1package eu.siacs.conversations.ui.adapter;
   2
   3import android.content.ActivityNotFoundException;
   4import android.content.Intent;
   5import android.content.SharedPreferences;
   6import android.content.pm.PackageManager;
   7import android.content.pm.ResolveInfo;
   8import android.content.res.Resources;
   9import android.graphics.Bitmap;
  10import android.graphics.Color;
  11import android.graphics.Typeface;
  12import android.graphics.drawable.BitmapDrawable;
  13import android.graphics.drawable.Drawable;
  14import android.net.Uri;
  15import android.os.AsyncTask;
  16import android.preference.PreferenceManager;
  17import android.support.annotation.ColorInt;
  18import android.support.v4.content.ContextCompat;
  19import android.text.Spannable;
  20import android.text.SpannableString;
  21import android.text.SpannableStringBuilder;
  22import android.text.Spanned;
  23import android.text.format.DateUtils;
  24import android.text.style.ForegroundColorSpan;
  25import android.text.style.RelativeSizeSpan;
  26import android.text.style.StyleSpan;
  27import android.text.util.Linkify;
  28import android.util.DisplayMetrics;
  29import android.util.Log;
  30import android.view.ActionMode;
  31import android.view.Menu;
  32import android.view.MenuItem;
  33import android.view.View;
  34import android.view.View.OnClickListener;
  35import android.view.View.OnLongClickListener;
  36import android.view.ViewGroup;
  37import android.view.WindowManager;
  38import android.widget.ArrayAdapter;
  39import android.widget.Button;
  40import android.widget.ImageView;
  41import android.widget.LinearLayout;
  42import android.widget.RelativeLayout;
  43import android.widget.TextView;
  44import android.widget.Toast;
  45
  46import java.lang.ref.WeakReference;
  47import java.net.URL;
  48import java.util.List;
  49import java.util.Locale;
  50import java.util.concurrent.RejectedExecutionException;
  51import java.util.regex.Matcher;
  52import java.util.regex.Pattern;
  53
  54import eu.siacs.conversations.Config;
  55import eu.siacs.conversations.R;
  56import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  57import eu.siacs.conversations.entities.Account;
  58import eu.siacs.conversations.entities.Conversation;
  59import eu.siacs.conversations.entities.DownloadableFile;
  60import eu.siacs.conversations.entities.Message;
  61import eu.siacs.conversations.entities.Message.FileParams;
  62import eu.siacs.conversations.entities.Transferable;
  63import eu.siacs.conversations.persistance.FileBackend;
  64import eu.siacs.conversations.services.MessageArchiveService;
  65import eu.siacs.conversations.services.NotificationService;
  66import eu.siacs.conversations.ui.XmppActivity;
  67import eu.siacs.conversations.ui.service.AudioPlayer;
  68import eu.siacs.conversations.ui.text.DividerSpan;
  69import eu.siacs.conversations.ui.text.FixedURLSpan;
  70import eu.siacs.conversations.ui.text.QuoteSpan;
  71import eu.siacs.conversations.ui.widget.ClickableMovementMethod;
  72import eu.siacs.conversations.ui.widget.CopyTextView;
  73import eu.siacs.conversations.ui.widget.ListSelectionManager;
  74import eu.siacs.conversations.utils.CryptoHelper;
  75import eu.siacs.conversations.utils.EmojiWrapper;
  76import eu.siacs.conversations.utils.Emoticons;
  77import eu.siacs.conversations.utils.GeoHelper;
  78import eu.siacs.conversations.utils.Patterns;
  79import eu.siacs.conversations.utils.StylingHelper;
  80import eu.siacs.conversations.utils.UIHelper;
  81import eu.siacs.conversations.utils.XmppUri;
  82import eu.siacs.conversations.xmpp.mam.MamReference;
  83
  84public class MessageAdapter extends ArrayAdapter<Message> implements CopyTextView.CopyHandler {
  85
  86	private static final int SENT = 0;
  87	private static final int RECEIVED = 1;
  88	private static final int STATUS = 2;
  89	private static final int DATE_SEPARATOR = 3;
  90
  91	public static final String DATE_SEPARATOR_BODY = "DATE_SEPARATOR";
  92
  93	private static final Pattern XMPP_PATTERN = Pattern
  94			.compile("xmpp\\:(?:(?:["
  95					+ Patterns.GOOD_IRI_CHAR
  96					+ "\\;\\/\\?\\@\\&\\=\\#\\~\\-\\.\\+\\!\\*\\'\\(\\)\\,\\_])"
  97					+ "|(?:\\%[a-fA-F0-9]{2}))+");
  98
  99	private static final Linkify.TransformFilter WEBURL_TRANSFORM_FILTER = new Linkify.TransformFilter() {
 100		@Override
 101		public String transformUrl(Matcher matcher, String url) {
 102			if (url == null) {
 103				return null;
 104			}
 105			final String lcUrl = url.toLowerCase(Locale.US);
 106			if (lcUrl.startsWith("http://") || lcUrl.startsWith("https://")) {
 107				return url;
 108			} else {
 109				return "http://"+url;
 110			}
 111		}
 112	};
 113	private static final Linkify.MatchFilter WEBURL_MATCH_FILTER = new Linkify.MatchFilter() {
 114		@Override
 115		public boolean acceptMatch(CharSequence cs, int start, int end) {
 116			return start < 1 || (cs.charAt(start-1) != '@' && cs.charAt(start-1) != '.' && !cs.subSequence(Math.max(0,start - 3),start).equals("://"));
 117		}
 118	};
 119
 120	private static final Linkify.MatchFilter XMPPURI_MATCH_FILTER = new Linkify.MatchFilter() {
 121		@Override
 122		public boolean acceptMatch(CharSequence s, int start, int end) {
 123			XmppUri uri = new XmppUri(s.subSequence(start,end).toString());
 124			return uri.isJidValid();
 125		}
 126	};
 127
 128	private final XmppActivity activity;
 129
 130	private DisplayMetrics metrics;
 131
 132	private OnContactPictureClicked mOnContactPictureClickedListener;
 133	private OnContactPictureLongClicked mOnContactPictureLongClickedListener;
 134
 135	private boolean mIndicateReceived = false;
 136	private boolean mUseGreenBackground = false;
 137
 138	private OnQuoteListener onQuoteListener;
 139
 140	private final ListSelectionManager listSelectionManager = new ListSelectionManager();
 141
 142	private final AudioPlayer audioPlayer;
 143
 144	public MessageAdapter(XmppActivity activity, List<Message> messages) {
 145		super(activity, 0, messages);
 146		this.audioPlayer = new AudioPlayer(this);
 147		this.activity = activity;
 148		metrics = getContext().getResources().getDisplayMetrics();
 149		updatePreferences();
 150	}
 151
 152	public void flagScreenOn() {
 153		activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
 154	}
 155
 156	public void flagScreenOff() {
 157		activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
 158	}
 159
 160	public void setOnContactPictureClicked(OnContactPictureClicked listener) {
 161		this.mOnContactPictureClickedListener = listener;
 162	}
 163
 164	public void setOnContactPictureLongClicked(
 165			OnContactPictureLongClicked listener) {
 166		this.mOnContactPictureLongClickedListener = listener;
 167			}
 168
 169	public void setOnQuoteListener(OnQuoteListener listener) {
 170		this.onQuoteListener = listener;
 171	}
 172
 173	@Override
 174	public int getViewTypeCount() {
 175		return 4;
 176	}
 177
 178	public int getItemViewType(Message message) {
 179		if (message.getType() == Message.TYPE_STATUS) {
 180			if (DATE_SEPARATOR_BODY.equals(message.getBody())) {
 181				return DATE_SEPARATOR;
 182			} else {
 183				return STATUS;
 184			}
 185		} else if (message.getStatus() <= Message.STATUS_RECEIVED) {
 186			return RECEIVED;
 187		}
 188
 189		return SENT;
 190	}
 191
 192	@Override
 193	public int getItemViewType(int position) {
 194		return this.getItemViewType(getItem(position));
 195	}
 196
 197	public int getMessageTextColor(boolean onDark, boolean primary) {
 198		if (onDark) {
 199			return ContextCompat.getColor(activity, primary ? R.color.white : R.color.white70);
 200		} else {
 201			return ContextCompat.getColor(activity, primary ? R.color.black87 : R.color.black54);
 202		}
 203	}
 204
 205	private void displayStatus(ViewHolder viewHolder, Message message, int type, boolean darkBackground) {
 206		String filesize = null;
 207		String info = null;
 208		boolean error = false;
 209		if (viewHolder.indicatorReceived != null) {
 210			viewHolder.indicatorReceived.setVisibility(View.GONE);
 211		}
 212
 213		if (viewHolder.edit_indicator != null) {
 214			if (message.edited()) {
 215				viewHolder.edit_indicator.setVisibility(View.VISIBLE);
 216				viewHolder.edit_indicator.setImageResource(darkBackground ? R.drawable.ic_mode_edit_white_18dp : R.drawable.ic_mode_edit_black_18dp);
 217				viewHolder.edit_indicator.setAlpha(darkBackground ? 0.7f : 0.57f);
 218			} else {
 219				viewHolder.edit_indicator.setVisibility(View.GONE);
 220			}
 221		}
 222		boolean multiReceived = message.getConversation().getMode() == Conversation.MODE_MULTI
 223			&& message.getMergedStatus() <= Message.STATUS_RECEIVED;
 224		if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE || message.getTransferable() != null) {
 225			FileParams params = message.getFileParams();
 226			if (params.size > (1.5 * 1024 * 1024)) {
 227				filesize = Math.round(params.size * 1f/ (1024 * 1024))+ " MiB";
 228			} else if (params.size >= 1024) {
 229				filesize = Math.round(params.size * 1f/ 1024) + " KiB";
 230			} else if (params.size > 0){
 231				filesize = params.size + " B";
 232			}
 233			if (message.getTransferable() != null && message.getTransferable().getStatus() == Transferable.STATUS_FAILED) {
 234				error = true;
 235			}
 236		}
 237		switch (message.getMergedStatus()) {
 238			case Message.STATUS_WAITING:
 239				info = getContext().getString(R.string.waiting);
 240				break;
 241			case Message.STATUS_UNSEND:
 242				Transferable d = message.getTransferable();
 243				if (d!=null) {
 244					info = getContext().getString(R.string.sending_file,d.getProgress());
 245				} else {
 246					info = getContext().getString(R.string.sending);
 247				}
 248				break;
 249			case Message.STATUS_OFFERED:
 250				info = getContext().getString(R.string.offering);
 251				break;
 252			case Message.STATUS_SEND_RECEIVED:
 253				if (mIndicateReceived) {
 254					viewHolder.indicatorReceived.setVisibility(View.VISIBLE);
 255				}
 256				break;
 257			case Message.STATUS_SEND_DISPLAYED:
 258				if (mIndicateReceived) {
 259					viewHolder.indicatorReceived.setVisibility(View.VISIBLE);
 260				}
 261				break;
 262			case Message.STATUS_SEND_FAILED:
 263				info = getContext().getString(R.string.send_failed);
 264				error = true;
 265				break;
 266			default:
 267				if (multiReceived) {
 268					info = UIHelper.getMessageDisplayName(message);
 269				}
 270				break;
 271		}
 272		if (error && type == SENT) {
 273			viewHolder.time.setTextColor(activity.getWarningTextColor());
 274		} else {
 275			viewHolder.time.setTextColor(this.getMessageTextColor(darkBackground,false));
 276		}
 277		if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 278			viewHolder.indicator.setVisibility(View.GONE);
 279		} else {
 280			boolean verified = false;
 281			if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
 282				final FingerprintStatus status = message.getConversation()
 283						.getAccount().getAxolotlService().getFingerprintTrust(
 284								message.getFingerprint());
 285				if (status != null && status.isVerified()) {
 286					verified = true;
 287				}
 288			}
 289			if (verified) {
 290				viewHolder.indicator.setImageResource(darkBackground ? R.drawable.ic_verified_user_white_18dp : R.drawable.ic_verified_user_black_18dp);
 291			} else {
 292				viewHolder.indicator.setImageResource(darkBackground ? R.drawable.ic_lock_white_18dp : R.drawable.ic_lock_black_18dp);
 293			}
 294			if (darkBackground) {
 295				viewHolder.indicator.setAlpha(0.7f);
 296			} else {
 297				viewHolder.indicator.setAlpha(0.57f);
 298			}
 299			viewHolder.indicator.setVisibility(View.VISIBLE);
 300		}
 301
 302		String formatedTime = UIHelper.readableTimeDifferenceFull(getContext(), message.getMergedTimeSent());
 303		if (message.getStatus() <= Message.STATUS_RECEIVED) {
 304			if ((filesize != null) && (info != null)) {
 305				viewHolder.time.setText(formatedTime + " \u00B7 " + filesize +" \u00B7 " + info);
 306			} else if ((filesize == null) && (info != null)) {
 307				viewHolder.time.setText(formatedTime + " \u00B7 " + info);
 308			} else if ((filesize != null) && (info == null)) {
 309				viewHolder.time.setText(formatedTime + " \u00B7 " + filesize);
 310			} else {
 311				viewHolder.time.setText(formatedTime);
 312			}
 313		} else {
 314			if ((filesize != null) && (info != null)) {
 315				viewHolder.time.setText(filesize + " \u00B7 " + info);
 316			} else if ((filesize == null) && (info != null)) {
 317				if (error) {
 318					viewHolder.time.setText(info + " \u00B7 " + formatedTime);
 319				} else {
 320					viewHolder.time.setText(info);
 321				}
 322			} else if ((filesize != null) && (info == null)) {
 323				viewHolder.time.setText(filesize + " \u00B7 " + formatedTime);
 324			} else {
 325				viewHolder.time.setText(formatedTime);
 326			}
 327		}
 328	}
 329
 330	private void displayInfoMessage(ViewHolder viewHolder, String text, boolean darkBackground) {
 331		viewHolder.download_button.setVisibility(View.GONE);
 332		viewHolder.audioPlayer.setVisibility(View.GONE);
 333		viewHolder.image.setVisibility(View.GONE);
 334		viewHolder.messageBody.setVisibility(View.VISIBLE);
 335		viewHolder.messageBody.setText(text);
 336		viewHolder.messageBody.setTextColor(getMessageTextColor(darkBackground, false));
 337		viewHolder.messageBody.setTypeface(null, Typeface.ITALIC);
 338		viewHolder.messageBody.setTextIsSelectable(false);
 339	}
 340
 341	private void displayDecryptionFailed(ViewHolder viewHolder, boolean darkBackground) {
 342		viewHolder.download_button.setVisibility(View.GONE);
 343		viewHolder.image.setVisibility(View.GONE);
 344		viewHolder.audioPlayer.setVisibility(View.GONE);
 345		viewHolder.messageBody.setVisibility(View.VISIBLE);
 346		viewHolder.messageBody.setText(getContext().getString(
 347				R.string.decryption_failed));
 348		viewHolder.messageBody.setTextColor(getMessageTextColor(darkBackground, false));
 349		viewHolder.messageBody.setTypeface(null, Typeface.NORMAL);
 350		viewHolder.messageBody.setTextIsSelectable(false);
 351	}
 352
 353	private void displayEmojiMessage(final ViewHolder viewHolder, final String body) {
 354		viewHolder.download_button.setVisibility(View.GONE);
 355		viewHolder.audioPlayer.setVisibility(View.GONE);
 356		viewHolder.image.setVisibility(View.GONE);
 357		viewHolder.messageBody.setVisibility(View.VISIBLE);
 358		Spannable span = new SpannableString(body);
 359		float size = Emoticons.isEmoji(body) ? 3.0f : 2.0f;
 360		span.setSpan(new RelativeSizeSpan(size), 0, body.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 361		viewHolder.messageBody.setText(EmojiWrapper.transform(span));
 362	}
 363
 364	private int applyQuoteSpan(SpannableStringBuilder body, int start, int end, boolean darkBackground) {
 365		if (start > 1 && !"\n\n".equals(body.subSequence(start - 2, start).toString())) {
 366			body.insert(start++, "\n");
 367			body.setSpan(new DividerSpan(false), start - 2, start, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 368			end++;
 369		}
 370		if (end < body.length() - 1 && !"\n\n".equals(body.subSequence(end, end + 2).toString())) {
 371			body.insert(end, "\n");
 372			body.setSpan(new DividerSpan(false), end, end + 2, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 373		}
 374		int color = darkBackground ? this.getMessageTextColor(darkBackground, false)
 375				: ContextCompat.getColor(activity, R.color.bubble);
 376		DisplayMetrics metrics = getContext().getResources().getDisplayMetrics();
 377		body.setSpan(new QuoteSpan(color, metrics), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 378		return 0;
 379	}
 380
 381	/**
 382	 * Applies QuoteSpan to group of lines which starts with > or » characters.
 383	 * Appends likebreaks and applies DividerSpan to them to show a padding between quote and text.
 384	 */
 385	private boolean handleTextQuotes(SpannableStringBuilder body, boolean darkBackground) {
 386		boolean startsWithQuote = false;
 387		char previous = '\n';
 388		int lineStart = -1;
 389		int lineTextStart = -1;
 390		int quoteStart = -1;
 391		for (int i = 0; i <= body.length(); i++) {
 392			char current = body.length() > i ? body.charAt(i) : '\n';
 393			if (lineStart == -1) {
 394				if (previous == '\n') {
 395					if ((current == '>' && UIHelper.isPositionFollowedByQuoteableCharacter(body,i))
 396							|| current == '\u00bb' && !UIHelper.isPositionFollowedByQuote(body,i)) {
 397						// Line start with quote
 398						lineStart = i;
 399						if (quoteStart == -1) quoteStart = i;
 400						if (i == 0) startsWithQuote = true;
 401					} else if (quoteStart >= 0) {
 402						// Line start without quote, apply spans there
 403						applyQuoteSpan(body, quoteStart, i - 1, darkBackground);
 404						quoteStart = -1;
 405					}
 406				}
 407			} else {
 408				// Remove extra spaces between > and first character in the line
 409				// > character will be removed too
 410				if (current != ' ' && lineTextStart == -1) {
 411					lineTextStart = i;
 412				}
 413				if (current == '\n') {
 414					body.delete(lineStart, lineTextStart);
 415					i -= lineTextStart - lineStart;
 416					if (i == lineStart) {
 417						// Avoid empty lines because span over empty line can be hidden
 418						body.insert(i++, " ");
 419					}
 420					lineStart = -1;
 421					lineTextStart = -1;
 422				}
 423			}
 424			previous = current;
 425		}
 426		if (quoteStart >= 0) {
 427			// Apply spans to finishing open quote
 428			applyQuoteSpan(body, quoteStart, body.length(), darkBackground);
 429		}
 430		return startsWithQuote;
 431	}
 432
 433	private void displayTextMessage(final ViewHolder viewHolder, final Message message, boolean darkBackground, int type) {
 434		viewHolder.download_button.setVisibility(View.GONE);
 435		viewHolder.image.setVisibility(View.GONE);
 436		viewHolder.audioPlayer.setVisibility(View.GONE);
 437		viewHolder.messageBody.setVisibility(View.VISIBLE);
 438
 439		viewHolder.messageBody.setTextColor(this.getMessageTextColor(darkBackground, true));
 440		viewHolder.messageBody.setLinkTextColor(this.getMessageTextColor(darkBackground, true));
 441		viewHolder.messageBody.setHighlightColor(ContextCompat.getColor(activity, darkBackground
 442				? (type == SENT || !mUseGreenBackground ? R.color.black26 : R.color.grey800) : R.color.grey500));
 443		viewHolder.messageBody.setTypeface(null, Typeface.NORMAL);
 444
 445		if (message.getBody() != null) {
 446			final String nick = UIHelper.getMessageDisplayName(message);
 447			SpannableStringBuilder body = message.getMergedBody();
 448			boolean hasMeCommand = message.hasMeCommand();
 449			if (hasMeCommand) {
 450				body = body.replace(0, Message.ME_COMMAND.length(), nick + " ");
 451			}
 452			if (body.length() > Config.MAX_DISPLAY_MESSAGE_CHARS) {
 453				body = new SpannableStringBuilder(body, 0, Config.MAX_DISPLAY_MESSAGE_CHARS);
 454				body.append("\u2026");
 455			}
 456			Message.MergeSeparator[] mergeSeparators = body.getSpans(0, body.length(), Message.MergeSeparator.class);
 457			for (Message.MergeSeparator mergeSeparator : mergeSeparators) {
 458				int start = body.getSpanStart(mergeSeparator);
 459				int end = body.getSpanEnd(mergeSeparator);
 460				body.setSpan(new DividerSpan(true), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 461			}
 462			boolean startsWithQuote = handleTextQuotes(body, darkBackground);
 463			if (message.getType() != Message.TYPE_PRIVATE) {
 464				if (hasMeCommand) {
 465					body.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), 0, nick.length(),
 466							Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 467				}
 468			} else {
 469				String privateMarker;
 470				if (message.getStatus() <= Message.STATUS_RECEIVED) {
 471					privateMarker = activity.getString(R.string.private_message);
 472				} else {
 473					final String to;
 474					if (message.getCounterpart() != null) {
 475						to = message.getCounterpart().getResourcepart();
 476					} else {
 477						to = "";
 478					}
 479					privateMarker = activity.getString(R.string.private_message_to, to);
 480				}
 481				body.insert(0, privateMarker);
 482				int privateMarkerIndex = privateMarker.length();
 483				if (startsWithQuote) {
 484					body.insert(privateMarkerIndex, "\n\n");
 485					body.setSpan(new DividerSpan(false), privateMarkerIndex, privateMarkerIndex + 2,
 486							Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 487				} else {
 488					body.insert(privateMarkerIndex, " ");
 489				}
 490				body.setSpan(new ForegroundColorSpan(getMessageTextColor(darkBackground, false)), 0, privateMarkerIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 491				body.setSpan(new StyleSpan(Typeface.BOLD), 0, privateMarkerIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 492				if (hasMeCommand) {
 493					body.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), privateMarkerIndex + 1,
 494							privateMarkerIndex + 1 + nick.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 495				}
 496			}
 497			if (message.getConversation().getMode() == Conversation.MODE_MULTI && message.getStatus() == Message.STATUS_RECEIVED) {
 498				Pattern pattern = NotificationService.generateNickHighlightPattern(message.getConversation().getMucOptions().getActualNick());
 499				Matcher matcher = pattern.matcher(body);
 500				while(matcher.find()) {
 501					body.setSpan(new StyleSpan(Typeface.BOLD), matcher.start(), matcher.end(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 502				}
 503			}
 504			Matcher matcher = Emoticons.generatePattern(body).matcher(body);
 505			while(matcher.find()) {
 506				if (matcher.start() < matcher.end()) {
 507					body.setSpan(new RelativeSizeSpan(1.2f), matcher.start(), matcher.end(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 508				}
 509			}
 510
 511			StylingHelper.format(body, viewHolder.messageBody.getCurrentTextColor());
 512
 513			Linkify.addLinks(body, XMPP_PATTERN, "xmpp", XMPPURI_MATCH_FILTER, null);
 514			Linkify.addLinks(body, Patterns.AUTOLINK_WEB_URL, "http", WEBURL_MATCH_FILTER, WEBURL_TRANSFORM_FILTER);
 515			Linkify.addLinks(body, GeoHelper.GEO_URI, "geo");
 516			FixedURLSpan.fix(body);
 517			viewHolder.messageBody.setAutoLinkMask(0);
 518			viewHolder.messageBody.setText(EmojiWrapper.transform(body));
 519			viewHolder.messageBody.setTextIsSelectable(true);
 520			viewHolder.messageBody.setMovementMethod(ClickableMovementMethod.getInstance());
 521			listSelectionManager.onUpdate(viewHolder.messageBody, message);
 522		} else {
 523			viewHolder.messageBody.setText("");
 524			viewHolder.messageBody.setTextIsSelectable(false);
 525		}
 526	}
 527
 528	private void displayDownloadableMessage(ViewHolder viewHolder, final Message message, String text) {
 529		viewHolder.image.setVisibility(View.GONE);
 530		viewHolder.messageBody.setVisibility(View.GONE);
 531		viewHolder.audioPlayer.setVisibility(View.GONE);
 532		viewHolder.download_button.setVisibility(View.VISIBLE);
 533		viewHolder.download_button.setText(text);
 534		viewHolder.download_button.setOnClickListener(new OnClickListener() {
 535
 536			@Override
 537			public void onClick(View v) {
 538				//TODO make proper reference to fragment
 539				//activity.startDownloadable(message);
 540			}
 541		});
 542	}
 543
 544	private void displayOpenableMessage(ViewHolder viewHolder,final Message message) {
 545		viewHolder.image.setVisibility(View.GONE);
 546		viewHolder.messageBody.setVisibility(View.GONE);
 547		viewHolder.audioPlayer.setVisibility(View.GONE);
 548		viewHolder.download_button.setVisibility(View.VISIBLE);
 549		viewHolder.download_button.setText(activity.getString(R.string.open_x_file, UIHelper.getFileDescriptionString(activity, message)));
 550		viewHolder.download_button.setOnClickListener(new OnClickListener() {
 551
 552			@Override
 553			public void onClick(View v) {
 554				openDownloadable(message);
 555			}
 556		});
 557	}
 558
 559	private void displayLocationMessage(ViewHolder viewHolder, final Message message) {
 560		viewHolder.image.setVisibility(View.GONE);
 561		viewHolder.messageBody.setVisibility(View.GONE);
 562		viewHolder.audioPlayer.setVisibility(View.GONE);
 563		viewHolder.download_button.setVisibility(View.VISIBLE);
 564		viewHolder.download_button.setText(R.string.show_location);
 565		viewHolder.download_button.setOnClickListener(new OnClickListener() {
 566
 567			@Override
 568			public void onClick(View v) {
 569				showLocation(message);
 570			}
 571		});
 572	}
 573
 574	private void displayAudioMessage(ViewHolder viewHolder, Message message, boolean darkBackground) {
 575		viewHolder.image.setVisibility(View.GONE);
 576		viewHolder.messageBody.setVisibility(View.GONE);
 577		viewHolder.download_button.setVisibility(View.GONE);
 578		final RelativeLayout audioPlayer = viewHolder.audioPlayer;
 579		audioPlayer.setVisibility(View.VISIBLE);
 580		AudioPlayer.ViewHolder.get(audioPlayer).setDarkBackground(darkBackground);
 581		this.audioPlayer.init(audioPlayer, message);
 582	}
 583
 584
 585	private void displayImageMessage(ViewHolder viewHolder, final Message message) {
 586		viewHolder.download_button.setVisibility(View.GONE);
 587		viewHolder.messageBody.setVisibility(View.GONE);
 588		viewHolder.audioPlayer.setVisibility(View.GONE);
 589		viewHolder.image.setVisibility(View.VISIBLE);
 590		FileParams params = message.getFileParams();
 591		double target = metrics.density * 288;
 592		int scaledW;
 593		int scaledH;
 594		if (Math.max(params.height, params.width) * metrics.density <= target) {
 595			scaledW = (int) (params.width * metrics.density);
 596			scaledH = (int) (params.height * metrics.density);
 597		} else if (Math.max(params.height,params.width) <= target) {
 598			scaledW = params.width;
 599			scaledH = params.height;
 600		} else if (params.width <= params.height) {
 601			scaledW = (int) (params.width / ((double) params.height / target));
 602			scaledH = (int) target;
 603		} else {
 604			scaledW = (int) target;
 605			scaledH = (int) (params.height / ((double) params.width / target));
 606		}
 607		LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(scaledW, scaledH);
 608		layoutParams.setMargins(0, (int) (metrics.density * 4), 0, (int) (metrics.density * 4));
 609		viewHolder.image.setLayoutParams(layoutParams);
 610		activity.loadBitmap(message, viewHolder.image);
 611		viewHolder.image.setOnClickListener(new OnClickListener() {
 612
 613			@Override
 614			public void onClick(View v) {
 615				openDownloadable(message);
 616			}
 617		});
 618	}
 619
 620	private void loadMoreMessages(Conversation conversation) {
 621		conversation.setLastClearHistory(0,null);
 622		activity.xmppConnectionService.updateConversation(conversation);
 623		conversation.setHasMessagesLeftOnServer(true);
 624		conversation.setFirstMamReference(null);
 625		long timestamp = conversation.getLastMessageTransmitted().getTimestamp();
 626		if (timestamp == 0) {
 627			timestamp = System.currentTimeMillis();
 628		}
 629		conversation.messagesLoaded.set(true);
 630		MessageArchiveService.Query query = activity.xmppConnectionService.getMessageArchiveService().query(conversation, new MamReference(0), timestamp, false);
 631		if (query != null) {
 632			Toast.makeText(activity, R.string.fetching_history_from_server, Toast.LENGTH_LONG).show();
 633		} else {
 634			Toast.makeText(activity,R.string.not_fetching_history_retention_period, Toast.LENGTH_SHORT).show();
 635		}
 636	}
 637
 638	@Override
 639	public View getView(int position, View view, ViewGroup parent) {
 640		final Message message = getItem(position);
 641		final boolean omemoEncryption = message.getEncryption() == Message.ENCRYPTION_AXOLOTL;
 642		final boolean isInValidSession = message.isValidInSession() && (!omemoEncryption || message.isTrusted());
 643		final Conversation conversation = message.getConversation();
 644		final Account account = conversation.getAccount();
 645		final int type = getItemViewType(position);
 646		ViewHolder viewHolder;
 647		if (view == null) {
 648			viewHolder = new ViewHolder();
 649			switch (type) {
 650				case DATE_SEPARATOR:
 651					view = activity.getLayoutInflater().inflate(R.layout.message_date_bubble, parent, false);
 652					viewHolder.status_message = view.findViewById(R.id.message_body);
 653					viewHolder.message_box = view.findViewById(R.id.message_box);
 654					break;
 655				case SENT:
 656					view = activity.getLayoutInflater().inflate(R.layout.message_sent, parent, false);
 657					viewHolder.message_box = view.findViewById(R.id.message_box);
 658					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 659					viewHolder.download_button = view.findViewById(R.id.download_button);
 660					viewHolder.indicator = view.findViewById(R.id.security_indicator);
 661					viewHolder.edit_indicator = view.findViewById(R.id.edit_indicator);
 662					viewHolder.image = view.findViewById(R.id.message_image);
 663					viewHolder.messageBody = view.findViewById(R.id.message_body);
 664					viewHolder.time = view.findViewById(R.id.message_time);
 665					viewHolder.indicatorReceived = view.findViewById(R.id.indicator_received);
 666					viewHolder.audioPlayer = view.findViewById(R.id.audio_player);
 667					break;
 668				case RECEIVED:
 669					view = activity.getLayoutInflater().inflate(R.layout.message_received, parent, false);
 670					viewHolder.message_box = view.findViewById(R.id.message_box);
 671					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 672					viewHolder.download_button = view.findViewById(R.id.download_button);
 673					viewHolder.indicator = view.findViewById(R.id.security_indicator);
 674					viewHolder.edit_indicator = view.findViewById(R.id.edit_indicator);
 675					viewHolder.image = view.findViewById(R.id.message_image);
 676					viewHolder.messageBody = view.findViewById(R.id.message_body);
 677					viewHolder.time = view.findViewById(R.id.message_time);
 678					viewHolder.indicatorReceived = view.findViewById(R.id.indicator_received);
 679					viewHolder.encryption = view.findViewById(R.id.message_encryption);
 680					viewHolder.audioPlayer = view.findViewById(R.id.audio_player);
 681					break;
 682				case STATUS:
 683					view = activity.getLayoutInflater().inflate(R.layout.message_status, parent, false);
 684					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 685					viewHolder.status_message = view.findViewById(R.id.status_message);
 686					viewHolder.load_more_messages = view.findViewById(R.id.load_more_messages);
 687					break;
 688				default:
 689					throw new AssertionError("Unknown view type");
 690			}
 691			if (viewHolder.messageBody != null) {
 692				listSelectionManager.onCreate(viewHolder.messageBody,
 693						new MessageBodyActionModeCallback(viewHolder.messageBody));
 694				viewHolder.messageBody.setCopyHandler(this);
 695			}
 696			view.setTag(viewHolder);
 697		} else {
 698			viewHolder = (ViewHolder) view.getTag();
 699			if (viewHolder == null) {
 700				return view;
 701			}
 702		}
 703
 704		boolean darkBackground = type == RECEIVED && (!isInValidSession || mUseGreenBackground) || activity.isDarkTheme();
 705
 706		if (type == DATE_SEPARATOR) {
 707			if (UIHelper.today(message.getTimeSent())) {
 708				viewHolder.status_message.setText(R.string.today);
 709			} else if (UIHelper.yesterday(message.getTimeSent())) {
 710				viewHolder.status_message.setText(R.string.yesterday);
 711			} else {
 712				viewHolder.status_message.setText(DateUtils.formatDateTime(activity,message.getTimeSent(),DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_SHOW_YEAR));
 713			}
 714			viewHolder.message_box.setBackgroundResource(activity.isDarkTheme() ? R.drawable.date_bubble_grey : R.drawable.date_bubble_white);
 715			viewHolder.status_message.setTextColor(activity.getSecondaryTextColor());
 716			return view;
 717		} else if (type == STATUS) {
 718			if ("LOAD_MORE".equals(message.getBody())) {
 719				viewHolder.status_message.setVisibility(View.GONE);
 720				viewHolder.contact_picture.setVisibility(View.GONE);
 721				viewHolder.load_more_messages.setVisibility(View.VISIBLE);
 722				viewHolder.load_more_messages.setOnClickListener(new OnClickListener() {
 723					@Override
 724					public void onClick(View v) {
 725						loadMoreMessages(message.getConversation());
 726					}
 727				});
 728			} else {
 729				viewHolder.status_message.setVisibility(View.VISIBLE);
 730				viewHolder.load_more_messages.setVisibility(View.GONE);
 731				viewHolder.status_message.setText(message.getBody());
 732				boolean showAvatar;
 733				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 734					showAvatar = true;
 735					loadAvatar(message,viewHolder.contact_picture,activity.getPixel(32));
 736				} else if (message.getCounterpart() != null || message.getTrueCounterpart() != null || (message.getCounterparts() != null && message.getCounterparts().size() > 0)) {
 737					showAvatar = true;
 738					loadAvatar(message,viewHolder.contact_picture,activity.getPixel(32));
 739				} else {
 740					showAvatar = false;
 741				}
 742				if (showAvatar) {
 743					viewHolder.contact_picture.setAlpha(0.5f);
 744					viewHolder.contact_picture.setVisibility(View.VISIBLE);
 745				} else {
 746					viewHolder.contact_picture.setVisibility(View.GONE);
 747				}
 748			}
 749			return view;
 750		} else {
 751			loadAvatar(message, viewHolder.contact_picture,activity.getPixel(48));
 752		}
 753
 754		viewHolder.contact_picture
 755			.setOnClickListener(new OnClickListener() {
 756
 757				@Override
 758				public void onClick(View v) {
 759					if (MessageAdapter.this.mOnContactPictureClickedListener != null) {
 760						MessageAdapter.this.mOnContactPictureClickedListener
 761								.onContactPictureClicked(message);
 762					}
 763
 764				}
 765			});
 766		viewHolder.contact_picture
 767			.setOnLongClickListener(new OnLongClickListener() {
 768
 769				@Override
 770				public boolean onLongClick(View v) {
 771					if (MessageAdapter.this.mOnContactPictureLongClickedListener != null) {
 772						MessageAdapter.this.mOnContactPictureLongClickedListener
 773								.onContactPictureLongClicked(message);
 774						return true;
 775					} else {
 776						return false;
 777					}
 778				}
 779			});
 780
 781		final Transferable transferable = message.getTransferable();
 782		if (transferable != null && transferable.getStatus() != Transferable.STATUS_UPLOADING) {
 783			if (transferable.getStatus() == Transferable.STATUS_OFFER) {
 784				displayDownloadableMessage(viewHolder,message,activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, message)));
 785			} else if (transferable.getStatus() == Transferable.STATUS_OFFER_CHECK_FILESIZE) {
 786				displayDownloadableMessage(viewHolder, message, activity.getString(R.string.check_x_filesize, UIHelper.getFileDescriptionString(activity, message)));
 787			} else {
 788				displayInfoMessage(viewHolder, UIHelper.getMessagePreview(activity, message).first,darkBackground);
 789			}
 790		} else if (message.getType() == Message.TYPE_IMAGE && message.getEncryption() != Message.ENCRYPTION_PGP && message.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED) {
 791			displayImageMessage(viewHolder, message);
 792		} else if (message.getType() == Message.TYPE_FILE && message.getEncryption() != Message.ENCRYPTION_PGP && message.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED) {
 793			if (message.getFileParams().width > 0 && message.getFileParams().height > 0) {
 794				displayImageMessage(viewHolder, message);
 795			} else if (message.getFileParams().runtime > 0) {
 796				displayAudioMessage(viewHolder, message, darkBackground);
 797			} else {
 798				displayOpenableMessage(viewHolder, message);
 799			}
 800		} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 801			if (account.isPgpDecryptionServiceConnected()) {
 802				if (!account.hasPendingPgpIntent(conversation)) {
 803					displayInfoMessage(viewHolder, activity.getString(R.string.message_decrypting), darkBackground);
 804				} else {
 805					displayInfoMessage(viewHolder, activity.getString(R.string.pgp_message), darkBackground);
 806				}
 807			} else {
 808				displayInfoMessage(viewHolder,activity.getString(R.string.install_openkeychain),darkBackground);
 809				viewHolder.message_box.setOnClickListener(new OnClickListener() {
 810
 811							@Override
 812							public void onClick(View v) {
 813								activity.showInstallPgpDialog();
 814							}
 815						});
 816			}
 817		} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
 818			displayDecryptionFailed(viewHolder,darkBackground);
 819		} else {
 820			if (message.isGeoUri()) {
 821				displayLocationMessage(viewHolder,message);
 822			} else if (message.bodyIsOnlyEmojis() && message.getType() != Message.TYPE_PRIVATE) {
 823				displayEmojiMessage(viewHolder, message.getBody().trim());
 824			} else if (message.treatAsDownloadable()) {
 825				try {
 826					URL url = new URL(message.getBody());
 827					displayDownloadableMessage(viewHolder,
 828							message,
 829							activity.getString(R.string.check_x_filesize_on_host,
 830									UIHelper.getFileDescriptionString(activity, message),
 831									url.getHost()));
 832				} catch (Exception e) {
 833					displayDownloadableMessage(viewHolder,
 834							message,
 835							activity.getString(R.string.check_x_filesize,
 836									UIHelper.getFileDescriptionString(activity, message)));
 837				}
 838			} else {
 839				displayTextMessage(viewHolder, message, darkBackground, type);
 840			}
 841		}
 842
 843		if (type == RECEIVED) {
 844			if(isInValidSession) {
 845				int bubble;
 846				if (!mUseGreenBackground) {
 847					bubble = activity.getThemeResource(R.attr.message_bubble_received_monochrome, R.drawable.message_bubble_received_white);
 848				} else {
 849					bubble = activity.getThemeResource(R.attr.message_bubble_received_green, R.drawable.message_bubble_received);
 850				}
 851				viewHolder.message_box.setBackgroundResource(bubble);
 852				viewHolder.encryption.setVisibility(View.GONE);
 853			} else {
 854				viewHolder.message_box.setBackgroundResource(R.drawable.message_bubble_received_warning);
 855				viewHolder.encryption.setVisibility(View.VISIBLE);
 856				if (omemoEncryption && !message.isTrusted()) {
 857					viewHolder.encryption.setText(R.string.not_trusted);
 858				} else {
 859					viewHolder.encryption.setText(CryptoHelper.encryptionTypeToText(message.getEncryption()));
 860				}
 861			}
 862		}
 863
 864		displayStatus(viewHolder, message, type, darkBackground);
 865
 866		return view;
 867	}
 868
 869	@Override
 870	public void notifyDataSetChanged() {
 871		listSelectionManager.onBeforeNotifyDataSetChanged();
 872		super.notifyDataSetChanged();
 873		listSelectionManager.onAfterNotifyDataSetChanged();
 874	}
 875
 876	private String transformText(CharSequence text, int start, int end, boolean forCopy) {
 877		SpannableStringBuilder builder = new SpannableStringBuilder(text);
 878		Object copySpan = new Object();
 879		builder.setSpan(copySpan, start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 880		DividerSpan[] dividerSpans = builder.getSpans(0, builder.length(), DividerSpan.class);
 881		for (DividerSpan dividerSpan : dividerSpans) {
 882			builder.replace(builder.getSpanStart(dividerSpan), builder.getSpanEnd(dividerSpan),
 883					dividerSpan.isLarge() ? "\n\n" : "\n");
 884		}
 885		start = builder.getSpanStart(copySpan);
 886		end = builder.getSpanEnd(copySpan);
 887		if (start == -1 || end == -1) return "";
 888		builder = new SpannableStringBuilder(builder, start, end);
 889		if (forCopy) {
 890			QuoteSpan[] quoteSpans = builder.getSpans(0, builder.length(), QuoteSpan.class);
 891			for (QuoteSpan quoteSpan : quoteSpans) {
 892				builder.insert(builder.getSpanStart(quoteSpan), "> ");
 893			}
 894		}
 895		return builder.toString();
 896	}
 897
 898	@Override
 899	public String transformTextForCopy(CharSequence text, int start, int end) {
 900		if (text instanceof Spanned) {
 901			return transformText(text, start, end, true);
 902		} else {
 903			return text.toString().substring(start, end);
 904		}
 905	}
 906
 907	public FileBackend getFileBackend() {
 908		return activity.xmppConnectionService.getFileBackend();
 909	}
 910
 911	public void stopAudioPlayer() {
 912		audioPlayer.stop();
 913	}
 914
 915	public interface OnQuoteListener {
 916		public void onQuote(String text);
 917	}
 918
 919	private class MessageBodyActionModeCallback implements ActionMode.Callback {
 920
 921		private final TextView textView;
 922
 923		public MessageBodyActionModeCallback(TextView textView) {
 924			this.textView = textView;
 925		}
 926
 927		@Override
 928		public boolean onCreateActionMode(ActionMode mode, Menu menu) {
 929			if (onQuoteListener != null) {
 930				int quoteResId = activity.getThemeResource(R.attr.icon_quote, R.drawable.ic_action_reply);
 931				// 3rd item is placed after "copy" item
 932				menu.add(0, android.R.id.button1, 3, R.string.quote).setIcon(quoteResId)
 933						.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
 934			}
 935			return false;
 936		}
 937
 938		@Override
 939		public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
 940			return false;
 941		}
 942
 943		@Override
 944		public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
 945			if (item.getItemId() == android.R.id.button1) {
 946				int start = textView.getSelectionStart();
 947				int end = textView.getSelectionEnd();
 948				if (end > start) {
 949					String text = transformText(textView.getText(), start, end, false);
 950					if (onQuoteListener != null) {
 951						onQuoteListener.onQuote(text);
 952					}
 953					mode.finish();
 954				}
 955				return true;
 956			}
 957			return false;
 958		}
 959
 960		@Override
 961		public void onDestroyActionMode(ActionMode mode) {}
 962	}
 963
 964	public void openDownloadable(Message message) {
 965		DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
 966		if (!file.exists()) {
 967			Toast.makeText(activity,R.string.file_deleted,Toast.LENGTH_SHORT).show();
 968			return;
 969		}
 970		Intent openIntent = new Intent(Intent.ACTION_VIEW);
 971		String mime = file.getMimeType();
 972		if (mime == null) {
 973			mime = "*/*";
 974		}
 975		Uri uri;
 976		try {
 977			uri = FileBackend.getUriForFile(activity, file);
 978		} catch (SecurityException e) {
 979			Log.d(Config.LOGTAG,"No permission to access "+file.getAbsolutePath(),e);
 980			Toast.makeText(activity, activity.getString(R.string.no_permission_to_access_x, file.getAbsolutePath()), Toast.LENGTH_SHORT).show();
 981			return;
 982		}
 983		openIntent.setDataAndType(uri, mime);
 984		openIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
 985		PackageManager manager = activity.getPackageManager();
 986		List<ResolveInfo> info = manager.queryIntentActivities(openIntent, 0);
 987		if (info.size() == 0) {
 988			openIntent.setDataAndType(uri,"*/*");
 989		}
 990		try {
 991			getContext().startActivity(openIntent);
 992		}  catch (ActivityNotFoundException e) {
 993			Toast.makeText(activity,R.string.no_application_found_to_open_file,Toast.LENGTH_SHORT).show();
 994		}
 995	}
 996
 997	public void showLocation(Message message) {
 998		for(Intent intent : GeoHelper.createGeoIntentsFromMessage(message)) {
 999			if (intent.resolveActivity(getContext().getPackageManager()) != null) {
1000				getContext().startActivity(intent);
1001				return;
1002			}
1003		}
1004		Toast.makeText(activity,R.string.no_application_found_to_display_location,Toast.LENGTH_SHORT).show();
1005	}
1006
1007	public void updatePreferences() {
1008		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
1009		this.mIndicateReceived = p.getBoolean("indicate_received", activity.getResources().getBoolean(R.bool.indicate_received));
1010		this.mUseGreenBackground = p.getBoolean("use_green_background", activity.getResources().getBoolean(R.bool.use_green_background));
1011	}
1012
1013	public TextView getMessageBody(View view) {
1014		final Object tag = view.getTag();
1015		if (tag instanceof ViewHolder) {
1016			final ViewHolder viewHolder = (ViewHolder) tag;
1017			return viewHolder.messageBody;
1018		}
1019		return null;
1020	}
1021
1022	public interface OnContactPictureClicked {
1023		void onContactPictureClicked(Message message);
1024	}
1025
1026	public interface OnContactPictureLongClicked {
1027		void onContactPictureLongClicked(Message message);
1028	}
1029
1030	private static class ViewHolder {
1031
1032		protected LinearLayout message_box;
1033		protected Button download_button;
1034		protected ImageView image;
1035		protected ImageView indicator;
1036		protected ImageView indicatorReceived;
1037		protected TextView time;
1038		protected CopyTextView messageBody;
1039		protected ImageView contact_picture;
1040		protected TextView status_message;
1041		protected TextView encryption;
1042		public Button load_more_messages;
1043		public ImageView edit_indicator;
1044		public RelativeLayout audioPlayer;
1045	}
1046
1047	class BitmapWorkerTask extends AsyncTask<Message, Void, Bitmap> {
1048		private final WeakReference<ImageView> imageViewReference;
1049		private Message message = null;
1050		private final int size;
1051
1052		public BitmapWorkerTask(ImageView imageView, int size) {
1053			imageViewReference = new WeakReference<>(imageView);
1054			this.size = size;
1055		}
1056
1057		@Override
1058		protected Bitmap doInBackground(Message... params) {
1059			this.message = params[0];
1060			return activity.avatarService().get(this.message, size, isCancelled());
1061		}
1062
1063		@Override
1064		protected void onPostExecute(Bitmap bitmap) {
1065			if (bitmap != null && !isCancelled()) {
1066				final ImageView imageView = imageViewReference.get();
1067				if (imageView != null) {
1068					imageView.setImageBitmap(bitmap);
1069					imageView.setBackgroundColor(0x00000000);
1070				}
1071			}
1072		}
1073	}
1074
1075	public void loadAvatar(Message message, ImageView imageView, int size) {
1076		if (cancelPotentialWork(message, imageView)) {
1077			final Bitmap bm = activity.avatarService().get(message, size, true);
1078			if (bm != null) {
1079				cancelPotentialWork(message, imageView);
1080				imageView.setImageBitmap(bm);
1081				imageView.setBackgroundColor(Color.TRANSPARENT);
1082			} else {
1083				@ColorInt int bg;
1084				if (message.getType() == Message.TYPE_STATUS && message.getCounterparts() != null && message.getCounterparts().size() > 1) {
1085					bg = Color.TRANSPARENT;
1086				} else {
1087					bg = UIHelper.getColorForName(UIHelper.getMessageDisplayName(message));
1088				}
1089				imageView.setBackgroundColor(bg);
1090				imageView.setImageDrawable(null);
1091				final BitmapWorkerTask task = new BitmapWorkerTask(imageView, size);
1092				final AsyncDrawable asyncDrawable = new AsyncDrawable(activity.getResources(), null, task);
1093				imageView.setImageDrawable(asyncDrawable);
1094				try {
1095					task.execute(message);
1096				} catch (final RejectedExecutionException ignored) {
1097				}
1098			}
1099		}
1100	}
1101
1102	public static boolean cancelPotentialWork(Message message, ImageView imageView) {
1103		final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
1104
1105		if (bitmapWorkerTask != null) {
1106			final Message oldMessage = bitmapWorkerTask.message;
1107			if (oldMessage == null || message != oldMessage) {
1108				bitmapWorkerTask.cancel(true);
1109			} else {
1110				return false;
1111			}
1112		}
1113		return true;
1114	}
1115
1116	private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
1117		if (imageView != null) {
1118			final Drawable drawable = imageView.getDrawable();
1119			if (drawable instanceof AsyncDrawable) {
1120				final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
1121				return asyncDrawable.getBitmapWorkerTask();
1122			}
1123		}
1124		return null;
1125	}
1126
1127	static class AsyncDrawable extends BitmapDrawable {
1128		private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
1129
1130		public AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
1131			super(res, bitmap);
1132			bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
1133		}
1134
1135		public BitmapWorkerTask getBitmapWorkerTask() {
1136			return bitmapWorkerTaskReference.get();
1137		}
1138	}
1139}