1 /*
2 * Copyright (c) 2000, 2008, 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
30 import java.util.Comparator;
31 import java.io.*;
32 import sun.awt.SunToolkit;
33
34
35 /**
36 * A SortingFocusTraversalPolicy which sorts Components based on their size,
37 * position, and orientation. Based on their size and position, Components are
38 * roughly categorized into rows and columns. For a Container with horizontal
39 * orientation, columns run left-to-right or right-to-left, and rows run top-
40 * to-bottom. For a Container with vertical orientation, columns run top-to-
41 * bottom and rows run left-to-right or right-to-left. See
42 * <code>ComponentOrientation</code> for more information. All columns in a
43 * row are fully traversed before proceeding to the next row.
44 *
45 * @author David Mendenhall
46 *
47 * @see java.awt.ComponentOrientation
48 * @since 1.4
49 */
50 public class LayoutFocusTraversalPolicy extends SortingFocusTraversalPolicy
51 implements Serializable
52 {
53 // Delegate most of our fitness test to Default so that we only have to
54 // code the algorithm once.
55 private static final SwingDefaultFocusTraversalPolicy fitnessTestPolicy =
56 new SwingDefaultFocusTraversalPolicy();
57
58 /**
59 * Constructs a LayoutFocusTraversalPolicy.
60 */
61 public LayoutFocusTraversalPolicy() {
62 super(new LayoutComparator());
63 }
64
65 /**
66 * Constructs a LayoutFocusTraversalPolicy with the passed in
67 * <code>Comparator</code>.
68 */
69 LayoutFocusTraversalPolicy(Comparator<? super Component> c) {
248 // case where the developer has overriden isFocusTraversable to
249 // return true.
250 }
251 return fitnessTestPolicy.accept(aComponent);
252 }
253
254 private void writeObject(ObjectOutputStream out) throws IOException {
255 out.writeObject(getComparator());
256 out.writeBoolean(getImplicitDownCycleTraversal());
257 }
258 private void readObject(ObjectInputStream in)
259 throws IOException, ClassNotFoundException
260 {
261 setComparator((Comparator)in.readObject());
262 setImplicitDownCycleTraversal(in.readBoolean());
263 }
264 }
265
266 // Create our own subclass and change accept to public so that we can call
267 // accept.
268 class SwingDefaultFocusTraversalPolicy
269 extends java.awt.DefaultFocusTraversalPolicy
270 {
271 public boolean accept(Component aComponent) {
272 return super.accept(aComponent);
273 }
274 }
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1 /*
2 * Copyright (c) 2000, 2014, 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
30 import java.util.Comparator;
31 import java.io.*;
32 import sun.awt.SunToolkit;
33
34
35 /**
36 * A SortingFocusTraversalPolicy which sorts Components based on their size,
37 * position, and orientation. Based on their size and position, Components are
38 * roughly categorized into rows and columns. For a Container with horizontal
39 * orientation, columns run left-to-right or right-to-left, and rows run top-
40 * to-bottom. For a Container with vertical orientation, columns run top-to-
41 * bottom and rows run left-to-right or right-to-left. See
42 * <code>ComponentOrientation</code> for more information. All columns in a
43 * row are fully traversed before proceeding to the next row.
44 *
45 * @author David Mendenhall
46 *
47 * @see java.awt.ComponentOrientation
48 * @since 1.4
49 */
50 @SuppressWarnings("serial") // Parts of superclass are not serializable across versions
51 public class LayoutFocusTraversalPolicy extends SortingFocusTraversalPolicy
52 implements Serializable
53 {
54 // Delegate most of our fitness test to Default so that we only have to
55 // code the algorithm once.
56 private static final SwingDefaultFocusTraversalPolicy fitnessTestPolicy =
57 new SwingDefaultFocusTraversalPolicy();
58
59 /**
60 * Constructs a LayoutFocusTraversalPolicy.
61 */
62 public LayoutFocusTraversalPolicy() {
63 super(new LayoutComparator());
64 }
65
66 /**
67 * Constructs a LayoutFocusTraversalPolicy with the passed in
68 * <code>Comparator</code>.
69 */
70 LayoutFocusTraversalPolicy(Comparator<? super Component> c) {
249 // case where the developer has overriden isFocusTraversable to
250 // return true.
251 }
252 return fitnessTestPolicy.accept(aComponent);
253 }
254
255 private void writeObject(ObjectOutputStream out) throws IOException {
256 out.writeObject(getComparator());
257 out.writeBoolean(getImplicitDownCycleTraversal());
258 }
259 private void readObject(ObjectInputStream in)
260 throws IOException, ClassNotFoundException
261 {
262 setComparator((Comparator)in.readObject());
263 setImplicitDownCycleTraversal(in.readBoolean());
264 }
265 }
266
267 // Create our own subclass and change accept to public so that we can call
268 // accept.
269 @SuppressWarnings("serial") // JDK-implementation class
270 class SwingDefaultFocusTraversalPolicy
271 extends java.awt.DefaultFocusTraversalPolicy
272 {
273 public boolean accept(Component aComponent) {
274 return super.accept(aComponent);
275 }
276 }
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