Mercurial > projects > dwt-mac
annotate dwt/widgets/Sash.d @ 46:cfa563df4fdd
Updated Widget and Display to 3.514
author | Jacob Carlborg <doob@me.com> |
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date | Fri, 05 Dec 2008 16:00:41 +0100 |
parents | d8635bb48c7c |
children | 8e8040261b20 |
rev | line source |
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45 | 1 /******************************************************************************* |
2 * Copyright (c) 2000, 2008 IBM Corporation and others. | |
0
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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 module dwt.widgets.Sash; |
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12 |
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13 import dwt.dwthelper.utils; |
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14 |
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15 import dwt.DWT; |
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16 import dwt.DWTException; |
45 | 17 import dwt.accessibility.ACC; |
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18 import dwt.events.SelectionEvent; |
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19 import dwt.events.SelectionListener; |
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20 import dwt.graphics.Cursor; |
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21 import dwt.graphics.Point; |
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22 import dwt.graphics.Rectangle; |
45 | 23 import dwt.internal.cocoa.NSArray; |
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24 import dwt.internal.cocoa.NSEvent; |
45 | 25 import dwt.internal.cocoa.NSGraphicsContext; |
26 import dwt.internal.cocoa.NSMutableArray; | |
27 import dwt.internal.cocoa.NSNumber; | |
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28 import dwt.internal.cocoa.NSPoint; |
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29 import dwt.internal.cocoa.NSRect; |
45 | 30 import dwt.internal.cocoa.NSString; |
31 import dwt.internal.cocoa.NSView; | |
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32 import dwt.internal.cocoa.OS; |
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33 import dwt.internal.cocoa.SWTView; |
45 | 34 import dwt.internal.cocoa.id; |
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35 |
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36 /** |
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37 * Instances of the receiver represent a selectable user interface object |
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38 * that allows the user to drag a rubber banded outline of the sash within |
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39 * the parent control. |
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40 * <dl> |
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41 * <dt><b>Styles:</b></dt> |
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42 * <dd>HORIZONTAL, VERTICAL, SMOOTH</dd> |
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43 * <dt><b>Events:</b></dt> |
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44 * <dd>Selection</dd> |
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45 * </dl> |
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46 * <p> |
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47 * Note: Only one of the styles HORIZONTAL and VERTICAL may be specified. |
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48 * </p><p> |
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49 * IMPORTANT: This class is intended to be subclassed <em>only</em> |
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50 * within the DWT implementation. |
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51 * </p> |
45 | 52 * |
53 * @see <a href="http://www.eclipse.org/swt/snippets/#sash">Sash snippets</a> | |
54 * @see <a href="http://www.eclipse.org/swt/examples.php">DWT Example: ControlExample</a> | |
55 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> | |
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56 */ |
3 | 57 public class Sash : Control { |
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58 Cursor sizeCursor; |
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59 bool dragging; |
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60 int lastX, lastY, startX, startY; |
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61 private final static int INCREMENT = 1; |
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62 private final static int PAGE_INCREMENT = 9; |
45 | 63 NSArray accessibilityAttributes = null; |
64 | |
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65 /** |
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66 * Constructs a new instance of this class given its parent |
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67 * and a style value describing its behavior and appearance. |
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68 * <p> |
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69 * The style value is either one of the style constants defined in |
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70 * class <code>DWT</code> which is applicable to instances of this |
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71 * class, or must be built by <em>bitwise OR</em>'ing together |
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72 * (that is, using the <code>int</code> "|" operator) two or more |
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73 * of those <code>DWT</code> style constants. The class description |
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74 * lists the style constants that are applicable to the class. |
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75 * Style bits are also inherited from superclasses. |
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76 * </p> |
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77 * |
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78 * @param parent a composite control which will be the parent of the new instance (cannot be null) |
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79 * @param style the style of control to construct |
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80 * |
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81 * @exception IllegalArgumentException <ul> |
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82 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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83 * </ul> |
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84 * @exception DWTException <ul> |
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85 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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86 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
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87 * </ul> |
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88 * |
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89 * @see DWT#HORIZONTAL |
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90 * @see DWT#VERTICAL |
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91 * @see Widget#checkSubclass |
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92 * @see Widget#getStyle |
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93 */ |
5 | 94 public this (Composite parent, int style) { |
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95 super (parent, checkStyle (style)); |
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96 int cursorStyle = (style & DWT.VERTICAL) !is 0 ? DWT.CURSOR_SIZEWE : DWT.CURSOR_SIZENS; |
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97 sizeCursor = new Cursor (display, cursorStyle); |
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98 } |
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99 |
45 | 100 int accessibilityAttributeNames(int /*long*/ id, int /*long*/ sel) { |
101 if (accessibilityAttributes is null) { | |
102 NSMutableArray ourAttributes = NSMutableArray.arrayWithCapacity(10); | |
103 ourAttributes.addObject(OS.NSAccessibilityRoleAttribute); | |
104 ourAttributes.addObject(OS.NSAccessibilityRoleDescriptionAttribute); | |
105 ourAttributes.addObject(OS.NSAccessibilityParentAttribute); | |
106 ourAttributes.addObject(OS.NSAccessibilityPositionAttribute); | |
107 ourAttributes.addObject(OS.NSAccessibilitySizeAttribute); | |
108 ourAttributes.addObject(OS.NSAccessibilityWindowAttribute); | |
109 ourAttributes.addObject(OS.NSAccessibilityTopLevelUIElementAttribute); | |
110 ourAttributes.addObject(OS.NSAccessibilityFocusedAttribute); | |
111 ourAttributes.addObject(OS.NSAccessibilityValueAttribute); | |
112 ourAttributes.addObject(OS.NSAccessibilityMaxValueAttribute); | |
113 ourAttributes.addObject(OS.NSAccessibilityMinValueAttribute); | |
114 // The accessibility documentation says that these next two are optional, but the | |
115 // Accessibility Verifier says they are required. | |
116 ourAttributes.addObject(OS.NSAccessibilityNextContentsAttribute); | |
117 ourAttributes.addObject(OS.NSAccessibilityPreviousContentsAttribute); | |
118 ourAttributes.addObject(OS.NSAccessibilityOrientationAttribute); | |
119 | |
120 if (accessible !is null) { | |
121 // See if the accessible will override or augment the standard list. | |
122 // Help, title, and description can be overridden. | |
123 NSMutableArray extraAttributes = NSMutableArray.arrayWithCapacity(3); | |
124 extraAttributes.addObject(OS.NSAccessibilityHelpAttribute); | |
125 extraAttributes.addObject(OS.NSAccessibilityDescriptionAttribute); | |
126 extraAttributes.addObject(OS.NSAccessibilityTitleAttribute); | |
127 | |
128 for (int i = extraAttributes.count() - 1; i >= 0; i--) { | |
129 NSString attribute = new NSString(extraAttributes.objectAtIndex(i).id); | |
130 if (accessible.internal_accessibilityAttributeValue(attribute, ACC.CHILDID_SELF) !is null) { | |
131 ourAttributes.addObject(extraAttributes.objectAtIndex(i)); | |
132 } | |
133 } | |
134 } | |
135 | |
136 accessibilityAttributes = ourAttributes; | |
137 accessibilityAttributes.retain(); | |
138 } | |
139 | |
140 return accessibilityAttributes.id; | |
141 } | |
142 | |
143 public int accessibilityAttributeValue(int /*long*/ id, int /*long*/ sel, int /*long*/ arg0) { | |
144 int returnValue = 0; | |
145 NSString attributeName = new NSString(arg0); | |
146 | |
147 if (accessible !is null) { | |
148 id returnObject = accessible.internal_accessibilityAttributeValue(attributeName, ACC.CHILDID_SELF); | |
149 | |
150 if (returnObject !is null) returnValue = returnObject.id; | |
151 } | |
152 | |
153 if (returnValue !is 0) return returnValue; | |
154 | |
155 if (attributeName.isEqualToString (OS.NSAccessibilityRoleAttribute) || attributeName.isEqualToString (OS.NSAccessibilityRoleDescriptionAttribute)) { | |
156 NSString roleText = OS.NSAccessibilitySplitterRole; | |
157 | |
158 if (attributeName.isEqualToString (OS.NSAccessibilityRoleAttribute)) { | |
159 return roleText.id; | |
160 } else { // NSAccessibilityRoleDescriptionAttribute | |
161 return OS.NSAccessibilityRoleDescription (roleText.id, 0); | |
162 } | |
163 } else if (attributeName.isEqualToString (OS.NSAccessibilityEnabledAttribute)) { | |
164 return NSNumber.numberWithBool(isEnabled()).id; | |
165 } else if (attributeName.isEqualToString (OS.NSAccessibilityOrientationAttribute)) { | |
166 NSString orientation = (style & DWT.VERTICAL) !is 0 ? OS.NSAccessibilityVerticalOrientationValue : OS.NSAccessibilityHorizontalOrientationValue; | |
167 return orientation.id; | |
168 } else if (attributeName.isEqualToString (OS.NSAccessibilityValueAttribute)) { | |
169 Point location = getLocation(); | |
170 int value = (style & DWT.VERTICAL) !is 0 ? location.x : location.y; | |
171 return NSNumber.numberWithInt(value).id; | |
172 } else if (attributeName.isEqualToString (OS.NSAccessibilityMaxValueAttribute)) { | |
173 NSRect parentBounds = view.bounds(); | |
174 float maxValue = (style & DWT.VERTICAL) !is 0 ? | |
175 parentBounds.width : | |
176 parentBounds.height; | |
177 return NSNumber.numberWithInt((int)maxValue).id; | |
178 } else if (attributeName.isEqualToString (OS.NSAccessibilityMinValueAttribute)) { | |
179 return NSNumber.numberWithInt(0).id; | |
180 } else if (attributeName.isEqualToString (OS.NSAccessibilityNextContentsAttribute)) { | |
181 Control[] children = parent._getChildren(); | |
182 Control nextView = null; | |
183 for (int i = 0; i < children.length; i++) { | |
184 if (children[i] is this) { | |
185 if (i < children.length - 1) { | |
186 nextView = children[i + 1]; | |
187 break; | |
188 } | |
189 } | |
190 } | |
191 | |
192 if (nextView !is null) | |
193 return NSArray.arrayWithObject(nextView.view).id; | |
194 else | |
195 return NSArray.array().id; | |
196 } else if (attributeName.isEqualToString (OS.NSAccessibilityPreviousContentsAttribute)) { | |
197 Control[] children = parent._getChildren(); | |
198 Control nextView = null; | |
199 for (int i = 0; i < children.length; i++) { | |
200 if (children[i] is this) { | |
201 if (i > 0) { | |
202 nextView = children[i - 1]; | |
203 break; | |
204 } | |
205 } | |
206 } | |
207 | |
208 if (nextView !is null) | |
209 return NSArray.arrayWithObject(nextView.view).id; | |
210 else | |
211 return NSArray.array().id; | |
212 } | |
213 | |
214 return super.accessibilityAttributeValue(id, sel, arg0); | |
215 } | |
216 | |
217 bool accessibilityIsIgnored(int /*long*/ id, int /*long*/ sel) { | |
218 return false; | |
219 } | |
220 | |
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221 /** |
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222 * Adds the listener to the collection of listeners who will |
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223 * be notified when the control is selected by the user, by sending |
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224 * it one of the messages defined in the <code>SelectionListener</code> |
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225 * interface. |
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226 * <p> |
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227 * When <code>widgetSelected</code> is called, the x, y, width, and height fields of the event object are valid. |
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228 * If the receiver is being dragged, the event object detail field contains the value <code>DWT.DRAG</code>. |
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229 * <code>widgetDefaultSelected</code> is not called. |
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230 * </p> |
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231 * |
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232 * @param listener the listener which should be notified when the control is selected by the user |
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233 * |
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234 * @exception IllegalArgumentException <ul> |
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235 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
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236 * </ul> |
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237 * @exception DWTException <ul> |
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238 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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239 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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240 * </ul> |
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241 * |
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242 * @see SelectionListener |
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243 * @see #removeSelectionListener |
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244 * @see SelectionEvent |
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245 */ |
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246 public void addSelectionListener(SelectionListener listener) { |
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247 checkWidget(); |
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248 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); |
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249 TypedListener typedListener = new TypedListener(listener); |
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250 addListener(DWT.Selection,typedListener); |
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251 addListener(DWT.DefaultSelection,typedListener); |
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252 } |
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253 |
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254 static int checkStyle (int style) { |
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255 /* |
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256 * Macintosh only supports smooth dragging. |
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257 */ |
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258 style |= DWT.SMOOTH; |
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259 return checkBits (style, DWT.HORIZONTAL, DWT.VERTICAL, 0, 0, 0, 0); |
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260 } |
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261 |
45 | 262 bool becomeFirstResponder (int /*long*/ id, int /*long*/ sel) { |
263 bool result = super.becomeFirstResponder(id, sel); | |
0
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264 NSRect frame = view.frame(); |
7 | 265 lastX = cast(int)frame.x; |
266 lastY = cast(int)frame.y; | |
0
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267 return result; |
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268 } |
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269 |
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270 public Point computeSize (int wHint, int hHint, bool changed) { |
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271 checkWidget(); |
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272 int width = 0, height = 0; |
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273 if ((style & DWT.HORIZONTAL) !is 0) { |
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274 width += DEFAULT_WIDTH; height += 5; |
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275 } else { |
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276 width += 5; height += DEFAULT_HEIGHT; |
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277 } |
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278 if (wHint !is DWT.DEFAULT) width = wHint; |
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279 if (hHint !is DWT.DEFAULT) height = hHint; |
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280 return new Point (width, height); |
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281 } |
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282 |
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283 void createHandle () { |
45 | 284 NSView widget = cast(NSView)new SWTView().alloc(); |
46
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285 widget.initWithFrame (NSRect()); |
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286 view = widget; |
45 | 287 } |
288 | |
289 void drawWidget (int /*long*/ id, NSRect rect) { | |
290 NSGraphicsContext context = NSGraphicsContext.currentContext(); | |
291 fillBackground (view, context, rect); | |
292 super.drawWidget (id, rect); | |
293 } | |
294 | |
295 Cursor findCursor () { | |
296 Cursor cursor = super.findCursor (); | |
297 if (cursor is null) { | |
298 int cursorType = (style & DWT.HORIZONTAL) !is 0 ? DWT.CURSOR_SIZENS : DWT.CURSOR_SIZEWE; | |
299 cursor = display.getSystemCursor (cursorType); | |
300 } | |
301 return cursor; | |
0
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302 } |
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303 |
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304 bool sendKeyEvent(NSEvent nsEvent, int type) { |
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305 //TODO consumed |
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306 int keyCode = nsEvent.keyCode(); |
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307 switch (keyCode) { |
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308 case 126: /* Up arrow */ |
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309 case 123: /* Left arrow */ |
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310 case 125: /* Down arrow */ |
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311 case 124: /* Right arrow */ { |
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312 int xChange = 0, yChange = 0; |
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313 int stepSize = PAGE_INCREMENT; |
45 | 314 int /*long*/ modifiers = nsEvent.modifierFlags(); |
0
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315 if ((modifiers & OS.NSControlKeyMask) !is 0) stepSize = INCREMENT; |
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316 if ((style & DWT.VERTICAL) !is 0) { |
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317 if (keyCode is 126 || keyCode is 125) break; |
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318 xChange = keyCode is 123 ? -stepSize : stepSize; |
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319 } else { |
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320 if (keyCode is 123 || keyCode is 124) break; |
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321 yChange = keyCode is 126 ? -stepSize : stepSize; |
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322 } |
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323 |
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324 Rectangle bounds = getBounds (); |
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325 int width = bounds.width, height = bounds.height; |
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326 Rectangle parentBounds = parent.getBounds (); |
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327 int parentWidth = parentBounds.width; |
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328 int parentHeight = parentBounds.height; |
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329 int newX = lastX, newY = lastY; |
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330 if ((style & DWT.VERTICAL) !is 0) { |
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331 newX = Math.min (Math.max (0, lastX + xChange), parentWidth - width); |
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332 } else { |
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333 newY = Math.min (Math.max (0, lastY + yChange), parentHeight - height); |
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334 } |
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335 if (newX is lastX && newY is lastY) return true; |
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336 Event event = new Event (); |
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337 event.x = newX; |
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338 event.y = newY; |
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339 event.width = width; |
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340 event.height = height; |
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341 sendEvent (DWT.Selection, event); |
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342 if (isDisposed ()) break; |
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343 if (event.doit) { |
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344 setBounds (event.x, event.y, width, height); |
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345 if (isDisposed ()) break; |
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346 lastX = event.x; |
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347 lastY = event.y; |
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348 if (isDisposed ()) return false; |
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349 int cursorX = event.x, cursorY = event.y; |
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350 if ((style & DWT.VERTICAL) !is 0) { |
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351 cursorY += height / 2; |
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352 } else { |
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353 cursorX += width / 2; |
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354 } |
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355 display.setCursorLocation (parent.toDisplay (cursorX, cursorY)); |
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356 } |
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357 break; |
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358 } |
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359 } |
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360 return true; |
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361 } |
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362 |
45 | 363 void mouseDown(int /*long*/ id, int /*long*/ sel, int /*long*/ theEvent) { |
364 //TODO use sendMouseEvent | |
365 // super.mouseDown(id, sel, theEvent); | |
0
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366 NSEvent nsEvent = new NSEvent(theEvent); |
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367 if (nsEvent.clickCount() !is 1) return; |
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368 NSPoint location = nsEvent.locationInWindow(); |
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369 NSPoint point = view.convertPoint_fromView_(location, null); |
7 | 370 startX = cast(int)point.x; |
371 startY = cast(int)point.y; | |
0
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372 NSRect frame = view.frame(); |
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373 Event event = new Event (); |
7 | 374 event.x = cast(int)frame.x; |
375 event.y = cast(int)frame.y; | |
376 event.width = cast(int)frame.width; | |
377 event.height = cast(int)frame.height; | |
0
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378 sendEvent (DWT.Selection, event); |
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379 if (isDisposed ()) return; |
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380 if (event.doit) { |
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381 lastX = event.x; |
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382 lastY = event.y; |
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383 dragging = true; |
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384 setLocation(event.x, event.y); |
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385 } |
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386 } |
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387 |
45 | 388 void mouseDragged(int /*long*/ id, int /*long*/ sel, int /*long*/ theEvent) { |
389 //TODO use sendMouseEvent | |
390 // super.mouseDragged(id, sel, theEvent); | |
0
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391 if (!dragging) return; |
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392 NSEvent nsEvent = new NSEvent(theEvent); |
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393 NSPoint location = nsEvent.locationInWindow(); |
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394 NSPoint point = view.convertPoint_fromView_(location, null); |
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395 NSRect frame = view.frame(); |
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396 NSRect parentFrame = parent.topView().frame(); |
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397 int newX = lastX, newY = lastY; |
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398 if ((style & DWT.VERTICAL) !is 0) { |
7 | 399 newX = Math.min (Math.max (0, cast(int)(point.x + frame.x - startX)), cast(int)(parentFrame.width - frame.width)); |
0
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400 } else { |
7 | 401 newY = Math.min (Math.max (0, cast(int)(point.y + frame.y - startY)), cast(int)(parentFrame.height - frame.height)); |
0
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402 } |
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403 if (newX is lastX && newY is lastY) return; |
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404 Event event = new Event (); |
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405 event.x = newX; |
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406 event.y = newY; |
7 | 407 event.width = cast(int)frame.width; |
408 event.height = cast(int)frame.height; | |
0
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409 sendEvent (DWT.Selection, event); |
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410 if (isDisposed ()) return; |
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411 if (event.doit) { |
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412 lastX = event.x; |
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413 lastY = event.y; |
7 | 414 setBounds (event.x, event.y, cast(int)frame.width, cast(int)frame.height); |
0
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415 } |
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416 } |
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417 |
45 | 418 void mouseUp(int /*long*/ id, int /*long*/ sel, int /*long*/ theEvent) { |
419 //TODO use sendMouseEvent | |
420 // super.mouseUp(id, sel, theEvent); | |
0
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421 if (!dragging) return; |
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422 dragging = false; |
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423 NSRect frame = view.frame(); |
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424 Event event = new Event (); |
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425 event.x = lastX; |
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426 event.y = lastY; |
7 | 427 event.width = cast(int)frame.width; |
428 event.height = cast(int)frame.height; | |
0
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429 sendEvent (DWT.Selection, event); |
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430 if (isDisposed ()) return; |
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431 if (event.doit) { |
7 | 432 setBounds (event.x, event.y, cast(int)frame.width, cast(int)frame.height); |
0
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433 } |
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434 } |
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435 |
45 | 436 void releaseHandle () { |
437 super.releaseHandle (); | |
438 if (accessibilityAttributes !is null) accessibilityAttributes.release(); | |
439 accessibilityAttributes = null; | |
440 } | |
441 | |
0
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442 void releaseWidget () { |
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443 super.releaseWidget (); |
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444 if (sizeCursor !is null) sizeCursor.dispose (); |
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445 sizeCursor = null; |
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446 } |
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447 |
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448 /** |
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449 * Removes the listener from the collection of listeners who will |
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450 * be notified when the control is selected by the user. |
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451 * |
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452 * @param listener the listener which should no longer be notified |
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453 * |
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454 * @exception IllegalArgumentException <ul> |
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455 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
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456 * </ul> |
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457 * @exception DWTException <ul> |
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458 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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459 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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460 * </ul> |
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461 * |
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462 * @see SelectionListener |
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463 * @see #addSelectionListener |
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464 */ |
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465 public void removeSelectionListener(SelectionListener listener) { |
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466 checkWidget(); |
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467 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); |
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468 if (eventTable is null) return; |
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469 eventTable.unhook(DWT.Selection, listener); |
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470 eventTable.unhook(DWT.DefaultSelection,listener); |
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471 } |
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472 |
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473 int traversalCode (int key, NSEvent theEvent) { |
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474 return 0; |
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475 } |
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476 |
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477 } |