diff options
Diffstat (limited to 'tool/src/org/antlr/v4/gui/JFileChooserConfirmOverwrite.java')
-rw-r--r-- | tool/src/org/antlr/v4/gui/JFileChooserConfirmOverwrite.java | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/tool/src/org/antlr/v4/gui/JFileChooserConfirmOverwrite.java b/tool/src/org/antlr/v4/gui/JFileChooserConfirmOverwrite.java new file mode 100644 index 0000000..59cbb69 --- /dev/null +++ b/tool/src/org/antlr/v4/gui/JFileChooserConfirmOverwrite.java @@ -0,0 +1,63 @@ +/* + * [The "BSD license"] + * Copyright (c) 2013 Terence Parr + * Copyright (c) 2013 Sam Harwell + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +package org.antlr.v4.gui; + +import javax.swing.*; +import java.io.File; + +/** + * + * @author Sam Harwell + */ +public class JFileChooserConfirmOverwrite extends JFileChooser { + + public JFileChooserConfirmOverwrite() { + setMultiSelectionEnabled(false); + } + + @Override + public void approveSelection() { + File selectedFile = getSelectedFile(); + + if (selectedFile.exists()) { + int answer = JOptionPane.showConfirmDialog(this, + "Overwrite existing file?", + "Overwrite?", + JOptionPane.YES_NO_OPTION); + if (answer != JOptionPane.YES_OPTION) { + // do not call super.approveSelection + return; + } + } + + super.approveSelection(); + } + +} |