Mercurial > projects > dwt-mac
annotate dwt/custom/SashForm.d @ 5:1a8b3cb347e0
Fix Ctors to 'this'
author | Frank Benoit <benoit@tionex.de> |
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date | Wed, 27 Aug 2008 14:02:31 +0200 |
parents | 380af2bdd8e5 |
children | e831403a80a9 |
rev | line source |
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0
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1 /******************************************************************************* |
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2 * Copyright (c) 2000, 2007 IBM Corporation and others. |
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3 * All rights reserved. This program and the accompanying materials |
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4 * are made available under the terms of the Eclipse Public License v1.0 |
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5 * which accompanies this distribution, and is available at |
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6 * http://www.eclipse.org/legal/epl-v10.html |
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7 * |
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8 * Contributors: |
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9 * IBM Corporation - initial API and implementation |
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10 *******************************************************************************/ |
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11 module dwt.custom; |
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12 |
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13 |
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14 import dwt.*; |
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15 import dwt.widgets.*; |
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16 import dwt.graphics.*; |
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17 |
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18 /** |
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19 * The SashForm is a composite control that lays out its children in a |
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20 * row or column arrangement (as specified by the orientation) and places |
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21 * a Sash between each child. One child may be maximized to occupy the |
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22 * entire size of the SashForm. The relative sizes of the children may |
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23 * be specified using weights. |
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24 * <p> |
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25 * <dl> |
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26 * <dt><b>Styles:</b></dt> |
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27 * <dd>HORIZONTAL, VERTICAL, SMOOTH</dd> |
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28 * </dl> |
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29 * </p> |
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30 */ |
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31 public class SashForm : Composite { |
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32 |
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33 public int SASH_WIDTH = 3; |
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34 |
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35 int sashStyle; |
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36 Sash[] sashes = new Sash[0]; |
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37 // Remember background and foreground |
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38 // colors to determine whether to set |
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39 // sashes to the default color (null) or |
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40 // a specific color |
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41 Color background = null; |
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42 Color foreground = null; |
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43 Control[] controls = new Control[0]; |
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44 Control maxControl = null; |
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45 Listener sashListener; |
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46 static final int DRAG_MINIMUM = 20; |
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47 |
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48 /** |
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49 * Constructs a new instance of this class given its parent |
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50 * and a style value describing its behavior and appearance. |
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51 * <p> |
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52 * The style value is either one of the style constants defined in |
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53 * class <code>DWT</code> which is applicable to instances of this |
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54 * class, or must be built by <em>bitwise OR</em>'ing together |
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55 * (that is, using the <code>int</code> "|" operator) two or more |
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56 * of those <code>DWT</code> style constants. The class description |
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57 * lists the style constants that are applicable to the class. |
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58 * Style bits are also inherited from superclasses. |
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59 * </p> |
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60 * |
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61 * @param parent a widget which will be the parent of the new instance (cannot be null) |
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62 * @param style the style of widget to construct |
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63 * |
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64 * @exception IllegalArgumentException <ul> |
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65 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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66 * </ul> |
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67 * @exception DWTException <ul> |
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68 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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69 * </ul> |
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70 * |
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71 * @see DWT#HORIZONTAL |
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72 * @see DWT#VERTICAL |
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73 * @see #getStyle() |
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74 */ |
5 | 75 public this(Composite parent, int style) { |
0
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76 super(parent, checkStyle(style)); |
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77 super.setLayout(new SashFormLayout()); |
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78 sashStyle = ((style & DWT.VERTICAL) !is 0) ? DWT.HORIZONTAL : DWT.VERTICAL; |
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79 if ((style & DWT.BORDER) !is 0) sashStyle |= DWT.BORDER; |
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80 if ((style & DWT.SMOOTH) !is 0) sashStyle |= DWT.SMOOTH; |
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81 sashListener = new Listener() { |
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82 public void handleEvent(Event e) { |
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83 onDragSash(e); |
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84 } |
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85 }; |
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86 } |
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87 static int checkStyle (int style) { |
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88 int mask = DWT.BORDER | DWT.LEFT_TO_RIGHT | DWT.RIGHT_TO_LEFT; |
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89 return style & mask; |
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90 } |
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91 /** |
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92 * Returns DWT.HORIZONTAL if the controls in the SashForm are laid out side by side |
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93 * or DWT.VERTICAL if the controls in the SashForm are laid out top to bottom. |
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94 * |
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95 * @return DWT.HORIZONTAL or DWT.VERTICAL |
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96 */ |
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97 public int getOrientation() { |
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98 //checkWidget(); |
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99 return (sashStyle & DWT.VERTICAL) !is 0 ? DWT.HORIZONTAL : DWT.VERTICAL; |
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100 } |
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101 /** |
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102 * Returns the width of the sashes when the controls in the SashForm are |
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103 * laid out. |
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104 * |
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105 * @return the width of the sashes |
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106 * |
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107 * @exception DWTException <ul> |
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108 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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109 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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110 * </ul> |
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111 * |
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112 * @since 3.4 |
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113 */ |
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114 public int getSashWidth() { |
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115 checkWidget(); |
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116 return SASH_WIDTH; |
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117 } |
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118 public int getStyle() { |
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119 int style = super.getStyle(); |
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120 style |= getOrientation() is DWT.VERTICAL ? DWT.VERTICAL : DWT.HORIZONTAL; |
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121 if ((sashStyle & DWT.SMOOTH) !is 0) style |= DWT.SMOOTH; |
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122 return style; |
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123 } |
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124 /** |
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125 * Answer the control that currently is maximized in the SashForm. |
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126 * This value may be null. |
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127 * |
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128 * @return the control that currently is maximized or null |
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129 */ |
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130 public Control getMaximizedControl(){ |
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131 //checkWidget(); |
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132 return this.maxControl; |
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133 } |
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134 /** |
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135 * Answer the relative weight of each child in the SashForm. The weight represents the |
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136 * percent of the total width (if SashForm has Horizontal orientation) or |
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137 * total height (if SashForm has Vertical orientation) each control occupies. |
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138 * The weights are returned in order of the creation of the widgets (weight[0] |
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139 * corresponds to the weight of the first child created). |
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140 * |
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141 * @return the relative weight of each child |
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142 * |
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143 * @exception DWTException <ul> |
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144 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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145 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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146 * </ul> |
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147 */ |
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148 |
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149 public int[] getWeights() { |
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150 checkWidget(); |
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151 Control[] cArray = getControls(false); |
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152 int[] ratios = new int[cArray.length]; |
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153 for (int i = 0; i < cArray.length; i++) { |
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154 Object data = cArray[i].getLayoutData(); |
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155 if (data !is null && data instanceof SashFormData) { |
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156 ratios[i] = (int)(((SashFormData)data).weight * 1000 >> 16); |
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157 } else { |
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158 ratios[i] = 200; |
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159 } |
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160 } |
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161 return ratios; |
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162 } |
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163 Control[] getControls(bool onlyVisible) { |
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164 Control[] children = getChildren(); |
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165 Control[] result = new Control[0]; |
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166 for (int i = 0; i < children.length; i++) { |
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167 if (children[i] instanceof Sash) continue; |
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168 if (onlyVisible && !children[i].getVisible()) continue; |
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169 |
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170 Control[] newResult = new Control[result.length + 1]; |
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171 System.arraycopy(result, 0, newResult, 0, result.length); |
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172 newResult[result.length] = children[i]; |
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173 result = newResult; |
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174 } |
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175 return result; |
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176 } |
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177 void onDragSash(Event event) { |
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178 Sash sash = (Sash)event.widget; |
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179 int sashIndex = -1; |
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180 for (int i= 0; i < sashes.length; i++) { |
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181 if (sashes[i] is sash) { |
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182 sashIndex = i; |
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183 break; |
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184 } |
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185 } |
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186 if (sashIndex is -1) return; |
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187 |
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188 Control c1 = controls[sashIndex]; |
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189 Control c2 = controls[sashIndex + 1]; |
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190 Rectangle b1 = c1.getBounds(); |
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191 Rectangle b2 = c2.getBounds(); |
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192 |
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193 Rectangle sashBounds = sash.getBounds(); |
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194 Rectangle area = getClientArea(); |
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195 bool correction = false; |
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196 if (getOrientation() is DWT.HORIZONTAL) { |
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197 correction = b1.width < DRAG_MINIMUM || b2.width < DRAG_MINIMUM; |
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198 int totalWidth = b2.x + b2.width - b1.x; |
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199 int shift = event.x - sashBounds.x; |
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200 b1.width += shift; |
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201 b2.x += shift; |
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202 b2.width -= shift; |
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203 if (b1.width < DRAG_MINIMUM) { |
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204 b1.width = DRAG_MINIMUM; |
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205 b2.x = b1.x + b1.width + sashBounds.width; |
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206 b2.width = totalWidth - b2.x; |
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207 event.x = b1.x + b1.width; |
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208 event.doit = false; |
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209 } |
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210 if (b2.width < DRAG_MINIMUM) { |
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211 b1.width = totalWidth - DRAG_MINIMUM - sashBounds.width; |
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212 b2.x = b1.x + b1.width + sashBounds.width; |
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213 b2.width = DRAG_MINIMUM; |
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214 event.x = b1.x + b1.width; |
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215 event.doit = false; |
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216 } |
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217 Object data1 = c1.getLayoutData(); |
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218 if (data1 is null || !(data1 instanceof SashFormData)) { |
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219 data1 = new SashFormData(); |
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220 c1.setLayoutData(data1); |
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221 } |
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222 Object data2 = c2.getLayoutData(); |
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223 if (data2 is null || !(data2 instanceof SashFormData)) { |
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224 data2 = new SashFormData(); |
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225 c2.setLayoutData(data2); |
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226 } |
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227 ((SashFormData)data1).weight = (((long)b1.width << 16) + area.width - 1) / area.width; |
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228 ((SashFormData)data2).weight = (((long)b2.width << 16) + area.width - 1) / area.width; |
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229 } else { |
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230 correction = b1.height < DRAG_MINIMUM || b2.height < DRAG_MINIMUM; |
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231 int totalHeight = b2.y + b2.height - b1.y; |
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232 int shift = event.y - sashBounds.y; |
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233 b1.height += shift; |
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234 b2.y += shift; |
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235 b2.height -= shift; |
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236 if (b1.height < DRAG_MINIMUM) { |
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237 b1.height = DRAG_MINIMUM; |
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238 b2.y = b1.y + b1.height + sashBounds.height; |
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239 b2.height = totalHeight - b2.y; |
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240 event.y = b1.y + b1.height; |
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241 event.doit = false; |
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242 } |
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243 if (b2.height < DRAG_MINIMUM) { |
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244 b1.height = totalHeight - DRAG_MINIMUM - sashBounds.height; |
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245 b2.y = b1.y + b1.height + sashBounds.height; |
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246 b2.height = DRAG_MINIMUM; |
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247 event.y = b1.y + b1.height; |
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248 event.doit = false; |
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249 } |
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250 Object data1 = c1.getLayoutData(); |
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251 if (data1 is null || !(data1 instanceof SashFormData)) { |
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252 data1 = new SashFormData(); |
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253 c1.setLayoutData(data1); |
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254 } |
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255 Object data2 = c2.getLayoutData(); |
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256 if (data2 is null || !(data2 instanceof SashFormData)) { |
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257 data2 = new SashFormData(); |
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258 c2.setLayoutData(data2); |
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259 } |
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260 ((SashFormData)data1).weight = (((long)b1.height << 16) + area.height - 1) / area.height; |
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261 ((SashFormData)data2).weight = (((long)b2.height << 16) + area.height - 1) / area.height; |
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262 } |
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263 if (correction || (event.doit && event.detail !is DWT.DRAG)) { |
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264 c1.setBounds(b1); |
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265 sash.setBounds(event.x, event.y, event.width, event.height); |
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266 c2.setBounds(b2); |
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267 } |
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268 } |
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269 /** |
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270 * If orientation is DWT.HORIZONTAL, lay the controls in the SashForm |
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271 * out side by side. If orientation is DWT.VERTICAL, lay the |
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272 * controls in the SashForm out top to bottom. |
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273 * |
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274 * @param orientation DWT.HORIZONTAL or DWT.VERTICAL |
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275 * |
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276 * @exception DWTException <ul> |
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277 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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278 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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279 * <li>ERROR_INVALID_ARGUMENT - if the value of orientation is not DWT.HORIZONTAL or DWT.VERTICAL |
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280 * </ul> |
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281 */ |
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282 public void setOrientation(int orientation) { |
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283 checkWidget(); |
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284 if (getOrientation() is orientation) return; |
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285 if (orientation !is DWT.HORIZONTAL && orientation !is DWT.VERTICAL) { |
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286 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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287 } |
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288 sashStyle &= ~(DWT.HORIZONTAL | DWT.VERTICAL); |
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289 sashStyle |= orientation is DWT.VERTICAL ? DWT.HORIZONTAL : DWT.VERTICAL; |
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290 for (int i = 0; i < sashes.length; i++) { |
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291 sashes[i].dispose(); |
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292 sashes[i] = new Sash(this, sashStyle); |
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293 sashes[i].setBackground(background); |
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294 sashes[i].setForeground(foreground); |
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295 sashes[i].addListener(DWT.Selection, sashListener); |
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296 } |
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297 layout(false); |
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298 } |
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299 public void setBackground (Color color) { |
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300 super.setBackground(color); |
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301 background = color; |
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302 for (int i = 0; i < sashes.length; i++) { |
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303 sashes[i].setBackground(background); |
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304 } |
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305 } |
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306 public void setForeground (Color color) { |
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307 super.setForeground(color); |
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308 foreground = color; |
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309 for (int i = 0; i < sashes.length; i++) { |
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310 sashes[i].setForeground(foreground); |
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311 } |
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312 } |
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313 /** |
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314 * Sets the layout which is associated with the receiver to be |
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315 * the argument which may be null. |
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316 * <p> |
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317 * Note: No Layout can be set on this Control because it already |
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318 * manages the size and position of its children. |
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319 * </p> |
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320 * |
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321 * @param layout the receiver's new layout or null |
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322 * |
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323 * @exception DWTException <ul> |
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324 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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325 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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326 * </ul> |
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327 */ |
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328 public void setLayout (Layout layout) { |
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329 checkWidget(); |
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330 return; |
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331 } |
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332 /** |
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333 * Specify the control that should take up the entire client area of the SashForm. |
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334 * If one control has been maximized, and this method is called with a different control, |
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335 * the previous control will be minimized and the new control will be maximized. |
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336 * If the value of control is null, the SashForm will minimize all controls and return to |
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337 * the default layout where all controls are laid out separated by sashes. |
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338 * |
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339 * @param control the control to be maximized or null |
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340 * |
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341 * @exception DWTException <ul> |
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342 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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343 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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344 * </ul> |
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345 */ |
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346 public void setMaximizedControl(Control control){ |
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347 checkWidget(); |
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348 if (control is null) { |
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349 if (maxControl !is null) { |
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350 this.maxControl = null; |
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351 layout(false); |
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352 for (int i= 0; i < sashes.length; i++){ |
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353 sashes[i].setVisible(true); |
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354 } |
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355 } |
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356 return; |
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357 } |
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358 |
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359 for (int i= 0; i < sashes.length; i++){ |
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360 sashes[i].setVisible(false); |
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361 } |
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362 maxControl = control; |
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363 layout(false); |
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364 } |
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365 |
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366 /** |
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367 * Specify the width of the sashes when the controls in the SashForm are |
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368 * laid out. |
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369 * |
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370 * @param width the width of the sashes |
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371 * |
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372 * @exception DWTException <ul> |
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373 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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374 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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375 * </ul> |
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376 * |
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377 * @since 3.4 |
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378 */ |
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379 public void setSashWidth(int width) { |
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380 checkWidget(); |
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381 if (SASH_WIDTH is width) return; |
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382 SASH_WIDTH = width; |
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383 layout(false); |
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384 } |
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385 /** |
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386 * Specify the relative weight of each child in the SashForm. This will determine |
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387 * what percent of the total width (if SashForm has Horizontal orientation) or |
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388 * total height (if SashForm has Vertical orientation) each control will occupy. |
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389 * The weights must be positive values and there must be an entry for each |
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390 * non-sash child of the SashForm. |
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391 * |
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392 * @param weights the relative weight of each child |
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393 * |
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394 * @exception DWTException <ul> |
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395 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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396 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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397 * <li>ERROR_INVALID_ARGUMENT - if the weights value is null or of incorrect length (must match the number of children)</li> |
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398 * </ul> |
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399 */ |
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400 public void setWeights(int[] weights) { |
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401 checkWidget(); |
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402 Control[] cArray = getControls(false); |
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403 if (weights is null || weights.length !is cArray.length) { |
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404 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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405 } |
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406 |
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407 int total = 0; |
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408 for (int i = 0; i < weights.length; i++) { |
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409 if (weights[i] < 0) { |
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410 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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411 } |
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412 total += weights[i]; |
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413 } |
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414 if (total is 0) { |
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415 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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416 } |
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417 for (int i = 0; i < cArray.length; i++) { |
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418 Object data = cArray[i].getLayoutData(); |
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419 if (data is null || !(data instanceof SashFormData)) { |
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420 data = new SashFormData(); |
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421 cArray[i].setLayoutData(data); |
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422 } |
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423 ((SashFormData)data).weight = (((long)weights[i] << 16) + total - 1) / total; |
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424 } |
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425 |
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426 layout(false); |
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427 } |
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428 } |