src/share/classes/javax/swing/LegacyGlueFocusTraversalPolicy.java

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   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


  25 package javax.swing;
  26 
  27 import java.awt.FocusTraversalPolicy;
  28 import java.awt.Component;
  29 import java.awt.Container;
  30 import java.awt.Window;
  31 import java.util.HashMap;
  32 import java.util.HashSet;
  33 import java.io.*;
  34 
  35 
  36 /**
  37  * A FocusTraversalPolicy which provides support for legacy applications which
  38  * handle focus traversal via JComponent.setNextFocusableComponent or by
  39  * installing a custom DefaultFocusManager. If a specific traversal has not
  40  * been hard coded, then that traversal is provided either by the custom
  41  * DefaultFocusManager, or by a wrapped FocusTraversalPolicy instance.
  42  *
  43  * @author David Mendenhall
  44  */

  45 final class LegacyGlueFocusTraversalPolicy extends FocusTraversalPolicy
  46     implements Serializable
  47 {
  48     private transient FocusTraversalPolicy delegatePolicy;
  49     private transient DefaultFocusManager delegateManager;
  50 
  51     private HashMap<Component, Component> forwardMap = new HashMap<Component, Component>(),
  52         backwardMap = new HashMap<Component, Component>();
  53 
  54     LegacyGlueFocusTraversalPolicy(FocusTraversalPolicy delegatePolicy) {
  55         this.delegatePolicy = delegatePolicy;
  56     }
  57     LegacyGlueFocusTraversalPolicy(DefaultFocusManager delegateManager) {
  58         this.delegateManager = delegateManager;
  59     }
  60 
  61     void setNextFocusableComponent(Component left, Component right) {
  62         forwardMap.put(left, right);
  63         backwardMap.put(right, left);
  64     }


   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


  25 package javax.swing;
  26 
  27 import java.awt.FocusTraversalPolicy;
  28 import java.awt.Component;
  29 import java.awt.Container;
  30 import java.awt.Window;
  31 import java.util.HashMap;
  32 import java.util.HashSet;
  33 import java.io.*;
  34 
  35 
  36 /**
  37  * A FocusTraversalPolicy which provides support for legacy applications which
  38  * handle focus traversal via JComponent.setNextFocusableComponent or by
  39  * installing a custom DefaultFocusManager. If a specific traversal has not
  40  * been hard coded, then that traversal is provided either by the custom
  41  * DefaultFocusManager, or by a wrapped FocusTraversalPolicy instance.
  42  *
  43  * @author David Mendenhall
  44  */
  45 @SuppressWarnings("serial") // JDK-implementation class
  46 final class LegacyGlueFocusTraversalPolicy extends FocusTraversalPolicy
  47     implements Serializable
  48 {
  49     private transient FocusTraversalPolicy delegatePolicy;
  50     private transient DefaultFocusManager delegateManager;
  51 
  52     private HashMap<Component, Component> forwardMap = new HashMap<Component, Component>(),
  53         backwardMap = new HashMap<Component, Component>();
  54 
  55     LegacyGlueFocusTraversalPolicy(FocusTraversalPolicy delegatePolicy) {
  56         this.delegatePolicy = delegatePolicy;
  57     }
  58     LegacyGlueFocusTraversalPolicy(DefaultFocusManager delegateManager) {
  59         this.delegateManager = delegateManager;
  60     }
  61 
  62     void setNextFocusableComponent(Component left, Component right) {
  63         forwardMap.put(left, right);
  64         backwardMap.put(right, left);
  65     }