180	}
 181
 182	@Override
 183	public int getItemViewType(int position) {
 184		return this.getItemViewType(getItem(position));
 185	}
 186
 187	public int getMessageTextColor(boolean onDark, boolean primary) {
 188		if (onDark) {
 189			return ContextCompat.getColor(activity, primary ? R.color.white : R.color.white70);
 190		} else {
 191			return ContextCompat.getColor(activity, primary ? R.color.black87 : R.color.black54);
 192		}
 193	}
 194
 195	private void displayStatus(ViewHolder viewHolder, Message message, int type, boolean darkBackground) {
 196		String filesize = null;
 197		String info = null;
 198		boolean error = false;
 199		if (viewHolder.indicatorReceived != null) {
 200			viewHolder.indicatorReceived.setVisibility(View.GONE);
 201		}
 202
 203		if (viewHolder.edit_indicator != null) {
 204			if (message.edited()) {
 205				viewHolder.edit_indicator.setVisibility(View.VISIBLE);
 206				viewHolder.edit_indicator.setImageResource(darkBackground ? R.drawable.ic_mode_edit_white_18dp : R.drawable.ic_mode_edit_black_18dp);
 207				viewHolder.edit_indicator.setAlpha(darkBackground ? 0.7f : 0.57f);
 208			} else {
 209				viewHolder.edit_indicator.setVisibility(View.GONE);
 210			}
 211		}
 212		boolean multiReceived = message.getConversation().getMode() == Conversation.MODE_MULTI
 213			&& message.getMergedStatus() <= Message.STATUS_RECEIVED;
 214		if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE || message.getTransferable() != null) {
 215			FileParams params = message.getFileParams();
 216			if (params.size > (1.5 * 1024 * 1024)) {
 217				filesize = Math.round(params.size * 1f/ (1024 * 1024))+ " MiB";
 218			} else if (params.size >= 1024) {
 219				filesize = Math.round(params.size * 1f/ 1024) + " KiB";
 220			} else if (params.size > 0){
 221				filesize = params.size + " B";
 222			}
 223			if (message.getTransferable() != null && message.getTransferable().getStatus() == Transferable.STATUS_FAILED) {
 224				error = true;
 225			}
 226		}
 227		switch (message.getMergedStatus()) {
 228			case Message.STATUS_WAITING:
 229				info = getContext().getString(R.string.waiting);
 230				break;
 231			case Message.STATUS_UNSEND:
 232				Transferable d = message.getTransferable();
 233				if (d!=null) {
 234					info = getContext().getString(R.string.sending_file,d.getProgress());
 235				} else {
 236					info = getContext().getString(R.string.sending);
 237				}
 238				break;
 239			case Message.STATUS_OFFERED:
 240				info = getContext().getString(R.string.offering);
 241				break;
 242			case Message.STATUS_SEND_RECEIVED:
 243				if (mIndicateReceived) {
 244					viewHolder.indicatorReceived.setVisibility(View.VISIBLE);
 245				}
 246				break;
 247			case Message.STATUS_SEND_DISPLAYED:
 248				if (mIndicateReceived) {
 249					viewHolder.indicatorReceived.setVisibility(View.VISIBLE);
 250				}
 251				break;
 252			case Message.STATUS_SEND_FAILED:
 253				info = getContext().getString(R.string.send_failed);
 254				error = true;
 255				break;
 256			default:
 257				if (multiReceived) {
 258					info = UIHelper.getMessageDisplayName(message);
 259				}
 260				break;
 261		}
 262		if (error && type == SENT) {
 263			viewHolder.time.setTextColor(activity.getWarningTextColor());
 264		} else {
 265			viewHolder.time.setTextColor(this.getMessageTextColor(darkBackground,false));
 266		}
 267		if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 268			viewHolder.indicator.setVisibility(View.GONE);
 269		} else {
 270			boolean verified = false;
 271			if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
 272				final FingerprintStatus status = message.getConversation()
 273						.getAccount().getAxolotlService().getFingerprintTrust(
 274								message.getFingerprint());
 275				if (status != null && status.isVerified()) {
 276					verified = true;
 277				}
 278			}
 279			if (verified) {
 280				viewHolder.indicator.setImageResource(darkBackground ? R.drawable.ic_verified_user_white_18dp : R.drawable.ic_verified_user_black_18dp);
 281			} else {
 282				viewHolder.indicator.setImageResource(darkBackground ? R.drawable.ic_lock_white_18dp : R.drawable.ic_lock_black_18dp);
 283			}
 284			if (darkBackground) {
 285				viewHolder.indicator.setAlpha(0.7f);
 286			} else {
 287				viewHolder.indicator.setAlpha(0.57f);
 288			}
 289			viewHolder.indicator.setVisibility(View.VISIBLE);
 290		}
 291
 292		String formatedTime = UIHelper.readableTimeDifferenceFull(getContext(), message.getMergedTimeSent());
 293		if (message.getStatus() <= Message.STATUS_RECEIVED) {
 294			if ((filesize != null) && (info != null)) {
 295				viewHolder.time.setText(formatedTime + " \u00B7 " + filesize +" \u00B7 " + info);
 296			} else if ((filesize == null) && (info != null)) {
 297				viewHolder.time.setText(formatedTime + " \u00B7 " + info);
 298			} else if ((filesize != null) && (info == null)) {
 299				viewHolder.time.setText(formatedTime + " \u00B7 " + filesize);
 300			} else {
 301				viewHolder.time.setText(formatedTime);
 302			}
 303		} else {
 304			if ((filesize != null) && (info != null)) {
 305				viewHolder.time.setText(filesize + " \u00B7 " + info);
 306			} else if ((filesize == null) && (info != null)) {
 307				if (error) {
 308					viewHolder.time.setText(info + " \u00B7 " + formatedTime);
 309				} else {
 310					viewHolder.time.setText(info);
 311				}
 312			} else if ((filesize != null) && (info == null)) {
 313				viewHolder.time.setText(filesize + " \u00B7 " + formatedTime);
 314			} else {
 315				viewHolder.time.setText(formatedTime);
 316			}
 317		}
 318	}
 319
 320	private void displayInfoMessage(ViewHolder viewHolder, String text, boolean darkBackground) {
 321		viewHolder.download_button.setVisibility(View.GONE);
 322		viewHolder.audioPlayer.setVisibility(View.GONE);
 323		viewHolder.image.setVisibility(View.GONE);
 324		viewHolder.messageBody.setVisibility(View.VISIBLE);
 325		viewHolder.messageBody.setText(text);
 326		viewHolder.messageBody.setTextColor(getMessageTextColor(darkBackground, false));
 327		viewHolder.messageBody.setTypeface(null, Typeface.ITALIC);
 328		viewHolder.messageBody.setTextIsSelectable(false);
 329	}
 330
 331	private void displayDecryptionFailed(ViewHolder viewHolder, boolean darkBackground) {
 332		viewHolder.download_button.setVisibility(View.GONE);
 333		viewHolder.image.setVisibility(View.GONE);
 334		viewHolder.audioPlayer.setVisibility(View.GONE);
 335		viewHolder.messageBody.setVisibility(View.VISIBLE);
 336		viewHolder.messageBody.setText(getContext().getString(
 337				R.string.decryption_failed));
 338		viewHolder.messageBody.setTextColor(getMessageTextColor(darkBackground, false));
 339		viewHolder.messageBody.setTypeface(null, Typeface.NORMAL);
 340		viewHolder.messageBody.setTextIsSelectable(false);
 341	}
 342
 343	private void displayEmojiMessage(final ViewHolder viewHolder, final String body) {
 344		viewHolder.download_button.setVisibility(View.GONE);
 345		viewHolder.audioPlayer.setVisibility(View.GONE);
 346		viewHolder.image.setVisibility(View.GONE);
 347		viewHolder.messageBody.setVisibility(View.VISIBLE);
 348		Spannable span = new SpannableString(body);
 349		float size = Emoticons.isEmoji(body) ? 3.0f : 2.0f;
 350		span.setSpan(new RelativeSizeSpan(size), 0, body.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 351		viewHolder.messageBody.setText(EmojiWrapper.transform(span));
 352	}
 353
 354	private int applyQuoteSpan(SpannableStringBuilder body, int start, int end, boolean darkBackground) {
 355		if (start > 1 && !"\n\n".equals(body.subSequence(start - 2, start).toString())) {
 356			body.insert(start++, "\n");
 357			body.setSpan(new DividerSpan(false), start - 2, start, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 358			end++;
 359		}
 360		if (end < body.length() - 1 && !"\n\n".equals(body.subSequence(end, end + 2).toString())) {
 361			body.insert(end, "\n");
 362			body.setSpan(new DividerSpan(false), end, end + 2, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 363		}
 364		int color = darkBackground ? this.getMessageTextColor(darkBackground, false)
 365				: ContextCompat.getColor(activity, R.color.bubble);
 366		DisplayMetrics metrics = getContext().getResources().getDisplayMetrics();
 367		body.setSpan(new QuoteSpan(color, metrics), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 368		return 0;
 369	}
 370
 371	/**
 372	 * Applies QuoteSpan to group of lines which starts with > or » characters.
 373	 * Appends likebreaks and applies DividerSpan to them to show a padding between quote and text.
 374	 */
 375	private boolean handleTextQuotes(SpannableStringBuilder body, boolean darkBackground) {
 376		boolean startsWithQuote = false;
 377		char previous = '\n';
 378		int lineStart = -1;
 379		int lineTextStart = -1;
 380		int quoteStart = -1;
 381		for (int i = 0; i <= body.length(); i++) {
 382			char current = body.length() > i ? body.charAt(i) : '\n';
 383			if (lineStart == -1) {
 384				if (previous == '\n') {
 385					if ((current == '>' && UIHelper.isPositionFollowedByQuoteableCharacter(body,i))
 386							|| current == '\u00bb' && !UIHelper.isPositionFollowedByQuote(body,i)) {
 387						// Line start with quote
 388						lineStart = i;
 389						if (quoteStart == -1) quoteStart = i;
 390						if (i == 0) startsWithQuote = true;
 391					} else if (quoteStart >= 0) {
 392						// Line start without quote, apply spans there
 393						applyQuoteSpan(body, quoteStart, i - 1, darkBackground);
 394						quoteStart = -1;
 395					}
 396				}
 397			} else {
 398				// Remove extra spaces between > and first character in the line
 399				// > character will be removed too
 400				if (current != ' ' && lineTextStart == -1) {
 401					lineTextStart = i;
 402				}
 403				if (current == '\n') {
 404					body.delete(lineStart, lineTextStart);
 405					i -= lineTextStart - lineStart;
 406					if (i == lineStart) {
 407						// Avoid empty lines because span over empty line can be hidden
 408						body.insert(i++, " ");
 409					}
 410					lineStart = -1;
 411					lineTextStart = -1;
 412				}
 413			}
 414			previous = current;
 415		}
 416		if (quoteStart >= 0) {
 417			// Apply spans to finishing open quote
 418			applyQuoteSpan(body, quoteStart, body.length(), darkBackground);
 419		}
 420		return startsWithQuote;
 421	}
 422
 423	private void displayTextMessage(final ViewHolder viewHolder, final Message message, boolean darkBackground, int type) {
 424		viewHolder.download_button.setVisibility(View.GONE);
 425		viewHolder.image.setVisibility(View.GONE);
 426		viewHolder.audioPlayer.setVisibility(View.GONE);
 427		viewHolder.messageBody.setVisibility(View.VISIBLE);
 428
 429		viewHolder.messageBody.setTextColor(this.getMessageTextColor(darkBackground, true));
 430		viewHolder.messageBody.setLinkTextColor(this.getMessageTextColor(darkBackground, true));
 431		viewHolder.messageBody.setHighlightColor(ContextCompat.getColor(activity, darkBackground
 432				? (type == SENT || !mUseGreenBackground ? R.color.black26 : R.color.grey800) : R.color.grey500));
 433		viewHolder.messageBody.setTypeface(null, Typeface.NORMAL);
 434
 435		if (message.getBody() != null) {
 436			final String nick = UIHelper.getMessageDisplayName(message);
 437			SpannableStringBuilder body = message.getMergedBody();
 438			boolean hasMeCommand = message.hasMeCommand();
 439			if (hasMeCommand) {
 440				body = body.replace(0, Message.ME_COMMAND.length(), nick + " ");
 441			}
 442			if (body.length() > Config.MAX_DISPLAY_MESSAGE_CHARS) {
 443				body = new SpannableStringBuilder(body, 0, Config.MAX_DISPLAY_MESSAGE_CHARS);
 444				body.append("\u2026");
 445			}
 446			Message.MergeSeparator[] mergeSeparators = body.getSpans(0, body.length(), Message.MergeSeparator.class);
 447			for (Message.MergeSeparator mergeSeparator : mergeSeparators) {
 448				int start = body.getSpanStart(mergeSeparator);
 449				int end = body.getSpanEnd(mergeSeparator);
 450				body.setSpan(new DividerSpan(true), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 451			}
 452			boolean startsWithQuote = handleTextQuotes(body, darkBackground);
 453			if (message.getType() != Message.TYPE_PRIVATE) {
 454				if (hasMeCommand) {
 455					body.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), 0, nick.length(),
 456							Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 457				}
 458			} else {
 459				String privateMarker;
 460				if (message.getStatus() <= Message.STATUS_RECEIVED) {
 461					privateMarker = activity.getString(R.string.private_message);
 462				} else {
 463					final String to;
 464					if (message.getCounterpart() != null) {
 465						to = message.getCounterpart().getResourcepart();
 466					} else {
 467						to = "";
 468					}
 469					privateMarker = activity.getString(R.string.private_message_to, to);
 470				}
 471				body.insert(0, privateMarker);
 472				int privateMarkerIndex = privateMarker.length();
 473				if (startsWithQuote) {
 474					body.insert(privateMarkerIndex, "\n\n");
 475					body.setSpan(new DividerSpan(false), privateMarkerIndex, privateMarkerIndex + 2,
 476							Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 477				} else {
 478					body.insert(privateMarkerIndex, " ");
 479				}
 480				body.setSpan(new ForegroundColorSpan(getMessageTextColor(darkBackground, false)), 0, privateMarkerIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 481				body.setSpan(new StyleSpan(Typeface.BOLD), 0, privateMarkerIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 482				if (hasMeCommand) {
 483					body.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), privateMarkerIndex + 1,
 484							privateMarkerIndex + 1 + nick.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 485				}
 486			}
 487			if (message.getConversation().getMode() == Conversation.MODE_MULTI && message.getStatus() == Message.STATUS_RECEIVED) {
 488				Pattern pattern = NotificationService.generateNickHighlightPattern(message.getConversation().getMucOptions().getActualNick());
 489				Matcher matcher = pattern.matcher(body);
 490				while(matcher.find()) {
 491					body.setSpan(new StyleSpan(Typeface.BOLD), matcher.start(), matcher.end(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 492				}
 493			}
 494			Matcher matcher = Emoticons.generatePattern(body).matcher(body);
 495			while(matcher.find()) {
 496				if (matcher.start() < matcher.end()) {
 497					body.setSpan(new RelativeSizeSpan(1.2f), matcher.start(), matcher.end(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 498				}
 499			}
 500
 501			StylingHelper.format(body, viewHolder.messageBody.getCurrentTextColor());
 502
 503			Linkify.addLinks(body, XMPP_PATTERN, "xmpp", XMPPURI_MATCH_FILTER, null);
 504			Linkify.addLinks(body, Patterns.AUTOLINK_WEB_URL, "http", WEBURL_MATCH_FILTER, WEBURL_TRANSFORM_FILTER);
 505			Linkify.addLinks(body, GeoHelper.GEO_URI, "geo");
 506			FixedURLSpan.fix(body);
 507			viewHolder.messageBody.setAutoLinkMask(0);
 508			viewHolder.messageBody.setText(EmojiWrapper.transform(body));
 509			viewHolder.messageBody.setTextIsSelectable(true);
 510			viewHolder.messageBody.setMovementMethod(ClickableMovementMethod.getInstance());
 511			listSelectionManager.onUpdate(viewHolder.messageBody, message);
 512		} else {
 513			viewHolder.messageBody.setText("");
 514			viewHolder.messageBody.setTextIsSelectable(false);
 515		}
 516	}
 517
 518	private void displayDownloadableMessage(ViewHolder viewHolder, final Message message, String text) {
 519		viewHolder.image.setVisibility(View.GONE);
 520		viewHolder.messageBody.setVisibility(View.GONE);
 521		viewHolder.audioPlayer.setVisibility(View.GONE);
 522		viewHolder.download_button.setVisibility(View.VISIBLE);
 523		viewHolder.download_button.setText(text);
 524		viewHolder.download_button.setOnClickListener(new OnClickListener() {
 525
 526			@Override
 527			public void onClick(View v) {
 528				activity.startDownloadable(message);
 529			}
 530		});
 531	}
 532
 533	private void displayOpenableMessage(ViewHolder viewHolder,final Message message) {
 534		viewHolder.image.setVisibility(View.GONE);
 535		viewHolder.messageBody.setVisibility(View.GONE);
 536		viewHolder.audioPlayer.setVisibility(View.GONE);
 537		viewHolder.download_button.setVisibility(View.VISIBLE);
 538		viewHolder.download_button.setText(activity.getString(R.string.open_x_file, UIHelper.getFileDescriptionString(activity, message)));
 539		viewHolder.download_button.setOnClickListener(new OnClickListener() {
 540
 541			@Override
 542			public void onClick(View v) {
 543				openDownloadable(message);
 544			}
 545		});
 546	}
 547
 548	private void displayLocationMessage(ViewHolder viewHolder, final Message message) {
 549		viewHolder.image.setVisibility(View.GONE);
 550		viewHolder.messageBody.setVisibility(View.GONE);
 551		viewHolder.audioPlayer.setVisibility(View.GONE);
 552		viewHolder.download_button.setVisibility(View.VISIBLE);
 553		viewHolder.download_button.setText(R.string.show_location);
 554		viewHolder.download_button.setOnClickListener(new OnClickListener() {
 555
 556			@Override
 557			public void onClick(View v) {
 558				showLocation(message);
 559			}
 560		});
 561	}
 562
 563	private void displayAudioMessage(ViewHolder viewHolder, Message message, boolean darkBackground) {
 564		viewHolder.image.setVisibility(View.GONE);
 565		viewHolder.messageBody.setVisibility(View.GONE);
 566		viewHolder.download_button.setVisibility(View.GONE);
 567		final RelativeLayout audioPlayer = viewHolder.audioPlayer;
 568		audioPlayer.setVisibility(View.VISIBLE);
 569		AudioPlayer.ViewHolder.get(audioPlayer).setDarkBackground(darkBackground);
 570		this.audioPlayer.init(audioPlayer, message);
 571	}
 572
 573
 574	private void displayImageMessage(ViewHolder viewHolder, final Message message) {
 575		viewHolder.download_button.setVisibility(View.GONE);
 576		viewHolder.messageBody.setVisibility(View.GONE);
 577		viewHolder.audioPlayer.setVisibility(View.GONE);
 578		viewHolder.image.setVisibility(View.VISIBLE);
 579		FileParams params = message.getFileParams();
 580		double target = metrics.density * 288;
 581		int scaledW;
 582		int scaledH;
 583		if (Math.max(params.height, params.width) * metrics.density <= target) {
 584			scaledW = (int) (params.width * metrics.density);
 585			scaledH = (int) (params.height * metrics.density);
 586		} else if (Math.max(params.height,params.width) <= target) {
 587			scaledW = params.width;
 588			scaledH = params.height;
 589		} else if (params.width <= params.height) {
 590			scaledW = (int) (params.width / ((double) params.height / target));
 591			scaledH = (int) target;
 592		} else {
 593			scaledW = (int) target;
 594			scaledH = (int) (params.height / ((double) params.width / target));
 595		}
 596		LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(scaledW, scaledH);
 597		layoutParams.setMargins(0, (int) (metrics.density * 4), 0, (int) (metrics.density * 4));
 598		viewHolder.image.setLayoutParams(layoutParams);
 599		activity.loadBitmap(message, viewHolder.image);
 600		viewHolder.image.setOnClickListener(new OnClickListener() {
 601
 602			@Override
 603			public void onClick(View v) {
 604				openDownloadable(message);
 605			}
 606		});
 607	}
 608
 609	private void loadMoreMessages(Conversation conversation) {
 610		conversation.setLastClearHistory(0,null);
 611		activity.xmppConnectionService.updateConversation(conversation);
 612		conversation.setHasMessagesLeftOnServer(true);
 613		conversation.setFirstMamReference(null);
 614		long timestamp = conversation.getLastMessageTransmitted().getTimestamp();
 615		if (timestamp == 0) {
 616			timestamp = System.currentTimeMillis();
 617		}
 618		conversation.messagesLoaded.set(true);
 619		MessageArchiveService.Query query = activity.xmppConnectionService.getMessageArchiveService().query(conversation, new MamReference(0), timestamp, false);
 620		if (query != null) {
 621			Toast.makeText(activity, R.string.fetching_history_from_server, Toast.LENGTH_LONG).show();
 622		} else {
 623			Toast.makeText(activity,R.string.not_fetching_history_retention_period, Toast.LENGTH_SHORT).show();
 624		}
 625	}
 626
 627	@Override
 628	public View getView(int position, View view, ViewGroup parent) {
 629		final Message message = getItem(position);
 630		final boolean omemoEncryption = message.getEncryption() == Message.ENCRYPTION_AXOLOTL;
 631		final boolean isInValidSession = message.isValidInSession() && (!omemoEncryption || message.isTrusted());
 632		final Conversation conversation = message.getConversation();
 633		final Account account = conversation.getAccount();
 634		final int type = getItemViewType(position);
 635		ViewHolder viewHolder;
 636		if (view == null) {
 637			viewHolder = new ViewHolder();
 638			switch (type) {
 639				case DATE_SEPARATOR:
 640					view = activity.getLayoutInflater().inflate(R.layout.message_date_bubble, parent, false);
 641					viewHolder.status_message = view.findViewById(R.id.message_body);
 642					viewHolder.message_box = view.findViewById(R.id.message_box);
 643					break;
 644				case SENT:
 645					view = activity.getLayoutInflater().inflate(R.layout.message_sent, parent, false);
 646					viewHolder.message_box = view.findViewById(R.id.message_box);
 647					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 648					viewHolder.download_button = view.findViewById(R.id.download_button);
 649					viewHolder.indicator = view.findViewById(R.id.security_indicator);
 650					viewHolder.edit_indicator = view.findViewById(R.id.edit_indicator);
 651					viewHolder.image = view.findViewById(R.id.message_image);
 652					viewHolder.messageBody = view.findViewById(R.id.message_body);
 653					viewHolder.time = view.findViewById(R.id.message_time);
 654					viewHolder.indicatorReceived = view.findViewById(R.id.indicator_received);
 655					viewHolder.audioPlayer = view.findViewById(R.id.audio_player);
 656					break;
 657				case RECEIVED:
 658					view = activity.getLayoutInflater().inflate(R.layout.message_received, parent, false);
 659					viewHolder.message_box = view.findViewById(R.id.message_box);
 660					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 661					viewHolder.download_button = view.findViewById(R.id.download_button);
 662					viewHolder.indicator = view.findViewById(R.id.security_indicator);
 663					viewHolder.edit_indicator = view.findViewById(R.id.edit_indicator);
 664					viewHolder.image = view.findViewById(R.id.message_image);
 665					viewHolder.messageBody = view.findViewById(R.id.message_body);
 666					viewHolder.time = view.findViewById(R.id.message_time);
 667					viewHolder.indicatorReceived = view.findViewById(R.id.indicator_received);
 668					viewHolder.encryption = view.findViewById(R.id.message_encryption);
 669					viewHolder.audioPlayer = view.findViewById(R.id.audio_player);
 670					break;
 671				case STATUS:
 672					view = activity.getLayoutInflater().inflate(R.layout.message_status, parent, false);
 673					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 674					viewHolder.status_message = view.findViewById(R.id.status_message);
 675					viewHolder.load_more_messages = view.findViewById(R.id.load_more_messages);
 676					break;
 677				default:
 678					throw new AssertionError("Unknown view type");
 679			}
 680			if (viewHolder.messageBody != null) {
 681				listSelectionManager.onCreate(viewHolder.messageBody,
 682						new MessageBodyActionModeCallback(viewHolder.messageBody));
 683				viewHolder.messageBody.setCopyHandler(this);
 684			}
 685			view.setTag(viewHolder);
 686		} else {
 687			viewHolder = (ViewHolder) view.getTag();
 688			if (viewHolder == null) {
 689				return view;
 690			}
 691		}
 692
 693		boolean darkBackground = type == RECEIVED && (!isInValidSession || mUseGreenBackground) || activity.isDarkTheme();
 694
 695		if (type == DATE_SEPARATOR) {
 696			if (UIHelper.today(message.getTimeSent())) {
 697				viewHolder.status_message.setText(R.string.today);
 698			} else if (UIHelper.yesterday(message.getTimeSent())) {
 699				viewHolder.status_message.setText(R.string.yesterday);
 700			} else {
 701				viewHolder.status_message.setText(DateUtils.formatDateTime(activity,message.getTimeSent(),DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_SHOW_YEAR));
 702			}
 703			viewHolder.message_box.setBackgroundResource(activity.isDarkTheme() ? R.drawable.date_bubble_grey : R.drawable.date_bubble_white);
 704			viewHolder.status_message.setTextColor(activity.getSecondaryTextColor());
 705			return view;
 706		} else if (type == STATUS) {
 707			if ("LOAD_MORE".equals(message.getBody())) {
 708				viewHolder.status_message.setVisibility(View.GONE);
 709				viewHolder.contact_picture.setVisibility(View.GONE);
 710				viewHolder.load_more_messages.setVisibility(View.VISIBLE);
 711				viewHolder.load_more_messages.setOnClickListener(new OnClickListener() {
 712					@Override
 713					public void onClick(View v) {
 714						loadMoreMessages(message.getConversation());
 715					}
 716				});
 717			} else {
 718				viewHolder.status_message.setVisibility(View.VISIBLE);
 719				viewHolder.load_more_messages.setVisibility(View.GONE);
 720				viewHolder.status_message.setText(message.getBody());
 721				boolean showAvatar;
 722				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 723					showAvatar = true;
 724					loadAvatar(message,viewHolder.contact_picture,activity.getPixel(32));
 725				} else if (message.getCounterpart() != null || message.getTrueCounterpart() != null || (message.getCounterparts() != null && message.getCounterparts().size() > 0)) {
 726					showAvatar = true;
 727					loadAvatar(message,viewHolder.contact_picture,activity.getPixel(32));
 728				} else {
 729					showAvatar = false;
 730				}
 731				if (showAvatar) {
 732					viewHolder.contact_picture.setAlpha(0.5f);
 733					viewHolder.contact_picture.setVisibility(View.VISIBLE);
 734				} else {
 735					viewHolder.contact_picture.setVisibility(View.GONE);
 736				}
 737			}
 738			return view;
 739		} else {
 740			loadAvatar(message, viewHolder.contact_picture,activity.getPixel(48));
 741		}
 742
 743		viewHolder.contact_picture
 744			.setOnClickListener(new OnClickListener() {
 745
 746				@Override
 747				public void onClick(View v) {
 748					if (MessageAdapter.this.mOnContactPictureClickedListener != null) {
 749						MessageAdapter.this.mOnContactPictureClickedListener
 750								.onContactPictureClicked(message);
 751					}
 752
 753				}
 754			});
 755		viewHolder.contact_picture
 756			.setOnLongClickListener(new OnLongClickListener() {
 757
 758				@Override
 759				public boolean onLongClick(View v) {
 760					if (MessageAdapter.this.mOnContactPictureLongClickedListener != null) {
 761						MessageAdapter.this.mOnContactPictureLongClickedListener
 762								.onContactPictureLongClicked(message);
 763						return true;
 764					} else {
 765						return false;
 766					}
 767				}
 768			});
 769
 770		final Transferable transferable = message.getTransferable();
 771		if (transferable != null && transferable.getStatus() != Transferable.STATUS_UPLOADING) {
 772			if (transferable.getStatus() == Transferable.STATUS_OFFER) {
 773				displayDownloadableMessage(viewHolder,message,activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, message)));
 774			} else if (transferable.getStatus() == Transferable.STATUS_OFFER_CHECK_FILESIZE) {
 775				displayDownloadableMessage(viewHolder, message, activity.getString(R.string.check_x_filesize, UIHelper.getFileDescriptionString(activity, message)));
 776			} else {
 777				displayInfoMessage(viewHolder, UIHelper.getMessagePreview(activity, message).first,darkBackground);
 778			}
 779		} else if (message.getType() == Message.TYPE_IMAGE && message.getEncryption() != Message.ENCRYPTION_PGP && message.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED) {
 780			displayImageMessage(viewHolder, message);
 781		} else if (message.getType() == Message.TYPE_FILE && message.getEncryption() != Message.ENCRYPTION_PGP && message.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED) {
 782			if (message.getFileParams().width > 0 && message.getFileParams().height > 0) {
 783				displayImageMessage(viewHolder, message);
 784			} else if (message.getFileParams().runtime > 0) {
 785				displayAudioMessage(viewHolder, message, darkBackground);
 786			} else {
 787				displayOpenableMessage(viewHolder, message);
 788			}
 789		} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 790			if (account.isPgpDecryptionServiceConnected()) {
 791				if (!account.hasPendingPgpIntent(conversation)) {
 792					displayInfoMessage(viewHolder, activity.getString(R.string.message_decrypting), darkBackground);
 793				} else {
 794					displayInfoMessage(viewHolder, activity.getString(R.string.pgp_message), darkBackground);
 795				}
 796			} else {
 797				displayInfoMessage(viewHolder,activity.getString(R.string.install_openkeychain),darkBackground);
 798				viewHolder.message_box.setOnClickListener(new OnClickListener() {
 799
 800							@Override
 801							public void onClick(View v) {
 802								activity.showInstallPgpDialog();
 803							}
 804						});
 805			}
 806		} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
 807			displayDecryptionFailed(viewHolder,darkBackground);
 808		} else {
 809			if (message.isGeoUri()) {
 810				displayLocationMessage(viewHolder,message);
 811			} else if (message.bodyIsOnlyEmojis() && message.getType() != Message.TYPE_PRIVATE) {
 812				displayEmojiMessage(viewHolder, message.getBody().trim());
 813			} else if (message.treatAsDownloadable()) {
 814				try {
 815					URL url = new URL(message.getBody());
 816					displayDownloadableMessage(viewHolder,
 817							message,
 818							activity.getString(R.string.check_x_filesize_on_host,
 819									UIHelper.getFileDescriptionString(activity, message),
 820									url.getHost()));
 821				} catch (Exception e) {
 822					displayDownloadableMessage(viewHolder,
 823							message,
 824							activity.getString(R.string.check_x_filesize,
 825									UIHelper.getFileDescriptionString(activity, message)));
 826				}
 827			} else {
 828				displayTextMessage(viewHolder, message, darkBackground, type);
 829			}
 830		}
 831
 832		if (type == RECEIVED) {
 833			if(isInValidSession) {
 834				int bubble;
 835				if (!mUseGreenBackground) {
 836					bubble = activity.getThemeResource(R.attr.message_bubble_received_monochrome, R.drawable.message_bubble_received_white);
 837				} else {
 838					bubble = activity.getThemeResource(R.attr.message_bubble_received_green, R.drawable.message_bubble_received);
 839				}
 840				viewHolder.message_box.setBackgroundResource(bubble);
 841				viewHolder.encryption.setVisibility(View.GONE);
 842			} else {
 843				viewHolder.message_box.setBackgroundResource(R.drawable.message_bubble_received_warning);
 844				viewHolder.encryption.setVisibility(View.VISIBLE);
 845				if (omemoEncryption && !message.isTrusted()) {
 846					viewHolder.encryption.setText(R.string.not_trusted);
 847				} else {
 848					viewHolder.encryption.setText(CryptoHelper.encryptionTypeToText(message.getEncryption()));
 849				}
 850			}
 851		}
 852
 853		displayStatus(viewHolder, message, type, darkBackground);
 854
 855		return view;
 856	}
 857
 858	@Override
 859	public void notifyDataSetChanged() {
 860		listSelectionManager.onBeforeNotifyDataSetChanged();
 861		super.notifyDataSetChanged();
 862		listSelectionManager.onAfterNotifyDataSetChanged();
 863	}
 864
 865	private String transformText(CharSequence text, int start, int end, boolean forCopy) {
 866		SpannableStringBuilder builder = new SpannableStringBuilder(text);
 867		Object copySpan = new Object();
 868		builder.setSpan(copySpan, start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 869		DividerSpan[] dividerSpans = builder.getSpans(0, builder.length(), DividerSpan.class);
 870		for (DividerSpan dividerSpan : dividerSpans) {
 871			builder.replace(builder.getSpanStart(dividerSpan), builder.getSpanEnd(dividerSpan),
 872					dividerSpan.isLarge() ? "\n\n" : "\n");
 873		}
 874		start = builder.getSpanStart(copySpan);
 875		end = builder.getSpanEnd(copySpan);
 876		if (start == -1 || end == -1) return "";
 877		builder = new SpannableStringBuilder(builder, start, end);
 878		if (forCopy) {
 879			QuoteSpan[] quoteSpans = builder.getSpans(0, builder.length(), QuoteSpan.class);
 880			for (QuoteSpan quoteSpan : quoteSpans) {
 881				builder.insert(builder.getSpanStart(quoteSpan), "> ");
 882			}
 883		}
 884		return builder.toString();
 885	}
 886
 887	@Override
 888	public String transformTextForCopy(CharSequence text, int start, int end) {
 889		if (text instanceof Spanned) {
 890			return transformText(text, start, end, true);
 891		} else {
 892			return text.toString().substring(start, end);
 893		}
 894	}
 895
 896	public FileBackend getFileBackend() {
 897		return activity.xmppConnectionService.getFileBackend();
 898	}
 899
 900	public void stopAudioPlayer() {
 901		audioPlayer.stop();
 902	}
 903
 904	public interface OnQuoteListener {
 905		public void onQuote(String text);
 906	}
 907
 908	private class MessageBodyActionModeCallback implements ActionMode.Callback {
 909
 910		private final TextView textView;
 911
 912		public MessageBodyActionModeCallback(TextView textView) {
 913			this.textView = textView;
 914		}
 915
 916		@Override
 917		public boolean onCreateActionMode(ActionMode mode, Menu menu) {
 918			if (onQuoteListener != null) {
 919				int quoteResId = activity.getThemeResource(R.attr.icon_quote, R.drawable.ic_action_reply);
 920				// 3rd item is placed after "copy" item
 921				menu.add(0, android.R.id.button1, 3, R.string.quote).setIcon(quoteResId)
 922						.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
 923			}
 924			return false;
 925		}
 926
 927		@Override
 928		public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
 929			return false;
 930		}
 931
 932		@Override
 933		public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
 934			if (item.getItemId() == android.R.id.button1) {
 935				int start = textView.getSelectionStart();
 936				int end = textView.getSelectionEnd();
 937				if (end > start) {
 938					String text = transformText(textView.getText(), start, end, false);
 939					if (onQuoteListener != null) {
 940						onQuoteListener.onQuote(text);
 941					}
 942					mode.finish();
 943				}
 944				return true;
 945			}
 946			return false;
 947		}
 948
 949		@Override
 950		public void onDestroyActionMode(ActionMode mode) {}
 951	}
 952
 953	public void openDownloadable(Message message) {
 954		DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
 955		if (!file.exists()) {
 956			Toast.makeText(activity,R.string.file_deleted,Toast.LENGTH_SHORT).show();
 957			return;
 958		}
 959		Intent openIntent = new Intent(Intent.ACTION_VIEW);
 960		String mime = file.getMimeType();
 961		if (mime == null) {
 962			mime = "*/*";
 963		}
 964		Uri uri;
 965		try {
 966			uri = FileBackend.getUriForFile(activity, file);
 967		} catch (SecurityException e) {
 968			Log.d(Config.LOGTAG,"No permission to access "+file.getAbsolutePath(),e);
 969			Toast.makeText(activity, activity.getString(R.string.no_permission_to_access_x, file.getAbsolutePath()), Toast.LENGTH_SHORT).show();
 970			return;
 971		}
 972		openIntent.setDataAndType(uri, mime);
 973		openIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
 974		PackageManager manager = activity.getPackageManager();
 975		List<ResolveInfo> info = manager.queryIntentActivities(openIntent, 0);
 976		if (info.size() == 0) {
 977			openIntent.setDataAndType(uri,"*/*");
 978		}
 979		try {
 980			getContext().startActivity(openIntent);
 981		}  catch (ActivityNotFoundException e) {
 982			Toast.makeText(activity,R.string.no_application_found_to_open_file,Toast.LENGTH_SHORT).show();
 983		}
 984	}
 985
 986	public void showLocation(Message message) {
 987		for(Intent intent : GeoHelper.createGeoIntentsFromMessage(message)) {
 988			if (intent.resolveActivity(getContext().getPackageManager()) != null) {
 989				getContext().startActivity(intent);
 990				return;
 991			}
 992		}
 993		Toast.makeText(activity,R.string.no_application_found_to_display_location,Toast.LENGTH_SHORT).show();
 994	}
 995
 996	public void updatePreferences() {
 997		this.mIndicateReceived = activity.indicateReceived();
 998		this.mUseGreenBackground = activity.useGreenBackground();
 999	}
1000
1001	public TextView getMessageBody(View view) {
1002		final Object tag = view.getTag();
1003		if (tag instanceof ViewHolder) {
1004			final ViewHolder viewHolder = (ViewHolder) tag;
1005			return viewHolder.messageBody;
1006		}
1007		return null;
1008	}
1009
1010	public interface OnContactPictureClicked {
1011		void onContactPictureClicked(Message message);
1012	}
1013
1014	public interface OnContactPictureLongClicked {
1015		void onContactPictureLongClicked(Message message);
1016	}
1017
1018	private static class ViewHolder {
1019
1020		protected LinearLayout message_box;
1021		protected Button download_button;
1022		protected ImageView image;
1023		protected ImageView indicator;
1024		protected ImageView indicatorReceived;
1025		protected TextView time;
1026		protected CopyTextView messageBody;
1027		protected ImageView contact_picture;
1028		protected TextView status_message;
1029		protected TextView encryption;
1030		public Button load_more_messages;
1031		public ImageView edit_indicator;
1032		public RelativeLayout audioPlayer;
1033	}
1034
1035	class BitmapWorkerTask extends AsyncTask<Message, Void, Bitmap> {
1036		private final WeakReference<ImageView> imageViewReference;
1037		private Message message = null;
1038		private final int size;
1039
1040		public BitmapWorkerTask(ImageView imageView, int size) {
1041			imageViewReference = new WeakReference<>(imageView);
1042			this.size = size;
1043		}
1044
1045		@Override
1046		protected Bitmap doInBackground(Message... params) {
1047			return activity.avatarService().get(params[0], size, isCancelled());
1048		}
1049
1050		@Override
1051		protected void onPostExecute(Bitmap bitmap) {
1052			if (bitmap != null && !isCancelled()) {
1053				final ImageView imageView = imageViewReference.get();
1054				if (imageView != null) {
1055					imageView.setImageBitmap(bitmap);
1056					imageView.setBackgroundColor(0x00000000);
1057				}
1058			}
1059		}
1060	}
1061
1062	public void loadAvatar(Message message, ImageView imageView, int size) {
1063		if (cancelPotentialWork(message, imageView)) {
1064			final Bitmap bm = activity.avatarService().get(message, size, true);
1065			if (bm != null) {
1066				cancelPotentialWork(message, imageView);
1067				imageView.setImageBitmap(bm);
1068				imageView.setBackgroundColor(Color.TRANSPARENT);
1069			} else {
1070				@ColorInt int bg;
1071				if (message.getType() == Message.TYPE_STATUS && message.getCounterparts() != null && message.getCounterparts().size() > 1) {
1072					bg = Color.TRANSPARENT;
1073				} else {
1074					bg = UIHelper.getColorForName(UIHelper.getMessageDisplayName(message));
1075				}
1076				imageView.setBackgroundColor(bg);
1077				imageView.setImageDrawable(null);
1078				final BitmapWorkerTask task = new BitmapWorkerTask(imageView, size);
1079				final AsyncDrawable asyncDrawable = new AsyncDrawable(activity.getResources(), null, task);
1080				imageView.setImageDrawable(asyncDrawable);
1081				try {
1082					task.execute(message);
1083				} catch (final RejectedExecutionException ignored) {
1084				}
1085			}
1086		}
1087	}
1088
1089	public static boolean cancelPotentialWork(Message message, ImageView imageView) {
1090		final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
1091
1092		if (bitmapWorkerTask != null) {
1093			final Message oldMessage = bitmapWorkerTask.message;
1094			if (oldMessage == null || message != oldMessage) {
1095				bitmapWorkerTask.cancel(true);
1096			} else {
1097				return false;
1098			}
1099		}
1100		return true;
1101	}
1102
1103	private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
1104		if (imageView != null) {
1105			final Drawable drawable = imageView.getDrawable();
1106			if (drawable instanceof AsyncDrawable) {
1107				final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
1108				return asyncDrawable.getBitmapWorkerTask();
1109			}
1110		}
1111		return null;
1112	}
1113
1114	static class AsyncDrawable extends BitmapDrawable {
1115		private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
1116
1117		public AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
1118			super(res, bitmap);
1119			bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
1120		}
1121
1122		public BitmapWorkerTask getBitmapWorkerTask() {
1123			return bitmapWorkerTaskReference.get();
1124		}
1125	}
1126}