@@ -0,0 +1,2131 @@
+/*%0A * This file is part of jGui API, licensed under the MIT License (MIT).%0A *%0A * Copyright (c) 2016 johni0702 %3Chttps://github.com/johni0702%3E%0A * Copyright (c) contributors%0A *%0A * Permission is hereby granted, free of charge, to any person obtaining a copy%0A * of this software and associated documentation files (the %22Software%22), to deal%0A * in the Software without restriction, including without limitation the rights%0A * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell%0A * copies of the Software, and to permit persons to whom the Software is%0A * furnished to do so, subject to the following conditions:%0A *%0A * The above copyright notice and this permission notice shall be included in%0A * all copies or substantial portions of the Software.%0A *%0A * THE SOFTWARE IS PROVIDED %22AS IS%22, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR%0A * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,%0A * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE%0A * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER%0A * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,%0A * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN%0A * THE SOFTWARE.%0A */%0Apackage de.johni0702.minecraft.gui.utils;%0A%0Aimport de.johni0702.minecraft.gui.function.Focusable;%0A%0Aimport java.util.Arrays;%0Aimport java.util.HashSet;%0A%0Aimport static com.google.common.base.Preconditions.checkArgument;%0A%0Apublic class Utils %7B%0A    /**%0A     * Link the specified focusable compontents in the order they're supplied.%0A     * @param focusables Focusables to link%0A     * @see Focusable#setNext(Focusable)%0A     * @see Focusable#setPrevious(Focusable)%0A     */%0A    public static void link(Focusable... focusables) %7B%0A        checkArgument(new HashSet%3C%3E(Arrays.asList(focusables)).size() == focusables.length, %22focusables must be unique and not null%22);%0A        for (int i = 0; i %3C focusables.length; i++) %7B%0A            Focusable next = focusables%5B(i + 1) %25 focusables.length%5D;%0A            focusables%5Bi%5D.setNext(next);%0A            next.setPrevious(focusables%5Bi%5D);%0A        %7D%0A    %7D%0A%7D%0A

Add utility method for linking Focusable components of a GUI