001: /*BEGIN_COPYRIGHT_BLOCK
002: *
003: * Copyright (c) 2001-2007, JavaPLT group at Rice University (javaplt@rice.edu)
004: * All rights reserved.
005: *
006: * Redistribution and use in source and binary forms, with or without
007: * modification, are permitted provided that the following conditions are met:
008: * * Redistributions of source code must retain the above copyright
009: * notice, this list of conditions and the following disclaimer.
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012: * documentation and/or other materials provided with the distribution.
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014: * names of its contributors may be used to endorse or promote products
015: * derived from this software without specific prior written permission.
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017: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
018: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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036:
037: package edu.rice.cs.util.swing;
038:
039: import edu.rice.cs.util.FileOps;
040: import edu.rice.cs.util.swing.Utilities;
041:
042: import java.io.File;
043:
044: import javax.swing.JFileChooser;
045: import javax.swing.filechooser.FileFilter;
046: import javax.swing.filechooser.FileView;
047:
048: import java.awt.Component;
049:
050: public class DirectoryChooser extends JFileChooser {
051:
052: /** GUI component that owns the dialog (if any) for this directory chooser. */
053: protected Component _owner;
054:
055: /** File system root for chooser */
056: protected File _root;
057:
058: /** Creates a DirectoryChooser rooted at file system root, allowing only a single selection. */
059: public DirectoryChooser() {
060: this (null, null, false, false);
061: }
062:
063: /** Creates a DirectoryChooser rooted at the file system root, allowing only single selection. */
064: public DirectoryChooser(Component owner) {
065: this (owner, null, false, false);
066: }
067:
068: /** Creates a DirectoryChooser rooted at the file system root, allowing multiple selection as specified.
069: * @param allowMultiple whether to allow multiple selection
070: */
071: public DirectoryChooser(Component owner, boolean allowMultiple) {
072: this (owner, null, allowMultiple, false);
073: }
074:
075: /** Creates a DirectoryChooser with the given root, allowing only a single selection.
076: * @param root the root directory to display in the tree
077: */
078: public DirectoryChooser(Component owner, File root) {
079: this (owner, root, false, false);
080: }
081:
082: /** Creates a DirectoryChooser with the given root, allowing multiple selections as specified.
083: * @param root the root directory to display in the tree. If null, then show entire file system
084: * @param allowMultiple whether to allow multiple selection
085: */
086: public DirectoryChooser(Component owner, File root,
087: boolean allowMultiple, boolean showHidden) {
088: /* This super call sets current directory to root if it is valid directory, root.parentFile() if it is a valid
089: * non-directory file, and the system default otherwise. */
090: super (root);
091: _init(owner, root, allowMultiple, showHidden);
092: }
093:
094: /*---------- INITIALIZATION METHODS ----------*/
095:
096: /** Sets up the GUI components of the dialog */
097: private void _init(Component owner, final File root,
098: boolean allowMultiple, boolean showHidden) {
099:
100: // if (root != null && root.exists()) {
101: // setFileView(new FileView() {
102: // public Boolean isTraversable(File f) {
103: // return Boolean.valueOf(f.isDirectory() && FileOps.inFileTree(f, root));
104: // }});
105: // }
106:
107: _owner = owner;
108: _root = root; // may be null
109: if (root != null) {
110: if (!root.exists())
111: _root = null;
112: else if (!root.isDirectory())
113: _root = root.getParentFile();
114: }
115:
116: setMultiSelectionEnabled(allowMultiple);
117: setFileHidingEnabled(!showHidden);
118: setFileSelectionMode(DIRECTORIES_ONLY);
119: setDialogType(CUSTOM_DIALOG);
120: setApproveButtonText("Select");
121: setFileFilter(new FileFilter() {
122: public boolean accept(File f) {
123: return true;
124: }
125:
126: public String getDescription() {
127: return "All Folders";
128: }
129: });
130: }
131:
132: public int showDialog(File initialSelection) {
133: setCurrentDirectory(initialSelection);
134: return showDialog(_owner, null); // null means leave the approve button text unchanged
135: }
136:
137: /** Set the owner of this DirectoryChooser. */
138: public void setOwner(Component owner) {
139: _owner = owner;
140: }
141:
142: /** Shows the dialog with the same selection as the last time the dialog was shown. If this is the first time it is
143: * shown, then the root is selected.
144: */
145: public int showDialog() {
146: return showDialog(_owner, null);
147: }
148:
149: /** returns which directories were selected in the tree
150: * @return an array of files for the selected directories
151: */
152: public File[] getSelectedDirectories() {
153: return getSelectedFiles();
154: }
155:
156: /** returns which directory was selected in the tree
157: * @return the file for the selected directory, null if none selected
158: */
159: public File getSelectedDirectory() {
160: return getSelectedFile();
161: }
162:
163: // public boolean isTraversable(File f) {
164: // if (_root == null) return super.isTraversable(f);
165: // Utilities.show("isTraversable(" + f + ") called; _root = " + _root);
166: // return f.isDirectory() && FileOps.inFileTree(f, _root);
167: // }
168: }
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