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Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you 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 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.apache.cayenne.modeler.dialog;
public class UnsavedChangesDialog {
    private static final String SAVE_AND_CLOSE = "Save Changes";
    private static final String CLOSE_WITHOUT_SAVE = "Discard Changes";
    private static final String CANCEL = "Cancel";
    private static final String[] OPTIONS = new String[] {
    protected Component parent;
    protected String result = ;
    public UnsavedChangesDialog(Component parent) {
        this. = parent;
    public void show() {
        JOptionPane pane = new JOptionPane(
                "You have unsaved changes. Do you want to save them?",
        JDialog dialog = pane.createDialog("Unsaved Changes");
        Object selectedValue = pane.getValue();
        // need to do an if..else chain, since
        // sometimes values are unexpected
        if (.equals(selectedValue)) {
             = ;
        else if (.equals(selectedValue)) {
             = ;
        else {
             = ;
    public boolean shouldSave() {
        return .equals();
    public boolean shouldNotSave() {
        return .equals();
    public boolean shouldCancel() {
        return  == null || .equals();
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