Mercurial > projects > dwt-mac
annotate dwt/widgets/Decorations.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 | fdbd69a5f101 |
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.Decorations; |
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12 |
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13 import dwt.dwthelper.utils; |
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14 |
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15 |
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16 import dwt.DWT; |
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17 import dwt.DWTException; |
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18 import dwt.graphics.Image; |
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19 import dwt.graphics.ImageData; |
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20 |
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21 /** |
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22 * Instances of this class provide the appearance and |
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23 * behavior of <code>Shells</code>, but are not top |
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24 * level shells or dialogs. Class <code>Shell</code> |
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25 * shares a significant amount of code with this class, |
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26 * and is a subclass. |
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27 * <p> |
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28 * IMPORTANT: This class was intended to be abstract and |
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29 * should <em>never</em> be referenced or instantiated. |
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30 * Instead, the class <code>Shell</code> should be used. |
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31 * </p> |
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32 * <p> |
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33 * Instances are always displayed in one of the maximized, |
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34 * minimized or normal states: |
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35 * <ul> |
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36 * <li> |
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37 * When an instance is marked as <em>maximized</em>, the |
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38 * window manager will typically resize it to fill the |
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39 * entire visible area of the display, and the instance |
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40 * is usually put in a state where it can not be resized |
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41 * (even if it has style <code>RESIZE</code>) until it is |
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42 * no longer maximized. |
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43 * </li><li> |
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44 * When an instance is in the <em>normal</em> state (neither |
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45 * maximized or minimized), its appearance is controlled by |
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46 * the style constants which were specified when it was created |
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47 * and the restrictions of the window manager (see below). |
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48 * </li><li> |
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49 * When an instance has been marked as <em>minimized</em>, |
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50 * its contents (client area) will usually not be visible, |
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51 * and depending on the window manager, it may be |
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52 * "iconified" (that is, replaced on the desktop by a small |
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53 * simplified representation of itself), relocated to a |
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54 * distinguished area of the screen, or hidden. Combinations |
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55 * of these changes are also possible. |
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56 * </li> |
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57 * </ul> |
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58 * </p> |
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59 * Note: The styles supported by this class must be treated |
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60 * as <em>HINT</em>s, since the window manager for the |
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61 * desktop on which the instance is visible has ultimate |
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62 * control over the appearance and behavior of decorations. |
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63 * For example, some window managers only support resizable |
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64 * windows and will always assume the RESIZE style, even if |
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65 * it is not set. |
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66 * <dl> |
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67 * <dt><b>Styles:</b></dt> |
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68 * <dd>BORDER, CLOSE, MIN, MAX, NO_TRIM, RESIZE, TITLE, ON_TOP, TOOL</dd> |
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69 * <dt><b>Events:</b></dt> |
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70 * <dd>(none)</dd> |
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71 * </dl> |
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72 * Class <code>DWT</code> provides two "convenience constants" |
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73 * for the most commonly required style combinations: |
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74 * <dl> |
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75 * <dt><code>SHELL_TRIM</code></dt> |
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76 * <dd> |
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77 * the result of combining the constants which are required |
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78 * to produce a typical application top level shell: (that |
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79 * is, <code>CLOSE | TITLE | MIN | MAX | RESIZE</code>) |
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80 * </dd> |
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81 * <dt><code>DIALOG_TRIM</code></dt> |
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82 * <dd> |
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83 * the result of combining the constants which are required |
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84 * to produce a typical application dialog shell: (that |
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85 * is, <code>TITLE | CLOSE | BORDER</code>) |
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86 * </dd> |
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87 * </dl> |
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88 * <p> |
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89 * IMPORTANT: This class is intended to be subclassed <em>only</em> |
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90 * within the DWT implementation. |
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91 * </p> |
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92 * |
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93 * @see #getMinimized |
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94 * @see #getMaximized |
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95 * @see Shell |
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96 * @see DWT |
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97 */ |
3 | 98 public class Decorations : Canvas { |
0
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99 Image image; |
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100 Image [] images = new Image [0]; |
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101 Menu menuBar; |
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102 String text = ""; |
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103 bool minimized, maximized; |
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104 Control savedFocus; |
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105 Button defaultButton; |
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106 |
5 | 107 this () { |
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108 /* Do nothing */ |
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109 } |
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110 |
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111 /** |
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112 * Constructs a new instance of this class given its parent |
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113 * and a style value describing its behavior and appearance. |
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114 * <p> |
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115 * The style value is either one of the style constants defined in |
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116 * class <code>DWT</code> which is applicable to instances of this |
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117 * class, or must be built by <em>bitwise OR</em>'ing together |
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118 * (that is, using the <code>int</code> "|" operator) two or more |
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119 * of those <code>DWT</code> style constants. The class description |
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120 * lists the style constants that are applicable to the class. |
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121 * Style bits are also inherited from superclasses. |
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122 * </p> |
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123 * |
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124 * @param parent a composite control which will be the parent of the new instance (cannot be null) |
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125 * @param style the style of control to construct |
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126 * |
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127 * @exception IllegalArgumentException <ul> |
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128 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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129 * </ul> |
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130 * @exception DWTException <ul> |
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131 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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132 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
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133 * </ul> |
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134 * |
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135 * @see DWT#BORDER |
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136 * @see DWT#CLOSE |
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137 * @see DWT#MIN |
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138 * @see DWT#MAX |
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139 * @see DWT#RESIZE |
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140 * @see DWT#TITLE |
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141 * @see DWT#NO_TRIM |
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142 * @see DWT#SHELL_TRIM |
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143 * @see DWT#DIALOG_TRIM |
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144 * @see DWT#ON_TOP |
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145 * @see DWT#TOOL |
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146 * @see Widget#checkSubclass |
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147 * @see Widget#getStyle |
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148 */ |
5 | 149 public this (Composite parent, int style) { |
0
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150 super (parent, checkStyle (style)); |
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151 } |
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152 |
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153 static int checkStyle (int style) { |
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154 if ((style & DWT.NO_TRIM) !is 0) { |
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155 style &= ~(DWT.CLOSE | DWT.TITLE | DWT.MIN | DWT.MAX | DWT.RESIZE | DWT.BORDER); |
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156 } |
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157 if ((style & (DWT.MENU | DWT.MIN | DWT.MAX | DWT.CLOSE)) !is 0) { |
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158 style |= DWT.TITLE; |
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159 } |
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160 return style; |
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161 } |
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162 |
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163 void bringToTop (bool force) { |
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164 moveAbove (null); |
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165 } |
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166 |
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167 protected void checkSubclass () { |
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168 if (!isValidSubclass ()) error (DWT.ERROR_INVALID_SUBCLASS); |
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169 } |
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170 |
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171 int compare (ImageData data1, ImageData data2) { |
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172 if (data1.width is data2.width && data1.height is data2.height) { |
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173 int transparent1 = data1.getTransparencyType (); |
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174 int transparent2 = data2.getTransparencyType (); |
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175 if (transparent1 is DWT.TRANSPARENCY_ALPHA) return -1; |
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176 if (transparent2 is DWT.TRANSPARENCY_ALPHA) return 1; |
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177 if (transparent1 is DWT.TRANSPARENCY_MASK) return -1; |
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178 if (transparent2 is DWT.TRANSPARENCY_MASK) return 1; |
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179 if (transparent1 is DWT.TRANSPARENCY_PIXEL) return -1; |
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180 if (transparent2 is DWT.TRANSPARENCY_PIXEL) return 1; |
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181 return 0; |
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182 } |
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183 return data1.width > data2.width || data1.height > data2.height ? -1 : 1; |
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184 } |
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185 |
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186 Control computeTabGroup () { |
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187 return this; |
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188 } |
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189 |
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190 Control computeTabRoot () { |
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191 return this; |
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192 } |
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193 |
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194 void fixDecorations (Decorations newDecorations, Control control, Menu [] menus) { |
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195 if (this is newDecorations) return; |
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196 if (control is savedFocus) savedFocus = null; |
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197 if (control is defaultButton) defaultButton = null; |
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198 if (menus is null) return; |
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199 Menu menu = control.menu; |
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200 if (menu !is null) { |
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201 int index = 0; |
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202 while (index < menus.length) { |
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203 if (menus [index] is menu) { |
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204 control.setMenu (null); |
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205 return; |
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206 } |
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207 index++; |
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208 } |
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209 menu.fixMenus (newDecorations); |
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210 } |
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211 } |
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212 |
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213 /** |
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214 * Returns the receiver's default button if one had |
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215 * previously been set, otherwise returns null. |
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216 * |
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217 * @return the default button or null |
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218 * |
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219 * @exception DWTException <ul> |
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220 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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221 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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222 * </ul> |
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223 * |
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224 * @see #setDefaultButton(Button) |
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225 */ |
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226 public Button getDefaultButton () { |
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227 checkWidget(); |
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228 return defaultButton; |
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229 } |
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230 |
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231 /** |
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232 * Returns the receiver's image if it had previously been |
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233 * set using <code>setImage()</code>. The image is typically |
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234 * displayed by the window manager when the instance is |
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235 * marked as iconified, and may also be displayed somewhere |
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236 * in the trim when the instance is in normal or maximized |
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237 * states. |
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238 * <p> |
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239 * Note: This method will return null if called before |
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240 * <code>setImage()</code> is called. It does not provide |
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241 * access to a window manager provided, "default" image |
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242 * even if one exists. |
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243 * </p> |
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244 * |
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245 * @return the image |
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246 * |
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247 * @exception DWTException <ul> |
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248 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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249 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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250 * </ul> |
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251 */ |
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252 public Image getImage () { |
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253 checkWidget(); |
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254 return image; |
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255 } |
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256 |
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257 /** |
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258 * Returns the receiver's images if they had previously been |
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259 * set using <code>setImages()</code>. Images are typically |
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260 * displayed by the window manager when the instance is |
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261 * marked as iconified, and may also be displayed somewhere |
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262 * in the trim when the instance is in normal or maximized |
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263 * states. Depending where the icon is displayed, the platform |
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264 * chooses the icon with the "best" attributes. It is expected |
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265 * that the array will contain the same icon rendered at different |
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266 * sizes, with different depth and transparency attributes. |
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267 * |
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268 * <p> |
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269 * Note: This method will return an empty array if called before |
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270 * <code>setImages()</code> is called. It does not provide |
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271 * access to a window manager provided, "default" image |
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272 * even if one exists. |
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273 * </p> |
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274 * |
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275 * @return the images |
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276 * |
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277 * @exception DWTException <ul> |
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278 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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279 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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280 * </ul> |
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281 * |
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282 * @since 3.0 |
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283 */ |
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284 public Image [] getImages () { |
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285 checkWidget (); |
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286 if (images is null) return new Image [0]; |
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287 Image [] result = new Image [images.length]; |
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288 System.arraycopy (images, 0, result, 0, images.length); |
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289 return result; |
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290 } |
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291 |
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292 /** |
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293 * Returns <code>true</code> if the receiver is currently |
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294 * maximized, and false otherwise. |
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295 * <p> |
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296 * |
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297 * @return the maximized state |
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298 * |
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299 * @exception DWTException <ul> |
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300 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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301 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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302 * </ul> |
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303 * |
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304 * @see #setMaximized |
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305 */ |
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306 public bool getMaximized () { |
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307 checkWidget(); |
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308 return maximized; |
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309 } |
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310 |
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311 /** |
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312 * Returns the receiver's menu bar if one had previously |
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313 * been set, otherwise returns null. |
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314 * |
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315 * @return the menu bar or null |
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316 * |
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317 * @exception DWTException <ul> |
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318 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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319 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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320 * </ul> |
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321 */ |
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322 public Menu getMenuBar () { |
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323 checkWidget(); |
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324 return menuBar; |
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325 } |
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326 |
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327 /** |
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328 * Returns <code>true</code> if the receiver is currently |
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329 * minimized, and false otherwise. |
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330 * <p> |
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331 * |
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332 * @return the minimized state |
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333 * |
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334 * @exception DWTException <ul> |
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335 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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336 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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337 * </ul> |
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338 * |
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339 * @see #setMinimized |
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340 */ |
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341 public bool getMinimized () { |
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342 checkWidget(); |
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343 return minimized; |
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344 } |
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345 |
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346 String getNameText () { |
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347 return getText (); |
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348 } |
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349 |
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350 /** |
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351 * Returns the receiver's text, which is the string that the |
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352 * window manager will typically display as the receiver's |
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353 * <em>title</em>. If the text has not previously been set, |
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354 * returns an empty string. |
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355 * |
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356 * @return the text |
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357 * |
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358 * @exception DWTException <ul> |
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359 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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360 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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361 * </ul> |
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362 */ |
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363 public String getText () { |
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364 checkWidget(); |
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365 return text; |
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366 } |
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367 |
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368 public bool isReparentable () { |
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369 checkWidget(); |
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370 return false; |
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371 } |
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372 |
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373 bool isTabGroup () { |
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374 return true; |
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375 } |
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376 |
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377 bool isTabItem () { |
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378 return false; |
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379 } |
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380 |
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381 Decorations menuShell () { |
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382 return this; |
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383 } |
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384 |
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385 void releaseChildren (bool destroy) { |
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386 if (menuBar !is null) { |
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387 menuBar.dispose (); |
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388 menuBar = null; |
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389 } |
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390 Display display = this.display; |
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391 super.releaseChildren (destroy); |
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392 //TODO |
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393 // Menu [] menus = display.getMenus (this); |
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394 // if (menus !is null) { |
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395 // for (int i=0; i<menus.length; i++) { |
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396 // Menu menu = menus [i]; |
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397 // if (menu !is null && !menu.isDisposed ()) { |
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398 // menu.dispose (); |
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399 // } |
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400 // } |
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401 // menus = null; |
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402 // } |
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403 } |
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404 void releaseWidget () { |
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405 super.releaseWidget (); |
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406 image = null; |
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407 images = null; |
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408 savedFocus = null; |
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409 defaultButton = null; |
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410 } |
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411 |
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412 bool restoreFocus () { |
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413 if (savedFocus !is null && savedFocus.isDisposed ()) savedFocus = null; |
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414 if (savedFocus is null) return false; |
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415 return savedFocus.forceFocus (); |
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416 } |
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417 |
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418 void saveFocus () { |
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419 // int window = OS.GetControlOwner (handle); |
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420 // Control control = display.getFocusControl (window, false); |
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421 // if (control !is null && control !is this && this is control.menuShell ()) { |
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422 // setSavedFocus (control); |
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423 // } |
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424 } |
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425 |
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426 /** |
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427 * If the argument is not null, sets the receiver's default |
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428 * button to the argument, and if the argument is null, sets |
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429 * the receiver's default button to the first button which |
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430 * was set as the receiver's default button (called the |
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431 * <em>saved default button</em>). If no default button had |
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432 * previously been set, or the saved default button was |
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433 * disposed, the receiver's default button will be set to |
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434 * null. |
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435 * <p> |
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436 * The default button is the button that is selected when |
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437 * the receiver is active and the user presses ENTER. |
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438 * </p> |
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439 * |
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440 * @param button the new default button |
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441 * |
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442 * @exception IllegalArgumentException <ul> |
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443 * <li>ERROR_INVALID_ARGUMENT - if the button has been disposed</li> |
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444 * <li>ERROR_INVALID_PARENT - if the control is not in the same widget tree</li> |
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445 * </ul> |
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446 * @exception DWTException <ul> |
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447 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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448 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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449 * </ul> |
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450 */ |
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451 public void setDefaultButton (Button button) { |
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452 checkWidget(); |
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453 if (button !is null) { |
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454 if (button.isDisposed ()) error (DWT.ERROR_INVALID_ARGUMENT); |
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455 if (button.menuShell () !is this) error (DWT.ERROR_INVALID_PARENT); |
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456 if ((button.style & DWT.PUSH) is 0) return; |
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457 } |
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458 if (button is defaultButton) return; |
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459 if (defaultButton !is null) { |
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460 if (!defaultButton.isDisposed ()) defaultButton.setDefault (false); |
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461 } |
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462 defaultButton = button; |
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463 if (defaultButton !is null) { |
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464 if (!defaultButton.isDisposed ()) defaultButton.setDefault (true); |
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465 } |
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466 } |
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|
467 |
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468 /** |
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469 * Sets the receiver's image to the argument, which may |
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470 * be null. The image is typically displayed by the window |
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471 * manager when the instance is marked as iconified, and |
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472 * may also be displayed somewhere in the trim when the |
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473 * instance is in normal or maximized states. |
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474 * |
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475 * @param image the new image (or null) |
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476 * |
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477 * @exception IllegalArgumentException <ul> |
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478 * <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li> |
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479 * </ul> |
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480 * @exception DWTException <ul> |
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481 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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482 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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483 * </ul> |
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484 */ |
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485 public void setImage (Image image) { |
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486 checkWidget(); |
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487 if (image !is null && image.isDisposed()) error(DWT.ERROR_INVALID_ARGUMENT); |
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488 this.image = image; |
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489 if (parent !is null) return; |
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490 // if (display.dockImage is 0) { |
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491 // if (image !is null) { |
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492 // OS.SetApplicationDockTileImage (image.handle); |
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493 // } else { |
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494 // OS.RestoreApplicationDockTileImage (); |
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495 // } |
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496 // } |
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497 } |
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498 |
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499 /** |
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500 * Sets the receiver's images to the argument, which may |
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501 * be an empty array. Images are typically displayed by the |
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502 * window manager when the instance is marked as iconified, |
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503 * and may also be displayed somewhere in the trim when the |
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504 * instance is in normal or maximized states. Depending where |
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505 * the icon is displayed, the platform chooses the icon with |
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506 * the "best" attributes. It is expected that the array will |
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507 * contain the same icon rendered at different sizes, with |
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508 * different depth and transparency attributes. |
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509 * |
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510 * @param images the new image array |
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511 * |
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512 * @exception IllegalArgumentException <ul> |
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513 * <li>ERROR_NULL_ARGUMENT - if the array of images is null</li> |
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514 * <li>ERROR_INVALID_ARGUMENT - if one of the images is null or has been disposed</li> |
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515 * </ul> |
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516 * @exception DWTException <ul> |
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517 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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518 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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519 * </ul> |
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520 * |
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521 * @since 3.0 |
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522 */ |
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523 public void setImages (Image [] images) { |
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524 checkWidget(); |
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525 if (images is null) error(DWT.ERROR_INVALID_ARGUMENT); |
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526 for (int i = 0; i < images.length; i++) { |
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527 if (images [i] is null || images [i].isDisposed ()) error (DWT.ERROR_INVALID_ARGUMENT); |
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528 } |
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529 this.images = images; |
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530 if (parent !is null) return; |
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531 // if (display.dockImage is 0) { |
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532 // if (images !is null && images.length > 1) { |
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533 // Image [] bestImages = new Image [images.length]; |
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534 // System.arraycopy (images, 0, bestImages, 0, images.length); |
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535 // sort (bestImages); |
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536 // images = bestImages; |
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537 // } |
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538 // OS.SetApplicationDockTileImage (images [0].handle); |
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539 // } |
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|
540 } |
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|
541 |
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542 /** |
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543 * Sets the maximized state of the receiver. |
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544 * If the argument is <code>true</code> causes the receiver |
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545 * to switch to the maximized state, and if the argument is |
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546 * <code>false</code> and the receiver was previously maximized, |
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547 * causes the receiver to switch back to either the minimized |
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548 * or normal states. |
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549 * <p> |
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550 * Note: The result of intermixing calls to <code>setMaximized(true)</code> |
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551 * and <code>setMinimized(true)</code> will vary by platform. Typically, |
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552 * the behavior will match the platform user's expectations, but not |
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553 * always. This should be avoided if possible. |
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554 * </p> |
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555 * |
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556 * @param maximized the new maximized state |
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557 * |
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558 * @exception DWTException <ul> |
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559 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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560 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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561 * </ul> |
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562 * |
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563 * @see #setMinimized |
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564 */ |
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565 public void setMaximized (bool maximized) { |
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566 checkWidget(); |
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567 this.maximized = maximized; |
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568 } |
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|
569 |
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|
570 /** |
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571 * Sets the receiver's menu bar to the argument, which |
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572 * may be null. |
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573 * |
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574 * @param menu the new menu bar |
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575 * |
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576 * @exception IllegalArgumentException <ul> |
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577 * <li>ERROR_INVALID_ARGUMENT - if the menu has been disposed</li> |
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578 * <li>ERROR_INVALID_PARENT - if the menu is not in the same widget tree</li> |
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|
579 * </ul> |
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|
580 * @exception DWTException <ul> |
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581 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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582 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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583 * </ul> |
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584 */ |
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585 public void setMenuBar (Menu menu) { |
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586 checkWidget(); |
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587 if (menuBar is menu) return; |
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588 if (menu !is null) { |
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589 if (menu.isDisposed()) error(DWT.ERROR_INVALID_ARGUMENT); |
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590 if ((menu.style & DWT.BAR) is 0) error (DWT.ERROR_MENU_NOT_BAR); |
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591 if (menu.parent !is this) error (DWT.ERROR_INVALID_PARENT); |
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592 } |
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593 menuBar = menu; |
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594 } |
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595 |
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596 /** |
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597 * Sets the minimized stated of the receiver. |
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598 * If the argument is <code>true</code> causes the receiver |
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599 * to switch to the minimized state, and if the argument is |
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600 * <code>false</code> and the receiver was previously minimized, |
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601 * causes the receiver to switch back to either the maximized |
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602 * or normal states. |
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603 * <p> |
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604 * Note: The result of intermixing calls to <code>setMaximized(true)</code> |
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605 * and <code>setMinimized(true)</code> will vary by platform. Typically, |
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606 * the behavior will match the platform user's expectations, but not |
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607 * always. This should be avoided if possible. |
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608 * </p> |
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609 * |
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610 * @param minimized the new maximized state |
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611 * |
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612 * @exception DWTException <ul> |
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613 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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614 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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615 * </ul> |
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616 * |
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617 * @see #setMaximized |
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618 */ |
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619 public void setMinimized (bool minimized) { |
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620 checkWidget(); |
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621 this.minimized = minimized; |
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622 } |
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623 |
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624 void setSavedFocus (Control control) { |
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625 savedFocus = control; |
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626 } |
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627 |
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628 /** |
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629 * Sets the receiver's text, which is the string that the |
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630 * window manager will typically display as the receiver's |
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631 * <em>title</em>, to the argument, which must not be null. |
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632 * |
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633 * @param string the new text |
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634 * |
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635 * @exception IllegalArgumentException <ul> |
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636 * <li>ERROR_NULL_ARGUMENT - if the text is null</li> |
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637 * </ul> |
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638 * @exception DWTException <ul> |
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639 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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640 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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641 * </ul> |
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642 */ |
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643 public void setText (String string) { |
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644 checkWidget(); |
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645 if (string is null) error (DWT.ERROR_NULL_ARGUMENT); |
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646 text = string; |
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647 } |
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648 |
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649 void sort (Image [] images) { |
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650 /* Shell Sort from K&R, pg 108 */ |
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651 int length = images.length; |
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652 if (length <= 1) return; |
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653 ImageData [] datas = new ImageData [length]; |
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654 for (int i = 0; i < length; i++) { |
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655 datas [i] = images [i].getImageData (); |
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656 } |
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657 for (int gap=length/2; gap>0; gap/=2) { |
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658 for (int i=gap; i<length; i++) { |
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659 for (int j=i-gap; j>=0; j-=gap) { |
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660 if (compare (datas [j], datas [j + gap]) >= 0) { |
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661 Image swap = images [j]; |
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662 images [j] = images [j + gap]; |
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663 images [j + gap] = swap; |
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664 ImageData swapData = datas [j]; |
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665 datas [j] = datas [j + gap]; |
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666 datas [j + gap] = swapData; |
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667 } |
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668 } |
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669 } |
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670 } |
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671 } |
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672 |
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673 bool traverseItem (bool next) { |
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674 return false; |
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675 } |
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676 |
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677 bool traverseReturn () { |
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678 if (defaultButton is null || defaultButton.isDisposed ()) return false; |
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679 if (!defaultButton.isVisible () || !defaultButton.isEnabled ()) return false; |
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680 defaultButton.click (); |
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681 return true; |
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682 } |
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683 |
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684 } |