Mercurial > projects > dwt-mac
annotate dwt/widgets/Spinner.d @ 5:1a8b3cb347e0
Fix Ctors to 'this'
author | Frank Benoit <benoit@tionex.de> |
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date | Wed, 27 Aug 2008 14:02:31 +0200 |
parents | 649b8e223d5a |
children | e831403a80a9 |
rev | line source |
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0
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1 /******************************************************************************* |
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2 * Copyright (c) 2000, 2007 IBM Corporation and others. |
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3 * All rights reserved. This program and the accompanying materials |
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4 * are made available under the terms of the Eclipse Public License v1.0 |
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5 * which accompanies this distribution, and is available at |
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6 * http://www.eclipse.org/legal/epl-v10.html |
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7 * |
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8 * Contributors: |
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9 * IBM Corporation - initial API and implementation |
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10 *******************************************************************************/ |
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11 module dwt.widgets.Spinner; |
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12 |
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13 import dwt.dwthelper.utils; |
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14 |
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15 import dwt.DWT; |
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16 import dwt.DWTException; |
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17 import dwt.events.ModifyListener; |
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18 import dwt.events.SelectionEvent; |
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19 import dwt.events.SelectionListener; |
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20 import dwt.events.VerifyListener; |
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21 import dwt.graphics.Point; |
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22 import dwt.graphics.Rectangle; |
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23 import dwt.internal.cocoa.NSAttributedString; |
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24 import dwt.internal.cocoa.NSCell; |
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25 import dwt.internal.cocoa.NSMutableDictionary; |
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26 import dwt.internal.cocoa.NSRect; |
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27 import dwt.internal.cocoa.NSSize; |
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28 import dwt.internal.cocoa.NSStepper; |
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29 import dwt.internal.cocoa.NSString; |
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30 import dwt.internal.cocoa.NSTextField; |
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31 import dwt.internal.cocoa.OS; |
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32 import dwt.internal.cocoa.SWTStepper; |
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33 import dwt.internal.cocoa.SWTTextField; |
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34 import dwt.internal.cocoa.SWTView; |
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35 |
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36 /** |
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37 * Instances of this class are selectable user interface |
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38 * objects that allow the user to enter and modify numeric |
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39 * values. |
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40 * <p> |
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41 * Note that although this class is a subclass of <code>Composite</code>, |
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42 * it does not make sense to add children to it, or set a layout on it. |
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43 * </p><p> |
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44 * <dl> |
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45 * <dt><b>Styles:</b></dt> |
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46 * <dd>READ_ONLY, WRAP</dd> |
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47 * <dt><b>Events:</b></dt> |
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48 * <dd>Selection, Modify, Verify</dd> |
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49 * </dl> |
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50 * </p><p> |
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51 * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
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52 * </p> |
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53 * |
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54 * @since 3.1 |
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55 */ |
3 | 56 public class Spinner : Composite { |
0
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57 NSTextField textView; |
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58 NSStepper buttonView; |
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59 int pageIncrement = 10; |
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60 int digits = 0; |
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61 |
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62 static int GAP = 0; |
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63 |
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64 /** |
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65 * Constructs a new instance of this class given its parent |
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66 * and a style value describing its behavior and appearance. |
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67 * <p> |
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68 * The style value is either one of the style constants defined in |
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69 * class <code>DWT</code> which is applicable to instances of this |
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70 * class, or must be built by <em>bitwise OR</em>'ing together |
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71 * (that is, using the <code>int</code> "|" operator) two or more |
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72 * of those <code>DWT</code> style constants. The class description |
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73 * lists the style constants that are applicable to the class. |
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74 * Style bits are also inherited from superclasses. |
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75 * </p> |
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76 * |
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77 * @param parent a composite control which will be the parent of the new instance (cannot be null) |
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78 * @param style the style of control to construct |
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79 * |
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80 * @exception IllegalArgumentException <ul> |
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81 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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82 * </ul> |
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83 * @exception DWTException <ul> |
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84 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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85 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
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86 * </ul> |
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87 * |
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88 * @see DWT#READ_ONLY |
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89 * @see DWT#WRAP |
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90 * @see Widget#checkSubclass |
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91 * @see Widget#getStyle |
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92 */ |
5 | 93 public this (Composite parent, int style) { |
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94 super (parent, checkStyle (style)); |
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95 } |
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96 |
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97 /** |
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98 * Adds the listener to the collection of listeners who will |
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99 * be notified when the receiver's text is modified, by sending |
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100 * it one of the messages defined in the <code>ModifyListener</code> |
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101 * interface. |
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102 * |
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103 * @param listener the listener which should be notified |
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104 * |
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105 * @exception IllegalArgumentException <ul> |
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106 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
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107 * </ul> |
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108 * @exception DWTException <ul> |
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109 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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110 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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111 * </ul> |
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112 * |
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113 * @see ModifyListener |
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114 * @see #removeModifyListener |
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115 */ |
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116 public void addModifyListener (ModifyListener listener) { |
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117 checkWidget (); |
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118 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); |
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119 TypedListener typedListener = new TypedListener (listener); |
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120 addListener (DWT.Modify, typedListener); |
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121 } |
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122 |
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123 /** |
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124 * Adds the listener to the collection of listeners who will |
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125 * be notified when the control is selected by the user, by sending |
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126 * it one of the messages defined in the <code>SelectionListener</code> |
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127 * interface. |
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128 * <p> |
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129 * <code>widgetSelected</code> is not called for texts. |
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130 * <code>widgetDefaultSelected</code> is typically called when ENTER is pressed in a single-line text. |
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131 * </p> |
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132 * |
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133 * @param listener the listener which should be notified when the control is selected by the user |
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134 * |
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135 * @exception IllegalArgumentException <ul> |
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136 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
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137 * </ul> |
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138 * @exception DWTException <ul> |
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139 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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140 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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141 * </ul> |
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142 * |
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143 * @see SelectionListener |
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144 * @see #removeSelectionListener |
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145 * @see SelectionEvent |
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146 */ |
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147 public void addSelectionListener(SelectionListener listener) { |
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148 checkWidget (); |
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149 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); |
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150 TypedListener typedListener = new TypedListener(listener); |
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151 addListener (DWT.Selection,typedListener); |
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152 addListener (DWT.DefaultSelection,typedListener); |
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153 } |
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154 |
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155 /** |
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156 * Adds the listener to the collection of listeners who will |
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157 * be notified when the receiver's text is verified, by sending |
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158 * it one of the messages defined in the <code>VerifyListener</code> |
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159 * interface. |
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160 * |
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161 * @param listener the listener which should be notified |
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162 * |
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163 * @exception IllegalArgumentException <ul> |
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164 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
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165 * </ul> |
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166 * @exception DWTException <ul> |
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167 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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168 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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169 * </ul> |
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170 * |
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171 * @see VerifyListener |
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172 * @see #removeVerifyListener |
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173 */ |
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174 void addVerifyListener (VerifyListener listener) { |
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175 checkWidget(); |
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176 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); |
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177 TypedListener typedListener = new TypedListener (listener); |
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178 addListener (DWT.Verify, typedListener); |
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179 } |
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180 |
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181 static int checkStyle (int style) { |
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182 /* |
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183 * Even though it is legal to create this widget |
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184 * with scroll bars, they serve no useful purpose |
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185 * because they do not automatically scroll the |
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186 * widget's client area. The fix is to clear |
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187 * the DWT style. |
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188 */ |
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189 return style & ~(DWT.H_SCROLL | DWT.V_SCROLL); |
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190 } |
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191 |
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192 protected void checkSubclass () { |
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193 if (!isValidSubclass ()) error (DWT.ERROR_INVALID_SUBCLASS); |
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194 } |
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195 |
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196 public Point computeSize (int wHint, int hHint, bool changed) { |
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197 checkWidget (); |
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198 float width = 0, height = 0; |
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199 String string = Double.toString (buttonView.maxValue ()); |
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200 NSMutableDictionary dict = NSMutableDictionary.dictionaryWithCapacity (1); |
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201 dict.setObject(textView.font (), OS.NSFontAttributeName ()); |
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202 int length = string.length (); |
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203 char [] chars = new char [length]; |
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204 string.getChars (0, length, chars, 0); |
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205 NSString nsString = NSString.stringWithCharacters (chars, length); |
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206 NSAttributedString str = ((NSAttributedString) new NSAttributedString ().alloc ()).initWithString_attributes_ (nsString, dict); |
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207 NSSize size = str.size (); |
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208 str.release (); |
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209 width = size.width; |
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210 height = size.height; |
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211 NSRect frameRect = textView.frame(); |
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212 NSCell cell = new NSCell (textView.cell ()); |
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213 NSRect cellRect = cell.drawingRectForBounds(frameRect); |
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214 width += frameRect.width - cellRect.width; |
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215 height += frameRect.height - cellRect.height; |
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216 width += GAP; |
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217 NSRect oldRect = buttonView.frame (); |
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218 buttonView.sizeToFit(); |
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219 NSRect newRect = buttonView.frame (); |
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220 buttonView.setFrame (oldRect); |
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221 width += newRect.width; |
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222 height = Math.max (height, newRect.height); |
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223 if (wHint !is DWT.DEFAULT) width = wHint; |
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224 if (hHint !is DWT.DEFAULT) height = hHint; |
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225 Rectangle trim = computeTrim (0, 0, (int) width, (int) height); |
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226 return new Point (trim.width, trim.height); |
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227 } |
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228 |
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229 /** |
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230 * Copies the selected text. |
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231 * <p> |
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232 * The current selection is copied to the clipboard. |
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233 * </p> |
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234 * |
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235 * @exception DWTException <ul> |
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236 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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237 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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238 * </ul> |
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239 */ |
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240 public void copy () { |
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241 checkWidget (); |
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242 // short [] selection = new short [2]; |
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243 // if (OS.GetControlData (textHandle, (short)OS.kControlEntireControl, OS.kControlEditTextSelectionTag, 4, selection, null) !is OS.noErr) return; |
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244 // if (selection [0] is selection [1]) return; |
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245 // int [] actualSize = new int [1]; |
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246 // int [] ptr = new int [1]; |
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247 // if (OS.GetControlData (textHandle, (short)OS.kControlEntireControl, OS.kControlEditTextCFStringTag, 4, ptr, actualSize) !is OS.noErr) return; |
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248 // CFRange range = new CFRange (); |
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249 // range.location = selection [0]; |
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250 // range.length = selection [1] - selection [0]; |
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251 // char [] buffer= new char [range.length]; |
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252 // OS.CFStringGetCharacters (ptr [0], range, buffer); |
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253 // OS.CFRelease (ptr [0]); |
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254 // copyToClipboard (buffer); |
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255 } |
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256 |
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257 void createHandle () { |
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258 SWTView widget = (SWTView)new SWTView().alloc(); |
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259 widget.initWithFrame(new NSRect()); |
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260 // widget.setDrawsBackground(false); |
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261 widget.setTag(jniRef); |
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262 NSStepper buttonWidget = (NSStepper)new SWTStepper().alloc(); |
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263 buttonWidget.initWithFrame(new NSRect()); |
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264 buttonWidget.setValueWraps((style & DWT.WRAP) !is 0); |
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265 buttonWidget.setTarget(buttonWidget); |
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266 buttonWidget.setAction(OS.sel_sendSelection); |
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267 buttonWidget.setTag(jniRef); |
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268 NSTextField textWidget = (NSTextField)new SWTTextField().alloc(); |
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269 textWidget.initWithFrame(new NSRect()); |
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270 // textWidget.setTarget(widget); |
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271 textWidget.setTag(jniRef); |
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272 textWidget.setEditable((style & DWT.READ_ONLY) is 0); |
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273 widget.addSubview_(textWidget); |
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274 widget.addSubview_(buttonWidget); |
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275 buttonView = buttonWidget; |
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276 textView = textWidget; |
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277 view = widget; |
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278 parent.contentView().addSubview_(widget); |
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279 setSelection (0, false, true, false); |
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280 } |
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281 |
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282 /** |
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283 * Cuts the selected text. |
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284 * <p> |
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285 * The current selection is first copied to the |
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286 * clipboard and then deleted from the widget. |
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287 * </p> |
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288 * |
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289 * @exception DWTException <ul> |
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290 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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291 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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292 * </ul> |
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293 */ |
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294 public void cut () { |
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295 checkWidget (); |
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296 if ((style & DWT.READ_ONLY) !is 0) return; |
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297 // short [] selection = new short [2]; |
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298 // if (OS.GetControlData (textHandle, (short)OS.kControlEntireControl, OS.kControlEditTextSelectionTag, 4, selection, null) !is OS.noErr) return; |
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299 // if (selection [0] is selection [1]) return; |
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300 // char [] buffer = setText ("", selection [0], selection [1], true); |
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301 // if (buffer !is null) { |
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302 // copyToClipboard (buffer); |
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303 // } |
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304 } |
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305 |
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306 void enableWidget (bool enabled) { |
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307 buttonView.setEnabled(enabled); |
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308 textView.setEnabled(enabled); |
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309 } |
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310 |
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311 /** |
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312 * Returns the number of decimal places used by the receiver. |
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313 * |
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314 * @return the digits |
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315 * |
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316 * @exception DWTException <ul> |
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317 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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318 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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319 * </ul> |
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320 */ |
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321 public int getDigits () { |
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322 checkWidget (); |
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323 return digits; |
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324 } |
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325 |
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326 /** |
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327 * Returns the amount that the receiver's value will be |
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328 * modified by when the up/down arrows are pressed. |
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329 * |
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330 * @return the increment |
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331 * |
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332 * @exception DWTException <ul> |
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333 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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334 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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335 * </ul> |
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336 */ |
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337 public int getIncrement () { |
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338 checkWidget (); |
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339 return (int)buttonView.increment(); |
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340 } |
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341 |
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342 /** |
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343 * Returns the maximum value which the receiver will allow. |
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344 * |
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345 * @return the maximum |
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346 * |
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347 * @exception DWTException <ul> |
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348 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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349 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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350 * </ul> |
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351 */ |
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352 public int getMaximum () { |
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353 checkWidget (); |
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354 return (int)buttonView.maxValue(); |
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355 } |
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356 |
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357 /** |
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358 * Returns the minimum value which the receiver will allow. |
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359 * |
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360 * @return the minimum |
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361 * |
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362 * @exception DWTException <ul> |
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363 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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364 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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365 * </ul> |
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366 */ |
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367 public int getMinimum () { |
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368 checkWidget (); |
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369 return (int)buttonView.minValue(); |
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370 } |
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371 |
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372 /** |
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373 * Returns the amount that the receiver's position will be |
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374 * modified by when the page up/down keys are pressed. |
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375 * |
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376 * @return the page increment |
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377 * |
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378 * @exception DWTException <ul> |
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379 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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380 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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381 * </ul> |
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382 */ |
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383 public int getPageIncrement () { |
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384 checkWidget (); |
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385 return pageIncrement; |
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386 } |
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387 |
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388 /** |
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389 * Returns the <em>selection</em>, which is the receiver's position. |
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390 * |
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391 * @return the selection |
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392 * |
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393 * @exception DWTException <ul> |
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394 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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395 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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396 * </ul> |
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397 */ |
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398 public int getSelection () { |
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399 checkWidget (); |
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400 return (int)((NSStepper)buttonView).doubleValue(); |
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401 } |
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402 |
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403 int getSelectionText () { |
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404 return -1; |
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405 } |
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406 |
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407 /** |
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408 * Pastes text from clipboard. |
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409 * <p> |
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410 * The selected text is deleted from the widget |
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411 * and new text inserted from the clipboard. |
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412 * </p> |
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413 * |
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414 * @exception DWTException <ul> |
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415 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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416 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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417 * </ul> |
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418 */ |
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419 public void paste () { |
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420 checkWidget (); |
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421 if ((style & DWT.READ_ONLY) !is 0) return; |
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422 // String text = getClipboardText (); |
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423 // short [] selection = new short [2]; |
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424 // if (OS.GetControlData (textHandle, (short)OS.kControlEntireControl, OS.kControlEditTextSelectionTag, 4, selection, null) !is OS.noErr) return; |
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425 // setText (text, selection [0], selection [1], true); |
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426 } |
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427 |
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428 void releaseHandle () { |
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429 super.releaseHandle(); |
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430 if (buttonView !is null) { |
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431 buttonView.setTag(-1); |
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432 buttonView.release(); |
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433 } |
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434 if (textView !is null) { |
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435 textView.setTag(-1); |
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436 textView.release(); |
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437 } |
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438 buttonView = null; |
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439 textView = null; |
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440 } |
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441 |
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442 /** |
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443 * Removes the listener from the collection of listeners who will |
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444 * be notified when the receiver's text is modified. |
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445 * |
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446 * @param listener the listener which should no longer be notified |
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447 * |
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448 * @exception IllegalArgumentException <ul> |
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449 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
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450 * </ul> |
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451 * @exception DWTException <ul> |
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452 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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453 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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454 * </ul> |
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455 * |
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456 * @see ModifyListener |
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457 * @see #addModifyListener |
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458 */ |
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459 public void removeModifyListener (ModifyListener listener) { |
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460 checkWidget (); |
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461 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); |
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462 if (eventTable is null) return; |
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463 eventTable.unhook (DWT.Modify, listener); |
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464 } |
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465 |
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466 /** |
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467 * Removes the listener from the collection of listeners who will |
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468 * be notified when the control is selected by the user. |
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469 * |
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470 * @param listener the listener which should no longer be notified |
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471 * |
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472 * @exception IllegalArgumentException <ul> |
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473 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
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474 * </ul> |
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475 * @exception DWTException <ul> |
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476 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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477 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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478 * </ul> |
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479 * |
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480 * @see SelectionListener |
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481 * @see #addSelectionListener |
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482 */ |
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483 public void removeSelectionListener(SelectionListener listener) { |
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484 checkWidget (); |
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485 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); |
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486 if (eventTable is null) return; |
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487 eventTable.unhook (DWT.Selection, listener); |
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488 eventTable.unhook (DWT.DefaultSelection,listener); |
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489 } |
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490 |
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491 /** |
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492 * Removes the listener from the collection of listeners who will |
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493 * be notified when the control is verified. |
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494 * |
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495 * @param listener the listener which should be notified |
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496 * |
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497 * @exception IllegalArgumentException <ul> |
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498 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
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499 * </ul> |
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500 * @exception DWTException <ul> |
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501 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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502 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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503 * </ul> |
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504 * |
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505 * @see VerifyListener |
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506 * @see #addVerifyListener |
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507 */ |
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508 void removeVerifyListener (VerifyListener listener) { |
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509 checkWidget (); |
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510 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); |
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511 if (eventTable is null) return; |
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512 eventTable.unhook (DWT.Verify, listener); |
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513 } |
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514 |
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515 void sendSelection () { |
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516 setSelection (getSelection(), false, true, true); |
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517 } |
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518 |
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519 int setBounds (int x, int y, int width, int height, bool move, bool resize) { |
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520 int result = super.setBounds(x, y, width, height, move, resize); |
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521 if ((result & RESIZED) !is 0) { |
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522 buttonView.sizeToFit(); |
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523 NSRect buttonFrame = buttonView.bounds(); |
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524 NSRect frame = view.frame(); |
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525 buttonFrame.x = frame.width - buttonFrame.width; |
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526 buttonFrame.y = 0; |
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527 frame.x = 0; |
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528 frame.y = 0; |
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529 frame.width -= buttonFrame.width + GAP; |
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530 textView.setFrame(frame); |
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531 buttonView.setFrame(buttonFrame); |
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532 } |
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533 return result; |
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534 } |
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535 |
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536 /** |
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537 * Sets the number of decimal places used by the receiver. |
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538 * <p> |
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539 * The digit setting is used to allow for floating point values in the receiver. |
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540 * For example, to set the selection to a floating point value of 1.37 call setDigits() with |
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541 * a value of 2 and setSelection() with a value of 137. Similarly, if getDigits() has a value |
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542 * of 2 and getSelection() returns 137 this should be interpreted as 1.37. This applies to all |
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543 * numeric APIs. |
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544 * </p> |
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545 * |
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546 * @param value the new digits (must be greater than or equal to zero) |
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547 * |
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548 * @exception IllegalArgumentException <ul> |
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549 * <li>ERROR_INVALID_ARGUMENT - if the value is less than zero</li> |
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550 * </ul> |
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551 * @exception DWTException <ul> |
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552 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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553 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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554 * </ul> |
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555 */ |
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556 public void setDigits (int value) { |
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557 checkWidget (); |
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558 if (value < 0) error (DWT.ERROR_INVALID_ARGUMENT); |
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559 // if (value is digits) return; |
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560 // digits = value; |
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561 // int pos = OS.GetControl32BitValue (buttonHandle); |
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562 // setSelection (pos, false, true, false); |
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563 } |
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564 |
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565 /** |
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566 * Sets the amount that the receiver's value will be |
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567 * modified by when the up/down arrows are pressed to |
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568 * the argument, which must be at least one. |
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569 * |
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570 * @param value the new increment (must be greater than zero) |
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571 * |
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572 * @exception DWTException <ul> |
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573 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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574 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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575 * </ul> |
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576 */ |
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577 public void setIncrement (int value) { |
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578 checkWidget (); |
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579 if (value < 1) return; |
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580 buttonView.setIncrement(value); |
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581 } |
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582 |
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583 /** |
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584 * Sets the maximum value that the receiver will allow. This new |
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585 * value will be ignored if it is not greater than the receiver's current |
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586 * minimum value. If the new maximum is applied then the receiver's |
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587 * selection value will be adjusted if necessary to fall within its new range. |
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588 * |
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589 * @param value the new maximum, which must be greater than the current minimum |
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590 * |
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591 * @exception DWTException <ul> |
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592 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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593 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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594 * </ul> |
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595 */ |
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596 public void setMaximum (int value) { |
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597 checkWidget (); |
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598 if (value < 0) return; |
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599 int min = getMinimum (); |
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600 if (value <= min) return; |
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601 int pos = getSelection(); |
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602 buttonView.setMaxValue(value); |
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603 if (pos > value) setSelection (value, true, true, false); |
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604 } |
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605 |
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606 /** |
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607 * Sets the minimum value that the receiver will allow. This new |
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608 * value will be ignored if it is negative or is not less than the receiver's |
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609 * current maximum value. If the new minimum is applied then the receiver's |
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610 * selection value will be adjusted if necessary to fall within its new range. |
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611 * |
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612 * @param value the new minimum, which must be nonnegative and less than the current maximum |
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613 * |
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614 * @exception DWTException <ul> |
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615 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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616 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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617 * </ul> |
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618 */ |
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619 public void setMinimum (int value) { |
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620 checkWidget (); |
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621 if (value < 0) return; |
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622 int max = getMaximum(); |
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623 if (value >= max) return; |
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624 int pos = getSelection(); |
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625 buttonView.setMinValue(value); |
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626 if (pos < value) setSelection (value, true, true, false); |
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627 } |
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628 |
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629 /** |
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630 * Sets the amount that the receiver's position will be |
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631 * modified by when the page up/down keys are pressed |
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632 * to the argument, which must be at least one. |
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633 * |
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634 * @param value the page increment (must be greater than zero) |
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635 * |
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636 * @exception DWTException <ul> |
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637 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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638 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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639 * </ul> |
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640 */ |
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641 public void setPageIncrement (int value) { |
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642 checkWidget (); |
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643 if (value < 1) return; |
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644 pageIncrement = value; |
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645 } |
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646 |
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647 /** |
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648 * Sets the <em>selection</em>, which is the receiver's |
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649 * position, to the argument. If the argument is not within |
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650 * the range specified by minimum and maximum, it will be |
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651 * adjusted to fall within this range. |
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652 * |
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653 * @param value the new selection (must be zero or greater) |
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654 * |
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655 * @exception DWTException <ul> |
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656 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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657 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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658 * </ul> |
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659 */ |
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660 public void setSelection (int value) { |
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661 checkWidget (); |
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662 int min = getMinimum(); |
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663 int max = getMaximum(); |
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664 value = Math.min (Math.max (min, value), max); |
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665 setSelection (value, true, true, false); |
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666 } |
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|
667 |
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668 void setSelection (int value, bool setPos, bool setText, bool notify) { |
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669 if (setPos) { |
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670 ((NSStepper)buttonView).setDoubleValue(value); |
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671 } |
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672 if (setText) { |
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673 String string = String.valueOf (value); |
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674 if (digits > 0) { |
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675 String decimalSeparator = ".";//getDecimalSeparator (); |
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676 int index = string.length () - digits; |
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677 StringBuffer buffer = new StringBuffer (); |
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678 if (index > 0) { |
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679 buffer.append (string.substring (0, index)); |
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680 buffer.append (decimalSeparator); |
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681 buffer.append (string.substring (index)); |
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682 } else { |
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683 buffer.append ("0"); |
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684 buffer.append (decimalSeparator); |
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685 while (index++ < 0) buffer.append ("0"); |
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686 buffer.append (string); |
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687 } |
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688 string = buffer.toString (); |
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689 } |
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690 NSCell cell = new NSCell(textView.cell()); |
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691 if (hooks (DWT.Verify) || filters (DWT.Verify)) { |
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692 int length = cell.title().length(); |
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693 string = verifyText (string, 0, length, null); |
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694 if (string is null) return; |
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695 } |
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696 cell.setTitle(NSString.stringWith(string)); |
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697 // short [] selection = new short [] {0, (short)string.length ()}; |
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698 // OS.SetControlData (textHandle, (short)OS.kControlEntireControl, OS.kControlEditTextSelectionTag, 4, selection); |
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699 sendEvent (DWT.Modify); |
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700 } |
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701 if (notify) postEvent (DWT.Selection); |
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702 } |
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703 |
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704 /** |
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705 * Sets the receiver's selection, minimum value, maximum |
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706 * value, digits, increment and page increment all at once. |
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707 * <p> |
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708 * Note: This is similar to setting the values individually |
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709 * using the appropriate methods, but may be implemented in a |
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710 * more efficient fashion on some platforms. |
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711 * </p> |
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712 * |
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713 * @param selection the new selection value |
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714 * @param minimum the new minimum value |
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715 * @param maximum the new maximum value |
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716 * @param digits the new digits value |
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717 * @param increment the new increment value |
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718 * @param pageIncrement the new pageIncrement value |
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719 * |
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720 * @exception DWTException <ul> |
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721 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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722 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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723 * </ul> |
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724 * |
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725 * @since 3.2 |
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726 */ |
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727 public void setValues (int selection, int minimum, int maximum, int digits, int increment, int pageIncrement) { |
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728 checkWidget (); |
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729 if (minimum < 0) return; |
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730 if (maximum <= minimum) return; |
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731 if (digits < 0) return; |
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732 if (increment < 1) return; |
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733 if (pageIncrement < 1) return; |
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734 selection = Math.min (Math.max (minimum, selection), maximum); |
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735 this.pageIncrement = pageIncrement; |
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736 this.digits = digits; |
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737 buttonView.setIncrement(increment); |
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738 buttonView.setMaxValue(maximum); |
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739 buttonView.setMinValue(minimum); |
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740 setSelection (selection, true, true, false); |
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741 } |
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742 |
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743 String verifyText (String string, int start, int end, Event keyEvent) { |
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744 Event event = new Event (); |
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745 event.text = string; |
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746 event.start = start; |
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747 event.end = end; |
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748 if (keyEvent !is null) { |
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749 event.character = keyEvent.character; |
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750 event.keyCode = keyEvent.keyCode; |
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751 event.stateMask = keyEvent.stateMask; |
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752 } |
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753 int index = 0; |
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754 if (digits > 0) { |
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755 String decimalSeparator = ".";//getDecimalSeparator (); |
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756 index = string.indexOf (decimalSeparator); |
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757 if (index !is -1) { |
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758 string = string.substring (0, index) + string.substring (index + 1); |
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759 } |
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760 index = 0; |
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761 } |
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762 while (index < string.length ()) { |
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763 if (!Character.isDigit (string.charAt (index))) break; |
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764 index++; |
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765 } |
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766 event.doit = index is string.length (); |
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767 /* |
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768 * It is possible (but unlikely), that application |
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769 * code could have disposed the widget in the verify |
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770 * event. If this happens, answer null to cancel |
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771 * the operation. |
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772 */ |
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773 sendEvent (DWT.Verify, event); |
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774 if (!event.doit || isDisposed ()) return null; |
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775 return event.text; |
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776 } |
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777 |
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778 } |