Mercurial > projects > dwt2
annotate org.eclipse.jface/src/org/eclipse/jface/preference/FileFieldEditor.d @ 12:bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
author | Frank Benoit <benoit@tionex.de> |
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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.preference.FileFieldEditor; |
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14 |
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15 import org.eclipse.jface.preference.StringButtonFieldEditor; |
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16 // import java.io.File; |
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17 |
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18 import org.eclipse.swt.SWT; |
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19 import org.eclipse.swt.widgets.Composite; |
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20 import org.eclipse.swt.widgets.FileDialog; |
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21 import org.eclipse.jface.resource.JFaceResources; |
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22 |
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23 import java.lang.all; |
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24 import java.util.List; |
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25 import java.util.Set; |
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26 import tango.io.FilePath; |
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27 static import tango.io.Path; |
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28 import tango.io.FileSystem; |
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29 |
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30 /** |
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31 * A field editor for a file path type preference. A standard file |
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32 * dialog appears when the user presses the change button. |
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33 */ |
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34 public class FileFieldEditor : StringButtonFieldEditor { |
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35 |
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36 /** |
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37 * List of legal file extension suffixes, or <code>null</code> |
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38 * for system defaults. |
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39 */ |
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40 private String[] extensions = null; |
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41 |
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42 /** |
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43 * Indicates whether the path must be absolute; |
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44 * <code>false</code> by default. |
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45 */ |
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46 private bool enforceAbsolute = false; |
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47 |
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48 /** |
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49 * Creates a new file field editor |
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50 */ |
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51 protected this() { |
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52 } |
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53 |
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54 /** |
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55 * Creates a file field editor. |
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56 * |
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57 * @param name the name of the preference this field editor works on |
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58 * @param labelText the label text of the field editor |
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59 * @param parent the parent of the field editor's control |
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60 */ |
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61 public this(String name, String labelText, Composite parent) { |
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62 this(name, labelText, false, parent); |
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63 } |
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64 |
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65 /** |
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66 * Creates a file field editor. |
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67 * |
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68 * @param name the name of the preference this field editor works on |
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69 * @param labelText the label text of the field editor |
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70 * @param enforceAbsolute <code>true</code> if the file path |
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71 * must be absolute, and <code>false</code> otherwise |
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72 * @param parent the parent of the field editor's control |
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73 */ |
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74 public this(String name, String labelText, bool enforceAbsolute, Composite parent) { |
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75 this(name, labelText, enforceAbsolute, VALIDATE_ON_FOCUS_LOST, parent); |
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76 } |
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77 /** |
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78 * Creates a file field editor. |
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79 * |
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80 * @param name the name of the preference this field editor works on |
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81 * @param labelText the label text of the field editor |
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82 * @param enforceAbsolute <code>true</code> if the file path |
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83 * must be absolute, and <code>false</code> otherwise |
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84 * @param validationStrategy either {@link StringButtonFieldEditor#VALIDATE_ON_KEY_STROKE} |
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85 * to perform on the fly checking, or {@link StringButtonFieldEditor#VALIDATE_ON_FOCUS_LOST} |
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86 * (the default) to perform validation only after the text has been typed in |
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87 * @param parent the parent of the field editor's control. |
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88 * @since 3.4 |
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89 * @see StringButtonFieldEditor#VALIDATE_ON_KEY_STROKE |
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90 * @see StringButtonFieldEditor#VALIDATE_ON_FOCUS_LOST |
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91 */ |
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92 public this(String name, String labelText, |
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93 bool enforceAbsolute, int validationStrategy, Composite parent) { |
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94 init(name, labelText); |
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95 this.enforceAbsolute = enforceAbsolute; |
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96 setErrorMessage(JFaceResources |
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97 .getString("FileFieldEditor.errorMessage"));//$NON-NLS-1$ |
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98 setChangeButtonText(JFaceResources.getString("openBrowse"));//$NON-NLS-1$ |
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99 setValidateStrategy(validationStrategy); |
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100 createControl(parent); |
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101 } |
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102 |
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103 /* (non-Javadoc) |
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104 * Method declared on StringButtonFieldEditor. |
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105 * Opens the file chooser dialog and returns the selected file. |
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106 */ |
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107 protected override String changePressed() { |
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108 auto f = new FilePath(tango.io.Path.standard(getTextControl().getText())); |
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109 if (!f.exists()) { |
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110 f = cast(FilePath)null; |
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111 } |
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112 auto d = getFile(f); |
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113 if (d is null) { |
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114 return null; |
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115 } |
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116 |
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117 return FileSystem.toAbsolute( d ).native.toString(); |
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118 } |
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119 |
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120 /* (non-Javadoc) |
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121 * Method declared on StringFieldEditor. |
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122 * Checks whether the text input field specifies an existing file. |
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123 */ |
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124 protected override bool checkState() { |
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125 |
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126 String msg = null; |
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127 |
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128 String path = getTextControl().getText(); |
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129 if (path !is null) { |
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130 path = path.trim(); |
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131 } else { |
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132 path = "";//$NON-NLS-1$ |
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133 } |
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134 if (path.length is 0) { |
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135 if (!isEmptyStringAllowed()) { |
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136 msg = getErrorMessage(); |
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137 } |
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138 } else { |
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139 auto file = new FilePath(tango.io.Path.standard(path)); |
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140 if (/+file.isFile()+/ file.exists && !file.isFolder ) { |
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141 if (enforceAbsolute && !file.isAbsolute()) { |
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142 msg = JFaceResources |
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143 .getString("FileFieldEditor.errorMessage2");//$NON-NLS-1$ |
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144 } |
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145 } else { |
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146 msg = getErrorMessage(); |
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147 } |
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148 } |
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149 |
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150 if (msg !is null) { // error |
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151 showErrorMessage(msg); |
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152 return false; |
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153 } |
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154 |
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155 // OK! |
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156 clearErrorMessage(); |
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157 return true; |
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158 } |
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159 |
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160 /** |
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161 * Helper to open the file chooser dialog. |
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162 * @param startingDirectory the directory to open the dialog on. |
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163 * @return File The File the user selected or <code>null</code> if they |
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164 * do not. |
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165 */ |
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166 private FilePath getFile(FilePath startingDirectory) { |
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167 |
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168 FileDialog dialog = new FileDialog(getShell(), SWT.OPEN); |
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169 if (startingDirectory !is null) { |
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170 dialog.setFileName(startingDirectory.path()); |
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171 } |
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172 if (extensions !is null) { |
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173 dialog.setFilterExtensions(extensions); |
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174 } |
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175 String file = dialog.open(); |
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176 if (file !is null) { |
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177 file = file.trim(); |
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178 if (file.length > 0) { |
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179 return new FilePath(tango.io.Path.standard(file)); |
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180 } |
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181 } |
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182 |
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183 return null; |
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184 } |
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185 |
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186 /** |
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187 * Sets this file field editor's file extension filter. |
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188 * |
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189 * @param extensions a list of file extension, or <code>null</code> |
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190 * to set the filter to the system's default value |
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191 */ |
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192 public void setFileExtensions(String[] extensions) { |
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193 this.extensions = extensions; |
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194 } |
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195 } |