de.bund.bfr.knime.ui.StringTextField.java Source code

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Here is the source code for de.bund.bfr.knime.ui.StringTextField.java

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/*******************************************************************************
 * Copyright (c) 2016 German Federal Institute for Risk Assessment (BfR)
 *
 * This program 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.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Contributors:
 *     Department Biological Safety - BfR
 *******************************************************************************/
package de.bund.bfr.knime.ui;

import com.google.common.base.Strings;

public class StringTextField extends TypedTextField {

    private static final long serialVersionUID = 1L;

    private String value;

    public StringTextField(boolean optional, int columns) {
        super(optional, columns);
        textChanged();
    }

    @Override
    public String getValue() {
        return value;
    }

    public void setValue(String value) {
        setTextWithoutListener(Strings.nullToEmpty(value));
        textChanged();
    }

    @Override
    protected void textChanged() {
        value = Strings.emptyToNull(getText().trim());
        valueValid = value != null || isOptional();
        super.textChanged();
    }
}