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.util.DisplayMetrics;
  31import android.util.Log;
  32import android.view.ActionMode;
  33import android.view.Menu;
  34import android.view.MenuItem;
  35import android.view.View;
  36import android.view.ViewGroup;
  37import android.view.WindowManager;
  38import android.widget.ArrayAdapter;
  39import android.widget.Button;
  40import android.widget.ImageView;
  41import android.widget.LinearLayout;
  42import android.widget.RelativeLayout;
  43import android.widget.TextView;
  44import android.widget.Toast;
  45
  46import java.lang.ref.WeakReference;
  47import java.net.URL;
  48import java.util.List;
  49import java.util.concurrent.RejectedExecutionException;
  50import java.util.regex.Matcher;
  51import java.util.regex.Pattern;
  52
  53import eu.siacs.conversations.Config;
  54import eu.siacs.conversations.R;
  55import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  56import eu.siacs.conversations.entities.Account;
  57import eu.siacs.conversations.entities.Conversation;
  58import eu.siacs.conversations.entities.Conversational;
  59import eu.siacs.conversations.entities.DownloadableFile;
  60import eu.siacs.conversations.entities.Message;
  61import eu.siacs.conversations.entities.Message.FileParams;
  62import eu.siacs.conversations.entities.Transferable;
  63import eu.siacs.conversations.http.P1S3UrlStreamHandler;
  64import eu.siacs.conversations.persistance.FileBackend;
  65import eu.siacs.conversations.services.MessageArchiveService;
  66import eu.siacs.conversations.services.NotificationService;
  67import eu.siacs.conversations.ui.ConversationsActivity;
  68import eu.siacs.conversations.ui.ConversationFragment;
  69import eu.siacs.conversations.ui.XmppActivity;
  70import eu.siacs.conversations.ui.service.AudioPlayer;
  71import eu.siacs.conversations.ui.text.DividerSpan;
  72import eu.siacs.conversations.ui.text.QuoteSpan;
  73import eu.siacs.conversations.ui.util.MyLinkify;
  74import eu.siacs.conversations.ui.util.ViewUtil;
  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.StylingHelper;
  83import eu.siacs.conversations.utils.UIHelper;
  84import eu.siacs.conversations.xmpp.mam.MamReference;
  85
  86public class MessageAdapter extends ArrayAdapter<Message> implements CopyTextView.CopyHandler {
  87
  88	public static final String DATE_SEPARATOR_BODY = "DATE_SEPARATOR";
  89	private static final int SENT = 0;
  90	private static final int RECEIVED = 1;
  91	private static final int STATUS = 2;
  92	private static final int DATE_SEPARATOR = 3;
  93	private final XmppActivity activity;
  94	private final ListSelectionManager listSelectionManager = new ListSelectionManager();
  95	private final AudioPlayer audioPlayer;
  96	private List<String> highlightedTerm = null;
  97	private DisplayMetrics metrics;
  98	private OnContactPictureClicked mOnContactPictureClickedListener;
  99	private OnContactPictureLongClicked mOnContactPictureLongClickedListener;
 100	private boolean mIndicateReceived = false;
 101	private boolean mUseGreenBackground = false;
 102	private OnQuoteListener onQuoteListener;
 103	public MessageAdapter(XmppActivity activity, List<Message> messages) {
 104		super(activity, 0, messages);
 105		this.audioPlayer = new AudioPlayer(this);
 106		this.activity = activity;
 107		metrics = getContext().getResources().getDisplayMetrics();
 108		updatePreferences();
 109	}
 110
 111
 112	public static boolean cancelPotentialWork(Message message, ImageView imageView) {
 113		final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
 114
 115		if (bitmapWorkerTask != null) {
 116			final Message oldMessage = bitmapWorkerTask.message;
 117			if (oldMessage == null || message != oldMessage) {
 118				bitmapWorkerTask.cancel(true);
 119			} else {
 120				return false;
 121			}
 122		}
 123		return true;
 124	}
 125
 126	private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
 127		if (imageView != null) {
 128			final Drawable drawable = imageView.getDrawable();
 129			if (drawable instanceof AsyncDrawable) {
 130				final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
 131				return asyncDrawable.getBitmapWorkerTask();
 132			}
 133		}
 134		return null;
 135	}
 136
 137	private static void resetClickListener(View... views) {
 138		for (View view : views) {
 139			view.setOnClickListener(null);
 140		}
 141	}
 142
 143	public void flagScreenOn() {
 144		activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
 145	}
 146
 147	public void flagScreenOff() {
 148		activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
 149	}
 150
 151	public void setOnContactPictureClicked(OnContactPictureClicked listener) {
 152		this.mOnContactPictureClickedListener = listener;
 153	}
 154
 155	public Activity getActivity() {
 156		return activity;
 157	}
 158
 159	public void setOnContactPictureLongClicked(
 160			OnContactPictureLongClicked listener) {
 161		this.mOnContactPictureLongClickedListener = listener;
 162	}
 163
 164	public void setOnQuoteListener(OnQuoteListener listener) {
 165		this.onQuoteListener = listener;
 166	}
 167
 168	@Override
 169	public int getViewTypeCount() {
 170		return 4;
 171	}
 172
 173	private int getItemViewType(Message message) {
 174		if (message.getType() == Message.TYPE_STATUS) {
 175			if (DATE_SEPARATOR_BODY.equals(message.getBody())) {
 176				return DATE_SEPARATOR;
 177			} else {
 178				return STATUS;
 179			}
 180		} else if (message.getStatus() <= Message.STATUS_RECEIVED) {
 181			return RECEIVED;
 182		}
 183
 184		return SENT;
 185	}
 186
 187	@Override
 188	public int getItemViewType(int position) {
 189		return this.getItemViewType(getItem(position));
 190	}
 191
 192	private int getMessageTextColor(boolean onDark, boolean primary) {
 193		if (onDark) {
 194			return ContextCompat.getColor(activity, primary ? R.color.white : R.color.white70);
 195		} else {
 196			return ContextCompat.getColor(activity, primary ? R.color.black87 : R.color.black54);
 197		}
 198	}
 199
 200	private void displayStatus(ViewHolder viewHolder, Message message, int type, boolean darkBackground) {
 201		String filesize = null;
 202		String info = null;
 203		boolean error = false;
 204		if (viewHolder.indicatorReceived != null) {
 205			viewHolder.indicatorReceived.setVisibility(View.GONE);
 206		}
 207
 208		if (viewHolder.edit_indicator != null) {
 209			if (message.edited()) {
 210				viewHolder.edit_indicator.setVisibility(View.VISIBLE);
 211				viewHolder.edit_indicator.setImageResource(darkBackground ? R.drawable.ic_mode_edit_white_18dp : R.drawable.ic_mode_edit_black_18dp);
 212				viewHolder.edit_indicator.setAlpha(darkBackground ? 0.7f : 0.57f);
 213			} else {
 214				viewHolder.edit_indicator.setVisibility(View.GONE);
 215			}
 216		}
 217		final Transferable transferable = message.getTransferable();
 218		boolean multiReceived = message.getConversation().getMode() == Conversation.MODE_MULTI
 219				&& message.getMergedStatus() <= Message.STATUS_RECEIVED;
 220		if (message.isFileOrImage() || transferable != null) {
 221			FileParams params = message.getFileParams();
 222			if (params.size > (1.5 * 1024 * 1024)) {
 223				filesize = Math.round(params.size * 1f / (1024 * 1024)) + " MiB";
 224			} else if (params.size >= 1024) {
 225				filesize = Math.round(params.size * 1f / 1024) + " KiB";
 226			} else if (params.size > 0) {
 227				filesize = params.size + " B";
 228			}
 229			if (transferable != null && transferable.getStatus() == Transferable.STATUS_FAILED) {
 230				error = true;
 231			}
 232		}
 233		switch (message.getMergedStatus()) {
 234			case Message.STATUS_WAITING:
 235				info = getContext().getString(R.string.waiting);
 236				break;
 237			case Message.STATUS_UNSEND:
 238				if (transferable != null) {
 239					info = getContext().getString(R.string.sending_file, transferable.getProgress());
 240				} else {
 241					info = getContext().getString(R.string.sending);
 242				}
 243				break;
 244			case Message.STATUS_OFFERED:
 245				info = getContext().getString(R.string.offering);
 246				break;
 247			case Message.STATUS_SEND_RECEIVED:
 248				if (mIndicateReceived) {
 249					viewHolder.indicatorReceived.setVisibility(View.VISIBLE);
 250				}
 251				break;
 252			case Message.STATUS_SEND_DISPLAYED:
 253				if (mIndicateReceived) {
 254					viewHolder.indicatorReceived.setVisibility(View.VISIBLE);
 255				}
 256				break;
 257			case Message.STATUS_SEND_FAILED:
 258				if (Message.ERROR_MESSAGE_CANCELLED.equals(message.getErrorMessage())) {
 259					info = getContext().getString(R.string.cancelled);
 260				} else {
 261					info = getContext().getString(R.string.send_failed);
 262				}
 263				error = true;
 264				break;
 265			default:
 266				if (multiReceived) {
 267					info = UIHelper.getMessageDisplayName(message);
 268				}
 269				break;
 270		}
 271		if (error && type == SENT) {
 272			viewHolder.time.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Caption_Warning);
 273		} else {
 274			if (darkBackground) {
 275				viewHolder.time.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Caption_OnDark);
 276			} else {
 277				viewHolder.time.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Caption);
 278			}
 279			viewHolder.time.setTextColor(this.getMessageTextColor(darkBackground, false));
 280		}
 281		if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 282			viewHolder.indicator.setVisibility(View.GONE);
 283		} else {
 284			boolean verified = false;
 285			if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
 286				final FingerprintStatus status = message.getConversation()
 287						.getAccount().getAxolotlService().getFingerprintTrust(
 288								message.getFingerprint());
 289				if (status != null && status.isVerified()) {
 290					verified = true;
 291				}
 292			}
 293			if (verified) {
 294				viewHolder.indicator.setImageResource(darkBackground ? R.drawable.ic_verified_user_white_18dp : R.drawable.ic_verified_user_black_18dp);
 295			} else {
 296				viewHolder.indicator.setImageResource(darkBackground ? R.drawable.ic_lock_white_18dp : R.drawable.ic_lock_black_18dp);
 297			}
 298			if (darkBackground) {
 299				viewHolder.indicator.setAlpha(0.7f);
 300			} else {
 301				viewHolder.indicator.setAlpha(0.57f);
 302			}
 303			viewHolder.indicator.setVisibility(View.VISIBLE);
 304		}
 305
 306		String formatedTime = UIHelper.readableTimeDifferenceFull(getContext(), message.getMergedTimeSent());
 307		if (message.getStatus() <= Message.STATUS_RECEIVED) {
 308			if ((filesize != null) && (info != null)) {
 309				viewHolder.time.setText(formatedTime + " \u00B7 " + filesize + " \u00B7 " + info);
 310			} else if ((filesize == null) && (info != null)) {
 311				viewHolder.time.setText(formatedTime + " \u00B7 " + info);
 312			} else if ((filesize != null) && (info == null)) {
 313				viewHolder.time.setText(formatedTime + " \u00B7 " + filesize);
 314			} else {
 315				viewHolder.time.setText(formatedTime);
 316			}
 317		} else {
 318			if ((filesize != null) && (info != null)) {
 319				viewHolder.time.setText(filesize + " \u00B7 " + info);
 320			} else if ((filesize == null) && (info != null)) {
 321				if (error) {
 322					viewHolder.time.setText(info + " \u00B7 " + formatedTime);
 323				} else {
 324					viewHolder.time.setText(info);
 325				}
 326			} else if ((filesize != null) && (info == null)) {
 327				viewHolder.time.setText(filesize + " \u00B7 " + formatedTime);
 328			} else {
 329				viewHolder.time.setText(formatedTime);
 330			}
 331		}
 332	}
 333
 334	private void displayInfoMessage(ViewHolder viewHolder, CharSequence text, boolean darkBackground) {
 335		viewHolder.download_button.setVisibility(View.GONE);
 336		viewHolder.audioPlayer.setVisibility(View.GONE);
 337		viewHolder.image.setVisibility(View.GONE);
 338		viewHolder.messageBody.setVisibility(View.VISIBLE);
 339		viewHolder.messageBody.setText(text);
 340		if (darkBackground) {
 341			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Secondary_OnDark);
 342		} else {
 343			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Secondary);
 344		}
 345		viewHolder.messageBody.setTextIsSelectable(false);
 346	}
 347
 348	private void displayEmojiMessage(final ViewHolder viewHolder, final String body, final boolean darkBackground) {
 349		viewHolder.download_button.setVisibility(View.GONE);
 350		viewHolder.audioPlayer.setVisibility(View.GONE);
 351		viewHolder.image.setVisibility(View.GONE);
 352		viewHolder.messageBody.setVisibility(View.VISIBLE);
 353		if (darkBackground) {
 354			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Emoji_OnDark);
 355		} else {
 356			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Emoji);
 357		}
 358		Spannable span = new SpannableString(body);
 359		float size = Emoticons.isEmoji(body) ? 3.0f : 2.0f;
 360		span.setSpan(new RelativeSizeSpan(size), 0, body.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 361		viewHolder.messageBody.setText(EmojiWrapper.transform(span));
 362	}
 363
 364	private void applyQuoteSpan(SpannableStringBuilder body, int start, int end, boolean darkBackground) {
 365		if (start > 1 && !"\n\n".equals(body.subSequence(start - 2, start).toString())) {
 366			body.insert(start++, "\n");
 367			body.setSpan(new DividerSpan(false), start - 2, start, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 368			end++;
 369		}
 370		if (end < body.length() - 1 && !"\n\n".equals(body.subSequence(end, end + 2).toString())) {
 371			body.insert(end, "\n");
 372			body.setSpan(new DividerSpan(false), end, end + 2, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 373		}
 374		int color = darkBackground ? this.getMessageTextColor(darkBackground, false)
 375				: ContextCompat.getColor(activity, R.color.green700_desaturated);
 376		DisplayMetrics metrics = getContext().getResources().getDisplayMetrics();
 377		body.setSpan(new QuoteSpan(color, metrics), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 378	}
 379
 380	/**
 381	 * Applies QuoteSpan to group of lines which starts with > or » characters.
 382	 * Appends likebreaks and applies DividerSpan to them to show a padding between quote and text.
 383	 */
 384	private boolean handleTextQuotes(SpannableStringBuilder body, boolean darkBackground) {
 385		boolean startsWithQuote = false;
 386		char previous = '\n';
 387		int lineStart = -1;
 388		int lineTextStart = -1;
 389		int quoteStart = -1;
 390		for (int i = 0; i <= body.length(); i++) {
 391			char current = body.length() > i ? body.charAt(i) : '\n';
 392			if (lineStart == -1) {
 393				if (previous == '\n') {
 394					if ((current == '>' && UIHelper.isPositionFollowedByQuoteableCharacter(body, i))
 395							|| current == '\u00bb' && !UIHelper.isPositionFollowedByQuote(body, i)) {
 396						// Line start with quote
 397						lineStart = i;
 398						if (quoteStart == -1) quoteStart = i;
 399						if (i == 0) startsWithQuote = true;
 400					} else if (quoteStart >= 0) {
 401						// Line start without quote, apply spans there
 402						applyQuoteSpan(body, quoteStart, i - 1, darkBackground);
 403						quoteStart = -1;
 404					}
 405				}
 406			} else {
 407				// Remove extra spaces between > and first character in the line
 408				// > character will be removed too
 409				if (current != ' ' && lineTextStart == -1) {
 410					lineTextStart = i;
 411				}
 412				if (current == '\n') {
 413					body.delete(lineStart, lineTextStart);
 414					i -= lineTextStart - lineStart;
 415					if (i == lineStart) {
 416						// Avoid empty lines because span over empty line can be hidden
 417						body.insert(i++, " ");
 418					}
 419					lineStart = -1;
 420					lineTextStart = -1;
 421				}
 422			}
 423			previous = current;
 424		}
 425		if (quoteStart >= 0) {
 426			// Apply spans to finishing open quote
 427			applyQuoteSpan(body, quoteStart, body.length(), darkBackground);
 428		}
 429		return startsWithQuote;
 430	}
 431
 432	private void displayTextMessage(final ViewHolder viewHolder, final Message message, boolean darkBackground, int type) {
 433		viewHolder.download_button.setVisibility(View.GONE);
 434		viewHolder.image.setVisibility(View.GONE);
 435		viewHolder.audioPlayer.setVisibility(View.GONE);
 436		viewHolder.messageBody.setVisibility(View.VISIBLE);
 437
 438		if (darkBackground) {
 439			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_OnDark);
 440		} else {
 441			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1);
 442		}
 443		viewHolder.messageBody.setHighlightColor(ContextCompat.getColor(activity, darkBackground
 444				? (type == SENT || !mUseGreenBackground ? R.color.black26 : R.color.grey800) : R.color.grey500));
 445		viewHolder.messageBody.setTypeface(null, Typeface.NORMAL);
 446
 447		if (message.getBody() != null) {
 448			final String nick = UIHelper.getMessageDisplayName(message);
 449			SpannableStringBuilder body = message.getMergedBody();
 450			boolean hasMeCommand = message.hasMeCommand();
 451			if (hasMeCommand) {
 452				body = body.replace(0, Message.ME_COMMAND.length(), nick + " ");
 453			}
 454			if (body.length() > Config.MAX_DISPLAY_MESSAGE_CHARS) {
 455				body = new SpannableStringBuilder(body, 0, Config.MAX_DISPLAY_MESSAGE_CHARS);
 456				body.append("\u2026");
 457			}
 458			Message.MergeSeparator[] mergeSeparators = body.getSpans(0, body.length(), Message.MergeSeparator.class);
 459			for (Message.MergeSeparator mergeSeparator : mergeSeparators) {
 460				int start = body.getSpanStart(mergeSeparator);
 461				int end = body.getSpanEnd(mergeSeparator);
 462				body.setSpan(new DividerSpan(true), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 463			}
 464			boolean startsWithQuote = handleTextQuotes(body, darkBackground);
 465			if (message.getType() != Message.TYPE_PRIVATE) {
 466				if (hasMeCommand) {
 467					body.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), 0, nick.length(),
 468							Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 469				}
 470			} else {
 471				String privateMarker;
 472				if (message.getStatus() <= Message.STATUS_RECEIVED) {
 473					privateMarker = activity.getString(R.string.private_message);
 474				} else {
 475					final String to;
 476					if (message.getCounterpart() != null) {
 477						to = message.getCounterpart().getResource();
 478					} else {
 479						to = "";
 480					}
 481					privateMarker = activity.getString(R.string.private_message_to, to);
 482				}
 483				body.insert(0, privateMarker);
 484				int privateMarkerIndex = privateMarker.length();
 485				if (startsWithQuote) {
 486					body.insert(privateMarkerIndex, "\n\n");
 487					body.setSpan(new DividerSpan(false), privateMarkerIndex, privateMarkerIndex + 2,
 488							Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 489				} else {
 490					body.insert(privateMarkerIndex, " ");
 491				}
 492				body.setSpan(new ForegroundColorSpan(getMessageTextColor(darkBackground, false)), 0, privateMarkerIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 493				body.setSpan(new StyleSpan(Typeface.BOLD), 0, privateMarkerIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 494				if (hasMeCommand) {
 495					body.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), privateMarkerIndex + 1,
 496							privateMarkerIndex + 1 + nick.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 497				}
 498			}
 499			if (message.getConversation().getMode() == Conversation.MODE_MULTI && message.getStatus() == Message.STATUS_RECEIVED) {
 500				if (message.getConversation() instanceof Conversation) {
 501					final Conversation conversation = (Conversation) message.getConversation();
 502					Pattern pattern = NotificationService.generateNickHighlightPattern(conversation.getMucOptions().getActualNick());
 503					Matcher matcher = pattern.matcher(body);
 504					while (matcher.find()) {
 505						body.setSpan(new StyleSpan(Typeface.BOLD), matcher.start(), matcher.end(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 506					}
 507				}
 508			}
 509			Matcher matcher = Emoticons.getEmojiPattern(body).matcher(body);
 510			while (matcher.find()) {
 511				if (matcher.start() < matcher.end()) {
 512					body.setSpan(new RelativeSizeSpan(1.2f), matcher.start(), matcher.end(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 513				}
 514			}
 515
 516			StylingHelper.format(body, viewHolder.messageBody.getCurrentTextColor());
 517			if (highlightedTerm != null) {
 518				StylingHelper.highlight(activity, body, highlightedTerm, StylingHelper.isDarkText(viewHolder.messageBody));
 519			}
 520			MyLinkify.addLinks(body,true);
 521			viewHolder.messageBody.setAutoLinkMask(0);
 522			viewHolder.messageBody.setText(EmojiWrapper.transform(body));
 523			viewHolder.messageBody.setTextIsSelectable(true);
 524			viewHolder.messageBody.setMovementMethod(ClickableMovementMethod.getInstance());
 525			listSelectionManager.onUpdate(viewHolder.messageBody, message);
 526		} else {
 527			viewHolder.messageBody.setText("");
 528			viewHolder.messageBody.setTextIsSelectable(false);
 529		}
 530	}
 531
 532	private void displayDownloadableMessage(ViewHolder viewHolder, final Message message, String text) {
 533		viewHolder.image.setVisibility(View.GONE);
 534		viewHolder.messageBody.setVisibility(View.GONE);
 535		viewHolder.audioPlayer.setVisibility(View.GONE);
 536		viewHolder.download_button.setVisibility(View.VISIBLE);
 537		viewHolder.download_button.setText(text);
 538		viewHolder.download_button.setOnClickListener(v -> ConversationFragment.downloadFile(activity, message));
 539	}
 540
 541	private void displayOpenableMessage(ViewHolder viewHolder, final Message message) {
 542		viewHolder.image.setVisibility(View.GONE);
 543		viewHolder.messageBody.setVisibility(View.GONE);
 544		viewHolder.audioPlayer.setVisibility(View.GONE);
 545		viewHolder.download_button.setVisibility(View.VISIBLE);
 546		viewHolder.download_button.setText(activity.getString(R.string.open_x_file, UIHelper.getFileDescriptionString(activity, message)));
 547		viewHolder.download_button.setOnClickListener(v -> openDownloadable(message));
 548	}
 549
 550	private void displayLocationMessage(ViewHolder viewHolder, final Message message) {
 551		viewHolder.image.setVisibility(View.GONE);
 552		viewHolder.messageBody.setVisibility(View.GONE);
 553		viewHolder.audioPlayer.setVisibility(View.GONE);
 554		viewHolder.download_button.setVisibility(View.VISIBLE);
 555		viewHolder.download_button.setText(R.string.show_location);
 556		viewHolder.download_button.setOnClickListener(v -> showLocation(message));
 557	}
 558
 559	private void displayAudioMessage(ViewHolder viewHolder, Message message, boolean darkBackground) {
 560		viewHolder.image.setVisibility(View.GONE);
 561		viewHolder.messageBody.setVisibility(View.GONE);
 562		viewHolder.download_button.setVisibility(View.GONE);
 563		final RelativeLayout audioPlayer = viewHolder.audioPlayer;
 564		audioPlayer.setVisibility(View.VISIBLE);
 565		AudioPlayer.ViewHolder.get(audioPlayer).setDarkBackground(darkBackground);
 566		this.audioPlayer.init(audioPlayer, message);
 567	}
 568
 569	private void displayImageMessage(ViewHolder viewHolder, final Message message) {
 570		viewHolder.download_button.setVisibility(View.GONE);
 571		viewHolder.messageBody.setVisibility(View.GONE);
 572		viewHolder.audioPlayer.setVisibility(View.GONE);
 573		viewHolder.image.setVisibility(View.VISIBLE);
 574		FileParams params = message.getFileParams();
 575		double target = metrics.density * 288;
 576		int scaledW;
 577		int scaledH;
 578		if (Math.max(params.height, params.width) * metrics.density <= target) {
 579			scaledW = (int) (params.width * metrics.density);
 580			scaledH = (int) (params.height * metrics.density);
 581		} else if (Math.max(params.height, params.width) <= target) {
 582			scaledW = params.width;
 583			scaledH = params.height;
 584		} else if (params.width <= params.height) {
 585			scaledW = (int) (params.width / ((double) params.height / target));
 586			scaledH = (int) target;
 587		} else {
 588			scaledW = (int) target;
 589			scaledH = (int) (params.height / ((double) params.width / target));
 590		}
 591		LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(scaledW, scaledH);
 592		layoutParams.setMargins(0, (int) (metrics.density * 4), 0, (int) (metrics.density * 4));
 593		viewHolder.image.setLayoutParams(layoutParams);
 594		activity.loadBitmap(message, viewHolder.image);
 595		viewHolder.image.setOnClickListener(v -> openDownloadable(message));
 596	}
 597
 598	private void loadMoreMessages(Conversation conversation) {
 599		conversation.setLastClearHistory(0, null);
 600		activity.xmppConnectionService.updateConversation(conversation);
 601		conversation.setHasMessagesLeftOnServer(true);
 602		conversation.setFirstMamReference(null);
 603		long timestamp = conversation.getLastMessageTransmitted().getTimestamp();
 604		if (timestamp == 0) {
 605			timestamp = System.currentTimeMillis();
 606		}
 607		conversation.messagesLoaded.set(true);
 608		MessageArchiveService.Query query = activity.xmppConnectionService.getMessageArchiveService().query(conversation, new MamReference(0), timestamp, false);
 609		if (query != null) {
 610			Toast.makeText(activity, R.string.fetching_history_from_server, Toast.LENGTH_LONG).show();
 611		} else {
 612			Toast.makeText(activity, R.string.not_fetching_history_retention_period, Toast.LENGTH_SHORT).show();
 613		}
 614	}
 615
 616	@Override
 617	public View getView(int position, View view, ViewGroup parent) {
 618		final Message message = getItem(position);
 619		final boolean omemoEncryption = message.getEncryption() == Message.ENCRYPTION_AXOLOTL;
 620		final boolean isInValidSession = message.isValidInSession() && (!omemoEncryption || message.isTrusted());
 621		final Conversational conversation = message.getConversation();
 622		final Account account = conversation.getAccount();
 623		final int type = getItemViewType(position);
 624		ViewHolder viewHolder;
 625		if (view == null) {
 626			viewHolder = new ViewHolder();
 627			switch (type) {
 628				case DATE_SEPARATOR:
 629					view = activity.getLayoutInflater().inflate(R.layout.message_date_bubble, parent, false);
 630					viewHolder.status_message = view.findViewById(R.id.message_body);
 631					viewHolder.message_box = view.findViewById(R.id.message_box);
 632					break;
 633				case SENT:
 634					view = activity.getLayoutInflater().inflate(R.layout.message_sent, parent, false);
 635					viewHolder.message_box = view.findViewById(R.id.message_box);
 636					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 637					viewHolder.download_button = view.findViewById(R.id.download_button);
 638					viewHolder.indicator = view.findViewById(R.id.security_indicator);
 639					viewHolder.edit_indicator = view.findViewById(R.id.edit_indicator);
 640					viewHolder.image = view.findViewById(R.id.message_image);
 641					viewHolder.messageBody = view.findViewById(R.id.message_body);
 642					viewHolder.time = view.findViewById(R.id.message_time);
 643					viewHolder.indicatorReceived = view.findViewById(R.id.indicator_received);
 644					viewHolder.audioPlayer = view.findViewById(R.id.audio_player);
 645					break;
 646				case RECEIVED:
 647					view = activity.getLayoutInflater().inflate(R.layout.message_received, parent, false);
 648					viewHolder.message_box = view.findViewById(R.id.message_box);
 649					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 650					viewHolder.download_button = view.findViewById(R.id.download_button);
 651					viewHolder.indicator = view.findViewById(R.id.security_indicator);
 652					viewHolder.edit_indicator = view.findViewById(R.id.edit_indicator);
 653					viewHolder.image = view.findViewById(R.id.message_image);
 654					viewHolder.messageBody = view.findViewById(R.id.message_body);
 655					viewHolder.time = view.findViewById(R.id.message_time);
 656					viewHolder.indicatorReceived = view.findViewById(R.id.indicator_received);
 657					viewHolder.encryption = view.findViewById(R.id.message_encryption);
 658					viewHolder.audioPlayer = view.findViewById(R.id.audio_player);
 659					break;
 660				case STATUS:
 661					view = activity.getLayoutInflater().inflate(R.layout.message_status, parent, false);
 662					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 663					viewHolder.status_message = view.findViewById(R.id.status_message);
 664					viewHolder.load_more_messages = view.findViewById(R.id.load_more_messages);
 665					break;
 666				default:
 667					throw new AssertionError("Unknown view type");
 668			}
 669			if (viewHolder.messageBody != null) {
 670				listSelectionManager.onCreate(viewHolder.messageBody,
 671						new MessageBodyActionModeCallback(viewHolder.messageBody));
 672				viewHolder.messageBody.setCopyHandler(this);
 673			}
 674			view.setTag(viewHolder);
 675		} else {
 676			viewHolder = (ViewHolder) view.getTag();
 677			if (viewHolder == null) {
 678				return view;
 679			}
 680		}
 681
 682		boolean darkBackground = type == RECEIVED && (!isInValidSession || mUseGreenBackground) || activity.isDarkTheme();
 683
 684		if (type == DATE_SEPARATOR) {
 685			if (UIHelper.today(message.getTimeSent())) {
 686				viewHolder.status_message.setText(R.string.today);
 687			} else if (UIHelper.yesterday(message.getTimeSent())) {
 688				viewHolder.status_message.setText(R.string.yesterday);
 689			} else {
 690				viewHolder.status_message.setText(DateUtils.formatDateTime(activity, message.getTimeSent(), DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_SHOW_YEAR));
 691			}
 692			viewHolder.message_box.setBackgroundResource(activity.isDarkTheme() ? R.drawable.date_bubble_grey : R.drawable.date_bubble_white);
 693			return view;
 694		} else if (type == STATUS) {
 695			if ("LOAD_MORE".equals(message.getBody())) {
 696				viewHolder.status_message.setVisibility(View.GONE);
 697				viewHolder.contact_picture.setVisibility(View.GONE);
 698				viewHolder.load_more_messages.setVisibility(View.VISIBLE);
 699				viewHolder.load_more_messages.setOnClickListener(v -> loadMoreMessages((Conversation) message.getConversation()));
 700			} else {
 701				viewHolder.status_message.setVisibility(View.VISIBLE);
 702				viewHolder.load_more_messages.setVisibility(View.GONE);
 703				viewHolder.status_message.setText(message.getBody());
 704				boolean showAvatar;
 705				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 706					showAvatar = true;
 707					loadAvatar(message, viewHolder.contact_picture, activity.getPixel(32));
 708				} else if (message.getCounterpart() != null || message.getTrueCounterpart() != null || (message.getCounterparts() != null && message.getCounterparts().size() > 0)) {
 709					showAvatar = true;
 710					loadAvatar(message, viewHolder.contact_picture, activity.getPixel(32));
 711				} else {
 712					showAvatar = false;
 713				}
 714				if (showAvatar) {
 715					viewHolder.contact_picture.setAlpha(0.5f);
 716					viewHolder.contact_picture.setVisibility(View.VISIBLE);
 717				} else {
 718					viewHolder.contact_picture.setVisibility(View.GONE);
 719				}
 720			}
 721			return view;
 722		} else {
 723			loadAvatar(message, viewHolder.contact_picture, activity.getPixel(48));
 724		}
 725
 726		resetClickListener(viewHolder.message_box, viewHolder.messageBody);
 727
 728		viewHolder.contact_picture.setOnClickListener(v -> {
 729			if (MessageAdapter.this.mOnContactPictureClickedListener != null) {
 730				MessageAdapter.this.mOnContactPictureClickedListener
 731						.onContactPictureClicked(message);
 732			}
 733
 734		});
 735		viewHolder.contact_picture.setOnLongClickListener(v -> {
 736			if (MessageAdapter.this.mOnContactPictureLongClickedListener != null) {
 737				MessageAdapter.this.mOnContactPictureLongClickedListener
 738						.onContactPictureLongClicked(v, message);
 739				return true;
 740			} else {
 741				return false;
 742			}
 743		});
 744
 745		final Transferable transferable = message.getTransferable();
 746		if (message.isDeleted() || (transferable != null && transferable.getStatus() != Transferable.STATUS_UPLOADING)) {
 747			if (transferable != null && transferable.getStatus() == Transferable.STATUS_OFFER) {
 748				displayDownloadableMessage(viewHolder, message, activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, message)));
 749			} else if (transferable != null && transferable.getStatus() == Transferable.STATUS_OFFER_CHECK_FILESIZE) {
 750				displayDownloadableMessage(viewHolder, message, activity.getString(R.string.check_x_filesize, UIHelper.getFileDescriptionString(activity, message)));
 751			} else {
 752				displayInfoMessage(viewHolder, UIHelper.getMessagePreview(activity, message).first, darkBackground);
 753			}
 754		} else if (message.isFileOrImage() && message.getEncryption() != Message.ENCRYPTION_PGP && message.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED) {
 755			if (message.getFileParams().width > 0 && message.getFileParams().height > 0) {
 756				displayImageMessage(viewHolder, message);
 757			} else if (message.getFileParams().runtime > 0) {
 758				displayAudioMessage(viewHolder, message, darkBackground);
 759			} else {
 760				displayOpenableMessage(viewHolder, message);
 761			}
 762		} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 763			if (account.isPgpDecryptionServiceConnected()) {
 764				if (conversation instanceof Conversation && !account.hasPendingPgpIntent((Conversation) conversation)) {
 765					displayInfoMessage(viewHolder, activity.getString(R.string.message_decrypting), darkBackground);
 766				} else {
 767					displayInfoMessage(viewHolder, activity.getString(R.string.pgp_message), darkBackground);
 768				}
 769			} else {
 770				displayInfoMessage(viewHolder, activity.getString(R.string.install_openkeychain), darkBackground);
 771				viewHolder.message_box.setOnClickListener(this::promptOpenKeychainInstall);
 772				viewHolder.messageBody.setOnClickListener(this::promptOpenKeychainInstall);
 773			}
 774		} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
 775			displayInfoMessage(viewHolder, activity.getString(R.string.decryption_failed), darkBackground);
 776		} else if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE) {
 777			displayInfoMessage(viewHolder, activity.getString(R.string.not_encrypted_for_this_device), darkBackground);
 778		} else if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL_FAILED) {
 779			displayInfoMessage(viewHolder, activity.getString(R.string.omemo_decryption_failed), darkBackground);
 780		} else {
 781			if (message.isGeoUri()) {
 782				displayLocationMessage(viewHolder, message);
 783			} else if (message.bodyIsOnlyEmojis() && message.getType() != Message.TYPE_PRIVATE) {
 784				displayEmojiMessage(viewHolder, message.getBody().trim(), darkBackground);
 785			} else if (message.treatAsDownloadable()) {
 786				try {
 787					URL url = new URL(message.getBody());
 788					if (P1S3UrlStreamHandler.PROTOCOL_NAME.equalsIgnoreCase(url.getProtocol())) {
 789						displayDownloadableMessage(viewHolder,
 790								message,
 791								activity.getString(R.string.check_x_filesize,
 792										UIHelper.getFileDescriptionString(activity, message)));
 793					} else {
 794						displayDownloadableMessage(viewHolder,
 795								message,
 796								activity.getString(R.string.check_x_filesize_on_host,
 797										UIHelper.getFileDescriptionString(activity, message),
 798										url.getHost()));
 799					}
 800				} catch (Exception e) {
 801					displayDownloadableMessage(viewHolder,
 802							message,
 803							activity.getString(R.string.check_x_filesize,
 804									UIHelper.getFileDescriptionString(activity, message)));
 805				}
 806			} else {
 807				displayTextMessage(viewHolder, message, darkBackground, type);
 808			}
 809		}
 810
 811		if (type == RECEIVED) {
 812			if (isInValidSession) {
 813				int bubble;
 814				if (!mUseGreenBackground) {
 815					bubble = activity.getThemeResource(R.attr.message_bubble_received_monochrome, R.drawable.message_bubble_received_white);
 816				} else {
 817					bubble = activity.getThemeResource(R.attr.message_bubble_received_green, R.drawable.message_bubble_received);
 818				}
 819				viewHolder.message_box.setBackgroundResource(bubble);
 820				viewHolder.encryption.setVisibility(View.GONE);
 821			} else {
 822				viewHolder.message_box.setBackgroundResource(R.drawable.message_bubble_received_warning);
 823				viewHolder.encryption.setVisibility(View.VISIBLE);
 824				if (omemoEncryption && !message.isTrusted()) {
 825					viewHolder.encryption.setText(R.string.not_trusted);
 826				} else {
 827					viewHolder.encryption.setText(CryptoHelper.encryptionTypeToText(message.getEncryption()));
 828				}
 829			}
 830		}
 831
 832		displayStatus(viewHolder, message, type, darkBackground);
 833
 834		return view;
 835	}
 836
 837	private void promptOpenKeychainInstall(View view) {
 838		activity.showInstallPgpDialog();
 839	}
 840
 841	@Override
 842	public void notifyDataSetChanged() {
 843		listSelectionManager.onBeforeNotifyDataSetChanged();
 844		super.notifyDataSetChanged();
 845		listSelectionManager.onAfterNotifyDataSetChanged();
 846	}
 847
 848	private String transformText(CharSequence text, int start, int end, boolean forCopy) {
 849		SpannableStringBuilder builder = new SpannableStringBuilder(text);
 850		Object copySpan = new Object();
 851		builder.setSpan(copySpan, start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 852		DividerSpan[] dividerSpans = builder.getSpans(0, builder.length(), DividerSpan.class);
 853		for (DividerSpan dividerSpan : dividerSpans) {
 854			builder.replace(builder.getSpanStart(dividerSpan), builder.getSpanEnd(dividerSpan),
 855					dividerSpan.isLarge() ? "\n\n" : "\n");
 856		}
 857		start = builder.getSpanStart(copySpan);
 858		end = builder.getSpanEnd(copySpan);
 859		if (start == -1 || end == -1) return "";
 860		builder = new SpannableStringBuilder(builder, start, end);
 861		if (forCopy) {
 862			QuoteSpan[] quoteSpans = builder.getSpans(0, builder.length(), QuoteSpan.class);
 863			for (QuoteSpan quoteSpan : quoteSpans) {
 864				builder.insert(builder.getSpanStart(quoteSpan), "> ");
 865			}
 866		}
 867		return builder.toString();
 868	}
 869
 870	@Override
 871	public String transformTextForCopy(CharSequence text, int start, int end) {
 872		if (text instanceof Spanned) {
 873			return transformText(text, start, end, true);
 874		} else {
 875			return text.toString().substring(start, end);
 876		}
 877	}
 878
 879	public FileBackend getFileBackend() {
 880		return activity.xmppConnectionService.getFileBackend();
 881	}
 882
 883	public void stopAudioPlayer() {
 884		audioPlayer.stop();
 885	}
 886
 887	public void unregisterListenerInAudioPlayer() {
 888		audioPlayer.unregisterListener();
 889	}
 890
 891	public void startStopPending() {
 892		audioPlayer.startStopPending();
 893	}
 894
 895	public void openDownloadable(Message message) {
 896		if (ContextCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
 897			ConversationFragment.registerPendingMessage(activity, message);
 898			ActivityCompat.requestPermissions(activity, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, ConversationsActivity.REQUEST_OPEN_MESSAGE);
 899			return;
 900		}
 901		final DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
 902		ViewUtil.view(activity, file);
 903	}
 904
 905	private void showLocation(Message message) {
 906		for (Intent intent : GeoHelper.createGeoIntentsFromMessage(activity, message)) {
 907			if (intent.resolveActivity(getContext().getPackageManager()) != null) {
 908				getContext().startActivity(intent);
 909				return;
 910			}
 911		}
 912		Toast.makeText(activity, R.string.no_application_found_to_display_location, Toast.LENGTH_SHORT).show();
 913	}
 914
 915	public void updatePreferences() {
 916		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
 917		this.mIndicateReceived = p.getBoolean("indicate_received", activity.getResources().getBoolean(R.bool.indicate_received));
 918		this.mUseGreenBackground = p.getBoolean("use_green_background", activity.getResources().getBoolean(R.bool.use_green_background));
 919	}
 920
 921	private void loadAvatar(Message message, ImageView imageView, int size) {
 922		if (cancelPotentialWork(message, imageView)) {
 923			final Bitmap bm = activity.avatarService().get(message, size, true);
 924			if (bm != null) {
 925				cancelPotentialWork(message, imageView);
 926				imageView.setImageBitmap(bm);
 927				imageView.setBackgroundColor(Color.TRANSPARENT);
 928			} else {
 929				@ColorInt int bg;
 930				if (message.getType() == Message.TYPE_STATUS && message.getCounterparts() != null && message.getCounterparts().size() > 1) {
 931					bg = Color.TRANSPARENT;
 932				} else {
 933					bg = UIHelper.getColorForName(UIHelper.getMessageDisplayName(message));
 934				}
 935				imageView.setBackgroundColor(bg);
 936				imageView.setImageDrawable(null);
 937				final BitmapWorkerTask task = new BitmapWorkerTask(imageView, size);
 938				final AsyncDrawable asyncDrawable = new AsyncDrawable(activity.getResources(), null, task);
 939				imageView.setImageDrawable(asyncDrawable);
 940				try {
 941					task.execute(message);
 942				} catch (final RejectedExecutionException ignored) {
 943				}
 944			}
 945		}
 946	}
 947
 948	public void setHighlightedTerm(List<String> terms) {
 949		this.highlightedTerm = terms == null ? null : StylingHelper.filterHighlightedWords(terms);
 950	}
 951
 952	public interface OnQuoteListener {
 953		void onQuote(String text);
 954	}
 955
 956	public interface OnContactPictureClicked {
 957		void onContactPictureClicked(Message message);
 958	}
 959
 960	public interface OnContactPictureLongClicked {
 961		void onContactPictureLongClicked(View v, Message message);
 962	}
 963
 964	private static class ViewHolder {
 965
 966		public Button load_more_messages;
 967		public ImageView edit_indicator;
 968		public RelativeLayout audioPlayer;
 969		protected LinearLayout message_box;
 970		protected Button download_button;
 971		protected ImageView image;
 972		protected ImageView indicator;
 973		protected ImageView indicatorReceived;
 974		protected TextView time;
 975		protected CopyTextView messageBody;
 976		protected ImageView contact_picture;
 977		protected TextView status_message;
 978		protected TextView encryption;
 979	}
 980
 981	static class AsyncDrawable extends BitmapDrawable {
 982		private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
 983
 984		public AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
 985			super(res, bitmap);
 986			bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
 987		}
 988
 989		public BitmapWorkerTask getBitmapWorkerTask() {
 990			return bitmapWorkerTaskReference.get();
 991		}
 992	}
 993
 994	private class MessageBodyActionModeCallback implements ActionMode.Callback {
 995
 996		private final TextView textView;
 997
 998		public MessageBodyActionModeCallback(TextView textView) {
 999			this.textView = textView;
1000		}
1001
1002		@Override
1003		public boolean onCreateActionMode(ActionMode mode, Menu menu) {
1004			if (onQuoteListener != null) {
1005				int quoteResId = activity.getThemeResource(R.attr.icon_quote, R.drawable.ic_action_reply);
1006				// 3rd item is placed after "copy" item
1007				menu.add(0, android.R.id.button1, 3, R.string.quote).setIcon(quoteResId)
1008						.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
1009			}
1010			return false;
1011		}
1012
1013		@Override
1014		public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
1015			return false;
1016		}
1017
1018		@Override
1019		public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
1020			if (item.getItemId() == android.R.id.button1) {
1021				int start = textView.getSelectionStart();
1022				int end = textView.getSelectionEnd();
1023				if (end > start) {
1024					String text = transformText(textView.getText(), start, end, false);
1025					if (onQuoteListener != null) {
1026						onQuoteListener.onQuote(text);
1027					}
1028					mode.finish();
1029				}
1030				return true;
1031			}
1032			return false;
1033		}
1034
1035		@Override
1036		public void onDestroyActionMode(ActionMode mode) {
1037		}
1038	}
1039
1040	private static class BitmapWorkerTask extends AsyncTask<Message, Void, Bitmap> {
1041		private final WeakReference<ImageView> imageViewReference;
1042		private final int size;
1043		private Message message = null;
1044
1045		BitmapWorkerTask(ImageView imageView, int size) {
1046			imageViewReference = new WeakReference<>(imageView);
1047			this.size = size;
1048		}
1049
1050		@Override
1051		protected Bitmap doInBackground(Message... params) {
1052			this.message = params[0];
1053			final XmppActivity activity = XmppActivity.find(imageViewReference);
1054			if (activity == null) {
1055				return null;
1056			}
1057			return activity.avatarService().get(this.message, size, isCancelled());
1058		}
1059
1060		@Override
1061		protected void onPostExecute(Bitmap bitmap) {
1062			if (bitmap != null && !isCancelled()) {
1063				final ImageView imageView = imageViewReference.get();
1064				if (imageView != null) {
1065					imageView.setImageBitmap(bitmap);
1066					imageView.setBackgroundColor(0x00000000);
1067				}
1068			}
1069		}
1070	}
1071}