Mercurial > projects > dwt2
annotate org.eclipse.core.databinding.observable/src/org/eclipse/core/internal/databinding/observable/tree/TreeDiffNode.d @ 96:b74ac5dfcc06
package to module and java.lang.all import
author | Frank Benoit <benoit@tionex.de> |
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date | Tue, 21 Apr 2009 11:03:33 +0200 |
parents | 6208d4f6a277 |
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1 /******************************************************************************* |
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2 * Copyright (c) 2006, 2007 IBM Corporation and others. |
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3 * All rights reserved. This program and the accompanying materials |
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4 * are made available under the terms of the Eclipse Public License v1.0 |
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5 * which accompanies this distribution, and is available at |
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6 * http://www.eclipse.org/legal/epl-v10.html |
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7 * |
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8 * Contributors: |
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9 * IBM Corporation - initial API and implementation |
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10 *******************************************************************************/ |
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11 |
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12 module org.eclipse.core.internal.databinding.observable.tree.TreeDiffNode; |
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13 |
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14 import java.lang.all; |
95
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15 |
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16 /** |
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17 * @since 1.1 |
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18 * |
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19 */ |
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20 public abstract class TreeDiffNode { |
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21 |
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22 /** |
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23 * |
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24 */ |
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25 public final static int NO_CHANGE = 0x00; |
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26 |
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27 /** |
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28 * |
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29 */ |
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30 public final static int ADDED = 0x01; |
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31 |
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32 /** |
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33 * |
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34 */ |
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35 public final static int REMOVED = 0x02; |
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36 |
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37 /** |
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38 * |
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39 */ |
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40 public final static int REPLACED = 0x03; |
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41 |
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42 /** |
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43 * |
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44 */ |
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45 public static final TreeDiffNode[] NO_CHILDREN = new TreeDiffNode[0]; |
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46 |
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47 /** |
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48 * |
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49 */ |
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50 public static final int INDEX_UNKNOWN = -1; |
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51 |
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52 /** |
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53 * @return the change type |
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54 */ |
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55 public abstract int getChangeType(); |
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56 |
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57 /** |
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58 * @return the element that was removed, or the replaced element |
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59 */ |
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60 public abstract Object getOldElement(); |
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61 |
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62 /** |
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63 * @return the element that was not changed, added, or the replacement |
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64 * element |
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65 */ |
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66 public abstract Object getNewElement(); |
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67 |
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68 /** |
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69 * @return the index at which the element was added, removed, or replaced |
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70 */ |
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71 public abstract int getIndex(); |
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72 |
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73 /** |
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74 * Returns the child tree diff objects that describe changes to children. If |
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75 * the change type is REMOVED, there will be no children. |
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76 * |
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77 * @return the nodes representing changes to children |
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78 */ |
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79 public abstract TreeDiffNode[] getChildren(); |
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80 |
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81 protected void doAccept(TreeDiffVisitor visitor, TreePath parentPath) { |
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82 TreePath currentPath = parentPath.createChildPath(getNewElement()); |
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83 bool recurse = visitor.visit(this, currentPath); |
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84 if (recurse) { |
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85 TreeDiffNode[] children = getChildren(); |
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86 for (int i = 0; i < children.length; i++) { |
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87 TreeDiffNode child = children[i]; |
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88 child.doAccept(visitor, currentPath); |
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89 } |
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90 } |
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91 } |
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92 |
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93 } |