Mercurial > projects > dwt-mac
annotate dwt/widgets/Sash.d @ 74:8e8040261b20
Ported dwt.widgets.Sash
author | Jacob Carlborg <doob@me.com> |
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date | Wed, 24 Dec 2008 12:13:27 +0100 |
parents | cfa563df4fdd |
children | c7f7f4d7091a |
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 |
74 | 10 * |
11 * Port to the D programming language: | |
12 * Jacob Carlborg <doob@me.com> | |
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13 *******************************************************************************/ |
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14 module dwt.widgets.Sash; |
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15 |
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16 import dwt.dwthelper.utils; |
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17 |
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18 import dwt.DWT; |
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19 import dwt.DWTException; |
45 | 20 import dwt.accessibility.ACC; |
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21 import dwt.events.SelectionEvent; |
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22 import dwt.events.SelectionListener; |
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23 import dwt.graphics.Cursor; |
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24 import dwt.graphics.Point; |
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25 import dwt.graphics.Rectangle; |
45 | 26 import dwt.internal.cocoa.NSArray; |
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27 import dwt.internal.cocoa.NSEvent; |
45 | 28 import dwt.internal.cocoa.NSGraphicsContext; |
29 import dwt.internal.cocoa.NSMutableArray; | |
30 import dwt.internal.cocoa.NSNumber; | |
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31 import dwt.internal.cocoa.NSPoint; |
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32 import dwt.internal.cocoa.NSRect; |
45 | 33 import dwt.internal.cocoa.NSString; |
34 import dwt.internal.cocoa.NSView; | |
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35 import dwt.internal.cocoa.OS; |
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36 import dwt.internal.cocoa.SWTView; |
74 | 37 import cocoa = dwt.internal.cocoa.id; |
38 | |
39 import dwt.internal.objc.cocoa.Cocoa; | |
40 import objc = dwt.internal.objc.runtime; | |
41 import dwt.widgets.Composite; | |
42 import dwt.widgets.Control; | |
43 import dwt.widgets.TypedListener; | |
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44 |
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45 /** |
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46 * Instances of the receiver represent a selectable user interface object |
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47 * that allows the user to drag a rubber banded outline of the sash within |
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48 * the parent control. |
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49 * <dl> |
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50 * <dt><b>Styles:</b></dt> |
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51 * <dd>HORIZONTAL, VERTICAL, SMOOTH</dd> |
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52 * <dt><b>Events:</b></dt> |
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53 * <dd>Selection</dd> |
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54 * </dl> |
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55 * <p> |
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56 * Note: Only one of the styles HORIZONTAL and VERTICAL may be specified. |
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57 * </p><p> |
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58 * IMPORTANT: This class is intended to be subclassed <em>only</em> |
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59 * within the DWT implementation. |
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60 * </p> |
45 | 61 * |
62 * @see <a href="http://www.eclipse.org/swt/snippets/#sash">Sash snippets</a> | |
63 * @see <a href="http://www.eclipse.org/swt/examples.php">DWT Example: ControlExample</a> | |
64 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> | |
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65 */ |
3 | 66 public class Sash : Control { |
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67 Cursor sizeCursor; |
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68 bool dragging; |
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69 int lastX, lastY, startX, startY; |
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70 private final static int INCREMENT = 1; |
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71 private final static int PAGE_INCREMENT = 9; |
45 | 72 NSArray accessibilityAttributes = null; |
73 | |
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74 /** |
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75 * Constructs a new instance of this class given its parent |
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76 * and a style value describing its behavior and appearance. |
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77 * <p> |
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78 * The style value is either one of the style constants defined in |
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79 * class <code>DWT</code> which is applicable to instances of this |
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80 * class, or must be built by <em>bitwise OR</em>'ing together |
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81 * (that is, using the <code>int</code> "|" operator) two or more |
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82 * of those <code>DWT</code> style constants. The class description |
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83 * lists the style constants that are applicable to the class. |
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84 * Style bits are also inherited from superclasses. |
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85 * </p> |
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86 * |
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87 * @param parent a composite control which will be the parent of the new instance (cannot be null) |
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88 * @param style the style of control to construct |
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89 * |
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90 * @exception IllegalArgumentException <ul> |
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91 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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92 * </ul> |
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93 * @exception DWTException <ul> |
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94 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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95 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
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96 * </ul> |
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97 * |
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98 * @see DWT#HORIZONTAL |
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99 * @see DWT#VERTICAL |
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100 * @see Widget#checkSubclass |
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101 * @see Widget#getStyle |
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102 */ |
5 | 103 public this (Composite parent, int style) { |
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104 super (parent, checkStyle (style)); |
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105 int cursorStyle = (style & DWT.VERTICAL) !is 0 ? DWT.CURSOR_SIZEWE : DWT.CURSOR_SIZENS; |
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106 sizeCursor = new Cursor (display, cursorStyle); |
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107 } |
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108 |
74 | 109 objc.id accessibilityAttributeNames(objc.id id, objc.SEL sel) { |
45 | 110 if (accessibilityAttributes is null) { |
111 NSMutableArray ourAttributes = NSMutableArray.arrayWithCapacity(10); | |
112 ourAttributes.addObject(OS.NSAccessibilityRoleAttribute); | |
113 ourAttributes.addObject(OS.NSAccessibilityRoleDescriptionAttribute); | |
114 ourAttributes.addObject(OS.NSAccessibilityParentAttribute); | |
115 ourAttributes.addObject(OS.NSAccessibilityPositionAttribute); | |
116 ourAttributes.addObject(OS.NSAccessibilitySizeAttribute); | |
117 ourAttributes.addObject(OS.NSAccessibilityWindowAttribute); | |
118 ourAttributes.addObject(OS.NSAccessibilityTopLevelUIElementAttribute); | |
119 ourAttributes.addObject(OS.NSAccessibilityFocusedAttribute); | |
120 ourAttributes.addObject(OS.NSAccessibilityValueAttribute); | |
121 ourAttributes.addObject(OS.NSAccessibilityMaxValueAttribute); | |
122 ourAttributes.addObject(OS.NSAccessibilityMinValueAttribute); | |
123 // The accessibility documentation says that these next two are optional, but the | |
124 // Accessibility Verifier says they are required. | |
125 ourAttributes.addObject(OS.NSAccessibilityNextContentsAttribute); | |
126 ourAttributes.addObject(OS.NSAccessibilityPreviousContentsAttribute); | |
127 ourAttributes.addObject(OS.NSAccessibilityOrientationAttribute); | |
128 | |
129 if (accessible !is null) { | |
130 // See if the accessible will override or augment the standard list. | |
131 // Help, title, and description can be overridden. | |
132 NSMutableArray extraAttributes = NSMutableArray.arrayWithCapacity(3); | |
133 extraAttributes.addObject(OS.NSAccessibilityHelpAttribute); | |
134 extraAttributes.addObject(OS.NSAccessibilityDescriptionAttribute); | |
135 extraAttributes.addObject(OS.NSAccessibilityTitleAttribute); | |
136 | |
137 for (int i = extraAttributes.count() - 1; i >= 0; i--) { | |
138 NSString attribute = new NSString(extraAttributes.objectAtIndex(i).id); | |
139 if (accessible.internal_accessibilityAttributeValue(attribute, ACC.CHILDID_SELF) !is null) { | |
140 ourAttributes.addObject(extraAttributes.objectAtIndex(i)); | |
141 } | |
142 } | |
143 } | |
144 | |
145 accessibilityAttributes = ourAttributes; | |
146 accessibilityAttributes.retain(); | |
147 } | |
148 | |
149 return accessibilityAttributes.id; | |
150 } | |
151 | |
74 | 152 public objc.id accessibilityAttributeValue(objc.id id, objc.SEL sel, objc.id arg0) { |
153 objc.id returnValue = null; | |
45 | 154 NSString attributeName = new NSString(arg0); |
155 | |
156 if (accessible !is null) { | |
74 | 157 cocoa.id returnObject = accessible.internal_accessibilityAttributeValue(attributeName, ACC.CHILDID_SELF); |
45 | 158 |
159 if (returnObject !is null) returnValue = returnObject.id; | |
160 } | |
161 | |
74 | 162 if (returnValue !is null) return returnValue; |
45 | 163 |
164 if (attributeName.isEqualToString (OS.NSAccessibilityRoleAttribute) || attributeName.isEqualToString (OS.NSAccessibilityRoleDescriptionAttribute)) { | |
165 NSString roleText = OS.NSAccessibilitySplitterRole; | |
166 | |
167 if (attributeName.isEqualToString (OS.NSAccessibilityRoleAttribute)) { | |
168 return roleText.id; | |
169 } else { // NSAccessibilityRoleDescriptionAttribute | |
74 | 170 return OS.NSAccessibilityRoleDescription (roleText.id, null); |
45 | 171 } |
172 } else if (attributeName.isEqualToString (OS.NSAccessibilityEnabledAttribute)) { | |
173 return NSNumber.numberWithBool(isEnabled()).id; | |
174 } else if (attributeName.isEqualToString (OS.NSAccessibilityOrientationAttribute)) { | |
175 NSString orientation = (style & DWT.VERTICAL) !is 0 ? OS.NSAccessibilityVerticalOrientationValue : OS.NSAccessibilityHorizontalOrientationValue; | |
176 return orientation.id; | |
177 } else if (attributeName.isEqualToString (OS.NSAccessibilityValueAttribute)) { | |
178 Point location = getLocation(); | |
179 int value = (style & DWT.VERTICAL) !is 0 ? location.x : location.y; | |
180 return NSNumber.numberWithInt(value).id; | |
181 } else if (attributeName.isEqualToString (OS.NSAccessibilityMaxValueAttribute)) { | |
182 NSRect parentBounds = view.bounds(); | |
183 float maxValue = (style & DWT.VERTICAL) !is 0 ? | |
184 parentBounds.width : | |
185 parentBounds.height; | |
74 | 186 return NSNumber.numberWithInt(cast(int)maxValue).id; |
45 | 187 } else if (attributeName.isEqualToString (OS.NSAccessibilityMinValueAttribute)) { |
188 return NSNumber.numberWithInt(0).id; | |
189 } else if (attributeName.isEqualToString (OS.NSAccessibilityNextContentsAttribute)) { | |
190 Control[] children = parent._getChildren(); | |
191 Control nextView = null; | |
192 for (int i = 0; i < children.length; i++) { | |
193 if (children[i] is this) { | |
194 if (i < children.length - 1) { | |
195 nextView = children[i + 1]; | |
196 break; | |
197 } | |
198 } | |
199 } | |
200 | |
201 if (nextView !is null) | |
202 return NSArray.arrayWithObject(nextView.view).id; | |
203 else | |
204 return NSArray.array().id; | |
205 } else if (attributeName.isEqualToString (OS.NSAccessibilityPreviousContentsAttribute)) { | |
206 Control[] children = parent._getChildren(); | |
207 Control nextView = null; | |
208 for (int i = 0; i < children.length; i++) { | |
209 if (children[i] is this) { | |
210 if (i > 0) { | |
211 nextView = children[i - 1]; | |
212 break; | |
213 } | |
214 } | |
215 } | |
216 | |
217 if (nextView !is null) | |
218 return NSArray.arrayWithObject(nextView.view).id; | |
219 else | |
220 return NSArray.array().id; | |
221 } | |
222 | |
223 return super.accessibilityAttributeValue(id, sel, arg0); | |
224 } | |
225 | |
74 | 226 bool accessibilityIsIgnored(objc.id id, objc.SEL sel) { |
45 | 227 return false; |
228 } | |
229 | |
0
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230 /** |
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231 * Adds the listener to the collection of listeners who will |
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232 * be notified when the control is selected by the user, by sending |
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233 * it one of the messages defined in the <code>SelectionListener</code> |
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234 * interface. |
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235 * <p> |
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236 * When <code>widgetSelected</code> is called, the x, y, width, and height fields of the event object are valid. |
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237 * If the receiver is being dragged, the event object detail field contains the value <code>DWT.DRAG</code>. |
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238 * <code>widgetDefaultSelected</code> is not called. |
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239 * </p> |
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240 * |
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241 * @param listener the listener which should be notified when the control is selected by the user |
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242 * |
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243 * @exception IllegalArgumentException <ul> |
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244 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
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245 * </ul> |
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246 * @exception DWTException <ul> |
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247 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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248 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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249 * </ul> |
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250 * |
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251 * @see SelectionListener |
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252 * @see #removeSelectionListener |
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253 * @see SelectionEvent |
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254 */ |
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255 public void addSelectionListener(SelectionListener listener) { |
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256 checkWidget(); |
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257 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); |
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258 TypedListener typedListener = new TypedListener(listener); |
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259 addListener(DWT.Selection,typedListener); |
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260 addListener(DWT.DefaultSelection,typedListener); |
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261 } |
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262 |
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263 static int checkStyle (int style) { |
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264 /* |
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265 * Macintosh only supports smooth dragging. |
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266 */ |
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267 style |= DWT.SMOOTH; |
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268 return checkBits (style, DWT.HORIZONTAL, DWT.VERTICAL, 0, 0, 0, 0); |
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269 } |
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270 |
74 | 271 bool becomeFirstResponder (objc.id id, objc.SEL sel) { |
45 | 272 bool result = super.becomeFirstResponder(id, sel); |
0
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273 NSRect frame = view.frame(); |
7 | 274 lastX = cast(int)frame.x; |
275 lastY = cast(int)frame.y; | |
0
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276 return result; |
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277 } |
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278 |
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279 public Point computeSize (int wHint, int hHint, bool changed) { |
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280 checkWidget(); |
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281 int width = 0, height = 0; |
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282 if ((style & DWT.HORIZONTAL) !is 0) { |
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283 width += DEFAULT_WIDTH; height += 5; |
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284 } else { |
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285 width += 5; height += DEFAULT_HEIGHT; |
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286 } |
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287 if (wHint !is DWT.DEFAULT) width = wHint; |
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288 if (hHint !is DWT.DEFAULT) height = hHint; |
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289 return new Point (width, height); |
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290 } |
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291 |
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292 void createHandle () { |
74 | 293 NSView widget = cast(NSView)(new SWTView()).alloc(); |
46
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294 widget.initWithFrame (NSRect()); |
0
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295 view = widget; |
45 | 296 } |
297 | |
74 | 298 void drawWidget (objc.id id, NSRect rect) { |
45 | 299 NSGraphicsContext context = NSGraphicsContext.currentContext(); |
300 fillBackground (view, context, rect); | |
301 super.drawWidget (id, rect); | |
302 } | |
303 | |
304 Cursor findCursor () { | |
305 Cursor cursor = super.findCursor (); | |
306 if (cursor is null) { | |
307 int cursorType = (style & DWT.HORIZONTAL) !is 0 ? DWT.CURSOR_SIZENS : DWT.CURSOR_SIZEWE; | |
308 cursor = display.getSystemCursor (cursorType); | |
309 } | |
310 return cursor; | |
0
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311 } |
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312 |
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313 bool sendKeyEvent(NSEvent nsEvent, int type) { |
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314 //TODO consumed |
74 | 315 ushort keyCode = nsEvent.keyCode(); |
0
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316 switch (keyCode) { |
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317 case 126: /* Up arrow */ |
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318 case 123: /* Left arrow */ |
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319 case 125: /* Down arrow */ |
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320 case 124: /* Right arrow */ { |
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321 int xChange = 0, yChange = 0; |
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322 int stepSize = PAGE_INCREMENT; |
74 | 323 NSUInteger modifiers = nsEvent.modifierFlags(); |
0
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324 if ((modifiers & OS.NSControlKeyMask) !is 0) stepSize = INCREMENT; |
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325 if ((style & DWT.VERTICAL) !is 0) { |
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326 if (keyCode is 126 || keyCode is 125) break; |
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327 xChange = keyCode is 123 ? -stepSize : stepSize; |
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328 } else { |
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329 if (keyCode is 123 || keyCode is 124) break; |
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330 yChange = keyCode is 126 ? -stepSize : stepSize; |
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331 } |
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332 |
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333 Rectangle bounds = getBounds (); |
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334 int width = bounds.width, height = bounds.height; |
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335 Rectangle parentBounds = parent.getBounds (); |
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336 int parentWidth = parentBounds.width; |
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337 int parentHeight = parentBounds.height; |
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338 int newX = lastX, newY = lastY; |
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339 if ((style & DWT.VERTICAL) !is 0) { |
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340 newX = Math.min (Math.max (0, lastX + xChange), parentWidth - width); |
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341 } else { |
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342 newY = Math.min (Math.max (0, lastY + yChange), parentHeight - height); |
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343 } |
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344 if (newX is lastX && newY is lastY) return true; |
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345 Event event = new Event (); |
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346 event.x = newX; |
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347 event.y = newY; |
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348 event.width = width; |
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349 event.height = height; |
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350 sendEvent (DWT.Selection, event); |
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351 if (isDisposed ()) break; |
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352 if (event.doit) { |
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353 setBounds (event.x, event.y, width, height); |
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354 if (isDisposed ()) break; |
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355 lastX = event.x; |
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356 lastY = event.y; |
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357 if (isDisposed ()) return false; |
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358 int cursorX = event.x, cursorY = event.y; |
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359 if ((style & DWT.VERTICAL) !is 0) { |
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360 cursorY += height / 2; |
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361 } else { |
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362 cursorX += width / 2; |
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363 } |
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364 display.setCursorLocation (parent.toDisplay (cursorX, cursorY)); |
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365 } |
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366 break; |
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367 } |
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368 } |
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369 return true; |
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370 } |
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371 |
74 | 372 void mouseDown(objc.id id, objc.SEL sel, objc.id theEvent) { |
45 | 373 //TODO use sendMouseEvent |
374 // super.mouseDown(id, sel, theEvent); | |
0
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375 NSEvent nsEvent = new NSEvent(theEvent); |
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376 if (nsEvent.clickCount() !is 1) return; |
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377 NSPoint location = nsEvent.locationInWindow(); |
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378 NSPoint point = view.convertPoint_fromView_(location, null); |
7 | 379 startX = cast(int)point.x; |
380 startY = cast(int)point.y; | |
0
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381 NSRect frame = view.frame(); |
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382 Event event = new Event (); |
7 | 383 event.x = cast(int)frame.x; |
384 event.y = cast(int)frame.y; | |
385 event.width = cast(int)frame.width; | |
386 event.height = cast(int)frame.height; | |
0
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387 sendEvent (DWT.Selection, event); |
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388 if (isDisposed ()) return; |
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389 if (event.doit) { |
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390 lastX = event.x; |
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391 lastY = event.y; |
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392 dragging = true; |
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393 setLocation(event.x, event.y); |
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394 } |
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395 } |
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396 |
74 | 397 void mouseDragged(objc.id id, objc.SEL sel, objc.id theEvent) { |
45 | 398 //TODO use sendMouseEvent |
399 // super.mouseDragged(id, sel, theEvent); | |
0
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400 if (!dragging) return; |
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401 NSEvent nsEvent = new NSEvent(theEvent); |
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402 NSPoint location = nsEvent.locationInWindow(); |
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403 NSPoint point = view.convertPoint_fromView_(location, null); |
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404 NSRect frame = view.frame(); |
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405 NSRect parentFrame = parent.topView().frame(); |
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406 int newX = lastX, newY = lastY; |
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407 if ((style & DWT.VERTICAL) !is 0) { |
7 | 408 newX = Math.min (Math.max (0, cast(int)(point.x + frame.x - startX)), cast(int)(parentFrame.width - frame.width)); |
0
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409 } else { |
7 | 410 newY = Math.min (Math.max (0, cast(int)(point.y + frame.y - startY)), cast(int)(parentFrame.height - frame.height)); |
0
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411 } |
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412 if (newX is lastX && newY is lastY) return; |
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413 Event event = new Event (); |
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414 event.x = newX; |
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415 event.y = newY; |
7 | 416 event.width = cast(int)frame.width; |
417 event.height = cast(int)frame.height; | |
0
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418 sendEvent (DWT.Selection, event); |
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419 if (isDisposed ()) return; |
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420 if (event.doit) { |
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421 lastX = event.x; |
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422 lastY = event.y; |
7 | 423 setBounds (event.x, event.y, cast(int)frame.width, cast(int)frame.height); |
0
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424 } |
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425 } |
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426 |
74 | 427 void mouseUp(objc.id id, objc.SEL sel, objc.id theEvent) { |
45 | 428 //TODO use sendMouseEvent |
429 // super.mouseUp(id, sel, theEvent); | |
0
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430 if (!dragging) return; |
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431 dragging = false; |
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432 NSRect frame = view.frame(); |
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433 Event event = new Event (); |
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434 event.x = lastX; |
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435 event.y = lastY; |
7 | 436 event.width = cast(int)frame.width; |
437 event.height = cast(int)frame.height; | |
0
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438 sendEvent (DWT.Selection, event); |
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439 if (isDisposed ()) return; |
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440 if (event.doit) { |
7 | 441 setBounds (event.x, event.y, cast(int)frame.width, cast(int)frame.height); |
0
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442 } |
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443 } |
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444 |
45 | 445 void releaseHandle () { |
446 super.releaseHandle (); | |
447 if (accessibilityAttributes !is null) accessibilityAttributes.release(); | |
448 accessibilityAttributes = null; | |
449 } | |
450 | |
0
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451 void releaseWidget () { |
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452 super.releaseWidget (); |
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453 if (sizeCursor !is null) sizeCursor.dispose (); |
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454 sizeCursor = null; |
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455 } |
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456 |
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457 /** |
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458 * Removes the listener from the collection of listeners who will |
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459 * be notified when the control is selected by the user. |
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460 * |
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461 * @param listener the listener which should no longer be notified |
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462 * |
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463 * @exception IllegalArgumentException <ul> |
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464 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
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465 * </ul> |
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466 * @exception DWTException <ul> |
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467 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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468 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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469 * </ul> |
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470 * |
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471 * @see SelectionListener |
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472 * @see #addSelectionListener |
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473 */ |
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474 public void removeSelectionListener(SelectionListener listener) { |
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475 checkWidget(); |
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476 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); |
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477 if (eventTable is null) return; |
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478 eventTable.unhook(DWT.Selection, listener); |
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479 eventTable.unhook(DWT.DefaultSelection,listener); |
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480 } |
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481 |
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482 int traversalCode (int key, NSEvent theEvent) { |
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483 return 0; |
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484 } |
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485 |
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486 } |