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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
 *
 *    https://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
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package org.apache.cayenne.modeler.util;

import org.apache.cayenne.modeler.undo.JComboBoxUndoListener;
import org.apache.cayenne.validation.ValidationException;

import javax.swing.JComboBox;
import java.awt.event.ActionListener;

/**
 * @since 4.1
 */
public abstract class ComboBoxAdapter {

    private JComboBox comboBox;
    private ActionListener listener;

    private JComboBoxUndoListener undoListener;

    protected ComboBoxAdapter(JComboBox comboBox) {
        this.comboBox = comboBox;
        listener = e -> updateModel();

        undoListener = new JComboBoxUndoListener();

        comboBox.addActionListener(listener);
        comboBox.addItemListener(undoListener);
    }

    public void setItem(Object item) {
        comboBox.removeActionListener(listener);
        comboBox.removeItemListener(undoListener);

        try{
            comboBox.setSelectedItem(item);
        }
        finally {
            comboBox.addActionListener(listener);
            comboBox.addItemListener(undoListener);
        }
    }

    public JComboBox getComboBox() {
        return comboBox;
    }

    /**
     * Updates bound model with document text.
     */
    protected abstract void updateModel(T item) throws ValidationException;

    public void updateModel() {
        updateModel((T)comboBox.getSelectedItem());
    }
}