1 | package de.ugoe.cs.quest.tasktrees.temporalrelation; |
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2 | |
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3 | import java.util.ArrayList; |
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4 | import java.util.List; |
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5 | import java.util.Locale; |
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6 | |
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7 | import de.ugoe.cs.quest.eventcore.IEventTarget; |
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8 | import de.ugoe.cs.quest.eventcore.gui.KeyInteraction; |
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9 | import de.ugoe.cs.quest.eventcore.gui.KeyPressed; |
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10 | import de.ugoe.cs.quest.eventcore.gui.KeyReleased; |
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11 | import de.ugoe.cs.quest.eventcore.guimodel.ITextArea; |
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12 | import de.ugoe.cs.quest.eventcore.guimodel.ITextField; |
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13 | import de.ugoe.cs.quest.tasktrees.treeifc.IEventTask; |
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14 | import de.ugoe.cs.quest.tasktrees.treeifc.ISequence; |
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15 | import de.ugoe.cs.quest.tasktrees.treeifc.ITaskTreeBuilder; |
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16 | import de.ugoe.cs.quest.tasktrees.treeifc.ITaskTreeNode; |
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17 | import de.ugoe.cs.quest.tasktrees.treeifc.ITaskTreeNodeFactory; |
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18 | import de.ugoe.cs.quest.tasktrees.treeifc.ITextInputEventTask; |
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19 | import de.ugoe.cs.tasktree.keyboardmaps.KeyboardMap; |
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20 | import de.ugoe.cs.tasktree.keyboardmaps.KeyboardMapFactory; |
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21 | import de.ugoe.cs.tasktree.keyboardmaps.VirtualKey; |
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22 | |
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23 | /** |
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24 | * TODO comment |
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25 | * |
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26 | * @version $Revision: $ $Date: 18.03.2012$ |
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27 | * @author 2012, last modified by $Author: patrick$ |
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28 | */ |
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29 | public class DefaultTextInputReductionRule implements TemporalRelationshipRule { |
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30 | |
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31 | /** */ |
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32 | private KeyboardMap keyboardMap = KeyboardMapFactory.createKeyboardMap(Locale.GERMAN); |
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33 | |
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34 | /* |
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35 | * (non-Javadoc) |
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36 | * |
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37 | * @see TemporalRelationshipRule#apply(TaskTreeNode, TaskTreeBuilder, TaskTreeNodeFactory) |
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38 | */ |
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39 | @Override |
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40 | public RuleApplicationResult apply(ITaskTreeNode parent, |
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41 | ITaskTreeBuilder builder, |
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42 | ITaskTreeNodeFactory nodeFactory, |
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43 | boolean finalize) |
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44 | { |
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45 | if ((!(parent instanceof ISequence)) || (parent instanceof ITextInputEventTask)) { |
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46 | return null; |
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47 | } |
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48 | |
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49 | RuleApplicationResult result = new RuleApplicationResult(); |
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50 | int textEntryStartIndex = -1; |
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51 | IEventTarget currentEventTarget = null; |
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52 | |
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53 | int index = 0; |
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54 | ITaskTreeNode task = null; |
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55 | while (index < parent.getChildren().size()) { |
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56 | task = parent.getChildren().get(index); |
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57 | if (isKeyInteraction(task) && |
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58 | isDataInputEventTarget(((IEventTask) task).getEventTarget())) |
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59 | { |
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60 | if (textEntryStartIndex < 0) { |
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61 | textEntryStartIndex = index; |
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62 | currentEventTarget = ((IEventTask) task).getEventTarget(); |
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63 | } |
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64 | else if (!currentEventTarget.equals(((IEventTask) task).getEventTarget())) { |
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65 | handleTextEntrySequence(parent, textEntryStartIndex, index - 1, |
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66 | currentEventTarget, builder, nodeFactory, result); |
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67 | return result; |
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68 | } |
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69 | } |
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70 | else if (textEntryStartIndex >= 0) { |
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71 | handleTextEntrySequence(parent, textEntryStartIndex, index - 1, currentEventTarget, |
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72 | builder, nodeFactory, result); |
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73 | return result; |
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74 | } |
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75 | |
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76 | index++; |
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77 | } |
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78 | |
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79 | if (textEntryStartIndex >= 0) { |
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80 | if (finalize) { |
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81 | handleTextEntrySequence(parent, textEntryStartIndex, |
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82 | parent.getChildren().size() - 1, currentEventTarget, |
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83 | builder, nodeFactory, result); |
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84 | } |
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85 | else { |
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86 | result.setRuleApplicationStatus(RuleApplicationStatus.RULE_APPLICATION_FEASIBLE); |
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87 | } |
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88 | } |
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89 | |
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90 | return result; |
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91 | } |
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92 | |
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93 | /** |
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94 | * TODO: comment |
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95 | * |
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96 | * @param taskTreeNode |
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97 | * @return |
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98 | */ |
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99 | private boolean isKeyInteraction(ITaskTreeNode taskTreeNode) { |
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100 | if ((taskTreeNode instanceof IEventTask)) { |
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101 | return (((IEventTask) taskTreeNode).getEventType() instanceof KeyInteraction); |
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102 | } |
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103 | else { |
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104 | return false; |
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105 | } |
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106 | } |
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107 | |
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108 | /** |
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109 | * TODO: comment |
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110 | * |
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111 | * @param textEntryStartIndex |
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112 | * @param i |
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113 | * @param result |
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114 | * @return |
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115 | */ |
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116 | private void handleTextEntrySequence(ITaskTreeNode parent, |
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117 | int startIndex, |
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118 | int endIndex, |
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119 | IEventTarget eventTarget, |
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120 | ITaskTreeBuilder builder, |
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121 | ITaskTreeNodeFactory nodeFactory, |
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122 | RuleApplicationResult result) |
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123 | { |
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124 | ITextInputEventTask textInput = nodeFactory.createNewTextInputEventTask(eventTarget); |
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125 | |
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126 | for (int i = startIndex; i <= endIndex; i++) { |
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127 | builder.addChild(textInput, parent.getChildren().get(startIndex)); |
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128 | builder.removeChild((ISequence) parent, startIndex); |
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129 | } |
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130 | |
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131 | builder.addChild((ISequence) parent, startIndex, textInput); |
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132 | |
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133 | StringBuffer enteredText = new StringBuffer(); |
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134 | determineEnteredText(textInput, new ArrayList<VirtualKey>(), enteredText); |
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135 | textInput.setEnteredText(enteredText.toString()); |
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136 | |
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137 | result.addNewlyCreatedParentNode(textInput); |
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138 | result.setRuleApplicationStatus(RuleApplicationStatus.RULE_APPLICATION_FINISHED); |
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139 | } |
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140 | |
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141 | /** |
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142 | * TODO: comment |
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143 | * |
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144 | * @param eventTarget |
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145 | * @return |
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146 | */ |
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147 | private boolean isDataInputEventTarget(IEventTarget eventTarget) { |
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148 | return ((eventTarget instanceof ITextField) || (eventTarget instanceof ITextArea)); |
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149 | } |
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150 | |
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151 | /** |
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152 | * TODO: comment |
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153 | * |
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154 | * @param sequence |
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155 | * @param enteredText |
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156 | */ |
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157 | private void determineEnteredText(ITaskTreeNode node, |
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158 | List<VirtualKey> pressedKeys, |
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159 | StringBuffer enteredText) |
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160 | { |
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161 | if ((node instanceof ISequence) || (node instanceof ITextInputEventTask)) { |
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162 | for (ITaskTreeNode child : node.getChildren()) { |
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163 | if (child instanceof IEventTask) { |
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164 | if (((IEventTask) child).getEventType() instanceof KeyPressed) { |
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165 | VirtualKey key = |
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166 | ((KeyPressed) ((IEventTask) child).getEventType()).getKey(); |
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167 | |
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168 | pressedKeys.add(key); |
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169 | |
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170 | if (key == VirtualKey.BACK_SPACE) { |
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171 | if (enteredText.length() > 0) { |
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172 | enteredText.deleteCharAt(enteredText.length() - 1); |
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173 | } |
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174 | } |
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175 | else if (key == VirtualKey.ENTER) { |
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176 | // text fields only contain one line of code. Therefore the return is |
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177 | // ignored. |
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178 | if (!(((IEventTask) child).getEventTarget() instanceof ITextField)) { |
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179 | enteredText.append(getCharacter(key, pressedKeys)); |
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180 | } |
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181 | } |
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182 | else { |
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183 | char theChar = getCharacter(key, pressedKeys); |
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184 | if (theChar != Character.UNASSIGNED) { |
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185 | enteredText.append(theChar); |
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186 | } |
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187 | } |
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188 | } |
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189 | else if (((IEventTask) child).getEventType() instanceof KeyReleased) { |
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190 | pressedKeys.remove |
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191 | (((KeyReleased) ((IEventTask) child).getEventType()).getKey()); |
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192 | } |
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193 | } |
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194 | else { |
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195 | determineEnteredText(child, pressedKeys, enteredText); |
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196 | } |
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197 | } |
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198 | } |
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199 | } |
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200 | |
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201 | /** |
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202 | * TODO: comment |
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203 | * |
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204 | * @param key |
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205 | * @param pressedKeys |
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206 | * @return |
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207 | */ |
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208 | private char getCharacter(VirtualKey key, List<VirtualKey> pressedKeys) { |
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209 | boolean numlock = false; |
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210 | boolean shift = false; |
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211 | boolean altgr = false; |
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212 | |
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213 | for (VirtualKey pressedKey : pressedKeys) { |
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214 | if (pressedKey.isShiftKey()) { |
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215 | shift = !shift; |
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216 | } |
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217 | else if (pressedKey == VirtualKey.ALT_GRAPH) { |
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218 | altgr = !altgr; |
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219 | } |
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220 | else if (pressedKey == VirtualKey.NUM_LOCK) { |
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221 | numlock = !numlock; |
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222 | } |
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223 | } |
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224 | |
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225 | return keyboardMap.getCharacterFor(key, numlock, shift, altgr, false); |
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226 | } |
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227 | |
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228 | } |
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