1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.gui.widgets;
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3 |
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4 | import java.awt.Component;
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5 | import java.io.File;
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6 | import java.util.Collection;
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7 | import java.util.Collections;
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8 | import java.util.function.Predicate;
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9 |
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10 | import javax.swing.Action;
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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.actions.DiskAccessAction;
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15 | import org.openstreetmap.josm.actions.ExtensionFileFilter;
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16 | import org.openstreetmap.josm.actions.SaveActionBase;
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17 | import org.openstreetmap.josm.data.preferences.BooleanProperty;
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18 | import org.openstreetmap.josm.gui.MainApplication;
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19 | import org.openstreetmap.josm.spi.preferences.Config;
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20 | import org.openstreetmap.josm.tools.PlatformManager;
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21 | import org.openstreetmap.josm.tools.Utils;
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22 |
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23 | /**
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24 | * A chained utility class used to create and open {@link AbstractFileChooser} dialogs.<br>
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25 | * Use only this class if you need to control specifically your AbstractFileChooser dialog.<br>
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26 | * <p>
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27 | * A simpler usage is to call the {@link DiskAccessAction#createAndOpenFileChooser} methods.
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28 | *
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29 | * @since 5438 (creation)
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30 | * @since 7578 (rename)
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31 | */
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32 | public class FileChooserManager {
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33 |
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34 | /**
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35 | * Property to enable use of native file dialogs.
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36 | */
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37 | public static final BooleanProperty PROP_USE_NATIVE_FILE_DIALOG = new BooleanProperty("use.native.file.dialog",
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38 | // Native dialogs do not support file filters, so do not set them as default, except for OS X where they never worked
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39 | PlatformManager.isPlatformOsx());
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40 |
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41 | /**
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42 | * Property to use the details view in file dialogs.
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43 | */
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44 | public static final BooleanProperty PROP_USE_DETAILS_VIEW_FILE_DIALOG = new BooleanProperty("use.details.view.file.dialog", false);
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45 |
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46 | private final boolean open;
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47 | private final String lastDirProperty;
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48 | private final String curDir;
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49 |
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50 | private boolean multiple;
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51 | private String title;
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52 | private Collection<? extends FileFilter> filters;
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53 | private FileFilter defaultFilter;
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54 | private int selectionMode = JFileChooser.FILES_ONLY;
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55 | private String extension;
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56 | private Predicate<ExtensionFileFilter> additionalTypes = ignore -> false;
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57 | private File file;
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58 |
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59 | private AbstractFileChooser fc;
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60 |
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61 | /**
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62 | * Creates a new {@code FileChooserManager} with default values.
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63 | * @see #createFileChooser
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64 | */
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65 | public FileChooserManager() {
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66 | this(false, null, null);
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67 | }
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68 |
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69 | /**
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70 | * Creates a new {@code FileChooserManager}.
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71 | * @param open If true, "Open File" dialogs will be created. If false, "Save File" dialogs will be created.
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72 | * @see #createFileChooser
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73 | */
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74 | public FileChooserManager(boolean open) {
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75 | this(open, null);
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76 | }
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77 |
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78 | // CHECKSTYLE.OFF: LineLength
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79 |
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80 | /**
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81 | * Creates a new {@code FileChooserManager}.
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82 | * @param open If true, "Open File" dialogs will be created. If false, "Save File" dialogs will be created.
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83 | * @param lastDirProperty The name of the property used to get the last directory. This directory is used to initialize the AbstractFileChooser.
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84 | * Then, if the user effectively chooses a file or a directory, this property will be updated to the directory path.
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85 | * @see #createFileChooser
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86 | */
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87 | public FileChooserManager(boolean open, String lastDirProperty) {
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88 | this(open, lastDirProperty, null);
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89 | }
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90 |
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91 | /**
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92 | * Creates a new {@code FileChooserManager}.
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93 | * @param open If true, "Open File" dialogs will be created. If false, "Save File" dialogs will be created.
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94 | * @param lastDirProperty The name of the property used to get the last directory. This directory is used to initialize the AbstractFileChooser.
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95 | * Then, if the user effectively chooses a file or a directory, this property will be updated to the directory path.
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96 | * @param defaultDir The default directory used to initialize the AbstractFileChooser if the {@code lastDirProperty} property value is missing.
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97 | * @see #createFileChooser
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98 | */
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99 | public FileChooserManager(boolean open, String lastDirProperty, String defaultDir) {
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100 | this.open = open;
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101 | this.lastDirProperty = Utils.isEmpty(lastDirProperty) ? "lastDirectory" : lastDirProperty;
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102 | this.curDir = Config.getPref().get(this.lastDirProperty).isEmpty() ?
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103 | Utils.isEmpty(defaultDir) ? "." : defaultDir
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104 | : Config.getPref().get(this.lastDirProperty);
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105 | }
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106 |
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107 | // CHECKSTYLE.ON: LineLength
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108 |
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109 | /**
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110 | * Replies the {@code AbstractFileChooser} that has been previously created.
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111 | * @return The {@code AbstractFileChooser} that has been previously created, or {@code null} if it has not been created yet.
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112 | * @see #createFileChooser
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113 | */
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114 | public final AbstractFileChooser getFileChooser() {
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115 | return fc;
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116 | }
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117 |
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118 | /**
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119 | * Replies the initial directory used to construct the {@code AbstractFileChooser}.
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120 | * @return The initial directory used to construct the {@code AbstractFileChooser}.
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121 | */
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122 | public final String getInitialDirectory() {
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123 | return curDir;
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124 | }
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125 |
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126 | /**
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127 | * Creates a new {@link AbstractFileChooser} with default settings. All files will be accepted.
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128 | * @return this
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129 | */
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130 | public final FileChooserManager createFileChooser() {
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131 | return doCreateFileChooser();
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132 | }
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133 |
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134 | /**
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135 | * Creates a new {@link AbstractFileChooser} with given settings for a single {@code FileFilter}.
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136 | *
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137 | * @param multiple If true, makes the dialog allow multiple file selections
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138 | * @param title The string that goes in the dialog window's title bar
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139 | * @param filter The only file filter that will be proposed by the dialog
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140 | * @param selectionMode The selection mode that allows the user to:<br><ul>
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141 | * <li>just select files ({@code JFileChooser.FILES_ONLY})</li>
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142 | * <li>just select directories ({@code JFileChooser.DIRECTORIES_ONLY})</li>
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143 | * <li>select both files and directories ({@code JFileChooser.FILES_AND_DIRECTORIES})</li></ul>
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144 | * @return this
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145 | * @see DiskAccessAction#createAndOpenFileChooser(boolean, boolean, String, FileFilter, int, String)
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146 | */
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147 | public final FileChooserManager createFileChooser(boolean multiple, String title, FileFilter filter, int selectionMode) {
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148 | multiple(multiple);
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149 | title(title);
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150 | filters(Collections.singleton(filter));
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151 | defaultFilter(filter);
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152 | selectionMode(selectionMode);
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153 |
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154 | doCreateFileChooser();
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155 | fc.setAcceptAllFileFilterUsed(false);
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156 | return this;
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157 | }
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158 |
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159 | /**
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160 | * Creates a new {@link AbstractFileChooser} with given settings for a collection of {@code FileFilter}s.
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161 | *
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162 | * @param multiple If true, makes the dialog allow multiple file selections
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163 | * @param title The string that goes in the dialog window's title bar
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164 | * @param filters The file filters that will be proposed by the dialog
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165 | * @param defaultFilter The file filter that will be selected by default
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166 | * @param selectionMode The selection mode that allows the user to:<br><ul>
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167 | * <li>just select files ({@code JFileChooser.FILES_ONLY})</li>
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168 | * <li>just select directories ({@code JFileChooser.DIRECTORIES_ONLY})</li>
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169 | * <li>select both files and directories ({@code JFileChooser.FILES_AND_DIRECTORIES})</li></ul>
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170 | * @return this
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171 | * @see DiskAccessAction#createAndOpenFileChooser(boolean, boolean, String, Collection, FileFilter, int, String)
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172 | */
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173 | public final FileChooserManager createFileChooser(boolean multiple, String title, Collection<? extends FileFilter> filters,
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174 | FileFilter defaultFilter, int selectionMode) {
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175 | multiple(multiple);
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176 | title(title);
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177 | filters(filters);
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178 | defaultFilter(defaultFilter);
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179 | selectionMode(selectionMode);
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180 | return doCreateFileChooser();
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181 | }
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182 |
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183 | /**
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184 | * Creates a new {@link AbstractFileChooser} with given settings for a file extension.
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185 | *
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186 | * @param multiple If true, makes the dialog allow multiple file selections
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187 | * @param title The string that goes in the dialog window's title bar
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188 | * @param extension The file extension that will be selected as the default file filter
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189 | * @param allTypes If true, all the files types known by JOSM will be proposed in the "file type" combobox.
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190 | * If false, only the file filters that include {@code extension} will be proposed
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191 | * @param selectionMode The selection mode that allows the user to:<br><ul>
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192 | * <li>just select files ({@code JFileChooser.FILES_ONLY})</li>
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193 | * <li>just select directories ({@code JFileChooser.DIRECTORIES_ONLY})</li>
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194 | * <li>select both files and directories ({@code JFileChooser.FILES_AND_DIRECTORIES})</li></ul>
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195 | * @return this
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196 | * @see DiskAccessAction#createAndOpenFileChooser(boolean, boolean, String, FileFilter, int, String)
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197 | */
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198 | public final FileChooserManager createFileChooser(boolean multiple, String title, String extension, boolean allTypes, int selectionMode) {
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199 | multiple(multiple);
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200 | title(title);
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201 | extension(extension);
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202 | allTypes(allTypes);
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203 | selectionMode(selectionMode);
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204 | return doCreateFileChooser();
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205 | }
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206 |
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207 | /**
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208 | * Builder method to set {@code multiple} property.
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209 | * @param value If true, makes the dialog allow multiple file selections
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210 | * @return this
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211 | */
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212 | public FileChooserManager multiple(boolean value) {
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213 | multiple = value;
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214 | return this;
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215 | }
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216 |
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217 | /**
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218 | * Builder method to set {@code title} property.
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219 | * @param value The string that goes in the dialog window's title bar
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220 | * @return this
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221 | */
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222 | public FileChooserManager title(String value) {
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223 | title = value;
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224 | return this;
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225 | }
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226 |
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227 | /**
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228 | * Builder method to set {@code filters} property.
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229 | * @param value The file filters that will be proposed by the dialog
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230 | * @return this
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231 | */
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232 | public FileChooserManager filters(Collection<? extends FileFilter> value) {
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233 | filters = value;
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234 | return this;
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235 | }
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236 |
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237 | /**
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238 | * Builder method to set {@code defaultFilter} property.
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239 | * @param value The file filter that will be selected by default
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240 | * @return this
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241 | */
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242 | public FileChooserManager defaultFilter(FileFilter value) {
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243 | defaultFilter = value;
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244 | return this;
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245 | }
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246 |
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247 | /**
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248 | * Builder method to set {@code selectionMode} property.
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249 | * @param value The selection mode that allows the user to:<br><ul>
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250 | * <li>just select files ({@code JFileChooser.FILES_ONLY})</li>
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251 | * <li>just select directories ({@code JFileChooser.DIRECTORIES_ONLY})</li>
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252 | * <li>select both files and directories ({@code JFileChooser.FILES_AND_DIRECTORIES})</li></ul>
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253 | * @return this
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254 | */
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255 | public FileChooserManager selectionMode(int value) {
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256 | selectionMode = value;
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257 | return this;
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258 | }
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259 |
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260 | /**
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261 | * Builder method to set {@code extension} property.
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262 | * @param value The file extension that will be selected as the default file filter
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263 | * @return this
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264 | */
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265 | public FileChooserManager extension(String value) {
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266 | extension = value;
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267 | return this;
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268 | }
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269 |
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270 | /**
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271 | * Builder method to set {@code additionalTypes} property.
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272 | * @param value matching types will additionally be added to the "file type" combobox.
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273 | * @return this
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274 | */
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275 | public FileChooserManager additionalTypes(Predicate<ExtensionFileFilter> value) {
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276 | additionalTypes = value;
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277 | return this;
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278 | }
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279 |
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280 | /**
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281 | * Builder method to set {@code allTypes} property.
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282 | * @param value If true, all the files types known by JOSM will be proposed in the "file type" combobox.
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283 | * If false, only the file filters that include {@code extension} will be proposed
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284 | * @return this
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285 | */
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286 | public FileChooserManager allTypes(boolean value) {
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287 | additionalTypes = ignore -> value;
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288 | return this;
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289 | }
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290 |
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291 | /**
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292 | * Builder method to set {@code file} property.
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293 | * @param value {@link File} object with default filename
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294 | * @return this
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295 | */
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296 | public FileChooserManager file(File value) {
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297 | file = value;
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298 | return this;
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299 | }
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300 |
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301 | /**
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302 | * Builds {@code FileChooserManager} object using properties set by builder methods or default values.
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303 | * @return this
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304 | */
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305 | public FileChooserManager doCreateFileChooser() {
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306 | File f = new File(curDir);
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307 | // Use native dialog is preference is set, unless an unsupported selection mode is specifically wanted
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308 | if (PROP_USE_NATIVE_FILE_DIALOG.get() && NativeFileChooser.supportsSelectionMode(selectionMode)) {
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309 | fc = new NativeFileChooser(f);
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310 | } else {
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311 | fc = new SwingFileChooser(f);
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312 | if (PROP_USE_DETAILS_VIEW_FILE_DIALOG.get()) {
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313 | // See sun.swing.FilePane.ACTION_VIEW_DETAILS
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314 | Action details = fc.getActionMap().get("viewTypeDetails");
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315 | if (details != null) {
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316 | details.actionPerformed(null);
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317 | }
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318 | }
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319 | }
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320 |
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321 | if (title != null) {
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322 | fc.setDialogTitle(title);
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323 | }
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324 |
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325 | fc.setFileSelectionMode(selectionMode);
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326 | fc.setMultiSelectionEnabled(multiple);
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327 | fc.setAcceptAllFileFilterUsed(false);
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328 | fc.setSelectedFile(this.file);
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329 |
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330 | if (filters != null) {
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331 | for (FileFilter filter : filters) {
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332 | fc.addChoosableFileFilter(filter);
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333 | }
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334 | if (defaultFilter != null) {
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335 | fc.setFileFilter(defaultFilter);
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336 | }
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337 | } else if (open) {
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338 | ExtensionFileFilter.applyChoosableImportFileFilters(fc, extension, additionalTypes);
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339 | } else {
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340 | ExtensionFileFilter.applyChoosableExportFileFilters(fc, extension, additionalTypes);
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341 | }
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342 | return this;
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343 | }
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344 |
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345 | /**
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346 | * Opens the {@code AbstractFileChooser} that has been created.
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347 | * @return the {@code AbstractFileChooser} if the user effectively chooses a file or directory.
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348 | * {@code null} if the user cancelled the dialog.
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349 | */
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350 | public final AbstractFileChooser openFileChooser() {
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351 | return openFileChooser(null);
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352 | }
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353 |
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354 | /**
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355 | * Opens the {@code AbstractFileChooser} that has been created and waits for the user to choose a file/directory,
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356 | * or cancel the dialog.<br>
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357 | * When the user chooses a file or directory, the {@code lastDirProperty} is updated to the chosen directory path.
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358 | *
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359 | * @param parent The Component used as the parent of the AbstractFileChooser. If null,
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360 | * uses {@code MainApplication.getMainFrame()}.
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361 | * @return the {@code AbstractFileChooser} if the user effectively chooses
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362 | * a file or directory.{@code null} if the user cancelled the dialog.
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363 | */
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364 | public AbstractFileChooser openFileChooser(Component parent) {
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365 | if (fc == null)
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366 | doCreateFileChooser();
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367 |
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368 | if (parent == null) {
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369 | parent = MainApplication.getMainFrame();
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370 | }
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371 |
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372 | int answer = open ? fc.showOpenDialog(parent) : fc.showSaveDialog(parent);
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373 | if (answer != JFileChooser.APPROVE_OPTION) {
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374 | return null;
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375 | }
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376 |
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377 | if (!fc.getCurrentDirectory().getAbsolutePath().equals(curDir)) {
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378 | Config.getPref().put(lastDirProperty, fc.getCurrentDirectory().getAbsolutePath());
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379 | }
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380 |
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381 | if (!open && !FileChooserManager.PROP_USE_NATIVE_FILE_DIALOG.get() &&
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382 | !SaveActionBase.confirmOverwrite(fc.getSelectedFile())) {
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383 | return null;
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384 | }
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385 | return fc;
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386 | }
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387 |
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388 | /**
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389 | * Opens the file chooser dialog, then checks if filename has the given extension.
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390 | * If not, adds the extension and asks for overwrite if filename exists.
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391 | *
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392 | * @return the {@code File} or {@code null} if the user cancelled the dialog.
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393 | */
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394 | public File getFileForSave() {
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395 | return SaveActionBase.checkFileAndConfirmOverWrite(openFileChooser(), extension);
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396 | }
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397 | }
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