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diff --git a/src/main/java/eu/siacs/conversations/utils/UIHelper.java b/src/main/java/eu/siacs/conversations/utils/UIHelper.java
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+++ b/src/main/java/eu/siacs/conversations/utils/UIHelper.java
@@ -0,0 +1,295 @@
+package eu.siacs.conversations.utils;
+
+import android.content.Context;
+import android.text.format.DateFormat;
+import android.text.format.DateUtils;
+import android.util.Pair;
+
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.Locale;
+
+import eu.siacs.conversations.R;
+import eu.siacs.conversations.entities.Contact;
+import eu.siacs.conversations.entities.Conversation;
+import eu.siacs.conversations.entities.Message;
+import eu.siacs.conversations.entities.Presence;
+import eu.siacs.conversations.entities.Transferable;
+import eu.siacs.conversations.xmpp.jid.Jid;
+
+public class UIHelper {
+
+ private static final ArrayList<String> LOCATION_QUESTIONS = new ArrayList<>(Arrays.asList(
+ "where are you", //en
+ "where are you now", //en
+ "where are you right now", //en
+ "whats your 20", //en
+ "what is your 20", //en
+ "what's your 20", //en
+ "whats your twenty", //en
+ "what is your twenty", //en
+ "what's your twenty", //en
+ "wo bist du", //de
+ "wo bist du jetzt", //de
+ "wo bist du gerade", //de
+ "wo seid ihr", //de
+ "wo seid ihr jetzt", //de
+ "wo seid ihr gerade", //de
+ "dónde estás", //es
+ "donde estas" //es
+ ));
+
+ private static final int SHORT_DATE_FLAGS = DateUtils.FORMAT_SHOW_DATE
+ | DateUtils.FORMAT_NO_YEAR | DateUtils.FORMAT_ABBREV_ALL;
+ private static final int FULL_DATE_FLAGS = DateUtils.FORMAT_SHOW_TIME
+ | DateUtils.FORMAT_ABBREV_ALL | DateUtils.FORMAT_SHOW_DATE;
+
+ public static String readableTimeDifference(Context context, long time) {
+ return readableTimeDifference(context, time, false);
+ }
+
+ public static String readableTimeDifferenceFull(Context context, long time) {
+ return readableTimeDifference(context, time, true);
+ }
+
+ private static String readableTimeDifference(Context context, long time,
+ boolean fullDate) {
+ if (time == 0) {
+ return context.getString(R.string.just_now);
+ }
+ Date date = new Date(time);
+ long difference = (System.currentTimeMillis() - time) / 1000;
+ if (difference < 60) {
+ return context.getString(R.string.just_now);
+ } else if (difference < 60 * 2) {
+ return context.getString(R.string.minute_ago);
+ } else if (difference < 60 * 15) {
+ return context.getString(R.string.minutes_ago,
+ Math.round(difference / 60.0));
+ } else if (today(date)) {
+ java.text.DateFormat df = DateFormat.getTimeFormat(context);
+ return df.format(date);
+ } else {
+ if (fullDate) {
+ return DateUtils.formatDateTime(context, date.getTime(),
+ FULL_DATE_FLAGS);
+ } else {
+ return DateUtils.formatDateTime(context, date.getTime(),
+ SHORT_DATE_FLAGS);
+ }
+ }
+ }
+
+ private static boolean today(Date date) {
+ return sameDay(date,new Date(System.currentTimeMillis()));
+ }
+
+ public static boolean sameDay(long timestamp1, long timestamp2) {
+ return sameDay(new Date(timestamp1),new Date(timestamp2));
+ }
+
+ private static boolean sameDay(Date a, Date b) {
+ Calendar cal1 = Calendar.getInstance();
+ Calendar cal2 = Calendar.getInstance();
+ cal1.setTime(a);
+ cal2.setTime(b);
+ return cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR)
+ && cal1.get(Calendar.DAY_OF_YEAR) == cal2
+ .get(Calendar.DAY_OF_YEAR);
+ }
+
+ public static String lastseen(Context context, long time) {
+ if (time == 0) {
+ return context.getString(R.string.never_seen);
+ }
+ long difference = (System.currentTimeMillis() - time) / 1000;
+ if (difference < 60) {
+ return context.getString(R.string.last_seen_now);
+ } else if (difference < 60 * 2) {
+ return context.getString(R.string.last_seen_min);
+ } else if (difference < 60 * 60) {
+ return context.getString(R.string.last_seen_mins,
+ Math.round(difference / 60.0));
+ } else if (difference < 60 * 60 * 2) {
+ return context.getString(R.string.last_seen_hour);
+ } else if (difference < 60 * 60 * 24) {
+ return context.getString(R.string.last_seen_hours,
+ Math.round(difference / (60.0 * 60.0)));
+ } else if (difference < 60 * 60 * 48) {
+ return context.getString(R.string.last_seen_day);
+ } else {
+ return context.getString(R.string.last_seen_days,
+ Math.round(difference / (60.0 * 60.0 * 24.0)));
+ }
+ }
+
+ public static int getColorForName(String name) {
+ if (name == null || name.isEmpty()) {
+ return 0xFF202020;
+ }
+ int colors[] = {0xFFe91e63, 0xFF9c27b0, 0xFF673ab7, 0xFF3f51b5,
+ 0xFF5677fc, 0xFF03a9f4, 0xFF00bcd4, 0xFF009688, 0xFFff5722,
+ 0xFF795548, 0xFF607d8b};
+ return colors[(int) ((name.hashCode() & 0xffffffffl) % colors.length)];
+ }
+
+ public static Pair<String,Boolean> getMessagePreview(final Context context, final Message message) {
+ final Transferable d = message.getTransferable();
+ if (d != null ) {
+ switch (d.getStatus()) {
+ case Transferable.STATUS_CHECKING:
+ return new Pair<>(context.getString(R.string.checking_x,
+ getFileDescriptionString(context,message)),true);
+ case Transferable.STATUS_DOWNLOADING:
+ return new Pair<>(context.getString(R.string.receiving_x_file,
+ getFileDescriptionString(context,message),
+ d.getProgress()),true);
+ case Transferable.STATUS_OFFER:
+ case Transferable.STATUS_OFFER_CHECK_FILESIZE:
+ return new Pair<>(context.getString(R.string.x_file_offered_for_download,
+ getFileDescriptionString(context,message)),true);
+ case Transferable.STATUS_DELETED:
+ return new Pair<>(context.getString(R.string.file_deleted),true);
+ case Transferable.STATUS_FAILED:
+ return new Pair<>(context.getString(R.string.file_transmission_failed),true);
+ case Transferable.STATUS_UPLOADING:
+ if (message.getStatus() == Message.STATUS_OFFERED) {
+ return new Pair<>(context.getString(R.string.offering_x_file,
+ getFileDescriptionString(context, message)), true);
+ } else {
+ return new Pair<>(context.getString(R.string.sending_x_file,
+ getFileDescriptionString(context, message)), true);
+ }
+ default:
+ return new Pair<>("",false);
+ }
+ } else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
+ return new Pair<>(context.getString(R.string.pgp_message),true);
+ } else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
+ return new Pair<>(context.getString(R.string.decryption_failed), true);
+ } else if (message.getType() == Message.TYPE_FILE || message.getType() == Message.TYPE_IMAGE) {
+ if (message.getStatus() == Message.STATUS_RECEIVED) {
+ return new Pair<>(context.getString(R.string.received_x_file,
+ getFileDescriptionString(context, message)), true);
+ } else {
+ return new Pair<>(getFileDescriptionString(context,message),true);
+ }
+ } else {
+ if (message.hasMeCommand()) {
+ return new Pair<>(message.getBodyReplacedMeCommand(UIHelper.getMessageDisplayName(message)), false);
+ } else if (GeoHelper.isGeoUri(message.getBody())) {
+ if (message.getStatus() == Message.STATUS_RECEIVED) {
+ return new Pair<>(context.getString(R.string.received_location), true);
+ } else {
+ return new Pair<>(context.getString(R.string.location), true);
+ }
+ } else if (message.treatAsDownloadable() == Message.Decision.MUST) {
+ return new Pair<>(context.getString(R.string.x_file_offered_for_download,
+ getFileDescriptionString(context,message)),true);
+ } else{
+ return new Pair<>(message.getBody(), false);
+ }
+ }
+ }
+
+ public static String getFileDescriptionString(final Context context, final Message message) {
+ if (message.getType() == Message.TYPE_IMAGE) {
+ return context.getString(R.string.image);
+ }
+ final String mime = message.getMimeType();
+ if (mime == null) {
+ return context.getString(R.string.file);
+ } else if (mime.startsWith("audio/")) {
+ return context.getString(R.string.audio);
+ } else if(mime.startsWith("video/")) {
+ return context.getString(R.string.video);
+ } else if (mime.startsWith("image/")) {
+ return context.getString(R.string.image);
+ } else if (mime.contains("pdf")) {
+ return context.getString(R.string.pdf_document) ;
+ } else if (mime.contains("application/vnd.android.package-archive")) {
+ return context.getString(R.string.apk) ;
+ } else if (mime.contains("vcard")) {
+ return context.getString(R.string.vcard) ;
+ } else {
+ return message.getRelativeFilePath();
+ }
+ }
+
+ public static String getMessageDisplayName(final Message message) {
+ final Conversation conversation = message.getConversation();
+ if (message.getStatus() == Message.STATUS_RECEIVED) {
+ final Contact contact = message.getContact();
+ if (conversation.getMode() == Conversation.MODE_MULTI) {
+ if (contact != null) {
+ return contact.getDisplayName();
+ } else {
+ return getDisplayedMucCounterpart(message.getCounterpart());
+ }
+ } else {
+ return contact != null ? contact.getDisplayName() : "";
+ }
+ } else {
+ if (conversation.getMode() == Conversation.MODE_MULTI) {
+ return conversation.getMucOptions().getSelf().getName();
+ } else {
+ final Jid jid = conversation.getAccount().getJid();
+ return jid.hasLocalpart() ? jid.getLocalpart() : jid.toDomainJid().toString();
+ }
+ }
+ }
+
+ public static String getStatusColor(Presence.Status status) {
+ switch (status) {
+ case ONLINE:
+ case CHAT:
+ return "#259B23";
+ case AWAY:
+ case XA:
+ return "#FF9800";
+ case DND:
+ return "#E51C23";
+ }
+ return "#CCCCCC";
+ }
+
+ private static String getDisplayedMucCounterpart(final Jid counterpart) {
+ if (counterpart==null) {
+ return "";
+ } else if (!counterpart.isBareJid()) {
+ return counterpart.getResourcepart();
+ } else {
+ return counterpart.toString();
+ }
+ }
+
+ public static boolean receivedLocationQuestion(Message message) {
+ if (message == null
+ || message.getStatus() != Message.STATUS_RECEIVED
+ || message.getType() != Message.TYPE_TEXT) {
+ return false;
+ }
+ String body = message.getBody() == null ? null : message.getBody().toLowerCase(Locale.getDefault());
+ body = body.replace("?","").replace("¿","");
+ return LOCATION_QUESTIONS.contains(body);
+ }
+
+ public static String getHumanReadableFileSize(long filesize) {
+ if (0 > filesize) {
+ return "?";
+ }
+ double size = Double.valueOf(filesize);
+ String[] sizes = {" bytes", " Kb", " Mb", " Gb", " Tb"};
+ int i = 0;
+ while (1023 < size) {
+ size /= 1024d;
+ ++i;
+ }
+ BigDecimal readableSize = new BigDecimal(size);
+ readableSize = readableSize.setScale(2, BigDecimal.ROUND_HALF_UP);
+ return readableSize.doubleValue() + sizes[i];
+ }
+}