1package eu.siacs.conversations.ui.adapter;
   2
   3import android.Manifest;
   4import android.content.ActivityNotFoundException;
   5import android.content.Intent;
   6import android.content.SharedPreferences;
   7import android.content.pm.PackageManager;
   8import android.content.pm.ResolveInfo;
   9import android.content.res.Resources;
  10import android.graphics.Bitmap;
  11import android.graphics.Color;
  12import android.graphics.Typeface;
  13import android.graphics.drawable.BitmapDrawable;
  14import android.graphics.drawable.Drawable;
  15import android.net.Uri;
  16import android.os.AsyncTask;
  17import android.preference.PreferenceManager;
  18import android.support.annotation.ColorInt;
  19import android.support.v4.app.ActivityCompat;
  20import android.support.v4.content.ContextCompat;
  21import android.text.Spannable;
  22import android.text.SpannableString;
  23import android.text.SpannableStringBuilder;
  24import android.text.Spanned;
  25import android.text.format.DateUtils;
  26import android.text.style.ForegroundColorSpan;
  27import android.text.style.RelativeSizeSpan;
  28import android.text.style.StyleSpan;
  29import android.text.util.Linkify;
  30import android.util.DisplayMetrics;
  31import android.util.Log;
  32import android.view.ActionMode;
  33import android.view.Menu;
  34import android.view.MenuItem;
  35import android.view.View;
  36import android.view.View.OnClickListener;
  37import android.view.View.OnLongClickListener;
  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.ConversationActivity;
  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 = new Linkify.TransformFilter() {
 102		@Override
 103		public String transformUrl(Matcher matcher, String url) {
 104			if (url == null) {
 105				return null;
 106			}
 107			final String lcUrl = url.toLowerCase(Locale.US);
 108			if (lcUrl.startsWith("http://") || lcUrl.startsWith("https://")) {
 109				return url;
 110			} else {
 111				return "http://" + url;
 112			}
 113		}
 114	};
 115	private static final Linkify.MatchFilter WEBURL_MATCH_FILTER = new Linkify.MatchFilter() {
 116		@Override
 117		public boolean acceptMatch(CharSequence cs, int start, int end) {
 118			return start < 1 || (cs.charAt(start - 1) != '@' && cs.charAt(start - 1) != '.' && !cs.subSequence(Math.max(0, start - 3), start).equals("://"));
 119		}
 120	};
 121
 122	private static final Linkify.MatchFilter XMPPURI_MATCH_FILTER = new Linkify.MatchFilter() {
 123		@Override
 124		public boolean acceptMatch(CharSequence s, int start, int end) {
 125			XmppUri uri = new XmppUri(s.subSequence(start, end).toString());
 126			return uri.isJidValid();
 127		}
 128	};
 129
 130	private final XmppActivity activity;
 131	private final ListSelectionManager listSelectionManager = new ListSelectionManager();
 132	private final AudioPlayer audioPlayer;
 133	private DisplayMetrics metrics;
 134	private OnContactPictureClicked mOnContactPictureClickedListener;
 135	private OnContactPictureLongClicked mOnContactPictureLongClickedListener;
 136	private boolean mIndicateReceived = false;
 137	private boolean mUseGreenBackground = false;
 138	private OnQuoteListener onQuoteListener;
 139
 140	public MessageAdapter(XmppActivity activity, List<Message> messages) {
 141		super(activity, 0, messages);
 142		this.audioPlayer = new AudioPlayer(this);
 143		this.activity = activity;
 144		metrics = getContext().getResources().getDisplayMetrics();
 145		updatePreferences();
 146	}
 147
 148	public static boolean cancelPotentialWork(Message message, ImageView imageView) {
 149		final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
 150
 151		if (bitmapWorkerTask != null) {
 152			final Message oldMessage = bitmapWorkerTask.message;
 153			if (oldMessage == null || message != oldMessage) {
 154				bitmapWorkerTask.cancel(true);
 155			} else {
 156				return false;
 157			}
 158		}
 159		return true;
 160	}
 161
 162	private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
 163		if (imageView != null) {
 164			final Drawable drawable = imageView.getDrawable();
 165			if (drawable instanceof AsyncDrawable) {
 166				final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
 167				return asyncDrawable.getBitmapWorkerTask();
 168			}
 169		}
 170		return null;
 171	}
 172
 173	public void flagScreenOn() {
 174		activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
 175	}
 176
 177	public void flagScreenOff() {
 178		activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
 179	}
 180
 181	public void setOnContactPictureClicked(OnContactPictureClicked listener) {
 182		this.mOnContactPictureClickedListener = listener;
 183	}
 184
 185	public void setOnContactPictureLongClicked(
 186			OnContactPictureLongClicked listener) {
 187		this.mOnContactPictureLongClickedListener = listener;
 188	}
 189
 190	public void setOnQuoteListener(OnQuoteListener listener) {
 191		this.onQuoteListener = listener;
 192	}
 193
 194	@Override
 195	public int getViewTypeCount() {
 196		return 4;
 197	}
 198
 199	public int getItemViewType(Message message) {
 200		if (message.getType() == Message.TYPE_STATUS) {
 201			if (DATE_SEPARATOR_BODY.equals(message.getBody())) {
 202				return DATE_SEPARATOR;
 203			} else {
 204				return STATUS;
 205			}
 206		} else if (message.getStatus() <= Message.STATUS_RECEIVED) {
 207			return RECEIVED;
 208		}
 209
 210		return SENT;
 211	}
 212
 213	@Override
 214	public int getItemViewType(int position) {
 215		return this.getItemViewType(getItem(position));
 216	}
 217
 218	public int getMessageTextColor(boolean onDark, boolean primary) {
 219		if (onDark) {
 220			return ContextCompat.getColor(activity, primary ? R.color.white : R.color.white70);
 221		} else {
 222			return ContextCompat.getColor(activity, primary ? R.color.black87 : R.color.black54);
 223		}
 224	}
 225
 226	private void displayStatus(ViewHolder viewHolder, Message message, int type, boolean darkBackground) {
 227		String filesize = null;
 228		String info = null;
 229		boolean error = false;
 230		if (viewHolder.indicatorReceived != null) {
 231			viewHolder.indicatorReceived.setVisibility(View.GONE);
 232		}
 233
 234		if (viewHolder.edit_indicator != null) {
 235			if (message.edited()) {
 236				viewHolder.edit_indicator.setVisibility(View.VISIBLE);
 237				viewHolder.edit_indicator.setImageResource(darkBackground ? R.drawable.ic_mode_edit_white_18dp : R.drawable.ic_mode_edit_black_18dp);
 238				viewHolder.edit_indicator.setAlpha(darkBackground ? 0.7f : 0.57f);
 239			} else {
 240				viewHolder.edit_indicator.setVisibility(View.GONE);
 241			}
 242		}
 243		boolean multiReceived = message.getConversation().getMode() == Conversation.MODE_MULTI
 244				&& message.getMergedStatus() <= Message.STATUS_RECEIVED;
 245		if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE || message.getTransferable() != null) {
 246			FileParams params = message.getFileParams();
 247			if (params.size > (1.5 * 1024 * 1024)) {
 248				filesize = Math.round(params.size * 1f / (1024 * 1024)) + " MiB";
 249			} else if (params.size >= 1024) {
 250				filesize = Math.round(params.size * 1f / 1024) + " KiB";
 251			} else if (params.size > 0) {
 252				filesize = params.size + " B";
 253			}
 254			if (message.getTransferable() != null && message.getTransferable().getStatus() == Transferable.STATUS_FAILED) {
 255				error = true;
 256			}
 257		}
 258		switch (message.getMergedStatus()) {
 259			case Message.STATUS_WAITING:
 260				info = getContext().getString(R.string.waiting);
 261				break;
 262			case Message.STATUS_UNSEND:
 263				Transferable d = message.getTransferable();
 264				if (d != null) {
 265					info = getContext().getString(R.string.sending_file, d.getProgress());
 266				} else {
 267					info = getContext().getString(R.string.sending);
 268				}
 269				break;
 270			case Message.STATUS_OFFERED:
 271				info = getContext().getString(R.string.offering);
 272				break;
 273			case Message.STATUS_SEND_RECEIVED:
 274				if (mIndicateReceived) {
 275					viewHolder.indicatorReceived.setVisibility(View.VISIBLE);
 276				}
 277				break;
 278			case Message.STATUS_SEND_DISPLAYED:
 279				if (mIndicateReceived) {
 280					viewHolder.indicatorReceived.setVisibility(View.VISIBLE);
 281				}
 282				break;
 283			case Message.STATUS_SEND_FAILED:
 284				info = getContext().getString(R.string.send_failed);
 285				error = true;
 286				break;
 287			default:
 288				if (multiReceived) {
 289					info = UIHelper.getMessageDisplayName(message);
 290				}
 291				break;
 292		}
 293		if (error && type == SENT) {
 294			viewHolder.time.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Caption_Waring);
 295		} else {
 296			if (darkBackground) {
 297				viewHolder.time.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Caption_OnDark);
 298			} else {
 299				viewHolder.time.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Caption);
 300			}
 301			viewHolder.time.setTextColor(this.getMessageTextColor(darkBackground, false));
 302		}
 303		if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 304			viewHolder.indicator.setVisibility(View.GONE);
 305		} else {
 306			boolean verified = false;
 307			if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
 308				final FingerprintStatus status = message.getConversation()
 309						.getAccount().getAxolotlService().getFingerprintTrust(
 310								message.getFingerprint());
 311				if (status != null && status.isVerified()) {
 312					verified = true;
 313				}
 314			}
 315			if (verified) {
 316				viewHolder.indicator.setImageResource(darkBackground ? R.drawable.ic_verified_user_white_18dp : R.drawable.ic_verified_user_black_18dp);
 317			} else {
 318				viewHolder.indicator.setImageResource(darkBackground ? R.drawable.ic_lock_white_18dp : R.drawable.ic_lock_black_18dp);
 319			}
 320			if (darkBackground) {
 321				viewHolder.indicator.setAlpha(0.7f);
 322			} else {
 323				viewHolder.indicator.setAlpha(0.57f);
 324			}
 325			viewHolder.indicator.setVisibility(View.VISIBLE);
 326		}
 327
 328		String formatedTime = UIHelper.readableTimeDifferenceFull(getContext(), message.getMergedTimeSent());
 329		if (message.getStatus() <= Message.STATUS_RECEIVED) {
 330			if ((filesize != null) && (info != null)) {
 331				viewHolder.time.setText(formatedTime + " \u00B7 " + filesize + " \u00B7 " + info);
 332			} else if ((filesize == null) && (info != null)) {
 333				viewHolder.time.setText(formatedTime + " \u00B7 " + info);
 334			} else if ((filesize != null) && (info == null)) {
 335				viewHolder.time.setText(formatedTime + " \u00B7 " + filesize);
 336			} else {
 337				viewHolder.time.setText(formatedTime);
 338			}
 339		} else {
 340			if ((filesize != null) && (info != null)) {
 341				viewHolder.time.setText(filesize + " \u00B7 " + info);
 342			} else if ((filesize == null) && (info != null)) {
 343				if (error) {
 344					viewHolder.time.setText(info + " \u00B7 " + formatedTime);
 345				} else {
 346					viewHolder.time.setText(info);
 347				}
 348			} else if ((filesize != null) && (info == null)) {
 349				viewHolder.time.setText(filesize + " \u00B7 " + formatedTime);
 350			} else {
 351				viewHolder.time.setText(formatedTime);
 352			}
 353		}
 354	}
 355
 356	private void displayInfoMessage(ViewHolder viewHolder, String text, boolean darkBackground) {
 357		viewHolder.download_button.setVisibility(View.GONE);
 358		viewHolder.audioPlayer.setVisibility(View.GONE);
 359		viewHolder.image.setVisibility(View.GONE);
 360		viewHolder.messageBody.setVisibility(View.VISIBLE);
 361		viewHolder.messageBody.setText(text);
 362		if (darkBackground) {
 363			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Secondary_OnDark);
 364		} else {
 365			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Secondary);
 366		}
 367		viewHolder.messageBody.setTextIsSelectable(false);
 368	}
 369
 370	private void displayDecryptionFailed(ViewHolder viewHolder, boolean darkBackground) {
 371		viewHolder.download_button.setVisibility(View.GONE);
 372		viewHolder.image.setVisibility(View.GONE);
 373		viewHolder.audioPlayer.setVisibility(View.GONE);
 374		viewHolder.messageBody.setVisibility(View.VISIBLE);
 375		if (darkBackground) {
 376			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Secondary_OnDark);
 377		} else {
 378			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Secondary);
 379		}
 380		viewHolder.messageBody.setTextIsSelectable(false);
 381	}
 382
 383	private void displayEmojiMessage(final ViewHolder viewHolder, final String body) {
 384		viewHolder.download_button.setVisibility(View.GONE);
 385		viewHolder.audioPlayer.setVisibility(View.GONE);
 386		viewHolder.image.setVisibility(View.GONE);
 387		viewHolder.messageBody.setVisibility(View.VISIBLE);
 388		Spannable span = new SpannableString(body);
 389		float size = Emoticons.isEmoji(body) ? 3.0f : 2.0f;
 390		span.setSpan(new RelativeSizeSpan(size), 0, body.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 391		viewHolder.messageBody.setText(EmojiWrapper.transform(span));
 392	}
 393
 394	private int applyQuoteSpan(SpannableStringBuilder body, int start, int end, boolean darkBackground) {
 395		if (start > 1 && !"\n\n".equals(body.subSequence(start - 2, start).toString())) {
 396			body.insert(start++, "\n");
 397			body.setSpan(new DividerSpan(false), start - 2, start, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 398			end++;
 399		}
 400		if (end < body.length() - 1 && !"\n\n".equals(body.subSequence(end, end + 2).toString())) {
 401			body.insert(end, "\n");
 402			body.setSpan(new DividerSpan(false), end, end + 2, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 403		}
 404		int color = darkBackground ? this.getMessageTextColor(darkBackground, false)
 405				: ContextCompat.getColor(activity, R.color.bubble);
 406		DisplayMetrics metrics = getContext().getResources().getDisplayMetrics();
 407		body.setSpan(new QuoteSpan(color, metrics), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 408		return 0;
 409	}
 410
 411	/**
 412	 * Applies QuoteSpan to group of lines which starts with > or » characters.
 413	 * Appends likebreaks and applies DividerSpan to them to show a padding between quote and text.
 414	 */
 415	private boolean handleTextQuotes(SpannableStringBuilder body, boolean darkBackground) {
 416		boolean startsWithQuote = false;
 417		char previous = '\n';
 418		int lineStart = -1;
 419		int lineTextStart = -1;
 420		int quoteStart = -1;
 421		for (int i = 0; i <= body.length(); i++) {
 422			char current = body.length() > i ? body.charAt(i) : '\n';
 423			if (lineStart == -1) {
 424				if (previous == '\n') {
 425					if ((current == '>' && UIHelper.isPositionFollowedByQuoteableCharacter(body, i))
 426							|| current == '\u00bb' && !UIHelper.isPositionFollowedByQuote(body, i)) {
 427						// Line start with quote
 428						lineStart = i;
 429						if (quoteStart == -1) quoteStart = i;
 430						if (i == 0) startsWithQuote = true;
 431					} else if (quoteStart >= 0) {
 432						// Line start without quote, apply spans there
 433						applyQuoteSpan(body, quoteStart, i - 1, darkBackground);
 434						quoteStart = -1;
 435					}
 436				}
 437			} else {
 438				// Remove extra spaces between > and first character in the line
 439				// > character will be removed too
 440				if (current != ' ' && lineTextStart == -1) {
 441					lineTextStart = i;
 442				}
 443				if (current == '\n') {
 444					body.delete(lineStart, lineTextStart);
 445					i -= lineTextStart - lineStart;
 446					if (i == lineStart) {
 447						// Avoid empty lines because span over empty line can be hidden
 448						body.insert(i++, " ");
 449					}
 450					lineStart = -1;
 451					lineTextStart = -1;
 452				}
 453			}
 454			previous = current;
 455		}
 456		if (quoteStart >= 0) {
 457			// Apply spans to finishing open quote
 458			applyQuoteSpan(body, quoteStart, body.length(), darkBackground);
 459		}
 460		return startsWithQuote;
 461	}
 462
 463	private void displayTextMessage(final ViewHolder viewHolder, final Message message, boolean darkBackground, int type) {
 464		viewHolder.download_button.setVisibility(View.GONE);
 465		viewHolder.image.setVisibility(View.GONE);
 466		viewHolder.audioPlayer.setVisibility(View.GONE);
 467		viewHolder.messageBody.setVisibility(View.VISIBLE);
 468
 469		if (darkBackground) {
 470			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_OnDark);
 471		} else {
 472			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1);
 473		}
 474		viewHolder.messageBody.setHighlightColor(ContextCompat.getColor(activity, darkBackground
 475				? (type == SENT || !mUseGreenBackground ? R.color.black26 : R.color.grey800) : R.color.grey500));
 476		viewHolder.messageBody.setTypeface(null, Typeface.NORMAL);
 477
 478		if (message.getBody() != null) {
 479			final String nick = UIHelper.getMessageDisplayName(message);
 480			SpannableStringBuilder body = message.getMergedBody();
 481			boolean hasMeCommand = message.hasMeCommand();
 482			if (hasMeCommand) {
 483				body = body.replace(0, Message.ME_COMMAND.length(), nick + " ");
 484			}
 485			if (body.length() > Config.MAX_DISPLAY_MESSAGE_CHARS) {
 486				body = new SpannableStringBuilder(body, 0, Config.MAX_DISPLAY_MESSAGE_CHARS);
 487				body.append("\u2026");
 488			}
 489			Message.MergeSeparator[] mergeSeparators = body.getSpans(0, body.length(), Message.MergeSeparator.class);
 490			for (Message.MergeSeparator mergeSeparator : mergeSeparators) {
 491				int start = body.getSpanStart(mergeSeparator);
 492				int end = body.getSpanEnd(mergeSeparator);
 493				body.setSpan(new DividerSpan(true), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 494			}
 495			boolean startsWithQuote = handleTextQuotes(body, darkBackground);
 496			if (message.getType() != Message.TYPE_PRIVATE) {
 497				if (hasMeCommand) {
 498					body.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), 0, nick.length(),
 499							Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 500				}
 501			} else {
 502				String privateMarker;
 503				if (message.getStatus() <= Message.STATUS_RECEIVED) {
 504					privateMarker = activity.getString(R.string.private_message);
 505				} else {
 506					final String to;
 507					if (message.getCounterpart() != null) {
 508						to = message.getCounterpart().getResourcepart();
 509					} else {
 510						to = "";
 511					}
 512					privateMarker = activity.getString(R.string.private_message_to, to);
 513				}
 514				body.insert(0, privateMarker);
 515				int privateMarkerIndex = privateMarker.length();
 516				if (startsWithQuote) {
 517					body.insert(privateMarkerIndex, "\n\n");
 518					body.setSpan(new DividerSpan(false), privateMarkerIndex, privateMarkerIndex + 2,
 519							Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 520				} else {
 521					body.insert(privateMarkerIndex, " ");
 522				}
 523				body.setSpan(new ForegroundColorSpan(getMessageTextColor(darkBackground, false)), 0, privateMarkerIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 524				body.setSpan(new StyleSpan(Typeface.BOLD), 0, privateMarkerIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 525				if (hasMeCommand) {
 526					body.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), privateMarkerIndex + 1,
 527							privateMarkerIndex + 1 + nick.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 528				}
 529			}
 530			if (message.getConversation().getMode() == Conversation.MODE_MULTI && message.getStatus() == Message.STATUS_RECEIVED) {
 531				Pattern pattern = NotificationService.generateNickHighlightPattern(message.getConversation().getMucOptions().getActualNick());
 532				Matcher matcher = pattern.matcher(body);
 533				while (matcher.find()) {
 534					body.setSpan(new StyleSpan(Typeface.BOLD), matcher.start(), matcher.end(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 535				}
 536			}
 537			Matcher matcher = Emoticons.generatePattern(body).matcher(body);
 538			while (matcher.find()) {
 539				if (matcher.start() < matcher.end()) {
 540					body.setSpan(new RelativeSizeSpan(1.2f), matcher.start(), matcher.end(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 541				}
 542			}
 543
 544			StylingHelper.format(body, viewHolder.messageBody.getCurrentTextColor());
 545
 546			Linkify.addLinks(body, XMPP_PATTERN, "xmpp", XMPPURI_MATCH_FILTER, null);
 547			Linkify.addLinks(body, Patterns.AUTOLINK_WEB_URL, "http", WEBURL_MATCH_FILTER, WEBURL_TRANSFORM_FILTER);
 548			Linkify.addLinks(body, GeoHelper.GEO_URI, "geo");
 549			FixedURLSpan.fix(body);
 550			viewHolder.messageBody.setAutoLinkMask(0);
 551			viewHolder.messageBody.setText(EmojiWrapper.transform(body));
 552			viewHolder.messageBody.setTextIsSelectable(true);
 553			viewHolder.messageBody.setMovementMethod(ClickableMovementMethod.getInstance());
 554			listSelectionManager.onUpdate(viewHolder.messageBody, message);
 555		} else {
 556			viewHolder.messageBody.setText("");
 557			viewHolder.messageBody.setTextIsSelectable(false);
 558		}
 559	}
 560
 561	private void displayDownloadableMessage(ViewHolder viewHolder, final Message message, String text) {
 562		viewHolder.image.setVisibility(View.GONE);
 563		viewHolder.messageBody.setVisibility(View.GONE);
 564		viewHolder.audioPlayer.setVisibility(View.GONE);
 565		viewHolder.download_button.setVisibility(View.VISIBLE);
 566		viewHolder.download_button.setText(text);
 567		viewHolder.download_button.setOnClickListener(v -> ConversationFragment.downloadFile(activity, message));
 568	}
 569
 570	private void displayOpenableMessage(ViewHolder viewHolder, final Message message) {
 571		viewHolder.image.setVisibility(View.GONE);
 572		viewHolder.messageBody.setVisibility(View.GONE);
 573		viewHolder.audioPlayer.setVisibility(View.GONE);
 574		viewHolder.download_button.setVisibility(View.VISIBLE);
 575		viewHolder.download_button.setText(activity.getString(R.string.open_x_file, UIHelper.getFileDescriptionString(activity, message)));
 576		viewHolder.download_button.setOnClickListener(v -> openDownloadable(message));
 577	}
 578
 579	private void displayLocationMessage(ViewHolder viewHolder, final Message message) {
 580		viewHolder.image.setVisibility(View.GONE);
 581		viewHolder.messageBody.setVisibility(View.GONE);
 582		viewHolder.audioPlayer.setVisibility(View.GONE);
 583		viewHolder.download_button.setVisibility(View.VISIBLE);
 584		viewHolder.download_button.setText(R.string.show_location);
 585		viewHolder.download_button.setOnClickListener(v -> showLocation(message));
 586	}
 587
 588	private void displayAudioMessage(ViewHolder viewHolder, Message message, boolean darkBackground) {
 589		viewHolder.image.setVisibility(View.GONE);
 590		viewHolder.messageBody.setVisibility(View.GONE);
 591		viewHolder.download_button.setVisibility(View.GONE);
 592		final RelativeLayout audioPlayer = viewHolder.audioPlayer;
 593		audioPlayer.setVisibility(View.VISIBLE);
 594		AudioPlayer.ViewHolder.get(audioPlayer).setDarkBackground(darkBackground);
 595		this.audioPlayer.init(audioPlayer, message);
 596	}
 597
 598	private void displayImageMessage(ViewHolder viewHolder, final Message message) {
 599		viewHolder.download_button.setVisibility(View.GONE);
 600		viewHolder.messageBody.setVisibility(View.GONE);
 601		viewHolder.audioPlayer.setVisibility(View.GONE);
 602		viewHolder.image.setVisibility(View.VISIBLE);
 603		FileParams params = message.getFileParams();
 604		double target = metrics.density * 288;
 605		int scaledW;
 606		int scaledH;
 607		if (Math.max(params.height, params.width) * metrics.density <= target) {
 608			scaledW = (int) (params.width * metrics.density);
 609			scaledH = (int) (params.height * metrics.density);
 610		} else if (Math.max(params.height, params.width) <= target) {
 611			scaledW = params.width;
 612			scaledH = params.height;
 613		} else if (params.width <= params.height) {
 614			scaledW = (int) (params.width / ((double) params.height / target));
 615			scaledH = (int) target;
 616		} else {
 617			scaledW = (int) target;
 618			scaledH = (int) (params.height / ((double) params.width / target));
 619		}
 620		LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(scaledW, scaledH);
 621		layoutParams.setMargins(0, (int) (metrics.density * 4), 0, (int) (metrics.density * 4));
 622		viewHolder.image.setLayoutParams(layoutParams);
 623		activity.loadBitmap(message, viewHolder.image);
 624		viewHolder.image.setOnClickListener(v -> openDownloadable(message));
 625	}
 626
 627	private void loadMoreMessages(Conversation conversation) {
 628		conversation.setLastClearHistory(0, null);
 629		activity.xmppConnectionService.updateConversation(conversation);
 630		conversation.setHasMessagesLeftOnServer(true);
 631		conversation.setFirstMamReference(null);
 632		long timestamp = conversation.getLastMessageTransmitted().getTimestamp();
 633		if (timestamp == 0) {
 634			timestamp = System.currentTimeMillis();
 635		}
 636		conversation.messagesLoaded.set(true);
 637		MessageArchiveService.Query query = activity.xmppConnectionService.getMessageArchiveService().query(conversation, new MamReference(0), timestamp, false);
 638		if (query != null) {
 639			Toast.makeText(activity, R.string.fetching_history_from_server, Toast.LENGTH_LONG).show();
 640		} else {
 641			Toast.makeText(activity, R.string.not_fetching_history_retention_period, Toast.LENGTH_SHORT).show();
 642		}
 643	}
 644
 645	@Override
 646	public View getView(int position, View view, ViewGroup parent) {
 647		final Message message = getItem(position);
 648		final boolean omemoEncryption = message.getEncryption() == Message.ENCRYPTION_AXOLOTL;
 649		final boolean isInValidSession = message.isValidInSession() && (!omemoEncryption || message.isTrusted());
 650		final Conversation conversation = message.getConversation();
 651		final Account account = conversation.getAccount();
 652		final int type = getItemViewType(position);
 653		ViewHolder viewHolder;
 654		if (view == null) {
 655			viewHolder = new ViewHolder();
 656			switch (type) {
 657				case DATE_SEPARATOR:
 658					view = activity.getLayoutInflater().inflate(R.layout.message_date_bubble, parent, false);
 659					viewHolder.status_message = view.findViewById(R.id.message_body);
 660					viewHolder.message_box = view.findViewById(R.id.message_box);
 661					break;
 662				case SENT:
 663					view = activity.getLayoutInflater().inflate(R.layout.message_sent, parent, false);
 664					viewHolder.message_box = view.findViewById(R.id.message_box);
 665					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 666					viewHolder.download_button = view.findViewById(R.id.download_button);
 667					viewHolder.indicator = view.findViewById(R.id.security_indicator);
 668					viewHolder.edit_indicator = view.findViewById(R.id.edit_indicator);
 669					viewHolder.image = view.findViewById(R.id.message_image);
 670					viewHolder.messageBody = view.findViewById(R.id.message_body);
 671					viewHolder.time = view.findViewById(R.id.message_time);
 672					viewHolder.indicatorReceived = view.findViewById(R.id.indicator_received);
 673					viewHolder.audioPlayer = view.findViewById(R.id.audio_player);
 674					break;
 675				case RECEIVED:
 676					view = activity.getLayoutInflater().inflate(R.layout.message_received, parent, false);
 677					viewHolder.message_box = view.findViewById(R.id.message_box);
 678					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 679					viewHolder.download_button = view.findViewById(R.id.download_button);
 680					viewHolder.indicator = view.findViewById(R.id.security_indicator);
 681					viewHolder.edit_indicator = view.findViewById(R.id.edit_indicator);
 682					viewHolder.image = view.findViewById(R.id.message_image);
 683					viewHolder.messageBody = view.findViewById(R.id.message_body);
 684					viewHolder.time = view.findViewById(R.id.message_time);
 685					viewHolder.indicatorReceived = view.findViewById(R.id.indicator_received);
 686					viewHolder.encryption = view.findViewById(R.id.message_encryption);
 687					viewHolder.audioPlayer = view.findViewById(R.id.audio_player);
 688					break;
 689				case STATUS:
 690					view = activity.getLayoutInflater().inflate(R.layout.message_status, parent, false);
 691					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 692					viewHolder.status_message = view.findViewById(R.id.status_message);
 693					viewHolder.load_more_messages = view.findViewById(R.id.load_more_messages);
 694					break;
 695				default:
 696					throw new AssertionError("Unknown view type");
 697			}
 698			if (viewHolder.messageBody != null) {
 699				listSelectionManager.onCreate(viewHolder.messageBody,
 700						new MessageBodyActionModeCallback(viewHolder.messageBody));
 701				viewHolder.messageBody.setCopyHandler(this);
 702			}
 703			view.setTag(viewHolder);
 704		} else {
 705			viewHolder = (ViewHolder) view.getTag();
 706			if (viewHolder == null) {
 707				return view;
 708			}
 709		}
 710
 711		boolean darkBackground = type == RECEIVED && (!isInValidSession || mUseGreenBackground) || activity.isDarkTheme();
 712
 713		if (type == DATE_SEPARATOR) {
 714			if (UIHelper.today(message.getTimeSent())) {
 715				viewHolder.status_message.setText(R.string.today);
 716			} else if (UIHelper.yesterday(message.getTimeSent())) {
 717				viewHolder.status_message.setText(R.string.yesterday);
 718			} else {
 719				viewHolder.status_message.setText(DateUtils.formatDateTime(activity, message.getTimeSent(), DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_SHOW_YEAR));
 720			}
 721			viewHolder.message_box.setBackgroundResource(activity.isDarkTheme() ? R.drawable.date_bubble_grey : R.drawable.date_bubble_white);
 722			return view;
 723		} else if (type == STATUS) {
 724			if ("LOAD_MORE".equals(message.getBody())) {
 725				viewHolder.status_message.setVisibility(View.GONE);
 726				viewHolder.contact_picture.setVisibility(View.GONE);
 727				viewHolder.load_more_messages.setVisibility(View.VISIBLE);
 728				viewHolder.load_more_messages.setOnClickListener(v -> loadMoreMessages(message.getConversation()));
 729			} else {
 730				viewHolder.status_message.setVisibility(View.VISIBLE);
 731				viewHolder.load_more_messages.setVisibility(View.GONE);
 732				viewHolder.status_message.setText(message.getBody());
 733				boolean showAvatar;
 734				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 735					showAvatar = true;
 736					loadAvatar(message, viewHolder.contact_picture, activity.getPixel(32));
 737				} else if (message.getCounterpart() != null || message.getTrueCounterpart() != null || (message.getCounterparts() != null && message.getCounterparts().size() > 0)) {
 738					showAvatar = true;
 739					loadAvatar(message, viewHolder.contact_picture, activity.getPixel(32));
 740				} else {
 741					showAvatar = false;
 742				}
 743				if (showAvatar) {
 744					viewHolder.contact_picture.setAlpha(0.5f);
 745					viewHolder.contact_picture.setVisibility(View.VISIBLE);
 746				} else {
 747					viewHolder.contact_picture.setVisibility(View.GONE);
 748				}
 749			}
 750			return view;
 751		} else {
 752			loadAvatar(message, viewHolder.contact_picture, activity.getPixel(48));
 753		}
 754
 755		viewHolder.contact_picture.setOnClickListener(v -> {
 756			if (MessageAdapter.this.mOnContactPictureClickedListener != null) {
 757				MessageAdapter.this.mOnContactPictureClickedListener
 758						.onContactPictureClicked(message);
 759			}
 760
 761		});
 762		viewHolder.contact_picture.setOnLongClickListener(v -> {
 763			if (MessageAdapter.this.mOnContactPictureLongClickedListener != null) {
 764				MessageAdapter.this.mOnContactPictureLongClickedListener
 765						.onContactPictureLongClicked(message);
 766				return true;
 767			} else {
 768				return false;
 769			}
 770		});
 771
 772		final Transferable transferable = message.getTransferable();
 773		if (transferable != null && transferable.getStatus() != Transferable.STATUS_UPLOADING) {
 774			if (transferable.getStatus() == Transferable.STATUS_OFFER) {
 775				displayDownloadableMessage(viewHolder, message, activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, message)));
 776			} else if (transferable.getStatus() == Transferable.STATUS_OFFER_CHECK_FILESIZE) {
 777				displayDownloadableMessage(viewHolder, message, activity.getString(R.string.check_x_filesize, UIHelper.getFileDescriptionString(activity, message)));
 778			} else {
 779				displayInfoMessage(viewHolder, UIHelper.getMessagePreview(activity, message).first, darkBackground);
 780			}
 781		} else if (message.getType() == Message.TYPE_IMAGE && message.getEncryption() != Message.ENCRYPTION_PGP && message.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED) {
 782			displayImageMessage(viewHolder, message);
 783		} else if (message.getType() == Message.TYPE_FILE && message.getEncryption() != Message.ENCRYPTION_PGP && message.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED) {
 784			if (message.getFileParams().width > 0 && message.getFileParams().height > 0) {
 785				displayImageMessage(viewHolder, message);
 786			} else if (message.getFileParams().runtime > 0) {
 787				displayAudioMessage(viewHolder, message, darkBackground);
 788			} else {
 789				displayOpenableMessage(viewHolder, message);
 790			}
 791		} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 792			if (account.isPgpDecryptionServiceConnected()) {
 793				if (!account.hasPendingPgpIntent(conversation)) {
 794					displayInfoMessage(viewHolder, activity.getString(R.string.message_decrypting), darkBackground);
 795				} else {
 796					displayInfoMessage(viewHolder, activity.getString(R.string.pgp_message), darkBackground);
 797				}
 798			} else {
 799				displayInfoMessage(viewHolder, activity.getString(R.string.install_openkeychain), darkBackground);
 800				viewHolder.message_box.setOnClickListener(new OnClickListener() {
 801
 802					@Override
 803					public void onClick(View v) {
 804						activity.showInstallPgpDialog();
 805					}
 806				});
 807			}
 808		} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
 809			displayDecryptionFailed(viewHolder, darkBackground);
 810		} else {
 811			if (message.isGeoUri()) {
 812				displayLocationMessage(viewHolder, message);
 813			} else if (message.bodyIsOnlyEmojis() && message.getType() != Message.TYPE_PRIVATE) {
 814				displayEmojiMessage(viewHolder, message.getBody().trim());
 815			} else if (message.treatAsDownloadable()) {
 816				try {
 817					URL url = new URL(message.getBody());
 818					displayDownloadableMessage(viewHolder,
 819							message,
 820							activity.getString(R.string.check_x_filesize_on_host,
 821									UIHelper.getFileDescriptionString(activity, message),
 822									url.getHost()));
 823				} catch (Exception e) {
 824					displayDownloadableMessage(viewHolder,
 825							message,
 826							activity.getString(R.string.check_x_filesize,
 827									UIHelper.getFileDescriptionString(activity, message)));
 828				}
 829			} else {
 830				displayTextMessage(viewHolder, message, darkBackground, type);
 831			}
 832		}
 833
 834		if (type == RECEIVED) {
 835			if (isInValidSession) {
 836				int bubble;
 837				if (!mUseGreenBackground) {
 838					bubble = activity.getThemeResource(R.attr.message_bubble_received_monochrome, R.drawable.message_bubble_received_white);
 839				} else {
 840					bubble = activity.getThemeResource(R.attr.message_bubble_received_green, R.drawable.message_bubble_received);
 841				}
 842				viewHolder.message_box.setBackgroundResource(bubble);
 843				viewHolder.encryption.setVisibility(View.GONE);
 844			} else {
 845				viewHolder.message_box.setBackgroundResource(R.drawable.message_bubble_received_warning);
 846				viewHolder.encryption.setVisibility(View.VISIBLE);
 847				if (omemoEncryption && !message.isTrusted()) {
 848					viewHolder.encryption.setText(R.string.not_trusted);
 849				} else {
 850					viewHolder.encryption.setText(CryptoHelper.encryptionTypeToText(message.getEncryption()));
 851				}
 852			}
 853		}
 854
 855		displayStatus(viewHolder, message, type, darkBackground);
 856
 857		return view;
 858	}
 859
 860	@Override
 861	public void notifyDataSetChanged() {
 862		listSelectionManager.onBeforeNotifyDataSetChanged();
 863		super.notifyDataSetChanged();
 864		listSelectionManager.onAfterNotifyDataSetChanged();
 865	}
 866
 867	private String transformText(CharSequence text, int start, int end, boolean forCopy) {
 868		SpannableStringBuilder builder = new SpannableStringBuilder(text);
 869		Object copySpan = new Object();
 870		builder.setSpan(copySpan, start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 871		DividerSpan[] dividerSpans = builder.getSpans(0, builder.length(), DividerSpan.class);
 872		for (DividerSpan dividerSpan : dividerSpans) {
 873			builder.replace(builder.getSpanStart(dividerSpan), builder.getSpanEnd(dividerSpan),
 874					dividerSpan.isLarge() ? "\n\n" : "\n");
 875		}
 876		start = builder.getSpanStart(copySpan);
 877		end = builder.getSpanEnd(copySpan);
 878		if (start == -1 || end == -1) return "";
 879		builder = new SpannableStringBuilder(builder, start, end);
 880		if (forCopy) {
 881			QuoteSpan[] quoteSpans = builder.getSpans(0, builder.length(), QuoteSpan.class);
 882			for (QuoteSpan quoteSpan : quoteSpans) {
 883				builder.insert(builder.getSpanStart(quoteSpan), "> ");
 884			}
 885		}
 886		return builder.toString();
 887	}
 888
 889	@Override
 890	public String transformTextForCopy(CharSequence text, int start, int end) {
 891		if (text instanceof Spanned) {
 892			return transformText(text, start, end, true);
 893		} else {
 894			return text.toString().substring(start, end);
 895		}
 896	}
 897
 898	public FileBackend getFileBackend() {
 899		return activity.xmppConnectionService.getFileBackend();
 900	}
 901
 902	public void stopAudioPlayer() {
 903		audioPlayer.stop();
 904	}
 905
 906	public void openDownloadable(Message message) {
 907		if (ContextCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
 908			ConversationFragment.registerPendingMessage(activity, message);
 909			ActivityCompat.requestPermissions(activity, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, ConversationActivity.REQUEST_OPEN_MESSAGE);
 910			return;
 911		}
 912		DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
 913		if (!file.exists()) {
 914			Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
 915			return;
 916		}
 917		Intent openIntent = new Intent(Intent.ACTION_VIEW);
 918		String mime = file.getMimeType();
 919		if (mime == null) {
 920			mime = "*/*";
 921		}
 922		Uri uri;
 923		try {
 924			uri = FileBackend.getUriForFile(activity, file);
 925		} catch (SecurityException e) {
 926			Log.d(Config.LOGTAG, "No permission to access " + file.getAbsolutePath(), e);
 927			Toast.makeText(activity, activity.getString(R.string.no_permission_to_access_x, file.getAbsolutePath()), Toast.LENGTH_SHORT).show();
 928			return;
 929		}
 930		openIntent.setDataAndType(uri, mime);
 931		openIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
 932		PackageManager manager = activity.getPackageManager();
 933		List<ResolveInfo> info = manager.queryIntentActivities(openIntent, 0);
 934		if (info.size() == 0) {
 935			openIntent.setDataAndType(uri, "*/*");
 936		}
 937		try {
 938			getContext().startActivity(openIntent);
 939		} catch (ActivityNotFoundException e) {
 940			Toast.makeText(activity, R.string.no_application_found_to_open_file, Toast.LENGTH_SHORT).show();
 941		}
 942	}
 943
 944	public void showLocation(Message message) {
 945		for (Intent intent : GeoHelper.createGeoIntentsFromMessage(message)) {
 946			if (intent.resolveActivity(getContext().getPackageManager()) != null) {
 947				getContext().startActivity(intent);
 948				return;
 949			}
 950		}
 951		Toast.makeText(activity, R.string.no_application_found_to_display_location, Toast.LENGTH_SHORT).show();
 952	}
 953
 954	public void updatePreferences() {
 955		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
 956		this.mIndicateReceived = p.getBoolean("indicate_received", activity.getResources().getBoolean(R.bool.indicate_received));
 957		this.mUseGreenBackground = p.getBoolean("use_green_background", activity.getResources().getBoolean(R.bool.use_green_background));
 958	}
 959
 960	public void loadAvatar(Message message, ImageView imageView, int size) {
 961		if (cancelPotentialWork(message, imageView)) {
 962			final Bitmap bm = activity.avatarService().get(message, size, true);
 963			if (bm != null) {
 964				cancelPotentialWork(message, imageView);
 965				imageView.setImageBitmap(bm);
 966				imageView.setBackgroundColor(Color.TRANSPARENT);
 967			} else {
 968				@ColorInt int bg;
 969				if (message.getType() == Message.TYPE_STATUS && message.getCounterparts() != null && message.getCounterparts().size() > 1) {
 970					bg = Color.TRANSPARENT;
 971				} else {
 972					bg = UIHelper.getColorForName(UIHelper.getMessageDisplayName(message));
 973				}
 974				imageView.setBackgroundColor(bg);
 975				imageView.setImageDrawable(null);
 976				final BitmapWorkerTask task = new BitmapWorkerTask(imageView, size);
 977				final AsyncDrawable asyncDrawable = new AsyncDrawable(activity.getResources(), null, task);
 978				imageView.setImageDrawable(asyncDrawable);
 979				try {
 980					task.execute(message);
 981				} catch (final RejectedExecutionException ignored) {
 982				}
 983			}
 984		}
 985	}
 986
 987	public interface OnQuoteListener {
 988		void onQuote(String text);
 989	}
 990
 991	public interface OnContactPictureClicked {
 992		void onContactPictureClicked(Message message);
 993	}
 994
 995	public interface OnContactPictureLongClicked {
 996		void onContactPictureLongClicked(Message message);
 997	}
 998
 999	private static class ViewHolder {
1000
1001		public Button load_more_messages;
1002		public ImageView edit_indicator;
1003		public RelativeLayout audioPlayer;
1004		protected LinearLayout message_box;
1005		protected Button download_button;
1006		protected ImageView image;
1007		protected ImageView indicator;
1008		protected ImageView indicatorReceived;
1009		protected TextView time;
1010		protected CopyTextView messageBody;
1011		protected ImageView contact_picture;
1012		protected TextView status_message;
1013		protected TextView encryption;
1014	}
1015
1016	static class AsyncDrawable extends BitmapDrawable {
1017		private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
1018
1019		public AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
1020			super(res, bitmap);
1021			bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
1022		}
1023
1024		public BitmapWorkerTask getBitmapWorkerTask() {
1025			return bitmapWorkerTaskReference.get();
1026		}
1027	}
1028
1029	private class MessageBodyActionModeCallback implements ActionMode.Callback {
1030
1031		private final TextView textView;
1032
1033		public MessageBodyActionModeCallback(TextView textView) {
1034			this.textView = textView;
1035		}
1036
1037		@Override
1038		public boolean onCreateActionMode(ActionMode mode, Menu menu) {
1039			if (onQuoteListener != null) {
1040				int quoteResId = activity.getThemeResource(R.attr.icon_quote, R.drawable.ic_action_reply);
1041				// 3rd item is placed after "copy" item
1042				menu.add(0, android.R.id.button1, 3, R.string.quote).setIcon(quoteResId)
1043						.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
1044			}
1045			return false;
1046		}
1047
1048		@Override
1049		public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
1050			return false;
1051		}
1052
1053		@Override
1054		public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
1055			if (item.getItemId() == android.R.id.button1) {
1056				int start = textView.getSelectionStart();
1057				int end = textView.getSelectionEnd();
1058				if (end > start) {
1059					String text = transformText(textView.getText(), start, end, false);
1060					if (onQuoteListener != null) {
1061						onQuoteListener.onQuote(text);
1062					}
1063					mode.finish();
1064				}
1065				return true;
1066			}
1067			return false;
1068		}
1069
1070		@Override
1071		public void onDestroyActionMode(ActionMode mode) {
1072		}
1073	}
1074
1075	class BitmapWorkerTask extends AsyncTask<Message, Void, Bitmap> {
1076		private final WeakReference<ImageView> imageViewReference;
1077		private final int size;
1078		private Message message = null;
1079
1080		public BitmapWorkerTask(ImageView imageView, int size) {
1081			imageViewReference = new WeakReference<>(imageView);
1082			this.size = size;
1083		}
1084
1085		@Override
1086		protected Bitmap doInBackground(Message... params) {
1087			this.message = params[0];
1088			return activity.avatarService().get(this.message, size, isCancelled());
1089		}
1090
1091		@Override
1092		protected void onPostExecute(Bitmap bitmap) {
1093			if (bitmap != null && !isCancelled()) {
1094				final ImageView imageView = imageViewReference.get();
1095				if (imageView != null) {
1096					imageView.setImageBitmap(bitmap);
1097					imageView.setBackgroundColor(0x00000000);
1098				}
1099			}
1100		}
1101	}
1102}