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'databene commons' is an open source Java library by Volker Bergmann.
It provides extensions to the Java core library by utility classes, abstract concepts
and concrete implementations.
/*
* Copyright (C) 2004-2015 Volker Bergmann ([email protected]).
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.databene.commons.ui.swing;
import java.awt.Component;
import java.io.File;
import javax.swing.JFileChooser;
import org.databene.commons.Assert;
import org.databene.commons.ui.FileChooser;
import org.databene.commons.ui.FileOperation;
import org.databene.commons.ui.FileTypeSupport;
/**
* Swing implementation of the {@link FileChooser} interface.
* Created at 14.12.2008 14:34:50
* @since 0.5.13
* @author Volker Bergmann
*/
public class SwingFileChooser extends JFileChooser implements FileChooser {
private static final long serialVersionUID = 3258145358496737942L;
private FileOperation operation;
public SwingFileChooser(FileTypeSupport supportedTypes, FileOperation operation) {
Assert.notNull(supportedTypes, "supportedTypes");
Assert.notNull(operation, "operation");
this.operation = operation;
super.setFileSelectionMode(fileSelectionMode(supportedTypes));
super.setDialogType(dialogType(operation));
}
@Override
public void setTitle(String title) {
setDialogTitle(title);
}
@Override
public File chooseFile(Component component) {
int approval;
switch (operation) {
case OPEN: approval = showOpenDialog(component); break;
case SAVE: approval = showSaveDialog(component); break;
default: approval = showDialog(component, "Choose"); break;
}
return (approval == APPROVE_OPTION ? super.getSelectedFile() : null);
}
// private helpers -------------------------------------------------------------------------------------------------
private static int dialogType(FileOperation operation) {
switch (operation) {
case OPEN: return JFileChooser.OPEN_DIALOG;
case SAVE: return JFileChooser.SAVE_DIALOG;
default: return JFileChooser.CUSTOM_DIALOG;
}
}
private static int fileSelectionMode(FileTypeSupport supportedTypes) {
switch (supportedTypes) {
case directoriesOnly: return JFileChooser.DIRECTORIES_ONLY;
case filesOnly: return JFileChooser.FILES_ONLY;
case filesAndDirectories: return JFileChooser.FILES_AND_DIRECTORIES;
default: throw new IllegalArgumentException("Illegal option: " + supportedTypes);
}
}
}