/*******************************************************************************
* Copyright (c) 2000, 2009 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jface.preference;
import java.io.File;
import java.util.ArrayList;
import java.util.StringTokenizer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.DirectoryDialog;
/**
* A field editor to edit directory paths.
*/
public class PathEditor extends ListEditor {
/**
* The last path, or <code>null</code> if none.
*/
private String lastPath;
/**
* The special label text for directory chooser,
* or <code>null</code> if none.
*/
private String dirChooserLabelText;
/**
* Creates a new path field editor
*/
protected PathEditor() {
}
/**
* Creates a path field editor.
*
* @param name the name of the preference this field editor works on
* @param labelText the label text of the field editor
* @param dirChooserLabelText the label text displayed for the directory chooser
* @param parent the parent of the field editor's control
*/
public PathEditor(String name, String labelText,
String dirChooserLabelText, Composite parent) {
init(name, labelText);
this.dirChooserLabelText = dirChooserLabelText;
createControl(parent);
}
/* (non-Javadoc)
* Method declared on ListEditor.
* Creates a single string from the given array by separating each
* string with the appropriate OS-specific path separator.
*/
protected String createList(String[] items) {
StringBuffer path = new StringBuffer("");//$NON-NLS-1$
for (int i = 0; i < items.length; i++) {
path.append(items[i]);
path.append(File.pathSeparator);
}
return path.toString();
}
/* (non-Javadoc)
* Method declared on ListEditor.
* Creates a new path element by means of a directory dialog.
*/
protected String getNewInputObject() {
DirectoryDialog dialog = new DirectoryDialog(getShell(), SWT.SHEET);
if (dirChooserLabelText != null) {
dialog.setMessage(dirChooserLabelText);
}
if (lastPath != null) {
if (new File(lastPath).exists()) {
dialog.setFilterPath(lastPath);
}
}
String dir = dialog.open();
if (dir != null) {
dir = dir.trim();
if (dir.length() == 0) {
return null;
}
lastPath = dir;
}
return dir;
}
/* (non-Javadoc)
* Method declared on ListEditor.
*/
protected String[] parseString(String stringList) {
StringTokenizer st = new StringTokenizer(stringList, File.pathSeparator
+ "\n\r");//$NON-NLS-1$
ArrayList v = new ArrayList();
while (st.hasMoreElements()) {
v.add(st.nextElement());
}
return (String[]) v.toArray(new String[v.size()]);
}
}