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annotate dwtx/draw2d/EventDispatcher.d @ 98:95307ad235d9

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Added Draw2d code, still work in progress
author Frank Benoit <benoit@tionex.de>
date Sun, 03 Aug 2008 00:52:14 +0200
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2005 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 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module dwtx.draw2d.EventDispatcher;
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14
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15 import dwt.dwthelper.utils;
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16
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17 import dwt.accessibility.AccessibleControlEvent;
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18 import dwt.accessibility.AccessibleControlListener;
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19 import dwt.accessibility.AccessibleListener;
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20 import dwt.events.FocusEvent;
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21 import dwt.events.KeyEvent;
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22 import dwt.events.MouseEvent;
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23 import dwt.events.TraverseEvent;
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24 import dwt.widgets.Control;
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25 import dwt.widgets.Event;
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26
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27 import dwtx.draw2d.IFigure;
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28
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29 /**
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30 * Listens to various DWT events and dispatches these events to interested Draw2d objects.
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31 */
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32 public abstract class EventDispatcher {
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33
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34 /**
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35 * Combines {@link AccessibleControlListener} and {@link AccessibleListener}.
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36 * Implements {@link AccessibleControlListener#getChild(AccessibleControlEvent)} to do
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37 * nothing.
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38 */
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39 public abstract static class AccessibilityDispatcher
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40 : AccessibleControlListener, AccessibleListener
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41 {
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42 /** @see AccessibleControlListener#getChild(AccessibleControlEvent) */
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43 public void getChild(AccessibleControlEvent e) { }
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44 }
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45
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46 /**
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47 * Dispatches a focus gained event.
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48 * @param e the event
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49 */
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50 public abstract void dispatchFocusGained(FocusEvent e);
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51
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52 /**
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53 * Dispatches a focus lost event.
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54 * @param e the event
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55 */
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56 public abstract void dispatchFocusLost(FocusEvent e);
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57
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58 /**
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59 * Dispatches a key pressed event.
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60 * @param e the event
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61 */
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62 public abstract void dispatchKeyPressed(KeyEvent e);
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63
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64 /**
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65 * Dispatches a key released event.
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66 * @param e the event
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67 */
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68 public abstract void dispatchKeyReleased(KeyEvent e);
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69
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70 /**
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71 * Dispatches a key traversed event.
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72 * @param e the event
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73 */
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74 public abstract void dispatchKeyTraversed(TraverseEvent e);
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75
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76 /**
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77 * Dispatches a mouse double clicked event.
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78 * @param me the event
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79 */
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80 public abstract void dispatchMouseDoubleClicked(MouseEvent me);
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81
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82 /**
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83 * Dispatches a mouse entered event.
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84 * @param e the event
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85 */
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86 public abstract void dispatchMouseEntered(MouseEvent e);
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87
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88 /**
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89 * Dispatches a mouse exited event.
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90 * @param e the event
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91 */
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92 public abstract void dispatchMouseExited(MouseEvent e);
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93
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94 /**
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95 * Dispatches a mouse hover event.
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96 * @param me the event
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97 */
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98 public abstract void dispatchMouseHover(MouseEvent me);
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99
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100 /**
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101 * Dispatches a moved event event.
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102 * @param me the event
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103 */
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104 public abstract void dispatchMouseMoved(MouseEvent me);
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105
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106 /**
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107 * Dispatches a mouse pressed event.
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108 * @param me the event
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109 */
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110 public abstract void dispatchMousePressed(MouseEvent me);
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111
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112 /**
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113 * Dispatches a mouse released event.
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114 * @param me the event
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115 */
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116 public abstract void dispatchMouseReleased(MouseEvent me);
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117
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118 /**
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119 * Dispatches a MouseWheel event. Does nothing by default.
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120 * @param event the DWT event
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121 * @since 3.1
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122 */
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123 public void dispatchMouseWheelScrolled(Event event) { }
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124
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125 /**
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126 * Returns the AccessibilityDispatcher.
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127 * @return the AccessibilityDispatcher
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128 */
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129 protected abstract AccessibilityDispatcher getAccessibilityDispatcher();
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130 package AccessibilityDispatcher getAccessibilityDispatcher_package(){
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131 return getAccessibilityDispatcher();
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132 }
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133
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134 /**
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135 * @return the IFigure that currently has focus
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136 */
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137 /*package*/ abstract IFigure getFocusOwner();
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138
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139 /**
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140 * @return whether events are captured by a figure
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141 */
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142 public abstract bool isCaptured();
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143
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144 /**
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145 * Releases capture initiated by {@link #setCapture(IFigure)}.
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146 */
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147 protected abstract void releaseCapture();
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148
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149 /**
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150 * Requests focus for the given figure.
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151 * @param fig the figure requesting focus
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152 */
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153 public abstract void requestFocus(IFigure fig);
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154
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155 /**
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156 * Requests focus to be removed from the given figure.
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157 * @param fig the figure requesting focus be removed
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158 */
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159 public abstract void requestRemoveFocus(IFigure fig);
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160
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161 /**
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162 * Sets capture to the given figure. All subsequent events will be sent to the given
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163 * figure until {@link #releaseCapture()} is called.
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164 *
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165 * @param figure the figure capturing the events
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166 */
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167 protected abstract void setCapture(IFigure figure);
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168
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169 /**
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170 * Sets the contol associated with this event dispatcher.
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171 * @param control the control
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172 */
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173 public abstract void setControl(Control control);
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174
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175 /**
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176 * Sets the root figure for this dispatcher.
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177 * @param figure the root figure
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178 */
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179 public abstract void setRoot(IFigure figure);
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180
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181 /**
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182 * Updates the cursor.
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183 */
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184 protected abstract void updateCursor();
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185
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186 package void updateCursor_package(){
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187 updateCursor();
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188 }
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189
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190 }