org.openmrs.web.controller.observation.handler.WebTextHandler.java Source code

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Here is the source code for org.openmrs.web.controller.observation.handler.WebTextHandler.java

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/**
 * This Source Code Form is subject to the terms of the Mozilla Public License,
 * v. 2.0. If a copy of the MPL was not distributed with this file, You can
 * obtain one at http://mozilla.org/MPL/2.0/. OpenMRS is also distributed under
 * the terms of the Healthcare Disclaimer located at http://openmrs.org/license.
 *
 * Copyright (C) OpenMRS Inc. OpenMRS is a registered trademark and the OpenMRS
 * graphic logo is a trademark of OpenMRS Inc.
 */
package org.openmrs.web.controller.observation.handler;

import java.util.Locale;
import java.util.List;
import java.util.ArrayList;
import java.util.Arrays;

import org.springframework.util.Assert;

import org.openmrs.api.context.Context;
import org.openmrs.Obs;
import org.openmrs.obs.ComplexData;
import org.openmrs.obs.ComplexObsHandler;
import org.openmrs.obs.handler.TextHandler;

import org.openmrs.web.controller.observation.handler.WebHandlerUtils;

/**
 * Extends functionality of {@link TextHandler} for web specific views.
 * 
 * @since 1.12
 */
public class WebTextHandler extends TextHandler {

    /** Views supported by this handler */
    private static final String[] supportedViews = { ComplexObsHandler.URI_VIEW, ComplexObsHandler.HTML_VIEW };

    /**
     * Default Constructor
     */
    public WebTextHandler() {
        super();
    }

    /**
     * Returns the ComplexData for an Obs depending on the view.
     * Currently, the views implemented are those supported by ancestor plus the following:
     * <ul>
     * <li>{@link ComplexObsHandler#URI_VIEW}: a lightweight alternative to returning the
     * ComplexData from the parent class since this does not require access to the service layer.
     * Gives a link to the ComplexServlet for this obs
     * </ul>
     * 
     * @see org.openmrs.obs.handler.TextHandler#getObs(Obs, String)
     */
    @Override
    public Obs getObs(Obs obs, String view) {
        if (ComplexObsHandler.URI_VIEW.equals(view)) {
            Locale locale = Context.getLocale();
            ComplexData cd = new ComplexData(obs.getValueAsString(locale),
                    WebHandlerUtils.getHyperlink(obs, ComplexObsHandler.RAW_VIEW));
            obs.setComplexData(cd);
            return obs;
        }

        if (ComplexObsHandler.HTML_VIEW.equals(view)) {
            obs = super.getObs(obs, ComplexObsHandler.TEXT_VIEW);

            ComplexData cd = obs.getComplexData();
            Assert.notNull(cd, "TextHandler failed to provide text complex data");
            Assert.isInstanceOf(String.class, cd.getData(), "TextHandler doesn't provide text as string");

            Locale locale = Context.getLocale();
            cd = new ComplexData(obs.getValueAsString(locale), "<pre>" + cd.getData() + "</pre>");
            obs.setComplexData(cd);
            return obs;
        }

        return super.getObs(obs, view);
    }

    /**
     * @see org.openmrs.obs.ComplexObsHandler#getSupportedViews()
     */
    @Override
    public String[] getSupportedViews() {
        List viewList = new ArrayList(Arrays.asList(supportedViews));
        viewList.addAll(Arrays.asList(super.getSupportedViews()));
        String[] views = new String[viewList.size()];
        viewList.toArray(views);
        return views;
    }

}