1 | // License: GPL. Copyright 2007 by Immanuel Scholz and others
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2 | package org.openstreetmap.josm.actions;
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3 |
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4 | import java.io.File;
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5 | import java.util.ArrayList;
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6 | import java.util.Collections;
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7 | import java.util.Comparator;
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8 | import java.util.LinkedList;
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9 | import java.util.List;
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10 |
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11 | import javax.swing.JFileChooser;
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12 | import javax.swing.filechooser.FileFilter;
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13 |
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14 | import org.openstreetmap.josm.io.AllFormatsImporter;
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15 | import org.openstreetmap.josm.io.FileExporter;
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16 | import org.openstreetmap.josm.io.FileImporter;
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17 |
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18 | /**
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19 | * A file filter that filters after the extension. Also includes a list of file
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20 | * filters used in JOSM.
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21 | *
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22 | */
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23 | public class ExtensionFileFilter extends FileFilter {
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24 |
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25 | /**
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26 | * list of supported formats
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27 | */
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28 | public static ArrayList<FileImporter> importers;
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29 |
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30 | public static ArrayList<FileExporter> exporters;
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31 |
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32 | // add some file types only if the relevant classes are there;
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33 | // this gives us the option to painlessly drop them from the .jar
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34 | // and build JOSM versions without support for these formats
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35 |
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36 | static {
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37 |
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38 | importers = new ArrayList<FileImporter>();
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39 |
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40 | String[] importerNames = {
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41 | "org.openstreetmap.josm.io.OsmImporter",
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42 | "org.openstreetmap.josm.io.OsmGzipImporter",
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43 | "org.openstreetmap.josm.io.GpxImporter",
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44 | "org.openstreetmap.josm.io.NMEAImporter",
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45 | "org.openstreetmap.josm.io.OsmBzip2Importer",
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46 | "org.openstreetmap.josm.io.JpgImporter",
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47 | "org.openstreetmap.josm.io.AllFormatsImporter"
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48 | };
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49 |
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50 | for (String classname : importerNames) {
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51 | try {
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52 | Class<?> klass = Class.forName(classname);
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53 | importers.add((FileImporter) klass.newInstance());
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54 | } catch (Exception e) {}
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55 | }
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56 |
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57 | exporters = new ArrayList<FileExporter>();
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58 |
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59 | String[] exporterNames = {
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60 | "org.openstreetmap.josm.io.GpxExporter",
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61 | "org.openstreetmap.josm.io.OsmExporter",
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62 | "org.openstreetmap.josm.io.OsmGzipExporter",
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63 | "org.openstreetmap.josm.io.OsmBzip2Exporter"
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64 | };
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65 |
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66 | for (String classname : exporterNames) {
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67 | try {
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68 | Class<?> klass = Class.forName(classname);
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69 | exporters.add((FileExporter)klass.newInstance());
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70 | } catch (Exception e) {}
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71 | }
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72 | }
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73 |
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74 | private final String extensions;
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75 | private final String description;
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76 | private final String defaultExtension;
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77 |
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78 | static protected void sort(List<ExtensionFileFilter> filters) {
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79 | Collections.sort(
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80 | filters,
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81 | new Comparator<ExtensionFileFilter>() {
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82 | private AllFormatsImporter all = new AllFormatsImporter();
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83 | public int compare(ExtensionFileFilter o1, ExtensionFileFilter o2) {
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84 | if (o1.getDescription().equals(all.filter.getDescription())) return 1;
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85 | if (o2.getDescription().equals(all.filter.getDescription())) return -1;
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86 | return o1.getDescription().compareTo(o2.getDescription());
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87 | }
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88 | }
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89 | );
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90 | }
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91 |
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92 | /**
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93 | * Replies an ordered list of {@see ExtensionFileFilter}s for importing.
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94 | * The list is ordered according to their description, an {@see AllFormatsImporter}
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95 | * is append at the end.
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96 | *
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97 | * @return an ordered list of {@see ExtensionFileFilter}s for importing.
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98 | */
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99 | public static List<ExtensionFileFilter> getImportExtensionFileFilters() {
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100 | LinkedList<ExtensionFileFilter> filters = new LinkedList<ExtensionFileFilter>();
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101 | for (FileImporter importer : importers) {
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102 | filters.add(importer.filter);
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103 | }
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104 | sort(filters);
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105 | return filters;
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106 | }
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107 |
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108 | /**
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109 | * Replies an ordered list of {@see ExtensionFileFilter}s for exporting.
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110 | * The list is ordered according to their description, an {@see AllFormatsImporter}
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111 | * is append at the end.
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112 | *
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113 | * @return an ordered list of {@see ExtensionFileFilter}s for exporting.
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114 | */
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115 | public static List<ExtensionFileFilter> getExportExtensionFileFilters() {
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116 | LinkedList<ExtensionFileFilter> filters = new LinkedList<ExtensionFileFilter>();
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117 | for (FileExporter exporter : exporters) {
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118 | if (filters.contains(exporter.filter)) {
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119 | continue;
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120 | }
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121 | filters.add(exporter.filter);
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122 | }
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123 | sort(filters);
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124 | return filters;
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125 | }
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126 |
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127 | /**
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128 | * Replies the default {@see ExtensionFileFilter} for a given extension
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129 | *
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130 | * @param extension the extension
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131 | * @return the default {@see ExtensionFileFilter} for a given extension
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132 | */
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133 | public static ExtensionFileFilter getDefaultImportExtensionFileFilter(String extension) {
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134 | if (extension == null) return new AllFormatsImporter().filter;
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135 | for (FileImporter importer : importers) {
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136 | if (extension.equals(importer.filter.getDefaultExtension()))
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137 | return importer.filter;
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138 | }
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139 | return new AllFormatsImporter().filter;
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140 | }
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141 |
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142 | /**
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143 | * Replies the default {@see ExtensionFileFilter} for a given extension
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144 | *
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145 | * @param extension the extension
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146 | * @return the default {@see ExtensionFileFilter} for a given extension
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147 | */
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148 | public static ExtensionFileFilter getDefaultExportExtensionFileFilter(String extension) {
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149 | if (extension == null) return new AllFormatsImporter().filter;
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150 | for (FileExporter exporter : exporters) {
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151 | if (extension.equals(exporter.filter.getDefaultExtension()))
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152 | return exporter.filter;
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153 | }
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154 | return new AllFormatsImporter().filter;
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155 | }
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156 |
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157 | /**
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158 | * Applies the choosable {@see FileFilter} to a {@see JFileChooser} before using the
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159 | * file chooser for selecting a file for reading.
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160 | *
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161 | * @param fileChooser the file chooser
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162 | * @param extension the default extension
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163 | */
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164 | public static void applyChoosableImportFileFilters(JFileChooser fileChooser, String extension) {
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165 | for (ExtensionFileFilter filter: getImportExtensionFileFilters()) {
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166 | fileChooser.addChoosableFileFilter(filter);
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167 | }
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168 | fileChooser.setFileFilter(getDefaultImportExtensionFileFilter(extension));
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169 | }
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170 |
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171 | /**
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172 | * Applies the choosable {@see FileFilter} to a {@see JFileChooser} before using the
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173 | * file chooser for selecting a file for writing.
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174 | *
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175 | * @param fileChooser the file chooser
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176 | * @param extension the default extension
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177 | */
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178 | public static void applyChoosableExportFileFilters(JFileChooser fileChooser, String extension) {
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179 | for (ExtensionFileFilter filter: getExportExtensionFileFilters()) {
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180 | fileChooser.addChoosableFileFilter(filter);
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181 | }
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182 | fileChooser.setFileFilter(getDefaultExportExtensionFileFilter(extension));
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183 | }
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184 |
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185 | /**
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186 | * Construct an extension file filter by giving the extension to check after.
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187 | */
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188 | public ExtensionFileFilter(String extension, String defaultExtension, String description) {
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189 | this.extensions = extension;
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190 | this.defaultExtension = defaultExtension;
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191 | this.description = description;
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192 | }
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193 |
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194 | public boolean acceptName(String filename) {
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195 | String name = filename.toLowerCase();
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196 | for (String ext : extensions.split(","))
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197 | if (name.endsWith("."+ext))
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198 | return true;
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199 | return false;
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200 | }
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201 |
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202 | @Override public boolean accept(File pathname) {
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203 | if (pathname.isDirectory())
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204 | return true;
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205 | return acceptName(pathname.getName());
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206 | }
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207 |
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208 | @Override public String getDescription() {
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209 | return description;
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210 | }
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211 |
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212 | public String getDefaultExtension() {
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213 | return defaultExtension;
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214 | }
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215 |
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216 | @Override
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217 | public int hashCode() {
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218 | final int prime = 31;
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219 | int result = 1;
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220 | result = prime * result + ((defaultExtension == null) ? 0 : defaultExtension.hashCode());
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221 | result = prime * result + ((description == null) ? 0 : description.hashCode());
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222 | result = prime * result + ((extensions == null) ? 0 : extensions.hashCode());
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223 | return result;
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224 | }
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225 |
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226 | @Override
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227 | public boolean equals(Object obj) {
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228 | if (this == obj)
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229 | return true;
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230 | if (obj == null)
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231 | return false;
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232 | if (getClass() != obj.getClass())
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233 | return false;
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234 | ExtensionFileFilter other = (ExtensionFileFilter) obj;
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235 | if (defaultExtension == null) {
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236 | if (other.defaultExtension != null)
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237 | return false;
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238 | } else if (!defaultExtension.equals(other.defaultExtension))
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239 | return false;
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240 | if (description == null) {
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241 | if (other.description != null)
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242 | return false;
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243 | } else if (!description.equals(other.description))
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244 | return false;
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245 | if (extensions == null) {
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246 | if (other.extensions != null)
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247 | return false;
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248 | } else if (!extensions.equals(other.extensions))
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249 | return false;
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250 | return true;
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251 | }
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252 | }
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