com.esofthead.mycollab.vaadin.web.ui.NumberField.java Source code

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Here is the source code for com.esofthead.mycollab.vaadin.web.ui.NumberField.java

Source

/**
 * This file is part of mycollab-web.
 *
 * mycollab-web is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * mycollab-web is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with mycollab-web.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.esofthead.mycollab.vaadin.web.ui;

import com.vaadin.event.FieldEvents.TextChangeEvent;
import com.vaadin.event.FieldEvents.TextChangeListener;
import com.vaadin.ui.TextField;

/**
 * 
 * @author MyCollab Ltd.
 * @since 4.0
 * 
 */
public class NumberField extends TextField implements TextChangeListener {
    private static final long serialVersionUID = 1L;

    private String lastValue;

    public NumberField() {
        setImmediate(true);
        setTextChangeEventMode(TextChangeEventMode.EAGER);
        addTextChangeListener(this);
    }

    @Override
    public void textChange(TextChangeEvent event) {
        String text = event.getText();
        try {
            new Double(text);
            lastValue = text;
        } catch (NumberFormatException e) {
            setValue(lastValue);
        }
    }
}