MessageAdapter.java

  1package eu.siacs.conversations.ui.adapter;
  2
  3import android.content.ActivityNotFoundException;
  4import android.content.Intent;
  5import android.content.pm.PackageManager;
  6import android.content.pm.ResolveInfo;
  7import android.content.res.Resources;
  8import android.graphics.Bitmap;
  9import android.graphics.Typeface;
 10import android.graphics.drawable.BitmapDrawable;
 11import android.graphics.drawable.Drawable;
 12import android.net.Uri;
 13import android.os.AsyncTask;
 14import android.os.Build;
 15import android.support.v4.content.FileProvider;
 16import android.text.Spannable;
 17import android.text.SpannableString;
 18import android.text.SpannableStringBuilder;
 19import android.text.Spanned;
 20import android.text.style.ForegroundColorSpan;
 21import android.text.style.RelativeSizeSpan;
 22import android.text.style.StyleSpan;
 23import android.text.util.Linkify;
 24import android.util.DisplayMetrics;
 25import android.util.Patterns;
 26import android.view.View;
 27import android.view.View.OnClickListener;
 28import android.view.View.OnLongClickListener;
 29import android.view.ViewGroup;
 30import android.widget.ArrayAdapter;
 31import android.widget.Button;
 32import android.widget.ImageView;
 33import android.widget.LinearLayout;
 34import android.widget.TextView;
 35import android.widget.Toast;
 36
 37import java.lang.ref.WeakReference;
 38import java.net.URL;
 39import java.util.List;
 40import java.util.concurrent.RejectedExecutionException;
 41import java.util.regex.MatchResult;
 42import java.util.regex.Matcher;
 43import java.util.regex.Pattern;
 44
 45import eu.siacs.conversations.Config;
 46import eu.siacs.conversations.R;
 47import eu.siacs.conversations.crypto.axolotl.XmppAxolotlSession;
 48import eu.siacs.conversations.entities.Account;
 49import eu.siacs.conversations.entities.Conversation;
 50import eu.siacs.conversations.entities.DownloadableFile;
 51import eu.siacs.conversations.entities.Message;
 52import eu.siacs.conversations.entities.Message.FileParams;
 53import eu.siacs.conversations.entities.Transferable;
 54import eu.siacs.conversations.persistance.FileBackend;
 55import eu.siacs.conversations.ui.ConversationActivity;
 56import eu.siacs.conversations.ui.widget.ClickableMovementMethod;
 57import eu.siacs.conversations.ui.widget.ListSelectionManager;
 58import eu.siacs.conversations.utils.CryptoHelper;
 59import eu.siacs.conversations.utils.GeoHelper;
 60import eu.siacs.conversations.utils.UIHelper;
 61
 62public class MessageAdapter extends ArrayAdapter<Message> {
 63
 64	private static final int SENT = 0;
 65	private static final int RECEIVED = 1;
 66	private static final int STATUS = 2;
 67	private static final Pattern XMPP_PATTERN = Pattern
 68			.compile("xmpp\\:(?:(?:["
 69					+ Patterns.GOOD_IRI_CHAR
 70					+ "\\;\\/\\?\\@\\&\\=\\#\\~\\-\\.\\+\\!\\*\\'\\(\\)\\,\\_])"
 71					+ "|(?:\\%[a-fA-F0-9]{2}))+");
 72
 73	private ConversationActivity activity;
 74
 75	private DisplayMetrics metrics;
 76
 77	private OnContactPictureClicked mOnContactPictureClickedListener;
 78	private OnContactPictureLongClicked mOnContactPictureLongClickedListener;
 79
 80	private boolean mIndicateReceived = false;
 81	private boolean mUseGreenBackground = false;
 82
 83	private final ListSelectionManager listSelectionManager = new ListSelectionManager();
 84
 85	public MessageAdapter(ConversationActivity activity, List<Message> messages) {
 86		super(activity, 0, messages);
 87		this.activity = activity;
 88		metrics = getContext().getResources().getDisplayMetrics();
 89		updatePreferences();
 90	}
 91
 92	public void setOnContactPictureClicked(OnContactPictureClicked listener) {
 93		this.mOnContactPictureClickedListener = listener;
 94	}
 95
 96	public void setOnContactPictureLongClicked(
 97			OnContactPictureLongClicked listener) {
 98		this.mOnContactPictureLongClickedListener = listener;
 99			}
100
101	@Override
102	public int getViewTypeCount() {
103		return 3;
104	}
105
106	public int getItemViewType(Message message) {
107		if (message.getType() == Message.TYPE_STATUS) {
108			return STATUS;
109		} else if (message.getStatus() <= Message.STATUS_RECEIVED) {
110			return RECEIVED;
111		}
112
113		return SENT;
114	}
115
116	@Override
117	public int getItemViewType(int position) {
118		return this.getItemViewType(getItem(position));
119	}
120
121	private int getMessageTextColor(boolean onDark, boolean primary) {
122		if (onDark) {
123			return activity.getResources().getColor(primary ? R.color.white : R.color.white70);
124		} else {
125			return activity.getResources().getColor(primary ? R.color.black87 : R.color.black54);
126		}
127	}
128
129	private void displayStatus(ViewHolder viewHolder, Message message, int type, boolean darkBackground) {
130		String filesize = null;
131		String info = null;
132		boolean error = false;
133		if (viewHolder.indicatorReceived != null) {
134			viewHolder.indicatorReceived.setVisibility(View.GONE);
135		}
136
137		if (viewHolder.edit_indicator != null) {
138			if (message.edited()) {
139				viewHolder.edit_indicator.setVisibility(View.VISIBLE);
140				viewHolder.edit_indicator.setImageResource(darkBackground ? R.drawable.ic_mode_edit_white_18dp : R.drawable.ic_mode_edit_black_18dp);
141				viewHolder.edit_indicator.setAlpha(darkBackground ? 0.7f : 0.57f);
142			} else {
143				viewHolder.edit_indicator.setVisibility(View.GONE);
144			}
145		}
146		boolean multiReceived = message.getConversation().getMode() == Conversation.MODE_MULTI
147			&& message.getMergedStatus() <= Message.STATUS_RECEIVED;
148		if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE || message.getTransferable() != null) {
149			FileParams params = message.getFileParams();
150			if (params.size > (1.5 * 1024 * 1024)) {
151				filesize = params.size / (1024 * 1024)+ " MiB";
152			} else if (params.size > 0) {
153				filesize = params.size / 1024 + " KiB";
154			}
155			if (message.getTransferable() != null && message.getTransferable().getStatus() == Transferable.STATUS_FAILED) {
156				error = true;
157			}
158		}
159		switch (message.getMergedStatus()) {
160			case Message.STATUS_WAITING:
161				info = getContext().getString(R.string.waiting);
162				break;
163			case Message.STATUS_UNSEND:
164				Transferable d = message.getTransferable();
165				if (d!=null) {
166					info = getContext().getString(R.string.sending_file,d.getProgress());
167				} else {
168					info = getContext().getString(R.string.sending);
169				}
170				break;
171			case Message.STATUS_OFFERED:
172				info = getContext().getString(R.string.offering);
173				break;
174			case Message.STATUS_SEND_RECEIVED:
175				if (mIndicateReceived) {
176					viewHolder.indicatorReceived.setVisibility(View.VISIBLE);
177				}
178				break;
179			case Message.STATUS_SEND_DISPLAYED:
180				if (mIndicateReceived) {
181					viewHolder.indicatorReceived.setVisibility(View.VISIBLE);
182				}
183				break;
184			case Message.STATUS_SEND_FAILED:
185				info = getContext().getString(R.string.send_failed);
186				error = true;
187				break;
188			default:
189				if (multiReceived) {
190					info = UIHelper.getMessageDisplayName(message);
191				}
192				break;
193		}
194		if (error && type == SENT) {
195			viewHolder.time.setTextColor(activity.getWarningTextColor());
196		} else {
197			viewHolder.time.setTextColor(this.getMessageTextColor(darkBackground,false));
198		}
199		if (message.getEncryption() == Message.ENCRYPTION_NONE) {
200			viewHolder.indicator.setVisibility(View.GONE);
201		} else {
202			viewHolder.indicator.setImageResource(darkBackground ? R.drawable.ic_lock_white_18dp : R.drawable.ic_lock_black_18dp);
203			viewHolder.indicator.setVisibility(View.VISIBLE);
204			if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
205				XmppAxolotlSession.Trust trust = message.getConversation()
206						.getAccount().getAxolotlService().getFingerprintTrust(
207								message.getFingerprint());
208
209				if(trust == null || (!trust.trusted() && !trust.trustedInactive())) {
210					viewHolder.indicator.setColorFilter(activity.getWarningTextColor());
211					viewHolder.indicator.setAlpha(1.0f);
212				} else {
213					viewHolder.indicator.clearColorFilter();
214					if (darkBackground) {
215						viewHolder.indicator.setAlpha(0.7f);
216					} else {
217						viewHolder.indicator.setAlpha(0.57f);
218					}
219				}
220			} else {
221				viewHolder.indicator.clearColorFilter();
222				if (darkBackground) {
223					viewHolder.indicator.setAlpha(0.7f);
224				} else {
225					viewHolder.indicator.setAlpha(0.57f);
226				}
227			}
228		}
229
230		String formatedTime = UIHelper.readableTimeDifferenceFull(getContext(),
231				message.getMergedTimeSent());
232		if (message.getStatus() <= Message.STATUS_RECEIVED) {
233			if ((filesize != null) && (info != null)) {
234				viewHolder.time.setText(formatedTime + " \u00B7 " + filesize +" \u00B7 " + info);
235			} else if ((filesize == null) && (info != null)) {
236				viewHolder.time.setText(formatedTime + " \u00B7 " + info);
237			} else if ((filesize != null) && (info == null)) {
238				viewHolder.time.setText(formatedTime + " \u00B7 " + filesize);
239			} else {
240				viewHolder.time.setText(formatedTime);
241			}
242		} else {
243			if ((filesize != null) && (info != null)) {
244				viewHolder.time.setText(filesize + " \u00B7 " + info);
245			} else if ((filesize == null) && (info != null)) {
246				if (error) {
247					viewHolder.time.setText(info + " \u00B7 " + formatedTime);
248				} else {
249					viewHolder.time.setText(info);
250				}
251			} else if ((filesize != null) && (info == null)) {
252				viewHolder.time.setText(filesize + " \u00B7 " + formatedTime);
253			} else {
254				viewHolder.time.setText(formatedTime);
255			}
256		}
257	}
258
259	private void displayInfoMessage(ViewHolder viewHolder, String text, boolean darkBackground) {
260		if (viewHolder.download_button != null) {
261			viewHolder.download_button.setVisibility(View.GONE);
262		}
263		viewHolder.image.setVisibility(View.GONE);
264		viewHolder.messageBody.setVisibility(View.VISIBLE);
265		viewHolder.messageBody.setText(text);
266		viewHolder.messageBody.setTextColor(getMessageTextColor(darkBackground, false));
267		viewHolder.messageBody.setTypeface(null, Typeface.ITALIC);
268		viewHolder.messageBody.setTextIsSelectable(false);
269	}
270
271	private void displayDecryptionFailed(ViewHolder viewHolder, boolean darkBackground) {
272		if (viewHolder.download_button != null) {
273			viewHolder.download_button.setVisibility(View.GONE);
274		}
275		viewHolder.image.setVisibility(View.GONE);
276		viewHolder.messageBody.setVisibility(View.VISIBLE);
277		viewHolder.messageBody.setText(getContext().getString(
278				R.string.decryption_failed));
279		viewHolder.messageBody.setTextColor(getMessageTextColor(darkBackground, false));
280		viewHolder.messageBody.setTypeface(null, Typeface.NORMAL);
281		viewHolder.messageBody.setTextIsSelectable(false);
282	}
283
284	private void displayHeartMessage(final ViewHolder viewHolder, final String body) {
285		if (viewHolder.download_button != null) {
286			viewHolder.download_button.setVisibility(View.GONE);
287		}
288		viewHolder.image.setVisibility(View.GONE);
289		viewHolder.messageBody.setVisibility(View.VISIBLE);
290		viewHolder.messageBody.setIncludeFontPadding(false);
291		Spannable span = new SpannableString(body);
292		span.setSpan(new RelativeSizeSpan(4.0f), 0, body.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
293		span.setSpan(new ForegroundColorSpan(activity.getWarningTextColor()), 0, body.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
294		viewHolder.messageBody.setText(span);
295	}
296
297	private void displayTextMessage(final ViewHolder viewHolder, final Message message, boolean darkBackground, int type) {
298		if (viewHolder.download_button != null) {
299			viewHolder.download_button.setVisibility(View.GONE);
300		}
301		viewHolder.image.setVisibility(View.GONE);
302		viewHolder.messageBody.setVisibility(View.VISIBLE);
303		viewHolder.messageBody.setIncludeFontPadding(true);
304		if (message.getBody() != null) {
305			final String nick = UIHelper.getMessageDisplayName(message);
306			String body;
307			try {
308				body = message.getMergedBody().replaceAll("^" + Message.ME_COMMAND, nick + " ");
309			} catch (ArrayIndexOutOfBoundsException e) {
310				body = message.getMergedBody();
311			}
312			if (body.length() > Config.MAX_DISPLAY_MESSAGE_CHARS) {
313				body = body.substring(0, Config.MAX_DISPLAY_MESSAGE_CHARS)+"\u2026";
314			}
315			Spannable formattedBody = new SpannableString(body);
316			int i = body.indexOf(Message.MERGE_SEPARATOR);
317			while(i >= 0) {
318				final int end = i + Message.MERGE_SEPARATOR.length();
319				formattedBody.setSpan(new RelativeSizeSpan(0.3f),i,end,Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
320				i = body.indexOf(Message.MERGE_SEPARATOR,end);
321			}
322			if (message.getType() != Message.TYPE_PRIVATE) {
323				if (message.hasMeCommand()) {
324					formattedBody.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), 0, nick.length(),
325							Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
326				}
327			} else {
328				String privateMarker;
329				if (message.getStatus() <= Message.STATUS_RECEIVED) {
330					privateMarker = activity
331						.getString(R.string.private_message);
332				} else {
333					final String to;
334					if (message.getCounterpart() != null) {
335						to = message.getCounterpart().getResourcepart();
336					} else {
337						to = "";
338					}
339					privateMarker = activity.getString(R.string.private_message_to, to);
340				}
341				formattedBody = new SpannableStringBuilder().append(privateMarker).append(' ').append(formattedBody);
342				formattedBody.setSpan(new ForegroundColorSpan(getMessageTextColor(darkBackground,false)), 0, privateMarker
343						.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
344				formattedBody.setSpan(new StyleSpan(Typeface.BOLD), 0,
345						privateMarker.length(),
346						Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
347				if (message.hasMeCommand()) {
348					formattedBody.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), privateMarker.length() + 1,
349							privateMarker.length() + 1 + nick.length(),
350							Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
351				}
352			}
353			Linkify.addLinks(formattedBody, Linkify.WEB_URLS);
354			Linkify.addLinks(formattedBody, XMPP_PATTERN, "xmpp");
355			Linkify.addLinks(formattedBody, GeoHelper.GEO_URI, "geo");
356			viewHolder.messageBody.setAutoLinkMask(0);
357			viewHolder.messageBody.setText(formattedBody);
358			viewHolder.messageBody.setTextIsSelectable(true);
359			viewHolder.messageBody.setMovementMethod(ClickableMovementMethod.getInstance());
360			listSelectionManager.onUpdate(viewHolder.messageBody, message);
361		} else {
362			viewHolder.messageBody.setText("");
363			viewHolder.messageBody.setTextIsSelectable(false);
364		}
365		viewHolder.messageBody.setTextColor(this.getMessageTextColor(darkBackground, true));
366		viewHolder.messageBody.setLinkTextColor(this.getMessageTextColor(darkBackground, true));
367		viewHolder.messageBody.setHighlightColor(activity.getResources().getColor(darkBackground ? (type == SENT || !mUseGreenBackground ? R.color.black26 : R.color.grey800) : R.color.grey500));
368		viewHolder.messageBody.setTypeface(null, Typeface.NORMAL);
369	}
370
371	private void displayDownloadableMessage(ViewHolder viewHolder,
372			final Message message, String text) {
373		viewHolder.image.setVisibility(View.GONE);
374		viewHolder.messageBody.setVisibility(View.GONE);
375		viewHolder.download_button.setVisibility(View.VISIBLE);
376		viewHolder.download_button.setText(text);
377		viewHolder.download_button.setOnClickListener(new OnClickListener() {
378
379			@Override
380			public void onClick(View v) {
381				activity.startDownloadable(message);
382			}
383		});
384	}
385
386	private void displayOpenableMessage(ViewHolder viewHolder,final Message message) {
387		viewHolder.image.setVisibility(View.GONE);
388		viewHolder.messageBody.setVisibility(View.GONE);
389		viewHolder.download_button.setVisibility(View.VISIBLE);
390		viewHolder.download_button.setText(activity.getString(R.string.open_x_file, UIHelper.getFileDescriptionString(activity, message)));
391		viewHolder.download_button.setOnClickListener(new OnClickListener() {
392
393			@Override
394			public void onClick(View v) {
395				openDownloadable(message);
396			}
397		});
398	}
399
400	private void displayLocationMessage(ViewHolder viewHolder, final Message message) {
401		viewHolder.image.setVisibility(View.GONE);
402		viewHolder.messageBody.setVisibility(View.GONE);
403		viewHolder.download_button.setVisibility(View.VISIBLE);
404		viewHolder.download_button.setText(R.string.show_location);
405		viewHolder.download_button.setOnClickListener(new OnClickListener() {
406
407			@Override
408			public void onClick(View v) {
409				showLocation(message);
410			}
411		});
412	}
413
414	private void displayImageMessage(ViewHolder viewHolder,
415			final Message message) {
416		if (viewHolder.download_button != null) {
417			viewHolder.download_button.setVisibility(View.GONE);
418		}
419		viewHolder.messageBody.setVisibility(View.GONE);
420		viewHolder.image.setVisibility(View.VISIBLE);
421		FileParams params = message.getFileParams();
422		double target = metrics.density * 288;
423		int scaledW;
424		int scaledH;
425		if (Math.max(params.height, params.width) * metrics.density <= target) {
426			scaledW = (int) (params.width * metrics.density);
427			scaledH = (int) (params.height * metrics.density);
428		} else if (Math.max(params.height,params.width) <= target) {
429			scaledW = params.width;
430			scaledH = params.height;
431		} else if (params.width <= params.height) {
432			scaledW = (int) (params.width / ((double) params.height / target));
433			scaledH = (int) target;
434		} else {
435			scaledW = (int) target;
436			scaledH = (int) (params.height / ((double) params.width / target));
437		}
438		LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(scaledW, scaledH);
439		layoutParams.setMargins(0, (int) (metrics.density * 4), 0, (int) (metrics.density * 4));
440		viewHolder.image.setLayoutParams(layoutParams);
441		activity.loadBitmap(message, viewHolder.image);
442		viewHolder.image.setOnClickListener(new OnClickListener() {
443
444			@Override
445			public void onClick(View v) {
446				openDownloadable(message);
447			}
448		});
449	}
450
451	private void loadMoreMessages(Conversation conversation) {
452		conversation.setLastClearHistory(0);
453		activity.xmppConnectionService.databaseBackend.updateConversation(conversation);
454		conversation.setHasMessagesLeftOnServer(true);
455		conversation.setFirstMamReference(null);
456		long timestamp = conversation.getLastMessageTransmitted();
457		if (timestamp == 0) {
458			timestamp = System.currentTimeMillis();
459		}
460		activity.setMessagesLoaded();
461		activity.xmppConnectionService.getMessageArchiveService().query(conversation, 0, timestamp);
462		Toast.makeText(activity, R.string.fetching_history_from_server,Toast.LENGTH_LONG).show();
463	}
464
465	@Override
466	public View getView(int position, View view, ViewGroup parent) {
467		final Message message = getItem(position);
468		final boolean isInValidSession = message.isValidInSession();
469		final Conversation conversation = message.getConversation();
470		final Account account = conversation.getAccount();
471		final int type = getItemViewType(position);
472		ViewHolder viewHolder;
473		if (view == null) {
474			viewHolder = new ViewHolder();
475			switch (type) {
476				case SENT:
477					view = activity.getLayoutInflater().inflate(
478							R.layout.message_sent, parent, false);
479					viewHolder.message_box = (LinearLayout) view
480						.findViewById(R.id.message_box);
481					viewHolder.contact_picture = (ImageView) view
482						.findViewById(R.id.message_photo);
483					viewHolder.download_button = (Button) view
484						.findViewById(R.id.download_button);
485					viewHolder.indicator = (ImageView) view
486						.findViewById(R.id.security_indicator);
487					viewHolder.edit_indicator = (ImageView) view.findViewById(R.id.edit_indicator);
488					viewHolder.image = (ImageView) view
489						.findViewById(R.id.message_image);
490					viewHolder.messageBody = (TextView) view
491						.findViewById(R.id.message_body);
492					viewHolder.time = (TextView) view
493						.findViewById(R.id.message_time);
494					viewHolder.indicatorReceived = (ImageView) view
495						.findViewById(R.id.indicator_received);
496					break;
497				case RECEIVED:
498					view = activity.getLayoutInflater().inflate(
499							R.layout.message_received, parent, false);
500					viewHolder.message_box = (LinearLayout) view
501						.findViewById(R.id.message_box);
502					viewHolder.contact_picture = (ImageView) view
503						.findViewById(R.id.message_photo);
504					viewHolder.download_button = (Button) view
505						.findViewById(R.id.download_button);
506					viewHolder.indicator = (ImageView) view
507						.findViewById(R.id.security_indicator);
508					viewHolder.edit_indicator = (ImageView) view.findViewById(R.id.edit_indicator);
509					viewHolder.image = (ImageView) view
510						.findViewById(R.id.message_image);
511					viewHolder.messageBody = (TextView) view
512						.findViewById(R.id.message_body);
513					viewHolder.time = (TextView) view
514						.findViewById(R.id.message_time);
515					viewHolder.indicatorReceived = (ImageView) view
516						.findViewById(R.id.indicator_received);
517					viewHolder.encryption = (TextView) view.findViewById(R.id.message_encryption);
518					break;
519				case STATUS:
520					view = activity.getLayoutInflater().inflate(R.layout.message_status, parent, false);
521					viewHolder.contact_picture = (ImageView) view.findViewById(R.id.message_photo);
522					viewHolder.status_message = (TextView) view.findViewById(R.id.status_message);
523					viewHolder.load_more_messages = (Button) view.findViewById(R.id.load_more_messages);
524					break;
525				default:
526					viewHolder = null;
527					break;
528			}
529			if (viewHolder.messageBody != null) listSelectionManager.onCreate(viewHolder.messageBody);
530			view.setTag(viewHolder);
531		} else {
532			viewHolder = (ViewHolder) view.getTag();
533			if (viewHolder == null) {
534				return view;
535			}
536		}
537
538		boolean darkBackground = type == RECEIVED && (!isInValidSession || mUseGreenBackground) || activity.isDarkTheme();
539
540		if (type == STATUS) {
541			if ("LOAD_MORE".equals(message.getBody())) {
542				viewHolder.status_message.setVisibility(View.GONE);
543				viewHolder.contact_picture.setVisibility(View.GONE);
544				viewHolder.load_more_messages.setVisibility(View.VISIBLE);
545				viewHolder.load_more_messages.setOnClickListener(new OnClickListener() {
546					@Override
547					public void onClick(View v) {
548						loadMoreMessages(message.getConversation());
549					}
550				});
551			} else {
552				viewHolder.status_message.setVisibility(View.VISIBLE);
553				viewHolder.contact_picture.setVisibility(View.VISIBLE);
554				viewHolder.load_more_messages.setVisibility(View.GONE);
555				if (conversation.getMode() == Conversation.MODE_SINGLE) {
556					viewHolder.contact_picture.setImageBitmap(activity
557							.avatarService().get(conversation.getContact(),
558									activity.getPixel(32)));
559					viewHolder.contact_picture.setAlpha(0.5f);
560				}
561				viewHolder.status_message.setText(message.getBody());
562			}
563			return view;
564		} else {
565			loadAvatar(message, viewHolder.contact_picture);
566		}
567
568		viewHolder.contact_picture
569			.setOnClickListener(new OnClickListener() {
570
571				@Override
572				public void onClick(View v) {
573					if (MessageAdapter.this.mOnContactPictureClickedListener != null) {
574						MessageAdapter.this.mOnContactPictureClickedListener
575								.onContactPictureClicked(message);
576					}
577
578				}
579			});
580		viewHolder.contact_picture
581			.setOnLongClickListener(new OnLongClickListener() {
582
583				@Override
584				public boolean onLongClick(View v) {
585					if (MessageAdapter.this.mOnContactPictureLongClickedListener != null) {
586						MessageAdapter.this.mOnContactPictureLongClickedListener
587								.onContactPictureLongClicked(message);
588						return true;
589					} else {
590						return false;
591					}
592				}
593			});
594
595		final Transferable transferable = message.getTransferable();
596		if (transferable != null && transferable.getStatus() != Transferable.STATUS_UPLOADING) {
597			if (transferable.getStatus() == Transferable.STATUS_OFFER) {
598				displayDownloadableMessage(viewHolder,message,activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, message)));
599			} else if (transferable.getStatus() == Transferable.STATUS_OFFER_CHECK_FILESIZE) {
600				displayDownloadableMessage(viewHolder, message, activity.getString(R.string.check_x_filesize, UIHelper.getFileDescriptionString(activity, message)));
601			} else {
602				displayInfoMessage(viewHolder, UIHelper.getMessagePreview(activity, message).first,darkBackground);
603			}
604		} else if (message.getType() == Message.TYPE_IMAGE && message.getEncryption() != Message.ENCRYPTION_PGP && message.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED) {
605			displayImageMessage(viewHolder, message);
606		} else if (message.getType() == Message.TYPE_FILE && message.getEncryption() != Message.ENCRYPTION_PGP && message.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED) {
607			if (message.getFileParams().width > 0) {
608				displayImageMessage(viewHolder,message);
609			} else {
610				displayOpenableMessage(viewHolder, message);
611			}
612		} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
613			if (account.isPgpDecryptionServiceConnected()) {
614				if (!account.hasPendingPgpIntent(conversation)) {
615					displayInfoMessage(viewHolder, activity.getString(R.string.message_decrypting), darkBackground);
616				} else {
617					displayInfoMessage(viewHolder, activity.getString(R.string.pgp_message), darkBackground);
618				}
619			} else {
620				displayInfoMessage(viewHolder,activity.getString(R.string.install_openkeychain),darkBackground);
621				if (viewHolder != null) {
622					viewHolder.message_box
623						.setOnClickListener(new OnClickListener() {
624
625							@Override
626							public void onClick(View v) {
627								activity.showInstallPgpDialog();
628							}
629						});
630				}
631			}
632		} else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
633			displayDecryptionFailed(viewHolder,darkBackground);
634		} else {
635			if (GeoHelper.isGeoUri(message.getBody())) {
636				displayLocationMessage(viewHolder,message);
637			} else if (message.bodyIsHeart()) {
638				displayHeartMessage(viewHolder, message.getBody().trim());
639			} else if (message.treatAsDownloadable() == Message.Decision.MUST) {
640				try {
641					URL url = new URL(message.getBody());
642					displayDownloadableMessage(viewHolder,
643							message,
644							activity.getString(R.string.check_x_filesize_on_host,
645									UIHelper.getFileDescriptionString(activity, message),
646									url.getHost()));
647				} catch (Exception e) {
648					displayDownloadableMessage(viewHolder,
649							message,
650							activity.getString(R.string.check_x_filesize,
651									UIHelper.getFileDescriptionString(activity, message)));
652				}
653			} else {
654				displayTextMessage(viewHolder, message, darkBackground, type);
655			}
656		}
657
658		if (type == RECEIVED) {
659			if(isInValidSession) {
660				int bubble;
661				if (!mUseGreenBackground) {
662					bubble = activity.getThemeResource(R.attr.message_bubble_received_monochrome, R.drawable.message_bubble_received_white);
663				} else {
664					bubble = activity.getThemeResource(R.attr.message_bubble_received_green, R.drawable.message_bubble_received);
665				}
666				viewHolder.message_box.setBackgroundResource(bubble);
667				viewHolder.encryption.setVisibility(View.GONE);
668			} else {
669				viewHolder.message_box.setBackgroundResource(R.drawable.message_bubble_received_warning);
670				viewHolder.encryption.setVisibility(View.VISIBLE);
671				viewHolder.encryption.setText(CryptoHelper.encryptionTypeToText(message.getEncryption()));
672			}
673		}
674
675		displayStatus(viewHolder, message, type, darkBackground);
676
677		return view;
678	}
679
680	@Override
681	public void notifyDataSetChanged() {
682		listSelectionManager.onBeforeNotifyDataSetChanged();
683		super.notifyDataSetChanged();
684		listSelectionManager.onAfterNotifyDataSetChanged();
685	}
686
687	public void openDownloadable(Message message) {
688		DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
689		if (!file.exists()) {
690			Toast.makeText(activity,R.string.file_deleted,Toast.LENGTH_SHORT).show();
691			return;
692		}
693		Intent openIntent = new Intent(Intent.ACTION_VIEW);
694		String mime = file.getMimeType();
695		if (mime == null) {
696			mime = "*/*";
697		}
698		Uri uri;
699		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
700			try {
701				uri = FileProvider.getUriForFile(activity, FileBackend.CONVERSATIONS_FILE_PROVIDER, file);
702			} catch (IllegalArgumentException e) {
703				Toast.makeText(activity,activity.getString(R.string.no_permission_to_access_x,file.getAbsolutePath()), Toast.LENGTH_SHORT).show();
704				return;
705			}
706			openIntent.setDataAndType(uri, mime);
707			openIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
708		} else {
709			uri = Uri.fromFile(file);
710		}
711		openIntent.setDataAndType(uri, mime);
712		PackageManager manager = activity.getPackageManager();
713		List<ResolveInfo> info = manager.queryIntentActivities(openIntent, 0);
714		if (info.size() == 0) {
715			openIntent.setDataAndType(Uri.fromFile(file),"*/*");
716		}
717		try {
718			getContext().startActivity(openIntent);
719		}  catch (ActivityNotFoundException e) {
720			Toast.makeText(activity,R.string.no_application_found_to_open_file,Toast.LENGTH_SHORT).show();
721		}
722	}
723
724	public void showLocation(Message message) {
725		for(Intent intent : GeoHelper.createGeoIntentsFromMessage(message)) {
726			if (intent.resolveActivity(getContext().getPackageManager()) != null) {
727				getContext().startActivity(intent);
728				return;
729			}
730		}
731		Toast.makeText(activity,R.string.no_application_found_to_display_location,Toast.LENGTH_SHORT).show();
732	}
733
734	public void updatePreferences() {
735		this.mIndicateReceived = activity.indicateReceived();
736		this.mUseGreenBackground = activity.useGreenBackground();
737	}
738
739	public TextView getMessageBody(View view) {
740		final Object tag = view.getTag();
741		if (tag instanceof ViewHolder) {
742			final ViewHolder viewHolder = (ViewHolder) tag;
743			return viewHolder.messageBody;
744		}
745		return null;
746	}
747
748	public interface OnContactPictureClicked {
749		void onContactPictureClicked(Message message);
750	}
751
752	public interface OnContactPictureLongClicked {
753		void onContactPictureLongClicked(Message message);
754	}
755
756	private static class ViewHolder {
757
758		protected LinearLayout message_box;
759		protected Button download_button;
760		protected ImageView image;
761		protected ImageView indicator;
762		protected ImageView indicatorReceived;
763		protected TextView time;
764		protected TextView messageBody;
765		protected ImageView contact_picture;
766		protected TextView status_message;
767		protected TextView encryption;
768		public Button load_more_messages;
769		public ImageView edit_indicator;
770	}
771
772	class BitmapWorkerTask extends AsyncTask<Message, Void, Bitmap> {
773		private final WeakReference<ImageView> imageViewReference;
774		private Message message = null;
775
776		public BitmapWorkerTask(ImageView imageView) {
777			imageViewReference = new WeakReference<>(imageView);
778		}
779
780		@Override
781		protected Bitmap doInBackground(Message... params) {
782			return activity.avatarService().get(params[0], activity.getPixel(48), isCancelled());
783		}
784
785		@Override
786		protected void onPostExecute(Bitmap bitmap) {
787			if (bitmap != null && !isCancelled()) {
788				final ImageView imageView = imageViewReference.get();
789				if (imageView != null) {
790					imageView.setImageBitmap(bitmap);
791					imageView.setBackgroundColor(0x00000000);
792				}
793			}
794		}
795	}
796
797	public void loadAvatar(Message message, ImageView imageView) {
798		if (cancelPotentialWork(message, imageView)) {
799			final Bitmap bm = activity.avatarService().get(message, activity.getPixel(48), true);
800			if (bm != null) {
801				cancelPotentialWork(message, imageView);
802				imageView.setImageBitmap(bm);
803				imageView.setBackgroundColor(0x00000000);
804			} else {
805				imageView.setBackgroundColor(UIHelper.getColorForName(UIHelper.getMessageDisplayName(message)));
806				imageView.setImageDrawable(null);
807				final BitmapWorkerTask task = new BitmapWorkerTask(imageView);
808				final AsyncDrawable asyncDrawable = new AsyncDrawable(activity.getResources(), null, task);
809				imageView.setImageDrawable(asyncDrawable);
810				try {
811					task.execute(message);
812				} catch (final RejectedExecutionException ignored) {
813				}
814			}
815		}
816	}
817
818	public static boolean cancelPotentialWork(Message message, ImageView imageView) {
819		final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
820
821		if (bitmapWorkerTask != null) {
822			final Message oldMessage = bitmapWorkerTask.message;
823			if (oldMessage == null || message != oldMessage) {
824				bitmapWorkerTask.cancel(true);
825			} else {
826				return false;
827			}
828		}
829		return true;
830	}
831
832	private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
833		if (imageView != null) {
834			final Drawable drawable = imageView.getDrawable();
835			if (drawable instanceof AsyncDrawable) {
836				final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
837				return asyncDrawable.getBitmapWorkerTask();
838			}
839		}
840		return null;
841	}
842
843	static class AsyncDrawable extends BitmapDrawable {
844		private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
845
846		public AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
847			super(res, bitmap);
848			bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
849		}
850
851		public BitmapWorkerTask getBitmapWorkerTask() {
852			return bitmapWorkerTaskReference.get();
853		}
854	}
855}