org.metawidget.vaadin.ui.widgetbuilder.LookupLabel.java Source code

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Here is the source code for org.metawidget.vaadin.ui.widgetbuilder.LookupLabel.java

Source

// Metawidget
//
// This file is dual licensed under both the LGPL
// (http://www.gnu.org/licenses/lgpl-2.1.html) and the EPL
// (http://www.eclipse.org/org/documents/epl-v10.php). As a
// recipient of Metawidget, you may choose to receive it under either
// the LGPL or the EPL.
//
// Commercial licenses are also available. See http://metawidget.org
// for details.

package org.metawidget.vaadin.ui.widgetbuilder;

import java.util.Map;

/**
 * Label whose values display using a lookup.
 * 
 * @author <a href="http://kennardconsulting.com">Richard Kennard</a>
 */

public class LookupLabel extends com.vaadin.ui.Label {

    //
    // Private members
    //

    private Map<String, String> mLookup;

    //
    // Constructor
    //

    public LookupLabel(Map<String, String> lookup) {

        if (lookup == null) {
            throw new NullPointerException("lookup");
        }

        mLookup = lookup;
    }

    //
    // Public methods
    //

    /**
     * Overridden to get the value using our lookup.
     */

    @Override
    public String getValue() {

        String value = (String) super.getValue();
        String lookup = mLookup.get(value);

        if (lookup != null) {
            return lookup;
        }

        return value;
    }
}