further aligned javaDoc with Snackbar docs

src/main/java/com/owncloud/android/utils/DisplayUtils.java

@@ -1,760 +1,760 @@
-/*
- * Nextcloud Android client application
- *
- * @author Andy Scherzinger
- * @author Bartek Przybylski
- * @author David A. Velasco
- * Copyright (C) 2011  Bartek Przybylski
- * Copyright (C) 2015 ownCloud Inc.
- * Copyright (C) 2016 Andy Scherzinger
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
- * License as published by the Free Software Foundation; either
- * version 3 of the License, or any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
- *
- * You should have received a copy of the GNU Affero General Public
- * License along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.owncloud.android.utils;
-
-import android.accounts.Account;
-import android.accounts.AccountManager;
-import android.annotation.SuppressLint;
-import android.annotation.TargetApi;
-import android.app.Activity;
-import android.content.Context;
-import android.content.Intent;
-import android.content.res.Resources;
-import android.graphics.Bitmap;
-import android.graphics.Color;
-import android.graphics.Point;
-import android.graphics.drawable.Drawable;
-import android.graphics.drawable.PictureDrawable;
-import android.net.Uri;
-import android.os.Build;
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
-import android.support.annotation.StringRes;
-import android.support.design.widget.BottomNavigationView;
-import android.support.design.widget.Snackbar;
-import android.support.v7.widget.AppCompatDrawableManager;
-import android.text.Spannable;
-import android.text.SpannableStringBuilder;
-import android.text.TextUtils;
-import android.text.format.DateUtils;
-import android.text.style.StyleSpan;
-import android.util.Log;
-import android.view.Menu;
-import android.view.MenuItem;
-import android.view.View;
-
-import com.bumptech.glide.GenericRequestBuilder;
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.load.engine.DiskCacheStrategy;
-import com.bumptech.glide.load.model.StreamEncoder;
-import com.bumptech.glide.load.resource.file.FileToStreamDecoder;
-import com.bumptech.glide.request.target.SimpleTarget;
-import com.bumptech.glide.request.target.Target;
-import com.caverock.androidsvg.SVG;
-import com.owncloud.android.MainApp;
-import com.owncloud.android.R;
-import com.owncloud.android.authentication.AccountUtils;
-import com.owncloud.android.datamodel.ArbitraryDataProvider;
-import com.owncloud.android.datamodel.FileDataStorageManager;
-import com.owncloud.android.datamodel.OCFile;
-import com.owncloud.android.datamodel.ThumbnailsCacheManager;
-import com.owncloud.android.lib.common.OwnCloudAccount;
-import com.owncloud.android.lib.common.utils.Log_OC;
-import com.owncloud.android.lib.resources.files.SearchOperation;
-import com.owncloud.android.ui.TextDrawable;
-import com.owncloud.android.ui.activity.FileDisplayActivity;
-import com.owncloud.android.ui.events.MenuItemClickEvent;
-import com.owncloud.android.ui.events.SearchEvent;
-import com.owncloud.android.ui.fragment.OCFileListFragment;
-import com.owncloud.android.utils.svg.SvgDecoder;
-import com.owncloud.android.utils.svg.SvgDrawableTranscoder;
-
-import org.greenrobot.eventbus.EventBus;
-import org.parceler.Parcels;
-
-import java.io.BufferedReader;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.lang.reflect.Constructor;
-import java.lang.reflect.Method;
-import java.math.BigDecimal;
-import java.net.IDN;
-import java.text.DateFormat;
-import java.util.Collection;
-import java.util.Date;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.Locale;
-import java.util.Map;
-import java.util.Set;
-
-/**
- * A helper class for UI/display related operations.
- */
-public class DisplayUtils {
-    private static final String TAG = DisplayUtils.class.getSimpleName();
-
-    private static final String[] sizeSuffixes = {"B", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"};
-    private static final int[] sizeScales = {0, 0, 1, 1, 1, 2, 2, 2, 2};
-    private static final int RELATIVE_THRESHOLD_WARNING = 90;
-    private static final int RELATIVE_THRESHOLD_CRITICAL = 95;
-    private static final String MIME_TYPE_UNKNOWN = "Unknown type";
-
-    private static final String HTTP_PROTOCOLL = "http://";
-    private static final String HTTPS_PROTOCOLL = "https://";
-    private static final String TWITTER_HANDLE_PREFIX = "@";
-
-    private static Map<String, String> mimeType2HumanReadable;
-
-    static {
-        mimeType2HumanReadable = new HashMap<>();
-        // images
-        mimeType2HumanReadable.put("image/jpeg", "JPEG image");
-        mimeType2HumanReadable.put("image/jpg", "JPEG image");
-        mimeType2HumanReadable.put("image/png", "PNG image");
-        mimeType2HumanReadable.put("image/bmp", "Bitmap image");
-        mimeType2HumanReadable.put("image/gif", "GIF image");
-        mimeType2HumanReadable.put("image/svg+xml", "JPEG image");
-        mimeType2HumanReadable.put("image/tiff", "TIFF image");
-        // music
-        mimeType2HumanReadable.put("audio/mpeg", "MP3 music file");
-        mimeType2HumanReadable.put("application/ogg", "OGG music file");
-    }
-
-    /**
-     * Converts the file size in bytes to human readable output.
-     * <ul>
-     *     <li>appends a size suffix, e.g. B, KB, MB etc.</li>
-     *     <li>rounds the size based on the suffix to 0,1 or 2 decimals</li>
-     * </ul>
-     *
-     * @param bytes Input file size
-     * @return something readable like "12 MB", {@link com.owncloud.android.R.string#common_pending} for negative
-     * byte values
-     */
-    public static String bytesToHumanReadable(long bytes) {
-        if (bytes < 0) {
-            return MainApp.getAppContext().getString(R.string.common_pending);
-        } else {
-            double result = bytes;
-            int suffixIndex = 0;
-            while (result > 1024 && suffixIndex < sizeSuffixes.length) {
-                result /= 1024.;
-                suffixIndex++;
-            }
-
-            return new BigDecimal(String.valueOf(result)).setScale(
-                    sizeScales[suffixIndex], BigDecimal.ROUND_HALF_UP) + " " + sizeSuffixes[suffixIndex];
-        }
-    }
-
-    /**
-     * Converts MIME types like "image/jpg" to more end user friendly output
-     * like "JPG image".
-     *
-     * @param mimetype MIME type to convert
-     * @return A human friendly version of the MIME type, {@link #MIME_TYPE_UNKNOWN} if it can't be converted
-     */
-    public static String convertMIMEtoPrettyPrint(String mimetype) {
-        if (mimeType2HumanReadable.containsKey(mimetype)) {
-            return mimeType2HumanReadable.get(mimetype);
-        }
-        if (mimetype.split("/").length >= 2) {
-            return mimetype.split("/")[1].toUpperCase(Locale.getDefault()) + " file";
-        }
-        return MIME_TYPE_UNKNOWN;
-    }
-
-    /**
-     * Converts Unix time to human readable format
-     *
-     * @param milliseconds that have passed since 01/01/1970
-     * @return The human readable time for the users locale
-     */
-    public static String unixTimeToHumanReadable(long milliseconds) {
-        Date date = new Date(milliseconds);
-        DateFormat df = DateFormat.getDateTimeInstance();
-        return df.format(date);
-    }
-
-    /**
-     * beautifies a given URL by removing any http/https protocol prefix.
-     *
-     * @param url to be beautified url
-     * @return beautified url
-     */
-    public static String beautifyURL(@Nullable String url) {
-        if (TextUtils.isEmpty(url)) {
-            return "";
-        }
-
-        if (url.length() >= 7 && url.substring(0, 7).equalsIgnoreCase(HTTP_PROTOCOLL)) {
-            return url.substring(HTTP_PROTOCOLL.length()).trim();
-        }
-
-        if (url.length() >= 8 && url.substring(0, 8).equalsIgnoreCase(HTTPS_PROTOCOLL)) {
-            return url.substring(HTTPS_PROTOCOLL.length()).trim();
-        }
-
-        return url.trim();
-    }
-
-    /**
-     * beautifies a given twitter handle by prefixing it with an @ in case it is missing.
-     *
-     * @param handle to be beautified twitter handle
-     * @return beautified twitter handle
-     */
-    public static String beautifyTwitterHandle(@Nullable String handle) {
-        if (handle != null) {
-            String trimmedHandle = handle.trim();
-
-            if (TextUtils.isEmpty(trimmedHandle)) {
-                return "";
-            }
-
-            if (trimmedHandle.startsWith(TWITTER_HANDLE_PREFIX)) {
-                return trimmedHandle;
-            } else {
-                return TWITTER_HANDLE_PREFIX + trimmedHandle;
-            }
-        } else {
-            return "";
-        }
-    }
-
-    /**
-     * Converts an internationalized domain name (IDN) in an URL to and from ASCII/Unicode.
-     *
-     * @param url the URL where the domain name should be converted
-     * @param toASCII if true converts from Unicode to ASCII, if false converts from ASCII to Unicode
-     * @return the URL containing the converted domain name
-     */
-    @TargetApi(Build.VERSION_CODES.GINGERBREAD)
-    public static String convertIdn(String url, boolean toASCII) {
-
-        String urlNoDots = url;
-        String dots = "";
-        while (urlNoDots.startsWith(".")) {
-            urlNoDots = url.substring(1);
-            dots = dots + ".";
-        }
-
-        // Find host name after '//' or '@'
-        int hostStart = 0;
-        if (urlNoDots.contains("//")) {
-            hostStart = url.indexOf("//") + "//".length();
-        } else if (url.contains("@")) {
-            hostStart = url.indexOf('@') + "@".length();
-        }
-
-        int hostEnd = url.substring(hostStart).indexOf("/");
-        // Handle URL which doesn't have a path (path is implicitly '/')
-        hostEnd = (hostEnd == -1 ? urlNoDots.length() : hostStart + hostEnd);
-
-        String host = urlNoDots.substring(hostStart, hostEnd);
-        host = (toASCII ? IDN.toASCII(host) : IDN.toUnicode(host));
-
-        return dots + urlNoDots.substring(0, hostStart) + host + urlNoDots.substring(hostEnd);
-    }
-
-    /**
-     * creates the display string for an account.
-     *
-     * @param context the actual activity
-     * @param savedAccount the actual, saved account
-     * @param accountName the account name
-     * @param fallbackString String to be used in case of an error
-     * @return the display string for the given account data
-     */
-    public static String getAccountNameDisplayText(Context context, Account savedAccount, String accountName, String
-            fallbackString) {
-        try {
-            return new OwnCloudAccount(savedAccount, context).getDisplayName()
-                    + "@"
-                    + convertIdn(accountName.substring(accountName.lastIndexOf('@') + 1), false);
-        } catch (Exception e) {
-            Log_OC.w(TAG, "Couldn't get display name for account, using old style");
-            return fallbackString;
-        }
-    }
-
-    /**
-     * converts an array of accounts into a set of account names.
-     *
-     * @param accountList the account array
-     * @return set of account names
-     */
-    public static Set<String> toAccountNameSet(Collection<Account> accountList) {
-        Set<String> actualAccounts = new HashSet<>(accountList.size());
-        for (Account account : accountList) {
-            actualAccounts.add(account.name);
-        }
-        return actualAccounts;
-    }
-
-    /**
-     * calculates the relative time string based on the given modification timestamp.
-     *
-     * @param context the app's context
-     * @param modificationTimestamp the UNIX timestamp of the file modification time.
-     * @return a relative time string
-     */
-    public static CharSequence getRelativeTimestamp(Context context, long modificationTimestamp) {
-        return getRelativeDateTimeString(context, modificationTimestamp, DateUtils.SECOND_IN_MILLIS,
-                DateUtils.WEEK_IN_MILLIS, 0);
-    }
-
-
-    /**
-     * determines the info level color based on certain thresholds
-     * {@link #RELATIVE_THRESHOLD_WARNING} and {@link #RELATIVE_THRESHOLD_CRITICAL}.
-     *
-     * @param context  the app's context
-     * @param relative relative value for which the info level color should be looked up
-     * @return info level color
-     */
-    public static int getRelativeInfoColor(Context context, int relative) {
-        if (relative < RELATIVE_THRESHOLD_WARNING) {
-            if (ThemeUtils.colorToHexString(ThemeUtils.primaryColor(context)).equalsIgnoreCase(
-                    ThemeUtils.colorToHexString(context.getResources().getColor(R.color.primary)))) {
-                return context.getResources().getColor(R.color.infolevel_info);
-            } else {
-                return Color.GRAY;
-            }
-        } else if (relative >= RELATIVE_THRESHOLD_WARNING && relative < RELATIVE_THRESHOLD_CRITICAL) {
-            return context.getResources().getColor(R.color.infolevel_warning);
-        } else {
-            return context.getResources().getColor(R.color.infolevel_critical);
-        }
-    }
-
-    public static CharSequence getRelativeDateTimeString(Context c, long time, long minResolution,
-                                                         long transitionResolution, int flags) {
-
-        CharSequence dateString = "";
-
-        // in Future
-        if (time > System.currentTimeMillis()) {
-            return DisplayUtils.unixTimeToHumanReadable(time);
-        }
-        // < 60 seconds -> seconds ago
-        else if ((System.currentTimeMillis() - time) < 60 * 1000 && minResolution == DateUtils.SECOND_IN_MILLIS) {
-            return c.getString(R.string.file_list_seconds_ago);
-        } else {
-            dateString = DateUtils.getRelativeDateTimeString(c, time, minResolution, transitionResolution, flags);
-        }
-
-        String[] parts = dateString.toString().split(",");
-        if (parts.length == 2) {
-            if (parts[1].contains(":") && !parts[0].contains(":")) {
-                return parts[0];
-            } else if (parts[0].contains(":") && !parts[1].contains(":")) {
-                return parts[1];
-            }
-        }
-        // dateString contains unexpected format. fallback: use relative date time string from android api as is.
-        return dateString.toString();
-    }
-
-    /**
-     * Update the passed path removing the last "/" if it is not the root folder.
-     *
-     * @param path the path to be trimmed
-     */
-    public static String getPathWithoutLastSlash(String path) {
-
-        // Remove last slash from path
-        if (path.length() > 1 && path.charAt(path.length() - 1) == OCFile.PATH_SEPARATOR.charAt(0)) {
-            return path.substring(0, path.length() - 1);
-        }
-
-        return path;
-    }
-
-    /**
-     * Gets the screen size in pixels.
-     *
-     * @param caller Activity calling; needed to get access to the {@link android.view.WindowManager}
-     * @return Size in pixels of the screen, or default {@link Point} if caller is null
-     */
-    public static Point getScreenSize(Activity caller) {
-        Point size = new Point();
-        if (caller != null) {
-            caller.getWindowManager().getDefaultDisplay().getSize(size);
-        }
-        return size;
-    }
-
-    /**
-     * styling of given spanText within a given text.
-     *
-     * @param text     the non styled complete text
-     * @param spanText the to be styled text
-     * @param style    the style to be applied
-     */
-    public static SpannableStringBuilder createTextWithSpan(String text, String spanText, StyleSpan style) {
-        if (text == null) {
-            return null;
-        }
-
-        SpannableStringBuilder sb = new SpannableStringBuilder(text);
-        if(spanText == null) {
-            return sb;
-        }
-
-        int start = text.lastIndexOf(spanText);
-
-        if (start < 0) {
-            return sb;
-        }
-
-        int end = start + spanText.length();
-        sb.setSpan(style, start, end, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
-        return sb;
-    }
-
-    public interface AvatarGenerationListener {
-        void avatarGenerated(Drawable avatarDrawable, Object callContext);
-
-        boolean shouldCallGeneratedCallback(String tag, Object callContext);
-    }
-
-    /**
-     * fetches and sets the avatar of the given account in the passed callContext
-     *
-     * @param account        the account to be used to connect to server
-     * @param avatarRadius   the avatar radius
-     * @param resources      reference for density information
-     * @param storageManager reference for caching purposes
-     * @param callContext    which context is called to set the generated avatar
-     */
-    public static void setAvatar(@NonNull Account account, AvatarGenerationListener listener,
-                                 float avatarRadius, Resources resources, FileDataStorageManager storageManager,
-                                 Object callContext, Context context) {
-
-        AccountManager accountManager = AccountManager.get(context);
-        String userId = accountManager.getUserData(account,
-                com.owncloud.android.lib.common.accounts.AccountUtils.Constants.KEY_USER_ID);
-
-        setAvatar(account, userId, listener, avatarRadius, resources, storageManager, callContext, context);
-    }
-
-    /**
-     * fetches and sets the avatar of the given account in the passed callContext
-     *
-     * @param account        the account to be used to connect to server
-     * @param userId         the userId which avatar should be set
-     * @param avatarRadius   the avatar radius
-     * @param resources      reference for density information
-     * @param storageManager reference for caching purposes
-     * @param callContext    which context is called to set the generated avatar
-     */
-    public static void setAvatar(@NonNull Account account, @NonNull String userId, AvatarGenerationListener listener,
-                                 float avatarRadius, Resources resources, FileDataStorageManager storageManager,
-                                 Object callContext, Context context) {
-        if (callContext instanceof View) {
-            ((View) callContext).setContentDescription(account.name);
-        }
-
-        ArbitraryDataProvider arbitraryDataProvider = new ArbitraryDataProvider(context.getContentResolver());
-
-        String serverName = account.name.substring(account.name.lastIndexOf('@') + 1, account.name.length());
-        String eTag = arbitraryDataProvider.getValue(userId + "@" + serverName, ThumbnailsCacheManager.AVATAR);
-        String avatarKey = "a_" + userId + "_" + serverName + "_" + eTag;
-
-        // first show old one
-        Drawable avatar = BitmapUtils.bitmapToCircularBitmapDrawable(resources,
-                ThumbnailsCacheManager.getBitmapFromDiskCache(avatarKey));
-
-        // if no one exists, show colored icon with initial char
-        if (avatar == null) {
-            try {
-                avatar = TextDrawable.createAvatarByUserId(userId, avatarRadius);
-            } catch (Exception e) {
-                Log_OC.e(TAG, "Error calculating RGB value for active account icon.", e);
-                avatar = resources.getDrawable(R.drawable.account_circle_white);
-            }
-        }
-
-        // check for new avatar, eTag is compared, so only new one is downloaded
-        if (ThumbnailsCacheManager.cancelPotentialAvatarWork(userId, callContext)) {
-            final ThumbnailsCacheManager.AvatarGenerationTask task =
-                    new ThumbnailsCacheManager.AvatarGenerationTask(listener, callContext, storageManager,
-                            account, resources, avatarRadius, userId, serverName, context);
-
-            final ThumbnailsCacheManager.AsyncAvatarDrawable asyncDrawable =
-                    new ThumbnailsCacheManager.AsyncAvatarDrawable(resources, avatar, task);
-            listener.avatarGenerated(asyncDrawable, callContext);
-            task.execute(userId);
-        }
-    }
-
-    public static void downloadIcon(Context context, String iconUrl, SimpleTarget imageView, int placeholder,
-                                    int width, int height) {
-        try {
-            if (iconUrl.endsWith(".svg")) {
-                downloadSVGIcon(context, iconUrl, imageView, placeholder, width, height);
-            } else {
-                downloadPNGIcon(context, iconUrl, imageView, placeholder);
-            }
-        } catch (Exception e) {
-            Log_OC.d(TAG, "not setting image as activity is destroyed");
-        }
-    }
-
-    private static void downloadPNGIcon(Context context, String iconUrl, SimpleTarget imageView, int placeholder) {
-        Glide
-                .with(context)
-                .load(iconUrl)
-                .centerCrop()
-                .placeholder(placeholder)
-                .error(placeholder)
-                .crossFade()
-                .into(imageView);
-    }
-
-    private static void downloadSVGIcon(Context context, String iconUrl, SimpleTarget imageView, int placeholder,
-                                        int width, int height) {
-        GenericRequestBuilder<Uri, InputStream, SVG, PictureDrawable> requestBuilder = Glide.with(context)
-                .using(Glide.buildStreamModelLoader(Uri.class, context), InputStream.class)
-                .from(Uri.class)
-                .as(SVG.class)
-                .transcode(new SvgDrawableTranscoder(), PictureDrawable.class)
-                .sourceEncoder(new StreamEncoder())
-                .cacheDecoder(new FileToStreamDecoder<>(new SvgDecoder(height, width)))
-                .decoder(new SvgDecoder(height, width))
-                .placeholder(placeholder)
-                .error(placeholder)
-                .animate(android.R.anim.fade_in);
-
-
-        Uri uri = Uri.parse(iconUrl);
-        requestBuilder
-                .diskCacheStrategy(DiskCacheStrategy.SOURCE)
-                .load(uri)
-                .into(imageView);
-    }
-
-    public static Bitmap downloadImageSynchronous(Context context, String imageUrl) {
-        try {
-            return Glide.with(context)
-                    .load(imageUrl)
-                    .asBitmap()
-                    .diskCacheStrategy(DiskCacheStrategy.NONE)
-                    .skipMemoryCache(true)
-                    .into(Target.SIZE_ORIGINAL, Target.SIZE_ORIGINAL)
-                    .get();
-        } catch (Exception e) {
-            Log_OC.e(TAG, "Could not download image " + imageUrl);
-            return null;
-        }
-    }
-
-    public static void setupBottomBar(BottomNavigationView view, Resources resources, final Activity activity,
-                                      int checkedMenuItem) {
-
-        Menu menu = view.getMenu();
-
-        Account account = AccountUtils.getCurrentOwnCloudAccount(MainApp.getAppContext());
-        boolean searchSupported = AccountUtils.hasSearchSupport(account);
-
-        if (!searchSupported) {
-            menu.removeItem(R.id.nav_bar_favorites);
-            menu.removeItem(R.id.nav_bar_photos);
-        }
-
-        if (resources.getBoolean(R.bool.use_home)) {
-            menu.findItem(R.id.nav_bar_files).setTitle(resources.
-                    getString(R.string.drawer_item_home));
-            menu.findItem(R.id.nav_bar_files).setIcon(R.drawable.ic_home);
-        }
-
-        setBottomBarItem(view, checkedMenuItem);
-
-        view.setOnNavigationItemSelectedListener(
-                new BottomNavigationView.OnNavigationItemSelectedListener() {
-                    @Override
-                    public boolean onNavigationItemSelected(@NonNull MenuItem item) {
-                        switch (item.getItemId()) {
-                            case R.id.nav_bar_files:
-                                EventBus.getDefault().post(new MenuItemClickEvent(item));
-                                if (activity != null) {
-                                    activity.invalidateOptionsMenu();
-                                }
-                                break;
-                            case R.id.nav_bar_favorites:
-                                SearchEvent favoritesEvent = new SearchEvent("",
-                                        SearchOperation.SearchType.FAVORITE_SEARCH,
-                                        SearchEvent.UnsetType.UNSET_DRAWER);
-
-                                switchToSearchFragment(activity, favoritesEvent);
-                                break;
-                            case R.id.nav_bar_photos:
-                                SearchEvent photosEvent = new SearchEvent("image/%",
-                                        SearchOperation.SearchType.CONTENT_TYPE_SEARCH,
-                                        SearchEvent.UnsetType.UNSET_DRAWER);
-
-                                switchToSearchFragment(activity, photosEvent);
-                                break;
-                            case R.id.nav_bar_settings:
-                                EventBus.getDefault().post(new MenuItemClickEvent(item));
-                                break;
-                            default:
-                                break;
-                        }
-                        return true;
-                    }
-                });
-    }
-
-    public static void setBottomBarItem(BottomNavigationView view, int checkedMenuItem) {
-        Menu menu = view.getMenu();
-
-        for (int i = 0; i < menu.size(); i++) {
-            menu.getItem(i).setChecked(false);
-        }
-
-        if (checkedMenuItem != -1) {
-            menu.findItem(checkedMenuItem).setChecked(true);
-        }
-    }
-
-    private static void switchToSearchFragment(Activity activity, SearchEvent event) {
-        if (activity instanceof FileDisplayActivity) {
-            EventBus.getDefault().post(event);
-        } else {
-            Intent recentlyAddedIntent = new Intent(activity.getBaseContext(), FileDisplayActivity.class);
-            recentlyAddedIntent.putExtra(OCFileListFragment.SEARCH_EVENT, Parcels.wrap(event));
-            recentlyAddedIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
-            activity.startActivity(recentlyAddedIntent);
-        }
-    }
-
-
-    /**
-     * Get String data from a InputStream
-     *
-     * @param inputStream        The File InputStream
-     */
-    public static String getData(InputStream inputStream) {
-
-        BufferedReader buffreader = new BufferedReader(new InputStreamReader(inputStream));
-        String line;
-        StringBuilder text = new StringBuilder();
-        try {
-            while ((line = buffreader.readLine()) != null) {
-                text.append(line);
-                text.append('\n');
-            }
-        } catch (IOException e) {
-            Log_OC.e(TAG, e.getMessage());
-        }
-        return text.toString();
-    }
-
-    /**
-     * Show a temporary message in a Snackbar bound to the content view.
-     *
-     * @param activity Activity to which's content view the Snackbar is bound.
-     * @param messageResource Message to show.
-     */
-    public static void showSnackMessage(Activity activity, @StringRes int messageResource) {
-        Snackbar.make(activity.findViewById(android.R.id.content), messageResource, Snackbar.LENGTH_LONG).show();
-    }
-
-    /**
-     * Show a temporary message in a Snackbar bound to the given view.
-     *
-     * @param view the view the Snackbar is bound to.
-     * @param messageResource Message to show.
-     */
-    public static void showSnackMessage(View view, @StringRes int messageResource) {
-        Snackbar.make(view, messageResource, Snackbar.LENGTH_LONG).show();
-    }
-
-    /**
-     * create a temporary message in a Snackbar bound to the given view.
-     *
-     * @param view the view the Snackbar is bound to.
-     * @param messageResource Message to show.
-     */
-    public static Snackbar createSnackbar(View view, @StringRes int messageResource, int length) {
-        return Snackbar.make(view, messageResource, length);
-    }
-
-    /**
-     * Show a temporary message in a Snackbar bound to the content view.
-     *
-     * @param activity        Activity to which's content view the Snackbar is bound.
-     * @param messageResource Resource id for the format string - message to show.
-     * @param formatArgs      The format arguments that will be used for substitution.
-     */
-    public static void showSnackMessage(Activity activity, @StringRes int messageResource, Object... formatArgs) {
-        showSnackMessage(activity, activity.findViewById(android.R.id.content), messageResource, formatArgs);
-    }
-
-    /**
-     * Show a temporary message in a Snackbar bound to the content view.
-     *
-     * @param context         to laod resources.
-     * @param view            content view the Snackbar is bound to.
-     * @param messageResource Resource id for the format string - message to show.
-     * @param formatArgs      The format arguments that will be used for substitution.
-     */
-    public static void showSnackMessage(Context context, View view, @StringRes int messageResource, Object... formatArgs) {
-        Snackbar.make(
-                view,
-                String.format(context.getString(messageResource, formatArgs)),
-                Snackbar.LENGTH_LONG)
-                .show();
-    }
-
-    /**
-     * Show a temporary message in a Snackbar bound to the content view.
-     *
-     * @param activity Activity to which's content view the Snackbar is bound.
-     * @param message Message to show.
-     */
-    public static void showSnackMessage(Activity activity, String message) {
-        Snackbar.make(activity.findViewById(android.R.id.content), message, Snackbar.LENGTH_LONG).show();
-    }
-
-    // Solution inspired by https://stackoverflow.com/questions/34936590/why-isnt-my-vector-drawable-scaling-as-expected
-    // Copied from https://raw.githubusercontent.com/nextcloud/talk-android/8ec8606bc61878e87e3ac8ad32c8b72d4680013c/app/src/main/java/com/nextcloud/talk/utils/DisplayUtils.java
-    // under GPL3
-    public static void useCompatVectorIfNeeded() {
-        if (Build.VERSION.SDK_INT < 23) {
-            try {
-                @SuppressLint("RestrictedApi") AppCompatDrawableManager drawableManager = AppCompatDrawableManager.get();
-                Class<?> inflateDelegateClass = Class.forName("android.support.v7.widget.AppCompatDrawableManager$InflateDelegate");
-                Class<?> vdcInflateDelegateClass = Class.forName("android.support.v7.widget.AppCompatDrawableManager$VdcInflateDelegate");
-
-                Constructor<?> constructor = vdcInflateDelegateClass.getDeclaredConstructor();
-                constructor.setAccessible(true);
-                Object vdcInflateDelegate = constructor.newInstance();
-
-                Class<?> args[] = {String.class, inflateDelegateClass};
-                Method addDelegate = AppCompatDrawableManager.class.getDeclaredMethod("addDelegate", args);
-                addDelegate.setAccessible(true);
-                addDelegate.invoke(drawableManager, "vector", vdcInflateDelegate);
-            } catch (Exception e) {
-                Log.e(TAG, "Failed to use reflection to enable proper vector scaling");
-            }
-        }
-    }
-
-}
+/*
+ * Nextcloud Android client application
+ *
+ * @author Andy Scherzinger
+ * @author Bartek Przybylski
+ * @author David A. Velasco
+ * Copyright (C) 2011  Bartek Przybylski
+ * Copyright (C) 2015 ownCloud Inc.
+ * Copyright (C) 2016 Andy Scherzinger
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public
+ * License along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.owncloud.android.utils;
+
+import android.accounts.Account;
+import android.accounts.AccountManager;
+import android.annotation.SuppressLint;
+import android.annotation.TargetApi;
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.content.res.Resources;
+import android.graphics.Bitmap;
+import android.graphics.Color;
+import android.graphics.Point;
+import android.graphics.drawable.Drawable;
+import android.graphics.drawable.PictureDrawable;
+import android.net.Uri;
+import android.os.Build;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.support.annotation.StringRes;
+import android.support.design.widget.BottomNavigationView;
+import android.support.design.widget.Snackbar;
+import android.support.v7.widget.AppCompatDrawableManager;
+import android.text.Spannable;
+import android.text.SpannableStringBuilder;
+import android.text.TextUtils;
+import android.text.format.DateUtils;
+import android.text.style.StyleSpan;
+import android.util.Log;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.View;
+
+import com.bumptech.glide.GenericRequestBuilder;
+import com.bumptech.glide.Glide;
+import com.bumptech.glide.load.engine.DiskCacheStrategy;
+import com.bumptech.glide.load.model.StreamEncoder;
+import com.bumptech.glide.load.resource.file.FileToStreamDecoder;
+import com.bumptech.glide.request.target.SimpleTarget;
+import com.bumptech.glide.request.target.Target;
+import com.caverock.androidsvg.SVG;
+import com.owncloud.android.MainApp;
+import com.owncloud.android.R;
+import com.owncloud.android.authentication.AccountUtils;
+import com.owncloud.android.datamodel.ArbitraryDataProvider;
+import com.owncloud.android.datamodel.FileDataStorageManager;
+import com.owncloud.android.datamodel.OCFile;
+import com.owncloud.android.datamodel.ThumbnailsCacheManager;
+import com.owncloud.android.lib.common.OwnCloudAccount;
+import com.owncloud.android.lib.common.utils.Log_OC;
+import com.owncloud.android.lib.resources.files.SearchOperation;
+import com.owncloud.android.ui.TextDrawable;
+import com.owncloud.android.ui.activity.FileDisplayActivity;
+import com.owncloud.android.ui.events.MenuItemClickEvent;
+import com.owncloud.android.ui.events.SearchEvent;
+import com.owncloud.android.ui.fragment.OCFileListFragment;
+import com.owncloud.android.utils.svg.SvgDecoder;
+import com.owncloud.android.utils.svg.SvgDrawableTranscoder;
+
+import org.greenrobot.eventbus.EventBus;
+import org.parceler.Parcels;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Method;
+import java.math.BigDecimal;
+import java.net.IDN;
+import java.text.DateFormat;
+import java.util.Collection;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Locale;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * A helper class for UI/display related operations.
+ */
+public class DisplayUtils {
+    private static final String TAG = DisplayUtils.class.getSimpleName();
+
+    private static final String[] sizeSuffixes = {"B", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"};
+    private static final int[] sizeScales = {0, 0, 1, 1, 1, 2, 2, 2, 2};
+    private static final int RELATIVE_THRESHOLD_WARNING = 90;
+    private static final int RELATIVE_THRESHOLD_CRITICAL = 95;
+    private static final String MIME_TYPE_UNKNOWN = "Unknown type";
+
+    private static final String HTTP_PROTOCOLL = "http://";
+    private static final String HTTPS_PROTOCOLL = "https://";
+    private static final String TWITTER_HANDLE_PREFIX = "@";
+
+    private static Map<String, String> mimeType2HumanReadable;
+
+    static {
+        mimeType2HumanReadable = new HashMap<>();
+        // images
+        mimeType2HumanReadable.put("image/jpeg", "JPEG image");
+        mimeType2HumanReadable.put("image/jpg", "JPEG image");
+        mimeType2HumanReadable.put("image/png", "PNG image");
+        mimeType2HumanReadable.put("image/bmp", "Bitmap image");
+        mimeType2HumanReadable.put("image/gif", "GIF image");
+        mimeType2HumanReadable.put("image/svg+xml", "JPEG image");
+        mimeType2HumanReadable.put("image/tiff", "TIFF image");
+        // music
+        mimeType2HumanReadable.put("audio/mpeg", "MP3 music file");
+        mimeType2HumanReadable.put("application/ogg", "OGG music file");
+    }
+
+    /**
+     * Converts the file size in bytes to human readable output.
+     * <ul>
+     *     <li>appends a size suffix, e.g. B, KB, MB etc.</li>
+     *     <li>rounds the size based on the suffix to 0,1 or 2 decimals</li>
+     * </ul>
+     *
+     * @param bytes Input file size
+     * @return something readable like "12 MB", {@link com.owncloud.android.R.string#common_pending} for negative
+     * byte values
+     */
+    public static String bytesToHumanReadable(long bytes) {
+        if (bytes < 0) {
+            return MainApp.getAppContext().getString(R.string.common_pending);
+        } else {
+            double result = bytes;
+            int suffixIndex = 0;
+            while (result > 1024 && suffixIndex < sizeSuffixes.length) {
+                result /= 1024.;
+                suffixIndex++;
+            }
+
+            return new BigDecimal(String.valueOf(result)).setScale(
+                    sizeScales[suffixIndex], BigDecimal.ROUND_HALF_UP) + " " + sizeSuffixes[suffixIndex];
+        }
+    }
+
+    /**
+     * Converts MIME types like "image/jpg" to more end user friendly output
+     * like "JPG image".
+     *
+     * @param mimetype MIME type to convert
+     * @return A human friendly version of the MIME type, {@link #MIME_TYPE_UNKNOWN} if it can't be converted
+     */
+    public static String convertMIMEtoPrettyPrint(String mimetype) {
+        if (mimeType2HumanReadable.containsKey(mimetype)) {
+            return mimeType2HumanReadable.get(mimetype);
+        }
+        if (mimetype.split("/").length >= 2) {
+            return mimetype.split("/")[1].toUpperCase(Locale.getDefault()) + " file";
+        }
+        return MIME_TYPE_UNKNOWN;
+    }
+
+    /**
+     * Converts Unix time to human readable format
+     *
+     * @param milliseconds that have passed since 01/01/1970
+     * @return The human readable time for the users locale
+     */
+    public static String unixTimeToHumanReadable(long milliseconds) {
+        Date date = new Date(milliseconds);
+        DateFormat df = DateFormat.getDateTimeInstance();
+        return df.format(date);
+    }
+
+    /**
+     * beautifies a given URL by removing any http/https protocol prefix.
+     *
+     * @param url to be beautified url
+     * @return beautified url
+     */
+    public static String beautifyURL(@Nullable String url) {
+        if (TextUtils.isEmpty(url)) {
+            return "";
+        }
+
+        if (url.length() >= 7 && url.substring(0, 7).equalsIgnoreCase(HTTP_PROTOCOLL)) {
+            return url.substring(HTTP_PROTOCOLL.length()).trim();
+        }
+
+        if (url.length() >= 8 && url.substring(0, 8).equalsIgnoreCase(HTTPS_PROTOCOLL)) {
+            return url.substring(HTTPS_PROTOCOLL.length()).trim();
+        }
+
+        return url.trim();
+    }
+
+    /**
+     * beautifies a given twitter handle by prefixing it with an @ in case it is missing.
+     *
+     * @param handle to be beautified twitter handle
+     * @return beautified twitter handle
+     */
+    public static String beautifyTwitterHandle(@Nullable String handle) {
+        if (handle != null) {
+            String trimmedHandle = handle.trim();
+
+            if (TextUtils.isEmpty(trimmedHandle)) {
+                return "";
+            }
+
+            if (trimmedHandle.startsWith(TWITTER_HANDLE_PREFIX)) {
+                return trimmedHandle;
+            } else {
+                return TWITTER_HANDLE_PREFIX + trimmedHandle;
+            }
+        } else {
+            return "";
+        }
+    }
+
+    /**
+     * Converts an internationalized domain name (IDN) in an URL to and from ASCII/Unicode.
+     *
+     * @param url the URL where the domain name should be converted
+     * @param toASCII if true converts from Unicode to ASCII, if false converts from ASCII to Unicode
+     * @return the URL containing the converted domain name
+     */
+    @TargetApi(Build.VERSION_CODES.GINGERBREAD)
+    public static String convertIdn(String url, boolean toASCII) {
+
+        String urlNoDots = url;
+        String dots = "";
+        while (urlNoDots.startsWith(".")) {
+            urlNoDots = url.substring(1);
+            dots = dots + ".";
+        }
+
+        // Find host name after '//' or '@'
+        int hostStart = 0;
+        if (urlNoDots.contains("//")) {
+            hostStart = url.indexOf("//") + "//".length();
+        } else if (url.contains("@")) {
+            hostStart = url.indexOf('@') + "@".length();
+        }
+
+        int hostEnd = url.substring(hostStart).indexOf("/");
+        // Handle URL which doesn't have a path (path is implicitly '/')
+        hostEnd = (hostEnd == -1 ? urlNoDots.length() : hostStart + hostEnd);
+
+        String host = urlNoDots.substring(hostStart, hostEnd);
+        host = (toASCII ? IDN.toASCII(host) : IDN.toUnicode(host));
+
+        return dots + urlNoDots.substring(0, hostStart) + host + urlNoDots.substring(hostEnd);
+    }
+
+    /**
+     * creates the display string for an account.
+     *
+     * @param context the actual activity
+     * @param savedAccount the actual, saved account
+     * @param accountName the account name
+     * @param fallbackString String to be used in case of an error
+     * @return the display string for the given account data
+     */
+    public static String getAccountNameDisplayText(Context context, Account savedAccount, String accountName, String
+            fallbackString) {
+        try {
+            return new OwnCloudAccount(savedAccount, context).getDisplayName()
+                    + "@"
+                    + convertIdn(accountName.substring(accountName.lastIndexOf('@') + 1), false);
+        } catch (Exception e) {
+            Log_OC.w(TAG, "Couldn't get display name for account, using old style");
+            return fallbackString;
+        }
+    }
+
+    /**
+     * converts an array of accounts into a set of account names.
+     *
+     * @param accountList the account array
+     * @return set of account names
+     */
+    public static Set<String> toAccountNameSet(Collection<Account> accountList) {
+        Set<String> actualAccounts = new HashSet<>(accountList.size());
+        for (Account account : accountList) {
+            actualAccounts.add(account.name);
+        }
+        return actualAccounts;
+    }
+
+    /**
+     * calculates the relative time string based on the given modification timestamp.
+     *
+     * @param context the app's context
+     * @param modificationTimestamp the UNIX timestamp of the file modification time.
+     * @return a relative time string
+     */
+    public static CharSequence getRelativeTimestamp(Context context, long modificationTimestamp) {
+        return getRelativeDateTimeString(context, modificationTimestamp, DateUtils.SECOND_IN_MILLIS,
+                DateUtils.WEEK_IN_MILLIS, 0);
+    }
+
+
+    /**
+     * determines the info level color based on certain thresholds
+     * {@link #RELATIVE_THRESHOLD_WARNING} and {@link #RELATIVE_THRESHOLD_CRITICAL}.
+     *
+     * @param context  the app's context
+     * @param relative relative value for which the info level color should be looked up
+     * @return info level color
+     */
+    public static int getRelativeInfoColor(Context context, int relative) {
+        if (relative < RELATIVE_THRESHOLD_WARNING) {
+            if (ThemeUtils.colorToHexString(ThemeUtils.primaryColor(context)).equalsIgnoreCase(
+                    ThemeUtils.colorToHexString(context.getResources().getColor(R.color.primary)))) {
+                return context.getResources().getColor(R.color.infolevel_info);
+            } else {
+                return Color.GRAY;
+            }
+        } else if (relative >= RELATIVE_THRESHOLD_WARNING && relative < RELATIVE_THRESHOLD_CRITICAL) {
+            return context.getResources().getColor(R.color.infolevel_warning);
+        } else {
+            return context.getResources().getColor(R.color.infolevel_critical);
+        }
+    }
+
+    public static CharSequence getRelativeDateTimeString(Context c, long time, long minResolution,
+                                                         long transitionResolution, int flags) {
+
+        CharSequence dateString = "";
+
+        // in Future
+        if (time > System.currentTimeMillis()) {
+            return DisplayUtils.unixTimeToHumanReadable(time);
+        }
+        // < 60 seconds -> seconds ago
+        else if ((System.currentTimeMillis() - time) < 60 * 1000 && minResolution == DateUtils.SECOND_IN_MILLIS) {
+            return c.getString(R.string.file_list_seconds_ago);
+        } else {
+            dateString = DateUtils.getRelativeDateTimeString(c, time, minResolution, transitionResolution, flags);
+        }
+
+        String[] parts = dateString.toString().split(",");
+        if (parts.length == 2) {
+            if (parts[1].contains(":") && !parts[0].contains(":")) {
+                return parts[0];
+            } else if (parts[0].contains(":") && !parts[1].contains(":")) {
+                return parts[1];
+            }
+        }
+        // dateString contains unexpected format. fallback: use relative date time string from android api as is.
+        return dateString.toString();
+    }
+
+    /**
+     * Update the passed path removing the last "/" if it is not the root folder.
+     *
+     * @param path the path to be trimmed
+     */
+    public static String getPathWithoutLastSlash(String path) {
+
+        // Remove last slash from path
+        if (path.length() > 1 && path.charAt(path.length() - 1) == OCFile.PATH_SEPARATOR.charAt(0)) {
+            return path.substring(0, path.length() - 1);
+        }
+
+        return path;
+    }
+
+    /**
+     * Gets the screen size in pixels.
+     *
+     * @param caller Activity calling; needed to get access to the {@link android.view.WindowManager}
+     * @return Size in pixels of the screen, or default {@link Point} if caller is null
+     */
+    public static Point getScreenSize(Activity caller) {
+        Point size = new Point();
+        if (caller != null) {
+            caller.getWindowManager().getDefaultDisplay().getSize(size);
+        }
+        return size;
+    }
+
+    /**
+     * styling of given spanText within a given text.
+     *
+     * @param text     the non styled complete text
+     * @param spanText the to be styled text
+     * @param style    the style to be applied
+     */
+    public static SpannableStringBuilder createTextWithSpan(String text, String spanText, StyleSpan style) {
+        if (text == null) {
+            return null;
+        }
+
+        SpannableStringBuilder sb = new SpannableStringBuilder(text);
+        if(spanText == null) {
+            return sb;
+        }
+
+        int start = text.lastIndexOf(spanText);
+
+        if (start < 0) {
+            return sb;
+        }
+
+        int end = start + spanText.length();
+        sb.setSpan(style, start, end, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
+        return sb;
+    }
+
+    public interface AvatarGenerationListener {
+        void avatarGenerated(Drawable avatarDrawable, Object callContext);
+
+        boolean shouldCallGeneratedCallback(String tag, Object callContext);
+    }
+
+    /**
+     * fetches and sets the avatar of the given account in the passed callContext
+     *
+     * @param account        the account to be used to connect to server
+     * @param avatarRadius   the avatar radius
+     * @param resources      reference for density information
+     * @param storageManager reference for caching purposes
+     * @param callContext    which context is called to set the generated avatar
+     */
+    public static void setAvatar(@NonNull Account account, AvatarGenerationListener listener,
+                                 float avatarRadius, Resources resources, FileDataStorageManager storageManager,
+                                 Object callContext, Context context) {
+
+        AccountManager accountManager = AccountManager.get(context);
+        String userId = accountManager.getUserData(account,
+                com.owncloud.android.lib.common.accounts.AccountUtils.Constants.KEY_USER_ID);
+
+        setAvatar(account, userId, listener, avatarRadius, resources, storageManager, callContext, context);
+    }
+
+    /**
+     * fetches and sets the avatar of the given account in the passed callContext
+     *
+     * @param account        the account to be used to connect to server
+     * @param userId         the userId which avatar should be set
+     * @param avatarRadius   the avatar radius
+     * @param resources      reference for density information
+     * @param storageManager reference for caching purposes
+     * @param callContext    which context is called to set the generated avatar
+     */
+    public static void setAvatar(@NonNull Account account, @NonNull String userId, AvatarGenerationListener listener,
+                                 float avatarRadius, Resources resources, FileDataStorageManager storageManager,
+                                 Object callContext, Context context) {
+        if (callContext instanceof View) {
+            ((View) callContext).setContentDescription(account.name);
+        }
+
+        ArbitraryDataProvider arbitraryDataProvider = new ArbitraryDataProvider(context.getContentResolver());
+
+        String serverName = account.name.substring(account.name.lastIndexOf('@') + 1, account.name.length());
+        String eTag = arbitraryDataProvider.getValue(userId + "@" + serverName, ThumbnailsCacheManager.AVATAR);
+        String avatarKey = "a_" + userId + "_" + serverName + "_" + eTag;
+
+        // first show old one
+        Drawable avatar = BitmapUtils.bitmapToCircularBitmapDrawable(resources,
+                ThumbnailsCacheManager.getBitmapFromDiskCache(avatarKey));
+
+        // if no one exists, show colored icon with initial char
+        if (avatar == null) {
+            try {
+                avatar = TextDrawable.createAvatarByUserId(userId, avatarRadius);
+            } catch (Exception e) {
+                Log_OC.e(TAG, "Error calculating RGB value for active account icon.", e);
+                avatar = resources.getDrawable(R.drawable.account_circle_white);
+            }
+        }
+
+        // check for new avatar, eTag is compared, so only new one is downloaded
+        if (ThumbnailsCacheManager.cancelPotentialAvatarWork(userId, callContext)) {
+            final ThumbnailsCacheManager.AvatarGenerationTask task =
+                    new ThumbnailsCacheManager.AvatarGenerationTask(listener, callContext, storageManager,
+                            account, resources, avatarRadius, userId, serverName, context);
+
+            final ThumbnailsCacheManager.AsyncAvatarDrawable asyncDrawable =
+                    new ThumbnailsCacheManager.AsyncAvatarDrawable(resources, avatar, task);
+            listener.avatarGenerated(asyncDrawable, callContext);
+            task.execute(userId);
+        }
+    }
+
+    public static void downloadIcon(Context context, String iconUrl, SimpleTarget imageView, int placeholder,
+                                    int width, int height) {
+        try {
+            if (iconUrl.endsWith(".svg")) {
+                downloadSVGIcon(context, iconUrl, imageView, placeholder, width, height);
+            } else {
+                downloadPNGIcon(context, iconUrl, imageView, placeholder);
+            }
+        } catch (Exception e) {
+            Log_OC.d(TAG, "not setting image as activity is destroyed");
+        }
+    }
+
+    private static void downloadPNGIcon(Context context, String iconUrl, SimpleTarget imageView, int placeholder) {
+        Glide
+                .with(context)
+                .load(iconUrl)
+                .centerCrop()
+                .placeholder(placeholder)
+                .error(placeholder)
+                .crossFade()
+                .into(imageView);
+    }
+
+    private static void downloadSVGIcon(Context context, String iconUrl, SimpleTarget imageView, int placeholder,
+                                        int width, int height) {
+        GenericRequestBuilder<Uri, InputStream, SVG, PictureDrawable> requestBuilder = Glide.with(context)
+                .using(Glide.buildStreamModelLoader(Uri.class, context), InputStream.class)
+                .from(Uri.class)
+                .as(SVG.class)
+                .transcode(new SvgDrawableTranscoder(), PictureDrawable.class)
+                .sourceEncoder(new StreamEncoder())
+                .cacheDecoder(new FileToStreamDecoder<>(new SvgDecoder(height, width)))
+                .decoder(new SvgDecoder(height, width))
+                .placeholder(placeholder)
+                .error(placeholder)
+                .animate(android.R.anim.fade_in);
+
+
+        Uri uri = Uri.parse(iconUrl);
+        requestBuilder
+                .diskCacheStrategy(DiskCacheStrategy.SOURCE)
+                .load(uri)
+                .into(imageView);
+    }
+
+    public static Bitmap downloadImageSynchronous(Context context, String imageUrl) {
+        try {
+            return Glide.with(context)
+                    .load(imageUrl)
+                    .asBitmap()
+                    .diskCacheStrategy(DiskCacheStrategy.NONE)
+                    .skipMemoryCache(true)
+                    .into(Target.SIZE_ORIGINAL, Target.SIZE_ORIGINAL)
+                    .get();
+        } catch (Exception e) {
+            Log_OC.e(TAG, "Could not download image " + imageUrl);
+            return null;
+        }
+    }
+
+    public static void setupBottomBar(BottomNavigationView view, Resources resources, final Activity activity,
+                                      int checkedMenuItem) {
+
+        Menu menu = view.getMenu();
+
+        Account account = AccountUtils.getCurrentOwnCloudAccount(MainApp.getAppContext());
+        boolean searchSupported = AccountUtils.hasSearchSupport(account);
+
+        if (!searchSupported) {
+            menu.removeItem(R.id.nav_bar_favorites);
+            menu.removeItem(R.id.nav_bar_photos);
+        }
+
+        if (resources.getBoolean(R.bool.use_home)) {
+            menu.findItem(R.id.nav_bar_files).setTitle(resources.
+                    getString(R.string.drawer_item_home));
+            menu.findItem(R.id.nav_bar_files).setIcon(R.drawable.ic_home);
+        }
+
+        setBottomBarItem(view, checkedMenuItem);
+
+        view.setOnNavigationItemSelectedListener(
+                new BottomNavigationView.OnNavigationItemSelectedListener() {
+                    @Override
+                    public boolean onNavigationItemSelected(@NonNull MenuItem item) {
+                        switch (item.getItemId()) {
+                            case R.id.nav_bar_files:
+                                EventBus.getDefault().post(new MenuItemClickEvent(item));
+                                if (activity != null) {
+                                    activity.invalidateOptionsMenu();
+                                }
+                                break;
+                            case R.id.nav_bar_favorites:
+                                SearchEvent favoritesEvent = new SearchEvent("",
+                                        SearchOperation.SearchType.FAVORITE_SEARCH,
+                                        SearchEvent.UnsetType.UNSET_DRAWER);
+
+                                switchToSearchFragment(activity, favoritesEvent);
+                                break;
+                            case R.id.nav_bar_photos:
+                                SearchEvent photosEvent = new SearchEvent("image/%",
+                                        SearchOperation.SearchType.CONTENT_TYPE_SEARCH,
+                                        SearchEvent.UnsetType.UNSET_DRAWER);
+
+                                switchToSearchFragment(activity, photosEvent);
+                                break;
+                            case R.id.nav_bar_settings:
+                                EventBus.getDefault().post(new MenuItemClickEvent(item));
+                                break;
+                            default:
+                                break;
+                        }
+                        return true;
+                    }
+                });
+    }
+
+    public static void setBottomBarItem(BottomNavigationView view, int checkedMenuItem) {
+        Menu menu = view.getMenu();
+
+        for (int i = 0; i < menu.size(); i++) {
+            menu.getItem(i).setChecked(false);
+        }
+
+        if (checkedMenuItem != -1) {
+            menu.findItem(checkedMenuItem).setChecked(true);
+        }
+    }
+
+    private static void switchToSearchFragment(Activity activity, SearchEvent event) {
+        if (activity instanceof FileDisplayActivity) {
+            EventBus.getDefault().post(event);
+        } else {
+            Intent recentlyAddedIntent = new Intent(activity.getBaseContext(), FileDisplayActivity.class);
+            recentlyAddedIntent.putExtra(OCFileListFragment.SEARCH_EVENT, Parcels.wrap(event));
+            recentlyAddedIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
+            activity.startActivity(recentlyAddedIntent);
+        }
+    }
+
+
+    /**
+     * Get String data from a InputStream
+     *
+     * @param inputStream        The File InputStream
+     */
+    public static String getData(InputStream inputStream) {
+
+        BufferedReader buffreader = new BufferedReader(new InputStreamReader(inputStream));
+        String line;
+        StringBuilder text = new StringBuilder();
+        try {
+            while ((line = buffreader.readLine()) != null) {
+                text.append(line);
+                text.append('\n');
+            }
+        } catch (IOException e) {
+            Log_OC.e(TAG, e.getMessage());
+        }
+        return text.toString();
+    }
+
+    /**
+     * Show a temporary message in a {@link Snackbar} bound to the content view.
+     *
+     * @param activity        The {@link Activity} to which's content view the {@link Snackbar} is bound.
+     * @param messageResource The resource id of the string resource to use. Can be formatted text.
+     */
+    public static void showSnackMessage(Activity activity, @StringRes int messageResource) {
+        showSnackMessage(activity.findViewById(android.R.id.content), messageResource);
+    }
+
+    /**
+     * Show a temporary message in a {@link Snackbar} bound to the content view.
+     *
+     * @param activity The {@link Activity} to which's content view the {@link Snackbar} is bound.
+     * @param message  Message to show.
+     */
+    public static void showSnackMessage(Activity activity, String message) {
+        Snackbar.make(activity.findViewById(android.R.id.content), message, Snackbar.LENGTH_LONG).show();
+    }
+
+    /**
+     * Show a temporary message in a {@link Snackbar} bound to the given view.
+     *
+     * @param view            The view the {@link Snackbar} is bound to.
+     * @param messageResource The resource id of the string resource to use. Can be formatted text.
+     */
+    public static void showSnackMessage(View view, @StringRes int messageResource) {
+        Snackbar.make(view, messageResource, Snackbar.LENGTH_LONG).show();
+    }
+
+    /**
+     * create a temporary message in a {@link Snackbar} bound to the given view.
+     *
+     * @param view            The view the {@link Snackbar} is bound to.
+     * @param messageResource The resource id of the string resource to use. Can be formatted text.
+     */
+    public static Snackbar createSnackbar(View view, @StringRes int messageResource, int length) {
+        return Snackbar.make(view, messageResource, length);
+    }
+
+    /**
+     * Show a temporary message in a {@link Snackbar} bound to the content view.
+     *
+     * @param activity        The {@link Activity} to which's content view the {@link Snackbar} is bound.
+     * @param messageResource The resource id of the string resource to use. Can be formatted text.
+     * @param formatArgs      The format arguments that will be used for substitution.
+     */
+    public static void showSnackMessage(Activity activity, @StringRes int messageResource, Object... formatArgs) {
+        showSnackMessage(activity, activity.findViewById(android.R.id.content), messageResource, formatArgs);
+    }
+
+    /**
+     * Show a temporary message in a {@link Snackbar} bound to the content view.
+     *
+     * @param context         to load resources.
+     * @param view            The content view the {@link Snackbar} is bound to.
+     * @param messageResource The resource id of the string resource to use. Can be formatted text.
+     * @param formatArgs      The format arguments that will be used for substitution.
+     */
+    public static void showSnackMessage(Context context, View view, @StringRes int messageResource, Object... formatArgs) {
+        Snackbar.make(
+                view,
+                String.format(context.getString(messageResource, formatArgs)),
+                Snackbar.LENGTH_LONG)
+                .show();
+    }
+
+    // Solution inspired by https://stackoverflow.com/questions/34936590/why-isnt-my-vector-drawable-scaling-as-expected
+    // Copied from https://raw.githubusercontent.com/nextcloud/talk-android/8ec8606bc61878e87e3ac8ad32c8b72d4680013c/app/src/main/java/com/nextcloud/talk/utils/DisplayUtils.java
+    // under GPL3
+    public static void useCompatVectorIfNeeded() {
+        if (Build.VERSION.SDK_INT < 23) {
+            try {
+                @SuppressLint("RestrictedApi") AppCompatDrawableManager drawableManager = AppCompatDrawableManager.get();
+                Class<?> inflateDelegateClass = Class.forName("android.support.v7.widget.AppCompatDrawableManager$InflateDelegate");
+                Class<?> vdcInflateDelegateClass = Class.forName("android.support.v7.widget.AppCompatDrawableManager$VdcInflateDelegate");
+
+                Constructor<?> constructor = vdcInflateDelegateClass.getDeclaredConstructor();
+                constructor.setAccessible(true);
+                Object vdcInflateDelegate = constructor.newInstance();
+
+                Class<?> args[] = {String.class, inflateDelegateClass};
+                Method addDelegate = AppCompatDrawableManager.class.getDeclaredMethod("addDelegate", args);
+                addDelegate.setAccessible(true);
+                addDelegate.invoke(drawableManager, "vector", vdcInflateDelegate);
+            } catch (Exception e) {
+                Log.e(TAG, "Failed to use reflection to enable proper vector scaling");
+            }
+        }
+    }
+
+}