com.mgmtp.perfload.loadprofiles.ui.component.DoubleCellEditor.java Source code

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Here is the source code for com.mgmtp.perfload.loadprofiles.ui.component.DoubleCellEditor.java

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/*
 * Copyright (c) 2014 mgm technology partners GmbH
 *
 * 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 com.mgmtp.perfload.loadprofiles.ui.component;

import static org.apache.commons.lang3.StringUtils.isBlank;

import java.awt.Color;
import java.text.DecimalFormat;
import java.text.ParseException;

import javax.swing.DefaultCellEditor;
import javax.swing.JTextField;
import javax.swing.SwingConstants;
import javax.swing.border.LineBorder;

/**
 * @author rnaegele
 */
public class DoubleCellEditor extends DefaultCellEditor {

    private static final DecimalFormat FORMAT = new DecimalFormat("0.00");

    private Double value;

    public DoubleCellEditor() {
        super(new JTextField());
        final JTextField textField = (JTextField) getComponent();
        textField.setHorizontalAlignment(SwingConstants.RIGHT);
        delegate = new EditorDelegate() {
            @Override
            public void setValue(final Object value) {
                textField.setText(value != null ? FORMAT.format(value) : null);
            }

            @Override
            public Object getCellEditorValue() {
                return textField.getText();
            }
        };
        textField.addActionListener(delegate);
    }

    @Override
    public boolean stopCellEditing() {
        String s = (String) super.getCellEditorValue();
        JTextField textField = (JTextField) getComponent();

        if (isBlank(s)) {
            textField.setBorder(new LineBorder(Color.red));
            return false;
        }

        try {
            value = Double.valueOf(s);
        } catch (NumberFormatException ex2) {
            try {
                Number n = FORMAT.parse(s);
                value = n.doubleValue();
            } catch (ParseException ex1) {
                textField.setBorder(new LineBorder(Color.red));
                textField.selectAll();
                return false;
            }
        }

        return super.stopCellEditing();
    }

    @Override
    public Object getCellEditorValue() {
        return value;
    }
}