1 /*
   2  * Copyright (c) 2014, Oracle and/or its affiliates.
   3  * All rights reserved. Use is subject to license terms.
   4  *
   5  * This file is available and licensed under the following license:
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  *  - Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  *  - Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the distribution.
  16  *  - Neither the name of Oracle Corporation nor the names of its
  17  *    contributors may be used to endorse or promote products derived
  18  *    from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32 package com.oracle.javafx.scenebuilder.kit.editor.job.atomic;
  33 
  34 import com.oracle.javafx.scenebuilder.kit.editor.EditorController;
  35 import com.oracle.javafx.scenebuilder.kit.editor.job.Job;
  36 import com.oracle.javafx.scenebuilder.kit.fxom.FXOMDocument;
  37 import com.oracle.javafx.scenebuilder.kit.fxom.FXOMObject;
  38 
  39 /**
  40  */
  41 public class SetFxomRootJob extends Job {
  42 
  43     private final FXOMObject newRoot;
  44     private FXOMObject oldRoot;
  45 
  46     public SetFxomRootJob(FXOMObject newRoot, EditorController editorController) {
  47         super(editorController);
  48 
  49         assert editorController.getFxomDocument() != null;
  50         assert (newRoot == null) || (newRoot.getFxomDocument() == editorController.getFxomDocument());
  51 
  52         this.newRoot = newRoot;
  53     }
  54 
  55     /*
  56      * Job
  57      */
  58     @Override
  59     public boolean isExecutable() {
  60         return newRoot != getEditorController().getFxomDocument().getFxomRoot();
  61     }
  62 
  63     @Override
  64     public void execute() {
  65         assert oldRoot == null;
  66 
  67         // Saves the current root
  68         final FXOMDocument fxomDocument = getEditorController().getFxomDocument();
  69         oldRoot = fxomDocument.getFxomRoot();
  70 
  71         fxomDocument.beginUpdate();
  72         fxomDocument.setFxomRoot(newRoot);
  73         fxomDocument.endUpdate();
  74     }
  75 
  76     @Override
  77     public void undo() {
  78         final FXOMDocument fxomDocument = getEditorController().getFxomDocument();
  79         assert fxomDocument.getFxomRoot() == newRoot;
  80 
  81         fxomDocument.beginUpdate();
  82         fxomDocument.setFxomRoot(oldRoot);
  83         fxomDocument.endUpdate();
  84 
  85         assert fxomDocument.getFxomRoot() == oldRoot;
  86     }
  87 
  88     @Override
  89     public void redo() {
  90         final FXOMDocument fxomDocument = getEditorController().getFxomDocument();
  91         assert fxomDocument.getFxomRoot() == oldRoot;
  92 
  93         fxomDocument.beginUpdate();
  94         fxomDocument.setFxomRoot(newRoot);
  95         fxomDocument.endUpdate();
  96 
  97         assert fxomDocument.getFxomRoot() == newRoot;
  98     }
  99 
 100     @Override
 101     public String getDescription() {
 102         // Not expected to reach the user
 103         return getClass().getSimpleName();
 104     }
 105 }