Mercurial > projects > dwt2
annotate org.eclipse.jface/src/org/eclipse/jface/layout/LayoutGenerator.d @ 17:6f068362a363
Remove direct import of tango.text.convert.Format
author | Frank Benoit <benoit@tionex.de> |
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date | Wed, 18 Mar 2009 09:09:23 +0100 |
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1 /******************************************************************************* |
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2 * Copyright (c) 2005, 2006 IBM Corporation and others. |
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3 * All rights reserved. This program and the accompanying materials |
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4 * are made available under the terms of the Eclipse Public License v1.0 |
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5 * which accompanies this distribution, and is available at |
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6 * http://www.eclipse.org/legal/epl-v10.html |
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7 * |
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8 * Contributors: |
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9 * IBM Corporation - initial API and implementation |
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10 * Port to the D programming language: |
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11 * Frank Benoit <benoit@tionex.de> |
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12 *******************************************************************************/ |
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13 module org.eclipse.jface.layout.LayoutGenerator; |
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14 |
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15 import org.eclipse.jface.layout.GridDataFactory; |
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16 import org.eclipse.jface.layout.LayoutConstants; |
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17 |
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18 import org.eclipse.swt.SWT; |
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19 import org.eclipse.swt.events.ModifyListener; |
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20 import org.eclipse.swt.graphics.Point; |
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21 import org.eclipse.swt.layout.GridData; |
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22 import org.eclipse.swt.layout.GridLayout; |
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23 import org.eclipse.swt.widgets.Button; |
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24 import org.eclipse.swt.widgets.Composite; |
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25 import org.eclipse.swt.widgets.Control; |
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26 import org.eclipse.swt.widgets.Layout; |
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27 import org.eclipse.swt.widgets.Scrollable; |
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28 import org.eclipse.jface.util.Geometry; |
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29 |
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30 import java.lang.all; |
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31 import java.util.List; |
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32 import java.util.Set; |
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33 |
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34 /* package */class LayoutGenerator { |
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35 |
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36 /** |
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37 * Default size for controls with varying contents |
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38 */ |
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39 private static const Point defaultSize; |
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40 |
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41 /** |
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42 * Default wrapping size for wrapped labels |
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43 */ |
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44 private static const int wrapSize = 350; |
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45 |
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46 private static const GridDataFactory nonWrappingLabelData; |
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47 |
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48 static this(){ |
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49 defaultSize = new Point(150, 150); |
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50 nonWrappingLabelData = GridDataFactory.fillDefaults().align_(SWT.BEGINNING, SWT.CENTER).grab(false, false); |
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51 } |
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52 |
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53 private static bool hasStyle(Control c, int style) { |
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54 return (c.getStyle() & style) !is 0; |
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55 } |
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56 |
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57 /** |
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58 * Generates a GridLayout for the given composite by examining its child |
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59 * controls and attaching layout data to any immediate children that do not |
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60 * already have layout data. |
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61 * |
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62 * @param toGenerate |
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63 * composite to generate a layout for |
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64 */ |
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65 public static void generateLayout(Composite toGenerate) { |
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66 Control[] children = toGenerate.getChildren(); |
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67 |
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68 for (int i = 0; i < children.length; i++) { |
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69 Control control = children[i]; |
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70 |
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71 // Skip any children that already have layout data |
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72 if (control.getLayoutData() !is null) { |
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73 continue; |
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74 } |
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75 |
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76 applyLayoutDataTo(control); |
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77 } |
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78 } |
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79 |
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80 private static void applyLayoutDataTo(Control control) { |
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81 defaultsFor(control).applyTo(control); |
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82 } |
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83 |
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84 /** |
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85 * Creates default factory for this control types: |
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86 * <ul> |
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87 * <li>{@link Button} with {@link SWT#CHECK}</li> |
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88 * <li>{@link Button}</li> |
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89 * <li>{@link Composite}</li> |
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90 * </ul> |
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91 * @param control the control the factory is search for |
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92 * @return a default factory for the control |
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93 */ |
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94 public static GridDataFactory defaultsFor(Control control) { |
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95 if ( auto button = cast(Button) control ) { |
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96 |
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97 if (hasStyle(button, SWT.CHECK)) { |
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98 return nonWrappingLabelData.copy(); |
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99 } else { |
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100 return GridDataFactory.fillDefaults().align_(SWT.FILL, SWT.CENTER).hint(Geometry.max(button.computeSize(SWT.DEFAULT, SWT.DEFAULT, true), LayoutConstants.getMinButtonSize())); |
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101 } |
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102 } |
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103 |
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104 if (auto scrollable = cast(Scrollable) control ) { |
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105 |
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106 if ( auto composite = cast(Composite) scrollable ) { |
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107 |
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108 Layout theLayout = composite.getLayout(); |
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109 if ( cast(GridLayout) theLayout ) { |
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110 bool growsHorizontally = false; |
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111 bool growsVertically = false; |
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112 |
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113 Control[] children = composite.getChildren(); |
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114 for (int i = 0; i < children.length; i++) { |
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115 Control child = children[i]; |
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116 |
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117 GridData data = cast(GridData) child.getLayoutData(); |
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118 |
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119 if (data !is null) { |
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120 if (data.grabExcessHorizontalSpace) { |
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121 growsHorizontally = true; |
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122 } |
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123 if (data.grabExcessVerticalSpace) { |
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124 growsVertically = true; |
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125 } |
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126 } |
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127 } |
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128 |
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129 return GridDataFactory.fillDefaults().grab(growsHorizontally, growsVertically); |
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130 } |
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131 } |
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132 } |
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133 |
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134 bool wrapping = hasStyle(control, SWT.WRAP); |
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135 |
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136 // Assume any control with the H_SCROLL or V_SCROLL flags are |
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137 // horizontally or vertically |
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138 // scrollable, respectively. |
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139 bool hScroll = hasStyle(control, SWT.H_SCROLL); |
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140 bool vScroll = hasStyle(control, SWT.V_SCROLL); |
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141 |
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142 bool containsText = hasMethodSetText(control);//, "setText", [ ArrayWrapperString.classinfo ] ); //$NON-NLS-1$ |
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143 |
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144 // If the control has a setText method, an addModifyListener method, and |
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145 // does not have |
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146 // the SWT.READ_ONLY flag, assume it contains user-editable text. |
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147 bool userEditable = !hasStyle(control, SWT.READ_ONLY) && containsText && hasMethodAddModifyListener(control);//, "addModifyListener", [ ModifyListener.classinfo ]); //$NON-NLS-1$ |
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148 |
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149 // For controls containing user-editable text... |
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150 if (userEditable) { |
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151 if (hasStyle(control, SWT.MULTI)) { |
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152 vScroll = true; |
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153 } |
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154 |
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155 if (!wrapping) { |
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156 hScroll = true; |
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157 } |
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158 } |
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159 |
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160 // Compute the horizontal hint |
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161 int hHint = SWT.DEFAULT; |
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162 bool grabHorizontal = hScroll; |
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163 |
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164 // For horizontally-scrollable controls, override their horizontal |
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165 // preferred size |
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166 // with a constant |
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167 if (hScroll) { |
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168 hHint = defaultSize.x; |
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169 } else { |
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170 // For wrapping controls, there are two cases. |
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171 // 1. For controls that contain text (like wrapping labels, |
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172 // read-only text boxes, |
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173 // etc.) override their preferred size with the preferred wrapping |
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174 // point and |
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175 // make them grab horizontal space. |
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176 // 2. For non-text controls (like wrapping toolbars), assume that |
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177 // their non-wrapped |
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178 // size is best. |
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179 |
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180 if (wrapping) { |
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181 if (containsText) { |
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182 hHint = wrapSize; |
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183 grabHorizontal = true; |
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184 } |
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185 } |
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186 } |
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187 |
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188 int vAlign = SWT.FILL; |
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189 |
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190 // Heuristic for labels: Controls that contain non-wrapping read-only |
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191 // text should be |
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192 // center-aligned rather than fill-aligned |
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193 if (!vScroll && !wrapping && !userEditable && containsText) { |
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194 vAlign = SWT.CENTER; |
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195 } |
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196 |
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197 return GridDataFactory.fillDefaults().grab(grabHorizontal, vScroll).align_(SWT.FILL, vAlign).hint(hHint, vScroll ? defaultSize.y : SWT.DEFAULT); |
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198 } |
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199 |
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200 struct ControlInfo { |
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201 char[] name; |
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202 bool hasSetText; |
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203 bool hasAddModifierListener; |
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204 } |
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205 static ControlInfo[] controlInfo = [ |
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206 { "org.eclipse.swt.custom.CBanner.CBanner", false, false }, |
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207 { "org.eclipse.swt.custom.CCombo.CCombo", true, true }, |
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208 { "org.eclipse.swt.custom.CLabel.CLabel", true, false }, |
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209 { "org.eclipse.swt.custom.CTabFolder.CTabFolder", false, false }, |
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210 { "org.eclipse.swt.custom.SashForm.SashForm", false, false }, |
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211 { "org.eclipse.swt.custom.ScrolledComposite.ScrolledComposite", false, false }, |
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212 { "org.eclipse.swt.custom.StyledText.StyledText", true, true }, |
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213 { "org.eclipse.swt.custom.TableCursor.TableCursor", false, false }, |
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214 { "org.eclipse.swt.custom.TableTree.TableTree", false, false }, |
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215 { "org.eclipse.swt.custom.ViewForm.ViewForm", false, false }, |
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216 { "org.eclipse.swt.opengl.GLCanvas.GLCanvas", false, false }, |
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217 { "org.eclipse.swt.widgets.Button.Button", true, false }, |
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218 { "org.eclipse.swt.widgets.Canvas.Canvas", false, false }, |
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219 { "org.eclipse.swt.widgets.Combo.Combo", true, true }, |
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220 { "org.eclipse.swt.widgets.Composite.Composite", false, false }, |
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221 { "org.eclipse.swt.widgets.Control.Control", false, false }, |
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222 { "org.eclipse.swt.widgets.CoolBar.CoolBar", false, false }, |
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223 { "org.eclipse.swt.widgets.DateTime.DateTime", false, false }, |
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224 { "org.eclipse.swt.widgets.Decorations.Decorations", true, false }, |
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225 { "org.eclipse.swt.widgets.ExpandBar.ExpandBar", false, false }, |
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226 { "org.eclipse.swt.widgets.Group.Group", true, false }, |
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227 { "org.eclipse.swt.widgets.Label.Label", true, false }, |
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228 { "org.eclipse.swt.widgets.Link.Link", true, false }, |
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229 { "org.eclipse.swt.widgets.List.List", false, false }, |
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230 { "org.eclipse.swt.widgets.ProgressBar.ProgressBar", false, false }, |
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231 { "org.eclipse.swt.widgets.Sash.Sash", false, false }, |
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232 { "org.eclipse.swt.widgets.Scale.Scale", false, false }, |
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233 { "org.eclipse.swt.widgets.Scrollable.Scrollable", false, false }, |
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234 { "org.eclipse.swt.widgets.Shell.Shell", true, false }, |
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235 { "org.eclipse.swt.widgets.Slider.Slider", false, false }, |
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236 { "org.eclipse.swt.widgets.Spinner.Spinner", false, true }, |
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237 { "org.eclipse.swt.widgets.TabFolder.TabFolder", false, false }, |
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238 { "org.eclipse.swt.widgets.Table.Table", false, false }, |
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239 { "org.eclipse.swt.widgets.Text.Text", true, true }, |
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240 { "org.eclipse.swt.widgets.ToolBar.ToolBar", false, false }, |
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241 { "org.eclipse.swt.widgets.Tree.Tree", false, false }, |
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242 ]; |
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243 private static bool hasMethodSetText(Control control) { |
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244 char[] name = control.classinfo.name; |
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245 foreach( ci; controlInfo ){ |
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246 if( ci.name == name ){ |
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247 return ci.hasSetText; |
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248 } |
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249 } |
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250 throw new Exception( Format( "{}:{} Control was not found for reflection info: {}", __FILE__, __LINE__, name )); |
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251 } |
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252 private static bool hasMethodAddModifyListener(Control control) { |
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253 char[] name = control.classinfo.name; |
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254 foreach( ci; controlInfo ){ |
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255 if( ci.name == name ){ |
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256 return ci.hasAddModifierListener; |
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257 } |
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258 } |
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259 throw new Exception( Format( "{}:{} Control was not found for reflection info: {}", __FILE__, __LINE__, name )); |
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260 } |
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261 // private static bool hasMethod(Control control, String name, ClassInfo[] parameterTypes) { |
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262 // ClassInfo c = control.classinfo; |
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263 // implMissing(__FILE__,__LINE__); |
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264 // pragma(msg, "FIXME org.eclipse.jface.layout.LayoutGenerator hasMethod reflection" ); |
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265 // return true; |
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266 ///+ try { |
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267 // return c.getMethod(name, parameterTypes) !is null; |
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268 // } catch (SecurityException e) { |
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269 // return false; |
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270 // } catch (NoSuchMethodException e) { |
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271 // return false; |
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272 // }+/ |
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273 // } |
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274 } |