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Added dwt-addons in original directory structure of eclipse.org
author Frank Benoit <benoit@tionex.de>
date Sat, 14 Mar 2009 18:23:29 +0100
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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 * 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.wizard.Wizard;
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15 import org.eclipse.jface.wizard.IWizard;
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16 import org.eclipse.jface.wizard.IWizardPage;
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17 import org.eclipse.jface.wizard.IWizardContainer;
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18
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19
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20 import org.eclipse.swt.graphics.Image;
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21 import org.eclipse.swt.graphics.RGB;
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22 import org.eclipse.swt.widgets.Composite;
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23 import org.eclipse.swt.widgets.Shell;
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24 import org.eclipse.core.runtime.Assert;
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25 import org.eclipse.jface.dialogs.IDialogSettings;
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26 import org.eclipse.jface.resource.ImageDescriptor;
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27 import org.eclipse.jface.resource.JFaceResources;
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28
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29 import java.lang.all;
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30 import java.util.List;
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31 import java.util.ArrayList;
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32 import java.util.Set;
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33
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34 /**
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35 * An abstract base implementation of a wizard. A typical client subclasses
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36 * <code>Wizard</code> to implement a particular wizard.
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37 * <p>
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38 * Subclasses may call the following methods to configure the wizard:
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39 * <ul>
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40 * <li><code>addPage</code></li>
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41 * <li><code>setHelpAvailable</code></li>
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42 * <li><code>setDefaultPageImageDescriptor</code></li>
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43 * <li><code>setDialogSettings</code></li>
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44 * <li><code>setNeedsProgressMonitor</code></li>
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45 * <li><code>setTitleBarColor</code></li>
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46 * <li><code>setWindowTitle</code></li>
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47 * </ul>
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48 * </p>
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49 * <p>
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50 * Subclasses may override these methods if required:
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51 * <ul>
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52 * <li>reimplement <code>createPageControls</code></li>
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53 * <li>reimplement <code>performCancel</code></li>
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54 * <li>extend <code>addPages</code></li>
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55 * <li>reimplement <code>performFinish</code></li>
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56 * <li>extend <code>dispose</code></li>
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57 * </ul>
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58 * </p>
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59 * <p>
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60 * Note that clients are free to implement <code>IWizard</code> from scratch
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61 * instead of subclassing <code>Wizard</code>. Correct implementations of
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62 * <code>IWizard</code> will work with any correct implementation of
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63 * <code>IWizardPage</code>.
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64 * </p>
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65 */
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66 public abstract class Wizard : IWizard {
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67 /**
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68 * Image registry key of the default image for wizard pages (value
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69 * <code>"org.eclipse.jface.wizard.Wizard.pageImage"</code>).
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70 */
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71 public static final String DEFAULT_IMAGE = "org.eclipse.jface.wizard.Wizard.pageImage";//$NON-NLS-1$
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72
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73 /**
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74 * The wizard container this wizard belongs to; <code>null</code> if none.
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75 */
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76 private IWizardContainer container = null;
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77
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78 /**
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79 * This wizard's list of pages (element type: <code>IWizardPage</code>).
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80 */
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81 private List pages;
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82
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83 /**
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84 * Indicates whether this wizard needs a progress monitor.
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85 */
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86 private bool needsProgressMonitor_ = false;
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87
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88 /**
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89 * Indicates whether this wizard needs previous and next buttons even if the
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90 * wizard has only one page.
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91 */
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92 private bool forcePreviousAndNextButtons = false;
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93
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94 /**
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95 * Indicates whether this wizard supports help.
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96 */
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97 private bool isHelpAvailable_ = false;
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98
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99 /**
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100 * The default page image for pages without one of their one;
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101 * <code>null</code> if none.
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102 */
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103 private Image defaultImage = null;
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104
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105 /**
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106 * The default page image descriptor, used for creating a default page image
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107 * if required; <code>null</code> if none.
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108 */
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109 private ImageDescriptor defaultImageDescriptor;
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110
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111 /**
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112 * The color of the wizard title bar; <code>null</code> if none.
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113 */
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114 private RGB titleBarColor = null;
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115
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116 /**
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117 * The window title string for this wizard; <code>null</code> if none.
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118 */
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119 private String windowTitle = null;
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120
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121 /**
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122 * The dialog settings for this wizard; <code>null</code> if none.
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123 */
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124 private IDialogSettings dialogSettings = null;
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125
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126 /**
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127 * Creates a new empty wizard.
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128 */
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129 protected this() {
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130 //super();
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131 pages = new ArrayList();
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132 defaultImageDescriptor = JFaceResources.getImageRegistry().getDescriptor(DEFAULT_IMAGE);
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133 }
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134
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135 /**
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136 * Adds a new page to this wizard. The page is inserted at the end of the
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137 * page list.
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138 *
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139 * @param page
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140 * the new page
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141 */
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142 public void addPage(IWizardPage page) {
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143 pages.add(cast(Object)page);
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144 page.setWizard(this);
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145 }
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146
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147 /**
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148 * The <code>Wizard</code> implementation of this <code>IWizard</code>
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149 * method does nothing. Subclasses should extend if extra pages need to be
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150 * added before the wizard opens. New pages should be added by calling
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151 * <code>addPage</code>.
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152 */
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153 public void addPages() {
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154 }
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155
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156 /*
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157 * (non-Javadoc) Method declared on IWizard.
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158 */
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159 public bool canFinish() {
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160 // Default implementation is to check if all pages are complete.
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161 for (int i = 0; i < pages.size(); i++) {
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162 if (!(cast(IWizardPage) pages.get(i)).isPageComplete()) {
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163 return false;
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164 }
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165 }
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166 return true;
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167 }
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168
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169 /**
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170 * The <code>Wizard</code> implementation of this <code>IWizard</code>
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171 * method creates all the pages controls using
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172 * <code>IDialogPage.createControl</code>. Subclasses should reimplement
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173 * this method if they want to delay creating one or more of the pages
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174 * lazily. The framework ensures that the contents of a page will be created
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175 * before attempting to show it.
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176 */
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177 public void createPageControls(Composite pageContainer) {
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178 // the default behavior is to create all the pages controls
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179 for (int i = 0; i < pages.size(); i++) {
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180 IWizardPage page = cast(IWizardPage) pages.get(i);
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181 page.createControl(pageContainer);
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182 // page is responsible for ensuring the created control is
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183 // accessable
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184 // via getControl.
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185 Assert.isNotNull(page.getControl());
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186 }
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187 }
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188
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189 /**
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190 * The <code>Wizard</code> implementation of this <code>IWizard</code>
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191 * method disposes all the pages controls using
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192 * <code>DialogPage.dispose</code>. Subclasses should extend this method
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193 * if the wizard instance maintains addition SWT resource that need to be
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194 * disposed.
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195 */
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196 public void dispose() {
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197 // notify pages
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198 for (int i = 0; i < pages.size(); i++) {
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199 (cast(IWizardPage) pages.get(i)).dispose();
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200 }
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201 // dispose of image
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202 if (defaultImage !is null) {
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203 JFaceResources.getResources().destroyImage(defaultImageDescriptor);
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204 defaultImage = null;
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205 }
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206 }
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207
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208 /*
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209 * (non-Javadoc) Method declared on IWizard.
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210 */
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211 public IWizardContainer getContainer() {
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212 return container;
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213 }
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214
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215 /*
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216 * (non-Javadoc) Method declared on IWizard.
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217 */
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218 public Image getDefaultPageImage() {
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219 if (defaultImage is null) {
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220 defaultImage = JFaceResources.getResources().createImageWithDefault(defaultImageDescriptor);
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221 }
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222 return defaultImage;
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223 }
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224
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225 /*
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226 * (non-Javadoc) Method declared on IWizard.
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227 */
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228 public IDialogSettings getDialogSettings() {
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229 return dialogSettings;
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230 }
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231
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232 /*
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233 * (non-Javadoc) Method declared on IWizard. The default behavior is to
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234 * return the page that was added to this wizard after the given page.
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235 */
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236 public IWizardPage getNextPage(IWizardPage page) {
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237 int index = pages.indexOf( cast(Object)page );
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238 if (index is pages.size() - 1 || index is -1) {
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239 // last page or page not found
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240 return null;
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241 }
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242 return cast(IWizardPage) pages.get(index + 1);
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243 }
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244
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245 /*
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246 * (non-Javadoc) Method declared on IWizard.
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247 */
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248 public IWizardPage getPage(String name) {
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249 for (int i = 0; i < pages.size(); i++) {
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250 IWizardPage page = cast(IWizardPage) pages.get(i);
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251 String pageName = page.getName();
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252 if (pageName.equals(name)) {
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253 return page;
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254 }
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255 }
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256 return null;
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257 }
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258
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259 /*
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260 * (non-Javadoc) Method declared on IWizard.
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261 */
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262 public int getPageCount() {
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263 return pages.size();
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264 }
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265
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266 /*
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267 * (non-Javadoc) Method declared on IWizard.
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268 */
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269 public IWizardPage[] getPages() {
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270 return arraycast!(IWizardPage)( pages.toArray());
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271 }
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272
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273 /*
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274 * (non-Javadoc) Method declared on IWizard. The default behavior is to
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275 * return the page that was added to this wizard before the given page.
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276 */
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277 public IWizardPage getPreviousPage(IWizardPage page) {
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278 int index = pages.indexOf(cast(Object)page);
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279 if (index is 0 || index is -1) {
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280 // first page or page not found
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281 return null;
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282 }
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283 return cast(IWizardPage) pages.get(index - 1);
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284 }
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285
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286 /**
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287 * Returns the wizard's shell if the wizard is visible. Otherwise
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288 * <code>null</code> is returned.
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289 *
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290 * @return Shell
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291 */
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292 public Shell getShell() {
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293 if (container is null) {
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294 return null;
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295 }
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296 return container.getShell();
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297 }
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298
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299 /*
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300 * (non-Javadoc) Method declared on IWizard. By default this is the first
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301 * page inserted into the wizard.
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302 */
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303 public IWizardPage getStartingPage() {
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304 if (pages.size() is 0) {
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305 return null;
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306 }
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307 return cast(IWizardPage) pages.get(0);
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308 }
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309
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310 /*
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311 * (non-Javadoc) Method declared on IWizard.
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312 */
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313 public RGB getTitleBarColor() {
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314 return titleBarColor;
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315 }
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316
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317 /*
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318 * (non-Javadoc) Method declared on IWizard.
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319 */
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320 public String getWindowTitle() {
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321 return windowTitle;
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322 }
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323
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324 /*
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325 * (non-Javadoc) Method declared on IWizard.
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326 */
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327 public bool isHelpAvailable() {
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328 return isHelpAvailable_;
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329 }
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330
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331 /*
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332 * (non-Javadoc) Method declared on IWizard.
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333 */
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334 public bool needsPreviousAndNextButtons() {
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335 return forcePreviousAndNextButtons || pages.size() > 1;
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336 }
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337
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338 /*
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339 * (non-Javadoc) Method declared on IWizard.
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340 */
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341 public bool needsProgressMonitor() {
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342 return needsProgressMonitor_;
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343 }
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344
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345 /**
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346 * The <code>Wizard</code> implementation of this <code>IWizard</code>
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347 * method does nothing and returns <code>true</code>. Subclasses should
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348 * reimplement this method if they need to perform any special cancel
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349 * processing for their wizard.
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350 */
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351 public bool performCancel() {
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352 return true;
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353 }
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354
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355 /**
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356 * Subclasses must implement this <code>IWizard</code> method to perform
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357 * any special finish processing for their wizard.
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358 */
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359 public abstract bool performFinish();
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360
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361 /*
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362 * (non-Javadoc) Method declared on IWizard.
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363 */
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364 public void setContainer(IWizardContainer wizardContainer) {
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365 container = wizardContainer;
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366 }
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367
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368 /**
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369 * Sets the default page image descriptor for this wizard.
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370 * <p>
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371 * This image descriptor will be used to generate an image for a page with
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372 * no image of its own; the image will be computed once and cached.
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373 * </p>
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374 *
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375 * @param imageDescriptor
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376 * the default page image descriptor
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377 */
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378 public void setDefaultPageImageDescriptor(ImageDescriptor imageDescriptor) {
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379 defaultImageDescriptor = imageDescriptor;
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380 }
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381
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382 /**
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383 * Sets the dialog settings for this wizard.
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384 * <p>
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385 * The dialog settings is used to record state between wizard invocations
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386 * (for example, radio button selection, last import directory, etc.)
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387 * </p>
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388 *
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389 * @param settings
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390 * the dialog settings, or <code>null</code> if none
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391 * @see #getDialogSettings
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392 *
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393 */
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394 public void setDialogSettings(IDialogSettings settings) {
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395 dialogSettings = settings;
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396 }
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397
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398 /**
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399 * Controls whether the wizard needs Previous and Next buttons even if it
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400 * currently contains only one page.
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401 * <p>
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402 * This flag should be set on wizards where the first wizard page adds
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403 * follow-on wizard pages based on user input.
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404 * </p>
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parents:
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405 *
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406 * @param b
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407 * <code>true</code> to always show Next and Previous buttons,
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diff changeset
408 * and <code>false</code> to suppress Next and Previous buttons
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409 * for single page wizards
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410 */
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411 public void setForcePreviousAndNextButtons(bool b) {
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412 forcePreviousAndNextButtons = b;
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413 }
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414
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415 /**
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416 * Sets whether help is available for this wizard.
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417 * <p>
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418 * The result of this method is typically used by the container to show or
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419 * hide the Help button.
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420 * </p>
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421 *
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422 * @param b
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423 * <code>true</code> if help is available, and
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424 * <code>false</code> if this wizard is helpless
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425 * @see #isHelpAvailable()
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426 */
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427 public void setHelpAvailable(bool b) {
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428 isHelpAvailable_ = b;
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429 }
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430
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Frank Benoit <benoit@tionex.de>
parents:
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431 /**
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432 * Sets whether this wizard needs a progress monitor.
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433 *
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Frank Benoit <benoit@tionex.de>
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434 * @param b
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435 * <code>true</code> if a progress monitor is required, and
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436 * <code>false</code> if none is needed
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Frank Benoit <benoit@tionex.de>
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437 * @see #needsProgressMonitor()
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438 */
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439 public void setNeedsProgressMonitor(bool b) {
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440 needsProgressMonitor_ = b;
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441 }
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Frank Benoit <benoit@tionex.de>
parents:
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442
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Frank Benoit <benoit@tionex.de>
parents:
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443 /**
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Frank Benoit <benoit@tionex.de>
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444 * Sets the title bar color for this wizard.
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445 *
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446 * @param color
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447 * the title bar color
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448 */
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449 public void setTitleBarColor(RGB color) {
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450 titleBarColor = color;
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451 }
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452
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453 /**
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454 * Sets the window title for the container that hosts this page to the given
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455 * string.
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456 *
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457 * @param newTitle
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458 * the window title for the container
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459 */
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460 public void setWindowTitle(String newTitle) {
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461 windowTitle = newTitle;
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462 if (container !is null) {
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463 container.updateWindowTitle();
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464 }
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465 }
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466 }