Mercurial > projects > dwt-mac
annotate dwt/widgets/Label.d @ 156:969e7de37c3d default tip
Fixes to get dwt to work with dmd and ldc
author | Jacob Carlborg <doob@me.com> |
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date | Wed, 08 Jul 2009 21:56:44 +0200 |
parents | 38807a925e24 |
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rev | line source |
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45 | 1 /******************************************************************************* |
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 |
70 | 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.Label; |
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15 |
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16 import dwt.dwthelper.utils; |
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17 |
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18 |
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19 import dwt.DWT; |
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20 import dwt.DWTException; |
45 | 21 import dwt.accessibility.ACC; |
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22 import dwt.graphics.Image; |
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23 import dwt.graphics.Point; |
45 | 24 import dwt.internal.cocoa.NSArray; |
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25 import dwt.internal.cocoa.NSAttributedString; |
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26 import dwt.internal.cocoa.NSBox; |
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27 import dwt.internal.cocoa.NSCell; |
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28 import dwt.internal.cocoa.NSColor; |
45 | 29 import dwt.internal.cocoa.NSFont; |
30 import dwt.internal.cocoa.NSImage; | |
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31 import dwt.internal.cocoa.NSImageView; |
45 | 32 import dwt.internal.cocoa.NSMutableArray; |
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33 import dwt.internal.cocoa.NSMutableDictionary; |
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34 import dwt.internal.cocoa.NSRect; |
45 | 35 import dwt.internal.cocoa.NSSize; |
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36 import dwt.internal.cocoa.NSString; |
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37 import dwt.internal.cocoa.NSTextField; |
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38 import dwt.internal.cocoa.NSTextFieldCell; |
45 | 39 import dwt.internal.cocoa.NSView; |
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40 import dwt.internal.cocoa.OS; |
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41 import dwt.internal.cocoa.SWTBox; |
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42 import dwt.internal.cocoa.SWTImageView; |
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43 import dwt.internal.cocoa.SWTTextField; |
70 | 44 import cocoa = dwt.internal.cocoa.id; |
45 | |
90 | 46 import Carbon = dwt.internal.c.Carbon; |
70 | 47 import objc = dwt.internal.objc.runtime; |
48 import dwt.widgets.Composite; | |
49 import dwt.widgets.Control; | |
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50 |
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51 /** |
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52 * Instances of this class represent a non-selectable |
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53 * user interface object that displays a string or image. |
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54 * When SEPARATOR is specified, displays a single |
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55 * vertical or horizontal line. |
45 | 56 * <p> |
57 * Shadow styles are hints and may not be honoured | |
58 * by the platform. To create a separator label | |
59 * with the default shadow style for the platform, | |
60 * do not specify a shadow style. | |
61 * </p> | |
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62 * <dl> |
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63 * <dt><b>Styles:</b></dt> |
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64 * <dd>SEPARATOR, HORIZONTAL, VERTICAL</dd> |
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65 * <dd>SHADOW_IN, SHADOW_OUT, SHADOW_NONE</dd> |
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66 * <dd>CENTER, LEFT, RIGHT, WRAP</dd> |
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67 * <dt><b>Events:</b></dt> |
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68 * <dd>(none)</dd> |
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69 * </dl> |
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70 * <p> |
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71 * Note: Only one of SHADOW_IN, SHADOW_OUT and SHADOW_NONE may be specified. |
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72 * SHADOW_NONE is a HINT. Only one of HORIZONTAL and VERTICAL may be specified. |
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73 * Only one of CENTER, LEFT and RIGHT may be specified. |
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74 * </p><p> |
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75 * IMPORTANT: This class is intended to be subclassed <em>only</em> |
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76 * within the DWT implementation. |
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77 * </p> |
45 | 78 * |
79 * @see <a href="http://www.eclipse.org/swt/snippets/#label">Label snippets</a> | |
80 * @see <a href="http://www.eclipse.org/swt/examples.php">DWT Example: ControlExample</a> | |
81 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> | |
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82 */ |
3 | 83 public class Label : Control { |
126
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84 |
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85 alias Control.computeSize computeSize; |
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86 alias Control.setBounds setBounds; |
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87 alias Control.setBackground setBackground; |
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88 alias Control.setForeground setForeground; |
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89 |
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90 String text = ""; |
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91 Image image; |
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92 bool isImage; |
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93 NSTextField textView; |
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94 NSImageView imageView; |
123 | 95 |
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96 /** |
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97 * Constructs a new instance of this class given its parent |
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98 * and a style value describing its behavior and appearance. |
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99 * <p> |
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100 * The style value is either one of the style constants defined in |
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101 * class <code>DWT</code> which is applicable to instances of this |
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102 * class, or must be built by <em>bitwise OR</em>'ing together |
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103 * (that is, using the <code>int</code> "|" operator) two or more |
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104 * of those <code>DWT</code> style constants. The class description |
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105 * lists the style constants that are applicable to the class. |
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106 * Style bits are also inherited from superclasses. |
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107 * </p> |
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108 * |
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109 * @param parent a composite control which will be the parent of the new instance (cannot be null) |
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110 * @param style the style of control to construct |
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111 * |
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112 * @exception IllegalArgumentException <ul> |
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113 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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114 * </ul> |
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115 * @exception DWTException <ul> |
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116 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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117 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
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118 * </ul> |
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119 * |
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120 * @see DWT#SEPARATOR |
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121 * @see DWT#HORIZONTAL |
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122 * @see DWT#VERTICAL |
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123 * @see DWT#SHADOW_IN |
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124 * @see DWT#SHADOW_OUT |
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125 * @see DWT#SHADOW_NONE |
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126 * @see DWT#CENTER |
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127 * @see DWT#LEFT |
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128 * @see DWT#RIGHT |
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129 * @see DWT#WRAP |
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130 * @see Widget#checkSubclass |
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131 * @see Widget#getStyle |
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132 */ |
5 | 133 public this (Composite parent, int style) { |
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134 super (parent, checkStyle (style)); |
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135 } |
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136 |
70 | 137 objc.id accessibilityAttributeNames(objc.id id, objc.SEL sel) { |
45 | 138 |
139 if (accessible !is null) { | |
140 if ((textView !is null && (id is textView.id || id is textView.cell().id)) || (imageView !is null && (id is imageView.id || id is imageView.cell().id))) { | |
141 // See if the accessible will override or augment the standard list. | |
142 // Help, title, and description can be overridden. | |
143 NSMutableArray extraAttributes = NSMutableArray.arrayWithCapacity(3); | |
144 extraAttributes.addObject(OS.NSAccessibilityHelpAttribute); | |
145 extraAttributes.addObject(OS.NSAccessibilityDescriptionAttribute); | |
146 extraAttributes.addObject(OS.NSAccessibilityTitleAttribute); | |
123 | 147 |
45 | 148 for (int i = extraAttributes.count() - 1; i >= 0; i--) { |
149 NSString attribute = new NSString(extraAttributes.objectAtIndex(i).id); | |
150 if (accessible.internal_accessibilityAttributeValue(attribute, ACC.CHILDID_SELF) is null) { | |
151 extraAttributes.removeObjectAtIndex(i); | |
152 } | |
153 } | |
123 | 154 |
45 | 155 if (extraAttributes.count() > 0) { |
70 | 156 objc.id superResult = super.accessibilityAttributeNames(id, sel); |
45 | 157 NSArray baseAttributes = new NSArray(superResult); |
158 NSMutableArray mutableAttributes = NSMutableArray.arrayWithCapacity(baseAttributes.count() + 1); | |
159 mutableAttributes.addObjectsFromArray(baseAttributes); | |
160 | |
161 for (int i = 0; i < extraAttributes.count(); i++) { | |
70 | 162 cocoa.id currAttribute = extraAttributes.objectAtIndex(i); |
45 | 163 if (!mutableAttributes.containsObject(currAttribute)) { |
164 mutableAttributes.addObject(currAttribute); | |
165 } | |
166 } | |
167 | |
168 return mutableAttributes.id; | |
169 } | |
170 } | |
171 } | |
123 | 172 |
45 | 173 return super.accessibilityAttributeNames(id, sel); |
174 } | |
175 | |
70 | 176 bool accessibilityIsIgnored(objc.id id, objc.SEL sel) { |
45 | 177 if (id is view.id) return true; |
178 return super.accessibilityIsIgnored(id, sel); | |
179 } | |
180 | |
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181 static int checkStyle (int style) { |
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182 style |= DWT.NO_FOCUS; |
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183 if ((style & DWT.SEPARATOR) !is 0) { |
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184 style = checkBits (style, DWT.VERTICAL, DWT.HORIZONTAL, 0, 0, 0, 0); |
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185 return checkBits (style, DWT.SHADOW_OUT, DWT.SHADOW_IN, DWT.SHADOW_NONE, 0, 0, 0); |
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186 } |
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187 return checkBits (style, DWT.LEFT, DWT.CENTER, DWT.RIGHT, 0, 0, 0); |
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188 } |
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189 |
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190 public Point computeSize (int wHint, int hHint, bool changed) { |
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191 checkWidget(); |
45 | 192 NSRect oldRect = view.frame (); |
193 int width = DEFAULT_WIDTH; | |
194 int height = DEFAULT_HEIGHT; | |
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195 if ((style & DWT.SEPARATOR) !is 0) { |
70 | 196 (cast(NSBox) view).sizeToFit (); |
45 | 197 NSRect newRect = view.frame (); |
70 | 198 width = cast(int) newRect.width; |
199 height = cast(int) newRect.height; | |
45 | 200 view.setFrame (oldRect); |
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201 } else { |
45 | 202 if (isImage) { |
203 if (image !is null) { | |
204 NSImage nsimage = image.handle; | |
205 NSSize size = nsimage.size (); | |
70 | 206 width = cast(int)size.width; |
207 height = cast(int)size.height; | |
45 | 208 } else { |
209 width = height = 0; | |
210 } | |
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211 } else { |
70 | 212 NSRect rect = NSRect (); |
45 | 213 rect.width = wHint !is DWT.DEFAULT ? wHint : Float.MAX_VALUE; |
214 rect.height = hHint !is DWT.DEFAULT ? hHint : Float.MAX_VALUE; | |
215 NSSize size = textView.cell ().cellSizeForBounds (rect); | |
216 width = cast(int)Math.ceil (size.width); | |
217 height = cast(int)Math.ceil (size.height); | |
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218 } |
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219 } |
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220 if (wHint !is DWT.DEFAULT) width = wHint; |
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221 if (hHint !is DWT.DEFAULT) height = hHint; |
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222 return new Point (width, height); |
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223 } |
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224 |
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225 void createHandle () { |
45 | 226 NSBox widget = cast(NSBox)(new SWTBox()).alloc(); |
46
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227 widget.initWithFrame(NSRect()); |
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228 widget.setTitle(NSString.stringWith("")); |
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229 if ((style & DWT.SEPARATOR) !is 0) { |
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230 widget.setBoxType(OS.NSBoxSeparator); |
70 | 231 NSView child = cast(NSView) (new NSView()).alloc().init().autorelease(); |
45 | 232 widget.setContentView(child); |
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233 } else { |
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234 widget.setBorderType(OS.NSNoBorder); |
45 | 235 widget.setBorderWidth (0); |
236 widget.setBoxType (OS.NSBoxCustom); | |
70 | 237 NSSize offsetSize = NSSize (); |
45 | 238 widget.setContentViewMargins (offsetSize); |
123 | 239 |
70 | 240 NSImageView imageWidget = cast(NSImageView) (new SWTImageView ()).alloc (); |
241 imageWidget.initWithFrame(NSRect ()); | |
45 | 242 imageWidget.setImageScaling (OS.NSScaleNone); |
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243 |
45 | 244 NSTextField textWidget = cast(NSTextField)(new SWTTextField()).alloc(); |
46
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245 textWidget.initWithFrame(NSRect()); |
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246 textWidget.setBordered(false); |
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247 textWidget.setEditable(false); |
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248 textWidget.setDrawsBackground(false); |
45 | 249 NSTextFieldCell cell = new NSTextFieldCell(textWidget.cell()); |
250 cell.setWraps ((style & DWT.WRAP) !is 0); | |
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251 |
45 | 252 widget.addSubview(imageWidget); |
253 widget.addSubview(textWidget); | |
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254 widget.setContentView(textWidget); |
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255 |
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256 imageView = imageWidget; |
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257 textView = textWidget; |
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258 _setAlignment(); |
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259 } |
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260 view = widget; |
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261 } |
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262 |
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263 NSAttributedString createString() { |
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264 NSMutableDictionary dict = NSMutableDictionary.dictionaryWithCapacity(4); |
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265 if (foreground !is null) { |
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266 NSColor color = NSColor.colorWithDeviceRed(foreground.handle[0], foreground.handle[1], foreground.handle[2], 1); |
45 | 267 dict.setObject(color, OS.NSForegroundColorAttributeName); |
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268 } |
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269 if (font !is null) { |
45 | 270 dict.setObject(font.handle, OS.NSFontAttributeName); |
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271 } |
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272 char [] chars = new char [text.length ()]; |
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273 text.getChars (0, chars.length, chars, 0); |
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274 int length = fixMnemonic (chars); |
123 | 275 |
70 | 276 NSString str = NSString.stringWithCharacters(chars.toString16().ptr, length); |
277 NSAttributedString attribStr = (cast(NSAttributedString)(new NSAttributedString()).alloc()).initWithString(str, dict); | |
0
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278 attribStr.autorelease(); |
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279 return attribStr; |
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280 } |
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281 |
45 | 282 void deregister () { |
283 super.deregister (); | |
284 if (textView !is null) { | |
285 display.removeWidget(textView); | |
286 display.removeWidget(textView.cell()); | |
287 } | |
288 if (imageView !is null) { | |
289 display.removeWidget (imageView); | |
290 display.removeWidget (imageView.cell()); | |
291 } | |
292 } | |
293 | |
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294 /** |
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295 * Returns a value which describes the position of the |
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296 * text or image in the receiver. The value will be one of |
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297 * <code>LEFT</code>, <code>RIGHT</code> or <code>CENTER</code> |
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298 * unless the receiver is a <code>SEPARATOR</code> label, in |
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299 * which case, <code>NONE</code> is returned. |
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300 * |
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301 * @return the alignment |
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302 * |
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303 * @exception DWTException <ul> |
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304 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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305 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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306 * </ul> |
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307 */ |
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308 public int getAlignment () { |
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309 checkWidget(); |
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310 if ((style & DWT.SEPARATOR) !is 0) return DWT.LEFT; |
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311 if ((style & DWT.CENTER) !is 0) return DWT.CENTER; |
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312 if ((style & DWT.RIGHT) !is 0) return DWT.RIGHT; |
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313 return DWT.LEFT; |
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314 } |
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315 |
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316 /** |
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317 * Returns the receiver's image if it has one, or null |
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318 * if it does not. |
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319 * |
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320 * @return the receiver's image |
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321 * |
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322 * @exception DWTException <ul> |
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323 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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324 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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325 * </ul> |
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326 */ |
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327 public Image getImage () { |
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328 checkWidget(); |
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329 return image; |
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330 } |
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331 |
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332 String getNameText () { |
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333 return getText (); |
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334 } |
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335 |
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336 /** |
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337 * Returns the receiver's text, which will be an empty |
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338 * string if it has never been set or if the receiver is |
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339 * a <code>SEPARATOR</code> label. |
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340 * |
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341 * @return the receiver's text |
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342 * |
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343 * @exception DWTException <ul> |
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344 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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345 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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346 * </ul> |
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347 */ |
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348 public String getText () { |
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349 checkWidget(); |
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350 if ((style & DWT.SEPARATOR) !is 0) return ""; |
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351 return text; |
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352 } |
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353 |
45 | 354 void register () { |
355 super.register (); | |
356 if (textView !is null) { | |
357 display.addWidget (textView, this); | |
358 display.addWidget (textView.cell(), this); | |
359 } | |
360 if (imageView !is null) { | |
361 display.addWidget (imageView, this); | |
362 display.addWidget (imageView.cell(), this); | |
363 } | |
364 } | |
365 | |
366 void releaseHandle () { | |
367 super.releaseHandle (); | |
368 if (textView !is null) textView.release(); | |
369 if (imageView !is null) imageView.release(); | |
370 textView = null; | |
371 imageView = null; | |
372 } | |
373 | |
0
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374 /** |
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375 * Controls how text and images will be displayed in the receiver. |
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376 * The argument should be one of <code>LEFT</code>, <code>RIGHT</code> |
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377 * or <code>CENTER</code>. If the receiver is a <code>SEPARATOR</code> |
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378 * label, the argument is ignored and the alignment is not changed. |
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379 * |
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380 * @param alignment the new alignment |
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381 * |
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382 * @exception DWTException <ul> |
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383 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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384 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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385 * </ul> |
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386 */ |
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387 public void setAlignment (int alignment) { |
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388 checkWidget(); |
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389 if ((style & DWT.SEPARATOR) !is 0) return; |
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390 if ((alignment & (DWT.LEFT | DWT.RIGHT | DWT.CENTER)) is 0) return; |
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391 style &= ~(DWT.LEFT | DWT.RIGHT | DWT.CENTER); |
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392 style |= alignment & (DWT.LEFT | DWT.RIGHT | DWT.CENTER); |
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393 _setAlignment(); |
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394 } |
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395 |
90 | 396 void setBackground (Carbon.CGFloat [] color) { |
0
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397 if ((style & DWT.SEPARATOR) !is 0) return; |
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398 textView.setDrawsBackground(color !is null); |
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399 if (color is null) return; |
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400 NSColor nsColor = NSColor.colorWithDeviceRed(color[0], color[1], color[2], 1); |
70 | 401 (cast(NSTextField)textView).setBackgroundColor(nsColor); |
0
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402 } |
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403 |
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404 void _setAlignment() { |
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405 if ((style & DWT.RIGHT) !is 0) { |
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406 textView.setAlignment(OS.NSRightTextAlignment); |
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407 imageView.setImageAlignment(OS.NSImageAlignRight); |
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408 } |
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409 if ((style & DWT.LEFT) !is 0) { |
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410 textView.setAlignment(OS.NSLeftTextAlignment); |
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411 imageView.setImageAlignment(OS.NSImageAlignLeft); |
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412 } |
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413 if ((style & DWT.CENTER) !is 0) { |
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414 textView.setAlignment(OS.NSCenterTextAlignment); |
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415 imageView.setImageAlignment(OS.NSImageAlignCenter); |
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416 } |
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417 } |
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418 |
45 | 419 void setFont(NSFont font) { |
420 if (textView !is null) { | |
421 NSCell cell = new NSCell(textView.cell()); | |
422 cell.setAttributedStringValue(createString()); | |
0
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423 } |
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424 } |
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425 |
90 | 426 void setForeground (Carbon.CGFloat [] color) { |
0
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427 if ((style & DWT.SEPARATOR) !is 0) return; |
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428 NSCell cell = new NSCell(textView.cell()); |
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429 cell.setAttributedStringValue(createString()); |
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430 } |
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431 |
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432 bool setTabItemFocus () { |
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433 return false; |
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434 } |
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435 |
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436 /** |
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437 * Sets the receiver's image to the argument, which may be |
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438 * null indicating that no image should be displayed. |
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439 * |
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440 * @param image the image to display on the receiver (may be null) |
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441 * |
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442 * @exception IllegalArgumentException <ul> |
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443 * <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li> |
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444 * </ul> |
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445 * @exception DWTException <ul> |
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446 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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447 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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448 * </ul> |
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449 */ |
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450 public void setImage (Image image) { |
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451 checkWidget(); |
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452 if ((style & DWT.SEPARATOR) !is 0) return; |
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453 if (image !is null && image.isDisposed ()) { |
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454 error (DWT.ERROR_INVALID_ARGUMENT); |
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455 } |
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456 this.image = image; |
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457 isImage = true; |
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458 imageView.setImage(image !is null ? image.handle : null); |
7 | 459 (cast(NSBox)view).setContentView(imageView); |
0
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460 } |
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461 |
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462 /** |
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463 * Sets the receiver's text. |
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464 * <p> |
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465 * This method sets the widget label. The label may include |
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466 * the mnemonic character and line delimiters. |
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467 * </p> |
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468 * <p> |
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469 * Mnemonics are indicated by an '&' that causes the next |
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470 * character to be the mnemonic. When the user presses a |
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471 * key sequence that matches the mnemonic, focus is assigned |
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472 * to the control that follows the label. On most platforms, |
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473 * the mnemonic appears underlined but may be emphasised in a |
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474 * platform specific manner. The mnemonic indicator character |
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475 * '&' can be escaped by doubling it in the string, causing |
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476 * a single '&' to be displayed. |
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477 * </p> |
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478 * |
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479 * @param string the new text |
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480 * |
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481 * @exception IllegalArgumentException <ul> |
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482 * <li>ERROR_NULL_ARGUMENT - if the text is null</li> |
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483 * </ul> |
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484 * @exception DWTException <ul> |
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485 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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486 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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487 * </ul> |
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488 */ |
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489 public void setText (String string) { |
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490 checkWidget(); |
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491 if (string is null) error (DWT.ERROR_NULL_ARGUMENT); |
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492 if ((style & DWT.SEPARATOR) !is 0) return; |
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493 isImage = false; |
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494 text = string; |
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495 NSCell cell = new NSCell(textView.cell()); |
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496 cell.setAttributedStringValue(createString()); |
7 | 497 (cast(NSBox)view).setContentView(textView); |
0
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498 } |
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499 |
45 | 500 |
0
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501 } |