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 displayDecryptionFailed(ViewHolder viewHolder, boolean darkBackground) {
 381		viewHolder.download_button.setVisibility(View.GONE);
 382		viewHolder.image.setVisibility(View.GONE);
 383		viewHolder.audioPlayer.setVisibility(View.GONE);
 384		viewHolder.messageBody.setVisibility(View.VISIBLE);
 385		if (darkBackground) {
 386			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Secondary_OnDark);
 387		} else {
 388			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Secondary);
 389		}
 390		viewHolder.messageBody.setTextIsSelectable(false);
 391	}
 392
 393	private void displayEmojiMessage(final ViewHolder viewHolder, final String body) {
 394		viewHolder.download_button.setVisibility(View.GONE);
 395		viewHolder.audioPlayer.setVisibility(View.GONE);
 396		viewHolder.image.setVisibility(View.GONE);
 397		viewHolder.messageBody.setVisibility(View.VISIBLE);
 398		Spannable span = new SpannableString(body);
 399		float size = Emoticons.isEmoji(body) ? 3.0f : 2.0f;
 400		span.setSpan(new RelativeSizeSpan(size), 0, body.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 401		viewHolder.messageBody.setText(EmojiWrapper.transform(span));
 402	}
 403
 404	private int applyQuoteSpan(SpannableStringBuilder body, int start, int end, boolean darkBackground) {
 405		if (start > 1 && !"\n\n".equals(body.subSequence(start - 2, start).toString())) {
 406			body.insert(start++, "\n");
 407			body.setSpan(new DividerSpan(false), start - 2, start, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 408			end++;
 409		}
 410		if (end < body.length() - 1 && !"\n\n".equals(body.subSequence(end, end + 2).toString())) {
 411			body.insert(end, "\n");
 412			body.setSpan(new DividerSpan(false), end, end + 2, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 413		}
 414		int color = darkBackground ? this.getMessageTextColor(darkBackground, false)
 415				: ContextCompat.getColor(activity, R.color.bubble);
 416		DisplayMetrics metrics = getContext().getResources().getDisplayMetrics();
 417		body.setSpan(new QuoteSpan(color, metrics), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 418		return 0;
 419	}
 420
 421	/**
 422	 * Applies QuoteSpan to group of lines which starts with > or » characters.
 423	 * Appends likebreaks and applies DividerSpan to them to show a padding between quote and text.
 424	 */
 425	private boolean handleTextQuotes(SpannableStringBuilder body, boolean darkBackground) {
 426		boolean startsWithQuote = false;
 427		char previous = '\n';
 428		int lineStart = -1;
 429		int lineTextStart = -1;
 430		int quoteStart = -1;
 431		for (int i = 0; i <= body.length(); i++) {
 432			char current = body.length() > i ? body.charAt(i) : '\n';
 433			if (lineStart == -1) {
 434				if (previous == '\n') {
 435					if ((current == '>' && UIHelper.isPositionFollowedByQuoteableCharacter(body, i))
 436							|| current == '\u00bb' && !UIHelper.isPositionFollowedByQuote(body, i)) {
 437						// Line start with quote
 438						lineStart = i;
 439						if (quoteStart == -1) quoteStart = i;
 440						if (i == 0) startsWithQuote = true;
 441					} else if (quoteStart >= 0) {
 442						// Line start without quote, apply spans there
 443						applyQuoteSpan(body, quoteStart, i - 1, darkBackground);
 444						quoteStart = -1;
 445					}
 446				}
 447			} else {
 448				// Remove extra spaces between > and first character in the line
 449				// > character will be removed too
 450				if (current != ' ' && lineTextStart == -1) {
 451					lineTextStart = i;
 452				}
 453				if (current == '\n') {
 454					body.delete(lineStart, lineTextStart);
 455					i -= lineTextStart - lineStart;
 456					if (i == lineStart) {
 457						// Avoid empty lines because span over empty line can be hidden
 458						body.insert(i++, " ");
 459					}
 460					lineStart = -1;
 461					lineTextStart = -1;
 462				}
 463			}
 464			previous = current;
 465		}
 466		if (quoteStart >= 0) {
 467			// Apply spans to finishing open quote
 468			applyQuoteSpan(body, quoteStart, body.length(), darkBackground);
 469		}
 470		return startsWithQuote;
 471	}
 472
 473	private void displayTextMessage(final ViewHolder viewHolder, final Message message, boolean darkBackground, int type) {
 474		viewHolder.download_button.setVisibility(View.GONE);
 475		viewHolder.image.setVisibility(View.GONE);
 476		viewHolder.audioPlayer.setVisibility(View.GONE);
 477		viewHolder.messageBody.setVisibility(View.VISIBLE);
 478
 479		if (darkBackground) {
 480			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_OnDark);
 481		} else {
 482			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1);
 483		}
 484		viewHolder.messageBody.setHighlightColor(ContextCompat.getColor(activity, darkBackground
 485				? (type == SENT || !mUseGreenBackground ? R.color.black26 : R.color.grey800) : R.color.grey500));
 486		viewHolder.messageBody.setTypeface(null, Typeface.NORMAL);
 487
 488		if (message.getBody() != null) {
 489			final String nick = UIHelper.getMessageDisplayName(message);
 490			SpannableStringBuilder body = message.getMergedBody();
 491			boolean hasMeCommand = message.hasMeCommand();
 492			if (hasMeCommand) {
 493				body = body.replace(0, Message.ME_COMMAND.length(), nick + " ");
 494			}
 495			if (body.length() > Config.MAX_DISPLAY_MESSAGE_CHARS) {
 496				body = new SpannableStringBuilder(body, 0, Config.MAX_DISPLAY_MESSAGE_CHARS);
 497				body.append("\u2026");
 498			}
 499			Message.MergeSeparator[] mergeSeparators = body.getSpans(0, body.length(), Message.MergeSeparator.class);
 500			for (Message.MergeSeparator mergeSeparator : mergeSeparators) {
 501				int start = body.getSpanStart(mergeSeparator);
 502				int end = body.getSpanEnd(mergeSeparator);
 503				body.setSpan(new DividerSpan(true), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 504			}
 505			boolean startsWithQuote = handleTextQuotes(body, darkBackground);
 506			if (message.getType() != Message.TYPE_PRIVATE) {
 507				if (hasMeCommand) {
 508					body.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), 0, nick.length(),
 509							Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 510				}
 511			} else {
 512				String privateMarker;
 513				if (message.getStatus() <= Message.STATUS_RECEIVED) {
 514					privateMarker = activity.getString(R.string.private_message);
 515				} else {
 516					final String to;
 517					if (message.getCounterpart() != null) {
 518						to = message.getCounterpart().getResource();
 519					} else {
 520						to = "";
 521					}
 522					privateMarker = activity.getString(R.string.private_message_to, to);
 523				}
 524				body.insert(0, privateMarker);
 525				int privateMarkerIndex = privateMarker.length();
 526				if (startsWithQuote) {
 527					body.insert(privateMarkerIndex, "\n\n");
 528					body.setSpan(new DividerSpan(false), privateMarkerIndex, privateMarkerIndex + 2,
 529							Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 530				} else {
 531					body.insert(privateMarkerIndex, " ");
 532				}
 533				body.setSpan(new ForegroundColorSpan(getMessageTextColor(darkBackground, false)), 0, privateMarkerIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 534				body.setSpan(new StyleSpan(Typeface.BOLD), 0, privateMarkerIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 535				if (hasMeCommand) {
 536					body.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), privateMarkerIndex + 1,
 537							privateMarkerIndex + 1 + nick.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 538				}
 539			}
 540			if (message.getConversation().getMode() == Conversation.MODE_MULTI && message.getStatus() == Message.STATUS_RECEIVED) {
 541				Pattern pattern = NotificationService.generateNickHighlightPattern(message.getConversation().getMucOptions().getActualNick());
 542				Matcher matcher = pattern.matcher(body);
 543				while (matcher.find()) {
 544					body.setSpan(new StyleSpan(Typeface.BOLD), matcher.start(), matcher.end(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 545				}
 546			}
 547			Matcher matcher = Emoticons.generatePattern(body).matcher(body);
 548			while (matcher.find()) {
 549				if (matcher.start() < matcher.end()) {
 550					body.setSpan(new RelativeSizeSpan(1.2f), matcher.start(), matcher.end(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 551				}
 552			}
 553
 554			StylingHelper.format(body, viewHolder.messageBody.getCurrentTextColor());
 555
 556			Linkify.addLinks(body, XMPP_PATTERN, "xmpp", XMPPURI_MATCH_FILTER, null);
 557			Linkify.addLinks(body, Patterns.AUTOLINK_WEB_URL, "http", WEBURL_MATCH_FILTER, WEBURL_TRANSFORM_FILTER);
 558			Linkify.addLinks(body, GeoHelper.GEO_URI, "geo");
 559			FixedURLSpan.fix(body);
 560			viewHolder.messageBody.setAutoLinkMask(0);
 561			viewHolder.messageBody.setText(EmojiWrapper.transform(body));
 562			viewHolder.messageBody.setTextIsSelectable(true);
 563			viewHolder.messageBody.setMovementMethod(ClickableMovementMethod.getInstance());
 564			listSelectionManager.onUpdate(viewHolder.messageBody, message);
 565		} else {
 566			viewHolder.messageBody.setText("");
 567			viewHolder.messageBody.setTextIsSelectable(false);
 568		}
 569	}
 570
 571	private void displayDownloadableMessage(ViewHolder viewHolder, final Message message, String text) {
 572		viewHolder.image.setVisibility(View.GONE);
 573		viewHolder.messageBody.setVisibility(View.GONE);
 574		viewHolder.audioPlayer.setVisibility(View.GONE);
 575		viewHolder.download_button.setVisibility(View.VISIBLE);
 576		viewHolder.download_button.setText(text);
 577		viewHolder.download_button.setOnClickListener(v -> ConversationFragment.downloadFile(activity, message));
 578	}
 579
 580	private void displayOpenableMessage(ViewHolder viewHolder, final Message message) {
 581		viewHolder.image.setVisibility(View.GONE);
 582		viewHolder.messageBody.setVisibility(View.GONE);
 583		viewHolder.audioPlayer.setVisibility(View.GONE);
 584		viewHolder.download_button.setVisibility(View.VISIBLE);
 585		viewHolder.download_button.setText(activity.getString(R.string.open_x_file, UIHelper.getFileDescriptionString(activity, message)));
 586		viewHolder.download_button.setOnClickListener(v -> openDownloadable(message));
 587	}
 588
 589	private void displayLocationMessage(ViewHolder viewHolder, final Message message) {
 590		viewHolder.image.setVisibility(View.GONE);
 591		viewHolder.messageBody.setVisibility(View.GONE);
 592		viewHolder.audioPlayer.setVisibility(View.GONE);
 593		viewHolder.download_button.setVisibility(View.VISIBLE);
 594		viewHolder.download_button.setText(R.string.show_location);
 595		viewHolder.download_button.setOnClickListener(v -> showLocation(message));
 596	}
 597
 598	private void displayAudioMessage(ViewHolder viewHolder, Message message, boolean darkBackground) {
 599		viewHolder.image.setVisibility(View.GONE);
 600		viewHolder.messageBody.setVisibility(View.GONE);
 601		viewHolder.download_button.setVisibility(View.GONE);
 602		final RelativeLayout audioPlayer = viewHolder.audioPlayer;
 603		audioPlayer.setVisibility(View.VISIBLE);
 604		AudioPlayer.ViewHolder.get(audioPlayer).setDarkBackground(darkBackground);
 605		this.audioPlayer.init(audioPlayer, message);
 606	}
 607
 608	private void displayImageMessage(ViewHolder viewHolder, final Message message) {
 609		viewHolder.download_button.setVisibility(View.GONE);
 610		viewHolder.messageBody.setVisibility(View.GONE);
 611		viewHolder.audioPlayer.setVisibility(View.GONE);
 612		viewHolder.image.setVisibility(View.VISIBLE);
 613		FileParams params = message.getFileParams();
 614		double target = metrics.density * 288;
 615		int scaledW;
 616		int scaledH;
 617		if (Math.max(params.height, params.width) * metrics.density <= target) {
 618			scaledW = (int) (params.width * metrics.density);
 619			scaledH = (int) (params.height * metrics.density);
 620		} else if (Math.max(params.height, params.width) <= target) {
 621			scaledW = params.width;
 622			scaledH = params.height;
 623		} else if (params.width <= params.height) {
 624			scaledW = (int) (params.width / ((double) params.height / target));
 625			scaledH = (int) target;
 626		} else {
 627			scaledW = (int) target;
 628			scaledH = (int) (params.height / ((double) params.width / target));
 629		}
 630		LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(scaledW, scaledH);
 631		layoutParams.setMargins(0, (int) (metrics.density * 4), 0, (int) (metrics.density * 4));
 632		viewHolder.image.setLayoutParams(layoutParams);
 633		activity.loadBitmap(message, viewHolder.image);
 634		viewHolder.image.setOnClickListener(v -> openDownloadable(message));
 635	}
 636
 637	private void loadMoreMessages(Conversation conversation) {
 638		conversation.setLastClearHistory(0, null);
 639		activity.xmppConnectionService.updateConversation(conversation);
 640		conversation.setHasMessagesLeftOnServer(true);
 641		conversation.setFirstMamReference(null);
 642		long timestamp = conversation.getLastMessageTransmitted().getTimestamp();
 643		if (timestamp == 0) {
 644			timestamp = System.currentTimeMillis();
 645		}
 646		conversation.messagesLoaded.set(true);
 647		MessageArchiveService.Query query = activity.xmppConnectionService.getMessageArchiveService().query(conversation, new MamReference(0), timestamp, false);
 648		if (query != null) {
 649			Toast.makeText(activity, R.string.fetching_history_from_server, Toast.LENGTH_LONG).show();
 650		} else {
 651			Toast.makeText(activity, R.string.not_fetching_history_retention_period, Toast.LENGTH_SHORT).show();
 652		}
 653	}
 654
 655	@Override
 656	public View getView(int position, View view, ViewGroup parent) {
 657		final Message message = getItem(position);
 658		final boolean omemoEncryption = message.getEncryption() == Message.ENCRYPTION_AXOLOTL;
 659		final boolean isInValidSession = message.isValidInSession() && (!omemoEncryption || message.isTrusted());
 660		final Conversation conversation = message.getConversation();
 661		final Account account = conversation.getAccount();
 662		final int type = getItemViewType(position);
 663		ViewHolder viewHolder;
 664		if (view == null) {
 665			viewHolder = new ViewHolder();
 666			switch (type) {
 667				case DATE_SEPARATOR:
 668					view = activity.getLayoutInflater().inflate(R.layout.message_date_bubble, parent, false);
 669					viewHolder.status_message = view.findViewById(R.id.message_body);
 670					viewHolder.message_box = view.findViewById(R.id.message_box);
 671					break;
 672				case SENT:
 673					view = activity.getLayoutInflater().inflate(R.layout.message_sent, parent, false);
 674					viewHolder.message_box = view.findViewById(R.id.message_box);
 675					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 676					viewHolder.download_button = view.findViewById(R.id.download_button);
 677					viewHolder.indicator = view.findViewById(R.id.security_indicator);
 678					viewHolder.edit_indicator = view.findViewById(R.id.edit_indicator);
 679					viewHolder.image = view.findViewById(R.id.message_image);
 680					viewHolder.messageBody = view.findViewById(R.id.message_body);
 681					viewHolder.time = view.findViewById(R.id.message_time);
 682					viewHolder.indicatorReceived = view.findViewById(R.id.indicator_received);
 683					viewHolder.audioPlayer = view.findViewById(R.id.audio_player);
 684					break;
 685				case RECEIVED:
 686					view = activity.getLayoutInflater().inflate(R.layout.message_received, parent, false);
 687					viewHolder.message_box = view.findViewById(R.id.message_box);
 688					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 689					viewHolder.download_button = view.findViewById(R.id.download_button);
 690					viewHolder.indicator = view.findViewById(R.id.security_indicator);
 691					viewHolder.edit_indicator = view.findViewById(R.id.edit_indicator);
 692					viewHolder.image = view.findViewById(R.id.message_image);
 693					viewHolder.messageBody = view.findViewById(R.id.message_body);
 694					viewHolder.time = view.findViewById(R.id.message_time);
 695					viewHolder.indicatorReceived = view.findViewById(R.id.indicator_received);
 696					viewHolder.encryption = view.findViewById(R.id.message_encryption);
 697					viewHolder.audioPlayer = view.findViewById(R.id.audio_player);
 698					break;
 699				case STATUS:
 700					view = activity.getLayoutInflater().inflate(R.layout.message_status, parent, false);
 701					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 702					viewHolder.status_message = view.findViewById(R.id.status_message);
 703					viewHolder.load_more_messages = view.findViewById(R.id.load_more_messages);
 704					break;
 705				default:
 706					throw new AssertionError("Unknown view type");
 707			}
 708			if (viewHolder.messageBody != null) {
 709				listSelectionManager.onCreate(viewHolder.messageBody,
 710						new MessageBodyActionModeCallback(viewHolder.messageBody));
 711				viewHolder.messageBody.setCopyHandler(this);
 712			}
 713			view.setTag(viewHolder);
 714		} else {
 715			viewHolder = (ViewHolder) view.getTag();
 716			if (viewHolder == null) {
 717				return view;
 718			}
 719		}
 720
 721		boolean darkBackground = type == RECEIVED && (!isInValidSession || mUseGreenBackground) || activity.isDarkTheme();
 722
 723		if (type == DATE_SEPARATOR) {
 724			if (UIHelper.today(message.getTimeSent())) {
 725				viewHolder.status_message.setText(R.string.today);
 726			} else if (UIHelper.yesterday(message.getTimeSent())) {
 727				viewHolder.status_message.setText(R.string.yesterday);
 728			} else {
 729				viewHolder.status_message.setText(DateUtils.formatDateTime(activity, message.getTimeSent(), DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_SHOW_YEAR));
 730			}
 731			viewHolder.message_box.setBackgroundResource(activity.isDarkTheme() ? R.drawable.date_bubble_grey : R.drawable.date_bubble_white);
 732			return view;
 733		} else if (type == STATUS) {
 734			if ("LOAD_MORE".equals(message.getBody())) {
 735				viewHolder.status_message.setVisibility(View.GONE);
 736				viewHolder.contact_picture.setVisibility(View.GONE);
 737				viewHolder.load_more_messages.setVisibility(View.VISIBLE);
 738				viewHolder.load_more_messages.setOnClickListener(v -> loadMoreMessages(message.getConversation()));
 739			} else {
 740				viewHolder.status_message.setVisibility(View.VISIBLE);
 741				viewHolder.load_more_messages.setVisibility(View.GONE);
 742				viewHolder.status_message.setText(message.getBody());
 743				boolean showAvatar;
 744				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 745					showAvatar = true;
 746					loadAvatar(message, viewHolder.contact_picture, activity.getPixel(32));
 747				} else if (message.getCounterpart() != null || message.getTrueCounterpart() != null || (message.getCounterparts() != null && message.getCounterparts().size() > 0)) {
 748					showAvatar = true;
 749					loadAvatar(message, viewHolder.contact_picture, activity.getPixel(32));
 750				} else {
 751					showAvatar = false;
 752				}
 753				if (showAvatar) {
 754					viewHolder.contact_picture.setAlpha(0.5f);
 755					viewHolder.contact_picture.setVisibility(View.VISIBLE);
 756				} else {
 757					viewHolder.contact_picture.setVisibility(View.GONE);
 758				}
 759			}
 760			return view;
 761		} else {
 762			loadAvatar(message, viewHolder.contact_picture, activity.getPixel(48));
 763		}
 764
 765		viewHolder.contact_picture.setOnClickListener(v -> {
 766			if (MessageAdapter.this.mOnContactPictureClickedListener != null) {
 767				MessageAdapter.this.mOnContactPictureClickedListener
 768						.onContactPictureClicked(message);
 769			}
 770
 771		});
 772		viewHolder.contact_picture.setOnLongClickListener(v -> {
 773			if (MessageAdapter.this.mOnContactPictureLongClickedListener != null) {
 774				MessageAdapter.this.mOnContactPictureLongClickedListener
 775						.onContactPictureLongClicked(message);
 776				return true;
 777			} else {
 778				return false;
 779			}
 780		});
 781
 782		final Transferable transferable = message.getTransferable();
 783		if (transferable != null && transferable.getStatus() != Transferable.STATUS_UPLOADING) {
 784			if (transferable.getStatus() == Transferable.STATUS_OFFER) {
 785				displayDownloadableMessage(viewHolder, message, activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, message)));
 786			} else if (transferable.getStatus() == Transferable.STATUS_OFFER_CHECK_FILESIZE) {
 787				displayDownloadableMessage(viewHolder, message, activity.getString(R.string.check_x_filesize, UIHelper.getFileDescriptionString(activity, message)));
 788			} else {
 789				displayInfoMessage(viewHolder, UIHelper.getMessagePreview(activity, message).first, darkBackground);
 790			}
 791		} else if (message.getType() == Message.TYPE_IMAGE && message.getEncryption() != Message.ENCRYPTION_PGP && message.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED) {
 792			displayImageMessage(viewHolder, message);
 793		} else if (message.getType() == Message.TYPE_FILE && message.getEncryption() != Message.ENCRYPTION_PGP && message.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED) {
 794			if (message.getFileParams().width > 0 && message.getFileParams().height > 0) {
 795				displayImageMessage(viewHolder, message);
 796			} else if (message.getFileParams().runtime > 0) {
 797				displayAudioMessage(viewHolder, message, darkBackground);
 798			} else {
 799				displayOpenableMessage(viewHolder, message);
 800			}
 801		} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 802			if (account.isPgpDecryptionServiceConnected()) {
 803				if (!account.hasPendingPgpIntent(conversation)) {
 804					displayInfoMessage(viewHolder, activity.getString(R.string.message_decrypting), darkBackground);
 805				} else {
 806					displayInfoMessage(viewHolder, activity.getString(R.string.pgp_message), darkBackground);
 807				}
 808			} else {
 809				displayInfoMessage(viewHolder, activity.getString(R.string.install_openkeychain), darkBackground);
 810				viewHolder.message_box.setOnClickListener(new OnClickListener() {
 811
 812					@Override
 813					public void onClick(View v) {
 814						activity.showInstallPgpDialog();
 815					}
 816				});
 817			}
 818		} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
 819			displayDecryptionFailed(viewHolder, darkBackground);
 820		} else {
 821			if (message.isGeoUri()) {
 822				displayLocationMessage(viewHolder, message);
 823			} else if (message.bodyIsOnlyEmojis() && message.getType() != Message.TYPE_PRIVATE) {
 824				displayEmojiMessage(viewHolder, message.getBody().trim());
 825			} else if (message.treatAsDownloadable()) {
 826				try {
 827					URL url = new URL(message.getBody());
 828					displayDownloadableMessage(viewHolder,
 829							message,
 830							activity.getString(R.string.check_x_filesize_on_host,
 831									UIHelper.getFileDescriptionString(activity, message),
 832									url.getHost()));
 833				} catch (Exception e) {
 834					displayDownloadableMessage(viewHolder,
 835							message,
 836							activity.getString(R.string.check_x_filesize,
 837									UIHelper.getFileDescriptionString(activity, message)));
 838				}
 839			} else {
 840				displayTextMessage(viewHolder, message, darkBackground, type);
 841			}
 842		}
 843
 844		if (type == RECEIVED) {
 845			if (isInValidSession) {
 846				int bubble;
 847				if (!mUseGreenBackground) {
 848					bubble = activity.getThemeResource(R.attr.message_bubble_received_monochrome, R.drawable.message_bubble_received_white);
 849				} else {
 850					bubble = activity.getThemeResource(R.attr.message_bubble_received_green, R.drawable.message_bubble_received);
 851				}
 852				viewHolder.message_box.setBackgroundResource(bubble);
 853				viewHolder.encryption.setVisibility(View.GONE);
 854			} else {
 855				viewHolder.message_box.setBackgroundResource(R.drawable.message_bubble_received_warning);
 856				viewHolder.encryption.setVisibility(View.VISIBLE);
 857				if (omemoEncryption && !message.isTrusted()) {
 858					viewHolder.encryption.setText(R.string.not_trusted);
 859				} else {
 860					viewHolder.encryption.setText(CryptoHelper.encryptionTypeToText(message.getEncryption()));
 861				}
 862			}
 863		}
 864
 865		displayStatus(viewHolder, message, type, darkBackground);
 866
 867		return view;
 868	}
 869
 870	@Override
 871	public void notifyDataSetChanged() {
 872		listSelectionManager.onBeforeNotifyDataSetChanged();
 873		super.notifyDataSetChanged();
 874		listSelectionManager.onAfterNotifyDataSetChanged();
 875	}
 876
 877	private String transformText(CharSequence text, int start, int end, boolean forCopy) {
 878		SpannableStringBuilder builder = new SpannableStringBuilder(text);
 879		Object copySpan = new Object();
 880		builder.setSpan(copySpan, start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 881		DividerSpan[] dividerSpans = builder.getSpans(0, builder.length(), DividerSpan.class);
 882		for (DividerSpan dividerSpan : dividerSpans) {
 883			builder.replace(builder.getSpanStart(dividerSpan), builder.getSpanEnd(dividerSpan),
 884					dividerSpan.isLarge() ? "\n\n" : "\n");
 885		}
 886		start = builder.getSpanStart(copySpan);
 887		end = builder.getSpanEnd(copySpan);
 888		if (start == -1 || end == -1) return "";
 889		builder = new SpannableStringBuilder(builder, start, end);
 890		if (forCopy) {
 891			QuoteSpan[] quoteSpans = builder.getSpans(0, builder.length(), QuoteSpan.class);
 892			for (QuoteSpan quoteSpan : quoteSpans) {
 893				builder.insert(builder.getSpanStart(quoteSpan), "> ");
 894			}
 895		}
 896		return builder.toString();
 897	}
 898
 899	@Override
 900	public String transformTextForCopy(CharSequence text, int start, int end) {
 901		if (text instanceof Spanned) {
 902			return transformText(text, start, end, true);
 903		} else {
 904			return text.toString().substring(start, end);
 905		}
 906	}
 907
 908	public FileBackend getFileBackend() {
 909		return activity.xmppConnectionService.getFileBackend();
 910	}
 911
 912	public void stopAudioPlayer() {
 913		audioPlayer.stop();
 914	}
 915
 916	public void startStopPending() {
 917		audioPlayer.startStopPending();
 918	}
 919
 920	public void openDownloadable(Message message) {
 921		if (ContextCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
 922			ConversationFragment.registerPendingMessage(activity, message);
 923			ActivityCompat.requestPermissions(activity, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, ConversationsActivity.REQUEST_OPEN_MESSAGE);
 924			return;
 925		}
 926		DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
 927		if (!file.exists()) {
 928			Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
 929			return;
 930		}
 931		Intent openIntent = new Intent(Intent.ACTION_VIEW);
 932		String mime = file.getMimeType();
 933		if (mime == null) {
 934			mime = "*/*";
 935		}
 936		Uri uri;
 937		try {
 938			uri = FileBackend.getUriForFile(activity, file);
 939		} catch (SecurityException e) {
 940			Log.d(Config.LOGTAG, "No permission to access " + file.getAbsolutePath(), e);
 941			Toast.makeText(activity, activity.getString(R.string.no_permission_to_access_x, file.getAbsolutePath()), Toast.LENGTH_SHORT).show();
 942			return;
 943		}
 944		openIntent.setDataAndType(uri, mime);
 945		openIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
 946		PackageManager manager = activity.getPackageManager();
 947		List<ResolveInfo> info = manager.queryIntentActivities(openIntent, 0);
 948		if (info.size() == 0) {
 949			openIntent.setDataAndType(uri, "*/*");
 950		}
 951		try {
 952			getContext().startActivity(openIntent);
 953		} catch (ActivityNotFoundException e) {
 954			Toast.makeText(activity, R.string.no_application_found_to_open_file, Toast.LENGTH_SHORT).show();
 955		}
 956	}
 957
 958	public void showLocation(Message message) {
 959		for (Intent intent : GeoHelper.createGeoIntentsFromMessage(message)) {
 960			if (intent.resolveActivity(getContext().getPackageManager()) != null) {
 961				getContext().startActivity(intent);
 962				return;
 963			}
 964		}
 965		Toast.makeText(activity, R.string.no_application_found_to_display_location, Toast.LENGTH_SHORT).show();
 966	}
 967
 968	public void updatePreferences() {
 969		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
 970		this.mIndicateReceived = p.getBoolean("indicate_received", activity.getResources().getBoolean(R.bool.indicate_received));
 971		this.mUseGreenBackground = p.getBoolean("use_green_background", activity.getResources().getBoolean(R.bool.use_green_background));
 972	}
 973
 974	public void loadAvatar(Message message, ImageView imageView, int size) {
 975		if (cancelPotentialWork(message, imageView)) {
 976			final Bitmap bm = activity.avatarService().get(message, size, true);
 977			if (bm != null) {
 978				cancelPotentialWork(message, imageView);
 979				imageView.setImageBitmap(bm);
 980				imageView.setBackgroundColor(Color.TRANSPARENT);
 981			} else {
 982				@ColorInt int bg;
 983				if (message.getType() == Message.TYPE_STATUS && message.getCounterparts() != null && message.getCounterparts().size() > 1) {
 984					bg = Color.TRANSPARENT;
 985				} else {
 986					bg = UIHelper.getColorForName(UIHelper.getMessageDisplayName(message));
 987				}
 988				imageView.setBackgroundColor(bg);
 989				imageView.setImageDrawable(null);
 990				final BitmapWorkerTask task = new BitmapWorkerTask(imageView, size);
 991				final AsyncDrawable asyncDrawable = new AsyncDrawable(activity.getResources(), null, task);
 992				imageView.setImageDrawable(asyncDrawable);
 993				try {
 994					task.execute(message);
 995				} catch (final RejectedExecutionException ignored) {
 996				}
 997			}
 998		}
 999	}
1000
1001	public interface OnQuoteListener {
1002		void onQuote(String text);
1003	}
1004
1005	public interface OnContactPictureClicked {
1006		void onContactPictureClicked(Message message);
1007	}
1008
1009	public interface OnContactPictureLongClicked {
1010		void onContactPictureLongClicked(Message message);
1011	}
1012
1013	private static class ViewHolder {
1014
1015		public Button load_more_messages;
1016		public ImageView edit_indicator;
1017		public RelativeLayout audioPlayer;
1018		protected LinearLayout message_box;
1019		protected Button download_button;
1020		protected ImageView image;
1021		protected ImageView indicator;
1022		protected ImageView indicatorReceived;
1023		protected TextView time;
1024		protected CopyTextView messageBody;
1025		protected ImageView contact_picture;
1026		protected TextView status_message;
1027		protected TextView encryption;
1028	}
1029
1030	static class AsyncDrawable extends BitmapDrawable {
1031		private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
1032
1033		public AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
1034			super(res, bitmap);
1035			bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
1036		}
1037
1038		public BitmapWorkerTask getBitmapWorkerTask() {
1039			return bitmapWorkerTaskReference.get();
1040		}
1041	}
1042
1043	private class MessageBodyActionModeCallback implements ActionMode.Callback {
1044
1045		private final TextView textView;
1046
1047		public MessageBodyActionModeCallback(TextView textView) {
1048			this.textView = textView;
1049		}
1050
1051		@Override
1052		public boolean onCreateActionMode(ActionMode mode, Menu menu) {
1053			if (onQuoteListener != null) {
1054				int quoteResId = activity.getThemeResource(R.attr.icon_quote, R.drawable.ic_action_reply);
1055				// 3rd item is placed after "copy" item
1056				menu.add(0, android.R.id.button1, 3, R.string.quote).setIcon(quoteResId)
1057						.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
1058			}
1059			return false;
1060		}
1061
1062		@Override
1063		public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
1064			return false;
1065		}
1066
1067		@Override
1068		public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
1069			if (item.getItemId() == android.R.id.button1) {
1070				int start = textView.getSelectionStart();
1071				int end = textView.getSelectionEnd();
1072				if (end > start) {
1073					String text = transformText(textView.getText(), start, end, false);
1074					if (onQuoteListener != null) {
1075						onQuoteListener.onQuote(text);
1076					}
1077					mode.finish();
1078				}
1079				return true;
1080			}
1081			return false;
1082		}
1083
1084		@Override
1085		public void onDestroyActionMode(ActionMode mode) {
1086		}
1087	}
1088
1089	class BitmapWorkerTask extends AsyncTask<Message, Void, Bitmap> {
1090		private final WeakReference<ImageView> imageViewReference;
1091		private final int size;
1092		private Message message = null;
1093
1094		public BitmapWorkerTask(ImageView imageView, int size) {
1095			imageViewReference = new WeakReference<>(imageView);
1096			this.size = size;
1097		}
1098
1099		@Override
1100		protected Bitmap doInBackground(Message... params) {
1101			this.message = params[0];
1102			return activity.avatarService().get(this.message, size, isCancelled());
1103		}
1104
1105		@Override
1106		protected void onPostExecute(Bitmap bitmap) {
1107			if (bitmap != null && !isCancelled()) {
1108				final ImageView imageView = imageViewReference.get();
1109				if (imageView != null) {
1110					imageView.setImageBitmap(bitmap);
1111					imageView.setBackgroundColor(0x00000000);
1112				}
1113			}
1114		}
1115	}
1116}