Mercurial > projects > dwt2
annotate org.eclipse.swt.win32.win32.x86/src/org/eclipse/swt/widgets/Dialog.d @ 0:6dd524f61e62
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author | Frank Benoit <benoit@tionex.de> |
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date | Mon, 02 Mar 2009 14:44:16 +0100 |
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1 /******************************************************************************* |
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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 * Port to the D programming language: |
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11 * Frank Benoit <benoit@tionex.de> |
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12 *******************************************************************************/ |
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13 module org.eclipse.swt.widgets.Dialog; |
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14 |
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15 |
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16 import org.eclipse.swt.SWT; |
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17 import org.eclipse.swt.SWTException; |
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18 import org.eclipse.swt.widgets.Shell; |
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19 import org.eclipse.swt.widgets.Display; |
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20 import org.eclipse.swt.widgets.Widget; |
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21 import java.lang.all; |
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22 |
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23 /** |
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24 * This class is the abstract superclass of the classes |
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25 * that represent the built in platform dialogs. |
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26 * A <code>Dialog</code> typically contains other widgets |
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27 * that are not accessible. A <code>Dialog</code> is not |
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28 * a <code>Widget</code>. |
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29 * <p> |
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30 * This class can also be used as the abstract superclass |
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31 * for user-designed dialogs. Such dialogs usually consist |
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32 * of a Shell with child widgets. The basic template for a |
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33 * user-defined dialog typically looks something like this: |
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34 * <pre><code> |
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35 * public class MyDialog extends Dialog { |
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36 * Object result; |
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37 * |
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38 * public MyDialog (Shell parent, int style) { |
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39 * super (parent, style); |
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40 * } |
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41 * public MyDialog (Shell parent) { |
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42 * this (parent, 0); // your default style bits go here (not the Shell's style bits) |
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43 * } |
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44 * public Object open () { |
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45 * Shell parent = getParent(); |
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46 * Shell shell = new Shell(parent, SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL); |
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47 * shell.setText(getText()); |
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48 * // Your code goes here (widget creation, set result, etc). |
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49 * shell.open(); |
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50 * Display display = parent.getDisplay(); |
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51 * while (!shell.isDisposed()) { |
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52 * if (!display.readAndDispatch()) display.sleep(); |
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53 * } |
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54 * return result; |
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55 * } |
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56 * } |
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57 * </pre></code> |
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58 * <p> |
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59 * Note: The <em>modality</em> styles supported by this class |
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60 * are treated as <em>HINT</em>s, because not all are supported |
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61 * by every subclass on every platform. If a modality style is |
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62 * not supported, it is "upgraded" to a more restrictive modality |
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63 * style that is supported. For example, if <code>PRIMARY_MODAL</code> |
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64 * is not supported by a particular dialog, it would be upgraded to |
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65 * <code>APPLICATION_MODAL</code>. In addition, as is the case |
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66 * for shells, the window manager for the desktop on which the |
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67 * instance is visible has ultimate control over the appearance |
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68 * and behavior of the instance, including its modality. |
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69 * <dl> |
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70 * <dt><b>Styles:</b></dt> |
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71 * <dd>APPLICATION_MODAL, PRIMARY_MODAL, SYSTEM_MODAL</dd> |
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72 * <dt><b>Events:</b></dt> |
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73 * <dd>(none)</dd> |
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74 * </dl> |
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75 * <p> |
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76 * Note: Only one of the styles APPLICATION_MODAL, PRIMARY_MODAL, |
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77 * and SYSTEM_MODAL may be specified. |
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78 * </p> |
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79 * |
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80 * @see Shell |
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81 * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample</a> |
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82 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
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83 */ |
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84 |
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85 public abstract class Dialog { |
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86 int style; |
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87 Shell parent; |
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88 String title; |
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89 |
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90 /** |
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91 * Constructs a new instance of this class given only its |
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92 * parent. |
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93 * |
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94 * @param parent a shell which will be the parent of the new instance |
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95 * |
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96 * @exception IllegalArgumentException <ul> |
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97 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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98 * </ul> |
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99 * @exception SWTException <ul> |
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100 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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101 * </ul> |
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102 */ |
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103 public this (Shell parent) { |
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104 this (parent, SWT.PRIMARY_MODAL); |
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105 } |
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106 |
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107 /** |
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108 * Constructs a new instance of this class given its parent |
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109 * and a style value describing its behavior and appearance. |
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110 * <p> |
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111 * The style value is either one of the style constants defined in |
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112 * class <code>SWT</code> which is applicable to instances of this |
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113 * class, or must be built by <em>bitwise OR</em>'ing together |
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114 * (that is, using the <code>int</code> "|" operator) two or more |
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115 * of those <code>SWT</code> style constants. The class description |
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116 * lists the style constants that are applicable to the class. |
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117 * Style bits are also inherited from superclasses. |
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118 * |
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119 * @param parent a shell which will be the parent of the new instance |
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120 * @param style the style of dialog to construct |
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121 * |
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122 * @exception IllegalArgumentException <ul> |
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123 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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124 * </ul> |
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125 * @exception SWTException <ul> |
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126 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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127 * </ul> |
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128 * |
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129 * @see SWT#PRIMARY_MODAL |
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130 * @see SWT#APPLICATION_MODAL |
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131 * @see SWT#SYSTEM_MODAL |
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132 */ |
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133 public this (Shell parent, int style) { |
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134 checkParent (parent); |
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135 this.parent = parent; |
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136 this.style = style; |
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137 title = ""; |
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138 } |
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139 |
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140 /** |
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141 * Checks that this class can be subclassed. |
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142 * <p> |
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143 * IMPORTANT: See the comment in <code>Widget.checkSubclass()</code>. |
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144 * </p> |
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145 * |
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146 * @exception SWTException <ul> |
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147 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
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148 * </ul> |
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149 * |
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150 * @see Widget#checkSubclass |
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151 */ |
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152 protected void checkSubclass () { |
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153 //PORTING_TODO: implement Display.isValidClass and Class? |
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154 /+if (!Display.isValidClass (getClass ())) { |
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155 error (SWT.ERROR_INVALID_SUBCLASS); |
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156 }+/ |
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157 } |
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158 |
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159 /** |
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160 * Throws an exception if the specified widget can not be |
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161 * used as a parent for the receiver. |
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162 * |
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163 * @exception IllegalArgumentException <ul> |
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164 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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165 * <li>ERROR_INVALID_ARGUMENT - if the parent is disposed</li> |
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166 * </ul> |
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167 * @exception SWTException <ul> |
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168 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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169 * </ul> |
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170 */ |
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171 void checkParent (Shell parent) { |
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172 if (parent is null) error (SWT.ERROR_NULL_ARGUMENT); |
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173 parent.checkWidget (); |
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174 } |
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175 |
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176 static int checkStyle (Shell parent, int style) { |
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177 if ((style & (SWT.PRIMARY_MODAL | SWT.APPLICATION_MODAL | SWT.SYSTEM_MODAL)) is 0) { |
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178 style |= SWT.APPLICATION_MODAL; |
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179 } |
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180 style &= ~SWT.MIRRORED; |
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181 if ((style & (SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT)) is 0) { |
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182 if (parent !is null) { |
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183 if ((parent.style & SWT.LEFT_TO_RIGHT) !is 0) style |= SWT.LEFT_TO_RIGHT; |
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184 if ((parent.style & SWT.RIGHT_TO_LEFT) !is 0) style |= SWT.RIGHT_TO_LEFT; |
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185 } |
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186 } |
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187 return Widget.checkBits (style, SWT.LEFT_TO_RIGHT, SWT.RIGHT_TO_LEFT, 0, 0, 0, 0); |
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188 } |
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189 |
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190 /** |
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191 * Does whatever dialog specific cleanup is required, and then |
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192 * uses the code in <code>SWTError.error</code> to handle the error. |
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193 * |
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194 * @param code the descriptive error code |
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195 * |
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196 * @see SWT#error(int) |
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197 */ |
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198 void error (int code) { |
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199 SWT.error(code); |
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200 } |
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201 |
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202 /** |
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203 * Returns the receiver's parent, which must be a <code>Shell</code> |
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204 * or null. |
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205 * |
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206 * @return the receiver's parent |
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207 * |
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208 * @exception SWTException <ul> |
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209 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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210 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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211 * </ul> |
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212 */ |
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213 public Shell getParent () { |
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214 return parent; |
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215 } |
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216 |
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217 /** |
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218 * Returns the receiver's style information. |
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219 * <p> |
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220 * Note that, the value which is returned by this method <em>may |
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221 * not match</em> the value which was provided to the constructor |
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222 * when the receiver was created. |
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223 * </p> |
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224 * |
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225 * @return the style bits |
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226 * |
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227 * @exception SWTException <ul> |
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228 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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229 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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230 * </ul> |
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231 */ |
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232 public int getStyle () { |
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233 return style; |
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234 } |
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235 |
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236 /** |
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237 * Returns the receiver's text, which is the string that the |
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238 * window manager will typically display as the receiver's |
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239 * <em>title</em>. If the text has not previously been set, |
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240 * returns an empty string. |
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241 * |
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242 * @return the text |
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243 * |
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244 * @exception SWTException <ul> |
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245 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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246 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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247 * </ul> |
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248 */ |
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249 public String getText () { |
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250 return title; |
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251 } |
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252 |
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253 /** |
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254 * Sets the receiver's text, which is the string that the |
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255 * window manager will typically display as the receiver's |
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256 * <em>title</em>, to the argument, which must not be null. |
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257 * |
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258 * @param string the new text |
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259 * |
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260 * @exception SWTException <ul> |
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261 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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262 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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263 * </ul> |
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264 */ |
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265 public void setText (String string) { |
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266 // SWT extension: allow null string |
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267 //if (string is null) error (SWT.ERROR_NULL_ARGUMENT); |
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268 title = string; |
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269 } |
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270 |
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271 } |