Mercurial > projects > dwt-mac
annotate dwt/widgets/Composite.d @ 61:c74ba20de292
Fix: The application responds to events now
author | Jacob Carlborg <doob@me.com> |
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date | Tue, 23 Dec 2008 00:35:24 +0100 |
parents | 62202ce0039f |
children | c7f7f4d7091a |
rev | line source |
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45 | 1 /******************************************************************************* |
2 * Copyright (c) 2000, 2008 IBM Corporation and others. | |
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3 * All rights reserved. This program and the accompanying materials |
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4 * are made available under the terms of the Eclipse Public License v1.0 |
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5 * which accompanies this distribution, and is available at |
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6 * http://www.eclipse.org/legal/epl-v10.html |
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7 * |
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8 * Contributors: |
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9 * IBM Corporation - initial API and implementation |
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10 * |
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11 * Port to the D programming language: |
45 | 12 * Jacob Carlborg <doob@me.com> |
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13 *******************************************************************************/ |
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14 module dwt.widgets.Composite; |
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15 |
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16 |
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17 import dwt.DWT; |
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18 import dwt.DWTException; |
45 | 19 import dwt.accessibility.ACC; |
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20 import dwt.graphics.Point; |
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21 import dwt.graphics.Rectangle; |
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22 import dwt.internal.cocoa.NSArray; |
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23 import dwt.internal.cocoa.NSEvent; |
45 | 24 import dwt.internal.cocoa.NSGraphicsContext; |
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25 import dwt.internal.cocoa.NSRect; |
45 | 26 import dwt.internal.cocoa.NSScrollView; |
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27 import dwt.internal.cocoa.NSView; |
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28 import dwt.internal.cocoa.OS; |
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29 import dwt.internal.cocoa.SWTScrollView; |
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30 import dwt.internal.cocoa.SWTView; |
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31 import cocoa = dwt.internal.cocoa.id; |
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32 |
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33 import dwt.dwthelper.utils; |
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34 import Carbon = dwt.internal.c.Carbon; |
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35 import dwt.internal.objc.cocoa.Cocoa; |
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36 import objc = dwt.internal.objc.runtime; |
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37 import dwt.widgets.Control; |
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38 import dwt.widgets.Decorations; |
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39 import dwt.widgets.Display; |
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40 import dwt.widgets.Event; |
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41 import dwt.widgets.Layout; |
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42 import dwt.widgets.Menu; |
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43 import dwt.widgets.Scrollable; |
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44 import dwt.widgets.ScrollBar; |
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45 import dwt.widgets.Shell; |
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46 import dwt.widgets.Widget; |
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47 |
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48 /** |
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49 * Instances of this class are controls which are capable |
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50 * of containing other controls. |
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51 * <dl> |
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52 * <dt><b>Styles:</b></dt> |
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53 * <dd>NO_BACKGROUND, NO_FOCUS, NO_MERGE_PAINTS, NO_REDRAW_RESIZE, NO_RADIO_GROUP, EMBEDDED, DOUBLE_BUFFERED</dd> |
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54 * <dt><b>Events:</b></dt> |
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55 * <dd>(none)</dd> |
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56 * </dl> |
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57 * <p> |
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58 * Note: The <code>NO_BACKGROUND</code>, <code>NO_FOCUS</code>, <code>NO_MERGE_PAINTS</code>, |
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59 * and <code>NO_REDRAW_RESIZE</code> styles are intended for use with <code>Canvas</code>. |
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60 * They can be used with <code>Composite</code> if you are drawing your own, but their |
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61 * behavior is undefined if they are used with subclasses of <code>Composite</code> other |
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62 * than <code>Canvas</code>. |
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63 * </p><p> |
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64 * Note: The <code>CENTER</code> style, although undefined for composites, has the |
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65 * same value as <code>EMBEDDED</code> (which is used to embed widgets from other |
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66 * widget toolkits into DWT). On some operating systems (GTK, Motif), this may cause |
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67 * the children of this composite to be obscured. The <code>EMBEDDED</code> style |
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68 * is for use by other widget toolkits and should normally never be used. |
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69 * </p><p> |
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70 * This class may be subclassed by custom control implementors |
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71 * who are building controls that are constructed from aggregates |
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72 * of other controls. |
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73 * </p> |
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74 * |
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75 * @see Canvas |
45 | 76 * @see <a href="http://www.eclipse.org/swt/snippets/#composite">Composite snippets</a> |
77 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> | |
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78 */ |
3 | 79 public class Composite : Scrollable { |
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80 Layout layout_; |
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81 Control[] tabList; |
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82 int layoutCount, backgroundMode; |
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83 |
5 | 84 this () { |
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85 /* Do nothing */ |
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86 } |
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87 |
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88 /** |
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89 * Constructs a new instance of this class given its parent |
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90 * and a style value describing its behavior and appearance. |
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91 * <p> |
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92 * The style value is either one of the style constants defined in |
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93 * class <code>DWT</code> which is applicable to instances of this |
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94 * class, or must be built by <em>bitwise OR</em>'ing together |
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95 * (that is, using the <code>int</code> "|" operator) two or more |
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96 * of those <code>DWT</code> style constants. The class description |
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97 * lists the style constants that are applicable to the class. |
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98 * Style bits are also inherited from superclasses. |
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99 * </p> |
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100 * |
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101 * @param parent a widget which will be the parent of the new instance (cannot be null) |
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102 * @param style the style of widget to construct |
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103 * |
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104 * @exception IllegalArgumentException <ul> |
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105 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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106 * </ul> |
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107 * @exception DWTException <ul> |
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108 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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109 * </ul> |
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110 * |
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111 * @see DWT#NO_BACKGROUND |
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112 * @see DWT#NO_FOCUS |
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113 * @see DWT#NO_MERGE_PAINTS |
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114 * @see DWT#NO_REDRAW_RESIZE |
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115 * @see DWT#NO_RADIO_GROUP |
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116 * @see Widget#getStyle |
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117 */ |
5 | 118 public this (Composite parent, int style) { |
0
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119 super (parent, style); |
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120 } |
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121 |
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122 Control [] _getChildren () { |
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123 NSArray views = contentView().subviews(); |
45 | 124 int count = cast(int)/*64*/views.count(); |
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125 Control [] children = new Control [count]; |
45 | 126 if (count is 0) return children; |
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127 int j = 0; |
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128 for (int i=0; i<count; i++){ |
45 | 129 Widget widget = display.getWidget (views.objectAtIndex (count - i - 1).id); |
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130 if (widget !is null && widget !is this && cast(Control) widget) { |
45 | 131 children [j++] = cast(Control) widget; |
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132 } |
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133 } |
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134 if (j is count) return children; |
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135 Control [] newChildren = new Control [j]; |
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136 System.arraycopy (children, 0, newChildren, 0, j); |
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137 return newChildren; |
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138 } |
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139 |
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140 Control [] _getTabList () { |
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141 if (tabList is null) return null; |
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142 int count = 0; |
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143 for (int i=0; i<tabList.length; i++) { |
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144 if (!tabList [i].isDisposed ()) count++; |
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145 } |
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146 if (count is tabList.length) return tabList; |
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147 Control [] newList = new Control [count]; |
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148 int index = 0; |
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149 for (int i=0; i<tabList.length; i++) { |
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150 if (!tabList [i].isDisposed ()) { |
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151 newList [index++] = tabList [i]; |
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152 } |
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153 } |
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154 tabList = newList; |
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155 return tabList; |
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156 } |
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157 |
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158 bool acceptsFirstResponder (objc.id id, objc.SEL sel) { |
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159 if ((state & CANVAS) !is 0) { |
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160 return ((style & DWT.NO_FOCUS) is 0); |
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161 } |
45 | 162 return super.acceptsFirstResponder (id, sel); |
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163 } |
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164 |
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165 objc.id accessibilityAttributeNames(objc.id id, objc.SEL sel) { |
45 | 166 |
167 if (id is view.id) { | |
168 if (accessible !is null) { | |
169 // If there is an accessible, it may provide its own list of attributes if it's a lightweight control. | |
170 // If not, let Cocoa handle it for this view. | |
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171 cocoa.id returnObject = accessible.internal_accessibilityAttributeNames(ACC.CHILDID_SELF); |
45 | 172 if (returnObject !is null) return returnObject.id; |
173 } | |
174 } | |
175 | |
176 return super.accessibilityAttributeNames(id, sel); | |
177 } | |
178 | |
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179 bool accessibilityIsIgnored(objc.id id, objc.SEL sel) { |
45 | 180 // If we have an accessible and it represents a valid accessible role, this view is not ignored. |
181 if (view !is null && id is view.id) { | |
182 if (accessible !is null) { | |
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183 cocoa.id role = accessible.internal_accessibilityAttributeValue(OS.NSAccessibilityRoleAttribute, ACC.CHILDID_SELF); |
45 | 184 if (role !is null) return false; |
185 } | |
186 } | |
187 | |
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188 return super.accessibilityIsIgnored(id, sel); |
45 | 189 } |
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190 |
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191 /** |
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192 * Clears any data that has been cached by a Layout for all widgets that |
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193 * are in the parent hierarchy of the changed control up to and including the |
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194 * receiver. If an ancestor does not have a layout, it is skipped. |
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195 * |
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196 * @param changed an array of controls that changed state and require a recalculation of size |
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197 * |
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198 * @exception IllegalArgumentException <ul> |
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199 * <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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200 * <li>ERROR_INVALID_PARENT - if any control in changed is not in the widget tree of the receiver</li> |
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201 * </ul> |
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202 * @exception DWTException <ul> |
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203 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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204 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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205 * </ul> |
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206 * |
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207 * @since 3.1 |
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208 */ |
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209 public void changed (Control[] changed) { |
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210 checkWidget (); |
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211 if (changed is null) error (DWT.ERROR_INVALID_ARGUMENT); |
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212 for (int i=0; i<changed.length; i++) { |
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213 Control control = changed [i]; |
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214 if (control is null) error (DWT.ERROR_INVALID_ARGUMENT); |
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215 if (control.isDisposed ()) error (DWT.ERROR_INVALID_ARGUMENT); |
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216 bool ancestor = false; |
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217 Composite composite = control.parent; |
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218 while (composite !is null) { |
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219 ancestor = composite is this; |
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220 if (ancestor) break; |
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221 composite = composite.parent; |
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222 } |
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223 if (!ancestor) error (DWT.ERROR_INVALID_PARENT); |
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224 } |
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225 for (int i=0; i<changed.length; i++) { |
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226 Control child = changed [i]; |
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227 Composite composite = child.parent; |
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228 while (child !is this) { |
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229 if (composite.layout_ is null || !composite.layout_.flushCache (child)) { |
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230 composite.state |= LAYOUT_CHANGED; |
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231 } |
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232 child = composite; |
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233 composite = child.parent; |
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234 } |
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235 } |
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236 } |
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237 |
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238 public Point computeSize (int wHint, int hHint, bool changed) { |
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239 checkWidget(); |
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240 Point size; |
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241 if (layout_ !is null) { |
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242 if ((wHint is DWT.DEFAULT) || (hHint is DWT.DEFAULT)) { |
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243 changed |= (state & LAYOUT_CHANGED) !is 0; |
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244 size = layout_.computeSize (this, wHint, hHint, changed); |
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245 state &= ~LAYOUT_CHANGED; |
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246 } else { |
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247 size = new Point (wHint, hHint); |
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248 } |
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249 } else { |
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250 size = minimumSize (wHint, hHint, changed); |
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251 } |
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252 if (size.x is 0) size.x = DEFAULT_WIDTH; |
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253 if (size.y is 0) size.y = DEFAULT_HEIGHT; |
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254 if (wHint !is DWT.DEFAULT) size.x = wHint; |
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255 if (hHint !is DWT.DEFAULT) size.y = hHint; |
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256 Rectangle trim = computeTrim (0, 0, size.x, size.y); |
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257 return new Point (trim.width, trim.height); |
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258 } |
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259 |
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260 protected void checkSubclass () { |
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261 /* Do nothing - Subclassing is allowed */ |
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262 } |
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263 |
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264 Control [] computeTabList () { |
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265 Control result [] = super.computeTabList (); |
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266 if (result.length is 0) return result; |
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267 Control [] list = tabList !is null ? _getTabList () : _getChildren (); |
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268 for (int i=0; i<list.length; i++) { |
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269 Control child = list [i]; |
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270 Control [] childList = child.computeTabList (); |
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271 if (childList.length !is 0) { |
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272 Control [] newResult = new Control [result.length + childList.length]; |
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273 System.arraycopy (result, 0, newResult, 0, result.length); |
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274 System.arraycopy (childList, 0, newResult, result.length, childList.length); |
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275 result = newResult; |
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276 } |
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277 } |
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278 return result; |
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279 } |
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280 |
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281 void createHandle () { |
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282 state |= CANVAS; |
22
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283 NSRect rect = NSRect(); |
0
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284 if ((style & (DWT.V_SCROLL | DWT.H_SCROLL)) !is 0 || hasBorder ()) { |
45 | 285 NSScrollView scrollWidget = cast(NSScrollView)(new SWTScrollView()).alloc(); |
0
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286 scrollWidget.initWithFrame (rect); |
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287 scrollWidget.setDrawsBackground(false); |
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288 if ((style & DWT.H_SCROLL) !is 0) scrollWidget.setHasHorizontalScroller(true); |
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289 if ((style & DWT.V_SCROLL) !is 0) scrollWidget.setHasVerticalScroller(true); |
60
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290 scrollWidget.setBorderType(hasBorder() ? OS.NSBezelBorder : OS.NSNoBorder); |
0
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291 scrollView = scrollWidget; |
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292 rect.width = rect.height = 100000; |
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293 } |
45 | 294 NSView widget = cast(NSView)(new SWTView()).alloc(); |
0
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295 widget.initWithFrame (rect); |
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296 // widget.setFocusRingType(OS.NSFocusRingTypeExterior); |
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297 view = widget; |
45 | 298 } |
299 | |
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300 void drawWidget (objc.id id, NSRect rect) { |
45 | 301 if ((state & CANVAS) !is 0) { |
302 if ((style & DWT.NO_BACKGROUND) is 0) { | |
303 NSGraphicsContext context = NSGraphicsContext.currentContext(); | |
304 fillBackground (view, context, rect); | |
305 } | |
0
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306 } |
45 | 307 super.drawWidget (id, rect); |
0
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308 } |
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309 |
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310 Composite findDeferredControl () { |
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311 return layoutCount > 0 ? this : parent.findDeferredControl (); |
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312 } |
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313 |
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314 Menu [] findMenus (Control control) { |
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315 if (control is this) return new Menu [0]; |
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316 Menu result [] = super.findMenus (control); |
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317 Control [] children = _getChildren (); |
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318 for (int i=0; i<children.length; i++) { |
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319 Control child = children [i]; |
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320 Menu [] menuList = child.findMenus (control); |
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321 if (menuList.length !is 0) { |
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322 Menu [] newResult = new Menu [result.length + menuList.length]; |
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323 System.arraycopy (result, 0, newResult, 0, result.length); |
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324 System.arraycopy (menuList, 0, newResult, result.length, menuList.length); |
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325 result = newResult; |
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326 } |
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327 } |
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328 return result; |
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329 } |
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330 |
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331 void fixChildren (Shell newShell, Shell oldShell, Decorations newDecorations, Decorations oldDecorations, Menu [] menus) { |
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332 super.fixChildren (newShell, oldShell, newDecorations, oldDecorations, menus); |
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333 Control [] children = _getChildren (); |
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334 for (int i=0; i<children.length; i++) { |
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335 children [i].fixChildren (newShell, oldShell, newDecorations, oldDecorations, menus); |
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336 } |
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337 } |
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338 |
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339 void fixTabList (Control control) { |
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340 if (tabList is null) return; |
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341 int count = 0; |
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342 for (int i=0; i<tabList.length; i++) { |
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343 if (tabList [i] is control) count++; |
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344 } |
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345 if (count is 0) return; |
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346 Control [] newList = null; |
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347 int length = tabList.length - count; |
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348 if (length !is 0) { |
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349 newList = new Control [length]; |
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350 int index = 0; |
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351 for (int i=0; i<tabList.length; i++) { |
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352 if (tabList [i] !is control) { |
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353 newList [index++] = tabList [i]; |
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354 } |
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355 } |
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356 } |
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357 tabList = newList; |
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358 } |
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359 |
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360 /** |
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361 * Returns the receiver's background drawing mode. This |
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362 * will be one of the following constants defined in class |
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363 * <code>DWT</code>: |
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364 * <code>INHERIT_NONE</code>, <code>INHERIT_DEFAULT</code>, |
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365 * <code>INHERTIT_FORCE</code>. |
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366 * |
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367 * @return the background mode |
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368 * |
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369 * @exception DWTException <ul> |
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370 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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371 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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372 * </ul> |
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373 * |
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374 * @see DWT |
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375 * |
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376 * @since 3.2 |
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377 */ |
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378 public int getBackgroundMode () { |
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379 checkWidget (); |
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380 return backgroundMode; |
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381 } |
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382 |
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383 /** |
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384 * Returns a (possibly empty) array containing the receiver's children. |
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385 * Children are returned in the order that they are drawn. The topmost |
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386 * control appears at the beginning of the array. Subsequent controls |
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387 * draw beneath this control and appear later in the array. |
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388 * <p> |
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389 * Note: This is not the actual structure used by the receiver |
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390 * to maintain its list of children, so modifying the array will |
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391 * not affect the receiver. |
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392 * </p> |
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393 * |
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394 * @return an array of children |
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395 * |
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396 * @see Control#moveAbove |
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397 * @see Control#moveBelow |
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398 * |
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399 * @exception DWTException <ul> |
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400 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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401 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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402 * </ul> |
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403 */ |
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404 public Control [] getChildren () { |
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405 checkWidget(); |
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406 return _getChildren (); |
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407 } |
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408 |
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409 int getChildrenCount () { |
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410 /* |
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411 * NOTE: The current implementation will count |
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412 * non-registered children. |
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413 */ |
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414 // short [] count = new short [1]; |
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415 // OS.CountSubControls (handle, count); |
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416 // return count [0]; |
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417 return 0; |
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418 } |
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419 |
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420 /** |
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421 * Returns layout which is associated with the receiver, or |
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422 * null if one has not been set. |
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423 * |
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424 * @return the receiver's layout or null |
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425 * |
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426 * @exception DWTException <ul> |
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427 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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428 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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429 * </ul> |
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430 */ |
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431 public Layout getLayout () { |
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432 checkWidget(); |
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433 return layout_; |
0
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434 } |
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435 |
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436 /** |
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437 * Returns <code>true</code> if the receiver has deferred |
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438 * the performing of layout, and <code>false</code> otherwise. |
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439 * |
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440 * @return the receiver's deferred layout state |
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441 * |
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442 * @exception DWTException <ul> |
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443 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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444 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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445 * </ul> |
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446 * |
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447 * @see #setLayoutDeferred(bool) |
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448 * @see #isLayoutDeferred() |
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449 * |
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450 * @since 3.1 |
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451 */ |
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452 public bool getLayoutDeferred () { |
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453 checkWidget (); |
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454 return layoutCount > 0 ; |
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455 } |
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456 |
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457 /** |
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458 * Gets the (possibly empty) tabbing order for the control. |
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459 * |
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460 * @return tabList the ordered list of controls representing the tab order |
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461 * |
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462 * @exception DWTException <ul> |
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463 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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464 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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465 * </ul> |
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466 * |
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467 * @see #setTabList |
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468 */ |
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469 public Control [] getTabList () { |
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470 checkWidget (); |
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471 Control [] tabList = _getTabList (); |
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472 if (tabList is null) { |
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473 int count = 0; |
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474 Control [] list =_getChildren (); |
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475 for (int i=0; i<list.length; i++) { |
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476 if (list [i].isTabGroup ()) count++; |
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477 } |
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478 tabList = new Control [count]; |
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479 int index = 0; |
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480 for (int i=0; i<list.length; i++) { |
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481 if (list [i].isTabGroup ()) { |
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482 tabList [index++] = list [i]; |
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483 } |
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484 } |
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485 } |
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486 return tabList; |
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487 } |
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488 |
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489 bool hooksKeys () { |
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490 return hooks (DWT.KeyDown) || hooks (DWT.KeyUp); |
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491 } |
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492 |
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493 /** |
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494 * Returns <code>true</code> if the receiver or any ancestor |
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495 * up to and including the receiver's nearest ancestor shell |
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496 * has deferred the performing of layouts. Otherwise, <code>false</code> |
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497 * is returned. |
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498 * |
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499 * @return the receiver's deferred layout state |
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500 * |
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501 * @exception DWTException <ul> |
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502 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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503 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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504 * </ul> |
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505 * |
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506 * @see #setLayoutDeferred(bool) |
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507 * @see #getLayoutDeferred() |
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508 * |
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509 * @since 3.1 |
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510 */ |
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511 public bool isLayoutDeferred () { |
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512 checkWidget (); |
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513 return findDeferredControl () !is null; |
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514 } |
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515 |
47
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516 bool isOpaque (objc.id id, objc.SEL sel) { |
45 | 517 if ((state & CANVAS) !is 0) { |
518 if (id is view.id) { | |
519 if (region is null && background !is null && background.handle[3] is 1) { | |
520 return true; | |
521 } | |
522 } | |
523 } | |
524 return super.isOpaque (id, sel); | |
525 } | |
526 | |
0
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527 bool isTabGroup () { |
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528 if ((state & CANVAS) !is 0) return true; |
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529 return super.isTabGroup (); |
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530 } |
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531 |
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532 void keyDown (objc.id id, objc.SEL sel, objc.id theEvent) { |
45 | 533 if ((state & CANVAS) !is 0) { |
534 NSArray array = NSArray.arrayWithObject (new NSEvent (theEvent)); | |
535 view.interpretKeyEvents (array); | |
536 return; | |
537 } | |
538 super.keyDown (id, sel, theEvent); | |
539 } | |
540 | |
0
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541 /** |
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542 * If the receiver has a layout, asks the layout to <em>lay out</em> |
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543 * (that is, set the size and location of) the receiver's children. |
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544 * If the receiver does not have a layout, do nothing. |
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545 * <p> |
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546 * This is equivalent to calling <code>layout(true)</code>. |
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547 * </p> |
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548 * <p> |
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549 * Note: Layout is different from painting. If a child is |
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550 * moved or resized such that an area in the parent is |
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551 * exposed, then the parent will paint. If no child is |
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552 * affected, the parent will not paint. |
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553 * </p> |
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554 * |
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555 * @exception DWTException <ul> |
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556 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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557 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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558 * </ul> |
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559 */ |
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560 public void layout () { |
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561 checkWidget (); |
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562 layout (true); |
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563 } |
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564 |
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565 /** |
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566 * If the receiver has a layout, asks the layout to <em>lay out</em> |
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567 * (that is, set the size and location of) the receiver's children. |
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568 * If the argument is <code>true</code> the layout must not rely |
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569 * on any information it has cached about the immediate children. If it |
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570 * is <code>false</code> the layout may (potentially) optimize the |
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571 * work it is doing by assuming that none of the receiver's |
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572 * children has changed state since the last layout. |
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573 * If the receiver does not have a layout, do nothing. |
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574 * <p> |
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575 * If a child is resized as a result of a call to layout, the |
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576 * resize event will invoke the layout of the child. The layout |
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577 * will cascade down through all child widgets in the receiver's widget |
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578 * tree until a child is encountered that does not resize. Note that |
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579 * a layout due to a resize will not flush any cached information |
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580 * (same as <code>layout(false)</code>). |
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581 * </p> |
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582 * <p> |
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583 * Note: Layout is different from painting. If a child is |
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584 * moved or resized such that an area in the parent is |
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585 * exposed, then the parent will paint. If no child is |
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586 * affected, the parent will not paint. |
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587 * </p> |
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588 * |
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589 * @param changed <code>true</code> if the layout must flush its caches, and <code>false</code> otherwise |
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590 * |
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591 * @exception DWTException <ul> |
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592 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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593 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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594 * </ul> |
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595 */ |
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596 public void layout (bool changed) { |
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597 checkWidget (); |
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598 if (layout_ is null) return; |
0
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599 layout (changed, false); |
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600 } |
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601 |
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602 /** |
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603 * If the receiver has a layout, asks the layout to <em>lay out</em> |
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604 * (that is, set the size and location of) the receiver's children. |
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605 * If the changed argument is <code>true</code> the layout must not rely |
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606 * on any information it has cached about its children. If it |
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607 * is <code>false</code> the layout may (potentially) optimize the |
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608 * work it is doing by assuming that none of the receiver's |
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609 * children has changed state since the last layout. |
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610 * If the all argument is <code>true</code> the layout will cascade down |
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611 * through all child widgets in the receiver's widget tree, regardless of |
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612 * whether the child has changed size. The changed argument is applied to |
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613 * all layouts. If the all argument is <code>false</code>, the layout will |
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614 * <em>not</em> cascade down through all child widgets in the receiver's widget |
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615 * tree. However, if a child is resized as a result of a call to layout, the |
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616 * resize event will invoke the layout of the child. Note that |
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617 * a layout due to a resize will not flush any cached information |
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618 * (same as <code>layout(false)</code>). |
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619 * </p> |
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620 * <p> |
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621 * Note: Layout is different from painting. If a child is |
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622 * moved or resized such that an area in the parent is |
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623 * exposed, then the parent will paint. If no child is |
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624 * affected, the parent will not paint. |
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625 * </p> |
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626 * |
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627 * @param changed <code>true</code> if the layout must flush its caches, and <code>false</code> otherwise |
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628 * @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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629 * |
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630 * @exception DWTException <ul> |
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631 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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632 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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633 * </ul> |
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634 * |
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635 * @since 3.1 |
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636 */ |
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637 public void layout (bool changed, bool all) { |
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638 checkWidget (); |
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639 if (layout_ is null && !all) return; |
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640 markLayout (changed, all); |
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641 updateLayout (all); |
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642 } |
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643 |
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644 /** |
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645 * Forces a lay out (that is, sets the size and location) of all widgets that |
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646 * are in the parent hierarchy of the changed control up to and including the |
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647 * receiver. The layouts in the hierarchy must not rely on any information |
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648 * cached about the changed control or any of its ancestors. The layout may |
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649 * (potentially) optimize the work it is doing by assuming that none of the |
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650 * peers of the changed control have changed state since the last layout. |
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651 * If an ancestor does not have a layout, skip it. |
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652 * <p> |
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653 * Note: Layout is different from painting. If a child is |
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654 * moved or resized such that an area in the parent is |
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655 * exposed, then the parent will paint. If no child is |
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656 * affected, the parent will not paint. |
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657 * </p> |
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658 * |
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659 * @param changed a control that has had a state change which requires a recalculation of its size |
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660 * |
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661 * @exception IllegalArgumentException <ul> |
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662 * <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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663 * <li>ERROR_INVALID_PARENT - if any control in changed is not in the widget tree of the receiver</li> |
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664 * </ul> |
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665 * @exception DWTException <ul> |
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666 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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667 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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668 * </ul> |
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669 * |
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670 * @since 3.1 |
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671 */ |
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672 public void layout (Control [] changed) { |
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673 checkWidget (); |
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674 if (changed is null) error (DWT.ERROR_INVALID_ARGUMENT); |
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675 for (int i=0; i<changed.length; i++) { |
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676 Control control = changed [i]; |
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677 if (control is null) error (DWT.ERROR_INVALID_ARGUMENT); |
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678 if (control.isDisposed ()) error (DWT.ERROR_INVALID_ARGUMENT); |
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679 bool ancestor = false; |
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680 Composite composite = control.parent; |
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681 while (composite !is null) { |
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682 ancestor = composite is this; |
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683 if (ancestor) break; |
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684 composite = composite.parent; |
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685 } |
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686 if (!ancestor) error (DWT.ERROR_INVALID_PARENT); |
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687 } |
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688 int updateCount = 0; |
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689 Composite [] update = new Composite [16]; |
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690 for (int i=0; i<changed.length; i++) { |
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691 Control child = changed [i]; |
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692 Composite composite = child.parent; |
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693 while (child !is this) { |
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694 if (composite.layout_ !is null) { |
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695 composite.state |= LAYOUT_NEEDED; |
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696 if (!composite.layout_.flushCache (child)) { |
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697 composite.state |= LAYOUT_CHANGED; |
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698 } |
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699 } |
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700 if (updateCount is update.length) { |
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701 Composite [] newUpdate = new Composite [update.length + 16]; |
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702 System.arraycopy (update, 0, newUpdate, 0, update.length); |
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703 update = newUpdate; |
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704 } |
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705 child = update [updateCount++] = composite; |
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706 composite = child.parent; |
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707 } |
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708 } |
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709 for (int i=updateCount-1; i>=0; i--) { |
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710 update [i].updateLayout (false); |
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711 } |
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712 } |
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713 |
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714 void markLayout (bool changed, bool all) { |
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715 if (layout_ !is null) { |
0
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716 state |= LAYOUT_NEEDED; |
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717 if (changed) state |= LAYOUT_CHANGED; |
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718 } |
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719 if (all) { |
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720 Control [] children = _getChildren (); |
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721 for (int i=0; i<children.length; i++) { |
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722 children [i].markLayout (changed, all); |
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723 } |
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724 } |
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725 } |
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726 |
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727 Point minimumSize (int wHint, int Hint, bool changed) { |
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728 Control [] children = _getChildren (); |
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729 int width = 0, height = 0; |
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730 for (int i=0; i<children.length; i++) { |
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731 Rectangle rect = children [i].getBounds (); |
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732 width = Math.max (width, rect.x + rect.width); |
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733 height = Math.max (height, rect.y + rect.height); |
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734 } |
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735 return new Point (width, height); |
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736 } |
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737 |
47
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738 void pageDown(objc.id id, objc.SEL sel, objc.id sender) { |
45 | 739 if ((state & CANVAS) !is 0) return; |
740 super.pageDown(id, sel, sender); | |
741 } | |
742 | |
47
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743 void pageUp(objc.id id, objc.SEL sel, objc.id sender) { |
45 | 744 if ((state & CANVAS) !is 0) return; |
745 super.pageUp(id, sel, sender); | |
746 } | |
747 | |
47
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748 void reflectScrolledClipView (objc.id id, objc.SEL sel, objc.id aClipView) { |
45 | 749 if ((state & CANVAS) !is 0) return; |
750 super.reflectScrolledClipView (id, sel, aClipView); | |
751 } | |
752 | |
0
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753 void releaseChildren (bool destroy) { |
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754 Control [] children = _getChildren (); |
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755 for (int i=0; i<children.length; i++) { |
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756 Control child = children [i]; |
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757 if (child !is null && !child.isDisposed ()) { |
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758 child.release (false); |
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759 } |
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760 } |
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761 super.releaseChildren (destroy); |
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762 } |
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763 |
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764 void releaseWidget () { |
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765 super.releaseWidget (); |
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766 layout_ = null; |
0
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767 tabList = null; |
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768 } |
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769 |
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770 void removeControl (Control control) { |
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771 fixTabList (control); |
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772 } |
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773 |
45 | 774 void resized () { |
775 super.resized (); | |
60
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776 if (layout_ !is null) { |
45 | 777 markLayout (false, false); |
778 updateLayout (false); | |
779 } | |
780 } | |
781 | |
47
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782 void scrollWheel (objc.id id, objc.SEL sel, objc.id theEvent) { |
45 | 783 if ((state & CANVAS) !is 0) { |
784 NSView view = scrollView !is null ? scrollView : this.view; | |
785 if (id is view.id) { | |
786 NSEvent nsEvent = new NSEvent(theEvent); | |
60
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787 Carbon.CGFloat delta = nsEvent.deltaY(); |
45 | 788 if (delta !is 0) { |
789 if (hooks (DWT.MouseWheel) || filters (DWT.MouseWheel)) { | |
790 if (!sendMouseEvent(nsEvent, DWT.MouseWheel, true)) { | |
791 return; | |
792 } | |
793 } | |
794 } | |
795 bool handled = false; | |
796 ScrollBar bar = verticalBar; | |
797 if (delta !is 0 && bar !is null && bar.getEnabled ()) { | |
47
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798 int selection = Math.max (0, cast(int)(0.5f + bar.getSelection () - bar.getIncrement () * delta)); |
45 | 799 bar.setSelection (selection); |
800 Event event = new Event (); | |
801 event.detail = delta > 0 ? DWT.PAGE_UP : DWT.PAGE_DOWN; | |
802 bar.sendEvent (DWT.Selection, event); | |
803 handled = true; | |
804 } | |
805 bar = horizontalBar; | |
806 delta = nsEvent.deltaX (); | |
807 if (delta !is 0 && bar !is null && bar.getEnabled ()) { | |
47
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808 int selection = Math.max (0, cast(int)(0.5f + bar.getSelection () - bar.getIncrement () * delta)); |
45 | 809 bar.setSelection (selection); |
810 Event event = new Event (); | |
811 event.detail = delta > 0 ? DWT.PAGE_UP : DWT.PAGE_DOWN; | |
812 bar.sendEvent (DWT.Selection, event); | |
813 handled = true; | |
814 } | |
815 if (!handled) view.superview().scrollWheel(nsEvent); | |
816 return; | |
817 } | |
818 callSuper(id, sel, theEvent); | |
819 return; | |
820 } | |
821 super.scrollWheel (id, sel, theEvent); | |
822 } | |
823 | |
0
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824 /** |
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825 * Sets the background drawing mode to the argument which should |
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826 * be one of the following constants defined in class <code>DWT</code>: |
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827 * <code>INHERIT_NONE</code>, <code>INHERIT_DEFAULT</code>, |
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828 * <code>INHERIT_FORCE</code>. |
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829 * |
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830 * @param mode the new background mode |
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831 * |
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832 * @exception DWTException <ul> |
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833 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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834 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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835 * </ul> |
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836 * |
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837 * @see DWT |
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838 * |
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839 * @since 3.2 |
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840 */ |
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841 public void setBackgroundMode (int mode) { |
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842 checkWidget (); |
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843 backgroundMode = mode; |
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844 Control [] children = _getChildren (); |
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845 for (int i = 0; i < children.length; i++) { |
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846 children [i].updateBackgroundMode (); |
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847 } |
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848 } |
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849 |
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850 public bool setFocus () { |
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851 checkWidget (); |
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852 Control [] children = _getChildren (); |
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853 for (int i= 0; i < children.length; i++) { |
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854 if (children [i].setFocus ()) return true; |
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855 } |
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856 return super.setFocus (); |
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857 } |
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858 |
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859 /** |
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860 * Sets the layout which is associated with the receiver to be |
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861 * the argument which may be null. |
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862 * |
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863 * @param layout the receiver's new layout or null |
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864 * |
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865 * @exception DWTException <ul> |
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866 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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867 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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868 * </ul> |
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869 */ |
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870 public void setLayout (Layout layout) { |
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871 checkWidget(); |
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872 this.layout_ = layout; |
0
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873 } |
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874 |
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875 /** |
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876 * If the argument is <code>true</code>, causes subsequent layout |
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877 * operations in the receiver or any of its children to be ignored. |
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878 * No layout of any kind can occur in the receiver or any of its |
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879 * children until the flag is set to false. |
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880 * Layout operations that occurred while the flag was |
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881 * <code>true</code> are remembered and when the flag is set to |
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882 * <code>false</code>, the layout operations are performed in an |
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883 * optimized manner. Nested calls to this method are stacked. |
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884 * |
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885 * @param defer the new defer state |
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886 * |
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887 * @exception DWTException <ul> |
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888 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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889 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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890 * </ul> |
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891 * |
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892 * @see #layout(bool) |
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893 * @see #layout(Control[]) |
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894 * |
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895 * @since 3.1 |
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896 */ |
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897 public void setLayoutDeferred (bool defer) { |
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898 if (!defer) { |
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899 if (--layoutCount is 0) { |
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900 if ((state & LAYOUT_CHILD) !is 0 || (state & LAYOUT_NEEDED) !is 0) { |
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901 updateLayout (true); |
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902 } |
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903 } |
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904 } else { |
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905 layoutCount++; |
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906 } |
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907 } |
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908 |
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909 |
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910 bool setScrollBarVisible (ScrollBar bar, bool visible) { |
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911 bool changed = super.setScrollBarVisible (bar, visible); |
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912 if (changed && layout_ !is null) { |
0
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913 markLayout (false, false); |
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914 updateLayout (false); |
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915 } |
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916 return changed; |
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917 } |
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918 |
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919 bool setTabGroupFocus () { |
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920 if (isTabItem ()) return setTabItemFocus (); |
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921 bool takeFocus = (style & DWT.NO_FOCUS) is 0; |
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922 if ((state & CANVAS) !is 0) takeFocus = hooksKeys (); |
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923 if (takeFocus && setTabItemFocus ()) return true; |
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924 Control [] children = _getChildren (); |
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925 for (int i=0; i<children.length; i++) { |
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926 Control child = children [i]; |
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927 if (child.isTabItem () && child.setTabItemFocus ()) return true; |
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928 } |
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929 return false; |
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930 } |
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931 |
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932 /** |
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933 * Sets the tabbing order for the specified controls to |
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934 * match the order that they occur in the argument list. |
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935 * |
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936 * @param tabList the ordered list of controls representing the tab order or null |
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937 * |
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938 * @exception IllegalArgumentException <ul> |
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939 * <li>ERROR_INVALID_ARGUMENT - if a widget in the tabList is null or has been disposed</li> |
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940 * <li>ERROR_INVALID_PARENT - if widget in the tabList is not in the same widget tree</li> |
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941 * </ul> |
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942 * @exception DWTException <ul> |
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943 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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944 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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945 * </ul> |
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946 */ |
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947 public void setTabList (Control [] tabList) { |
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948 checkWidget (); |
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949 if (tabList !is null) { |
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950 for (int i=0; i<tabList.length; i++) { |
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951 Control control = tabList [i]; |
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952 if (control is null) error (DWT.ERROR_INVALID_ARGUMENT); |
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953 if (control.isDisposed ()) error (DWT.ERROR_INVALID_ARGUMENT); |
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954 if (control.parent !is this) error (DWT.ERROR_INVALID_PARENT); |
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955 } |
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956 Control [] newList = new Control [tabList.length]; |
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957 System.arraycopy (tabList, 0, newList, 0, tabList.length); |
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958 tabList = newList; |
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959 } |
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960 this.tabList = tabList; |
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961 } |
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962 |
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963 int traversalCode (int key, NSEvent theEvent) { |
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964 if ((state & CANVAS) !is 0) { |
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965 if ((style & DWT.NO_FOCUS) !is 0) return 0; |
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966 if (hooksKeys ()) return 0; |
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967 } |
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968 return super.traversalCode (key, theEvent); |
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969 } |
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970 |
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971 void updateBackgroundMode () { |
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972 super.updateBackgroundMode (); |
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973 Control [] children = _getChildren (); |
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974 for (int i = 0; i < children.length; i++) { |
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975 children [i].updateBackgroundMode (); |
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976 } |
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|
977 } |
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978 |
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979 void updateLayout (bool all) { |
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980 Composite parent = findDeferredControl (); |
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981 if (parent !is null) { |
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982 parent.state |= LAYOUT_CHILD; |
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983 return; |
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984 } |
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985 if ((state & LAYOUT_NEEDED) !is 0) { |
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|
986 bool changed = (state & LAYOUT_CHANGED) !is 0; |
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987 state &= ~(LAYOUT_NEEDED | LAYOUT_CHANGED); |
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diff
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|
988 layout_.layout (this, changed); |
0
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989 } |
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990 if (all) { |
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991 state &= ~LAYOUT_CHILD; |
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992 Control [] children = _getChildren (); |
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993 for (int i=0; i<children.length; i++) { |
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994 children [i].updateLayout (all); |
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|
995 } |
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|
996 } |
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|
997 } |
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|
998 |
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999 } |