org.openmrs.module.htmlformentry19ext.ProviderWidget.java Source code

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Here is the source code for org.openmrs.module.htmlformentry19ext.ProviderWidget.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.htmlformentry19ext;

import java.util.Collections;
import java.util.Comparator;
import java.util.List;

import javax.servlet.http.HttpServletRequest;

import org.openmrs.Provider;
import org.openmrs.api.context.Context;
import org.openmrs.module.htmlformentry.FormEntryContext;
import org.openmrs.module.htmlformentry.FormEntryContext.Mode;
import org.openmrs.module.htmlformentry.widget.Widget;
import org.openmrs.module.htmlformentry.widget.WidgetFactory;
import org.openmrs.module.htmlformentry19ext.util.ProviderByPersonNameComparator;
import org.springframework.util.StringUtils;

/**
 * Widget that lets you choose a {@link Provider} from a dropdown
 */
public class ProviderWidget implements Widget {

    private Provider initialValue;

    /**
     * @see org.openmrs.module.htmlformentry.widget.Widget#setInitialValue(java.lang.Object)
     */
    @Override
    public void setInitialValue(Object initialValue) {
        this.initialValue = (Provider) initialValue;
    }

    /**
     * @see org.openmrs.module.htmlformentry.widget.Widget#generateHtml(org.openmrs.module.htmlformentry.FormEntryContext)
     */
    @Override
    public String generateHtml(FormEntryContext context) {
        if (context.getMode() == Mode.VIEW) {
            if (initialValue != null)
                return WidgetFactory.displayValue(initialValue.getName());
            else
                return "";
        }

        List<Provider> providers = Context.getProviderService().getAllProviders(true);
        Collections.sort(providers, new ProviderByPersonNameComparator());

        StringBuilder sb = new StringBuilder();
        sb.append("<select name=\"" + context.getFieldName(this) + "\">");
        sb.append("\n<option value=\"\">");
        sb.append(Context.getMessageSourceService().getMessage("htmlformentry19ext.chooseAProvider"));
        sb.append("</option>");

        for (Provider provider : providers) {
            sb.append("\n<option ");
            if (initialValue != null && initialValue.equals(provider))
                sb.append("selected=\"true\" ");
            sb.append("value=\"" + provider.getId() + "\">").append(provider.getName()).append("</option>");
        }
        sb.append("</select>");
        return sb.toString();
    }

    /**
     * @see org.openmrs.module.htmlformentry.widget.Widget#getValue(org.openmrs.module.htmlformentry.FormEntryContext, javax.servlet.http.HttpServletRequest)
     */
    @Override
    public Object getValue(FormEntryContext context, HttpServletRequest request) {
        String val = request.getParameter(context.getFieldName(this));
        if (StringUtils.hasText(val)) {
            return Context.getProviderService().getProvider(Integer.valueOf(val));
        }
        return null;
    }

}