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.ViewGroup;
  38import android.view.WindowManager;
  39import android.widget.ArrayAdapter;
  40import android.widget.Button;
  41import android.widget.ImageView;
  42import android.widget.LinearLayout;
  43import android.widget.RelativeLayout;
  44import android.widget.TextView;
  45import android.widget.Toast;
  46
  47import java.lang.ref.WeakReference;
  48import java.net.URL;
  49import java.util.List;
  50import java.util.Locale;
  51import java.util.concurrent.RejectedExecutionException;
  52import java.util.regex.Matcher;
  53import java.util.regex.Pattern;
  54
  55import eu.siacs.conversations.Config;
  56import eu.siacs.conversations.R;
  57import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  58import eu.siacs.conversations.entities.Account;
  59import eu.siacs.conversations.entities.Conversation;
  60import eu.siacs.conversations.entities.Conversational;
  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
  96	private List<String> highlightedTerm = null;
  97
  98	private static final Linkify.TransformFilter WEBURL_TRANSFORM_FILTER = (matcher, url) -> {
  99		if (url == null) {
 100			return null;
 101		}
 102		final String lcUrl = url.toLowerCase(Locale.US);
 103		if (lcUrl.startsWith("http://") || lcUrl.startsWith("https://")) {
 104			return removeTrailingBracket(url);
 105		} else {
 106			return "http://" + removeTrailingBracket(url);
 107		}
 108	};
 109
 110	private static String removeTrailingBracket(final String url) {
 111		int numOpenBrackets = 0;
 112		for (char c : url.toCharArray()) {
 113			if (c == '(') {
 114				++numOpenBrackets;
 115			} else if (c == ')') {
 116				--numOpenBrackets;
 117			}
 118		}
 119		if (numOpenBrackets != 0 && url.charAt(url.length() - 1) == ')') {
 120			return url.substring(0, url.length() - 1);
 121		} else {
 122			return url;
 123		}
 124	}
 125
 126	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("://"));
 127
 128	private static final Linkify.MatchFilter XMPPURI_MATCH_FILTER = (s, start, end) -> {
 129		XmppUri uri = new XmppUri(s.subSequence(start, end).toString());
 130		return uri.isJidValid();
 131	};
 132
 133	private final XmppActivity activity;
 134	private final ListSelectionManager listSelectionManager = new ListSelectionManager();
 135	private final AudioPlayer audioPlayer;
 136	private DisplayMetrics metrics;
 137	private OnContactPictureClicked mOnContactPictureClickedListener;
 138	private OnContactPictureLongClicked mOnContactPictureLongClickedListener;
 139	private boolean mIndicateReceived = false;
 140	private boolean mUseGreenBackground = false;
 141	private OnQuoteListener onQuoteListener;
 142
 143	public MessageAdapter(XmppActivity activity, List<Message> messages) {
 144		super(activity, 0, messages);
 145		this.audioPlayer = new AudioPlayer(this);
 146		this.activity = activity;
 147		metrics = getContext().getResources().getDisplayMetrics();
 148		updatePreferences();
 149	}
 150
 151	public static boolean cancelPotentialWork(Message message, ImageView imageView) {
 152		final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
 153
 154		if (bitmapWorkerTask != null) {
 155			final Message oldMessage = bitmapWorkerTask.message;
 156			if (oldMessage == null || message != oldMessage) {
 157				bitmapWorkerTask.cancel(true);
 158			} else {
 159				return false;
 160			}
 161		}
 162		return true;
 163	}
 164
 165	private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
 166		if (imageView != null) {
 167			final Drawable drawable = imageView.getDrawable();
 168			if (drawable instanceof AsyncDrawable) {
 169				final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
 170				return asyncDrawable.getBitmapWorkerTask();
 171			}
 172		}
 173		return null;
 174	}
 175
 176	public void flagScreenOn() {
 177		activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
 178	}
 179
 180	public void flagScreenOff() {
 181		activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
 182	}
 183
 184	public void setOnContactPictureClicked(OnContactPictureClicked listener) {
 185		this.mOnContactPictureClickedListener = listener;
 186	}
 187
 188	public Activity getActivity() {
 189		return activity;
 190	}
 191
 192	public void setOnContactPictureLongClicked(
 193			OnContactPictureLongClicked listener) {
 194		this.mOnContactPictureLongClickedListener = listener;
 195	}
 196
 197	public void setOnQuoteListener(OnQuoteListener listener) {
 198		this.onQuoteListener = listener;
 199	}
 200
 201	@Override
 202	public int getViewTypeCount() {
 203		return 4;
 204	}
 205
 206	public int getItemViewType(Message message) {
 207		if (message.getType() == Message.TYPE_STATUS) {
 208			if (DATE_SEPARATOR_BODY.equals(message.getBody())) {
 209				return DATE_SEPARATOR;
 210			} else {
 211				return STATUS;
 212			}
 213		} else if (message.getStatus() <= Message.STATUS_RECEIVED) {
 214			return RECEIVED;
 215		}
 216
 217		return SENT;
 218	}
 219
 220	@Override
 221	public int getItemViewType(int position) {
 222		return this.getItemViewType(getItem(position));
 223	}
 224
 225	public int getMessageTextColor(boolean onDark, boolean primary) {
 226		if (onDark) {
 227			return ContextCompat.getColor(activity, primary ? R.color.white : R.color.white70);
 228		} else {
 229			return ContextCompat.getColor(activity, primary ? R.color.black87 : R.color.black54);
 230		}
 231	}
 232
 233	private void displayStatus(ViewHolder viewHolder, Message message, int type, boolean darkBackground) {
 234		String filesize = null;
 235		String info = null;
 236		boolean error = false;
 237		if (viewHolder.indicatorReceived != null) {
 238			viewHolder.indicatorReceived.setVisibility(View.GONE);
 239		}
 240
 241		if (viewHolder.edit_indicator != null) {
 242			if (message.edited()) {
 243				viewHolder.edit_indicator.setVisibility(View.VISIBLE);
 244				viewHolder.edit_indicator.setImageResource(darkBackground ? R.drawable.ic_mode_edit_white_18dp : R.drawable.ic_mode_edit_black_18dp);
 245				viewHolder.edit_indicator.setAlpha(darkBackground ? 0.7f : 0.57f);
 246			} else {
 247				viewHolder.edit_indicator.setVisibility(View.GONE);
 248			}
 249		}
 250		boolean multiReceived = message.getConversation().getMode() == Conversation.MODE_MULTI
 251				&& message.getMergedStatus() <= Message.STATUS_RECEIVED;
 252		if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE || message.getTransferable() != null) {
 253			FileParams params = message.getFileParams();
 254			if (params.size > (1.5 * 1024 * 1024)) {
 255				filesize = Math.round(params.size * 1f / (1024 * 1024)) + " MiB";
 256			} else if (params.size >= 1024) {
 257				filesize = Math.round(params.size * 1f / 1024) + " KiB";
 258			} else if (params.size > 0) {
 259				filesize = params.size + " B";
 260			}
 261			if (message.getTransferable() != null && message.getTransferable().getStatus() == Transferable.STATUS_FAILED) {
 262				error = true;
 263			}
 264		}
 265		switch (message.getMergedStatus()) {
 266			case Message.STATUS_WAITING:
 267				info = getContext().getString(R.string.waiting);
 268				break;
 269			case Message.STATUS_UNSEND:
 270				Transferable d = message.getTransferable();
 271				if (d != null) {
 272					info = getContext().getString(R.string.sending_file, d.getProgress());
 273				} else {
 274					info = getContext().getString(R.string.sending);
 275				}
 276				break;
 277			case Message.STATUS_OFFERED:
 278				info = getContext().getString(R.string.offering);
 279				break;
 280			case Message.STATUS_SEND_RECEIVED:
 281				if (mIndicateReceived) {
 282					viewHolder.indicatorReceived.setVisibility(View.VISIBLE);
 283				}
 284				break;
 285			case Message.STATUS_SEND_DISPLAYED:
 286				if (mIndicateReceived) {
 287					viewHolder.indicatorReceived.setVisibility(View.VISIBLE);
 288				}
 289				break;
 290			case Message.STATUS_SEND_FAILED:
 291				info = getContext().getString(R.string.send_failed);
 292				error = true;
 293				break;
 294			default:
 295				if (multiReceived) {
 296					info = UIHelper.getMessageDisplayName(message);
 297				}
 298				break;
 299		}
 300		if (error && type == SENT) {
 301			viewHolder.time.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Caption_Warning);
 302		} else {
 303			if (darkBackground) {
 304				viewHolder.time.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Caption_OnDark);
 305			} else {
 306				viewHolder.time.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Caption);
 307			}
 308			viewHolder.time.setTextColor(this.getMessageTextColor(darkBackground, false));
 309		}
 310		if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 311			viewHolder.indicator.setVisibility(View.GONE);
 312		} else {
 313			boolean verified = false;
 314			if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
 315				final FingerprintStatus status = message.getConversation()
 316						.getAccount().getAxolotlService().getFingerprintTrust(
 317								message.getFingerprint());
 318				if (status != null && status.isVerified()) {
 319					verified = true;
 320				}
 321			}
 322			if (verified) {
 323				viewHolder.indicator.setImageResource(darkBackground ? R.drawable.ic_verified_user_white_18dp : R.drawable.ic_verified_user_black_18dp);
 324			} else {
 325				viewHolder.indicator.setImageResource(darkBackground ? R.drawable.ic_lock_white_18dp : R.drawable.ic_lock_black_18dp);
 326			}
 327			if (darkBackground) {
 328				viewHolder.indicator.setAlpha(0.7f);
 329			} else {
 330				viewHolder.indicator.setAlpha(0.57f);
 331			}
 332			viewHolder.indicator.setVisibility(View.VISIBLE);
 333		}
 334
 335		String formatedTime = UIHelper.readableTimeDifferenceFull(getContext(), message.getMergedTimeSent());
 336		if (message.getStatus() <= Message.STATUS_RECEIVED) {
 337			if ((filesize != null) && (info != null)) {
 338				viewHolder.time.setText(formatedTime + " \u00B7 " + filesize + " \u00B7 " + info);
 339			} else if ((filesize == null) && (info != null)) {
 340				viewHolder.time.setText(formatedTime + " \u00B7 " + info);
 341			} else if ((filesize != null) && (info == null)) {
 342				viewHolder.time.setText(formatedTime + " \u00B7 " + filesize);
 343			} else {
 344				viewHolder.time.setText(formatedTime);
 345			}
 346		} else {
 347			if ((filesize != null) && (info != null)) {
 348				viewHolder.time.setText(filesize + " \u00B7 " + info);
 349			} else if ((filesize == null) && (info != null)) {
 350				if (error) {
 351					viewHolder.time.setText(info + " \u00B7 " + formatedTime);
 352				} else {
 353					viewHolder.time.setText(info);
 354				}
 355			} else if ((filesize != null) && (info == null)) {
 356				viewHolder.time.setText(filesize + " \u00B7 " + formatedTime);
 357			} else {
 358				viewHolder.time.setText(formatedTime);
 359			}
 360		}
 361	}
 362
 363	private void displayInfoMessage(ViewHolder viewHolder, CharSequence text, boolean darkBackground) {
 364		viewHolder.download_button.setVisibility(View.GONE);
 365		viewHolder.audioPlayer.setVisibility(View.GONE);
 366		viewHolder.image.setVisibility(View.GONE);
 367		viewHolder.messageBody.setVisibility(View.VISIBLE);
 368		viewHolder.messageBody.setText(text);
 369		if (darkBackground) {
 370			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Secondary_OnDark);
 371		} else {
 372			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Secondary);
 373		}
 374		viewHolder.messageBody.setTextIsSelectable(false);
 375	}
 376
 377	private void displayEmojiMessage(final ViewHolder viewHolder, final String body, final boolean darkBackground) {
 378		viewHolder.download_button.setVisibility(View.GONE);
 379		viewHolder.audioPlayer.setVisibility(View.GONE);
 380		viewHolder.image.setVisibility(View.GONE);
 381		viewHolder.messageBody.setVisibility(View.VISIBLE);
 382		if (darkBackground) {
 383			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Emoji_OnDark);
 384		} else {
 385			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Emoji);
 386		}
 387		Spannable span = new SpannableString(body);
 388		float size = Emoticons.isEmoji(body) ? 3.0f : 2.0f;
 389		span.setSpan(new RelativeSizeSpan(size), 0, body.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 390		viewHolder.messageBody.setText(EmojiWrapper.transform(span));
 391	}
 392
 393	private int applyQuoteSpan(SpannableStringBuilder body, int start, int end, boolean darkBackground) {
 394		if (start > 1 && !"\n\n".equals(body.subSequence(start - 2, start).toString())) {
 395			body.insert(start++, "\n");
 396			body.setSpan(new DividerSpan(false), start - 2, start, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 397			end++;
 398		}
 399		if (end < body.length() - 1 && !"\n\n".equals(body.subSequence(end, end + 2).toString())) {
 400			body.insert(end, "\n");
 401			body.setSpan(new DividerSpan(false), end, end + 2, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 402		}
 403		int color = darkBackground ? this.getMessageTextColor(darkBackground, false)
 404				: ContextCompat.getColor(activity, R.color.green700_desaturated);
 405		DisplayMetrics metrics = getContext().getResources().getDisplayMetrics();
 406		body.setSpan(new QuoteSpan(color, metrics), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 407		return 0;
 408	}
 409
 410	/**
 411	 * Applies QuoteSpan to group of lines which starts with > or » characters.
 412	 * Appends likebreaks and applies DividerSpan to them to show a padding between quote and text.
 413	 */
 414	private boolean handleTextQuotes(SpannableStringBuilder body, boolean darkBackground) {
 415		boolean startsWithQuote = false;
 416		char previous = '\n';
 417		int lineStart = -1;
 418		int lineTextStart = -1;
 419		int quoteStart = -1;
 420		for (int i = 0; i <= body.length(); i++) {
 421			char current = body.length() > i ? body.charAt(i) : '\n';
 422			if (lineStart == -1) {
 423				if (previous == '\n') {
 424					if ((current == '>' && UIHelper.isPositionFollowedByQuoteableCharacter(body, i))
 425							|| current == '\u00bb' && !UIHelper.isPositionFollowedByQuote(body, i)) {
 426						// Line start with quote
 427						lineStart = i;
 428						if (quoteStart == -1) quoteStart = i;
 429						if (i == 0) startsWithQuote = true;
 430					} else if (quoteStart >= 0) {
 431						// Line start without quote, apply spans there
 432						applyQuoteSpan(body, quoteStart, i - 1, darkBackground);
 433						quoteStart = -1;
 434					}
 435				}
 436			} else {
 437				// Remove extra spaces between > and first character in the line
 438				// > character will be removed too
 439				if (current != ' ' && lineTextStart == -1) {
 440					lineTextStart = i;
 441				}
 442				if (current == '\n') {
 443					body.delete(lineStart, lineTextStart);
 444					i -= lineTextStart - lineStart;
 445					if (i == lineStart) {
 446						// Avoid empty lines because span over empty line can be hidden
 447						body.insert(i++, " ");
 448					}
 449					lineStart = -1;
 450					lineTextStart = -1;
 451				}
 452			}
 453			previous = current;
 454		}
 455		if (quoteStart >= 0) {
 456			// Apply spans to finishing open quote
 457			applyQuoteSpan(body, quoteStart, body.length(), darkBackground);
 458		}
 459		return startsWithQuote;
 460	}
 461
 462	private void displayTextMessage(final ViewHolder viewHolder, final Message message, boolean darkBackground, int type) {
 463		viewHolder.download_button.setVisibility(View.GONE);
 464		viewHolder.image.setVisibility(View.GONE);
 465		viewHolder.audioPlayer.setVisibility(View.GONE);
 466		viewHolder.messageBody.setVisibility(View.VISIBLE);
 467
 468		if (darkBackground) {
 469			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_OnDark);
 470		} else {
 471			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1);
 472		}
 473		viewHolder.messageBody.setHighlightColor(ContextCompat.getColor(activity, darkBackground
 474				? (type == SENT || !mUseGreenBackground ? R.color.black26 : R.color.grey800) : R.color.grey500));
 475		viewHolder.messageBody.setTypeface(null, Typeface.NORMAL);
 476
 477		if (message.getBody() != null) {
 478			final String nick = UIHelper.getMessageDisplayName(message);
 479			SpannableStringBuilder body = message.getMergedBody();
 480			boolean hasMeCommand = message.hasMeCommand();
 481			if (hasMeCommand) {
 482				body = body.replace(0, Message.ME_COMMAND.length(), nick + " ");
 483			}
 484			if (body.length() > Config.MAX_DISPLAY_MESSAGE_CHARS) {
 485				body = new SpannableStringBuilder(body, 0, Config.MAX_DISPLAY_MESSAGE_CHARS);
 486				body.append("\u2026");
 487			}
 488			Message.MergeSeparator[] mergeSeparators = body.getSpans(0, body.length(), Message.MergeSeparator.class);
 489			for (Message.MergeSeparator mergeSeparator : mergeSeparators) {
 490				int start = body.getSpanStart(mergeSeparator);
 491				int end = body.getSpanEnd(mergeSeparator);
 492				body.setSpan(new DividerSpan(true), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 493			}
 494			boolean startsWithQuote = handleTextQuotes(body, darkBackground);
 495			if (message.getType() != Message.TYPE_PRIVATE) {
 496				if (hasMeCommand) {
 497					body.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), 0, nick.length(),
 498							Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 499				}
 500			} else {
 501				String privateMarker;
 502				if (message.getStatus() <= Message.STATUS_RECEIVED) {
 503					privateMarker = activity.getString(R.string.private_message);
 504				} else {
 505					final String to;
 506					if (message.getCounterpart() != null) {
 507						to = message.getCounterpart().getResource();
 508					} else {
 509						to = "";
 510					}
 511					privateMarker = activity.getString(R.string.private_message_to, to);
 512				}
 513				body.insert(0, privateMarker);
 514				int privateMarkerIndex = privateMarker.length();
 515				if (startsWithQuote) {
 516					body.insert(privateMarkerIndex, "\n\n");
 517					body.setSpan(new DividerSpan(false), privateMarkerIndex, privateMarkerIndex + 2,
 518							Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 519				} else {
 520					body.insert(privateMarkerIndex, " ");
 521				}
 522				body.setSpan(new ForegroundColorSpan(getMessageTextColor(darkBackground, false)), 0, privateMarkerIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 523				body.setSpan(new StyleSpan(Typeface.BOLD), 0, privateMarkerIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 524				if (hasMeCommand) {
 525					body.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), privateMarkerIndex + 1,
 526							privateMarkerIndex + 1 + nick.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 527				}
 528			}
 529			if (message.getConversation().getMode() == Conversation.MODE_MULTI && message.getStatus() == Message.STATUS_RECEIVED) {
 530				if (message.getConversation() instanceof Conversation) {
 531					final Conversation conversation = (Conversation) message.getConversation();
 532					Pattern pattern = NotificationService.generateNickHighlightPattern(conversation.getMucOptions().getActualNick());
 533					Matcher matcher = pattern.matcher(body);
 534					while (matcher.find()) {
 535						body.setSpan(new StyleSpan(Typeface.BOLD), matcher.start(), matcher.end(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 536					}
 537				}
 538			}
 539			Matcher matcher = Emoticons.generatePattern(body).matcher(body);
 540			while (matcher.find()) {
 541				if (matcher.start() < matcher.end()) {
 542					body.setSpan(new RelativeSizeSpan(1.2f), matcher.start(), matcher.end(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 543				}
 544			}
 545
 546			StylingHelper.format(body, viewHolder.messageBody.getCurrentTextColor());
 547			if (highlightedTerm != null) {
 548				StylingHelper.highlight(activity, body, highlightedTerm, StylingHelper.isDarkText(viewHolder.messageBody));
 549			}
 550
 551			Linkify.addLinks(body, Patterns.XMPP_PATTERN, "xmpp", XMPPURI_MATCH_FILTER, null);
 552			Linkify.addLinks(body, Patterns.AUTOLINK_WEB_URL, "http", WEBURL_MATCH_FILTER, WEBURL_TRANSFORM_FILTER);
 553			Linkify.addLinks(body, GeoHelper.GEO_URI, "geo");
 554			FixedURLSpan.fix(body);
 555			viewHolder.messageBody.setAutoLinkMask(0);
 556			viewHolder.messageBody.setText(EmojiWrapper.transform(body));
 557			viewHolder.messageBody.setTextIsSelectable(true);
 558			viewHolder.messageBody.setMovementMethod(ClickableMovementMethod.getInstance());
 559			listSelectionManager.onUpdate(viewHolder.messageBody, message);
 560		} else {
 561			viewHolder.messageBody.setText("");
 562			viewHolder.messageBody.setTextIsSelectable(false);
 563		}
 564	}
 565
 566	private void displayDownloadableMessage(ViewHolder viewHolder, final Message message, String text) {
 567		viewHolder.image.setVisibility(View.GONE);
 568		viewHolder.messageBody.setVisibility(View.GONE);
 569		viewHolder.audioPlayer.setVisibility(View.GONE);
 570		viewHolder.download_button.setVisibility(View.VISIBLE);
 571		viewHolder.download_button.setText(text);
 572		viewHolder.download_button.setOnClickListener(v -> ConversationFragment.downloadFile(activity, message));
 573	}
 574
 575	private void displayOpenableMessage(ViewHolder viewHolder, final Message message) {
 576		viewHolder.image.setVisibility(View.GONE);
 577		viewHolder.messageBody.setVisibility(View.GONE);
 578		viewHolder.audioPlayer.setVisibility(View.GONE);
 579		viewHolder.download_button.setVisibility(View.VISIBLE);
 580		viewHolder.download_button.setText(activity.getString(R.string.open_x_file, UIHelper.getFileDescriptionString(activity, message)));
 581		viewHolder.download_button.setOnClickListener(v -> openDownloadable(message));
 582	}
 583
 584	private void displayLocationMessage(ViewHolder viewHolder, final Message message) {
 585		viewHolder.image.setVisibility(View.GONE);
 586		viewHolder.messageBody.setVisibility(View.GONE);
 587		viewHolder.audioPlayer.setVisibility(View.GONE);
 588		viewHolder.download_button.setVisibility(View.VISIBLE);
 589		viewHolder.download_button.setText(R.string.show_location);
 590		viewHolder.download_button.setOnClickListener(v -> showLocation(message));
 591	}
 592
 593	private void displayAudioMessage(ViewHolder viewHolder, Message message, boolean darkBackground) {
 594		viewHolder.image.setVisibility(View.GONE);
 595		viewHolder.messageBody.setVisibility(View.GONE);
 596		viewHolder.download_button.setVisibility(View.GONE);
 597		final RelativeLayout audioPlayer = viewHolder.audioPlayer;
 598		audioPlayer.setVisibility(View.VISIBLE);
 599		AudioPlayer.ViewHolder.get(audioPlayer).setDarkBackground(darkBackground);
 600		this.audioPlayer.init(audioPlayer, message);
 601	}
 602
 603	private void displayImageMessage(ViewHolder viewHolder, final Message message) {
 604		viewHolder.download_button.setVisibility(View.GONE);
 605		viewHolder.messageBody.setVisibility(View.GONE);
 606		viewHolder.audioPlayer.setVisibility(View.GONE);
 607		viewHolder.image.setVisibility(View.VISIBLE);
 608		FileParams params = message.getFileParams();
 609		double target = metrics.density * 288;
 610		int scaledW;
 611		int scaledH;
 612		if (Math.max(params.height, params.width) * metrics.density <= target) {
 613			scaledW = (int) (params.width * metrics.density);
 614			scaledH = (int) (params.height * metrics.density);
 615		} else if (Math.max(params.height, params.width) <= target) {
 616			scaledW = params.width;
 617			scaledH = params.height;
 618		} else if (params.width <= params.height) {
 619			scaledW = (int) (params.width / ((double) params.height / target));
 620			scaledH = (int) target;
 621		} else {
 622			scaledW = (int) target;
 623			scaledH = (int) (params.height / ((double) params.width / target));
 624		}
 625		LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(scaledW, scaledH);
 626		layoutParams.setMargins(0, (int) (metrics.density * 4), 0, (int) (metrics.density * 4));
 627		viewHolder.image.setLayoutParams(layoutParams);
 628		activity.loadBitmap(message, viewHolder.image);
 629		viewHolder.image.setOnClickListener(v -> openDownloadable(message));
 630	}
 631
 632	private void loadMoreMessages(Conversation conversation) {
 633		conversation.setLastClearHistory(0, null);
 634		activity.xmppConnectionService.updateConversation(conversation);
 635		conversation.setHasMessagesLeftOnServer(true);
 636		conversation.setFirstMamReference(null);
 637		long timestamp = conversation.getLastMessageTransmitted().getTimestamp();
 638		if (timestamp == 0) {
 639			timestamp = System.currentTimeMillis();
 640		}
 641		conversation.messagesLoaded.set(true);
 642		MessageArchiveService.Query query = activity.xmppConnectionService.getMessageArchiveService().query(conversation, new MamReference(0), timestamp, false);
 643		if (query != null) {
 644			Toast.makeText(activity, R.string.fetching_history_from_server, Toast.LENGTH_LONG).show();
 645		} else {
 646			Toast.makeText(activity, R.string.not_fetching_history_retention_period, Toast.LENGTH_SHORT).show();
 647		}
 648	}
 649
 650	@Override
 651	public View getView(int position, View view, ViewGroup parent) {
 652		final Message message = getItem(position);
 653		final boolean omemoEncryption = message.getEncryption() == Message.ENCRYPTION_AXOLOTL;
 654		final boolean isInValidSession = message.isValidInSession() && (!omemoEncryption || message.isTrusted());
 655		final Conversational conversation = message.getConversation();
 656		final Account account = conversation.getAccount();
 657		final int type = getItemViewType(position);
 658		ViewHolder viewHolder;
 659		if (view == null) {
 660			viewHolder = new ViewHolder();
 661			switch (type) {
 662				case DATE_SEPARATOR:
 663					view = activity.getLayoutInflater().inflate(R.layout.message_date_bubble, parent, false);
 664					viewHolder.status_message = view.findViewById(R.id.message_body);
 665					viewHolder.message_box = view.findViewById(R.id.message_box);
 666					break;
 667				case SENT:
 668					view = activity.getLayoutInflater().inflate(R.layout.message_sent, parent, false);
 669					viewHolder.message_box = view.findViewById(R.id.message_box);
 670					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 671					viewHolder.download_button = view.findViewById(R.id.download_button);
 672					viewHolder.indicator = view.findViewById(R.id.security_indicator);
 673					viewHolder.edit_indicator = view.findViewById(R.id.edit_indicator);
 674					viewHolder.image = view.findViewById(R.id.message_image);
 675					viewHolder.messageBody = view.findViewById(R.id.message_body);
 676					viewHolder.time = view.findViewById(R.id.message_time);
 677					viewHolder.indicatorReceived = view.findViewById(R.id.indicator_received);
 678					viewHolder.audioPlayer = view.findViewById(R.id.audio_player);
 679					break;
 680				case RECEIVED:
 681					view = activity.getLayoutInflater().inflate(R.layout.message_received, parent, false);
 682					viewHolder.message_box = view.findViewById(R.id.message_box);
 683					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 684					viewHolder.download_button = view.findViewById(R.id.download_button);
 685					viewHolder.indicator = view.findViewById(R.id.security_indicator);
 686					viewHolder.edit_indicator = view.findViewById(R.id.edit_indicator);
 687					viewHolder.image = view.findViewById(R.id.message_image);
 688					viewHolder.messageBody = view.findViewById(R.id.message_body);
 689					viewHolder.time = view.findViewById(R.id.message_time);
 690					viewHolder.indicatorReceived = view.findViewById(R.id.indicator_received);
 691					viewHolder.encryption = view.findViewById(R.id.message_encryption);
 692					viewHolder.audioPlayer = view.findViewById(R.id.audio_player);
 693					break;
 694				case STATUS:
 695					view = activity.getLayoutInflater().inflate(R.layout.message_status, parent, false);
 696					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 697					viewHolder.status_message = view.findViewById(R.id.status_message);
 698					viewHolder.load_more_messages = view.findViewById(R.id.load_more_messages);
 699					break;
 700				default:
 701					throw new AssertionError("Unknown view type");
 702			}
 703			if (viewHolder.messageBody != null) {
 704				listSelectionManager.onCreate(viewHolder.messageBody,
 705						new MessageBodyActionModeCallback(viewHolder.messageBody));
 706				viewHolder.messageBody.setCopyHandler(this);
 707			}
 708			view.setTag(viewHolder);
 709		} else {
 710			viewHolder = (ViewHolder) view.getTag();
 711			if (viewHolder == null) {
 712				return view;
 713			}
 714		}
 715
 716		boolean darkBackground = type == RECEIVED && (!isInValidSession || mUseGreenBackground) || activity.isDarkTheme();
 717
 718		if (type == DATE_SEPARATOR) {
 719			if (UIHelper.today(message.getTimeSent())) {
 720				viewHolder.status_message.setText(R.string.today);
 721			} else if (UIHelper.yesterday(message.getTimeSent())) {
 722				viewHolder.status_message.setText(R.string.yesterday);
 723			} else {
 724				viewHolder.status_message.setText(DateUtils.formatDateTime(activity, message.getTimeSent(), DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_SHOW_YEAR));
 725			}
 726			viewHolder.message_box.setBackgroundResource(activity.isDarkTheme() ? R.drawable.date_bubble_grey : R.drawable.date_bubble_white);
 727			return view;
 728		} else if (type == STATUS) {
 729			if ("LOAD_MORE".equals(message.getBody())) {
 730				viewHolder.status_message.setVisibility(View.GONE);
 731				viewHolder.contact_picture.setVisibility(View.GONE);
 732				viewHolder.load_more_messages.setVisibility(View.VISIBLE);
 733				viewHolder.load_more_messages.setOnClickListener(v -> loadMoreMessages((Conversation) message.getConversation()));
 734			} else {
 735				viewHolder.status_message.setVisibility(View.VISIBLE);
 736				viewHolder.load_more_messages.setVisibility(View.GONE);
 737				viewHolder.status_message.setText(message.getBody());
 738				boolean showAvatar;
 739				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 740					showAvatar = true;
 741					loadAvatar(message, viewHolder.contact_picture, activity.getPixel(32));
 742				} else if (message.getCounterpart() != null || message.getTrueCounterpart() != null || (message.getCounterparts() != null && message.getCounterparts().size() > 0)) {
 743					showAvatar = true;
 744					loadAvatar(message, viewHolder.contact_picture, activity.getPixel(32));
 745				} else {
 746					showAvatar = false;
 747				}
 748				if (showAvatar) {
 749					viewHolder.contact_picture.setAlpha(0.5f);
 750					viewHolder.contact_picture.setVisibility(View.VISIBLE);
 751				} else {
 752					viewHolder.contact_picture.setVisibility(View.GONE);
 753				}
 754			}
 755			return view;
 756		} else {
 757			loadAvatar(message, viewHolder.contact_picture, activity.getPixel(48));
 758		}
 759
 760		resetClickListener(viewHolder.message_box, viewHolder.messageBody);
 761
 762		viewHolder.contact_picture.setOnClickListener(v -> {
 763			if (MessageAdapter.this.mOnContactPictureClickedListener != null) {
 764				MessageAdapter.this.mOnContactPictureClickedListener
 765						.onContactPictureClicked(message);
 766			}
 767
 768		});
 769		viewHolder.contact_picture.setOnLongClickListener(v -> {
 770			if (MessageAdapter.this.mOnContactPictureLongClickedListener != null) {
 771				MessageAdapter.this.mOnContactPictureLongClickedListener
 772						.onContactPictureLongClicked(message);
 773				return true;
 774			} else {
 775				return false;
 776			}
 777		});
 778
 779		final Transferable transferable = message.getTransferable();
 780		if (transferable != null && transferable.getStatus() != Transferable.STATUS_UPLOADING) {
 781			if (transferable.getStatus() == Transferable.STATUS_OFFER) {
 782				displayDownloadableMessage(viewHolder, message, activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, message)));
 783			} else if (transferable.getStatus() == Transferable.STATUS_OFFER_CHECK_FILESIZE) {
 784				displayDownloadableMessage(viewHolder, message, activity.getString(R.string.check_x_filesize, UIHelper.getFileDescriptionString(activity, message)));
 785			} else {
 786				displayInfoMessage(viewHolder, UIHelper.getMessagePreview(activity, message).first, darkBackground);
 787			}
 788		} else if (message.isFileOrImage() && message.getEncryption() != Message.ENCRYPTION_PGP && message.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED) {
 789			if (message.getFileParams().width > 0 && message.getFileParams().height > 0) {
 790				displayImageMessage(viewHolder, message);
 791			} else if (message.getFileParams().runtime > 0) {
 792				displayAudioMessage(viewHolder, message, darkBackground);
 793			} else {
 794				displayOpenableMessage(viewHolder, message);
 795			}
 796		} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 797			if (account.isPgpDecryptionServiceConnected()) {
 798				if (conversation instanceof Conversation && !account.hasPendingPgpIntent((Conversation) conversation)) {
 799					displayInfoMessage(viewHolder, activity.getString(R.string.message_decrypting), darkBackground);
 800				} else {
 801					displayInfoMessage(viewHolder, activity.getString(R.string.pgp_message), darkBackground);
 802				}
 803			} else {
 804				displayInfoMessage(viewHolder, activity.getString(R.string.install_openkeychain), darkBackground);
 805				viewHolder.message_box.setOnClickListener(this::promptOpenKeychainInstall);
 806				viewHolder.messageBody.setOnClickListener(this::promptOpenKeychainInstall);
 807			}
 808		} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
 809			displayInfoMessage(viewHolder, activity.getString(R.string.decryption_failed), darkBackground);
 810		} else if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE) {
 811			displayInfoMessage(viewHolder, activity.getString(R.string.not_encrypted_for_this_device), darkBackground);
 812		} else {
 813			if (message.isGeoUri()) {
 814				displayLocationMessage(viewHolder, message);
 815			} else if (message.bodyIsOnlyEmojis() && message.getType() != Message.TYPE_PRIVATE) {
 816				displayEmojiMessage(viewHolder, message.getBody().trim(), darkBackground);
 817			} else if (message.treatAsDownloadable()) {
 818				try {
 819					URL url = new URL(message.getBody());
 820					displayDownloadableMessage(viewHolder,
 821							message,
 822							activity.getString(R.string.check_x_filesize_on_host,
 823									UIHelper.getFileDescriptionString(activity, message),
 824									url.getHost()));
 825				} catch (Exception e) {
 826					displayDownloadableMessage(viewHolder,
 827							message,
 828							activity.getString(R.string.check_x_filesize,
 829									UIHelper.getFileDescriptionString(activity, message)));
 830				}
 831			} else {
 832				displayTextMessage(viewHolder, message, darkBackground, type);
 833			}
 834		}
 835
 836		if (type == RECEIVED) {
 837			if (isInValidSession) {
 838				int bubble;
 839				if (!mUseGreenBackground) {
 840					bubble = activity.getThemeResource(R.attr.message_bubble_received_monochrome, R.drawable.message_bubble_received_white);
 841				} else {
 842					bubble = activity.getThemeResource(R.attr.message_bubble_received_green, R.drawable.message_bubble_received);
 843				}
 844				viewHolder.message_box.setBackgroundResource(bubble);
 845				viewHolder.encryption.setVisibility(View.GONE);
 846			} else {
 847				viewHolder.message_box.setBackgroundResource(R.drawable.message_bubble_received_warning);
 848				viewHolder.encryption.setVisibility(View.VISIBLE);
 849				if (omemoEncryption && !message.isTrusted()) {
 850					viewHolder.encryption.setText(R.string.not_trusted);
 851				} else {
 852					viewHolder.encryption.setText(CryptoHelper.encryptionTypeToText(message.getEncryption()));
 853				}
 854			}
 855		}
 856
 857		displayStatus(viewHolder, message, type, darkBackground);
 858
 859		return view;
 860	}
 861
 862	private void promptOpenKeychainInstall(View view) {
 863		activity.showInstallPgpDialog();
 864	}
 865
 866	private static void resetClickListener(View... views) {
 867		for (View view : views) {
 868			view.setOnClickListener(null);
 869		}
 870	}
 871
 872	@Override
 873	public void notifyDataSetChanged() {
 874		listSelectionManager.onBeforeNotifyDataSetChanged();
 875		super.notifyDataSetChanged();
 876		listSelectionManager.onAfterNotifyDataSetChanged();
 877	}
 878
 879	private String transformText(CharSequence text, int start, int end, boolean forCopy) {
 880		SpannableStringBuilder builder = new SpannableStringBuilder(text);
 881		Object copySpan = new Object();
 882		builder.setSpan(copySpan, start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 883		DividerSpan[] dividerSpans = builder.getSpans(0, builder.length(), DividerSpan.class);
 884		for (DividerSpan dividerSpan : dividerSpans) {
 885			builder.replace(builder.getSpanStart(dividerSpan), builder.getSpanEnd(dividerSpan),
 886					dividerSpan.isLarge() ? "\n\n" : "\n");
 887		}
 888		start = builder.getSpanStart(copySpan);
 889		end = builder.getSpanEnd(copySpan);
 890		if (start == -1 || end == -1) return "";
 891		builder = new SpannableStringBuilder(builder, start, end);
 892		if (forCopy) {
 893			QuoteSpan[] quoteSpans = builder.getSpans(0, builder.length(), QuoteSpan.class);
 894			for (QuoteSpan quoteSpan : quoteSpans) {
 895				builder.insert(builder.getSpanStart(quoteSpan), "> ");
 896			}
 897		}
 898		return builder.toString();
 899	}
 900
 901	@Override
 902	public String transformTextForCopy(CharSequence text, int start, int end) {
 903		if (text instanceof Spanned) {
 904			return transformText(text, start, end, true);
 905		} else {
 906			return text.toString().substring(start, end);
 907		}
 908	}
 909
 910	public FileBackend getFileBackend() {
 911		return activity.xmppConnectionService.getFileBackend();
 912	}
 913
 914	public void stopAudioPlayer() {
 915		audioPlayer.stop();
 916	}
 917
 918	public void startStopPending() {
 919		audioPlayer.startStopPending();
 920	}
 921
 922	public void openDownloadable(Message message) {
 923		if (ContextCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
 924			ConversationFragment.registerPendingMessage(activity, message);
 925			ActivityCompat.requestPermissions(activity, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, ConversationsActivity.REQUEST_OPEN_MESSAGE);
 926			return;
 927		}
 928		DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
 929		if (!file.exists()) {
 930			Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
 931			return;
 932		}
 933		Intent openIntent = new Intent(Intent.ACTION_VIEW);
 934		String mime = file.getMimeType();
 935		if (mime == null) {
 936			mime = "*/*";
 937		}
 938		Uri uri;
 939		try {
 940			uri = FileBackend.getUriForFile(activity, file);
 941		} catch (SecurityException e) {
 942			Log.d(Config.LOGTAG, "No permission to access " + file.getAbsolutePath(), e);
 943			Toast.makeText(activity, activity.getString(R.string.no_permission_to_access_x, file.getAbsolutePath()), Toast.LENGTH_SHORT).show();
 944			return;
 945		}
 946		openIntent.setDataAndType(uri, mime);
 947		openIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
 948		PackageManager manager = activity.getPackageManager();
 949		List<ResolveInfo> info = manager.queryIntentActivities(openIntent, 0);
 950		if (info.size() == 0) {
 951			openIntent.setDataAndType(uri, "*/*");
 952		}
 953		try {
 954			getContext().startActivity(openIntent);
 955		} catch (ActivityNotFoundException e) {
 956			Toast.makeText(activity, R.string.no_application_found_to_open_file, Toast.LENGTH_SHORT).show();
 957		}
 958	}
 959
 960	public void showLocation(Message message) {
 961		for (Intent intent : GeoHelper.createGeoIntentsFromMessage(activity, message)) {
 962			if (intent.resolveActivity(getContext().getPackageManager()) != null) {
 963				getContext().startActivity(intent);
 964				return;
 965			}
 966		}
 967		Toast.makeText(activity, R.string.no_application_found_to_display_location, Toast.LENGTH_SHORT).show();
 968	}
 969
 970	public void updatePreferences() {
 971		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
 972		this.mIndicateReceived = p.getBoolean("indicate_received", activity.getResources().getBoolean(R.bool.indicate_received));
 973		this.mUseGreenBackground = p.getBoolean("use_green_background", activity.getResources().getBoolean(R.bool.use_green_background));
 974	}
 975
 976	public void loadAvatar(Message message, ImageView imageView, int size) {
 977		if (cancelPotentialWork(message, imageView)) {
 978			final Bitmap bm = activity.avatarService().get(message, size, true);
 979			if (bm != null) {
 980				cancelPotentialWork(message, imageView);
 981				imageView.setImageBitmap(bm);
 982				imageView.setBackgroundColor(Color.TRANSPARENT);
 983			} else {
 984				@ColorInt int bg;
 985				if (message.getType() == Message.TYPE_STATUS && message.getCounterparts() != null && message.getCounterparts().size() > 1) {
 986					bg = Color.TRANSPARENT;
 987				} else {
 988					bg = UIHelper.getColorForName(UIHelper.getMessageDisplayName(message));
 989				}
 990				imageView.setBackgroundColor(bg);
 991				imageView.setImageDrawable(null);
 992				final BitmapWorkerTask task = new BitmapWorkerTask(imageView, size);
 993				final AsyncDrawable asyncDrawable = new AsyncDrawable(activity.getResources(), null, task);
 994				imageView.setImageDrawable(asyncDrawable);
 995				try {
 996					task.execute(message);
 997				} catch (final RejectedExecutionException ignored) {
 998				}
 999			}
1000		}
1001	}
1002
1003	public void setHighlightedTerm(List<String> terms) {
1004		this.highlightedTerm = terms == null ? null : StylingHelper.filterHighlightedWords(terms);
1005	}
1006
1007	public interface OnQuoteListener {
1008		void onQuote(String text);
1009	}
1010
1011	public interface OnContactPictureClicked {
1012		void onContactPictureClicked(Message message);
1013	}
1014
1015	public interface OnContactPictureLongClicked {
1016		void onContactPictureLongClicked(Message message);
1017	}
1018
1019	private static class ViewHolder {
1020
1021		public Button load_more_messages;
1022		public ImageView edit_indicator;
1023		public RelativeLayout audioPlayer;
1024		protected LinearLayout message_box;
1025		protected Button download_button;
1026		protected ImageView image;
1027		protected ImageView indicator;
1028		protected ImageView indicatorReceived;
1029		protected TextView time;
1030		protected CopyTextView messageBody;
1031		protected ImageView contact_picture;
1032		protected TextView status_message;
1033		protected TextView encryption;
1034	}
1035
1036	static class AsyncDrawable extends BitmapDrawable {
1037		private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
1038
1039		public AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
1040			super(res, bitmap);
1041			bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
1042		}
1043
1044		public BitmapWorkerTask getBitmapWorkerTask() {
1045			return bitmapWorkerTaskReference.get();
1046		}
1047	}
1048
1049	private class MessageBodyActionModeCallback implements ActionMode.Callback {
1050
1051		private final TextView textView;
1052
1053		public MessageBodyActionModeCallback(TextView textView) {
1054			this.textView = textView;
1055		}
1056
1057		@Override
1058		public boolean onCreateActionMode(ActionMode mode, Menu menu) {
1059			if (onQuoteListener != null) {
1060				int quoteResId = activity.getThemeResource(R.attr.icon_quote, R.drawable.ic_action_reply);
1061				// 3rd item is placed after "copy" item
1062				menu.add(0, android.R.id.button1, 3, R.string.quote).setIcon(quoteResId)
1063						.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
1064			}
1065			return false;
1066		}
1067
1068		@Override
1069		public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
1070			return false;
1071		}
1072
1073		@Override
1074		public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
1075			if (item.getItemId() == android.R.id.button1) {
1076				int start = textView.getSelectionStart();
1077				int end = textView.getSelectionEnd();
1078				if (end > start) {
1079					String text = transformText(textView.getText(), start, end, false);
1080					if (onQuoteListener != null) {
1081						onQuoteListener.onQuote(text);
1082					}
1083					mode.finish();
1084				}
1085				return true;
1086			}
1087			return false;
1088		}
1089
1090		@Override
1091		public void onDestroyActionMode(ActionMode mode) {
1092		}
1093	}
1094
1095	class BitmapWorkerTask extends AsyncTask<Message, Void, Bitmap> {
1096		private final WeakReference<ImageView> imageViewReference;
1097		private final int size;
1098		private Message message = null;
1099
1100		public BitmapWorkerTask(ImageView imageView, int size) {
1101			imageViewReference = new WeakReference<>(imageView);
1102			this.size = size;
1103		}
1104
1105		@Override
1106		protected Bitmap doInBackground(Message... params) {
1107			this.message = params[0];
1108			return activity.avatarService().get(this.message, size, isCancelled());
1109		}
1110
1111		@Override
1112		protected void onPostExecute(Bitmap bitmap) {
1113			if (bitmap != null && !isCancelled()) {
1114				final ImageView imageView = imageViewReference.get();
1115				if (imageView != null) {
1116					imageView.setImageBitmap(bitmap);
1117					imageView.setBackgroundColor(0x00000000);
1118				}
1119			}
1120		}
1121	}
1122}