| /* |
| * Copyright (c) 2011, 2012, 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 apple.laf; |
| |
| public class JRSUIFocus { |
| private static final int SUCCESS = 0; |
| private static final int NULL_PTR = -1; |
| private static final int NULL_CG_REF = -2; |
| |
| // from HITheme.h |
| public static final int RING_ONLY = 0; |
| public static final int RING_ABOVE = 1; |
| public static final int RING_BELOW = 2; |
| |
| private static native int beginNativeFocus(final long cgContext, final int ringStyle); |
| private static native int endNativeFocus(final long cgContext); |
| |
| final long cgContext; |
| public JRSUIFocus(final long cgContext) { |
| this.cgContext = cgContext; |
| } |
| |
| public void beginFocus(final int ringStyle) { |
| testForFailure(beginNativeFocus(cgContext, ringStyle)); |
| } |
| |
| public void endFocus() { |
| testForFailure(endNativeFocus(cgContext)); |
| } |
| |
| static void testForFailure(final int status) { |
| if (status == SUCCESS) return; |
| |
| switch(status) { |
| case NULL_PTR: throw new RuntimeException("Null pointer exception in native JRSUI"); |
| case NULL_CG_REF: throw new RuntimeException("Null CG reference in native JRSUI"); |
| default: throw new RuntimeException("JRSUI draw focus problem: " + status); |
| } |
| } |
| } |