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Fixes to get dwt to work with dmd and ldc
author Jacob Carlborg <doob@me.com>
date Wed, 08 Jul 2009 21:56:44 +0200
parents 63a09873578e
children
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2008 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 *
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11 * Port to the D programming language:
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12 * Jacob Carlborg <doob@me.com>
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13 *******************************************************************************/
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14 module dwt.dnd.DND;
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16 import dwt.dwthelper.utils;
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18
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19 import dwt.DWT;
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20 import dwt.DWTError;
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21 import dwt.DWTException;
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23 /**
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24 *
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25 * Class DND contains all the constants used in defining a
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26 * DragSource or a DropTarget.
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27 *
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28 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
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29 */
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30 public class DND {
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31
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32 /**
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33 * The transfer mechanism for data that is being cut
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34 * and then pasted or copied and then pasted (value is 1).
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35 *
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36 * @see Clipboard
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37 *
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38 * @since 3.1
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39 */
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40 public const static int CLIPBOARD = 1 << 0;
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42 /**
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43 * The transfer mechanism for clients that use the selection
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44 * mechanism (value is 2).
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45 *
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46 * @see Clipboard
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47 *
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48 * @since 3.1
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49 */
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50 public const static int SELECTION_CLIPBOARD = 1 << 1;
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52 /**
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53 * Drag and Drop Operation: no drag/drop operation performed
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54 * (value is 0).
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55 */
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56 public const static int DROP_NONE = 0;
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58 /**
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59 * Drag and Drop Operation: a copy of the data in the drag source is
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60 * added to the drop target (value is 1 &lt;&lt; 0).
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61 */
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62 public const static int DROP_COPY = 1 << 0;
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64 /**
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65 * Drag and Drop Operation: a copy of the data is added to the drop target and
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66 * the original data is removed from the drag source (value is 1 &lt;&lt; 1).
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67 */
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68 public const static int DROP_MOVE = 1 << 1;
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69
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70 /**
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71 * Drag and Drop Operation: the drop target makes a link to the data in
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72 * the drag source (value is 1 &lt;&lt; 2).
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73 */
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74 public const static int DROP_LINK = 1 << 2;
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75
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76 /**
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77 * Drag and Drop Operation: the drop target moves the data and the drag source removes
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78 * any references to the data and updates its display. This is not available on all platforms
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79 * and is only used when a non-DWT application is the drop target. In this case, the DWT
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80 * drag source is informed in the dragFinished event that the drop target has moved the data.
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81 * (value is 1 &lt;&lt; 3).
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82 *
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83 * @see DragSourceListener#dragFinished
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84 */
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85 public const static int DROP_TARGET_MOVE = 1 << 3;
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86
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87 /**
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88 * Drag and Drop Operation: During a dragEnter event or a dragOperationChanged, if no modifier keys
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89 * are pressed, the operation is set to DROP_DEFAULT. The application can choose what the default
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90 * operation should be by setting a new value in the operation field. If no value is choosen, the
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91 * default operation for the platform will be selected (value is 1 &lt;&lt; 4).
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92 *
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93 * @see DropTargetListener#dragEnter
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94 * @see DropTargetListener#dragOperationChanged
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95 * @since 2.0
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96 */
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97 public const static int DROP_DEFAULT = 1 << 4;
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98
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99 /**
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100 * DragSource Event: the drop has successfully completed or has been terminated (such as hitting
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101 * the ESC key); perform cleanup such as removing data on a move operation (value is 2000).
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102 */
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103 public static const int DragEnd = 2000;
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104
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105 /**
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106 * DragSource Event: the data to be dropped is required from the drag source (value is 2001).
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107 */
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108 public static const int DragSetData = 2001;
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109
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110 /**
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111 * DropTarget Event: the cursor has entered the drop target boundaries (value is 2002).
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112 */
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113 public static const int DragEnter = 2002;
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114
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115 /**
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116 * DropTarget Event: the cursor has left the drop target boundaries OR the drop
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117 * operation has been cancelled (such as by hitting ECS) OR the drop is about to
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118 * happen (user has released the mouse button over this target) (value is 2003).
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119 */
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120 public static const int DragLeave = 2003;
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121
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122 /**
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123 * DropTarget Event: the cursor is over the drop target (value is 2004).
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124 */
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125 public static const int DragOver = 2004;
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126
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127 /**
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128 * DropTarget Event: the operation being performed has changed usually due to the user
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129 * changing the selected modifier keys while dragging (value is 2005).
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130 */
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131 public static const int DragOperationChanged = 2005;
0
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132
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133 /**
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134 * DropTarget Event: the data has been dropped (value is 2006).
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135 */
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136 public static const int Drop = 2006;
0
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137
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138 /**
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139 * DropTarget Event: the drop target is given a last chance to modify the drop (value is 2007).
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140 */
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141 public static const int DropAccept = 2007;
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142
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143 /**
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144 * DragSource Event: a drag is about to begin (value is 2008).
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145 */
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146 public static const int DragStart = 2008;
0
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147
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148 /**
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149 * DropTarget drag under effect: No effect is shown (value is 0).
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150 */
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151 public static const int FEEDBACK_NONE = 0;
0
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152
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153 /**
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154 * DropTarget drag under effect: The item under the cursor is selected; applies to tables
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155 * and trees (value is 1).
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156 */
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157 public static const int FEEDBACK_SELECT = 1;
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158
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159 /**
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160 * DropTarget drag under effect: An insertion mark is shown before the item under the cursor; applies to
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161 * trees (value is 2).
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162 */
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163 public static const int FEEDBACK_INSERT_BEFORE = 2;
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164
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165 /**
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166 * DropTarget drag under effect:An insertion mark is shown after the item under the cursor; applies to
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167 * trees (value is 4).
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168 */
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169 public static const int FEEDBACK_INSERT_AFTER = 4;
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170
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171 /**
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172 * DropTarget drag under effect: The widget is scrolled up or down to allow the user to drop on items that
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173 * are not currently visible; applies to tables and trees (value is 8).
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174 */
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175 public static const int FEEDBACK_SCROLL = 8;
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176
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177 /**
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178 * DropTarget drag under effect: The item currently under the cursor is expanded to allow the user to
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179 * select a drop target from a sub item; applies to trees (value is 16).
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180 */
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181 public static const int FEEDBACK_EXPAND = 16;
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182
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183 /**
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184 * Error code: drag source can not be initialized (value is 2000).
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185 */
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186 public static const int ERROR_CANNOT_INIT_DRAG = 2000;
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187
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188 /**
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189 * Error code: drop target cannot be initialized (value is 2001).
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190 */
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191 public static const int ERROR_CANNOT_INIT_DROP = 2001;
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192
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193 /**
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194 * Error code: Data can not be set on system clipboard (value is 2002).
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195 */
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196 public static const int ERROR_CANNOT_SET_CLIPBOARD = 2002;
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197
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198 /**
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199 * Error code: Data does not have correct format for type (value is 2003).
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200 * @since 3.1
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201 */
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202 public static const int ERROR_INVALID_DATA = 2003;
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203
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204 /**
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205 * DropTarget Key: The string constant for looking up the drop target
0
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206 * for a control using <code>getData(String)</code>. When a drop target
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207 * is created for a control, it is stored as a property in the control
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208 * using <code>setData(String, Object)</code>.
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209 *
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210 * @since 3.4
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211 */
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212 public static const String DROP_TARGET_KEY = "DropTarget"; //$NON-NLS-1$
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213
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214 /**
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215 * DragSource Key: The string constant for looking up the drag source
0
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216 * for a control using <code>getData(String)</code>. When a drag source
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217 * is created for a control, it is stored as a property in the control
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218 * using <code>setData(String, Object)</code>.
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219 *
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220 * @since 3.4
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221 */
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222 public static const String DRAG_SOURCE_KEY = "DragSource"; //$NON-NLS-1$
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223
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224 static const String INIT_DRAG_MESSAGE = "Cannot initialize Drag"; //$NON-NLS-1$
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225 static const String INIT_DROP_MESSAGE = "Cannot initialize Drop"; //$NON-NLS-1$
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226 static const String CANNOT_SET_CLIPBOARD_MESSAGE = "Cannot set data in clipboard"; //$NON-NLS-1$
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227 static const String INVALID_DATA_MESSAGE = "Data does not have correct format for type"; //$NON-NLS-1$
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228
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229 /**
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230 * Throws an appropriate exception based on the passed in error code.
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231 *
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232 * @param code the DND error code
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233 */
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234 public static void error (int code) {
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235 error (code, 0);
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236 }
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237
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238 /**
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239 * Throws an appropriate exception based on the passed in error code.
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240 * The <code>hresult</code> argument should be either 0, or the
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241 * platform specific error code.
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242 * <p>
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243 * In DND, errors are reported by throwing one of three exceptions:
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244 * <dl>
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245 * <dd>java.lang.IllegalArgumentException</dd>
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246 * <dt>thrown whenever one of the API methods is invoked with an illegal argument</dt>
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247 * <dd>dwt.DWTException (extends java.lang.RuntimeException)</dd>
0
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248 * <dt>thrown whenever a recoverable error happens internally in DWT</dt>
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249 * <dd>dwt.DWTError (extends java.lang.Error)</dd>
0
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250 * <dt>thrown whenever a <b>non-recoverable</b> error happens internally in DWT</dt>
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251 * </dl>
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252 * This method provides the logic which maps between error codes
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253 * and one of the above exceptions.
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254 * </p>
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255 *
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256 * @param code the DND error code.
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257 * @param hresult the platform specific error code.
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258 *
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259 * @see DWTError
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260 * @see DWTException
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261 * @see IllegalArgumentException
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262 */
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263 public static void error (int code, int hresult) {
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264 switch (code) {
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265 /* OS Failure/Limit (fatal, may occur only on some platforms) */
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266 case DND.ERROR_CANNOT_INIT_DRAG:{
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267 String msg = DND.INIT_DRAG_MESSAGE;
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268 if (hresult !is 0) msg ~= " result = "~Integer.toString(hresult); //$NON-NLS-1$
0
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269 throw new DWTError (code, msg);
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270 }
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271 case DND.ERROR_CANNOT_INIT_DROP:{
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272 String msg = DND.INIT_DROP_MESSAGE;
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273 if (hresult !is 0) msg ~= " result = "~Integer.toString(hresult); //$NON-NLS-1$
0
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274 throw new DWTError (code, msg);
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275 }
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276 case DND.ERROR_CANNOT_SET_CLIPBOARD:{
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277 String msg = DND.CANNOT_SET_CLIPBOARD_MESSAGE;
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278 if (hresult !is 0) msg ~= " result = "~Integer.toString(hresult); //$NON-NLS-1$
0
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279 throw new DWTError (code, msg);
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280 }
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281 case DND.ERROR_INVALID_DATA:{
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282 String msg = DND.INVALID_DATA_MESSAGE;
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283 if (hresult !is 0) msg ~= " result = "~Integer.toString(hresult); //$NON-NLS-1$
0
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284 throw new DWTException (code, msg);
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285 }
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286
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287 default:
0
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288 }
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289
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290 /* Unknown/Undefined Error */
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291 DWT.error(code);
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292 }
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293
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294 }