org.openmrs.module.htmlwidgets.web.handler.EnumHandler.java Source code

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Here is the source code for org.openmrs.module.htmlwidgets.web.handler.EnumHandler.java

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/**
 * The contents of this file are subject to the OpenMRS Public License
 * Version 1.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://license.openmrs.org
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * License for the specific language governing rights and limitations
 * under the License.
 *
 * Copyright (C) OpenMRS, LLC.  All Rights Reserved.
 */
package org.openmrs.module.htmlwidgets.web.handler;

import org.apache.commons.lang.StringUtils;
import org.openmrs.annotation.Handler;
import org.openmrs.module.htmlwidgets.web.WidgetConfig;
import org.openmrs.module.htmlwidgets.web.html.CodedWidget;
import org.openmrs.module.htmlwidgets.web.html.Option;

/**
 * FieldGenHandler for Enumerated Types
 */
@Handler(supports = { Enum.class }, order = 50)
public class EnumHandler extends CodedHandler {

    /** 
     * @see CodedHandler#populateOptions(WidgetConfig, CodedWidget)
     */
    @Override
    public void populateOptions(WidgetConfig config, CodedWidget widget) {
        Class<?> c = config.getType();
        Object[] enums = c.getEnumConstants();
        if (enums != null) {
            for (Object o : enums) {
                widget.addOption(new Option(o.toString(), o.toString(), null, o), config);
            }
        }
    }

    /** 
     * @see WidgetHandler#parse(String, Class<?>)
     */
    @Override
    public Object parse(String input, Class<?> type) {
        if (StringUtils.isNotBlank(input)) {
            Object[] enums = type.getEnumConstants();
            if (enums != null) {
                for (Object o : enums) {
                    if (input.equals(o.toString())) {
                        return o;
                    }
                }
            }
        }
        return null;
    }
}