1/* 2 * Copyright (c) 1996, 2007, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25package java.awt.peer; 26 27import java.awt.Adjustable; 28import java.awt.ScrollPane; 29import java.awt.ScrollPaneAdjustable; 30 31/** 32 * The peer interface for {@link ScrollPane}. 33 * 34 * The peer interfaces are intended only for use in porting 35 * the AWT. They are not intended for use by application 36 * developers, and developers should not implement peers 37 * nor invoke any of the peer methods directly on the peer 38 * instances. 39 */ 40public interface ScrollPanePeer extends ContainerPeer { 41 42 /** 43 * Returns the height of the horizontal scroll bar. 44 * 45 * @return the height of the horizontal scroll bar 46 * 47 * @see ScrollPane#getHScrollbarHeight() 48 */ 49 int getHScrollbarHeight(); 50 51 /** 52 * Returns the width of the vertical scroll bar. 53 * 54 * @return the width of the vertical scroll bar 55 * 56 * @see ScrollPane#getVScrollbarWidth() 57 */ 58 int getVScrollbarWidth(); 59 60 /** 61 * Sets the scroll position of the child. 62 * 63 * @param x the X coordinate of the scroll position 64 * @param y the Y coordinate of the scroll position 65 * 66 * @see ScrollPane#setScrollPosition(int, int) 67 */ 68 void setScrollPosition(int x, int y); 69 70 /** 71 * Called when the child component changes its size. 72 * 73 * @param w the new width of the child component 74 * @param h the new height of the child component 75 * 76 * @see ScrollPane#layout() 77 */ 78 void childResized(int w, int h); 79 80 /** 81 * Sets the unit increment of one of the scroll pane's adjustables. 82 * 83 * @param adj the scroll pane adjustable object 84 * @param u the unit increment 85 * 86 * @see ScrollPaneAdjustable#setUnitIncrement(int) 87 */ 88 void setUnitIncrement(Adjustable adj, int u); 89 90 /** 91 * Sets the value for one of the scroll pane's adjustables. 92 * 93 * @param adj the scroll pane adjustable object 94 * @param v the value to set 95 */ 96 void setValue(Adjustable adj, int v); 97} 98