Mercurial > projects > dwt-mac
annotate dwt/widgets/Dialog.d @ 45:d8635bb48c7c
Merge with SWT 3.5
author | Jacob Carlborg <doob@me.com> |
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date | Mon, 01 Dec 2008 17:07:00 +0100 |
parents | 5b53d338c709 |
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rev | line source |
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45 | 1 /******************************************************************************* |
2 * Copyright (c) 2000, 2008 IBM Corporation and others. | |
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3 * All rights reserved. This program and the accompanying materials |
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4 * are made available under the terms of the Eclipse Public License v1.0 |
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5 * which accompanies this distribution, and is available at |
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6 * http://www.eclipse.org/legal/epl-v10.html |
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7 * |
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8 * Contributors: |
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9 * IBM Corporation - initial API and implementation |
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10 * |
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11 * Port to the D programming language: |
45 | 12 * Jacob Carlborg <doob@me.com> |
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13 *******************************************************************************/ |
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14 module dwt.widgets.Dialog; |
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15 |
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16 |
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17 import dwt.DWT; |
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18 import dwt.DWTException; |
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19 |
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20 import dwt.dwthelper.utils; |
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21 import dwt.widgets.Display; |
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22 import dwt.widgets.Shell; |
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23 import dwt.widgets.Widget; |
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24 |
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25 /** |
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26 * This class is the abstract superclass of the classes |
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27 * that represent the built in platform dialogs. |
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28 * A <code>Dialog</code> typically contains other widgets |
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29 * that are not accessible. A <code>Dialog</code> is not |
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30 * a <code>Widget</code>. |
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31 * <p> |
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32 * This class can also be used as the abstract superclass |
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33 * for user-designed dialogs. Such dialogs usually consist |
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34 * of a Shell with child widgets. The basic template for a |
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35 * user-defined dialog typically looks something like this: |
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36 * <pre><code> |
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37 * public class MyDialog extends Dialog { |
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38 * Object result; |
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39 * |
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40 * public MyDialog (Shell parent, int style) { |
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41 * super (parent, style); |
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42 * } |
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43 * public MyDialog (Shell parent) { |
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44 * this (parent, 0); // your default style bits go here (not the Shell's style bits) |
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45 * } |
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46 * public Object open () { |
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47 * Shell parent = getParent(); |
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48 * Shell shell = new Shell(parent, DWT.DIALOG_TRIM | DWT.APPLICATION_MODAL); |
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49 * shell.setText(getText()); |
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50 * // Your code goes here (widget creation, set result, etc). |
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51 * shell.open(); |
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52 * Display display = parent.getDisplay(); |
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53 * while (!shell.isDisposed()) { |
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54 * if (!display.readAndDispatch()) display.sleep(); |
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55 * } |
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56 * return result; |
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57 * } |
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58 * } |
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59 * </pre></code> |
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60 * <p> |
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61 * Note: The <em>modality</em> styles supported by this class |
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62 * are treated as <em>HINT</em>s, because not all are supported |
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63 * by every subclass on every platform. If a modality style is |
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64 * not supported, it is "upgraded" to a more restrictive modality |
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65 * style that is supported. For example, if <code>PRIMARY_MODAL</code> |
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66 * is not supported by a particular dialog, it would be upgraded to |
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67 * <code>APPLICATION_MODAL</code>. In addition, as is the case |
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68 * for shells, the window manager for the desktop on which the |
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69 * instance is visible has ultimate control over the appearance |
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70 * and behavior of the instance, including its modality. |
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71 * <dl> |
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72 * <dt><b>Styles:</b></dt> |
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73 * <dd>APPLICATION_MODAL, PRIMARY_MODAL, SYSTEM_MODAL</dd> |
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74 * <dt><b>Events:</b></dt> |
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75 * <dd>(none)</dd> |
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76 * </dl> |
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77 * <p> |
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78 * Note: Only one of the styles APPLICATION_MODAL, PRIMARY_MODAL, |
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79 * and SYSTEM_MODAL may be specified. |
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80 * </p> |
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81 * |
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82 * @see Shell |
45 | 83 * @see <a href="http://www.eclipse.org/swt/examples.php">DWT Example: ControlExample</a> |
84 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> | |
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85 */ |
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86 |
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87 public abstract class Dialog { |
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88 int style; |
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89 Shell parent; |
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90 String title; |
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91 |
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92 /** |
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93 * Constructs a new instance of this class given only its |
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94 * parent. |
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95 * |
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96 * @param parent a shell which will be the parent of the new instance |
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97 * |
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98 * @exception IllegalArgumentException <ul> |
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99 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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100 * </ul> |
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101 * @exception DWTException <ul> |
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102 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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103 * </ul> |
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104 */ |
5 | 105 public this (Shell parent) { |
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106 this (parent, DWT.PRIMARY_MODAL); |
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107 } |
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108 |
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109 /** |
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110 * Constructs a new instance of this class given its parent |
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111 * and a style value describing its behavior and appearance. |
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112 * <p> |
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113 * The style value is either one of the style constants defined in |
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114 * class <code>DWT</code> which is applicable to instances of this |
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115 * class, or must be built by <em>bitwise OR</em>'ing together |
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116 * (that is, using the <code>int</code> "|" operator) two or more |
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117 * of those <code>DWT</code> style constants. The class description |
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118 * lists the style constants that are applicable to the class. |
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119 * Style bits are also inherited from superclasses. |
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120 * |
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121 * @param parent a shell which will be the parent of the new instance |
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122 * @param style the style of dialog to construct |
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123 * |
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124 * @exception IllegalArgumentException <ul> |
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125 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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126 * </ul> |
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127 * @exception DWTException <ul> |
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128 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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129 * </ul> |
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130 * |
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131 * @see DWT#PRIMARY_MODAL |
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132 * @see DWT#APPLICATION_MODAL |
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133 * @see DWT#SYSTEM_MODAL |
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134 */ |
5 | 135 public this (Shell parent, int style) { |
0
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136 checkParent (parent); |
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137 this.parent = parent; |
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138 this.style = style; |
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139 title = ""; |
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140 } |
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141 |
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142 /** |
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143 * Checks that this class can be subclassed. |
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144 * <p> |
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145 * IMPORTANT: See the comment in <code>Widget.checkSubclass()</code>. |
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146 * </p> |
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147 * |
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148 * @exception DWTException <ul> |
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149 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
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150 * </ul> |
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151 * |
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152 * @see Widget#checkSubclass |
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153 */ |
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154 protected void checkSubclass () { |
15
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155 if (!Display.isValidClass (this.classinfo)) { |
0
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156 error (DWT.ERROR_INVALID_SUBCLASS); |
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157 } |
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158 } |
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159 |
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160 /** |
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161 * Throws an exception if the specified widget can not be |
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162 * used as a parent for the receiver. |
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163 * |
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164 * @exception IllegalArgumentException <ul> |
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165 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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166 * <li>ERROR_INVALID_ARGUMENT - if the parent is disposed</li> |
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167 * </ul> |
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168 * @exception DWTException <ul> |
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169 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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170 * </ul> |
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171 */ |
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172 void checkParent (Shell parent) { |
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173 if (parent is null) error (DWT.ERROR_NULL_ARGUMENT); |
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174 parent.checkWidget (); |
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175 } |
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176 |
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177 static int checkStyle (Shell parent, int style) { |
45 | 178 if ((style & (DWT.PRIMARY_MODAL | DWT.APPLICATION_MODAL | DWT.SYSTEM_MODAL)) is 0) { |
179 style |= DWT.APPLICATION_MODAL; | |
180 } | |
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181 style &= ~DWT.MIRRORED; |
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182 if ((style & (DWT.LEFT_TO_RIGHT | DWT.RIGHT_TO_LEFT)) is 0) { |
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183 if (parent !is null) { |
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184 if ((parent.style & DWT.LEFT_TO_RIGHT) !is 0) style |= DWT.LEFT_TO_RIGHT; |
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185 if ((parent.style & DWT.RIGHT_TO_LEFT) !is 0) style |= DWT.RIGHT_TO_LEFT; |
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186 } |
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187 } |
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188 return Widget.checkBits (style, DWT.LEFT_TO_RIGHT, DWT.RIGHT_TO_LEFT, 0, 0, 0, 0); |
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189 } |
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190 |
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191 /** |
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192 * Does whatever dialog specific cleanup is required, and then |
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193 * uses the code in <code>DWTError.error</code> to handle the error. |
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194 * |
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195 * @param code the descriptive error code |
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196 * |
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197 * @see DWT#error(int) |
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198 */ |
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199 void error (int code) { |
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200 DWT.error(code); |
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201 } |
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202 |
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203 /** |
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204 * Returns the receiver's parent, which must be a <code>Shell</code> |
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205 * or null. |
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206 * |
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207 * @return the receiver's parent |
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208 * |
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209 * @exception DWTException <ul> |
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210 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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211 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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212 * </ul> |
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213 */ |
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214 public Shell getParent () { |
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215 return parent; |
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216 } |
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217 |
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218 /** |
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219 * Returns the receiver's style information. |
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220 * <p> |
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221 * Note that, the value which is returned by this method <em>may |
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222 * not match</em> the value which was provided to the constructor |
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223 * when the receiver was created. |
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224 * </p> |
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225 * |
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226 * @return the style bits |
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227 * |
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228 * @exception DWTException <ul> |
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229 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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230 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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231 * </ul> |
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232 */ |
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233 public int getStyle () { |
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234 return style; |
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235 } |
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236 |
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237 /** |
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238 * Returns the receiver's text, which is the string that the |
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239 * window manager will typically display as the receiver's |
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240 * <em>title</em>. If the text has not previously been set, |
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241 * returns an empty string. |
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242 * |
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243 * @return the text |
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244 * |
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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 public String getText () { |
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251 return title; |
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252 } |
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253 |
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254 /** |
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255 * Sets the receiver's text, which is the string that the |
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256 * window manager will typically display as the receiver's |
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257 * <em>title</em>, to the argument, which must not be null. |
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258 * |
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259 * @param string the new text |
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260 * |
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261 * @exception IllegalArgumentException <ul> |
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262 * <li>ERROR_NULL_ARGUMENT - if the text is null</li> |
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263 * </ul> |
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264 * @exception DWTException <ul> |
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265 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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266 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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267 * </ul> |
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268 */ |
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269 public void setText (String string) { |
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270 //if (string is null) error (DWT.ERROR_NULL_ARGUMENT); |
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271 title = string; |
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272 } |
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273 |
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274 } |