1package eu.siacs.conversations.ui.adapter;
   2
   3import android.Manifest;
   4import android.app.Activity;
   5import android.content.ActivityNotFoundException;
   6import android.content.Intent;
   7import android.content.SharedPreferences;
   8import android.content.pm.PackageManager;
   9import android.content.pm.ResolveInfo;
  10import android.content.res.Resources;
  11import android.graphics.Bitmap;
  12import android.graphics.Color;
  13import android.graphics.Typeface;
  14import android.graphics.drawable.BitmapDrawable;
  15import android.graphics.drawable.Drawable;
  16import android.net.Uri;
  17import android.os.AsyncTask;
  18import android.preference.PreferenceManager;
  19import android.support.annotation.ColorInt;
  20import android.support.v4.app.ActivityCompat;
  21import android.support.v4.content.ContextCompat;
  22import android.text.Spannable;
  23import android.text.SpannableString;
  24import android.text.SpannableStringBuilder;
  25import android.text.Spanned;
  26import android.text.format.DateUtils;
  27import android.text.style.ForegroundColorSpan;
  28import android.text.style.RelativeSizeSpan;
  29import android.text.style.StyleSpan;
  30import android.text.util.Linkify;
  31import android.util.DisplayMetrics;
  32import android.util.Log;
  33import android.view.ActionMode;
  34import android.view.Menu;
  35import android.view.MenuItem;
  36import android.view.View;
  37import android.view.View.OnClickListener;
  38import android.view.ViewGroup;
  39import android.view.WindowManager;
  40import android.widget.ArrayAdapter;
  41import android.widget.Button;
  42import android.widget.ImageView;
  43import android.widget.LinearLayout;
  44import android.widget.RelativeLayout;
  45import android.widget.TextView;
  46import android.widget.Toast;
  47
  48import java.lang.ref.WeakReference;
  49import java.net.URL;
  50import java.util.List;
  51import java.util.Locale;
  52import java.util.concurrent.RejectedExecutionException;
  53import java.util.regex.Matcher;
  54import java.util.regex.Pattern;
  55
  56import eu.siacs.conversations.Config;
  57import eu.siacs.conversations.R;
  58import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  59import eu.siacs.conversations.entities.Account;
  60import eu.siacs.conversations.entities.Conversation;
  61import eu.siacs.conversations.entities.DownloadableFile;
  62import eu.siacs.conversations.entities.Message;
  63import eu.siacs.conversations.entities.Message.FileParams;
  64import eu.siacs.conversations.entities.Transferable;
  65import eu.siacs.conversations.persistance.FileBackend;
  66import eu.siacs.conversations.services.MessageArchiveService;
  67import eu.siacs.conversations.services.NotificationService;
  68import eu.siacs.conversations.ui.ConversationsActivity;
  69import eu.siacs.conversations.ui.ConversationFragment;
  70import eu.siacs.conversations.ui.XmppActivity;
  71import eu.siacs.conversations.ui.service.AudioPlayer;
  72import eu.siacs.conversations.ui.text.DividerSpan;
  73import eu.siacs.conversations.ui.text.FixedURLSpan;
  74import eu.siacs.conversations.ui.text.QuoteSpan;
  75import eu.siacs.conversations.ui.widget.ClickableMovementMethod;
  76import eu.siacs.conversations.ui.widget.CopyTextView;
  77import eu.siacs.conversations.ui.widget.ListSelectionManager;
  78import eu.siacs.conversations.utils.CryptoHelper;
  79import eu.siacs.conversations.utils.EmojiWrapper;
  80import eu.siacs.conversations.utils.Emoticons;
  81import eu.siacs.conversations.utils.GeoHelper;
  82import eu.siacs.conversations.utils.Patterns;
  83import eu.siacs.conversations.utils.StylingHelper;
  84import eu.siacs.conversations.utils.UIHelper;
  85import eu.siacs.conversations.utils.XmppUri;
  86import eu.siacs.conversations.xmpp.mam.MamReference;
  87
  88public class MessageAdapter extends ArrayAdapter<Message> implements CopyTextView.CopyHandler {
  89
  90	public static final String DATE_SEPARATOR_BODY = "DATE_SEPARATOR";
  91	private static final int SENT = 0;
  92	private static final int RECEIVED = 1;
  93	private static final int STATUS = 2;
  94	private static final int DATE_SEPARATOR = 3;
  95	private static final Pattern XMPP_PATTERN = Pattern
  96			.compile("xmpp\\:(?:(?:["
  97					+ Patterns.GOOD_IRI_CHAR
  98					+ "\\;\\/\\?\\@\\&\\=\\#\\~\\-\\.\\+\\!\\*\\'\\(\\)\\,\\_])"
  99					+ "|(?:\\%[a-fA-F0-9]{2}))+");
 100
 101	private static final Linkify.TransformFilter WEBURL_TRANSFORM_FILTER = (matcher, 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 removeTrailingBracket(url);
 108		} else {
 109			return "http://" + removeTrailingBracket(url);
 110		}
 111	};
 112
 113	private static String removeTrailingBracket(final String url) {
 114		int numOpenBrackets = 0;
 115		for(char c : url.toCharArray()) {
 116			if (c=='(') {
 117				++numOpenBrackets;
 118			} else if (c==')') {
 119				--numOpenBrackets;
 120			}
 121		}
 122		if (numOpenBrackets != 0 && url.charAt(url.length() - 1) == ')') {
 123			return url.substring(0,url.length() - 1);
 124		} else {
 125			return url;
 126		}
 127	}
 128
 129	private static final Linkify.MatchFilter WEBURL_MATCH_FILTER = (cs, start, end) -> start < 1 || (cs.charAt(start - 1) != '@' && cs.charAt(start - 1) != '.' && !cs.subSequence(Math.max(0, start - 3), start).equals("://"));
 130
 131	private static final Linkify.MatchFilter XMPPURI_MATCH_FILTER = (s, start, end) -> {
 132		XmppUri uri = new XmppUri(s.subSequence(start, end).toString());
 133		return uri.isJidValid();
 134	};
 135
 136	private final XmppActivity activity;
 137	private final ListSelectionManager listSelectionManager = new ListSelectionManager();
 138	private final AudioPlayer audioPlayer;
 139	private DisplayMetrics metrics;
 140	private OnContactPictureClicked mOnContactPictureClickedListener;
 141	private OnContactPictureLongClicked mOnContactPictureLongClickedListener;
 142	private boolean mIndicateReceived = false;
 143	private boolean mUseGreenBackground = false;
 144	private OnQuoteListener onQuoteListener;
 145
 146	public MessageAdapter(XmppActivity activity, List<Message> messages) {
 147		super(activity, 0, messages);
 148		this.audioPlayer = new AudioPlayer(this);
 149		this.activity = activity;
 150		metrics = getContext().getResources().getDisplayMetrics();
 151		updatePreferences();
 152	}
 153
 154	public static boolean cancelPotentialWork(Message message, ImageView imageView) {
 155		final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
 156
 157		if (bitmapWorkerTask != null) {
 158			final Message oldMessage = bitmapWorkerTask.message;
 159			if (oldMessage == null || message != oldMessage) {
 160				bitmapWorkerTask.cancel(true);
 161			} else {
 162				return false;
 163			}
 164		}
 165		return true;
 166	}
 167
 168	private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
 169		if (imageView != null) {
 170			final Drawable drawable = imageView.getDrawable();
 171			if (drawable instanceof AsyncDrawable) {
 172				final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
 173				return asyncDrawable.getBitmapWorkerTask();
 174			}
 175		}
 176		return null;
 177	}
 178
 179	public void flagScreenOn() {
 180		activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
 181	}
 182
 183	public void flagScreenOff() {
 184		activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
 185	}
 186
 187	public void setOnContactPictureClicked(OnContactPictureClicked listener) {
 188		this.mOnContactPictureClickedListener = listener;
 189	}
 190
 191	public Activity getActivity() {
 192		return activity;
 193	}
 194
 195	public void setOnContactPictureLongClicked(
 196			OnContactPictureLongClicked listener) {
 197		this.mOnContactPictureLongClickedListener = listener;
 198	}
 199
 200	public void setOnQuoteListener(OnQuoteListener listener) {
 201		this.onQuoteListener = listener;
 202	}
 203
 204	@Override
 205	public int getViewTypeCount() {
 206		return 4;
 207	}
 208
 209	public int getItemViewType(Message message) {
 210		if (message.getType() == Message.TYPE_STATUS) {
 211			if (DATE_SEPARATOR_BODY.equals(message.getBody())) {
 212				return DATE_SEPARATOR;
 213			} else {
 214				return STATUS;
 215			}
 216		} else if (message.getStatus() <= Message.STATUS_RECEIVED) {
 217			return RECEIVED;
 218		}
 219
 220		return SENT;
 221	}
 222
 223	@Override
 224	public int getItemViewType(int position) {
 225		return this.getItemViewType(getItem(position));
 226	}
 227
 228	public int getMessageTextColor(boolean onDark, boolean primary) {
 229		if (onDark) {
 230			return ContextCompat.getColor(activity, primary ? R.color.white : R.color.white70);
 231		} else {
 232			return ContextCompat.getColor(activity, primary ? R.color.black87 : R.color.black54);
 233		}
 234	}
 235
 236	private void displayStatus(ViewHolder viewHolder, Message message, int type, boolean darkBackground) {
 237		String filesize = null;
 238		String info = null;
 239		boolean error = false;
 240		if (viewHolder.indicatorReceived != null) {
 241			viewHolder.indicatorReceived.setVisibility(View.GONE);
 242		}
 243
 244		if (viewHolder.edit_indicator != null) {
 245			if (message.edited()) {
 246				viewHolder.edit_indicator.setVisibility(View.VISIBLE);
 247				viewHolder.edit_indicator.setImageResource(darkBackground ? R.drawable.ic_mode_edit_white_18dp : R.drawable.ic_mode_edit_black_18dp);
 248				viewHolder.edit_indicator.setAlpha(darkBackground ? 0.7f : 0.57f);
 249			} else {
 250				viewHolder.edit_indicator.setVisibility(View.GONE);
 251			}
 252		}
 253		boolean multiReceived = message.getConversation().getMode() == Conversation.MODE_MULTI
 254				&& message.getMergedStatus() <= Message.STATUS_RECEIVED;
 255		if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE || message.getTransferable() != null) {
 256			FileParams params = message.getFileParams();
 257			if (params.size > (1.5 * 1024 * 1024)) {
 258				filesize = Math.round(params.size * 1f / (1024 * 1024)) + " MiB";
 259			} else if (params.size >= 1024) {
 260				filesize = Math.round(params.size * 1f / 1024) + " KiB";
 261			} else if (params.size > 0) {
 262				filesize = params.size + " B";
 263			}
 264			if (message.getTransferable() != null && message.getTransferable().getStatus() == Transferable.STATUS_FAILED) {
 265				error = true;
 266			}
 267		}
 268		switch (message.getMergedStatus()) {
 269			case Message.STATUS_WAITING:
 270				info = getContext().getString(R.string.waiting);
 271				break;
 272			case Message.STATUS_UNSEND:
 273				Transferable d = message.getTransferable();
 274				if (d != null) {
 275					info = getContext().getString(R.string.sending_file, d.getProgress());
 276				} else {
 277					info = getContext().getString(R.string.sending);
 278				}
 279				break;
 280			case Message.STATUS_OFFERED:
 281				info = getContext().getString(R.string.offering);
 282				break;
 283			case Message.STATUS_SEND_RECEIVED:
 284				if (mIndicateReceived) {
 285					viewHolder.indicatorReceived.setVisibility(View.VISIBLE);
 286				}
 287				break;
 288			case Message.STATUS_SEND_DISPLAYED:
 289				if (mIndicateReceived) {
 290					viewHolder.indicatorReceived.setVisibility(View.VISIBLE);
 291				}
 292				break;
 293			case Message.STATUS_SEND_FAILED:
 294				info = getContext().getString(R.string.send_failed);
 295				error = true;
 296				break;
 297			default:
 298				if (multiReceived) {
 299					info = UIHelper.getMessageDisplayName(message);
 300				}
 301				break;
 302		}
 303		if (error && type == SENT) {
 304			viewHolder.time.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Caption_Waring);
 305		} else {
 306			if (darkBackground) {
 307				viewHolder.time.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Caption_OnDark);
 308			} else {
 309				viewHolder.time.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Caption);
 310			}
 311			viewHolder.time.setTextColor(this.getMessageTextColor(darkBackground, false));
 312		}
 313		if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 314			viewHolder.indicator.setVisibility(View.GONE);
 315		} else {
 316			boolean verified = false;
 317			if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
 318				final FingerprintStatus status = message.getConversation()
 319						.getAccount().getAxolotlService().getFingerprintTrust(
 320								message.getFingerprint());
 321				if (status != null && status.isVerified()) {
 322					verified = true;
 323				}
 324			}
 325			if (verified) {
 326				viewHolder.indicator.setImageResource(darkBackground ? R.drawable.ic_verified_user_white_18dp : R.drawable.ic_verified_user_black_18dp);
 327			} else {
 328				viewHolder.indicator.setImageResource(darkBackground ? R.drawable.ic_lock_white_18dp : R.drawable.ic_lock_black_18dp);
 329			}
 330			if (darkBackground) {
 331				viewHolder.indicator.setAlpha(0.7f);
 332			} else {
 333				viewHolder.indicator.setAlpha(0.57f);
 334			}
 335			viewHolder.indicator.setVisibility(View.VISIBLE);
 336		}
 337
 338		String formatedTime = UIHelper.readableTimeDifferenceFull(getContext(), message.getMergedTimeSent());
 339		if (message.getStatus() <= Message.STATUS_RECEIVED) {
 340			if ((filesize != null) && (info != null)) {
 341				viewHolder.time.setText(formatedTime + " \u00B7 " + filesize + " \u00B7 " + info);
 342			} else if ((filesize == null) && (info != null)) {
 343				viewHolder.time.setText(formatedTime + " \u00B7 " + info);
 344			} else if ((filesize != null) && (info == null)) {
 345				viewHolder.time.setText(formatedTime + " \u00B7 " + filesize);
 346			} else {
 347				viewHolder.time.setText(formatedTime);
 348			}
 349		} else {
 350			if ((filesize != null) && (info != null)) {
 351				viewHolder.time.setText(filesize + " \u00B7 " + info);
 352			} else if ((filesize == null) && (info != null)) {
 353				if (error) {
 354					viewHolder.time.setText(info + " \u00B7 " + formatedTime);
 355				} else {
 356					viewHolder.time.setText(info);
 357				}
 358			} else if ((filesize != null) && (info == null)) {
 359				viewHolder.time.setText(filesize + " \u00B7 " + formatedTime);
 360			} else {
 361				viewHolder.time.setText(formatedTime);
 362			}
 363		}
 364	}
 365
 366	private void displayInfoMessage(ViewHolder viewHolder, String text, boolean darkBackground) {
 367		viewHolder.download_button.setVisibility(View.GONE);
 368		viewHolder.audioPlayer.setVisibility(View.GONE);
 369		viewHolder.image.setVisibility(View.GONE);
 370		viewHolder.messageBody.setVisibility(View.VISIBLE);
 371		viewHolder.messageBody.setText(text);
 372		if (darkBackground) {
 373			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Secondary_OnDark);
 374		} else {
 375			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Secondary);
 376		}
 377		viewHolder.messageBody.setTextIsSelectable(false);
 378	}
 379
 380	private void displayEmojiMessage(final ViewHolder viewHolder, final String body, final boolean darkBackground) {
 381		viewHolder.download_button.setVisibility(View.GONE);
 382		viewHolder.audioPlayer.setVisibility(View.GONE);
 383		viewHolder.image.setVisibility(View.GONE);
 384		viewHolder.messageBody.setVisibility(View.VISIBLE);
 385		if (darkBackground) {
 386			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Emoji_OnDark);
 387		} else {
 388			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Emoji);
 389		}
 390		Spannable span = new SpannableString(body);
 391		float size = Emoticons.isEmoji(body) ? 3.0f : 2.0f;
 392		span.setSpan(new RelativeSizeSpan(size), 0, body.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 393		viewHolder.messageBody.setText(EmojiWrapper.transform(span));
 394	}
 395
 396	private int applyQuoteSpan(SpannableStringBuilder body, int start, int end, boolean darkBackground) {
 397		if (start > 1 && !"\n\n".equals(body.subSequence(start - 2, start).toString())) {
 398			body.insert(start++, "\n");
 399			body.setSpan(new DividerSpan(false), start - 2, start, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 400			end++;
 401		}
 402		if (end < body.length() - 1 && !"\n\n".equals(body.subSequence(end, end + 2).toString())) {
 403			body.insert(end, "\n");
 404			body.setSpan(new DividerSpan(false), end, end + 2, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 405		}
 406		int color = darkBackground ? this.getMessageTextColor(darkBackground, false)
 407				: ContextCompat.getColor(activity, R.color.bubble);
 408		DisplayMetrics metrics = getContext().getResources().getDisplayMetrics();
 409		body.setSpan(new QuoteSpan(color, metrics), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 410		return 0;
 411	}
 412
 413	/**
 414	 * Applies QuoteSpan to group of lines which starts with > or » characters.
 415	 * Appends likebreaks and applies DividerSpan to them to show a padding between quote and text.
 416	 */
 417	private boolean handleTextQuotes(SpannableStringBuilder body, boolean darkBackground) {
 418		boolean startsWithQuote = false;
 419		char previous = '\n';
 420		int lineStart = -1;
 421		int lineTextStart = -1;
 422		int quoteStart = -1;
 423		for (int i = 0; i <= body.length(); i++) {
 424			char current = body.length() > i ? body.charAt(i) : '\n';
 425			if (lineStart == -1) {
 426				if (previous == '\n') {
 427					if ((current == '>' && UIHelper.isPositionFollowedByQuoteableCharacter(body, i))
 428							|| current == '\u00bb' && !UIHelper.isPositionFollowedByQuote(body, i)) {
 429						// Line start with quote
 430						lineStart = i;
 431						if (quoteStart == -1) quoteStart = i;
 432						if (i == 0) startsWithQuote = true;
 433					} else if (quoteStart >= 0) {
 434						// Line start without quote, apply spans there
 435						applyQuoteSpan(body, quoteStart, i - 1, darkBackground);
 436						quoteStart = -1;
 437					}
 438				}
 439			} else {
 440				// Remove extra spaces between > and first character in the line
 441				// > character will be removed too
 442				if (current != ' ' && lineTextStart == -1) {
 443					lineTextStart = i;
 444				}
 445				if (current == '\n') {
 446					body.delete(lineStart, lineTextStart);
 447					i -= lineTextStart - lineStart;
 448					if (i == lineStart) {
 449						// Avoid empty lines because span over empty line can be hidden
 450						body.insert(i++, " ");
 451					}
 452					lineStart = -1;
 453					lineTextStart = -1;
 454				}
 455			}
 456			previous = current;
 457		}
 458		if (quoteStart >= 0) {
 459			// Apply spans to finishing open quote
 460			applyQuoteSpan(body, quoteStart, body.length(), darkBackground);
 461		}
 462		return startsWithQuote;
 463	}
 464
 465	private void displayTextMessage(final ViewHolder viewHolder, final Message message, boolean darkBackground, int type) {
 466		viewHolder.download_button.setVisibility(View.GONE);
 467		viewHolder.image.setVisibility(View.GONE);
 468		viewHolder.audioPlayer.setVisibility(View.GONE);
 469		viewHolder.messageBody.setVisibility(View.VISIBLE);
 470
 471		if (darkBackground) {
 472			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_OnDark);
 473		} else {
 474			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1);
 475		}
 476		viewHolder.messageBody.setHighlightColor(ContextCompat.getColor(activity, darkBackground
 477				? (type == SENT || !mUseGreenBackground ? R.color.black26 : R.color.grey800) : R.color.grey500));
 478		viewHolder.messageBody.setTypeface(null, Typeface.NORMAL);
 479
 480		if (message.getBody() != null) {
 481			final String nick = UIHelper.getMessageDisplayName(message);
 482			SpannableStringBuilder body = message.getMergedBody();
 483			boolean hasMeCommand = message.hasMeCommand();
 484			if (hasMeCommand) {
 485				body = body.replace(0, Message.ME_COMMAND.length(), nick + " ");
 486			}
 487			if (body.length() > Config.MAX_DISPLAY_MESSAGE_CHARS) {
 488				body = new SpannableStringBuilder(body, 0, Config.MAX_DISPLAY_MESSAGE_CHARS);
 489				body.append("\u2026");
 490			}
 491			Message.MergeSeparator[] mergeSeparators = body.getSpans(0, body.length(), Message.MergeSeparator.class);
 492			for (Message.MergeSeparator mergeSeparator : mergeSeparators) {
 493				int start = body.getSpanStart(mergeSeparator);
 494				int end = body.getSpanEnd(mergeSeparator);
 495				body.setSpan(new DividerSpan(true), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 496			}
 497			boolean startsWithQuote = handleTextQuotes(body, darkBackground);
 498			if (message.getType() != Message.TYPE_PRIVATE) {
 499				if (hasMeCommand) {
 500					body.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), 0, nick.length(),
 501							Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 502				}
 503			} else {
 504				String privateMarker;
 505				if (message.getStatus() <= Message.STATUS_RECEIVED) {
 506					privateMarker = activity.getString(R.string.private_message);
 507				} else {
 508					final String to;
 509					if (message.getCounterpart() != null) {
 510						to = message.getCounterpart().getResource();
 511					} else {
 512						to = "";
 513					}
 514					privateMarker = activity.getString(R.string.private_message_to, to);
 515				}
 516				body.insert(0, privateMarker);
 517				int privateMarkerIndex = privateMarker.length();
 518				if (startsWithQuote) {
 519					body.insert(privateMarkerIndex, "\n\n");
 520					body.setSpan(new DividerSpan(false), privateMarkerIndex, privateMarkerIndex + 2,
 521							Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 522				} else {
 523					body.insert(privateMarkerIndex, " ");
 524				}
 525				body.setSpan(new ForegroundColorSpan(getMessageTextColor(darkBackground, false)), 0, privateMarkerIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 526				body.setSpan(new StyleSpan(Typeface.BOLD), 0, privateMarkerIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 527				if (hasMeCommand) {
 528					body.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), privateMarkerIndex + 1,
 529							privateMarkerIndex + 1 + nick.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 530				}
 531			}
 532			if (message.getConversation().getMode() == Conversation.MODE_MULTI && message.getStatus() == Message.STATUS_RECEIVED) {
 533				Pattern pattern = NotificationService.generateNickHighlightPattern(message.getConversation().getMucOptions().getActualNick());
 534				Matcher matcher = pattern.matcher(body);
 535				while (matcher.find()) {
 536					body.setSpan(new StyleSpan(Typeface.BOLD), matcher.start(), matcher.end(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 537				}
 538			}
 539			Matcher matcher = Emoticons.generatePattern(body).matcher(body);
 540			while (matcher.find()) {
 541				if (matcher.start() < matcher.end()) {
 542					body.setSpan(new RelativeSizeSpan(1.2f), matcher.start(), matcher.end(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 543				}
 544			}
 545
 546			StylingHelper.format(body, viewHolder.messageBody.getCurrentTextColor());
 547
 548			Linkify.addLinks(body, XMPP_PATTERN, "xmpp", XMPPURI_MATCH_FILTER, null);
 549			Linkify.addLinks(body, Patterns.AUTOLINK_WEB_URL, "http", WEBURL_MATCH_FILTER, WEBURL_TRANSFORM_FILTER);
 550			Linkify.addLinks(body, GeoHelper.GEO_URI, "geo");
 551			FixedURLSpan.fix(body);
 552			viewHolder.messageBody.setAutoLinkMask(0);
 553			viewHolder.messageBody.setText(EmojiWrapper.transform(body));
 554			viewHolder.messageBody.setTextIsSelectable(true);
 555			viewHolder.messageBody.setMovementMethod(ClickableMovementMethod.getInstance());
 556			listSelectionManager.onUpdate(viewHolder.messageBody, message);
 557		} else {
 558			viewHolder.messageBody.setText("");
 559			viewHolder.messageBody.setTextIsSelectable(false);
 560		}
 561	}
 562
 563	private void displayDownloadableMessage(ViewHolder viewHolder, final Message message, String text) {
 564		viewHolder.image.setVisibility(View.GONE);
 565		viewHolder.messageBody.setVisibility(View.GONE);
 566		viewHolder.audioPlayer.setVisibility(View.GONE);
 567		viewHolder.download_button.setVisibility(View.VISIBLE);
 568		viewHolder.download_button.setText(text);
 569		viewHolder.download_button.setOnClickListener(v -> ConversationFragment.downloadFile(activity, message));
 570	}
 571
 572	private void displayOpenableMessage(ViewHolder viewHolder, final Message message) {
 573		viewHolder.image.setVisibility(View.GONE);
 574		viewHolder.messageBody.setVisibility(View.GONE);
 575		viewHolder.audioPlayer.setVisibility(View.GONE);
 576		viewHolder.download_button.setVisibility(View.VISIBLE);
 577		viewHolder.download_button.setText(activity.getString(R.string.open_x_file, UIHelper.getFileDescriptionString(activity, message)));
 578		viewHolder.download_button.setOnClickListener(v -> openDownloadable(message));
 579	}
 580
 581	private void displayLocationMessage(ViewHolder viewHolder, final Message message) {
 582		viewHolder.image.setVisibility(View.GONE);
 583		viewHolder.messageBody.setVisibility(View.GONE);
 584		viewHolder.audioPlayer.setVisibility(View.GONE);
 585		viewHolder.download_button.setVisibility(View.VISIBLE);
 586		viewHolder.download_button.setText(R.string.show_location);
 587		viewHolder.download_button.setOnClickListener(v -> showLocation(message));
 588	}
 589
 590	private void displayAudioMessage(ViewHolder viewHolder, Message message, boolean darkBackground) {
 591		viewHolder.image.setVisibility(View.GONE);
 592		viewHolder.messageBody.setVisibility(View.GONE);
 593		viewHolder.download_button.setVisibility(View.GONE);
 594		final RelativeLayout audioPlayer = viewHolder.audioPlayer;
 595		audioPlayer.setVisibility(View.VISIBLE);
 596		AudioPlayer.ViewHolder.get(audioPlayer).setDarkBackground(darkBackground);
 597		this.audioPlayer.init(audioPlayer, message);
 598	}
 599
 600	private void displayImageMessage(ViewHolder viewHolder, final Message message) {
 601		viewHolder.download_button.setVisibility(View.GONE);
 602		viewHolder.messageBody.setVisibility(View.GONE);
 603		viewHolder.audioPlayer.setVisibility(View.GONE);
 604		viewHolder.image.setVisibility(View.VISIBLE);
 605		FileParams params = message.getFileParams();
 606		double target = metrics.density * 288;
 607		int scaledW;
 608		int scaledH;
 609		if (Math.max(params.height, params.width) * metrics.density <= target) {
 610			scaledW = (int) (params.width * metrics.density);
 611			scaledH = (int) (params.height * metrics.density);
 612		} else if (Math.max(params.height, params.width) <= target) {
 613			scaledW = params.width;
 614			scaledH = params.height;
 615		} else if (params.width <= params.height) {
 616			scaledW = (int) (params.width / ((double) params.height / target));
 617			scaledH = (int) target;
 618		} else {
 619			scaledW = (int) target;
 620			scaledH = (int) (params.height / ((double) params.width / target));
 621		}
 622		LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(scaledW, scaledH);
 623		layoutParams.setMargins(0, (int) (metrics.density * 4), 0, (int) (metrics.density * 4));
 624		viewHolder.image.setLayoutParams(layoutParams);
 625		activity.loadBitmap(message, viewHolder.image);
 626		viewHolder.image.setOnClickListener(v -> openDownloadable(message));
 627	}
 628
 629	private void loadMoreMessages(Conversation conversation) {
 630		conversation.setLastClearHistory(0, null);
 631		activity.xmppConnectionService.updateConversation(conversation);
 632		conversation.setHasMessagesLeftOnServer(true);
 633		conversation.setFirstMamReference(null);
 634		long timestamp = conversation.getLastMessageTransmitted().getTimestamp();
 635		if (timestamp == 0) {
 636			timestamp = System.currentTimeMillis();
 637		}
 638		conversation.messagesLoaded.set(true);
 639		MessageArchiveService.Query query = activity.xmppConnectionService.getMessageArchiveService().query(conversation, new MamReference(0), timestamp, false);
 640		if (query != null) {
 641			Toast.makeText(activity, R.string.fetching_history_from_server, Toast.LENGTH_LONG).show();
 642		} else {
 643			Toast.makeText(activity, R.string.not_fetching_history_retention_period, Toast.LENGTH_SHORT).show();
 644		}
 645	}
 646
 647	@Override
 648	public View getView(int position, View view, ViewGroup parent) {
 649		final Message message = getItem(position);
 650		final boolean omemoEncryption = message.getEncryption() == Message.ENCRYPTION_AXOLOTL;
 651		final boolean isInValidSession = message.isValidInSession() && (!omemoEncryption || message.isTrusted());
 652		final Conversation conversation = message.getConversation();
 653		final Account account = conversation.getAccount();
 654		final int type = getItemViewType(position);
 655		ViewHolder viewHolder;
 656		if (view == null) {
 657			viewHolder = new ViewHolder();
 658			switch (type) {
 659				case DATE_SEPARATOR:
 660					view = activity.getLayoutInflater().inflate(R.layout.message_date_bubble, parent, false);
 661					viewHolder.status_message = view.findViewById(R.id.message_body);
 662					viewHolder.message_box = view.findViewById(R.id.message_box);
 663					break;
 664				case SENT:
 665					view = activity.getLayoutInflater().inflate(R.layout.message_sent, parent, false);
 666					viewHolder.message_box = view.findViewById(R.id.message_box);
 667					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 668					viewHolder.download_button = view.findViewById(R.id.download_button);
 669					viewHolder.indicator = view.findViewById(R.id.security_indicator);
 670					viewHolder.edit_indicator = view.findViewById(R.id.edit_indicator);
 671					viewHolder.image = view.findViewById(R.id.message_image);
 672					viewHolder.messageBody = view.findViewById(R.id.message_body);
 673					viewHolder.time = view.findViewById(R.id.message_time);
 674					viewHolder.indicatorReceived = view.findViewById(R.id.indicator_received);
 675					viewHolder.audioPlayer = view.findViewById(R.id.audio_player);
 676					break;
 677				case RECEIVED:
 678					view = activity.getLayoutInflater().inflate(R.layout.message_received, parent, false);
 679					viewHolder.message_box = view.findViewById(R.id.message_box);
 680					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 681					viewHolder.download_button = view.findViewById(R.id.download_button);
 682					viewHolder.indicator = view.findViewById(R.id.security_indicator);
 683					viewHolder.edit_indicator = view.findViewById(R.id.edit_indicator);
 684					viewHolder.image = view.findViewById(R.id.message_image);
 685					viewHolder.messageBody = view.findViewById(R.id.message_body);
 686					viewHolder.time = view.findViewById(R.id.message_time);
 687					viewHolder.indicatorReceived = view.findViewById(R.id.indicator_received);
 688					viewHolder.encryption = view.findViewById(R.id.message_encryption);
 689					viewHolder.audioPlayer = view.findViewById(R.id.audio_player);
 690					break;
 691				case STATUS:
 692					view = activity.getLayoutInflater().inflate(R.layout.message_status, parent, false);
 693					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 694					viewHolder.status_message = view.findViewById(R.id.status_message);
 695					viewHolder.load_more_messages = view.findViewById(R.id.load_more_messages);
 696					break;
 697				default:
 698					throw new AssertionError("Unknown view type");
 699			}
 700			if (viewHolder.messageBody != null) {
 701				listSelectionManager.onCreate(viewHolder.messageBody,
 702						new MessageBodyActionModeCallback(viewHolder.messageBody));
 703				viewHolder.messageBody.setCopyHandler(this);
 704			}
 705			view.setTag(viewHolder);
 706		} else {
 707			viewHolder = (ViewHolder) view.getTag();
 708			if (viewHolder == null) {
 709				return view;
 710			}
 711		}
 712
 713		boolean darkBackground = type == RECEIVED && (!isInValidSession || mUseGreenBackground) || activity.isDarkTheme();
 714
 715		if (type == DATE_SEPARATOR) {
 716			if (UIHelper.today(message.getTimeSent())) {
 717				viewHolder.status_message.setText(R.string.today);
 718			} else if (UIHelper.yesterday(message.getTimeSent())) {
 719				viewHolder.status_message.setText(R.string.yesterday);
 720			} else {
 721				viewHolder.status_message.setText(DateUtils.formatDateTime(activity, message.getTimeSent(), DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_SHOW_YEAR));
 722			}
 723			viewHolder.message_box.setBackgroundResource(activity.isDarkTheme() ? R.drawable.date_bubble_grey : R.drawable.date_bubble_white);
 724			return view;
 725		} else if (type == STATUS) {
 726			if ("LOAD_MORE".equals(message.getBody())) {
 727				viewHolder.status_message.setVisibility(View.GONE);
 728				viewHolder.contact_picture.setVisibility(View.GONE);
 729				viewHolder.load_more_messages.setVisibility(View.VISIBLE);
 730				viewHolder.load_more_messages.setOnClickListener(v -> loadMoreMessages(message.getConversation()));
 731			} else {
 732				viewHolder.status_message.setVisibility(View.VISIBLE);
 733				viewHolder.load_more_messages.setVisibility(View.GONE);
 734				viewHolder.status_message.setText(message.getBody());
 735				boolean showAvatar;
 736				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 737					showAvatar = true;
 738					loadAvatar(message, viewHolder.contact_picture, activity.getPixel(32));
 739				} else if (message.getCounterpart() != null || message.getTrueCounterpart() != null || (message.getCounterparts() != null && message.getCounterparts().size() > 0)) {
 740					showAvatar = true;
 741					loadAvatar(message, viewHolder.contact_picture, activity.getPixel(32));
 742				} else {
 743					showAvatar = false;
 744				}
 745				if (showAvatar) {
 746					viewHolder.contact_picture.setAlpha(0.5f);
 747					viewHolder.contact_picture.setVisibility(View.VISIBLE);
 748				} else {
 749					viewHolder.contact_picture.setVisibility(View.GONE);
 750				}
 751			}
 752			return view;
 753		} else {
 754			loadAvatar(message, viewHolder.contact_picture, activity.getPixel(48));
 755		}
 756
 757		resetClickListener(viewHolder.message_box, viewHolder.messageBody);
 758
 759		viewHolder.contact_picture.setOnClickListener(v -> {
 760			if (MessageAdapter.this.mOnContactPictureClickedListener != null) {
 761				MessageAdapter.this.mOnContactPictureClickedListener
 762						.onContactPictureClicked(message);
 763			}
 764
 765		});
 766		viewHolder.contact_picture.setOnLongClickListener(v -> {
 767			if (MessageAdapter.this.mOnContactPictureLongClickedListener != null) {
 768				MessageAdapter.this.mOnContactPictureLongClickedListener
 769						.onContactPictureLongClicked(message);
 770				return true;
 771			} else {
 772				return false;
 773			}
 774		});
 775
 776		final Transferable transferable = message.getTransferable();
 777		if (transferable != null && transferable.getStatus() != Transferable.STATUS_UPLOADING) {
 778			if (transferable.getStatus() == Transferable.STATUS_OFFER) {
 779				displayDownloadableMessage(viewHolder, message, activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, message)));
 780			} else if (transferable.getStatus() == Transferable.STATUS_OFFER_CHECK_FILESIZE) {
 781				displayDownloadableMessage(viewHolder, message, activity.getString(R.string.check_x_filesize, UIHelper.getFileDescriptionString(activity, message)));
 782			} else {
 783				displayInfoMessage(viewHolder, UIHelper.getMessagePreview(activity, message).first, darkBackground);
 784			}
 785		} else if (message.getType() == Message.TYPE_IMAGE && message.getEncryption() != Message.ENCRYPTION_PGP && message.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED) {
 786			displayImageMessage(viewHolder, message);
 787		} else if (message.getType() == Message.TYPE_FILE && message.getEncryption() != Message.ENCRYPTION_PGP && message.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED) {
 788			if (message.getFileParams().width > 0 && message.getFileParams().height > 0) {
 789				displayImageMessage(viewHolder, message);
 790			} else if (message.getFileParams().runtime > 0) {
 791				displayAudioMessage(viewHolder, message, darkBackground);
 792			} else {
 793				displayOpenableMessage(viewHolder, message);
 794			}
 795		} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 796			if (account.isPgpDecryptionServiceConnected()) {
 797				if (!account.hasPendingPgpIntent(conversation)) {
 798					displayInfoMessage(viewHolder, activity.getString(R.string.message_decrypting), darkBackground);
 799				} else {
 800					displayInfoMessage(viewHolder, activity.getString(R.string.pgp_message), darkBackground);
 801				}
 802			} else {
 803				displayInfoMessage(viewHolder, activity.getString(R.string.install_openkeychain), darkBackground);
 804				viewHolder.message_box.setOnClickListener(this::promptOpenKeychainInstall);
 805				viewHolder.messageBody.setOnClickListener(this::promptOpenKeychainInstall);
 806			}
 807		} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
 808			displayInfoMessage(viewHolder, activity.getString(R.string.decryption_failed), darkBackground);
 809		} else if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE) {
 810			displayInfoMessage(viewHolder, activity.getString(R.string.not_encrypted_for_this_device), darkBackground);
 811		} else {
 812			if (message.isGeoUri()) {
 813				displayLocationMessage(viewHolder, message);
 814			} else if (message.bodyIsOnlyEmojis() && message.getType() != Message.TYPE_PRIVATE) {
 815				displayEmojiMessage(viewHolder, message.getBody().trim(), darkBackground);
 816			} else if (message.treatAsDownloadable()) {
 817				try {
 818					URL url = new URL(message.getBody());
 819					displayDownloadableMessage(viewHolder,
 820							message,
 821							activity.getString(R.string.check_x_filesize_on_host,
 822									UIHelper.getFileDescriptionString(activity, message),
 823									url.getHost()));
 824				} catch (Exception e) {
 825					displayDownloadableMessage(viewHolder,
 826							message,
 827							activity.getString(R.string.check_x_filesize,
 828									UIHelper.getFileDescriptionString(activity, message)));
 829				}
 830			} else {
 831				displayTextMessage(viewHolder, message, darkBackground, type);
 832			}
 833		}
 834
 835		if (type == RECEIVED) {
 836			if (isInValidSession) {
 837				int bubble;
 838				if (!mUseGreenBackground) {
 839					bubble = activity.getThemeResource(R.attr.message_bubble_received_monochrome, R.drawable.message_bubble_received_white);
 840				} else {
 841					bubble = activity.getThemeResource(R.attr.message_bubble_received_green, R.drawable.message_bubble_received);
 842				}
 843				viewHolder.message_box.setBackgroundResource(bubble);
 844				viewHolder.encryption.setVisibility(View.GONE);
 845			} else {
 846				viewHolder.message_box.setBackgroundResource(R.drawable.message_bubble_received_warning);
 847				viewHolder.encryption.setVisibility(View.VISIBLE);
 848				if (omemoEncryption && !message.isTrusted()) {
 849					viewHolder.encryption.setText(R.string.not_trusted);
 850				} else {
 851					viewHolder.encryption.setText(CryptoHelper.encryptionTypeToText(message.getEncryption()));
 852				}
 853			}
 854		}
 855
 856		displayStatus(viewHolder, message, type, darkBackground);
 857
 858		return view;
 859	}
 860
 861	private void promptOpenKeychainInstall(View view) {
 862		activity.showInstallPgpDialog();
 863	}
 864
 865	private static void resetClickListener(View... views) {
 866		for(View view : views) {
 867			view.setOnClickListener(null);
 868		}
 869	}
 870
 871	@Override
 872	public void notifyDataSetChanged() {
 873		listSelectionManager.onBeforeNotifyDataSetChanged();
 874		super.notifyDataSetChanged();
 875		listSelectionManager.onAfterNotifyDataSetChanged();
 876	}
 877
 878	private String transformText(CharSequence text, int start, int end, boolean forCopy) {
 879		SpannableStringBuilder builder = new SpannableStringBuilder(text);
 880		Object copySpan = new Object();
 881		builder.setSpan(copySpan, start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 882		DividerSpan[] dividerSpans = builder.getSpans(0, builder.length(), DividerSpan.class);
 883		for (DividerSpan dividerSpan : dividerSpans) {
 884			builder.replace(builder.getSpanStart(dividerSpan), builder.getSpanEnd(dividerSpan),
 885					dividerSpan.isLarge() ? "\n\n" : "\n");
 886		}
 887		start = builder.getSpanStart(copySpan);
 888		end = builder.getSpanEnd(copySpan);
 889		if (start == -1 || end == -1) return "";
 890		builder = new SpannableStringBuilder(builder, start, end);
 891		if (forCopy) {
 892			QuoteSpan[] quoteSpans = builder.getSpans(0, builder.length(), QuoteSpan.class);
 893			for (QuoteSpan quoteSpan : quoteSpans) {
 894				builder.insert(builder.getSpanStart(quoteSpan), "> ");
 895			}
 896		}
 897		return builder.toString();
 898	}
 899
 900	@Override
 901	public String transformTextForCopy(CharSequence text, int start, int end) {
 902		if (text instanceof Spanned) {
 903			return transformText(text, start, end, true);
 904		} else {
 905			return text.toString().substring(start, end);
 906		}
 907	}
 908
 909	public FileBackend getFileBackend() {
 910		return activity.xmppConnectionService.getFileBackend();
 911	}
 912
 913	public void stopAudioPlayer() {
 914		audioPlayer.stop();
 915	}
 916
 917	public void startStopPending() {
 918		audioPlayer.startStopPending();
 919	}
 920
 921	public void openDownloadable(Message message) {
 922		if (ContextCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
 923			ConversationFragment.registerPendingMessage(activity, message);
 924			ActivityCompat.requestPermissions(activity, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, ConversationsActivity.REQUEST_OPEN_MESSAGE);
 925			return;
 926		}
 927		DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
 928		if (!file.exists()) {
 929			Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
 930			return;
 931		}
 932		Intent openIntent = new Intent(Intent.ACTION_VIEW);
 933		String mime = file.getMimeType();
 934		if (mime == null) {
 935			mime = "*/*";
 936		}
 937		Uri uri;
 938		try {
 939			uri = FileBackend.getUriForFile(activity, file);
 940		} catch (SecurityException e) {
 941			Log.d(Config.LOGTAG, "No permission to access " + file.getAbsolutePath(), e);
 942			Toast.makeText(activity, activity.getString(R.string.no_permission_to_access_x, file.getAbsolutePath()), Toast.LENGTH_SHORT).show();
 943			return;
 944		}
 945		openIntent.setDataAndType(uri, mime);
 946		openIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
 947		PackageManager manager = activity.getPackageManager();
 948		List<ResolveInfo> info = manager.queryIntentActivities(openIntent, 0);
 949		if (info.size() == 0) {
 950			openIntent.setDataAndType(uri, "*/*");
 951		}
 952		try {
 953			getContext().startActivity(openIntent);
 954		} catch (ActivityNotFoundException e) {
 955			Toast.makeText(activity, R.string.no_application_found_to_open_file, Toast.LENGTH_SHORT).show();
 956		}
 957	}
 958
 959	public void showLocation(Message message) {
 960		for (Intent intent : GeoHelper.createGeoIntentsFromMessage(message)) {
 961			if (intent.resolveActivity(getContext().getPackageManager()) != null) {
 962				getContext().startActivity(intent);
 963				return;
 964			}
 965		}
 966		Toast.makeText(activity, R.string.no_application_found_to_display_location, Toast.LENGTH_SHORT).show();
 967	}
 968
 969	public void updatePreferences() {
 970		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
 971		this.mIndicateReceived = p.getBoolean("indicate_received", activity.getResources().getBoolean(R.bool.indicate_received));
 972		this.mUseGreenBackground = p.getBoolean("use_green_background", activity.getResources().getBoolean(R.bool.use_green_background));
 973	}
 974
 975	public void loadAvatar(Message message, ImageView imageView, int size) {
 976		if (cancelPotentialWork(message, imageView)) {
 977			final Bitmap bm = activity.avatarService().get(message, size, true);
 978			if (bm != null) {
 979				cancelPotentialWork(message, imageView);
 980				imageView.setImageBitmap(bm);
 981				imageView.setBackgroundColor(Color.TRANSPARENT);
 982			} else {
 983				@ColorInt int bg;
 984				if (message.getType() == Message.TYPE_STATUS && message.getCounterparts() != null && message.getCounterparts().size() > 1) {
 985					bg = Color.TRANSPARENT;
 986				} else {
 987					bg = UIHelper.getColorForName(UIHelper.getMessageDisplayName(message));
 988				}
 989				imageView.setBackgroundColor(bg);
 990				imageView.setImageDrawable(null);
 991				final BitmapWorkerTask task = new BitmapWorkerTask(imageView, size);
 992				final AsyncDrawable asyncDrawable = new AsyncDrawable(activity.getResources(), null, task);
 993				imageView.setImageDrawable(asyncDrawable);
 994				try {
 995					task.execute(message);
 996				} catch (final RejectedExecutionException ignored) {
 997				}
 998			}
 999		}
1000	}
1001
1002	public interface OnQuoteListener {
1003		void onQuote(String text);
1004	}
1005
1006	public interface OnContactPictureClicked {
1007		void onContactPictureClicked(Message message);
1008	}
1009
1010	public interface OnContactPictureLongClicked {
1011		void onContactPictureLongClicked(Message message);
1012	}
1013
1014	private static class ViewHolder {
1015
1016		public Button load_more_messages;
1017		public ImageView edit_indicator;
1018		public RelativeLayout audioPlayer;
1019		protected LinearLayout message_box;
1020		protected Button download_button;
1021		protected ImageView image;
1022		protected ImageView indicator;
1023		protected ImageView indicatorReceived;
1024		protected TextView time;
1025		protected CopyTextView messageBody;
1026		protected ImageView contact_picture;
1027		protected TextView status_message;
1028		protected TextView encryption;
1029	}
1030
1031	static class AsyncDrawable extends BitmapDrawable {
1032		private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
1033
1034		public AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
1035			super(res, bitmap);
1036			bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
1037		}
1038
1039		public BitmapWorkerTask getBitmapWorkerTask() {
1040			return bitmapWorkerTaskReference.get();
1041		}
1042	}
1043
1044	private class MessageBodyActionModeCallback implements ActionMode.Callback {
1045
1046		private final TextView textView;
1047
1048		public MessageBodyActionModeCallback(TextView textView) {
1049			this.textView = textView;
1050		}
1051
1052		@Override
1053		public boolean onCreateActionMode(ActionMode mode, Menu menu) {
1054			if (onQuoteListener != null) {
1055				int quoteResId = activity.getThemeResource(R.attr.icon_quote, R.drawable.ic_action_reply);
1056				// 3rd item is placed after "copy" item
1057				menu.add(0, android.R.id.button1, 3, R.string.quote).setIcon(quoteResId)
1058						.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
1059			}
1060			return false;
1061		}
1062
1063		@Override
1064		public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
1065			return false;
1066		}
1067
1068		@Override
1069		public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
1070			if (item.getItemId() == android.R.id.button1) {
1071				int start = textView.getSelectionStart();
1072				int end = textView.getSelectionEnd();
1073				if (end > start) {
1074					String text = transformText(textView.getText(), start, end, false);
1075					if (onQuoteListener != null) {
1076						onQuoteListener.onQuote(text);
1077					}
1078					mode.finish();
1079				}
1080				return true;
1081			}
1082			return false;
1083		}
1084
1085		@Override
1086		public void onDestroyActionMode(ActionMode mode) {
1087		}
1088	}
1089
1090	class BitmapWorkerTask extends AsyncTask<Message, Void, Bitmap> {
1091		private final WeakReference<ImageView> imageViewReference;
1092		private final int size;
1093		private Message message = null;
1094
1095		public BitmapWorkerTask(ImageView imageView, int size) {
1096			imageViewReference = new WeakReference<>(imageView);
1097			this.size = size;
1098		}
1099
1100		@Override
1101		protected Bitmap doInBackground(Message... params) {
1102			this.message = params[0];
1103			return activity.avatarService().get(this.message, size, isCancelled());
1104		}
1105
1106		@Override
1107		protected void onPostExecute(Bitmap bitmap) {
1108			if (bitmap != null && !isCancelled()) {
1109				final ImageView imageView = imageViewReference.get();
1110				if (imageView != null) {
1111					imageView.setImageBitmap(bitmap);
1112					imageView.setBackgroundColor(0x00000000);
1113				}
1114			}
1115		}
1116	}
1117}