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