1 /*
   2  * Copyright (c) 2012, 2016, 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
  23  * questions.
  24  */
  25 
  26 package com.sun.javafx.stage;
  27 
  28 import com.sun.javafx.util.Utils;
  29 import javafx.stage.Stage;
  30 import javafx.stage.Window;
  31 
  32 /**
  33  * Utility class class used for accessing certain implementation-specific
  34  * runtime functionality.
  35  */
  36 public class StageHelper extends WindowHelper {
  37 
  38     private static final StageHelper theInstance;
  39     private static StageAccessor stageAccessor;
  40 
  41     static {
  42         theInstance = new StageHelper();
  43         Utils.forceInit(Stage.class);
  44     }
  45 
  46     private static WindowHelper getInstance() {
  47         return theInstance;
  48     }
  49 
  50     public static void initHelper(Stage stage) {
  51         setHelper(stage, getInstance());
  52     }
  53 
  54     @Override
  55     protected void visibleChangingImpl(Window window, boolean visible) {
  56         super.visibleChangingImpl(window, visible);
  57         stageAccessor.doVisibleChanging(window, visible);
  58     }
  59 
  60     @Override
  61     protected void visibleChangedImpl(Window window, boolean visible) {
  62         super.visibleChangedImpl(window, visible);
  63         stageAccessor.doVisibleChanged(window, visible);
  64     }
  65 
  66     public static void initSecurityDialog(Stage stage, boolean securityDialog) {
  67         stageAccessor.initSecurityDialog(stage, securityDialog);
  68     }
  69 
  70     public static void setPrimary(Stage stage, boolean primary) {
  71         stageAccessor.setPrimary(stage, primary);
  72     }
  73 
  74     public static void setImportant(Stage stage, boolean important) {
  75         stageAccessor.setImportant(stage, important);
  76     }
  77 
  78     public static void setStageAccessor(StageAccessor a) {
  79         if (stageAccessor != null) {
  80             System.out.println("Warning: Stage accessor already set: " + stageAccessor);
  81             Thread.dumpStack();
  82         }
  83         stageAccessor = a;
  84     }
  85 
  86     public static StageAccessor getStageAccessor() {
  87         return stageAccessor;
  88     }
  89 
  90     public static interface StageAccessor {
  91         void doVisibleChanging(Window window, boolean visible);
  92         void doVisibleChanged(Window window, boolean visible);
  93         public void initSecurityDialog(Stage stage, boolean securityDialog);
  94         public void setPrimary(Stage stage,  boolean primary);
  95         public void setImportant(Stage stage,  boolean important);
  96     }
  97 }