FormEnumListBox.java

/*
 * Copyright 2014-2015 CyberVision, Inc.
 *
 * 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 org.kaaproject.avro.ui.gwt.client.widget;

import java.io.IOException;

import org.kaaproject.avro.ui.gwt.client.AvroUiResources.AvroUiStyle;
import org.kaaproject.avro.ui.shared.FormEnum;

import com.google.gwt.text.shared.Renderer;

public class FormEnumListBox extends ExtendedValueListBox<FormEnum> {

    public FormEnumListBox(AvroUiStyle style, String promptText) {
        super(new FormEnumRenderer(), style, promptText);
    }

    static class FormEnumRenderer implements Renderer<FormEnum> {

        @Override
        public String render(FormEnum object) {
            return object != null ? object.getDisplayValue() : "";
        }

        @Override
        public void render(FormEnum object, Appendable appendable)
                throws IOException {
            appendable.append(render(object));
        }
    }
}