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.widget.ClickableMovementMethod;
  75import eu.siacs.conversations.ui.widget.CopyTextView;
  76import eu.siacs.conversations.ui.widget.ListSelectionManager;
  77import eu.siacs.conversations.utils.CryptoHelper;
  78import eu.siacs.conversations.utils.EmojiWrapper;
  79import eu.siacs.conversations.utils.Emoticons;
  80import eu.siacs.conversations.utils.GeoHelper;
  81import eu.siacs.conversations.utils.StylingHelper;
  82import eu.siacs.conversations.utils.UIHelper;
  83import eu.siacs.conversations.xmpp.mam.MamReference;
  84
  85public class MessageAdapter extends ArrayAdapter<Message> implements CopyTextView.CopyHandler {
  86
  87	public static final String DATE_SEPARATOR_BODY = "DATE_SEPARATOR";
  88	private static final int SENT = 0;
  89	private static final int RECEIVED = 1;
  90	private static final int STATUS = 2;
  91	private static final int DATE_SEPARATOR = 3;
  92	private final XmppActivity activity;
  93	private final ListSelectionManager listSelectionManager = new ListSelectionManager();
  94	private final AudioPlayer audioPlayer;
  95	private List<String> highlightedTerm = null;
  96	private DisplayMetrics metrics;
  97	private OnContactPictureClicked mOnContactPictureClickedListener;
  98	private OnContactPictureLongClicked mOnContactPictureLongClickedListener;
  99	private boolean mIndicateReceived = false;
 100	private boolean mUseGreenBackground = false;
 101	private OnQuoteListener onQuoteListener;
 102	public MessageAdapter(XmppActivity activity, List<Message> messages) {
 103		super(activity, 0, messages);
 104		this.audioPlayer = new AudioPlayer(this);
 105		this.activity = activity;
 106		metrics = getContext().getResources().getDisplayMetrics();
 107		updatePreferences();
 108	}
 109
 110
 111	public static boolean cancelPotentialWork(Message message, ImageView imageView) {
 112		final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
 113
 114		if (bitmapWorkerTask != null) {
 115			final Message oldMessage = bitmapWorkerTask.message;
 116			if (oldMessage == null || message != oldMessage) {
 117				bitmapWorkerTask.cancel(true);
 118			} else {
 119				return false;
 120			}
 121		}
 122		return true;
 123	}
 124
 125	private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
 126		if (imageView != null) {
 127			final Drawable drawable = imageView.getDrawable();
 128			if (drawable instanceof AsyncDrawable) {
 129				final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
 130				return asyncDrawable.getBitmapWorkerTask();
 131			}
 132		}
 133		return null;
 134	}
 135
 136	private static void resetClickListener(View... views) {
 137		for (View view : views) {
 138			view.setOnClickListener(null);
 139		}
 140	}
 141
 142	public void flagScreenOn() {
 143		activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
 144	}
 145
 146	public void flagScreenOff() {
 147		activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
 148	}
 149
 150	public void setOnContactPictureClicked(OnContactPictureClicked listener) {
 151		this.mOnContactPictureClickedListener = listener;
 152	}
 153
 154	public Activity getActivity() {
 155		return activity;
 156	}
 157
 158	public void setOnContactPictureLongClicked(
 159			OnContactPictureLongClicked listener) {
 160		this.mOnContactPictureLongClickedListener = listener;
 161	}
 162
 163	public void setOnQuoteListener(OnQuoteListener listener) {
 164		this.onQuoteListener = listener;
 165	}
 166
 167	@Override
 168	public int getViewTypeCount() {
 169		return 4;
 170	}
 171
 172	private int getItemViewType(Message message) {
 173		if (message.getType() == Message.TYPE_STATUS) {
 174			if (DATE_SEPARATOR_BODY.equals(message.getBody())) {
 175				return DATE_SEPARATOR;
 176			} else {
 177				return STATUS;
 178			}
 179		} else if (message.getStatus() <= Message.STATUS_RECEIVED) {
 180			return RECEIVED;
 181		}
 182
 183		return SENT;
 184	}
 185
 186	@Override
 187	public int getItemViewType(int position) {
 188		return this.getItemViewType(getItem(position));
 189	}
 190
 191	private int getMessageTextColor(boolean onDark, boolean primary) {
 192		if (onDark) {
 193			return ContextCompat.getColor(activity, primary ? R.color.white : R.color.white70);
 194		} else {
 195			return ContextCompat.getColor(activity, primary ? R.color.black87 : R.color.black54);
 196		}
 197	}
 198
 199	private void displayStatus(ViewHolder viewHolder, Message message, int type, boolean darkBackground) {
 200		String filesize = null;
 201		String info = null;
 202		boolean error = false;
 203		if (viewHolder.indicatorReceived != null) {
 204			viewHolder.indicatorReceived.setVisibility(View.GONE);
 205		}
 206
 207		if (viewHolder.edit_indicator != null) {
 208			if (message.edited()) {
 209				viewHolder.edit_indicator.setVisibility(View.VISIBLE);
 210				viewHolder.edit_indicator.setImageResource(darkBackground ? R.drawable.ic_mode_edit_white_18dp : R.drawable.ic_mode_edit_black_18dp);
 211				viewHolder.edit_indicator.setAlpha(darkBackground ? 0.7f : 0.57f);
 212			} else {
 213				viewHolder.edit_indicator.setVisibility(View.GONE);
 214			}
 215		}
 216		boolean multiReceived = message.getConversation().getMode() == Conversation.MODE_MULTI
 217				&& message.getMergedStatus() <= Message.STATUS_RECEIVED;
 218		if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE || message.getTransferable() != null) {
 219			FileParams params = message.getFileParams();
 220			if (params.size > (1.5 * 1024 * 1024)) {
 221				filesize = Math.round(params.size * 1f / (1024 * 1024)) + " MiB";
 222			} else if (params.size >= 1024) {
 223				filesize = Math.round(params.size * 1f / 1024) + " KiB";
 224			} else if (params.size > 0) {
 225				filesize = params.size + " B";
 226			}
 227			if (message.getTransferable() != null && message.getTransferable().getStatus() == Transferable.STATUS_FAILED) {
 228				error = true;
 229			}
 230		}
 231		switch (message.getMergedStatus()) {
 232			case Message.STATUS_WAITING:
 233				info = getContext().getString(R.string.waiting);
 234				break;
 235			case Message.STATUS_UNSEND:
 236				Transferable d = message.getTransferable();
 237				if (d != null) {
 238					info = getContext().getString(R.string.sending_file, d.getProgress());
 239				} else {
 240					info = getContext().getString(R.string.sending);
 241				}
 242				break;
 243			case Message.STATUS_OFFERED:
 244				info = getContext().getString(R.string.offering);
 245				break;
 246			case Message.STATUS_SEND_RECEIVED:
 247				if (mIndicateReceived) {
 248					viewHolder.indicatorReceived.setVisibility(View.VISIBLE);
 249				}
 250				break;
 251			case Message.STATUS_SEND_DISPLAYED:
 252				if (mIndicateReceived) {
 253					viewHolder.indicatorReceived.setVisibility(View.VISIBLE);
 254				}
 255				break;
 256			case Message.STATUS_SEND_FAILED:
 257				info = getContext().getString(R.string.send_failed);
 258				error = true;
 259				break;
 260			default:
 261				if (multiReceived) {
 262					info = UIHelper.getMessageDisplayName(message);
 263				}
 264				break;
 265		}
 266		if (error && type == SENT) {
 267			viewHolder.time.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Caption_Warning);
 268		} else {
 269			if (darkBackground) {
 270				viewHolder.time.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Caption_OnDark);
 271			} else {
 272				viewHolder.time.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Caption);
 273			}
 274			viewHolder.time.setTextColor(this.getMessageTextColor(darkBackground, false));
 275		}
 276		if (message.getEncryption() == Message.ENCRYPTION_NONE) {
 277			viewHolder.indicator.setVisibility(View.GONE);
 278		} else {
 279			boolean verified = false;
 280			if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
 281				final FingerprintStatus status = message.getConversation()
 282						.getAccount().getAxolotlService().getFingerprintTrust(
 283								message.getFingerprint());
 284				if (status != null && status.isVerified()) {
 285					verified = true;
 286				}
 287			}
 288			if (verified) {
 289				viewHolder.indicator.setImageResource(darkBackground ? R.drawable.ic_verified_user_white_18dp : R.drawable.ic_verified_user_black_18dp);
 290			} else {
 291				viewHolder.indicator.setImageResource(darkBackground ? R.drawable.ic_lock_white_18dp : R.drawable.ic_lock_black_18dp);
 292			}
 293			if (darkBackground) {
 294				viewHolder.indicator.setAlpha(0.7f);
 295			} else {
 296				viewHolder.indicator.setAlpha(0.57f);
 297			}
 298			viewHolder.indicator.setVisibility(View.VISIBLE);
 299		}
 300
 301		String formatedTime = UIHelper.readableTimeDifferenceFull(getContext(), message.getMergedTimeSent());
 302		if (message.getStatus() <= Message.STATUS_RECEIVED) {
 303			if ((filesize != null) && (info != null)) {
 304				viewHolder.time.setText(formatedTime + " \u00B7 " + filesize + " \u00B7 " + info);
 305			} else if ((filesize == null) && (info != null)) {
 306				viewHolder.time.setText(formatedTime + " \u00B7 " + info);
 307			} else if ((filesize != null) && (info == null)) {
 308				viewHolder.time.setText(formatedTime + " \u00B7 " + filesize);
 309			} else {
 310				viewHolder.time.setText(formatedTime);
 311			}
 312		} else {
 313			if ((filesize != null) && (info != null)) {
 314				viewHolder.time.setText(filesize + " \u00B7 " + info);
 315			} else if ((filesize == null) && (info != null)) {
 316				if (error) {
 317					viewHolder.time.setText(info + " \u00B7 " + formatedTime);
 318				} else {
 319					viewHolder.time.setText(info);
 320				}
 321			} else if ((filesize != null) && (info == null)) {
 322				viewHolder.time.setText(filesize + " \u00B7 " + formatedTime);
 323			} else {
 324				viewHolder.time.setText(formatedTime);
 325			}
 326		}
 327	}
 328
 329	private void displayInfoMessage(ViewHolder viewHolder, CharSequence text, boolean darkBackground) {
 330		viewHolder.download_button.setVisibility(View.GONE);
 331		viewHolder.audioPlayer.setVisibility(View.GONE);
 332		viewHolder.image.setVisibility(View.GONE);
 333		viewHolder.messageBody.setVisibility(View.VISIBLE);
 334		viewHolder.messageBody.setText(text);
 335		if (darkBackground) {
 336			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Secondary_OnDark);
 337		} else {
 338			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Secondary);
 339		}
 340		viewHolder.messageBody.setTextIsSelectable(false);
 341	}
 342
 343	private void displayEmojiMessage(final ViewHolder viewHolder, final String body, final boolean darkBackground) {
 344		viewHolder.download_button.setVisibility(View.GONE);
 345		viewHolder.audioPlayer.setVisibility(View.GONE);
 346		viewHolder.image.setVisibility(View.GONE);
 347		viewHolder.messageBody.setVisibility(View.VISIBLE);
 348		if (darkBackground) {
 349			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Emoji_OnDark);
 350		} else {
 351			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_Emoji);
 352		}
 353		Spannable span = new SpannableString(body);
 354		float size = Emoticons.isEmoji(body) ? 3.0f : 2.0f;
 355		span.setSpan(new RelativeSizeSpan(size), 0, body.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 356		viewHolder.messageBody.setText(EmojiWrapper.transform(span));
 357	}
 358
 359	private void applyQuoteSpan(SpannableStringBuilder body, int start, int end, boolean darkBackground) {
 360		if (start > 1 && !"\n\n".equals(body.subSequence(start - 2, start).toString())) {
 361			body.insert(start++, "\n");
 362			body.setSpan(new DividerSpan(false), start - 2, start, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 363			end++;
 364		}
 365		if (end < body.length() - 1 && !"\n\n".equals(body.subSequence(end, end + 2).toString())) {
 366			body.insert(end, "\n");
 367			body.setSpan(new DividerSpan(false), end, end + 2, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 368		}
 369		int color = darkBackground ? this.getMessageTextColor(darkBackground, false)
 370				: ContextCompat.getColor(activity, R.color.green700_desaturated);
 371		DisplayMetrics metrics = getContext().getResources().getDisplayMetrics();
 372		body.setSpan(new QuoteSpan(color, metrics), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 373	}
 374
 375	/**
 376	 * Applies QuoteSpan to group of lines which starts with > or » characters.
 377	 * Appends likebreaks and applies DividerSpan to them to show a padding between quote and text.
 378	 */
 379	private boolean handleTextQuotes(SpannableStringBuilder body, boolean darkBackground) {
 380		boolean startsWithQuote = false;
 381		char previous = '\n';
 382		int lineStart = -1;
 383		int lineTextStart = -1;
 384		int quoteStart = -1;
 385		for (int i = 0; i <= body.length(); i++) {
 386			char current = body.length() > i ? body.charAt(i) : '\n';
 387			if (lineStart == -1) {
 388				if (previous == '\n') {
 389					if ((current == '>' && UIHelper.isPositionFollowedByQuoteableCharacter(body, i))
 390							|| current == '\u00bb' && !UIHelper.isPositionFollowedByQuote(body, i)) {
 391						// Line start with quote
 392						lineStart = i;
 393						if (quoteStart == -1) quoteStart = i;
 394						if (i == 0) startsWithQuote = true;
 395					} else if (quoteStart >= 0) {
 396						// Line start without quote, apply spans there
 397						applyQuoteSpan(body, quoteStart, i - 1, darkBackground);
 398						quoteStart = -1;
 399					}
 400				}
 401			} else {
 402				// Remove extra spaces between > and first character in the line
 403				// > character will be removed too
 404				if (current != ' ' && lineTextStart == -1) {
 405					lineTextStart = i;
 406				}
 407				if (current == '\n') {
 408					body.delete(lineStart, lineTextStart);
 409					i -= lineTextStart - lineStart;
 410					if (i == lineStart) {
 411						// Avoid empty lines because span over empty line can be hidden
 412						body.insert(i++, " ");
 413					}
 414					lineStart = -1;
 415					lineTextStart = -1;
 416				}
 417			}
 418			previous = current;
 419		}
 420		if (quoteStart >= 0) {
 421			// Apply spans to finishing open quote
 422			applyQuoteSpan(body, quoteStart, body.length(), darkBackground);
 423		}
 424		return startsWithQuote;
 425	}
 426
 427	private void displayTextMessage(final ViewHolder viewHolder, final Message message, boolean darkBackground, int type) {
 428		viewHolder.download_button.setVisibility(View.GONE);
 429		viewHolder.image.setVisibility(View.GONE);
 430		viewHolder.audioPlayer.setVisibility(View.GONE);
 431		viewHolder.messageBody.setVisibility(View.VISIBLE);
 432
 433		if (darkBackground) {
 434			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1_OnDark);
 435		} else {
 436			viewHolder.messageBody.setTextAppearance(getContext(), R.style.TextAppearance_Conversations_Body1);
 437		}
 438		viewHolder.messageBody.setHighlightColor(ContextCompat.getColor(activity, darkBackground
 439				? (type == SENT || !mUseGreenBackground ? R.color.black26 : R.color.grey800) : R.color.grey500));
 440		viewHolder.messageBody.setTypeface(null, Typeface.NORMAL);
 441
 442		if (message.getBody() != null) {
 443			final String nick = UIHelper.getMessageDisplayName(message);
 444			SpannableStringBuilder body = message.getMergedBody();
 445			boolean hasMeCommand = message.hasMeCommand();
 446			if (hasMeCommand) {
 447				body = body.replace(0, Message.ME_COMMAND.length(), nick + " ");
 448			}
 449			if (body.length() > Config.MAX_DISPLAY_MESSAGE_CHARS) {
 450				body = new SpannableStringBuilder(body, 0, Config.MAX_DISPLAY_MESSAGE_CHARS);
 451				body.append("\u2026");
 452			}
 453			Message.MergeSeparator[] mergeSeparators = body.getSpans(0, body.length(), Message.MergeSeparator.class);
 454			for (Message.MergeSeparator mergeSeparator : mergeSeparators) {
 455				int start = body.getSpanStart(mergeSeparator);
 456				int end = body.getSpanEnd(mergeSeparator);
 457				body.setSpan(new DividerSpan(true), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 458			}
 459			boolean startsWithQuote = handleTextQuotes(body, darkBackground);
 460			if (message.getType() != Message.TYPE_PRIVATE) {
 461				if (hasMeCommand) {
 462					body.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), 0, nick.length(),
 463							Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 464				}
 465			} else {
 466				String privateMarker;
 467				if (message.getStatus() <= Message.STATUS_RECEIVED) {
 468					privateMarker = activity.getString(R.string.private_message);
 469				} else {
 470					final String to;
 471					if (message.getCounterpart() != null) {
 472						to = message.getCounterpart().getResource();
 473					} else {
 474						to = "";
 475					}
 476					privateMarker = activity.getString(R.string.private_message_to, to);
 477				}
 478				body.insert(0, privateMarker);
 479				int privateMarkerIndex = privateMarker.length();
 480				if (startsWithQuote) {
 481					body.insert(privateMarkerIndex, "\n\n");
 482					body.setSpan(new DividerSpan(false), privateMarkerIndex, privateMarkerIndex + 2,
 483							Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 484				} else {
 485					body.insert(privateMarkerIndex, " ");
 486				}
 487				body.setSpan(new ForegroundColorSpan(getMessageTextColor(darkBackground, false)), 0, privateMarkerIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 488				body.setSpan(new StyleSpan(Typeface.BOLD), 0, privateMarkerIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 489				if (hasMeCommand) {
 490					body.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), privateMarkerIndex + 1,
 491							privateMarkerIndex + 1 + nick.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 492				}
 493			}
 494			if (message.getConversation().getMode() == Conversation.MODE_MULTI && message.getStatus() == Message.STATUS_RECEIVED) {
 495				if (message.getConversation() instanceof Conversation) {
 496					final Conversation conversation = (Conversation) message.getConversation();
 497					Pattern pattern = NotificationService.generateNickHighlightPattern(conversation.getMucOptions().getActualNick());
 498					Matcher matcher = pattern.matcher(body);
 499					while (matcher.find()) {
 500						body.setSpan(new StyleSpan(Typeface.BOLD), matcher.start(), matcher.end(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 501					}
 502				}
 503			}
 504			Matcher matcher = Emoticons.getEmojiPattern(body).matcher(body);
 505			while (matcher.find()) {
 506				if (matcher.start() < matcher.end()) {
 507					body.setSpan(new RelativeSizeSpan(1.2f), matcher.start(), matcher.end(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 508				}
 509			}
 510
 511			StylingHelper.format(body, viewHolder.messageBody.getCurrentTextColor());
 512			if (highlightedTerm != null) {
 513				StylingHelper.highlight(activity, body, highlightedTerm, StylingHelper.isDarkText(viewHolder.messageBody));
 514			}
 515			MyLinkify.addLinks(body,true);
 516			viewHolder.messageBody.setAutoLinkMask(0);
 517			viewHolder.messageBody.setText(EmojiWrapper.transform(body));
 518			viewHolder.messageBody.setTextIsSelectable(true);
 519			viewHolder.messageBody.setMovementMethod(ClickableMovementMethod.getInstance());
 520			listSelectionManager.onUpdate(viewHolder.messageBody, message);
 521		} else {
 522			viewHolder.messageBody.setText("");
 523			viewHolder.messageBody.setTextIsSelectable(false);
 524		}
 525	}
 526
 527	private void displayDownloadableMessage(ViewHolder viewHolder, final Message message, String text) {
 528		viewHolder.image.setVisibility(View.GONE);
 529		viewHolder.messageBody.setVisibility(View.GONE);
 530		viewHolder.audioPlayer.setVisibility(View.GONE);
 531		viewHolder.download_button.setVisibility(View.VISIBLE);
 532		viewHolder.download_button.setText(text);
 533		viewHolder.download_button.setOnClickListener(v -> ConversationFragment.downloadFile(activity, message));
 534	}
 535
 536	private void displayOpenableMessage(ViewHolder viewHolder, final Message message) {
 537		viewHolder.image.setVisibility(View.GONE);
 538		viewHolder.messageBody.setVisibility(View.GONE);
 539		viewHolder.audioPlayer.setVisibility(View.GONE);
 540		viewHolder.download_button.setVisibility(View.VISIBLE);
 541		viewHolder.download_button.setText(activity.getString(R.string.open_x_file, UIHelper.getFileDescriptionString(activity, message)));
 542		viewHolder.download_button.setOnClickListener(v -> openDownloadable(message));
 543	}
 544
 545	private void displayLocationMessage(ViewHolder viewHolder, final Message message) {
 546		viewHolder.image.setVisibility(View.GONE);
 547		viewHolder.messageBody.setVisibility(View.GONE);
 548		viewHolder.audioPlayer.setVisibility(View.GONE);
 549		viewHolder.download_button.setVisibility(View.VISIBLE);
 550		viewHolder.download_button.setText(R.string.show_location);
 551		viewHolder.download_button.setOnClickListener(v -> showLocation(message));
 552	}
 553
 554	private void displayAudioMessage(ViewHolder viewHolder, Message message, boolean darkBackground) {
 555		viewHolder.image.setVisibility(View.GONE);
 556		viewHolder.messageBody.setVisibility(View.GONE);
 557		viewHolder.download_button.setVisibility(View.GONE);
 558		final RelativeLayout audioPlayer = viewHolder.audioPlayer;
 559		audioPlayer.setVisibility(View.VISIBLE);
 560		AudioPlayer.ViewHolder.get(audioPlayer).setDarkBackground(darkBackground);
 561		this.audioPlayer.init(audioPlayer, message);
 562	}
 563
 564	private void displayImageMessage(ViewHolder viewHolder, final Message message) {
 565		viewHolder.download_button.setVisibility(View.GONE);
 566		viewHolder.messageBody.setVisibility(View.GONE);
 567		viewHolder.audioPlayer.setVisibility(View.GONE);
 568		viewHolder.image.setVisibility(View.VISIBLE);
 569		FileParams params = message.getFileParams();
 570		double target = metrics.density * 288;
 571		int scaledW;
 572		int scaledH;
 573		if (Math.max(params.height, params.width) * metrics.density <= target) {
 574			scaledW = (int) (params.width * metrics.density);
 575			scaledH = (int) (params.height * metrics.density);
 576		} else if (Math.max(params.height, params.width) <= target) {
 577			scaledW = params.width;
 578			scaledH = params.height;
 579		} else if (params.width <= params.height) {
 580			scaledW = (int) (params.width / ((double) params.height / target));
 581			scaledH = (int) target;
 582		} else {
 583			scaledW = (int) target;
 584			scaledH = (int) (params.height / ((double) params.width / target));
 585		}
 586		LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(scaledW, scaledH);
 587		layoutParams.setMargins(0, (int) (metrics.density * 4), 0, (int) (metrics.density * 4));
 588		viewHolder.image.setLayoutParams(layoutParams);
 589		activity.loadBitmap(message, viewHolder.image);
 590		viewHolder.image.setOnClickListener(v -> openDownloadable(message));
 591	}
 592
 593	private void loadMoreMessages(Conversation conversation) {
 594		conversation.setLastClearHistory(0, null);
 595		activity.xmppConnectionService.updateConversation(conversation);
 596		conversation.setHasMessagesLeftOnServer(true);
 597		conversation.setFirstMamReference(null);
 598		long timestamp = conversation.getLastMessageTransmitted().getTimestamp();
 599		if (timestamp == 0) {
 600			timestamp = System.currentTimeMillis();
 601		}
 602		conversation.messagesLoaded.set(true);
 603		MessageArchiveService.Query query = activity.xmppConnectionService.getMessageArchiveService().query(conversation, new MamReference(0), timestamp, false);
 604		if (query != null) {
 605			Toast.makeText(activity, R.string.fetching_history_from_server, Toast.LENGTH_LONG).show();
 606		} else {
 607			Toast.makeText(activity, R.string.not_fetching_history_retention_period, Toast.LENGTH_SHORT).show();
 608		}
 609	}
 610
 611	@Override
 612	public View getView(int position, View view, ViewGroup parent) {
 613		final Message message = getItem(position);
 614		final boolean omemoEncryption = message.getEncryption() == Message.ENCRYPTION_AXOLOTL;
 615		final boolean isInValidSession = message.isValidInSession() && (!omemoEncryption || message.isTrusted());
 616		final Conversational conversation = message.getConversation();
 617		final Account account = conversation.getAccount();
 618		final int type = getItemViewType(position);
 619		ViewHolder viewHolder;
 620		if (view == null) {
 621			viewHolder = new ViewHolder();
 622			switch (type) {
 623				case DATE_SEPARATOR:
 624					view = activity.getLayoutInflater().inflate(R.layout.message_date_bubble, parent, false);
 625					viewHolder.status_message = view.findViewById(R.id.message_body);
 626					viewHolder.message_box = view.findViewById(R.id.message_box);
 627					break;
 628				case SENT:
 629					view = activity.getLayoutInflater().inflate(R.layout.message_sent, parent, false);
 630					viewHolder.message_box = view.findViewById(R.id.message_box);
 631					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 632					viewHolder.download_button = view.findViewById(R.id.download_button);
 633					viewHolder.indicator = view.findViewById(R.id.security_indicator);
 634					viewHolder.edit_indicator = view.findViewById(R.id.edit_indicator);
 635					viewHolder.image = view.findViewById(R.id.message_image);
 636					viewHolder.messageBody = view.findViewById(R.id.message_body);
 637					viewHolder.time = view.findViewById(R.id.message_time);
 638					viewHolder.indicatorReceived = view.findViewById(R.id.indicator_received);
 639					viewHolder.audioPlayer = view.findViewById(R.id.audio_player);
 640					break;
 641				case RECEIVED:
 642					view = activity.getLayoutInflater().inflate(R.layout.message_received, parent, false);
 643					viewHolder.message_box = view.findViewById(R.id.message_box);
 644					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 645					viewHolder.download_button = view.findViewById(R.id.download_button);
 646					viewHolder.indicator = view.findViewById(R.id.security_indicator);
 647					viewHolder.edit_indicator = view.findViewById(R.id.edit_indicator);
 648					viewHolder.image = view.findViewById(R.id.message_image);
 649					viewHolder.messageBody = view.findViewById(R.id.message_body);
 650					viewHolder.time = view.findViewById(R.id.message_time);
 651					viewHolder.indicatorReceived = view.findViewById(R.id.indicator_received);
 652					viewHolder.encryption = view.findViewById(R.id.message_encryption);
 653					viewHolder.audioPlayer = view.findViewById(R.id.audio_player);
 654					break;
 655				case STATUS:
 656					view = activity.getLayoutInflater().inflate(R.layout.message_status, parent, false);
 657					viewHolder.contact_picture = view.findViewById(R.id.message_photo);
 658					viewHolder.status_message = view.findViewById(R.id.status_message);
 659					viewHolder.load_more_messages = view.findViewById(R.id.load_more_messages);
 660					break;
 661				default:
 662					throw new AssertionError("Unknown view type");
 663			}
 664			if (viewHolder.messageBody != null) {
 665				listSelectionManager.onCreate(viewHolder.messageBody,
 666						new MessageBodyActionModeCallback(viewHolder.messageBody));
 667				viewHolder.messageBody.setCopyHandler(this);
 668			}
 669			view.setTag(viewHolder);
 670		} else {
 671			viewHolder = (ViewHolder) view.getTag();
 672			if (viewHolder == null) {
 673				return view;
 674			}
 675		}
 676
 677		boolean darkBackground = type == RECEIVED && (!isInValidSession || mUseGreenBackground) || activity.isDarkTheme();
 678
 679		if (type == DATE_SEPARATOR) {
 680			if (UIHelper.today(message.getTimeSent())) {
 681				viewHolder.status_message.setText(R.string.today);
 682			} else if (UIHelper.yesterday(message.getTimeSent())) {
 683				viewHolder.status_message.setText(R.string.yesterday);
 684			} else {
 685				viewHolder.status_message.setText(DateUtils.formatDateTime(activity, message.getTimeSent(), DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_SHOW_YEAR));
 686			}
 687			viewHolder.message_box.setBackgroundResource(activity.isDarkTheme() ? R.drawable.date_bubble_grey : R.drawable.date_bubble_white);
 688			return view;
 689		} else if (type == STATUS) {
 690			if ("LOAD_MORE".equals(message.getBody())) {
 691				viewHolder.status_message.setVisibility(View.GONE);
 692				viewHolder.contact_picture.setVisibility(View.GONE);
 693				viewHolder.load_more_messages.setVisibility(View.VISIBLE);
 694				viewHolder.load_more_messages.setOnClickListener(v -> loadMoreMessages((Conversation) message.getConversation()));
 695			} else {
 696				viewHolder.status_message.setVisibility(View.VISIBLE);
 697				viewHolder.load_more_messages.setVisibility(View.GONE);
 698				viewHolder.status_message.setText(message.getBody());
 699				boolean showAvatar;
 700				if (conversation.getMode() == Conversation.MODE_SINGLE) {
 701					showAvatar = true;
 702					loadAvatar(message, viewHolder.contact_picture, activity.getPixel(32));
 703				} else if (message.getCounterpart() != null || message.getTrueCounterpart() != null || (message.getCounterparts() != null && message.getCounterparts().size() > 0)) {
 704					showAvatar = true;
 705					loadAvatar(message, viewHolder.contact_picture, activity.getPixel(32));
 706				} else {
 707					showAvatar = false;
 708				}
 709				if (showAvatar) {
 710					viewHolder.contact_picture.setAlpha(0.5f);
 711					viewHolder.contact_picture.setVisibility(View.VISIBLE);
 712				} else {
 713					viewHolder.contact_picture.setVisibility(View.GONE);
 714				}
 715			}
 716			return view;
 717		} else {
 718			loadAvatar(message, viewHolder.contact_picture, activity.getPixel(48));
 719		}
 720
 721		resetClickListener(viewHolder.message_box, viewHolder.messageBody);
 722
 723		viewHolder.contact_picture.setOnClickListener(v -> {
 724			if (MessageAdapter.this.mOnContactPictureClickedListener != null) {
 725				MessageAdapter.this.mOnContactPictureClickedListener
 726						.onContactPictureClicked(message);
 727			}
 728
 729		});
 730		viewHolder.contact_picture.setOnLongClickListener(v -> {
 731			if (MessageAdapter.this.mOnContactPictureLongClickedListener != null) {
 732				MessageAdapter.this.mOnContactPictureLongClickedListener
 733						.onContactPictureLongClicked(message);
 734				return true;
 735			} else {
 736				return false;
 737			}
 738		});
 739
 740		final Transferable transferable = message.getTransferable();
 741		if (transferable != null && transferable.getStatus() != Transferable.STATUS_UPLOADING) {
 742			if (transferable.getStatus() == Transferable.STATUS_OFFER) {
 743				displayDownloadableMessage(viewHolder, message, activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, message)));
 744			} else if (transferable.getStatus() == Transferable.STATUS_OFFER_CHECK_FILESIZE) {
 745				displayDownloadableMessage(viewHolder, message, activity.getString(R.string.check_x_filesize, UIHelper.getFileDescriptionString(activity, message)));
 746			} else {
 747				displayInfoMessage(viewHolder, UIHelper.getMessagePreview(activity, message).first, darkBackground);
 748			}
 749		} else if (message.isFileOrImage() && message.getEncryption() != Message.ENCRYPTION_PGP && message.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED) {
 750			if (message.getFileParams().width > 0 && message.getFileParams().height > 0) {
 751				displayImageMessage(viewHolder, message);
 752			} else if (message.getFileParams().runtime > 0) {
 753				displayAudioMessage(viewHolder, message, darkBackground);
 754			} else {
 755				displayOpenableMessage(viewHolder, message);
 756			}
 757		} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 758			if (account.isPgpDecryptionServiceConnected()) {
 759				if (conversation instanceof Conversation && !account.hasPendingPgpIntent((Conversation) conversation)) {
 760					displayInfoMessage(viewHolder, activity.getString(R.string.message_decrypting), darkBackground);
 761				} else {
 762					displayInfoMessage(viewHolder, activity.getString(R.string.pgp_message), darkBackground);
 763				}
 764			} else {
 765				displayInfoMessage(viewHolder, activity.getString(R.string.install_openkeychain), darkBackground);
 766				viewHolder.message_box.setOnClickListener(this::promptOpenKeychainInstall);
 767				viewHolder.messageBody.setOnClickListener(this::promptOpenKeychainInstall);
 768			}
 769		} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
 770			displayInfoMessage(viewHolder, activity.getString(R.string.decryption_failed), darkBackground);
 771		} else if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE) {
 772			displayInfoMessage(viewHolder, activity.getString(R.string.not_encrypted_for_this_device), darkBackground);
 773		} else {
 774			if (message.isGeoUri()) {
 775				displayLocationMessage(viewHolder, message);
 776			} else if (message.bodyIsOnlyEmojis() && message.getType() != Message.TYPE_PRIVATE) {
 777				displayEmojiMessage(viewHolder, message.getBody().trim(), darkBackground);
 778			} else if (message.treatAsDownloadable()) {
 779				try {
 780					URL url = new URL(message.getBody());
 781					if (P1S3UrlStreamHandler.PROTOCOL_NAME.equalsIgnoreCase(url.getProtocol())) {
 782						displayDownloadableMessage(viewHolder,
 783								message,
 784								activity.getString(R.string.check_x_filesize,
 785										UIHelper.getFileDescriptionString(activity, message)));
 786					} else {
 787						displayDownloadableMessage(viewHolder,
 788								message,
 789								activity.getString(R.string.check_x_filesize_on_host,
 790										UIHelper.getFileDescriptionString(activity, message),
 791										url.getHost()));
 792					}
 793				} catch (Exception e) {
 794					displayDownloadableMessage(viewHolder,
 795							message,
 796							activity.getString(R.string.check_x_filesize,
 797									UIHelper.getFileDescriptionString(activity, message)));
 798				}
 799			} else {
 800				displayTextMessage(viewHolder, message, darkBackground, type);
 801			}
 802		}
 803
 804		if (type == RECEIVED) {
 805			if (isInValidSession) {
 806				int bubble;
 807				if (!mUseGreenBackground) {
 808					bubble = activity.getThemeResource(R.attr.message_bubble_received_monochrome, R.drawable.message_bubble_received_white);
 809				} else {
 810					bubble = activity.getThemeResource(R.attr.message_bubble_received_green, R.drawable.message_bubble_received);
 811				}
 812				viewHolder.message_box.setBackgroundResource(bubble);
 813				viewHolder.encryption.setVisibility(View.GONE);
 814			} else {
 815				viewHolder.message_box.setBackgroundResource(R.drawable.message_bubble_received_warning);
 816				viewHolder.encryption.setVisibility(View.VISIBLE);
 817				if (omemoEncryption && !message.isTrusted()) {
 818					viewHolder.encryption.setText(R.string.not_trusted);
 819				} else {
 820					viewHolder.encryption.setText(CryptoHelper.encryptionTypeToText(message.getEncryption()));
 821				}
 822			}
 823		}
 824
 825		displayStatus(viewHolder, message, type, darkBackground);
 826
 827		return view;
 828	}
 829
 830	private void promptOpenKeychainInstall(View view) {
 831		activity.showInstallPgpDialog();
 832	}
 833
 834	@Override
 835	public void notifyDataSetChanged() {
 836		listSelectionManager.onBeforeNotifyDataSetChanged();
 837		super.notifyDataSetChanged();
 838		listSelectionManager.onAfterNotifyDataSetChanged();
 839	}
 840
 841	private String transformText(CharSequence text, int start, int end, boolean forCopy) {
 842		SpannableStringBuilder builder = new SpannableStringBuilder(text);
 843		Object copySpan = new Object();
 844		builder.setSpan(copySpan, start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 845		DividerSpan[] dividerSpans = builder.getSpans(0, builder.length(), DividerSpan.class);
 846		for (DividerSpan dividerSpan : dividerSpans) {
 847			builder.replace(builder.getSpanStart(dividerSpan), builder.getSpanEnd(dividerSpan),
 848					dividerSpan.isLarge() ? "\n\n" : "\n");
 849		}
 850		start = builder.getSpanStart(copySpan);
 851		end = builder.getSpanEnd(copySpan);
 852		if (start == -1 || end == -1) return "";
 853		builder = new SpannableStringBuilder(builder, start, end);
 854		if (forCopy) {
 855			QuoteSpan[] quoteSpans = builder.getSpans(0, builder.length(), QuoteSpan.class);
 856			for (QuoteSpan quoteSpan : quoteSpans) {
 857				builder.insert(builder.getSpanStart(quoteSpan), "> ");
 858			}
 859		}
 860		return builder.toString();
 861	}
 862
 863	@Override
 864	public String transformTextForCopy(CharSequence text, int start, int end) {
 865		if (text instanceof Spanned) {
 866			return transformText(text, start, end, true);
 867		} else {
 868			return text.toString().substring(start, end);
 869		}
 870	}
 871
 872	public FileBackend getFileBackend() {
 873		return activity.xmppConnectionService.getFileBackend();
 874	}
 875
 876	public void stopAudioPlayer() {
 877		audioPlayer.stop();
 878	}
 879
 880	public void unregisterListenerInAudioPlayer() {
 881		audioPlayer.unregisterListener();
 882	}
 883
 884	public void startStopPending() {
 885		audioPlayer.startStopPending();
 886	}
 887
 888	public void openDownloadable(Message message) {
 889		if (ContextCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
 890			ConversationFragment.registerPendingMessage(activity, message);
 891			ActivityCompat.requestPermissions(activity, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, ConversationsActivity.REQUEST_OPEN_MESSAGE);
 892			return;
 893		}
 894		DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
 895		if (!file.exists()) {
 896			Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
 897			return;
 898		}
 899		Intent openIntent = new Intent(Intent.ACTION_VIEW);
 900		String mime = file.getMimeType();
 901		if (mime == null) {
 902			mime = "*/*";
 903		}
 904		Uri uri;
 905		try {
 906			uri = FileBackend.getUriForFile(activity, file);
 907		} catch (SecurityException e) {
 908			Log.d(Config.LOGTAG, "No permission to access " + file.getAbsolutePath(), e);
 909			Toast.makeText(activity, activity.getString(R.string.no_permission_to_access_x, file.getAbsolutePath()), Toast.LENGTH_SHORT).show();
 910			return;
 911		}
 912		openIntent.setDataAndType(uri, mime);
 913		openIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
 914		PackageManager manager = activity.getPackageManager();
 915		List<ResolveInfo> info = manager.queryIntentActivities(openIntent, 0);
 916		if (info.size() == 0) {
 917			openIntent.setDataAndType(uri, "*/*");
 918		}
 919		try {
 920			getContext().startActivity(openIntent);
 921		} catch (ActivityNotFoundException e) {
 922			Toast.makeText(activity, R.string.no_application_found_to_open_file, Toast.LENGTH_SHORT).show();
 923		}
 924	}
 925
 926	public void showLocation(Message message) {
 927		for (Intent intent : GeoHelper.createGeoIntentsFromMessage(activity, message)) {
 928			if (intent.resolveActivity(getContext().getPackageManager()) != null) {
 929				getContext().startActivity(intent);
 930				return;
 931			}
 932		}
 933		Toast.makeText(activity, R.string.no_application_found_to_display_location, Toast.LENGTH_SHORT).show();
 934	}
 935
 936	public void updatePreferences() {
 937		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
 938		this.mIndicateReceived = p.getBoolean("indicate_received", activity.getResources().getBoolean(R.bool.indicate_received));
 939		this.mUseGreenBackground = p.getBoolean("use_green_background", activity.getResources().getBoolean(R.bool.use_green_background));
 940	}
 941
 942	public void loadAvatar(Message message, ImageView imageView, int size) {
 943		if (cancelPotentialWork(message, imageView)) {
 944			final Bitmap bm = activity.avatarService().get(message, size, true);
 945			if (bm != null) {
 946				cancelPotentialWork(message, imageView);
 947				imageView.setImageBitmap(bm);
 948				imageView.setBackgroundColor(Color.TRANSPARENT);
 949			} else {
 950				@ColorInt int bg;
 951				if (message.getType() == Message.TYPE_STATUS && message.getCounterparts() != null && message.getCounterparts().size() > 1) {
 952					bg = Color.TRANSPARENT;
 953				} else {
 954					bg = UIHelper.getColorForName(UIHelper.getMessageDisplayName(message));
 955				}
 956				imageView.setBackgroundColor(bg);
 957				imageView.setImageDrawable(null);
 958				final BitmapWorkerTask task = new BitmapWorkerTask(imageView, size);
 959				final AsyncDrawable asyncDrawable = new AsyncDrawable(activity.getResources(), null, task);
 960				imageView.setImageDrawable(asyncDrawable);
 961				try {
 962					task.execute(message);
 963				} catch (final RejectedExecutionException ignored) {
 964				}
 965			}
 966		}
 967	}
 968
 969	public void setHighlightedTerm(List<String> terms) {
 970		this.highlightedTerm = terms == null ? null : StylingHelper.filterHighlightedWords(terms);
 971	}
 972
 973	public interface OnQuoteListener {
 974		void onQuote(String text);
 975	}
 976
 977	public interface OnContactPictureClicked {
 978		void onContactPictureClicked(Message message);
 979	}
 980
 981	public interface OnContactPictureLongClicked {
 982		void onContactPictureLongClicked(Message message);
 983	}
 984
 985	private static class ViewHolder {
 986
 987		public Button load_more_messages;
 988		public ImageView edit_indicator;
 989		public RelativeLayout audioPlayer;
 990		protected LinearLayout message_box;
 991		protected Button download_button;
 992		protected ImageView image;
 993		protected ImageView indicator;
 994		protected ImageView indicatorReceived;
 995		protected TextView time;
 996		protected CopyTextView messageBody;
 997		protected ImageView contact_picture;
 998		protected TextView status_message;
 999		protected TextView encryption;
1000	}
1001
1002	static class AsyncDrawable extends BitmapDrawable {
1003		private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
1004
1005		public AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
1006			super(res, bitmap);
1007			bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
1008		}
1009
1010		public BitmapWorkerTask getBitmapWorkerTask() {
1011			return bitmapWorkerTaskReference.get();
1012		}
1013	}
1014
1015	private class MessageBodyActionModeCallback implements ActionMode.Callback {
1016
1017		private final TextView textView;
1018
1019		public MessageBodyActionModeCallback(TextView textView) {
1020			this.textView = textView;
1021		}
1022
1023		@Override
1024		public boolean onCreateActionMode(ActionMode mode, Menu menu) {
1025			if (onQuoteListener != null) {
1026				int quoteResId = activity.getThemeResource(R.attr.icon_quote, R.drawable.ic_action_reply);
1027				// 3rd item is placed after "copy" item
1028				menu.add(0, android.R.id.button1, 3, R.string.quote).setIcon(quoteResId)
1029						.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
1030			}
1031			return false;
1032		}
1033
1034		@Override
1035		public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
1036			return false;
1037		}
1038
1039		@Override
1040		public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
1041			if (item.getItemId() == android.R.id.button1) {
1042				int start = textView.getSelectionStart();
1043				int end = textView.getSelectionEnd();
1044				if (end > start) {
1045					String text = transformText(textView.getText(), start, end, false);
1046					if (onQuoteListener != null) {
1047						onQuoteListener.onQuote(text);
1048					}
1049					mode.finish();
1050				}
1051				return true;
1052			}
1053			return false;
1054		}
1055
1056		@Override
1057		public void onDestroyActionMode(ActionMode mode) {
1058		}
1059	}
1060
1061	class BitmapWorkerTask extends AsyncTask<Message, Void, Bitmap> {
1062		private final WeakReference<ImageView> imageViewReference;
1063		private final int size;
1064		private Message message = null;
1065
1066		public BitmapWorkerTask(ImageView imageView, int size) {
1067			imageViewReference = new WeakReference<>(imageView);
1068			this.size = size;
1069		}
1070
1071		@Override
1072		protected Bitmap doInBackground(Message... params) {
1073			this.message = params[0];
1074			return activity.avatarService().get(this.message, size, isCancelled());
1075		}
1076
1077		@Override
1078		protected void onPostExecute(Bitmap bitmap) {
1079			if (bitmap != null && !isCancelled()) {
1080				final ImageView imageView = imageViewReference.get();
1081				if (imageView != null) {
1082					imageView.setImageBitmap(bitmap);
1083					imageView.setBackgroundColor(0x00000000);
1084				}
1085			}
1086		}
1087	}
1088}