1 | package de.ugoe.cs.eventbench.jfcmonitor;
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2 |
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3 | import java.awt.AWTEvent;
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4 | import java.awt.Component;
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5 | import java.awt.event.AWTEventListener;
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6 | import java.awt.event.KeyEvent;
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7 | import java.awt.event.MouseEvent;
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8 | import java.io.IOException;
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9 | import java.io.OutputStreamWriter;
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10 | import java.lang.reflect.InvocationTargetException;
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11 | import java.lang.reflect.Method;
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12 |
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13 | /**
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14 | * <p>
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15 | * This class implements monitoring of AWT and Swing mouse and keyboard events.
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16 | * Each of the events is written to an output stream.
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17 | * </p>
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18 | *
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19 | * @author Steffen Herbold
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20 | * @version 1.0
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21 | */
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22 | public class JFCListener implements AWTEventListener {
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23 |
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24 | /**
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25 | * <p>
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26 | * Convenience variable.
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27 | * </p>
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28 | */
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29 | final static private String ENDLINE = System.getProperty("line.separator");
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30 |
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31 | /**
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32 | * <p>
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33 | * Writer for logging events.
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34 | * </p>
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35 | */
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36 | final private OutputStreamWriter outputWriter;
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37 |
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38 | public JFCListener(OutputStreamWriter outputWriter) {
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39 | this.outputWriter = outputWriter;
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40 | }
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41 |
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42 | /**
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43 | * <p>
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44 | * Writes all received {@link MouseEvent}s and {@link KeyEvent}s to the
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45 | * {@link #outputWriter}.
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46 | *
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47 | * @see java.awt.event.AWTEventListener#eventDispatched(java.awt.AWTEvent)
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48 | */
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49 | @Override
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50 | public void eventDispatched(AWTEvent event) {
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51 | StringBuilder builder = new StringBuilder();
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52 |
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53 | if (event instanceof MouseEvent) {
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54 | MouseEvent mouseEvent = (MouseEvent) event;
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55 | if (!isMouseMovement(event.getID())) {
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56 | builder.append("<event id=\"" + event.getID() + "\">" + ENDLINE);
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57 | builder.append(" <param name=\"X\" value=\""
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58 | + mouseEvent.getX() + "\" />" + ENDLINE);
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59 | builder.append(" <param name=\"Y\" value=\""
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60 | + mouseEvent.getY() + "\" />" + ENDLINE);
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61 | builder.append(" <param name=\"Button\" value=\""
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62 | + mouseEvent.getButton() + "\" />" + ENDLINE);
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63 | builder.append(" <param name=\"Modifiers\" value=\""
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64 | + mouseEvent.getModifiers() + "\" />" + ENDLINE);
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65 | addSourceInfo(builder, event);
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66 | builder.append("</event>" + ENDLINE);
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67 | }
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68 | }
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69 | if (event instanceof KeyEvent) {
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70 | KeyEvent keyEvent = (KeyEvent) event;
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71 | if (keyEvent.getID() == KeyEvent.KEY_TYPED) {
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72 | builder.append("<event id=\"" + event.getID() + "\">" + ENDLINE);
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73 | builder.append(" <param name=\"KeyCode\" value=\""
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74 | + keyEvent.getKeyCode() + "\" />" + ENDLINE);
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75 | builder.append(" <param name=\"Modifiers\" value=\""
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76 | + keyEvent.getModifiers() + "\" />" + ENDLINE);
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77 | addSourceInfo(builder, event);
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78 | builder.append("</event>" + ENDLINE);
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79 | }
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80 | }
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81 | if (builder.length() > 0 && outputWriter != null) {
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82 | try {
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83 | outputWriter.write(builder.toString());
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84 | outputWriter.flush();
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85 | } catch (IOException e) {
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86 | System.err.println("JFCMONITOR -- Failure writing to log: "
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87 | + e.getMessage());
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88 | }
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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 | * <p>
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94 | * Appends information about the event to a {@link StringBuilder}.
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95 | * </p>
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96 | *
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97 | * @param builder
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98 | * {@link StringBuilder} where the information is appended
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99 | * @param event
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100 | * event whose information is appended
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101 | */
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102 | private void addSourceInfo(StringBuilder builder, AWTEvent event) {
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103 | builder.append(" <source>" + ENDLINE);
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104 | builder.append(" <param name=\"toString\" value=\""
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105 | + event.getSource().toString() + "\" />" + ENDLINE);
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106 | if (event.getSource() instanceof Component) {
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107 | Component source = (Component) event.getSource();
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108 | addComponentInfo(builder, source);
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109 | builder.append(" <parent>" + ENDLINE);
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110 | addComponentInfo(builder, source.getParent());
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111 | builder.append(" </parent>" + ENDLINE);
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112 | }
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113 | builder.append(" </source>" + ENDLINE);
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114 | }
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115 |
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116 | /**
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117 | * <p>
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118 | * Appends information about the component to the a {@link StringBuilder}.
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119 | * The prefix can be used to give further information about the component.
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120 | * </p>
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121 | *
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122 | * @param builder
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123 | * {@link StringBuilder} where the information is appended
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124 | * @param component
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125 | * component whose information is appended
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126 | */
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127 | private void addComponentInfo(StringBuilder builder, Component component) {
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128 | builder.append(" <param name=\"getName\" value=\""
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129 | + component.getName() + "\" />" + ENDLINE);
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130 | for (Method method : component.getClass().getMethods()) {
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131 | try {
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132 | if (method.getName() == "getText") {
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133 | String text = (String) method.invoke(component,
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134 | new Object[] {});
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135 | builder.append(" <param name=\"getText\" value=\"" + text + "\" />" + ENDLINE);
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136 | }
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137 | if (method.getName() == "getTitle") {
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138 | String title = (String) method.invoke(component,
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139 | new Object[] {});
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140 | builder.append(" <param name=\"getTitle\" value=\"" + title + "\" />" + ENDLINE);
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141 | }
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142 | } catch (IllegalArgumentException e) {
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143 | } catch (IllegalAccessException e) {
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144 | } catch (InvocationTargetException e) {
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145 | }
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146 | }
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147 | }
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148 |
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149 | /**
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150 | * <p>
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151 | * Checks if the Id of an {@link AWTEvent} is a mouse movement Id.
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152 | * </p>
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153 | *
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154 | * @param eventId
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155 | * id of the {@link AWTEvent}
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156 | * @return true, if the event is a mouse movement event; false otherwise
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157 | */
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158 | private boolean isMouseMovement(int eventId) {
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159 | return eventId == MouseEvent.MOUSE_MOVED
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160 | || eventId == MouseEvent.MOUSE_DRAGGED
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161 | || eventId == MouseEvent.MOUSE_ENTERED
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162 | || eventId == MouseEvent.MOUSE_EXITED;
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163 | }
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164 |
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165 | }
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