< prev index next >

src/java.desktop/share/classes/javax/swing/PopupFactory.java

Print this page


   1 /*
   2  * Copyright (c) 1999, 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


 350         private volatile boolean isCacheEnabled = true;
 351 
 352         /**
 353          * Returns either a new or recycled <code>Popup</code> containing
 354          * the specified children.
 355          */
 356         static Popup getHeavyWeightPopup(Component owner, Component contents,
 357                                          int ownerX, int ownerY) {
 358             Window window = (owner != null) ? SwingUtilities.
 359                               getWindowAncestor(owner) : null;
 360             HeavyWeightPopup popup = null;
 361 
 362             if (window != null) {
 363                 popup = getRecycledHeavyWeightPopup(window);
 364             }
 365 
 366             boolean focusPopup = false;
 367             if(contents != null && contents.isFocusable()) {
 368                 if(contents instanceof JPopupMenu) {
 369                     JPopupMenu jpm = (JPopupMenu) contents;
 370                     Component popComps[] = jpm.getComponents();
 371                     for (Component popComp : popComps) {
 372                         if (!(popComp instanceof MenuElement) &&
 373                                 !(popComp instanceof JSeparator)) {
 374                             focusPopup = true;
 375                             break;
 376                         }
 377                     }
 378                 }
 379             }
 380 
 381             if (popup == null ||
 382                 ((JWindow) popup.getComponent())
 383                  .getFocusableWindowState() != focusPopup) {
 384 
 385                 if(popup != null) {
 386                     // The recycled popup can't serve us well
 387                     // dispose it and create new one
 388                     popup._dispose();
 389                 }
 390 


   1 /*
   2  * Copyright (c) 1999, 2018, 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


 350         private volatile boolean isCacheEnabled = true;
 351 
 352         /**
 353          * Returns either a new or recycled <code>Popup</code> containing
 354          * the specified children.
 355          */
 356         static Popup getHeavyWeightPopup(Component owner, Component contents,
 357                                          int ownerX, int ownerY) {
 358             Window window = (owner != null) ? SwingUtilities.
 359                               getWindowAncestor(owner) : null;
 360             HeavyWeightPopup popup = null;
 361 
 362             if (window != null) {
 363                 popup = getRecycledHeavyWeightPopup(window);
 364             }
 365 
 366             boolean focusPopup = false;
 367             if(contents != null && contents.isFocusable()) {
 368                 if(contents instanceof JPopupMenu) {
 369                     JPopupMenu jpm = (JPopupMenu) contents;
 370                     Component[] popComps = jpm.getComponents();
 371                     for (Component popComp : popComps) {
 372                         if (!(popComp instanceof MenuElement) &&
 373                                 !(popComp instanceof JSeparator)) {
 374                             focusPopup = true;
 375                             break;
 376                         }
 377                     }
 378                 }
 379             }
 380 
 381             if (popup == null ||
 382                 ((JWindow) popup.getComponent())
 383                  .getFocusableWindowState() != focusPopup) {
 384 
 385                 if(popup != null) {
 386                     // The recycled popup can't serve us well
 387                     // dispose it and create new one
 388                     popup._dispose();
 389                 }
 390 


< prev index next >