Mercurial > projects > dwt-mac
annotate dwt/widgets/Composite.d @ 3:649b8e223d5a
fix extends
author | Frank Benoit <benoit@tionex.de> |
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date | Wed, 27 Aug 2008 13:48:25 +0200 |
parents | 380af2bdd8e5 |
children | 1a8b3cb347e0 |
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.Composite; |
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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.Point; |
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19 import dwt.graphics.Rectangle; |
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20 import dwt.internal.cocoa.NSArray; |
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21 import dwt.internal.cocoa.NSEvent; |
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22 import dwt.internal.cocoa.NSRect; |
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23 import dwt.internal.cocoa.NSView; |
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24 import dwt.internal.cocoa.OS; |
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25 import dwt.internal.cocoa.SWTScrollView; |
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26 import dwt.internal.cocoa.SWTView; |
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27 |
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28 /** |
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29 * Instances of this class are controls which are capable |
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30 * of containing other controls. |
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31 * <dl> |
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32 * <dt><b>Styles:</b></dt> |
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33 * <dd>NO_BACKGROUND, NO_FOCUS, NO_MERGE_PAINTS, NO_REDRAW_RESIZE, NO_RADIO_GROUP, EMBEDDED, DOUBLE_BUFFERED</dd> |
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34 * <dt><b>Events:</b></dt> |
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35 * <dd>(none)</dd> |
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36 * </dl> |
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37 * <p> |
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38 * Note: The <code>NO_BACKGROUND</code>, <code>NO_FOCUS</code>, <code>NO_MERGE_PAINTS</code>, |
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39 * and <code>NO_REDRAW_RESIZE</code> styles are intended for use with <code>Canvas</code>. |
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40 * They can be used with <code>Composite</code> if you are drawing your own, but their |
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41 * behavior is undefined if they are used with subclasses of <code>Composite</code> other |
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42 * than <code>Canvas</code>. |
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43 * </p><p> |
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44 * Note: The <code>CENTER</code> style, although undefined for composites, has the |
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45 * same value as <code>EMBEDDED</code> (which is used to embed widgets from other |
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46 * widget toolkits into DWT). On some operating systems (GTK, Motif), this may cause |
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47 * the children of this composite to be obscured. The <code>EMBEDDED</code> style |
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48 * is for use by other widget toolkits and should normally never be used. |
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49 * </p><p> |
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50 * This class may be subclassed by custom control implementors |
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51 * who are building controls that are constructed from aggregates |
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52 * of other controls. |
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53 * </p> |
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54 * |
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55 * @see Canvas |
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56 */ |
3 | 57 public class Composite : Scrollable { |
0
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58 Layout layout; |
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59 Control[] tabList; |
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60 int scrolledVisibleRgn, siblingsVisibleRgn; |
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61 int layoutCount, backgroundMode; |
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62 |
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63 Composite () { |
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64 /* Do nothing */ |
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65 } |
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66 |
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67 /** |
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68 * Constructs a new instance of this class given its parent |
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69 * and a style value describing its behavior and appearance. |
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70 * <p> |
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71 * The style value is either one of the style constants defined in |
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72 * class <code>DWT</code> which is applicable to instances of this |
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73 * class, or must be built by <em>bitwise OR</em>'ing together |
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74 * (that is, using the <code>int</code> "|" operator) two or more |
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75 * of those <code>DWT</code> style constants. The class description |
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76 * lists the style constants that are applicable to the class. |
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77 * Style bits are also inherited from superclasses. |
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78 * </p> |
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79 * |
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80 * @param parent a widget which will be the parent of the new instance (cannot be null) |
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81 * @param style the style of widget to construct |
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82 * |
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83 * @exception IllegalArgumentException <ul> |
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84 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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85 * </ul> |
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86 * @exception DWTException <ul> |
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87 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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88 * </ul> |
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89 * |
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90 * @see DWT#NO_BACKGROUND |
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91 * @see DWT#NO_FOCUS |
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92 * @see DWT#NO_MERGE_PAINTS |
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93 * @see DWT#NO_REDRAW_RESIZE |
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94 * @see DWT#NO_RADIO_GROUP |
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95 * @see Widget#getStyle |
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96 */ |
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97 public Composite (Composite parent, int style) { |
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98 super (parent, style); |
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99 } |
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100 |
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101 Control [] _getChildren () { |
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102 NSArray views = contentView().subviews(); |
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103 int count = views.count(); |
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104 Control [] children = new Control [count]; |
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105 int j = 0; |
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106 for (int i=0; i<count; i++){ |
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107 int tag = new NSView(views.objectAtIndex(i)).tag(); |
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108 if (tag !is 0 && tag !is -1) { |
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109 Object widget = OS.JNIGetObject(tag); |
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110 if (widget !is null && widget !is this) { |
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111 if (widget instanceof Control) { |
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112 children [j++] = (Control) widget; |
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113 } |
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114 } |
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115 } |
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116 } |
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117 if (j is count) return children; |
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118 Control [] newChildren = new Control [j]; |
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119 System.arraycopy (children, 0, newChildren, 0, j); |
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120 return newChildren; |
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121 } |
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122 |
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123 Control [] _getTabList () { |
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124 if (tabList is null) return null; |
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125 int count = 0; |
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126 for (int i=0; i<tabList.length; i++) { |
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127 if (!tabList [i].isDisposed ()) count++; |
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128 } |
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129 if (count is tabList.length) return tabList; |
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130 Control [] newList = new Control [count]; |
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131 int index = 0; |
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132 for (int i=0; i<tabList.length; i++) { |
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133 if (!tabList [i].isDisposed ()) { |
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134 newList [index++] = tabList [i]; |
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135 } |
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136 } |
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137 tabList = newList; |
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138 return tabList; |
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139 } |
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140 |
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141 bool acceptsFirstResponder () { |
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142 if ((state & CANVAS) !is 0) { |
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143 return ((style & DWT.NO_FOCUS) is 0); |
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144 } |
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145 return super.acceptsFirstResponder (); |
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146 } |
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147 |
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148 |
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149 /** |
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150 * Clears any data that has been cached by a Layout for all widgets that |
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151 * are in the parent hierarchy of the changed control up to and including the |
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152 * receiver. If an ancestor does not have a layout, it is skipped. |
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153 * |
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154 * @param changed an array of controls that changed state and require a recalculation of size |
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155 * |
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156 * @exception IllegalArgumentException <ul> |
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157 * <li>ERROR_INVALID_ARGUMENT - if the changed array is null any of its controls are null or have been disposed</li> |
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158 * <li>ERROR_INVALID_PARENT - if any control in changed is not in the widget tree of the receiver</li> |
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159 * </ul> |
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160 * @exception DWTException <ul> |
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161 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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162 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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163 * </ul> |
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164 * |
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165 * @since 3.1 |
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166 */ |
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167 public void changed (Control[] changed) { |
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168 checkWidget (); |
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169 if (changed is null) error (DWT.ERROR_INVALID_ARGUMENT); |
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170 for (int i=0; i<changed.length; i++) { |
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171 Control control = changed [i]; |
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172 if (control is null) error (DWT.ERROR_INVALID_ARGUMENT); |
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173 if (control.isDisposed ()) error (DWT.ERROR_INVALID_ARGUMENT); |
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174 bool ancestor = false; |
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175 Composite composite = control.parent; |
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176 while (composite !is null) { |
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177 ancestor = composite is this; |
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178 if (ancestor) break; |
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179 composite = composite.parent; |
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180 } |
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181 if (!ancestor) error (DWT.ERROR_INVALID_PARENT); |
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182 } |
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183 for (int i=0; i<changed.length; i++) { |
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184 Control child = changed [i]; |
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185 Composite composite = child.parent; |
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186 while (child !is this) { |
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187 if (composite.layout is null || !composite.layout.flushCache (child)) { |
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188 composite.state |= LAYOUT_CHANGED; |
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189 } |
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190 child = composite; |
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191 composite = child.parent; |
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192 } |
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193 } |
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194 } |
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195 |
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196 public Point computeSize (int wHint, int hHint, bool changed) { |
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197 checkWidget(); |
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198 Point size; |
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199 if (layout !is null) { |
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200 if ((wHint is DWT.DEFAULT) || (hHint is DWT.DEFAULT)) { |
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201 changed |= (state & LAYOUT_CHANGED) !is 0; |
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202 size = layout.computeSize (this, wHint, hHint, changed); |
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203 state &= ~LAYOUT_CHANGED; |
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204 } else { |
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205 size = new Point (wHint, hHint); |
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206 } |
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207 } else { |
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208 size = minimumSize (wHint, hHint, changed); |
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209 } |
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210 if (size.x is 0) size.x = DEFAULT_WIDTH; |
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211 if (size.y is 0) size.y = DEFAULT_HEIGHT; |
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212 if (wHint !is DWT.DEFAULT) size.x = wHint; |
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213 if (hHint !is DWT.DEFAULT) size.y = hHint; |
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214 Rectangle trim = computeTrim (0, 0, size.x, size.y); |
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215 return new Point (trim.width, trim.height); |
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216 } |
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217 |
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218 protected void checkSubclass () { |
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219 /* Do nothing - Subclassing is allowed */ |
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220 } |
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221 |
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222 Control [] computeTabList () { |
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223 Control result [] = super.computeTabList (); |
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224 if (result.length is 0) return result; |
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225 Control [] list = tabList !is null ? _getTabList () : _getChildren (); |
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226 for (int i=0; i<list.length; i++) { |
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227 Control child = list [i]; |
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228 Control [] childList = child.computeTabList (); |
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229 if (childList.length !is 0) { |
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230 Control [] newResult = new Control [result.length + childList.length]; |
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231 System.arraycopy (result, 0, newResult, 0, result.length); |
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232 System.arraycopy (childList, 0, newResult, result.length, childList.length); |
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233 result = newResult; |
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234 } |
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235 } |
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236 return result; |
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237 } |
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238 |
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239 NSView contentView () { |
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240 return view; |
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241 } |
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242 |
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243 void createHandle () { |
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244 createHandle (parent.contentView()); |
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245 } |
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246 |
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247 void createHandle (NSView parent) { |
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248 state |= CANVAS; |
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249 NSRect rect = new NSRect(); |
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250 if ((style & (DWT.V_SCROLL | DWT.H_SCROLL)) !is 0 || hasBorder ()) { |
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251 SWTScrollView scrollWidget = (SWTScrollView)new SWTScrollView().alloc(); |
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252 scrollWidget.initWithFrame (rect); |
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253 scrollWidget.setDrawsBackground(false); |
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254 if ((style & DWT.H_SCROLL) !is 0) scrollWidget.setHasHorizontalScroller(true); |
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255 if ((style & DWT.V_SCROLL) !is 0) scrollWidget.setHasVerticalScroller(true); |
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256 scrollWidget.setBorderType(hasBorder() ? OS.NSBezelBorder : OS.NSNoBorder); |
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257 scrollWidget.setTag(jniRef); |
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258 scrollView = scrollWidget; |
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259 rect.width = rect.height = 100000; |
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260 } |
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261 SWTView widget = (SWTView)new SWTView().alloc(); |
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262 widget.initWithFrame (rect); |
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263 // widget.setFocusRingType(OS.NSFocusRingTypeExterior); |
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264 widget.setTag(jniRef); |
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265 view = widget; |
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266 if (scrollView !is null) { |
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267 // view.setAutoresizingMask (OS.NSViewWidthSizable | OS.NSViewHeightSizable); |
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268 scrollView.setDocumentView(view); |
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269 if (parent !is null) parent.addSubview_(scrollView); |
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270 } else { |
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271 if (parent !is null) parent.addSubview_(view); |
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272 } |
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273 } |
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274 |
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275 Composite findDeferredControl () { |
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276 return layoutCount > 0 ? this : parent.findDeferredControl (); |
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277 } |
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278 |
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279 Menu [] findMenus (Control control) { |
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280 if (control is this) return new Menu [0]; |
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281 Menu result [] = super.findMenus (control); |
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282 Control [] children = _getChildren (); |
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283 for (int i=0; i<children.length; i++) { |
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284 Control child = children [i]; |
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285 Menu [] menuList = child.findMenus (control); |
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286 if (menuList.length !is 0) { |
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287 Menu [] newResult = new Menu [result.length + menuList.length]; |
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288 System.arraycopy (result, 0, newResult, 0, result.length); |
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289 System.arraycopy (menuList, 0, newResult, result.length, menuList.length); |
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290 result = newResult; |
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291 } |
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292 } |
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293 return result; |
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294 } |
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295 |
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296 void fixChildren (Shell newShell, Shell oldShell, Decorations newDecorations, Decorations oldDecorations, Menu [] menus) { |
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297 super.fixChildren (newShell, oldShell, newDecorations, oldDecorations, menus); |
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298 Control [] children = _getChildren (); |
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299 for (int i=0; i<children.length; i++) { |
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300 children [i].fixChildren (newShell, oldShell, newDecorations, oldDecorations, menus); |
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301 } |
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302 } |
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303 |
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304 void fixTabList (Control control) { |
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305 if (tabList is null) return; |
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306 int count = 0; |
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307 for (int i=0; i<tabList.length; i++) { |
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308 if (tabList [i] is control) count++; |
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309 } |
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310 if (count is 0) return; |
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311 Control [] newList = null; |
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312 int length = tabList.length - count; |
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313 if (length !is 0) { |
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314 newList = new Control [length]; |
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315 int index = 0; |
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316 for (int i=0; i<tabList.length; i++) { |
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317 if (tabList [i] !is control) { |
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318 newList [index++] = tabList [i]; |
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319 } |
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320 } |
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321 } |
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322 tabList = newList; |
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323 } |
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324 |
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325 /** |
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326 * Returns the receiver's background drawing mode. This |
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327 * will be one of the following constants defined in class |
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328 * <code>DWT</code>: |
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329 * <code>INHERIT_NONE</code>, <code>INHERIT_DEFAULT</code>, |
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330 * <code>INHERTIT_FORCE</code>. |
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331 * |
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332 * @return the background mode |
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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 DWT |
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340 * |
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341 * @since 3.2 |
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342 */ |
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343 public int getBackgroundMode () { |
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344 checkWidget (); |
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345 return backgroundMode; |
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346 } |
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347 |
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348 /** |
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349 * Returns a (possibly empty) array containing the receiver's children. |
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350 * Children are returned in the order that they are drawn. The topmost |
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351 * control appears at the beginning of the array. Subsequent controls |
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352 * draw beneath this control and appear later in the array. |
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353 * <p> |
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354 * Note: This is not the actual structure used by the receiver |
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355 * to maintain its list of children, so modifying the array will |
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356 * not affect the receiver. |
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357 * </p> |
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358 * |
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359 * @return an array of children |
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360 * |
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361 * @see Control#moveAbove |
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362 * @see Control#moveBelow |
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363 * |
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364 * @exception DWTException <ul> |
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365 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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366 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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367 * </ul> |
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368 */ |
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369 public Control [] getChildren () { |
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370 checkWidget(); |
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371 return _getChildren (); |
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372 } |
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373 |
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374 int getChildrenCount () { |
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375 /* |
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376 * NOTE: The current implementation will count |
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377 * non-registered children. |
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378 */ |
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379 // short [] count = new short [1]; |
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380 // OS.CountSubControls (handle, count); |
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381 // return count [0]; |
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382 return 0; |
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383 } |
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384 |
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385 /** |
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386 * Returns layout which is associated with the receiver, or |
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387 * null if one has not been set. |
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388 * |
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389 * @return the receiver's layout or null |
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390 * |
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391 * @exception DWTException <ul> |
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392 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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393 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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394 * </ul> |
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395 */ |
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396 public Layout getLayout () { |
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397 checkWidget(); |
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398 return layout; |
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399 } |
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400 |
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401 /** |
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402 * Returns <code>true</code> if the receiver has deferred |
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403 * the performing of layout, and <code>false</code> otherwise. |
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404 * |
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405 * @return the receiver's deferred layout state |
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406 * |
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407 * @exception DWTException <ul> |
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408 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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409 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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410 * </ul> |
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411 * |
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412 * @see #setLayoutDeferred(bool) |
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413 * @see #isLayoutDeferred() |
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414 * |
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415 * @since 3.1 |
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416 */ |
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417 public bool getLayoutDeferred () { |
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418 checkWidget (); |
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419 return layoutCount > 0 ; |
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420 } |
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421 |
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422 /** |
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423 * Gets the (possibly empty) tabbing order for the control. |
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424 * |
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425 * @return tabList the ordered list of controls representing the tab order |
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426 * |
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427 * @exception DWTException <ul> |
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428 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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429 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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430 * </ul> |
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431 * |
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432 * @see #setTabList |
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433 */ |
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434 public Control [] getTabList () { |
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435 checkWidget (); |
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436 Control [] tabList = _getTabList (); |
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437 if (tabList is null) { |
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438 int count = 0; |
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439 Control [] list =_getChildren (); |
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440 for (int i=0; i<list.length; i++) { |
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441 if (list [i].isTabGroup ()) count++; |
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442 } |
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443 tabList = new Control [count]; |
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444 int index = 0; |
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445 for (int i=0; i<list.length; i++) { |
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446 if (list [i].isTabGroup ()) { |
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447 tabList [index++] = list [i]; |
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448 } |
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449 } |
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450 } |
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451 return tabList; |
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452 } |
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453 |
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454 bool hooksKeys () { |
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455 return hooks (DWT.KeyDown) || hooks (DWT.KeyUp); |
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456 } |
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457 |
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458 /** |
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459 * Returns <code>true</code> if the receiver or any ancestor |
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460 * up to and including the receiver's nearest ancestor shell |
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461 * has deferred the performing of layouts. Otherwise, <code>false</code> |
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462 * is returned. |
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463 * |
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464 * @return the receiver's deferred layout state |
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465 * |
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466 * @exception DWTException <ul> |
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467 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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468 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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469 * </ul> |
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470 * |
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471 * @see #setLayoutDeferred(bool) |
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472 * @see #getLayoutDeferred() |
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473 * |
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474 * @since 3.1 |
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475 */ |
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476 public bool isLayoutDeferred () { |
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477 checkWidget (); |
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478 return findDeferredControl () !is null; |
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479 } |
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480 |
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481 bool isTabGroup () { |
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482 if ((state & CANVAS) !is 0) return true; |
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483 return super.isTabGroup (); |
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484 } |
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485 |
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486 /** |
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487 * If the receiver has a layout, asks the layout to <em>lay out</em> |
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488 * (that is, set the size and location of) the receiver's children. |
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489 * If the receiver does not have a layout, do nothing. |
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490 * <p> |
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491 * This is equivalent to calling <code>layout(true)</code>. |
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492 * </p> |
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493 * <p> |
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494 * Note: Layout is different from painting. If a child is |
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495 * moved or resized such that an area in the parent is |
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496 * exposed, then the parent will paint. If no child is |
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497 * affected, the parent will not paint. |
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498 * </p> |
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499 * |
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500 * @exception DWTException <ul> |
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501 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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502 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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503 * </ul> |
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504 */ |
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505 public void layout () { |
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506 checkWidget (); |
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507 layout (true); |
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508 } |
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509 |
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510 /** |
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511 * If the receiver has a layout, asks the layout to <em>lay out</em> |
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512 * (that is, set the size and location of) the receiver's children. |
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513 * If the argument is <code>true</code> the layout must not rely |
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514 * on any information it has cached about the immediate children. If it |
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515 * is <code>false</code> the layout may (potentially) optimize the |
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516 * work it is doing by assuming that none of the receiver's |
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517 * children has changed state since the last layout. |
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518 * If the receiver does not have a layout, do nothing. |
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519 * <p> |
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520 * If a child is resized as a result of a call to layout, the |
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521 * resize event will invoke the layout of the child. The layout |
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522 * will cascade down through all child widgets in the receiver's widget |
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523 * tree until a child is encountered that does not resize. Note that |
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524 * a layout due to a resize will not flush any cached information |
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525 * (same as <code>layout(false)</code>). |
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526 * </p> |
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527 * <p> |
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528 * Note: Layout is different from painting. If a child is |
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529 * moved or resized such that an area in the parent is |
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530 * exposed, then the parent will paint. If no child is |
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531 * affected, the parent will not paint. |
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532 * </p> |
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533 * |
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534 * @param changed <code>true</code> if the layout must flush its caches, and <code>false</code> otherwise |
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535 * |
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536 * @exception DWTException <ul> |
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537 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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538 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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539 * </ul> |
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540 */ |
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541 public void layout (bool changed) { |
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542 checkWidget (); |
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543 if (layout is null) return; |
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544 layout (changed, false); |
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545 } |
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546 |
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547 /** |
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548 * If the receiver has a layout, asks the layout to <em>lay out</em> |
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549 * (that is, set the size and location of) the receiver's children. |
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550 * If the changed argument is <code>true</code> the layout must not rely |
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551 * on any information it has cached about its children. If it |
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552 * is <code>false</code> the layout may (potentially) optimize the |
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553 * work it is doing by assuming that none of the receiver's |
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554 * children has changed state since the last layout. |
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555 * If the all argument is <code>true</code> the layout will cascade down |
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556 * through all child widgets in the receiver's widget tree, regardless of |
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557 * whether the child has changed size. The changed argument is applied to |
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558 * all layouts. If the all argument is <code>false</code>, the layout will |
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559 * <em>not</em> cascade down through all child widgets in the receiver's widget |
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560 * tree. However, if a child is resized as a result of a call to layout, the |
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561 * resize event will invoke the layout of the child. Note that |
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562 * a layout due to a resize will not flush any cached information |
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563 * (same as <code>layout(false)</code>). |
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564 * </p> |
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565 * <p> |
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566 * Note: Layout is different from painting. If a child is |
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567 * moved or resized such that an area in the parent is |
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568 * exposed, then the parent will paint. If no child is |
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569 * affected, the parent will not paint. |
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570 * </p> |
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|
571 * |
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572 * @param changed <code>true</code> if the layout must flush its caches, and <code>false</code> otherwise |
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573 * @param all <code>true</code> if all children in the receiver's widget tree should be laid out, and <code>false</code> otherwise |
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574 * |
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575 * @exception DWTException <ul> |
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576 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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577 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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578 * </ul> |
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579 * |
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580 * @since 3.1 |
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581 */ |
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582 public void layout (bool changed, bool all) { |
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583 checkWidget (); |
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584 if (layout is null && !all) return; |
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585 markLayout (changed, all); |
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586 updateLayout (all); |
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587 } |
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588 |
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589 /** |
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590 * Forces a lay out (that is, sets the size and location) of all widgets that |
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591 * are in the parent hierarchy of the changed control up to and including the |
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592 * receiver. The layouts in the hierarchy must not rely on any information |
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593 * cached about the changed control or any of its ancestors. The layout may |
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594 * (potentially) optimize the work it is doing by assuming that none of the |
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595 * peers of the changed control have changed state since the last layout. |
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596 * If an ancestor does not have a layout, skip it. |
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597 * <p> |
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598 * Note: Layout is different from painting. If a child is |
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599 * moved or resized such that an area in the parent is |
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600 * exposed, then the parent will paint. If no child is |
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601 * affected, the parent will not paint. |
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602 * </p> |
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603 * |
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604 * @param changed a control that has had a state change which requires a recalculation of its size |
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605 * |
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606 * @exception IllegalArgumentException <ul> |
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607 * <li>ERROR_INVALID_ARGUMENT - if the changed array is null any of its controls are null or have been disposed</li> |
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608 * <li>ERROR_INVALID_PARENT - if any control in changed is not in the widget tree of the receiver</li> |
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609 * </ul> |
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610 * @exception DWTException <ul> |
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611 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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612 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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613 * </ul> |
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614 * |
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615 * @since 3.1 |
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616 */ |
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617 public void layout (Control [] changed) { |
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618 checkWidget (); |
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619 if (changed is null) error (DWT.ERROR_INVALID_ARGUMENT); |
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620 for (int i=0; i<changed.length; i++) { |
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621 Control control = changed [i]; |
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622 if (control is null) error (DWT.ERROR_INVALID_ARGUMENT); |
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623 if (control.isDisposed ()) error (DWT.ERROR_INVALID_ARGUMENT); |
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624 bool ancestor = false; |
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625 Composite composite = control.parent; |
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626 while (composite !is null) { |
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627 ancestor = composite is this; |
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628 if (ancestor) break; |
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629 composite = composite.parent; |
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630 } |
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631 if (!ancestor) error (DWT.ERROR_INVALID_PARENT); |
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632 } |
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633 int updateCount = 0; |
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634 Composite [] update = new Composite [16]; |
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635 for (int i=0; i<changed.length; i++) { |
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636 Control child = changed [i]; |
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637 Composite composite = child.parent; |
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638 while (child !is this) { |
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639 if (composite.layout !is null) { |
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640 composite.state |= LAYOUT_NEEDED; |
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641 if (!composite.layout.flushCache (child)) { |
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642 composite.state |= LAYOUT_CHANGED; |
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643 } |
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644 } |
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645 if (updateCount is update.length) { |
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646 Composite [] newUpdate = new Composite [update.length + 16]; |
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647 System.arraycopy (update, 0, newUpdate, 0, update.length); |
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648 update = newUpdate; |
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649 } |
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650 child = update [updateCount++] = composite; |
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651 composite = child.parent; |
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652 } |
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|
653 } |
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654 for (int i=updateCount-1; i>=0; i--) { |
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655 update [i].updateLayout (false); |
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656 } |
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657 } |
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658 |
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659 void markLayout (bool changed, bool all) { |
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660 if (layout !is null) { |
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661 state |= LAYOUT_NEEDED; |
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662 if (changed) state |= LAYOUT_CHANGED; |
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663 } |
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664 if (all) { |
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665 Control [] children = _getChildren (); |
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666 for (int i=0; i<children.length; i++) { |
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667 children [i].markLayout (changed, all); |
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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 Point minimumSize (int wHint, int Hint, bool changed) { |
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673 Control [] children = _getChildren (); |
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674 int width = 0, height = 0; |
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675 for (int i=0; i<children.length; i++) { |
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676 Rectangle rect = children [i].getBounds (); |
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677 width = Math.max (width, rect.x + rect.width); |
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678 height = Math.max (height, rect.y + rect.height); |
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679 } |
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680 return new Point (width, height); |
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681 } |
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682 |
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683 void releaseChildren (bool destroy) { |
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684 Control [] children = _getChildren (); |
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685 for (int i=0; i<children.length; i++) { |
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686 Control child = children [i]; |
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687 if (child !is null && !child.isDisposed ()) { |
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688 child.release (false); |
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689 } |
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690 } |
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691 super.releaseChildren (destroy); |
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692 } |
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693 |
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694 void releaseWidget () { |
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695 super.releaseWidget (); |
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696 layout = null; |
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697 tabList = null; |
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698 } |
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699 |
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700 void removeControl (Control control) { |
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701 fixTabList (control); |
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702 } |
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703 |
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704 /** |
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705 * Sets the background drawing mode to the argument which should |
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706 * be one of the following constants defined in class <code>DWT</code>: |
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707 * <code>INHERIT_NONE</code>, <code>INHERIT_DEFAULT</code>, |
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708 * <code>INHERIT_FORCE</code>. |
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709 * |
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710 * @param mode the new background mode |
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711 * |
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712 * @exception DWTException <ul> |
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713 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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714 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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715 * </ul> |
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716 * |
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717 * @see DWT |
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718 * |
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719 * @since 3.2 |
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720 */ |
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721 public void setBackgroundMode (int mode) { |
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722 checkWidget (); |
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723 backgroundMode = mode; |
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724 Control [] children = _getChildren (); |
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725 for (int i = 0; i < children.length; i++) { |
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726 children [i].updateBackgroundMode (); |
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727 } |
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728 } |
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729 |
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730 int setBounds (int x, int y, int width, int height, bool move, bool resize) { |
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731 int result = super.setBounds (x, y, width, height, move, resize); |
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732 if (layout !is null && (result & RESIZED) !is 0) { |
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733 markLayout (false, false); |
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734 updateLayout (false); |
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735 } |
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736 return result; |
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737 } |
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738 |
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739 public bool setFocus () { |
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740 checkWidget (); |
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741 Control [] children = _getChildren (); |
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742 for (int i= 0; i < children.length; i++) { |
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743 if (children [i].setFocus ()) return true; |
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744 } |
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745 return super.setFocus (); |
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746 } |
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|
747 |
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748 /** |
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749 * Sets the layout which is associated with the receiver to be |
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750 * the argument which may be null. |
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751 * |
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752 * @param layout the receiver's new layout or null |
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753 * |
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754 * @exception DWTException <ul> |
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755 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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756 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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757 * </ul> |
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758 */ |
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759 public void setLayout (Layout layout) { |
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760 checkWidget(); |
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761 this.layout = layout; |
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|
762 } |
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|
763 |
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|
764 /** |
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765 * If the argument is <code>true</code>, causes subsequent layout |
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766 * operations in the receiver or any of its children to be ignored. |
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767 * No layout of any kind can occur in the receiver or any of its |
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768 * children until the flag is set to false. |
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769 * Layout operations that occurred while the flag was |
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770 * <code>true</code> are remembered and when the flag is set to |
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771 * <code>false</code>, the layout operations are performed in an |
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772 * optimized manner. Nested calls to this method are stacked. |
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773 * |
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774 * @param defer the new defer state |
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775 * |
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776 * @exception DWTException <ul> |
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777 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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778 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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779 * </ul> |
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780 * |
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781 * @see #layout(bool) |
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782 * @see #layout(Control[]) |
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783 * |
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784 * @since 3.1 |
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785 */ |
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786 public void setLayoutDeferred (bool defer) { |
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787 if (!defer) { |
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788 if (--layoutCount is 0) { |
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789 if ((state & LAYOUT_CHILD) !is 0 || (state & LAYOUT_NEEDED) !is 0) { |
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790 updateLayout (true); |
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|
791 } |
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|
792 } |
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793 } else { |
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|
794 layoutCount++; |
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795 } |
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|
796 } |
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|
797 |
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|
798 |
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799 bool setScrollBarVisible (ScrollBar bar, bool visible) { |
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800 bool changed = super.setScrollBarVisible (bar, visible); |
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801 if (changed && layout !is null) { |
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802 markLayout (false, false); |
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803 updateLayout (false); |
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|
804 } |
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805 return changed; |
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806 } |
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|
807 |
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|
808 bool setTabGroupFocus () { |
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809 if (isTabItem ()) return setTabItemFocus (); |
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810 bool takeFocus = (style & DWT.NO_FOCUS) is 0; |
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811 if ((state & CANVAS) !is 0) takeFocus = hooksKeys (); |
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812 if (takeFocus && setTabItemFocus ()) return true; |
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813 Control [] children = _getChildren (); |
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814 for (int i=0; i<children.length; i++) { |
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815 Control child = children [i]; |
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816 if (child.isTabItem () && child.setTabItemFocus ()) return true; |
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817 } |
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818 return false; |
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819 } |
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820 |
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821 /** |
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822 * Sets the tabbing order for the specified controls to |
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823 * match the order that they occur in the argument list. |
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824 * |
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825 * @param tabList the ordered list of controls representing the tab order or null |
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826 * |
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827 * @exception IllegalArgumentException <ul> |
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828 * <li>ERROR_INVALID_ARGUMENT - if a widget in the tabList is null or has been disposed</li> |
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829 * <li>ERROR_INVALID_PARENT - if widget in the tabList is not in the same widget tree</li> |
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830 * </ul> |
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831 * @exception DWTException <ul> |
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832 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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833 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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834 * </ul> |
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835 */ |
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836 public void setTabList (Control [] tabList) { |
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837 checkWidget (); |
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838 if (tabList !is null) { |
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839 for (int i=0; i<tabList.length; i++) { |
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840 Control control = tabList [i]; |
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841 if (control is null) error (DWT.ERROR_INVALID_ARGUMENT); |
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842 if (control.isDisposed ()) error (DWT.ERROR_INVALID_ARGUMENT); |
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843 if (control.parent !is this) error (DWT.ERROR_INVALID_PARENT); |
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844 } |
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845 Control [] newList = new Control [tabList.length]; |
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846 System.arraycopy (tabList, 0, newList, 0, tabList.length); |
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847 tabList = newList; |
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848 } |
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849 this.tabList = tabList; |
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850 } |
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851 |
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852 int traversalCode (int key, NSEvent theEvent) { |
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853 if ((state & CANVAS) !is 0) { |
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854 if ((style & DWT.NO_FOCUS) !is 0) return 0; |
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855 if (hooksKeys ()) return 0; |
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856 } |
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857 return super.traversalCode (key, theEvent); |
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858 } |
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859 |
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860 void updateBackgroundMode () { |
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861 super.updateBackgroundMode (); |
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862 Control [] children = _getChildren (); |
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863 for (int i = 0; i < children.length; i++) { |
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864 children [i].updateBackgroundMode (); |
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865 } |
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866 } |
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867 |
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868 void updateLayout (bool all) { |
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869 Composite parent = findDeferredControl (); |
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870 if (parent !is null) { |
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871 parent.state |= LAYOUT_CHILD; |
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872 return; |
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873 } |
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874 if ((state & LAYOUT_NEEDED) !is 0) { |
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875 bool changed = (state & LAYOUT_CHANGED) !is 0; |
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876 state &= ~(LAYOUT_NEEDED | LAYOUT_CHANGED); |
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877 layout.layout (this, changed); |
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878 } |
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879 if (all) { |
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880 state &= ~LAYOUT_CHILD; |
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881 Control [] children = _getChildren (); |
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882 for (int i=0; i<children.length; i++) { |
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883 children [i].updateLayout (all); |
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884 } |
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885 } |
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886 } |
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887 |
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888 } |