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1   /*
2    * *************************************************************************************************************************************************************
3    *
4    * SteelBlue: DCI User Interfaces
5    * http://tidalwave.it/projects/steelblue
6    *
7    * Copyright (C) 2015 - 2024 by Tidalwave s.a.s. (http://tidalwave.it)
8    *
9    * *************************************************************************************************************************************************************
10   *
11   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
12   * You may obtain a copy of the License at
13   *
14   *     http://www.apache.org/licenses/LICENSE-2.0
15   *
16   * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
17   * CONDITIONS OF ANY KIND, either express or implied.  See the License for the specific language governing permissions and limitations under the License.
18   *
19   * *************************************************************************************************************************************************************
20   *
21   * git clone https://bitbucket.org/tidalwave/steelblue-src
22   * git clone https://github.com/tidalwave-it/steelblue-src
23   *
24   * *************************************************************************************************************************************************************
25   */
26  package it.tidalwave.role.ui.javafx.impl.common;
27  
28  import javax.annotation.Nonnull;
29  import java.util.concurrent.Callable;
30  import java.util.concurrent.Executor;
31  import javafx.scene.effect.BoxBlur;
32  import javafx.stage.Window;
33  import javafx.application.Platform;
34  import lombok.RequiredArgsConstructor;
35  import lombok.Setter;
36  
37  /***************************************************************************************************************************************************************
38   *
39   * @author  Fabrizio Giudici
40   *
41   **************************************************************************************************************************************************************/
42  @RequiredArgsConstructor
43  public abstract class DelegateSupport
44    {
45      @Nonnull
46      protected final Executor executor;
47  
48      @Setter
49      protected Window mainWindow;
50  
51      /***********************************************************************************************************************************************************
52       * Runs the given (@link Callable} while disabling the given {@link Window}.
53       *
54       * @param  window    the {@code Window} to disable
55       * @param  callable  the (@code Callable} to run
56       * @return           the (@code Callable} result
57       **********************************************************************************************************************************************************/
58      protected <T> T runWhileDisabling (@Nonnull final Window window, @Nonnull final Callable<T> callable)
59        {
60          final var root = window.getScene().getRoot();
61          final var effect = root.getEffect();
62          final var disabled = root.isDisable();
63  
64          try
65            {
66              root.setDisable(true);
67              root.setEffect(createDisablingEffect());
68              return callable.call();
69            }
70          catch (Exception e)
71            {
72              throw new RuntimeException(e);
73            }
74          finally
75            {
76              root.setEffect(effect);
77              root.setDisable(disabled);
78            }
79        }
80  
81      /***********************************************************************************************************************************************************
82       * TODO: delegate to a provider
83       **********************************************************************************************************************************************************/
84      @Nonnull
85      private BoxBlur createDisablingEffect()
86        {
87          final var bb = new BoxBlur();
88          bb.setWidth(5);
89          bb.setHeight(5);
90          bb.setIterations(3);
91          return bb;
92        }
93  
94      /***********************************************************************************************************************************************************
95       * TODO: delegate to a provider
96       **********************************************************************************************************************************************************/
97      public static boolean isOSX()
98        {
99          return System.getProperty("os.name").contains("OS X");
100       }
101 
102     /***********************************************************************************************************************************************************
103      *
104      **********************************************************************************************************************************************************/
105     protected void assertIsFxApplicationThread()
106       {
107         if (!Platform.isFxApplicationThread())
108           {
109             throw new AssertionError("Must run in the JavaFX Application Thread");
110           }
111       }
112   }