org.obiba.onyx.quartz.editor.behavior.VariableNameBehavior.java Source code

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Here is the source code for org.obiba.onyx.quartz.editor.behavior.VariableNameBehavior.java

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/*******************************************************************************
 * Copyright 2008(c) The OBiBa Consortium. All rights reserved.
 * 
 * This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/
package org.obiba.onyx.quartz.editor.behavior;

import org.apache.commons.lang.StringUtils;
import org.apache.wicket.AttributeModifier;
import org.apache.wicket.Component;
import org.apache.wicket.ajax.AjaxEventBehavior;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.form.OnChangeAjaxBehavior;
import org.apache.wicket.behavior.AbstractBehavior;
import org.apache.wicket.markup.html.IHeaderResponse;
import org.apache.wicket.markup.html.form.TextField;
import org.apache.wicket.markup.html.resources.CompressedResourceReference;
import org.apache.wicket.model.Model;
import org.obiba.onyx.quartz.core.engine.questionnaire.question.Category;
import org.obiba.onyx.quartz.core.engine.questionnaire.question.Question;

/**
 *
 */
@SuppressWarnings("serial")
public class VariableNameBehavior extends AbstractBehavior {

    private boolean variableNameDefined;

    public VariableNameBehavior(final TextField<String> name, final TextField<String> variable,
            final Question parentQuestion, final Question question, final Category category) {

        variableNameDefined = StringUtils.isNotBlank(variable.getModelObject());

        if (!variableNameDefined) {

            variable.setOutputMarkupId(true);

            variable.setModelObject(
                    generateVariableName(parentQuestion, question, category, name.getModelObject()));
            variable.add(new AttributeModifier("class", true, new Model<String>("autoDefined")));
            final AjaxEventBehavior updateVariableNameBehavior = new OnChangeAjaxBehavior() {

                @Override
                protected void onUpdate(AjaxRequestTarget target) {
                    if (!variableNameDefined) {
                        variable.setModelObject(
                                generateVariableName(parentQuestion, question, category, name.getModelObject()));
                        target.addComponent(variable);
                    }
                }
            };
            name.add(updateVariableNameBehavior);

            variable.add(new AjaxEventBehavior("onclick") {
                @Override
                protected void onEvent(AjaxRequestTarget target) {
                    variable.setModelObject("");
                    variable.add(new AttributeModifier("class", true, new Model<String>("userDefined")));
                    variableNameDefined = true;
                    target.addComponent(variable);
                }

                @Override
                public boolean isEnabled(Component component) {
                    return !variableNameDefined;
                }
            });

        }

    }

    @Override
    public void renderHead(IHeaderResponse response) {
        super.renderHead(response);
        response.renderCSSReference(
                new CompressedResourceReference(VariableNameBehavior.class, "VariableNameBehavior.css"));
    }

    public boolean isVariableNameDefined() {
        return variableNameDefined;
    }

    protected String generateVariableName(Question parentQuestion, Question question, Category category,
            String name) {
        if (StringUtils.isBlank(name))
            return "";
        String variableName = (parentQuestion == null ? "" : parentQuestion.getName() + ".");
        if (question != null) {
            variableName += question.getName() + ".";
            if (category != null) {
                variableName += category.getName() + ".";
            }
        }
        return variableName + StringUtils.trimToEmpty(name);
    }
}