Java tutorial
/* * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javafx.scene.control; import javafx.scene.Node; /** * Base class for defining the visual representation of user interface controls * by defining a scene graph of nodes to represent the skin. * A user interface control is abstracted behind the {@link Skinnable} interface. * * @param <C> A subtype of Skinnable that the Skin represents. This allows for * Skin implementation to access the {@link Skinnable} implementation, * which is usually a {@link Control} implementation. * @since JavaFX 2.0 */ public interface Skin<C extends Skinnable> { /** * Gets the Skinnable to which this Skin is assigned. A Skin must be created * for one and only one Skinnable. This value will only ever go from a * non-null to null value when the Skin is removed from the Skinnable, and * only as a consequence of a call to {@link #dispose()}. * <p> * The caller who constructs a Skinnable must also construct a Skin and * properly establish the relationship between the Control and its Skin. * * @return A non-null Skinnable, or null value if disposed. */ public C getSkinnable(); /** * Gets the Node which represents this Skin. This must never be null, except * after a call to {@link #dispose()}, and must never change except when * changing to null. * * @return A non-null Node, except when the Skin has been disposed. */ public Node getNode(); /** * Called by a Skinnable when the Skin is replaced on the Skinnable. This method * allows a Skin to implement any logic necessary to clean up itself after * the Skin is no longer needed. It may be used to release native resources. * The methods {@link #getSkinnable()} and {@link #getNode()} * should return null following a call to dispose. Calling dispose twice * has no effect. */ public void dispose(); }