Mercurial > projects > dwt-mac
annotate dwt/widgets/Link.d @ 123:63a09873578e
Fixed compile errors
author | Jacob Carlborg <doob@me.com> |
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date | Thu, 15 Jan 2009 23:08:54 +0100 |
parents | c7f7f4d7091a |
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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 |
71 | 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.Link; |
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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; |
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20 import dwt.events.SelectionEvent; |
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21 import dwt.events.SelectionListener; |
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22 import dwt.graphics.Point; |
45 | 23 import dwt.internal.cocoa.NSFont; |
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24 import dwt.internal.cocoa.NSRange; |
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25 import dwt.internal.cocoa.NSRect; |
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26 import dwt.internal.cocoa.NSScrollView; |
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27 import dwt.internal.cocoa.NSSize; |
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28 import dwt.internal.cocoa.NSString; |
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29 import dwt.internal.cocoa.NSTextStorage; |
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30 import dwt.internal.cocoa.NSTextView; |
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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.SWTScrollView; |
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34 import dwt.internal.cocoa.SWTTextView; |
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35 |
71 | 36 static import tango.text.Text; |
37 | |
38 import objc = dwt.internal.objc.runtime; | |
90 | 39 import dwt.widgets.Event; |
71 | 40 import dwt.widgets.Composite; |
41 import dwt.widgets.Control; | |
90 | 42 import dwt.widgets.TypedListener; |
71 | 43 |
44 | |
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45 /** |
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46 * Instances of this class represent a selectable |
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47 * user interface object that displays a text with |
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48 * links. |
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49 * <p> |
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50 * <dl> |
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51 * <dt><b>Styles:</b></dt> |
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52 * <dd>(none)</dd> |
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53 * <dt><b>Events:</b></dt> |
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54 * <dd>Selection</dd> |
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55 * </dl> |
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56 * <p> |
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57 * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
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58 * </p> |
45 | 59 * |
60 * @see <a href="http://www.eclipse.org/swt/snippets/#link">Link snippets</a> | |
61 * @see <a href="http://www.eclipse.org/swt/examples.php">DWT Example: ControlExample</a> | |
62 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> | |
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63 * |
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64 * @since 3.1 |
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65 */ |
3 | 66 public class Link : Control { |
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67 NSScrollView scrollView; |
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68 String text; |
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69 Point [] offsets; |
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70 Point selection; |
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71 String [] ids; |
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72 int [] mnemonics; |
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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 Widget#checkSubclass |
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99 * @see Widget#getStyle |
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100 */ |
5 | 101 public this (Composite parent, int style) { |
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102 super (parent, style); |
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103 } |
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104 |
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105 /** |
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106 * Adds the listener to the collection of listeners who will |
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107 * be notified when the control is selected by the user, by sending |
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108 * it one of the messages defined in the <code>SelectionListener</code> |
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109 * interface. |
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110 * <p> |
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111 * <code>widgetSelected</code> is called when the control is selected by the user. |
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112 * <code>widgetDefaultSelected</code> is not called. |
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113 * </p> |
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114 * |
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115 * @param listener the listener which should be notified |
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116 * |
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117 * @exception IllegalArgumentException <ul> |
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118 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
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119 * </ul> |
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120 * @exception DWTException <ul> |
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121 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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122 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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123 * </ul> |
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124 * |
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125 * @see SelectionListener |
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126 * @see #removeSelectionListener |
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127 * @see SelectionEvent |
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128 */ |
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129 public void addSelectionListener (SelectionListener listener) { |
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130 checkWidget (); |
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131 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); |
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132 TypedListener typedListener = new TypedListener (listener); |
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133 addListener (DWT.Selection, typedListener); |
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134 addListener (DWT.DefaultSelection, typedListener); |
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135 } |
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136 |
71 | 137 bool textView_clickOnLink_atIndex(objc.id id, objc.SEL sel, objc.id textView, objc.id link, objc.id charIndex) { |
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138 NSString str = new NSString (link); |
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139 Event event = new Event (); |
45 | 140 event.text = str.getString(); |
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141 sendEvent (DWT.Selection, event); |
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142 return true; |
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143 } |
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144 |
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145 public Point computeSize (int wHint, int hHint, bool changed) { |
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146 checkWidget (); |
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147 if (wHint !is DWT.DEFAULT && wHint < 0) wHint = 0; |
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148 if (hHint !is DWT.DEFAULT && hHint < 0) hHint = 0; |
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149 int width, height; |
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150 //TODO wrapping, wHint |
90 | 151 NSBorderType borderStyle = hasBorder() ? OS.NSBezelBorder : OS.NSNoBorder; |
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152 NSSize borderSize = NSScrollView.frameSizeForContentSize(NSSize(), false, false, borderStyle); |
7 | 153 NSTextView widget = cast(NSTextView)view; |
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154 NSSize size = widget.textStorage().size(); |
7 | 155 width = cast(int)(size.width + borderSize.width); |
156 height = cast(int)(size.height + borderSize.height); | |
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157 if (wHint !is DWT.DEFAULT) width = wHint; |
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158 if (hHint !is DWT.DEFAULT) height = hHint; |
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159 int border = getBorderWidth (); |
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160 width += border * 2; |
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161 height += border * 2; |
123 | 162 |
45 | 163 // TODO is this true? if so, can this rounding be turned off? |
164 /* | |
165 * Bug in Cocoa. NSTextStorage.size() seems to return a width | |
166 * value that is rounded down, because its result is never | |
167 * fractional. The workaround is to increment width by 1 | |
168 * to ensure that it is wide enough to show the full text. | |
169 */ | |
170 width += 1; | |
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171 return new Point (width, height); |
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172 } |
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173 |
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174 void createHandle () { |
45 | 175 NSScrollView scrollWidget = cast(NSScrollView)(new SWTScrollView()).alloc(); |
90 | 176 scrollWidget.initWithFrame(NSRect ()); |
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177 scrollWidget.setDrawsBackground(false); |
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178 scrollWidget.setBorderType(hasBorder() ? OS.NSBezelBorder : OS.NSNoBorder); |
123 | 179 |
71 | 180 NSTextView widget = cast(NSTextView)(new SWTTextView()).alloc(); |
46
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181 widget.initWithFrame(NSRect()); |
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182 widget.setEditable(false); |
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183 widget.setDrawsBackground(false); |
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184 widget.setDelegate(widget); |
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185 widget.setAutoresizingMask (OS.NSViewWidthSizable | OS.NSViewHeightSizable); |
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186 widget.textContainer().setLineFragmentPadding(0); |
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187 |
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188 scrollView = scrollWidget; |
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189 view = widget; |
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190 } |
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191 |
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192 void createWidget () { |
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193 super.createWidget (); |
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194 text = ""; |
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195 } |
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196 |
45 | 197 void deregister () { |
198 super.deregister (); | |
199 if (scrollView !is null) display.removeWidget (scrollView); | |
200 } | |
201 | |
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202 String getNameText () { |
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203 return getText (); |
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204 } |
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205 |
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206 |
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207 /** |
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208 * Returns the receiver's text, which will be an empty |
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209 * string if it has never been set. |
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210 * |
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211 * @return the receiver's text |
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212 * |
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213 * @exception DWTException <ul> |
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214 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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215 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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216 * </ul> |
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217 */ |
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218 public String getText () { |
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219 checkWidget (); |
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220 return text; |
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221 } |
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222 |
45 | 223 void register () { |
224 super.register (); | |
225 if (scrollView !is null) display.addWidget (scrollView, this); | |
226 } | |
227 | |
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228 void releaseWidget () { |
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229 super.releaseWidget (); |
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230 offsets = null; |
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231 ids = null; |
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232 mnemonics = null; |
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233 text = null; |
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234 } |
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235 |
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236 /** |
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237 * Removes the listener from the collection of listeners who will |
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238 * be notified when the control is selected by the user. |
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239 * |
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240 * @param listener the listener which should no longer be notified |
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241 * |
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242 * @exception IllegalArgumentException <ul> |
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243 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
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244 * </ul> |
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245 * @exception DWTException <ul> |
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246 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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247 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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248 * </ul> |
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249 * |
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250 * @see SelectionListener |
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251 * @see #addSelectionListener |
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252 */ |
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253 public void removeSelectionListener (SelectionListener listener) { |
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254 checkWidget (); |
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255 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); |
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256 if (eventTable is null) return; |
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257 eventTable.unhook (DWT.Selection, listener); |
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258 eventTable.unhook (DWT.DefaultSelection, listener); |
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259 } |
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260 |
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261 String parse (String string) { |
71 | 262 int length_ = string.length (); |
263 offsets = new Point [length_ / 4]; | |
264 ids = new String [length_ / 4]; | |
265 mnemonics = new int [length_ / 4 + 1]; | |
77 | 266 StringBuffer result = new StringBuffer (); |
71 | 267 char [] buffer = new char [length_]; |
0
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268 string.getChars (0, string.length (), buffer, 0); |
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269 int index = 0, state = 0, linkIndex = 0; |
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270 int start = 0, tagStart = 0, linkStart = 0, endtagStart = 0, refStart = 0; |
71 | 271 while (index < length_) { |
0
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272 char c = Character.toLowerCase (buffer [index]); |
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273 switch (state) { |
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274 case 0: |
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275 if (c is '<') { |
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276 tagStart = index; |
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277 state++; |
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278 } |
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279 break; |
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280 case 1: |
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281 if (c is 'a') state++; |
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282 break; |
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283 case 2: |
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284 switch (c) { |
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285 case 'h': |
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286 state = 7; |
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287 break; |
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288 case '>': |
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289 linkStart = index + 1; |
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290 state++; |
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291 break; |
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292 default: |
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293 if (Character.isWhitespace(c)) break; |
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294 else state = 13; |
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295 } |
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296 break; |
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297 case 3: |
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298 if (c is '<') { |
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299 endtagStart = index; |
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300 state++; |
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301 } |
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302 break; |
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303 case 4: |
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304 state = c is '/' ? state + 1 : 3; |
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305 break; |
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306 case 5: |
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307 state = c is 'a' ? state + 1 : 3; |
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308 break; |
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309 case 6: |
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310 if (c is '>') { |
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311 mnemonics [linkIndex] = parseMnemonics (buffer, start, tagStart, result); |
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312 int offset = result.length (); |
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313 parseMnemonics (buffer, linkStart, endtagStart, result); |
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314 offsets [linkIndex] = new Point (offset, result.length () - 1); |
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315 if (ids [linkIndex] is null) { |
90 | 316 ids [linkIndex] = new_String (buffer, linkStart, endtagStart - linkStart); |
0
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317 } |
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318 linkIndex++; |
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319 start = tagStart = linkStart = endtagStart = refStart = index + 1; |
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320 state = 0; |
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321 } else { |
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322 state = 3; |
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323 } |
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324 break; |
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325 case 7: |
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326 state = c is 'r' ? state + 1 : 0; |
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327 break; |
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328 case 8: |
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329 state = c is 'e' ? state + 1 : 0; |
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330 break; |
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331 case 9: |
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332 state = c is 'f' ? state + 1 : 0; |
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333 break; |
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334 case 10: |
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335 state = c is '=' ? state + 1 : 0; |
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336 break; |
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337 case 11: |
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338 if (c is '"') { |
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339 state++; |
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340 refStart = index + 1; |
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341 } else { |
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342 state = 0; |
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343 } |
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344 break; |
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345 case 12: |
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346 if (c is '"') { |
90 | 347 ids[linkIndex] = new_String (buffer, refStart, index - refStart); |
0
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348 state = 2; |
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349 } |
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350 break; |
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|
351 case 13: |
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352 if (Character.isWhitespace (c)) { |
380af2bdd8e5
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353 state = 0; |
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354 } else if (c is '='){ |
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355 state++; |
380af2bdd8e5
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parents:
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|
356 } |
380af2bdd8e5
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|
357 break; |
380af2bdd8e5
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|
358 case 14: |
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359 state = c is '"' ? state + 1 : 0; |
380af2bdd8e5
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parents:
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|
360 break; |
380af2bdd8e5
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|
361 case 15: |
380af2bdd8e5
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362 if (c is '"') state = 2; |
380af2bdd8e5
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parents:
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363 break; |
380af2bdd8e5
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parents:
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|
364 default: |
380af2bdd8e5
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parents:
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365 state = 0; |
380af2bdd8e5
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|
366 break; |
380af2bdd8e5
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|
367 } |
380af2bdd8e5
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parents:
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|
368 index++; |
380af2bdd8e5
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parents:
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369 } |
71 | 370 if (start < length_) { |
0
380af2bdd8e5
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|
371 int tmp = parseMnemonics (buffer, start, tagStart, result); |
71 | 372 int mnemonic = parseMnemonics (buffer, Math.max (tagStart, linkStart), length_, result); |
0
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373 if (mnemonic is -1) mnemonic = tmp; |
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374 mnemonics [linkIndex] = mnemonic; |
380af2bdd8e5
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375 } else { |
380af2bdd8e5
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|
376 mnemonics [linkIndex] = -1; |
380af2bdd8e5
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parents:
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|
377 } |
380af2bdd8e5
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parents:
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|
378 if (offsets.length !is linkIndex) { |
380af2bdd8e5
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parents:
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379 Point [] newOffsets = new Point [linkIndex]; |
380af2bdd8e5
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|
380 System.arraycopy (offsets, 0, newOffsets, 0, linkIndex); |
380af2bdd8e5
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381 offsets = newOffsets; |
380af2bdd8e5
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parents:
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382 String [] newIDs = new String [linkIndex]; |
380af2bdd8e5
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parents:
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|
383 System.arraycopy (ids, 0, newIDs, 0, linkIndex); |
380af2bdd8e5
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parents:
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|
384 ids = newIDs; |
380af2bdd8e5
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|
385 int [] newMnemonics = new int [linkIndex + 1]; |
380af2bdd8e5
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parents:
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|
386 System.arraycopy (mnemonics, 0, newMnemonics, 0, linkIndex + 1); |
380af2bdd8e5
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parents:
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|
387 mnemonics = newMnemonics; |
380af2bdd8e5
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parents:
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|
388 } |
380af2bdd8e5
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389 return result.toString (); |
380af2bdd8e5
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parents:
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|
390 } |
380af2bdd8e5
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parents:
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|
391 |
77 | 392 int parseMnemonics (char[] buffer, int start, int end, StringBuffer result) { |
0
380af2bdd8e5
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393 int mnemonic = -1, index = start; |
380af2bdd8e5
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parents:
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|
394 while (index < end) { |
380af2bdd8e5
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parents:
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|
395 if (buffer [index] is '&') { |
380af2bdd8e5
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parents:
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|
396 if (index + 1 < end && buffer [index + 1] is '&') { |
380af2bdd8e5
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parents:
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|
397 result.append (buffer [index]); |
380af2bdd8e5
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parents:
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398 index++; |
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399 } else { |
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400 mnemonic = result.length(); |
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401 } |
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402 } else { |
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403 result.append (buffer [index]); |
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404 } |
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405 index++; |
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406 } |
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407 return mnemonic; |
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408 } |
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409 |
45 | 410 void setFont(NSFont font) { |
71 | 411 (cast(NSTextView) view).setFont(font); |
45 | 412 } |
413 | |
0
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414 /** |
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415 * Sets the receiver's text. |
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416 * <p> |
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417 * The string can contain both regular text and hyperlinks. A hyperlink |
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418 * is delimited by an anchor tag, <A> and </A>. Within an |
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419 * anchor, a single HREF attribute is supported. When a hyperlink is |
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420 * selected, the text field of the selection event contains either the |
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421 * text of the hyperlink or the value of its HREF, if one was specified. |
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422 * In the rare case of identical hyperlinks within the same string, the |
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423 * HREF tag can be used to distinguish between them. The string may |
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424 * include the mnemonic character and line delimiters. |
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425 * </p> |
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426 * |
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427 * @param string the new text |
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428 * |
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429 * @exception IllegalArgumentException <ul> |
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430 * <li>ERROR_NULL_ARGUMENT - if the text is null</li> |
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431 * </ul> |
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432 * @exception DWTException <ul> |
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433 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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434 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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435 * </ul> |
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436 */ |
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437 public void setText (String string) { |
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438 checkWidget (); |
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439 if (string is null) error (DWT.ERROR_NULL_ARGUMENT); |
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440 if (string.equals (text)) return; |
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441 text = string; |
7 | 442 NSTextView widget = cast(NSTextView)view; |
0
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443 widget.setString(NSString.stringWith(parse(string))); |
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444 NSTextStorage textStorage = widget.textStorage(); |
46
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445 NSRange range = NSRange(); |
0
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446 for (int i = 0; i < offsets.length; i++) { |
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447 range.location = offsets[i].x; |
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448 range.length = offsets[i].y - offsets[i].x + 1; |
45 | 449 textStorage.addAttribute(OS.NSLinkAttributeName, NSString.stringWith(ids[i]), range); |
0
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450 } |
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451 } |
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452 |
45 | 453 void setZOrder () { |
454 super.setZOrder (); | |
455 if (scrollView !is null) scrollView.setDocumentView (view); | |
456 } | |
457 | |
0
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458 NSView topView () { |
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459 return scrollView; |
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460 } |
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461 |
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462 //int traversalCode (int key, int theEvent) { |
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463 // if (offsets.length is 0) return 0; |
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464 // int bits = super.traversalCode (key, theEvent); |
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465 // if (key is 48 /* Tab */ && theEvent !is 0) { |
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466 // int [] modifiers = new int [1]; |
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467 // OS.GetEventParameter (theEvent, OS.kEventParamKeyModifiers, OS.typeUInt32, null, 4, null, modifiers); |
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468 // bool next = (modifiers [0] & OS.shiftKey) is 0; |
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469 // if (next && focusIndex < offsets.length - 1) { |
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470 // return bits & ~ DWT.TRAVERSE_TAB_NEXT; |
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471 // } |
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472 // if (!next && focusIndex > 0) { |
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473 // return bits & ~ DWT.TRAVERSE_TAB_PREVIOUS; |
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474 // } |
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475 // } |
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476 // return bits; |
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477 //} |
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478 |
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479 } |