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annotate dwtx/jface/dialogs/StatusDialog.d @ 192:c3583c6ec027

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Added missing default cases for switch statements
author Frank Benoit <benoit@tionex.de>
date Mon, 03 Nov 2008 22:52:26 +0100
parents ea8ff534f622
children
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 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 dwtx.jface.dialogs.StatusDialog;
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14
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15 import dwtx.jface.dialogs.Dialog;
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16 import dwtx.jface.dialogs.TrayDialog;
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17 import dwtx.jface.dialogs.IDialogConstants;
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18
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19 import dwt.DWT;
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20 import dwt.custom.CLabel;
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21 import dwt.graphics.Color;
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22 import dwt.graphics.Image;
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23 import dwt.layout.GridData;
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24 import dwt.layout.GridLayout;
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25 import dwt.widgets.Button;
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26 import dwt.widgets.Composite;
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27 import dwt.widgets.Control;
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28 import dwt.widgets.Shell;
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29 import dwtx.core.runtime.IStatus;
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30 import dwtx.core.runtime.Status;
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31 import dwtx.jface.resource.JFaceColors;
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32 import dwtx.jface.resource.JFaceResources;
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33 import dwtx.jface.util.Policy;
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34 import dwtx.jface.util.Util;
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35
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36 import dwt.dwthelper.utils;
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37
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38 /**
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39 * An abstract base class for dialogs with a status bar and OK/CANCEL buttons.
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40 * The status message is specified in an IStatus which can be of severity ERROR,
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41 * WARNING, INFO or OK. The OK button is enabled or disabled depending on the
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42 * status.
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43 *
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44 * @since 3.1
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45 */
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46 public abstract class StatusDialog : TrayDialog {
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47
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48 private Button fOkButton;
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49
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50 private MessageLine fStatusLine;
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51
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52 private IStatus fLastStatus;
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53
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54 private String fTitle;
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55
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56 private Image fImage;
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57
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58 private bool fStatusLineAboveButtons = true;
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59
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60 /**
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61 * A message line displaying a status.
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62 */
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63 private class MessageLine : CLabel {
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64
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65 private Color fNormalMsgAreaBackground;
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66
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67 /**
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68 * Creates a new message line as a child of the given parent.
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69 *
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70 * @param parent
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71 */
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72 public this(Composite parent) {
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73 this(parent, DWT.LEFT);
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74 }
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75
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76 /**
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77 * Creates a new message line as a child of the parent and with the
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78 * given DWT stylebits.
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79 *
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80 * @param parent
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81 * @param style
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82 */
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83 public this(Composite parent, int style) {
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84 super(parent, style);
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85 fNormalMsgAreaBackground = getBackground();
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86 }
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87
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88 /**
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89 * Find an image assocated with the status.
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90 *
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91 * @param status
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92 * @return Image
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93 */
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94 private Image findImage(IStatus status) {
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95 if (status.isOK()) {
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96 return null;
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97 } else if (status.matches(IStatus.ERROR)) {
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98 return JFaceResources.getImage(Dialog.DLG_IMG_MESSAGE_ERROR);
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99 } else if (status.matches(IStatus.WARNING)) {
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100 return JFaceResources.getImage(Dialog.DLG_IMG_MESSAGE_WARNING);
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101 } else if (status.matches(IStatus.INFO)) {
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102 return JFaceResources.getImage(Dialog.DLG_IMG_MESSAGE_INFO);
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103 }
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104 return null;
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105 }
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106
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107 /**
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108 * Sets the message and image to the given status.
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109 *
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110 * @param status
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111 * IStatus or <code>null</code>. <code>null</code> will
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112 * set the empty text and no image.
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113 */
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114 public void setErrorStatus(IStatus status) {
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115 if (status !is null && !status.isOK()) {
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116 String message = status.getMessage();
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117 if (message !is null && message.length > 0) {
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118 setText(message);
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119 // unqualified call of setImage is too ambiguous for
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120 // Foundation 1.0 compiler
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121 // see https://bugs.eclipse.org/bugs/show_bug.cgi?id=140576
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122 this.outer.setImage(findImage(status));
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123 setBackground(JFaceColors.getErrorBackground(getDisplay()));
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124 return;
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125 }
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126 }
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127 setText(""); //$NON-NLS-1$
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128 // unqualified call of setImage is too ambiguous for Foundation 1.0
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129 // compiler
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130 // see https://bugs.eclipse.org/bugs/show_bug.cgi?id=140576
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131 this.outer.setImage(null);
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132 setBackground(fNormalMsgAreaBackground);
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133 }
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134 }
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135
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136 /**
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137 * Creates an instance of a status dialog.
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138 *
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139 * @param parent
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140 * the parent Shell of the dialog
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141 */
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142 public this(Shell parent) {
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143 super(parent);
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144 fLastStatus = new Status(IStatus.OK, Policy.JFACE, IStatus.OK,
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145 Util.ZERO_LENGTH_STRING, null);
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146 }
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147
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148 /**
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149 * Specifies whether status line appears to the left of the buttons
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150 * (default) or above them.
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151 *
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152 * @param aboveButtons
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153 * if <code>true</code> status line is placed above buttons; if
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154 * <code>false</code> to the right
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155 */
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156 public void setStatusLineAboveButtons(bool aboveButtons) {
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157 fStatusLineAboveButtons = aboveButtons;
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158 }
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159
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160 /**
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161 * Update the dialog's status line to reflect the given status. It is safe
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162 * to call this method before the dialog has been opened.
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163 *
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164 * @param status
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165 * the status to set
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166 */
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167 protected void updateStatus(IStatus status) {
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168 fLastStatus = status;
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169 if (fStatusLine !is null && !fStatusLine.isDisposed()) {
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170 updateButtonsEnableState(status);
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171 fStatusLine.setErrorStatus(status);
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172 }
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173 }
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174
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175 /**
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176 * Returns the last status.
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177 *
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178 * @return IStatus
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179 */
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180 public IStatus getStatus() {
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181 return fLastStatus;
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182 }
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183
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184 /**
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185 * Updates the status of the ok button to reflect the given status.
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186 * Subclasses may override this method to update additional buttons.
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187 *
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188 * @param status
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189 * the status.
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190 */
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191 protected void updateButtonsEnableState(IStatus status) {
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192 if (fOkButton !is null && !fOkButton.isDisposed()) {
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193 fOkButton.setEnabled(!status.matches(IStatus.ERROR));
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194 }
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195 }
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196
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197 /*
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198 * @see Window#create(Shell)
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199 */
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200 protected override void configureShell(Shell shell) {
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201 super.configureShell(shell);
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202 if (fTitle !is null) {
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203 shell.setText(fTitle);
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204 }
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205 }
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206
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207 /*
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208 * @see Window#create()
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209 */
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210 public override void create() {
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211 super.create();
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212 if (fLastStatus !is null) {
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213 // policy: dialogs are not allowed to come up with an error message
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214 if (fLastStatus.matches(IStatus.ERROR)) {
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215 // remove the message
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216 fLastStatus = new Status(IStatus.ERROR,
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217 fLastStatus.getPlugin(), fLastStatus.getCode(),
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218 "", fLastStatus.getException()); //$NON-NLS-1$
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219 }
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220 updateStatus(fLastStatus);
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221 }
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222 }
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223
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224 /*
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225 * @see Dialog#createButtonsForButtonBar(Composite)
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226 */
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227 protected override void createButtonsForButtonBar(Composite parent) {
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228 fOkButton = createButton(parent, IDialogConstants.OK_ID,
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229 IDialogConstants.OK_LABEL, true);
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230 createButton(parent, IDialogConstants.CANCEL_ID,
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231 IDialogConstants.CANCEL_LABEL, false);
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232 }
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233
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234 /*
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235 * @see Dialog#createButtonBar(Composite)
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236 */
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237 protected override Control createButtonBar(Composite parent) {
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238 Composite composite = new Composite(parent, DWT.NULL);
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239 GridLayout layout = new GridLayout();
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240
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241 if (fStatusLineAboveButtons) {
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242 layout.numColumns = 1;
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243 } else {
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244 layout.numColumns = 2;
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245 }
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246
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247 layout.marginHeight = 0;
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248 layout.marginLeft = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);
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249 layout.marginWidth = 0;
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250 composite.setLayout(layout);
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251 composite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
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252
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253 if (!fStatusLineAboveButtons && isHelpAvailable()) {
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254 createHelpControl(composite);
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255 }
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256 fStatusLine = new MessageLine(composite);
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257 fStatusLine.setAlignment(DWT.LEFT);
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258 GridData statusData = new GridData(GridData.FILL_HORIZONTAL);
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259 fStatusLine.setErrorStatus(null);
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260 if (fStatusLineAboveButtons && isHelpAvailable()) {
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261 statusData.horizontalSpan = 2;
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262 createHelpControl(composite);
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263 }
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264 fStatusLine.setLayoutData(statusData);
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265 applyDialogFont(composite);
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266
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267 /*
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268 * Create the rest of the button bar, but tell it not to create a help
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269 * button (we've already created it).
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270 */
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271 bool helpAvailable = isHelpAvailable();
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272 setHelpAvailable(false);
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273 super.createButtonBar(composite);
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274 setHelpAvailable(helpAvailable);
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275 return composite;
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276 }
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277
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278 /**
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279 * Sets the title for this dialog.
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280 *
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281 * @param title
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282 * the title.
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283 */
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284 public void setTitle(String title) {
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285 fTitle = title !is null ? title : ""; //$NON-NLS-1$
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286 Shell shell = getShell();
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287 if ((shell !is null) && !shell.isDisposed()) {
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288 shell.setText(fTitle);
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289 }
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290 }
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291
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292 /**
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293 * Sets the image for this dialog.
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294 *
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295 * @param image
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296 * the image.
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297 */
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298 public void setImage(Image image) {
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299 fImage = image;
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300 Shell shell = getShell();
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301 if ((shell !is null) && !shell.isDisposed()) {
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302 shell.setImage(fImage);
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303 }
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304 }
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305
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306 }