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.View.OnLongClickListener;
  39import android.view.ViewGroup;
  40import android.view.WindowManager;
  41import android.widget.ArrayAdapter;
  42import android.widget.Button;
  43import android.widget.ImageView;
  44import android.widget.LinearLayout;
  45import android.widget.RelativeLayout;
  46import android.widget.TextView;
  47import android.widget.Toast;
  48
  49import java.lang.ref.WeakReference;
  50import java.net.URL;
  51import java.util.List;
  52import java.util.Locale;
  53import java.util.concurrent.RejectedExecutionException;
  54import java.util.regex.Matcher;
  55import java.util.regex.Pattern;
  56
  57import eu.siacs.conversations.Config;
  58import eu.siacs.conversations.R;
  59import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  60import eu.siacs.conversations.entities.Account;
  61import eu.siacs.conversations.entities.Conversation;
  62import eu.siacs.conversations.entities.DownloadableFile;
  63import eu.siacs.conversations.entities.Message;
  64import eu.siacs.conversations.entities.Message.FileParams;
  65import eu.siacs.conversations.entities.Transferable;
  66import eu.siacs.conversations.persistance.FileBackend;
  67import eu.siacs.conversations.services.MessageArchiveService;
  68import eu.siacs.conversations.services.NotificationService;
  69import eu.siacs.conversations.ui.ConversationActivity;
  70import eu.siacs.conversations.ui.ConversationFragment;
  71import eu.siacs.conversations.ui.XmppActivity;
  72import eu.siacs.conversations.ui.service.AudioPlayer;
  73import eu.siacs.conversations.ui.text.DividerSpan;
  74import eu.siacs.conversations.ui.text.FixedURLSpan;
  75import eu.siacs.conversations.ui.text.QuoteSpan;
  76import eu.siacs.conversations.ui.widget.ClickableMovementMethod;
  77import eu.siacs.conversations.ui.widget.CopyTextView;
  78import eu.siacs.conversations.ui.widget.ListSelectionManager;
  79import eu.siacs.conversations.utils.CryptoHelper;
  80import eu.siacs.conversations.utils.EmojiWrapper;
  81import eu.siacs.conversations.utils.Emoticons;
  82import eu.siacs.conversations.utils.GeoHelper;
  83import eu.siacs.conversations.utils.Patterns;
  84import eu.siacs.conversations.utils.StylingHelper;
  85import eu.siacs.conversations.utils.UIHelper;
  86import eu.siacs.conversations.utils.XmppUri;
  87import eu.siacs.conversations.xmpp.mam.MamReference;
  88
  89public class MessageAdapter extends ArrayAdapter<Message> implements CopyTextView.CopyHandler {
  90
  91	public static final String DATE_SEPARATOR_BODY = "DATE_SEPARATOR";
  92	private static final int SENT = 0;
  93	private static final int RECEIVED = 1;
  94	private static final int STATUS = 2;
  95	private static final int DATE_SEPARATOR = 3;
  96	private static final Pattern XMPP_PATTERN = Pattern
  97			.compile("xmpp\\:(?:(?:["
  98					+ Patterns.GOOD_IRI_CHAR
  99					+ "\\;\\/\\?\\@\\&\\=\\#\\~\\-\\.\\+\\!\\*\\'\\(\\)\\,\\_])"
 100					+ "|(?:\\%[a-fA-F0-9]{2}))+");
 101
 102	private static final Linkify.TransformFilter WEBURL_TRANSFORM_FILTER = new Linkify.TransformFilter() {
 103		@Override
 104		public String transformUrl(Matcher matcher, String url) {
 105			if (url == null) {
 106				return null;
 107			}
 108			final String lcUrl = url.toLowerCase(Locale.US);
 109			if (lcUrl.startsWith("http://") || lcUrl.startsWith("https://")) {
 110				return url;
 111			} else {
 112				return "http://" + url;
 113			}
 114		}
 115	};
 116	private static final Linkify.MatchFilter WEBURL_MATCH_FILTER = new Linkify.MatchFilter() {
 117		@Override
 118		public boolean acceptMatch(CharSequence cs, int start, int end) {
 119			return start < 1 || (cs.charAt(start - 1) != '@' && cs.charAt(start - 1) != '.' && !cs.subSequence(Math.max(0, start - 3), start).equals("://"));
 120		}
 121	};
 122
 123	private static final Linkify.MatchFilter XMPPURI_MATCH_FILTER = new Linkify.MatchFilter() {
 124		@Override
 125		public boolean acceptMatch(CharSequence s, int start, int end) {
 126			XmppUri uri = new XmppUri(s.subSequence(start, end).toString());
 127			return uri.isJidValid();
 128		}
 129	};
 130
 131	private final XmppActivity activity;
 132	private final ListSelectionManager listSelectionManager = new ListSelectionManager();
 133	private final AudioPlayer audioPlayer;
 134	private DisplayMetrics metrics;
 135	private OnContactPictureClicked mOnContactPictureClickedListener;
 136	private OnContactPictureLongClicked mOnContactPictureLongClickedListener;
 137	private boolean mIndicateReceived = false;
 138	private boolean mUseGreenBackground = false;
 139	private OnQuoteListener onQuoteListener;
 140
 141	public MessageAdapter(XmppActivity activity, List<Message> messages) {
 142		super(activity, 0, messages);
 143		this.audioPlayer = new AudioPlayer(this);
 144		this.activity = activity;
 145		metrics = getContext().getResources().getDisplayMetrics();
 146		updatePreferences();
 147	}
 148
 149	public static boolean cancelPotentialWork(Message message, ImageView imageView) {
 150		final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
 151
 152		if (bitmapWorkerTask != null) {
 153			final Message oldMessage = bitmapWorkerTask.message;
 154			if (oldMessage == null || message != oldMessage) {
 155				bitmapWorkerTask.cancel(true);
 156			} else {
 157				return false;
 158			}
 159		}
 160		return true;
 161	}
 162
 163	private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
 164		if (imageView != null) {
 165			final Drawable drawable = imageView.getDrawable();
 166			if (drawable instanceof AsyncDrawable) {
 167				final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
 168				return asyncDrawable.getBitmapWorkerTask();
 169			}
 170		}
 171		return null;
 172	}
 173
 174	public void flagScreenOn() {
 175		activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
 176	}
 177
 178	public void flagScreenOff() {
 179		activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
 180	}
 181
 182	public void setOnContactPictureClicked(OnContactPictureClicked listener) {
 183		this.mOnContactPictureClickedListener = listener;
 184	}
 185
 186	public Activity getActivity() {
 187		return activity;
 188	}
 189
 190	public void setOnContactPictureLongClicked(
 191			OnContactPictureLongClicked listener) {
 192		this.mOnContactPictureLongClickedListener = listener;
 193	}
 194
 195	public void setOnQuoteListener(OnQuoteListener listener) {
 196		this.onQuoteListener = listener;
 197	}
 198
 199	@Override
 200	public int getViewTypeCount() {
 201		return 4;
 202	}
 203
 204	public int getItemViewType(Message message) {
 205		if (message.getType() == Message.TYPE_STATUS) {
 206			if (DATE_SEPARATOR_BODY.equals(message.getBody())) {
 207				return DATE_SEPARATOR;
 208			} else {
 209				return STATUS;
 210			}
 211		} else if (message.getStatus() <= Message.STATUS_RECEIVED) {
 212			return RECEIVED;
 213		}
 214
 215		return SENT;
 216	}
 217
 218	@Override
 219	public int getItemViewType(int position) {
 220		return this.getItemViewType(getItem(position));
 221	}
 222
 223	public int getMessageTextColor(boolean onDark, boolean primary) {
 224		if (onDark) {
 225			return ContextCompat.getColor(activity, primary ? R.color.white : R.color.white70);
 226		} else {
 227			return ContextCompat.getColor(activity, primary ? R.color.black87 : R.color.black54);
 228		}
 229	}
 230
 231	private void displayStatus(ViewHolder viewHolder, Message message, int type, boolean darkBackground) {
 232		String filesize = null;
 233		String info = null;
 234		boolean error = false;
 235		if (viewHolder.indicatorReceived != null) {
 236			viewHolder.indicatorReceived.setVisibility(View.GONE);
 237		}
 238
 239		if (viewHolder.edit_indicator != null) {
 240			if (message.edited()) {
 241				viewHolder.edit_indicator.setVisibility(View.VISIBLE);
 242				viewHolder.edit_indicator.setImageResource(darkBackground ? R.drawable.ic_mode_edit_white_18dp : R.drawable.ic_mode_edit_black_18dp);
 243				viewHolder.edit_indicator.setAlpha(darkBackground ? 0.7f : 0.57f);
 244			} else {
 245				viewHolder.edit_indicator.setVisibility(View.GONE);
 246			}
 247		}
 248		boolean multiReceived = message.getConversation().getMode() == Conversation.MODE_MULTI
 249				&& message.getMergedStatus() <= Message.STATUS_RECEIVED;
 250		if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE || message.getTransferable() != null) {
 251			FileParams params = message.getFileParams();
 252			if (params.size > (1.5 * 1024 * 1024)) {
 253				filesize = Math.round(params.size * 1f / (1024 * 1024)) + " MiB";
 254			} else if (params.size >= 1024) {
 255				filesize = Math.round(params.size * 1f / 1024) + " KiB";
 256			} else if (params.size > 0) {
 257				filesize = params.size + " B";
 258			}
 259			if (message.getTransferable() != null && message.getTransferable().getStatus() == Transferable.STATUS_FAILED) {
 260				error = true;
 261			}
 262		}
 263		switch (message.getMergedStatus()) {
 264			case Message.STATUS_WAITING:
 265				info = getContext().getString(R.string.waiting);
 266				break;
 267			case Message.STATUS_UNSEND:
 268				Transferable d = message.getTransferable();
 269				if (d != null) {
 270					info = getContext().getString(R.string.sending_file, d.getProgress());
 271				} else {
 272					info = getContext().getString(R.string.sending);
 273				}
 274				break;
 275			case Message.STATUS_OFFERED:
 276				info = getContext().getString(R.string.offering);
 277				break;
 278			case Message.STATUS_SEND_RECEIVED:
 279				if (mIndicateReceived) {
 280					viewHolder.indicatorReceived.setVisibility(View.VISIBLE);
 281				}
 282				break;
 283			case Message.STATUS_SEND_DISPLAYED:
 284				if (mIndicateReceived) {
 285					viewHolder.indicatorReceived.setVisibility(View.VISIBLE);
 286				}
 287				break;
 288			case Message.STATUS_SEND_FAILED:
 289				info = getContext().getString(R.string.send_failed);
 290				error = true;
 291				break;
 292			default:
 293				if (multiReceived) {
 294					info = UIHelper.getMessageDisplayName(message);
 295				}
 296				break;
 297		}
 298		if (error && type == SENT) {
 299			viewHolder.time.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Caption_Waring);
 300		} else {
 301			if (darkBackground) {
 302				viewHolder.time.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Caption_OnDark);
 303			} else {
 304				viewHolder.time.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Caption);
 305			}
 306			viewHolder.time.setTextColor(this.getMessageTextColor(darkBackground, false));
 307		}
 308		if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 309			viewHolder.indicator.setVisibility(View.GONE);
 310		} else {
 311			boolean verified = false;
 312			if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
 313				final FingerprintStatus status = message.getConversation()
 314						.getAccount().getAxolotlService().getFingerprintTrust(
 315								message.getFingerprint());
 316				if (status != null && status.isVerified()) {
 317					verified = true;
 318				}
 319			}
 320			if (verified) {
 321				viewHolder.indicator.setImageResource(darkBackground ? R.drawable.ic_verified_user_white_18dp : R.drawable.ic_verified_user_black_18dp);
 322			} else {
 323				viewHolder.indicator.setImageResource(darkBackground ? R.drawable.ic_lock_white_18dp : R.drawable.ic_lock_black_18dp);
 324			}
 325			if (darkBackground) {
 326				viewHolder.indicator.setAlpha(0.7f);
 327			} else {
 328				viewHolder.indicator.setAlpha(0.57f);
 329			}
 330			viewHolder.indicator.setVisibility(View.VISIBLE);
 331		}
 332
 333		String formatedTime = UIHelper.readableTimeDifferenceFull(getContext(), message.getMergedTimeSent());
 334		if (message.getStatus() <= Message.STATUS_RECEIVED) {
 335			if ((filesize != null) && (info != null)) {
 336				viewHolder.time.setText(formatedTime + " \u00B7 " + filesize + " \u00B7 " + info);
 337			} else if ((filesize == null) && (info != null)) {
 338				viewHolder.time.setText(formatedTime + " \u00B7 " + info);
 339			} else if ((filesize != null) && (info == null)) {
 340				viewHolder.time.setText(formatedTime + " \u00B7 " + filesize);
 341			} else {
 342				viewHolder.time.setText(formatedTime);
 343			}
 344		} else {
 345			if ((filesize != null) && (info != null)) {
 346				viewHolder.time.setText(filesize + " \u00B7 " + info);
 347			} else if ((filesize == null) && (info != null)) {
 348				if (error) {
 349					viewHolder.time.setText(info + " \u00B7 " + formatedTime);
 350				} else {
 351					viewHolder.time.setText(info);
 352				}
 353			} else if ((filesize != null) && (info == null)) {
 354				viewHolder.time.setText(filesize + " \u00B7 " + formatedTime);
 355			} else {
 356				viewHolder.time.setText(formatedTime);
 357			}
 358		}
 359	}
 360
 361	private void displayInfoMessage(ViewHolder viewHolder, String text, boolean darkBackground) {
 362		viewHolder.download_button.setVisibility(View.GONE);
 363		viewHolder.audioPlayer.setVisibility(View.GONE);
 364		viewHolder.image.setVisibility(View.GONE);
 365		viewHolder.messageBody.setVisibility(View.VISIBLE);
 366		viewHolder.messageBody.setText(text);
 367		if (darkBackground) {
 368			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Secondary_OnDark);
 369		} else {
 370			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Secondary);
 371		}
 372		viewHolder.messageBody.setTextIsSelectable(false);
 373	}
 374
 375	private void displayDecryptionFailed(ViewHolder viewHolder, boolean darkBackground) {
 376		viewHolder.download_button.setVisibility(View.GONE);
 377		viewHolder.image.setVisibility(View.GONE);
 378		viewHolder.audioPlayer.setVisibility(View.GONE);
 379		viewHolder.messageBody.setVisibility(View.VISIBLE);
 380		if (darkBackground) {
 381			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Secondary_OnDark);
 382		} else {
 383			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Secondary);
 384		}
 385		viewHolder.messageBody.setTextIsSelectable(false);
 386	}
 387
 388	private void displayEmojiMessage(final ViewHolder viewHolder, final String body) {
 389		viewHolder.download_button.setVisibility(View.GONE);
 390		viewHolder.audioPlayer.setVisibility(View.GONE);
 391		viewHolder.image.setVisibility(View.GONE);
 392		viewHolder.messageBody.setVisibility(View.VISIBLE);
 393		Spannable span = new SpannableString(body);
 394		float size = Emoticons.isEmoji(body) ? 3.0f : 2.0f;
 395		span.setSpan(new RelativeSizeSpan(size), 0, body.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 396		viewHolder.messageBody.setText(EmojiWrapper.transform(span));
 397	}
 398
 399	private int applyQuoteSpan(SpannableStringBuilder body, int start, int end, boolean darkBackground) {
 400		if (start > 1 && !"\n\n".equals(body.subSequence(start - 2, start).toString())) {
 401			body.insert(start++, "\n");
 402			body.setSpan(new DividerSpan(false), start - 2, start, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 403			end++;
 404		}
 405		if (end < body.length() - 1 && !"\n\n".equals(body.subSequence(end, end + 2).toString())) {
 406			body.insert(end, "\n");
 407			body.setSpan(new DividerSpan(false), end, end + 2, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 408		}
 409		int color = darkBackground ? this.getMessageTextColor(darkBackground, false)
 410				: ContextCompat.getColor(activity, R.color.bubble);
 411		DisplayMetrics metrics = getContext().getResources().getDisplayMetrics();
 412		body.setSpan(new QuoteSpan(color, metrics), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 413		return 0;
 414	}
 415
 416	/**
 417	 * Applies QuoteSpan to group of lines which starts with > or » characters.
 418	 * Appends likebreaks and applies DividerSpan to them to show a padding between quote and text.
 419	 */
 420	private boolean handleTextQuotes(SpannableStringBuilder body, boolean darkBackground) {
 421		boolean startsWithQuote = false;
 422		char previous = '\n';
 423		int lineStart = -1;
 424		int lineTextStart = -1;
 425		int quoteStart = -1;
 426		for (int i = 0; i <= body.length(); i++) {
 427			char current = body.length() > i ? body.charAt(i) : '\n';
 428			if (lineStart == -1) {
 429				if (previous == '\n') {
 430					if ((current == '>' && UIHelper.isPositionFollowedByQuoteableCharacter(body, i))
 431							|| current == '\u00bb' && !UIHelper.isPositionFollowedByQuote(body, i)) {
 432						// Line start with quote
 433						lineStart = i;
 434						if (quoteStart == -1) quoteStart = i;
 435						if (i == 0) startsWithQuote = true;
 436					} else if (quoteStart >= 0) {
 437						// Line start without quote, apply spans there
 438						applyQuoteSpan(body, quoteStart, i - 1, darkBackground);
 439						quoteStart = -1;
 440					}
 441				}
 442			} else {
 443				// Remove extra spaces between > and first character in the line
 444				// > character will be removed too
 445				if (current != ' ' && lineTextStart == -1) {
 446					lineTextStart = i;
 447				}
 448				if (current == '\n') {
 449					body.delete(lineStart, lineTextStart);
 450					i -= lineTextStart - lineStart;
 451					if (i == lineStart) {
 452						// Avoid empty lines because span over empty line can be hidden
 453						body.insert(i++, " ");
 454					}
 455					lineStart = -1;
 456					lineTextStart = -1;
 457				}
 458			}
 459			previous = current;
 460		}
 461		if (quoteStart >= 0) {
 462			// Apply spans to finishing open quote
 463			applyQuoteSpan(body, quoteStart, body.length(), darkBackground);
 464		}
 465		return startsWithQuote;
 466	}
 467
 468	private void displayTextMessage(final ViewHolder viewHolder, final Message message, boolean darkBackground, int type) {
 469		viewHolder.download_button.setVisibility(View.GONE);
 470		viewHolder.image.setVisibility(View.GONE);
 471		viewHolder.audioPlayer.setVisibility(View.GONE);
 472		viewHolder.messageBody.setVisibility(View.VISIBLE);
 473
 474		if (darkBackground) {
 475			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_OnDark);
 476		} else {
 477			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1);
 478		}
 479		viewHolder.messageBody.setHighlightColor(ContextCompat.getColor(activity, darkBackground
 480				? (type == SENT || !mUseGreenBackground ? R.color.black26 : R.color.grey800) : R.color.grey500));
 481		viewHolder.messageBody.setTypeface(null, Typeface.NORMAL);
 482
 483		if (message.getBody() != null) {
 484			final String nick = UIHelper.getMessageDisplayName(message);
 485			SpannableStringBuilder body = message.getMergedBody();
 486			boolean hasMeCommand = message.hasMeCommand();
 487			if (hasMeCommand) {
 488				body = body.replace(0, Message.ME_COMMAND.length(), nick + " ");
 489			}
 490			if (body.length() > Config.MAX_DISPLAY_MESSAGE_CHARS) {
 491				body = new SpannableStringBuilder(body, 0, Config.MAX_DISPLAY_MESSAGE_CHARS);
 492				body.append("\u2026");
 493			}
 494			Message.MergeSeparator[] mergeSeparators = body.getSpans(0, body.length(), Message.MergeSeparator.class);
 495			for (Message.MergeSeparator mergeSeparator : mergeSeparators) {
 496				int start = body.getSpanStart(mergeSeparator);
 497				int end = body.getSpanEnd(mergeSeparator);
 498				body.setSpan(new DividerSpan(true), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 499			}
 500			boolean startsWithQuote = handleTextQuotes(body, darkBackground);
 501			if (message.getType() != Message.TYPE_PRIVATE) {
 502				if (hasMeCommand) {
 503					body.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), 0, nick.length(),
 504							Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 505				}
 506			} else {
 507				String privateMarker;
 508				if (message.getStatus() <= Message.STATUS_RECEIVED) {
 509					privateMarker = activity.getString(R.string.private_message);
 510				} else {
 511					final String to;
 512					if (message.getCounterpart() != null) {
 513						to = message.getCounterpart().getResource();
 514					} else {
 515						to = "";
 516					}
 517					privateMarker = activity.getString(R.string.private_message_to, to);
 518				}
 519				body.insert(0, privateMarker);
 520				int privateMarkerIndex = privateMarker.length();
 521				if (startsWithQuote) {
 522					body.insert(privateMarkerIndex, "\n\n");
 523					body.setSpan(new DividerSpan(false), privateMarkerIndex, privateMarkerIndex + 2,
 524							Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 525				} else {
 526					body.insert(privateMarkerIndex, " ");
 527				}
 528				body.setSpan(new ForegroundColorSpan(getMessageTextColor(darkBackground, false)), 0, privateMarkerIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 529				body.setSpan(new StyleSpan(Typeface.BOLD), 0, privateMarkerIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 530				if (hasMeCommand) {
 531					body.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), privateMarkerIndex + 1,
 532							privateMarkerIndex + 1 + nick.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 533				}
 534			}
 535			if (message.getConversation().getMode() == Conversation.MODE_MULTI && message.getStatus() == Message.STATUS_RECEIVED) {
 536				Pattern pattern = NotificationService.generateNickHighlightPattern(message.getConversation().getMucOptions().getActualNick());
 537				Matcher matcher = pattern.matcher(body);
 538				while (matcher.find()) {
 539					body.setSpan(new StyleSpan(Typeface.BOLD), matcher.start(), matcher.end(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 540				}
 541			}
 542			Matcher matcher = Emoticons.generatePattern(body).matcher(body);
 543			while (matcher.find()) {
 544				if (matcher.start() < matcher.end()) {
 545					body.setSpan(new RelativeSizeSpan(1.2f), matcher.start(), matcher.end(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 546				}
 547			}
 548
 549			StylingHelper.format(body, viewHolder.messageBody.getCurrentTextColor());
 550
 551			Linkify.addLinks(body, XMPP_PATTERN, "xmpp", XMPPURI_MATCH_FILTER, null);
 552			Linkify.addLinks(body, Patterns.AUTOLINK_WEB_URL, "http", WEBURL_MATCH_FILTER, WEBURL_TRANSFORM_FILTER);
 553			Linkify.addLinks(body, GeoHelper.GEO_URI, "geo");
 554			FixedURLSpan.fix(body);
 555			viewHolder.messageBody.setAutoLinkMask(0);
 556			viewHolder.messageBody.setText(EmojiWrapper.transform(body));
 557			viewHolder.messageBody.setTextIsSelectable(true);
 558			viewHolder.messageBody.setMovementMethod(ClickableMovementMethod.getInstance());
 559			listSelectionManager.onUpdate(viewHolder.messageBody, message);
 560		} else {
 561			viewHolder.messageBody.setText("");
 562			viewHolder.messageBody.setTextIsSelectable(false);
 563		}
 564	}
 565
 566	private void displayDownloadableMessage(ViewHolder viewHolder, final Message message, String text) {
 567		viewHolder.image.setVisibility(View.GONE);
 568		viewHolder.messageBody.setVisibility(View.GONE);
 569		viewHolder.audioPlayer.setVisibility(View.GONE);
 570		viewHolder.download_button.setVisibility(View.VISIBLE);
 571		viewHolder.download_button.setText(text);
 572		viewHolder.download_button.setOnClickListener(v -> ConversationFragment.downloadFile(activity, message));
 573	}
 574
 575	private void displayOpenableMessage(ViewHolder viewHolder, final Message message) {
 576		viewHolder.image.setVisibility(View.GONE);
 577		viewHolder.messageBody.setVisibility(View.GONE);
 578		viewHolder.audioPlayer.setVisibility(View.GONE);
 579		viewHolder.download_button.setVisibility(View.VISIBLE);
 580		viewHolder.download_button.setText(activity.getString(R.string.open_x_file, UIHelper.getFileDescriptionString(activity, message)));
 581		viewHolder.download_button.setOnClickListener(v -> openDownloadable(message));
 582	}
 583
 584	private void displayLocationMessage(ViewHolder viewHolder, final Message message) {
 585		viewHolder.image.setVisibility(View.GONE);
 586		viewHolder.messageBody.setVisibility(View.GONE);
 587		viewHolder.audioPlayer.setVisibility(View.GONE);
 588		viewHolder.download_button.setVisibility(View.VISIBLE);
 589		viewHolder.download_button.setText(R.string.show_location);
 590		viewHolder.download_button.setOnClickListener(v -> showLocation(message));
 591	}
 592
 593	private void displayAudioMessage(ViewHolder viewHolder, Message message, boolean darkBackground) {
 594		viewHolder.image.setVisibility(View.GONE);
 595		viewHolder.messageBody.setVisibility(View.GONE);
 596		viewHolder.download_button.setVisibility(View.GONE);
 597		final RelativeLayout audioPlayer = viewHolder.audioPlayer;
 598		audioPlayer.setVisibility(View.VISIBLE);
 599		AudioPlayer.ViewHolder.get(audioPlayer).setDarkBackground(darkBackground);
 600		this.audioPlayer.init(audioPlayer, message);
 601	}
 602
 603	private void displayImageMessage(ViewHolder viewHolder, final Message message) {
 604		viewHolder.download_button.setVisibility(View.GONE);
 605		viewHolder.messageBody.setVisibility(View.GONE);
 606		viewHolder.audioPlayer.setVisibility(View.GONE);
 607		viewHolder.image.setVisibility(View.VISIBLE);
 608		FileParams params = message.getFileParams();
 609		double target = metrics.density * 288;
 610		int scaledW;
 611		int scaledH;
 612		if (Math.max(params.height, params.width) * metrics.density <= target) {
 613			scaledW = (int) (params.width * metrics.density);
 614			scaledH = (int) (params.height * metrics.density);
 615		} else if (Math.max(params.height, params.width) <= target) {
 616			scaledW = params.width;
 617			scaledH = params.height;
 618		} else if (params.width <= params.height) {
 619			scaledW = (int) (params.width / ((double) params.height / target));
 620			scaledH = (int) target;
 621		} else {
 622			scaledW = (int) target;
 623			scaledH = (int) (params.height / ((double) params.width / target));
 624		}
 625		LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(scaledW, scaledH);
 626		layoutParams.setMargins(0, (int) (metrics.density * 4), 0, (int) (metrics.density * 4));
 627		viewHolder.image.setLayoutParams(layoutParams);
 628		activity.loadBitmap(message, viewHolder.image);
 629		viewHolder.image.setOnClickListener(v -> openDownloadable(message));
 630	}
 631
 632	private void loadMoreMessages(Conversation conversation) {
 633		conversation.setLastClearHistory(0, null);
 634		activity.xmppConnectionService.updateConversation(conversation);
 635		conversation.setHasMessagesLeftOnServer(true);
 636		conversation.setFirstMamReference(null);
 637		long timestamp = conversation.getLastMessageTransmitted().getTimestamp();
 638		if (timestamp == 0) {
 639			timestamp = System.currentTimeMillis();
 640		}
 641		conversation.messagesLoaded.set(true);
 642		MessageArchiveService.Query query = activity.xmppConnectionService.getMessageArchiveService().query(conversation, new MamReference(0), timestamp, false);
 643		if (query != null) {
 644			Toast.makeText(activity, R.string.fetching_history_from_server, Toast.LENGTH_LONG).show();
 645		} else {
 646			Toast.makeText(activity, R.string.not_fetching_history_retention_period, Toast.LENGTH_SHORT).show();
 647		}
 648	}
 649
 650	@Override
 651	public View getView(int position, View view, ViewGroup parent) {
 652		final Message message = getItem(position);
 653		final boolean omemoEncryption = message.getEncryption() == Message.ENCRYPTION_AXOLOTL;
 654		final boolean isInValidSession = message.isValidInSession() && (!omemoEncryption || message.isTrusted());
 655		final Conversation conversation = message.getConversation();
 656		final Account account = conversation.getAccount();
 657		final int type = getItemViewType(position);
 658		ViewHolder viewHolder;
 659		if (view == null) {
 660			viewHolder = new ViewHolder();
 661			switch (type) {
 662				case DATE_SEPARATOR:
 663					view = activity.getLayoutInflater().inflate(R.layout.message_date_bubble, parent, false);
 664					viewHolder.status_message = view.findViewById(R.id.message_body);
 665					viewHolder.message_box = view.findViewById(R.id.message_box);
 666					break;
 667				case SENT:
 668					view = activity.getLayoutInflater().inflate(R.layout.message_sent, parent, false);
 669					viewHolder.message_box = view.findViewById(R.id.message_box);
 670					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 671					viewHolder.download_button = view.findViewById(R.id.download_button);
 672					viewHolder.indicator = view.findViewById(R.id.security_indicator);
 673					viewHolder.edit_indicator = view.findViewById(R.id.edit_indicator);
 674					viewHolder.image = view.findViewById(R.id.message_image);
 675					viewHolder.messageBody = view.findViewById(R.id.message_body);
 676					viewHolder.time = view.findViewById(R.id.message_time);
 677					viewHolder.indicatorReceived = view.findViewById(R.id.indicator_received);
 678					viewHolder.audioPlayer = view.findViewById(R.id.audio_player);
 679					break;
 680				case RECEIVED:
 681					view = activity.getLayoutInflater().inflate(R.layout.message_received, parent, false);
 682					viewHolder.message_box = view.findViewById(R.id.message_box);
 683					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 684					viewHolder.download_button = view.findViewById(R.id.download_button);
 685					viewHolder.indicator = view.findViewById(R.id.security_indicator);
 686					viewHolder.edit_indicator = view.findViewById(R.id.edit_indicator);
 687					viewHolder.image = view.findViewById(R.id.message_image);
 688					viewHolder.messageBody = view.findViewById(R.id.message_body);
 689					viewHolder.time = view.findViewById(R.id.message_time);
 690					viewHolder.indicatorReceived = view.findViewById(R.id.indicator_received);
 691					viewHolder.encryption = view.findViewById(R.id.message_encryption);
 692					viewHolder.audioPlayer = view.findViewById(R.id.audio_player);
 693					break;
 694				case STATUS:
 695					view = activity.getLayoutInflater().inflate(R.layout.message_status, parent, false);
 696					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 697					viewHolder.status_message = view.findViewById(R.id.status_message);
 698					viewHolder.load_more_messages = view.findViewById(R.id.load_more_messages);
 699					break;
 700				default:
 701					throw new AssertionError("Unknown view type");
 702			}
 703			if (viewHolder.messageBody != null) {
 704				listSelectionManager.onCreate(viewHolder.messageBody,
 705						new MessageBodyActionModeCallback(viewHolder.messageBody));
 706				viewHolder.messageBody.setCopyHandler(this);
 707			}
 708			view.setTag(viewHolder);
 709		} else {
 710			viewHolder = (ViewHolder) view.getTag();
 711			if (viewHolder == null) {
 712				return view;
 713			}
 714		}
 715
 716		boolean darkBackground = type == RECEIVED && (!isInValidSession || mUseGreenBackground) || activity.isDarkTheme();
 717
 718		if (type == DATE_SEPARATOR) {
 719			if (UIHelper.today(message.getTimeSent())) {
 720				viewHolder.status_message.setText(R.string.today);
 721			} else if (UIHelper.yesterday(message.getTimeSent())) {
 722				viewHolder.status_message.setText(R.string.yesterday);
 723			} else {
 724				viewHolder.status_message.setText(DateUtils.formatDateTime(activity, message.getTimeSent(), DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_SHOW_YEAR));
 725			}
 726			viewHolder.message_box.setBackgroundResource(activity.isDarkTheme() ? R.drawable.date_bubble_grey : R.drawable.date_bubble_white);
 727			return view;
 728		} else if (type == STATUS) {
 729			if ("LOAD_MORE".equals(message.getBody())) {
 730				viewHolder.status_message.setVisibility(View.GONE);
 731				viewHolder.contact_picture.setVisibility(View.GONE);
 732				viewHolder.load_more_messages.setVisibility(View.VISIBLE);
 733				viewHolder.load_more_messages.setOnClickListener(v -> loadMoreMessages(message.getConversation()));
 734			} else {
 735				viewHolder.status_message.setVisibility(View.VISIBLE);
 736				viewHolder.load_more_messages.setVisibility(View.GONE);
 737				viewHolder.status_message.setText(message.getBody());
 738				boolean showAvatar;
 739				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 740					showAvatar = true;
 741					loadAvatar(message, viewHolder.contact_picture, activity.getPixel(32));
 742				} else if (message.getCounterpart() != null || message.getTrueCounterpart() != null || (message.getCounterparts() != null && message.getCounterparts().size() > 0)) {
 743					showAvatar = true;
 744					loadAvatar(message, viewHolder.contact_picture, activity.getPixel(32));
 745				} else {
 746					showAvatar = false;
 747				}
 748				if (showAvatar) {
 749					viewHolder.contact_picture.setAlpha(0.5f);
 750					viewHolder.contact_picture.setVisibility(View.VISIBLE);
 751				} else {
 752					viewHolder.contact_picture.setVisibility(View.GONE);
 753				}
 754			}
 755			return view;
 756		} else {
 757			loadAvatar(message, viewHolder.contact_picture, activity.getPixel(48));
 758		}
 759
 760		viewHolder.contact_picture.setOnClickListener(v -> {
 761			if (MessageAdapter.this.mOnContactPictureClickedListener != null) {
 762				MessageAdapter.this.mOnContactPictureClickedListener
 763						.onContactPictureClicked(message);
 764			}
 765
 766		});
 767		viewHolder.contact_picture.setOnLongClickListener(v -> {
 768			if (MessageAdapter.this.mOnContactPictureLongClickedListener != null) {
 769				MessageAdapter.this.mOnContactPictureLongClickedListener
 770						.onContactPictureLongClicked(message);
 771				return true;
 772			} else {
 773				return false;
 774			}
 775		});
 776
 777		final Transferable transferable = message.getTransferable();
 778		if (transferable != null && transferable.getStatus() != Transferable.STATUS_UPLOADING) {
 779			if (transferable.getStatus() == Transferable.STATUS_OFFER) {
 780				displayDownloadableMessage(viewHolder, message, activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, message)));
 781			} else if (transferable.getStatus() == Transferable.STATUS_OFFER_CHECK_FILESIZE) {
 782				displayDownloadableMessage(viewHolder, message, activity.getString(R.string.check_x_filesize, UIHelper.getFileDescriptionString(activity, message)));
 783			} else {
 784				displayInfoMessage(viewHolder, UIHelper.getMessagePreview(activity, message).first, darkBackground);
 785			}
 786		} else if (message.getType() == Message.TYPE_IMAGE && message.getEncryption() != Message.ENCRYPTION_PGP && message.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED) {
 787			displayImageMessage(viewHolder, message);
 788		} else if (message.getType() == Message.TYPE_FILE && message.getEncryption() != Message.ENCRYPTION_PGP && message.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED) {
 789			if (message.getFileParams().width > 0 && message.getFileParams().height > 0) {
 790				displayImageMessage(viewHolder, message);
 791			} else if (message.getFileParams().runtime > 0) {
 792				displayAudioMessage(viewHolder, message, darkBackground);
 793			} else {
 794				displayOpenableMessage(viewHolder, message);
 795			}
 796		} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 797			if (account.isPgpDecryptionServiceConnected()) {
 798				if (!account.hasPendingPgpIntent(conversation)) {
 799					displayInfoMessage(viewHolder, activity.getString(R.string.message_decrypting), darkBackground);
 800				} else {
 801					displayInfoMessage(viewHolder, activity.getString(R.string.pgp_message), darkBackground);
 802				}
 803			} else {
 804				displayInfoMessage(viewHolder, activity.getString(R.string.install_openkeychain), darkBackground);
 805				viewHolder.message_box.setOnClickListener(new OnClickListener() {
 806
 807					@Override
 808					public void onClick(View v) {
 809						activity.showInstallPgpDialog();
 810					}
 811				});
 812			}
 813		} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
 814			displayDecryptionFailed(viewHolder, darkBackground);
 815		} else {
 816			if (message.isGeoUri()) {
 817				displayLocationMessage(viewHolder, message);
 818			} else if (message.bodyIsOnlyEmojis() && message.getType() != Message.TYPE_PRIVATE) {
 819				displayEmojiMessage(viewHolder, message.getBody().trim());
 820			} else if (message.treatAsDownloadable()) {
 821				try {
 822					URL url = new URL(message.getBody());
 823					displayDownloadableMessage(viewHolder,
 824							message,
 825							activity.getString(R.string.check_x_filesize_on_host,
 826									UIHelper.getFileDescriptionString(activity, message),
 827									url.getHost()));
 828				} catch (Exception e) {
 829					displayDownloadableMessage(viewHolder,
 830							message,
 831							activity.getString(R.string.check_x_filesize,
 832									UIHelper.getFileDescriptionString(activity, message)));
 833				}
 834			} else {
 835				displayTextMessage(viewHolder, message, darkBackground, type);
 836			}
 837		}
 838
 839		if (type == RECEIVED) {
 840			if (isInValidSession) {
 841				int bubble;
 842				if (!mUseGreenBackground) {
 843					bubble = activity.getThemeResource(R.attr.message_bubble_received_monochrome, R.drawable.message_bubble_received_white);
 844				} else {
 845					bubble = activity.getThemeResource(R.attr.message_bubble_received_green, R.drawable.message_bubble_received);
 846				}
 847				viewHolder.message_box.setBackgroundResource(bubble);
 848				viewHolder.encryption.setVisibility(View.GONE);
 849			} else {
 850				viewHolder.message_box.setBackgroundResource(R.drawable.message_bubble_received_warning);
 851				viewHolder.encryption.setVisibility(View.VISIBLE);
 852				if (omemoEncryption && !message.isTrusted()) {
 853					viewHolder.encryption.setText(R.string.not_trusted);
 854				} else {
 855					viewHolder.encryption.setText(CryptoHelper.encryptionTypeToText(message.getEncryption()));
 856				}
 857			}
 858		}
 859
 860		displayStatus(viewHolder, message, type, darkBackground);
 861
 862		return view;
 863	}
 864
 865	@Override
 866	public void notifyDataSetChanged() {
 867		listSelectionManager.onBeforeNotifyDataSetChanged();
 868		super.notifyDataSetChanged();
 869		listSelectionManager.onAfterNotifyDataSetChanged();
 870	}
 871
 872	private String transformText(CharSequence text, int start, int end, boolean forCopy) {
 873		SpannableStringBuilder builder = new SpannableStringBuilder(text);
 874		Object copySpan = new Object();
 875		builder.setSpan(copySpan, start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 876		DividerSpan[] dividerSpans = builder.getSpans(0, builder.length(), DividerSpan.class);
 877		for (DividerSpan dividerSpan : dividerSpans) {
 878			builder.replace(builder.getSpanStart(dividerSpan), builder.getSpanEnd(dividerSpan),
 879					dividerSpan.isLarge() ? "\n\n" : "\n");
 880		}
 881		start = builder.getSpanStart(copySpan);
 882		end = builder.getSpanEnd(copySpan);
 883		if (start == -1 || end == -1) return "";
 884		builder = new SpannableStringBuilder(builder, start, end);
 885		if (forCopy) {
 886			QuoteSpan[] quoteSpans = builder.getSpans(0, builder.length(), QuoteSpan.class);
 887			for (QuoteSpan quoteSpan : quoteSpans) {
 888				builder.insert(builder.getSpanStart(quoteSpan), "> ");
 889			}
 890		}
 891		return builder.toString();
 892	}
 893
 894	@Override
 895	public String transformTextForCopy(CharSequence text, int start, int end) {
 896		if (text instanceof Spanned) {
 897			return transformText(text, start, end, true);
 898		} else {
 899			return text.toString().substring(start, end);
 900		}
 901	}
 902
 903	public FileBackend getFileBackend() {
 904		return activity.xmppConnectionService.getFileBackend();
 905	}
 906
 907	public void stopAudioPlayer() {
 908		audioPlayer.stop();
 909	}
 910
 911	public void startStopPending() {
 912		audioPlayer.startStopPending();
 913	}
 914
 915	public void openDownloadable(Message message) {
 916		if (ContextCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
 917			ConversationFragment.registerPendingMessage(activity, message);
 918			ActivityCompat.requestPermissions(activity, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, ConversationActivity.REQUEST_OPEN_MESSAGE);
 919			return;
 920		}
 921		DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
 922		if (!file.exists()) {
 923			Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
 924			return;
 925		}
 926		Intent openIntent = new Intent(Intent.ACTION_VIEW);
 927		String mime = file.getMimeType();
 928		if (mime == null) {
 929			mime = "*/*";
 930		}
 931		Uri uri;
 932		try {
 933			uri = FileBackend.getUriForFile(activity, file);
 934		} catch (SecurityException e) {
 935			Log.d(Config.LOGTAG, "No permission to access " + file.getAbsolutePath(), e);
 936			Toast.makeText(activity, activity.getString(R.string.no_permission_to_access_x, file.getAbsolutePath()), Toast.LENGTH_SHORT).show();
 937			return;
 938		}
 939		openIntent.setDataAndType(uri, mime);
 940		openIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
 941		PackageManager manager = activity.getPackageManager();
 942		List<ResolveInfo> info = manager.queryIntentActivities(openIntent, 0);
 943		if (info.size() == 0) {
 944			openIntent.setDataAndType(uri, "*/*");
 945		}
 946		try {
 947			getContext().startActivity(openIntent);
 948		} catch (ActivityNotFoundException e) {
 949			Toast.makeText(activity, R.string.no_application_found_to_open_file, Toast.LENGTH_SHORT).show();
 950		}
 951	}
 952
 953	public void showLocation(Message message) {
 954		for (Intent intent : GeoHelper.createGeoIntentsFromMessage(message)) {
 955			if (intent.resolveActivity(getContext().getPackageManager()) != null) {
 956				getContext().startActivity(intent);
 957				return;
 958			}
 959		}
 960		Toast.makeText(activity, R.string.no_application_found_to_display_location, Toast.LENGTH_SHORT).show();
 961	}
 962
 963	public void updatePreferences() {
 964		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
 965		this.mIndicateReceived = p.getBoolean("indicate_received", activity.getResources().getBoolean(R.bool.indicate_received));
 966		this.mUseGreenBackground = p.getBoolean("use_green_background", activity.getResources().getBoolean(R.bool.use_green_background));
 967	}
 968
 969	public void loadAvatar(Message message, ImageView imageView, int size) {
 970		if (cancelPotentialWork(message, imageView)) {
 971			final Bitmap bm = activity.avatarService().get(message, size, true);
 972			if (bm != null) {
 973				cancelPotentialWork(message, imageView);
 974				imageView.setImageBitmap(bm);
 975				imageView.setBackgroundColor(Color.TRANSPARENT);
 976			} else {
 977				@ColorInt int bg;
 978				if (message.getType() == Message.TYPE_STATUS && message.getCounterparts() != null && message.getCounterparts().size() > 1) {
 979					bg = Color.TRANSPARENT;
 980				} else {
 981					bg = UIHelper.getColorForName(UIHelper.getMessageDisplayName(message));
 982				}
 983				imageView.setBackgroundColor(bg);
 984				imageView.setImageDrawable(null);
 985				final BitmapWorkerTask task = new BitmapWorkerTask(imageView, size);
 986				final AsyncDrawable asyncDrawable = new AsyncDrawable(activity.getResources(), null, task);
 987				imageView.setImageDrawable(asyncDrawable);
 988				try {
 989					task.execute(message);
 990				} catch (final RejectedExecutionException ignored) {
 991				}
 992			}
 993		}
 994	}
 995
 996	public interface OnQuoteListener {
 997		void onQuote(String text);
 998	}
 999
1000	public interface OnContactPictureClicked {
1001		void onContactPictureClicked(Message message);
1002	}
1003
1004	public interface OnContactPictureLongClicked {
1005		void onContactPictureLongClicked(Message message);
1006	}
1007
1008	private static class ViewHolder {
1009
1010		public Button load_more_messages;
1011		public ImageView edit_indicator;
1012		public RelativeLayout audioPlayer;
1013		protected LinearLayout message_box;
1014		protected Button download_button;
1015		protected ImageView image;
1016		protected ImageView indicator;
1017		protected ImageView indicatorReceived;
1018		protected TextView time;
1019		protected CopyTextView messageBody;
1020		protected ImageView contact_picture;
1021		protected TextView status_message;
1022		protected TextView encryption;
1023	}
1024
1025	static class AsyncDrawable extends BitmapDrawable {
1026		private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
1027
1028		public AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
1029			super(res, bitmap);
1030			bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
1031		}
1032
1033		public BitmapWorkerTask getBitmapWorkerTask() {
1034			return bitmapWorkerTaskReference.get();
1035		}
1036	}
1037
1038	private class MessageBodyActionModeCallback implements ActionMode.Callback {
1039
1040		private final TextView textView;
1041
1042		public MessageBodyActionModeCallback(TextView textView) {
1043			this.textView = textView;
1044		}
1045
1046		@Override
1047		public boolean onCreateActionMode(ActionMode mode, Menu menu) {
1048			if (onQuoteListener != null) {
1049				int quoteResId = activity.getThemeResource(R.attr.icon_quote, R.drawable.ic_action_reply);
1050				// 3rd item is placed after "copy" item
1051				menu.add(0, android.R.id.button1, 3, R.string.quote).setIcon(quoteResId)
1052						.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
1053			}
1054			return false;
1055		}
1056
1057		@Override
1058		public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
1059			return false;
1060		}
1061
1062		@Override
1063		public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
1064			if (item.getItemId() == android.R.id.button1) {
1065				int start = textView.getSelectionStart();
1066				int end = textView.getSelectionEnd();
1067				if (end > start) {
1068					String text = transformText(textView.getText(), start, end, false);
1069					if (onQuoteListener != null) {
1070						onQuoteListener.onQuote(text);
1071					}
1072					mode.finish();
1073				}
1074				return true;
1075			}
1076			return false;
1077		}
1078
1079		@Override
1080		public void onDestroyActionMode(ActionMode mode) {
1081		}
1082	}
1083
1084	class BitmapWorkerTask extends AsyncTask<Message, Void, Bitmap> {
1085		private final WeakReference<ImageView> imageViewReference;
1086		private final int size;
1087		private Message message = null;
1088
1089		public BitmapWorkerTask(ImageView imageView, int size) {
1090			imageViewReference = new WeakReference<>(imageView);
1091			this.size = size;
1092		}
1093
1094		@Override
1095		protected Bitmap doInBackground(Message... params) {
1096			this.message = params[0];
1097			return activity.avatarService().get(this.message, size, isCancelled());
1098		}
1099
1100		@Override
1101		protected void onPostExecute(Bitmap bitmap) {
1102			if (bitmap != null && !isCancelled()) {
1103				final ImageView imageView = imageViewReference.get();
1104				if (imageView != null) {
1105					imageView.setImageBitmap(bitmap);
1106					imageView.setBackgroundColor(0x00000000);
1107				}
1108			}
1109		}
1110	}
1111}