[922] | 1 | package de.ugoe.cs.autoquest.tasktrees.nodeequality; |
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[807] | 2 | |
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[922] | 3 | import de.ugoe.cs.autoquest.eventcore.gui.IInteraction; |
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| 4 | import de.ugoe.cs.autoquest.eventcore.gui.TextInput; |
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| 5 | import de.ugoe.cs.autoquest.eventcore.gui.ValueSelection; |
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| 6 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IEventTask; |
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| 7 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskTreeNode; |
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[807] | 8 | |
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| 9 | /** |
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| 10 | * <p> |
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| 11 | * This rule compares GUI event tasks (i.e. it is more concrete, than the |
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| 12 | * {@link EventTaskComparisonRule}). Two GUI event tasks are only equal if their event type and |
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| 13 | * target are equal. The returned equality is even more fine-grained for events whose type is |
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| 14 | * {@link TextInput} and {@link ValueSelection}. For text inputs, lexical equality is returned if |
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| 15 | * the same text is entered using the same key interactions. Syntactical equality is returned if |
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| 16 | * the same text is entered using different key interactions. Semantical equality is returned if |
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| 17 | * different text is entered, but into the same event target. Value selections are syntactically |
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| 18 | * equal, if the same value is selected. Otherwise they are semantically equal. |
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| 19 | * </p> |
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| 20 | * |
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| 21 | * @author Patrick Harms |
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| 22 | */ |
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| 23 | public class GUIEventTaskComparisonRule implements NodeComparisonRule { |
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| 24 | |
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| 25 | /* |
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| 26 | * (non-Javadoc) |
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| 27 | * |
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| 28 | * @see de.ugoe.cs.tasktree.nodeequality.NodeEqualityRule#apply(TaskTreeNode, TaskTreeNode) |
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| 29 | */ |
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| 30 | @Override |
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| 31 | public NodeEquality compare(ITaskTreeNode node1, ITaskTreeNode node2) { |
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| 32 | if ((!(node1 instanceof IEventTask)) || (!(node2 instanceof IEventTask))) { |
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| 33 | return null; |
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| 34 | } |
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| 35 | |
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| 36 | IEventTask task1 = (IEventTask) node1; |
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| 37 | IEventTask task2 = (IEventTask) node2; |
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| 38 | |
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| 39 | if ((!(task1.getEventType() instanceof IInteraction)) || |
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| 40 | (!(task2.getEventType() instanceof IInteraction))) |
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| 41 | { |
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| 42 | return null; |
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| 43 | } |
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| 44 | |
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| 45 | if (node1 == node2) { |
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| 46 | return NodeEquality.IDENTICAL; |
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| 47 | } |
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| 48 | |
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| 49 | if (!task1.getEventTarget().equals(task2.getEventTarget())) { |
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| 50 | return NodeEquality.UNEQUAL; |
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| 51 | } |
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| 52 | |
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| 53 | IInteraction interaction1 = (IInteraction) task1.getEventType(); |
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| 54 | IInteraction interaction2 = (IInteraction) task2.getEventType(); |
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| 55 | |
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| 56 | return compareInteractions(interaction1, interaction2); |
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| 57 | } |
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| 58 | |
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| 59 | /** |
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| 60 | * <p> |
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| 61 | * compares two interactions. The method delegates two |
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| 62 | * {@link #compareTextInputs(TextInput, TextInput)} and |
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| 63 | * {@link #compareValueSelections(ValueSelection, ValueSelection)} for text inputs and value |
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| 64 | * selections. Otherwise it uses the equal method of the interactions for comparison. In this |
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| 65 | * case, if the interactions equal method returns true, this method returns lexical equality. |
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| 66 | * </p> |
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| 67 | * |
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| 68 | * @param interaction1 the first interaction to compare |
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| 69 | * @param interaction2 the second interaction to compare |
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| 70 | * |
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| 71 | * @return as described |
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| 72 | */ |
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| 73 | private NodeEquality compareInteractions(IInteraction interaction1, IInteraction interaction2) { |
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| 74 | if (interaction1 == interaction2) { |
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| 75 | return NodeEquality.LEXICALLY_EQUAL; |
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| 76 | } |
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| 77 | else if ((interaction1 instanceof TextInput) && (interaction2 instanceof TextInput)) { |
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| 78 | return compareTextInputs((TextInput) interaction1, (TextInput) interaction2); |
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| 79 | } |
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| 80 | else if ((interaction1 instanceof ValueSelection) && |
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| 81 | (interaction2 instanceof ValueSelection)) |
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| 82 | { |
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| 83 | return compareValueSelections |
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| 84 | ((ValueSelection<?>) interaction1, (ValueSelection<?>) interaction2); |
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| 85 | } |
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| 86 | else if (interaction1.equals(interaction2)) { |
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| 87 | return NodeEquality.LEXICALLY_EQUAL; |
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| 88 | } |
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| 89 | else { |
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| 90 | return NodeEquality.UNEQUAL; |
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| 91 | } |
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| 92 | } |
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| 93 | |
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| 94 | /** |
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| 95 | * <p> |
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| 96 | * compares two text inputs. If both text inputs have the same entered text and text input |
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| 97 | * events, they are lexically equal. If they only have the same entered text, they are |
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| 98 | * syntactically equal. If they are only both text inputs, they are semantically equal. |
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| 99 | * (the equality of the event targets is checked beforehand). |
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| 100 | * </p> |
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| 101 | * |
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| 102 | * @param interaction1 the first text input to compare |
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| 103 | * @param interaction2 the second text input to compare |
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| 104 | * |
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| 105 | * @return as described |
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| 106 | */ |
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| 107 | private NodeEquality compareTextInputs(TextInput interaction1, TextInput interaction2) { |
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| 108 | if (interaction1.getEnteredText().equals(interaction2.getEnteredText())) { |
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| 109 | if (interaction1.getTextInputEvents().equals(interaction2.getTextInputEvents())) { |
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| 110 | return NodeEquality.LEXICALLY_EQUAL; |
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| 111 | } |
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| 112 | else { |
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| 113 | return NodeEquality.SYNTACTICALLY_EQUAL; |
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| 114 | } |
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| 115 | } |
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| 116 | else { |
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| 117 | return NodeEquality.SEMANTICALLY_EQUAL; |
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| 118 | } |
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| 119 | } |
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| 120 | |
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| 121 | /** |
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| 122 | * <p> |
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| 123 | * compares two value selections. If both value selections have the same selected value, they |
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| 124 | * are syntactically equal, otherwise they are semantically equal. |
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| 125 | * (the equality of the event targets is checked beforehand). |
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| 126 | * </p> |
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| 127 | * |
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| 128 | * @param interaction1 the first value selection to compare |
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| 129 | * @param interaction2 the second value selection to compare |
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| 130 | * |
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| 131 | * @return as described |
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| 132 | */ |
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| 133 | private NodeEquality compareValueSelections(ValueSelection<?> interaction1, |
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| 134 | ValueSelection<?> interaction2) |
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| 135 | { |
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| 136 | Object value1 = interaction1.getSelectedValue(); |
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| 137 | Object value2 = interaction2.getSelectedValue(); |
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| 138 | |
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| 139 | if ((value1 == value2) || ((value1 != null) && (value1.equals(value2)))) { |
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[969] | 140 | return NodeEquality.LEXICALLY_EQUAL; |
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[807] | 141 | } |
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| 142 | else { |
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| 143 | return NodeEquality.SEMANTICALLY_EQUAL; |
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| 144 | } |
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| 145 | } |
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| 146 | |
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| 147 | } |
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