[545] | 1 | // Module : $RCSfile: GUIModel.java,v $ |
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| 2 | // Version : $Revision: 0.0 $ $Author: pharms $ $Date: 14.08.2012 $ |
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| 3 | // Project : quest-core-events |
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| 4 | // Creation : 2012 by pharms |
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| 5 | // Copyright : Patrick Harms, 2012 |
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| 6 | |
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| 7 | package de.ugoe.cs.quest.eventcore.guimodel; |
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| 8 | |
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| 9 | import java.util.ArrayList; |
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[603] | 10 | import java.util.LinkedList; |
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[545] | 11 | import java.util.List; |
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| 12 | |
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| 13 | /** |
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[576] | 14 | * <p> |
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| 15 | * The goal of a GUI model is to correctly l |
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| 16 | * </p> |
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[545] | 17 | * |
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| 18 | * @version $Revision: $ $Date: 14.08.2012$ |
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| 19 | * @author 2012, last modified by $Author: pharms$ |
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| 20 | */ |
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[576] | 21 | public class GUIModel { |
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[545] | 22 | |
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| 23 | /** |
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| 24 | * |
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| 25 | */ |
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[576] | 26 | private TreeNode root = new TreeNode(); |
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| 27 | |
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[545] | 28 | /** |
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| 29 | * |
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| 30 | */ |
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[576] | 31 | private List<TreeNode> allNodes = new ArrayList<TreeNode>(); |
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[545] | 32 | |
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| 33 | /** |
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| 34 | * TODO: comment |
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| 35 | * |
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| 36 | * @param currentGUIElementPath |
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| 37 | * @return |
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| 38 | * @throws GUIModelException |
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| 39 | */ |
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[576] | 40 | public IGUIElement integratePath(List<? extends IGUIElementSpec> guiElementPath, |
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| 41 | IGUIElementFactory guiElementFactory) |
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| 42 | throws GUIModelException |
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| 43 | { |
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[611] | 44 | if ((guiElementPath == null) || (guiElementPath.size() <= 0)) { |
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| 45 | throw new IllegalArgumentException |
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| 46 | ("GUI element path must contain at least one element"); |
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| 47 | } |
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| 48 | |
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[603] | 49 | List<IGUIElementSpec> remainingPath = new LinkedList<IGUIElementSpec>(); |
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[545] | 50 | |
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[576] | 51 | for (IGUIElementSpec spec : guiElementPath) |
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| 52 | { |
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| 53 | remainingPath.add(spec); |
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[545] | 54 | } |
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| 55 | |
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[576] | 56 | return integratePath(root, remainingPath, guiElementFactory); |
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[545] | 57 | } |
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| 58 | |
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| 59 | /** |
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| 60 | * TODO: comment |
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| 61 | * |
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| 62 | * @param root |
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| 63 | * @return |
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| 64 | */ |
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[576] | 65 | public List<IGUIElement> getChildren(IGUIElement guiElement) { |
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| 66 | for (TreeNode node : allNodes) { |
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| 67 | if (node.guiElement.equals(guiElement)) { |
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| 68 | List<IGUIElement> result = new ArrayList<IGUIElement>(); |
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| 69 | |
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| 70 | if (node.children != null) { |
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| 71 | for (TreeNode child : node.children) { |
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| 72 | result.add(child.guiElement); |
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| 73 | } |
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| 74 | } |
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| 75 | |
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| 76 | return result; |
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| 77 | } |
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| 78 | } |
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| 79 | |
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| 80 | return null; |
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[545] | 81 | } |
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| 82 | |
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| 83 | /** |
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[593] | 84 | * <p> |
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[545] | 85 | * TODO: comment |
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[593] | 86 | * </p> |
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[545] | 87 | * |
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[593] | 88 | * @param guiElement |
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[545] | 89 | * @return |
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| 90 | */ |
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[593] | 91 | public IGUIElement getParent(IGUIElement guiElement) { |
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| 92 | for (TreeNode node : allNodes) { |
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| 93 | for (TreeNode child : node.children) { |
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| 94 | if (child.guiElement.equals(guiElement)) { |
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| 95 | return node.guiElement; |
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| 96 | } |
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| 97 | } |
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| 98 | } |
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| 99 | |
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| 100 | return null; |
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| 101 | } |
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| 102 | |
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| 103 | /** |
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| 104 | * TODO: comment |
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| 105 | * |
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| 106 | * @return |
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| 107 | */ |
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[576] | 108 | public List<IGUIElement> getRootElements() { |
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| 109 | List<IGUIElement> roots = new ArrayList<IGUIElement>(); |
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[611] | 110 | |
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| 111 | if (root.children != null) { |
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| 112 | for (TreeNode rootChild : root.children) { |
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| 113 | roots.add(rootChild.guiElement); |
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| 114 | } |
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[545] | 115 | } |
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[611] | 116 | |
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[545] | 117 | return roots; |
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| 118 | } |
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| 119 | |
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| 120 | /** |
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[576] | 121 | * <p> |
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[545] | 122 | * TODO: comment |
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[576] | 123 | * </p> |
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[545] | 124 | * |
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[576] | 125 | * @param root2 |
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[545] | 126 | * @param guiElementPath |
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[576] | 127 | * @param guiElementFactory |
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| 128 | * @return |
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[545] | 129 | * @throws GUIModelException |
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| 130 | */ |
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[576] | 131 | private IGUIElement integratePath(TreeNode parentNode, |
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| 132 | List<? extends IGUIElementSpec> remainingPath, |
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| 133 | IGUIElementFactory guiElementFactory) |
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| 134 | throws GUIModelException |
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| 135 | { |
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| 136 | IGUIElementSpec specToIntegrateElementFor = remainingPath.remove(0); |
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[611] | 137 | |
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| 138 | List<TreeNode> similarNodes = |
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| 139 | determineSimilarChildNodes(parentNode, specToIntegrateElementFor); |
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[545] | 140 | |
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[611] | 141 | if (similarNodes.size() > 1) { |
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| 142 | // this may happen, if the GUI elements changed over time (e.g. their name is usually |
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| 143 | // set later in the program execution) and if they now match because of the changes. |
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| 144 | // So perform a merge of all similar children of the current parent node to reduce the |
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| 145 | // model and then try the determination of matching children again. |
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| 146 | mergeSimilarChildren(parentNode); |
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| 147 | similarNodes = determineSimilarChildNodes(parentNode, specToIntegrateElementFor); |
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| 148 | |
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| 149 | if (similarNodes.size() > 1) { |
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| 150 | // this can happen, because the similarity check is not transitive. The new GUI |
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| 151 | // element may be similar to two or more existing ones, but the existing ones |
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| 152 | // may not be similar to each other. As an example, the new GUI element may |
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| 153 | // not yet provide sufficient information (such as all names it will have during |
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| 154 | // the execution of the program). Therefore the similarity check with GUI elements |
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| 155 | // that already contain more information may return true. But the similarity check |
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| 156 | // of two GUI elements that already carry a lot of information may return false, |
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| 157 | // although both are similar to the new GUI element. Therefore, we try a selection |
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| 158 | // based on the children of the existing and new GUI elements. The one for which |
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| 159 | // the existing children match best is selected to be the right one. |
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| 160 | similarNodes = |
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| 161 | considerSubChildren(similarNodes, specToIntegrateElementFor, remainingPath); |
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| 162 | |
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| 163 | if (similarNodes.size() > 1) { |
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| 164 | System.out.println("TODO: implement handling to many similar children: " + |
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| 165 | specToIntegrateElementFor); |
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| 166 | for (TreeNode similarNode : similarNodes) { |
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| 167 | System.out.println(" " + similarNode.guiElement); |
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| 168 | } |
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| 169 | System.out.println(); |
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[545] | 170 | } |
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| 171 | } |
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| 172 | } |
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[611] | 173 | else if (similarNodes.size() == 1) { |
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| 174 | similarNodes.get(0).guiElement.updateSpecification(specToIntegrateElementFor); |
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| 175 | } |
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| 176 | else if (similarNodes.size() == 0) { |
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| 177 | // if we get here, the corresponding path does not exist yet. So create it |
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[603] | 178 | IGUIElement newElement = guiElementFactory.instantiateGUIElement |
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| 179 | (specToIntegrateElementFor, parentNode.guiElement); |
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| 180 | |
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[611] | 181 | similarNodes.add(parentNode.addChild(newElement)); |
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[576] | 182 | } |
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| 183 | |
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| 184 | if (remainingPath.size() > 0) { |
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[611] | 185 | return integratePath(similarNodes.get(0), remainingPath, guiElementFactory); |
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[576] | 186 | } |
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| 187 | else { |
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[611] | 188 | return similarNodes.get(0).guiElement; |
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[576] | 189 | } |
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[545] | 190 | } |
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| 191 | |
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[576] | 192 | /** |
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| 193 | * <p> |
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[611] | 194 | * TODO: comment |
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| 195 | * </p> |
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| 196 | * |
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| 197 | * @param parentNode |
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| 198 | * @param specToIntegrateElementFor |
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| 199 | * @return |
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| 200 | */ |
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| 201 | private List<TreeNode> determineSimilarChildNodes(TreeNode parentNode, |
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| 202 | IGUIElementSpec specToMatch) |
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| 203 | { |
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| 204 | List<TreeNode> similarChildren = new ArrayList<TreeNode>(); |
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| 205 | |
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| 206 | if (parentNode.children != null) { |
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| 207 | for (TreeNode child : parentNode.children) { |
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| 208 | if (specToMatch.getSimilarity(child.guiElement.getSpecification())) { |
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| 209 | similarChildren.add(child); |
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| 210 | } |
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| 211 | } |
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| 212 | } |
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| 213 | |
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| 214 | return similarChildren; |
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| 215 | } |
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| 216 | |
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| 217 | /** |
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| 218 | * <p> |
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| 219 | * TODO: comment |
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| 220 | * </p> |
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| 221 | * |
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| 222 | * @param similarChildren |
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| 223 | * @param remove |
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| 224 | * @return |
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| 225 | */ |
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| 226 | private List<TreeNode> considerSubChildren(List<TreeNode> similarNodes, |
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| 227 | IGUIElementSpec specToMatch, |
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| 228 | List<? extends IGUIElementSpec> remainingPath) |
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| 229 | { |
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| 230 | List<TreeNode> reducedList = new ArrayList<TreeNode>(); |
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| 231 | |
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| 232 | // check, if there are any children to consider and remove any similar node, that has |
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| 233 | // further children |
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| 234 | if (remainingPath.size() <= 0) { |
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| 235 | for (TreeNode similarNode : similarNodes) { |
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| 236 | if ((similarNode.children == null) || (similarNode.children.size() == 0)) { |
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| 237 | reducedList.add(similarNode); |
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| 238 | } |
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| 239 | } |
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| 240 | } |
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| 241 | else { |
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| 242 | // if there are further children to consider, then check if there is already a child |
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| 243 | // node that has an appropriate child |
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| 244 | IGUIElementSpec subChildSpec = remainingPath.get(0); |
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| 245 | for (TreeNode similarNode : similarNodes) { |
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| 246 | if (similarNode.children != null) { |
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| 247 | for (TreeNode subchild : similarNode.children) { |
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| 248 | if (subchild.guiElement.getSpecification().getSimilarity(subChildSpec)) { |
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| 249 | reducedList.add(similarNode); |
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| 250 | break; |
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| 251 | } |
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| 252 | } |
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| 253 | } |
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| 254 | } |
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| 255 | } |
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| 256 | |
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| 257 | return reducedList; |
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| 258 | } |
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| 259 | |
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| 260 | /** |
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| 261 | * <p> |
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| 262 | * TODO: comment |
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| 263 | * </p> |
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| 264 | * |
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| 265 | * @param parentNode |
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| 266 | */ |
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| 267 | private void mergeSimilarChildren(TreeNode parentNode) { |
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| 268 | boolean performedMerge; |
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| 269 | |
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| 270 | do { |
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| 271 | performedMerge = false; |
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| 272 | if (parentNode.children != null) { |
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| 273 | for (int i = 0; (!performedMerge) && (i < parentNode.children.size()); i++) { |
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| 274 | for (int j = i + 1; j < parentNode.children.size(); j++) { |
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| 275 | IGUIElement elem1 = parentNode.children.get(i).guiElement; |
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| 276 | IGUIElement elem2 = parentNode.children.get(j).guiElement; |
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| 277 | if (elem1.getSpecification().getSimilarity(elem2.getSpecification())) { |
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| 278 | TreeNode replacement = mergeTreeNodes(parentNode.children.get(i), |
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| 279 | parentNode.children.get(j)); |
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| 280 | |
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| 281 | parentNode.children.set(i, replacement); |
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| 282 | parentNode.children.remove(j); |
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| 283 | performedMerge = true; |
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| 284 | break; |
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| 285 | } |
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| 286 | } |
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| 287 | } |
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| 288 | } |
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| 289 | } |
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| 290 | while (performedMerge); |
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| 291 | } |
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| 292 | |
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| 293 | /** |
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| 294 | * <p> |
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| 295 | * TODO: comment |
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| 296 | * </p> |
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| 297 | * |
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| 298 | * @param treeNode |
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| 299 | * @param treeNode2 |
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| 300 | * @return |
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| 301 | */ |
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| 302 | private TreeNode mergeTreeNodes(TreeNode treeNode1, TreeNode treeNode2) { |
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| 303 | TreeNode replacement = new TreeNode(); |
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| 304 | |
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| 305 | replacement.guiElement = treeNode1.guiElement; |
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| 306 | |
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| 307 | // the following two lines are needed to preserve the references to the existing GUI |
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| 308 | // elements. If two elements are the same, one should be deleted to make the elements |
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| 309 | // singletons again. However, there may exist references to both objects. To preserve |
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| 310 | // these, we simply register the equal GUI elements with each other so that an equals |
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| 311 | // check can return true. |
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| 312 | replacement.guiElement.addEqualGUIElement(treeNode2.guiElement); |
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| 313 | treeNode2.guiElement.addEqualGUIElement(replacement.guiElement); |
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| 314 | |
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| 315 | if (treeNode1.children != null) { |
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| 316 | for (TreeNode child : treeNode1.children) { |
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| 317 | replacement.addChild(child.guiElement); |
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| 318 | } |
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| 319 | } |
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| 320 | |
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| 321 | if (treeNode2.children != null) { |
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| 322 | for (TreeNode child : treeNode2.children) { |
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| 323 | replacement.addChild(child.guiElement); |
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| 324 | } |
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| 325 | } |
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| 326 | |
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| 327 | mergeSimilarChildren(replacement); |
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| 328 | |
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| 329 | replacement.guiElement.updateSpecification(treeNode2.guiElement.getSpecification()); |
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| 330 | |
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| 331 | return replacement; |
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| 332 | } |
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| 333 | |
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| 334 | /** |
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| 335 | * <p> |
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[576] | 336 | * TODO comment |
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| 337 | * </p> |
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| 338 | * |
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| 339 | * @version $Revision: $ $Date: 17.08.2012$ |
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| 340 | * @author 2012, last modified by $Author: pharms$ |
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| 341 | */ |
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| 342 | private class TreeNode |
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| 343 | { |
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| 344 | /** */ |
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| 345 | private IGUIElement guiElement; |
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| 346 | |
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| 347 | /** */ |
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| 348 | private List<TreeNode> children; |
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| 349 | |
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| 350 | /** */ |
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| 351 | //private TreeNode parent; |
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| 352 | |
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| 353 | /** |
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| 354 | * <p> |
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| 355 | * TODO: comment |
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| 356 | * </p> |
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| 357 | * |
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| 358 | * @param guiElement |
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| 359 | * @return |
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| 360 | */ |
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| 361 | private TreeNode addChild(IGUIElement guiElement) |
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| 362 | { |
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| 363 | if (children == null) |
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| 364 | { |
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| 365 | children = new ArrayList<TreeNode>(); |
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| 366 | } |
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| 367 | |
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| 368 | TreeNode child = new TreeNode(); |
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| 369 | child.guiElement = guiElement; |
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| 370 | //child.parent = this; |
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| 371 | children.add(child); |
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| 372 | |
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| 373 | allNodes.add(child); |
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| 374 | |
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| 375 | return child; |
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| 376 | } |
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| 377 | } |
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[545] | 378 | } |
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