1 /*
   2  * Copyright (c) 1998, 2013, 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

 100     /**
 101      * Unregisters the specified component.
 102      */
 103     synchronized static void unregister(JComponent c) {
 104         for (int counter = components.size() - 1; counter >= 0; counter--) {
 105             // Search for the component, removing any flushed references
 106             // along the way.
 107             JComponent target = components.get(counter).get();
 108 
 109             if (target == c || target == null) {
 110                 components.remove(counter);
 111             }
 112         }
 113     }
 114 
 115     /**
 116      * Finds a previously registered component of class <code>target</code>
 117      * that shares the JRootPane ancestor of <code>from</code>.
 118      */
 119     synchronized static Object findRegisteredComponentOfType(JComponent from,
 120                                                              Class target) {
 121         JRootPane rp = SwingUtilities.getRootPane(from);
 122         if (rp != null) {
 123             for (int counter = components.size() - 1; counter >= 0; counter--){
 124                 Object component = ((WeakReference)components.get(counter)).
 125                                    get();
 126 
 127                 if (component == null) {
 128                     // WeakReference has gone away, remove the WeakReference
 129                     components.remove(counter);
 130                 }
 131                 else if (target.isInstance(component) && SwingUtilities.
 132                          getRootPane((Component)component) == rp) {
 133                     return component;
 134                 }
 135             }
 136         }
 137         return null;
 138     }
 139 
 140     /**

   1 /*
   2  * Copyright (c) 1998, 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

 100     /**
 101      * Unregisters the specified component.
 102      */
 103     synchronized static void unregister(JComponent c) {
 104         for (int counter = components.size() - 1; counter >= 0; counter--) {
 105             // Search for the component, removing any flushed references
 106             // along the way.
 107             JComponent target = components.get(counter).get();
 108 
 109             if (target == c || target == null) {
 110                 components.remove(counter);
 111             }
 112         }
 113     }
 114 
 115     /**
 116      * Finds a previously registered component of class <code>target</code>
 117      * that shares the JRootPane ancestor of <code>from</code>.
 118      */
 119     synchronized static Object findRegisteredComponentOfType(JComponent from,
 120                                                              Class<?> target) {
 121         JRootPane rp = SwingUtilities.getRootPane(from);
 122         if (rp != null) {
 123             for (int counter = components.size() - 1; counter >= 0; counter--){
 124                 Object component = ((WeakReference)components.get(counter)).
 125                                    get();
 126 
 127                 if (component == null) {
 128                     // WeakReference has gone away, remove the WeakReference
 129                     components.remove(counter);
 130                 }
 131                 else if (target.isInstance(component) && SwingUtilities.
 132                          getRootPane((Component)component) == rp) {
 133                     return component;
 134                 }
 135             }
 136         }
 137         return null;
 138     }
 139 
 140     /**