enterprise/web.primefaces/src/org/netbeans/modules/web/primefaces/templates/JsfUtil.ftl

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    regarding copyright ownership.  The ASF licenses this file
    to you under the Apache License, Version 2.0 (the
    "License"); you may not use this file except in compliance
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      http://www.apache.org/licenses/LICENSE-2.0

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    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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<#if comment>

  TEMPLATE DESCRIPTION:

  This is Java template for 'JSF Pages From Entity Beans' PaginationHelper class. Templating
  is performed using FreeMaker (http://freemarker.org/) - see its documentation
  for full syntax. Variables available for templating are:

    packageName - package name (String)
    comment - always (Boolean; always FALSE)

  This template is accessible via top level menu Tools->Templates and can
  be found in category JavaServer Faces->JSF from Entity.

</#if>

package ${packageName};

import java.util.List;
import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;
import javax.faces.model.SelectItem;

public class JsfUtil {

    public static SelectItem[] getSelectItems(List<?> entities, boolean selectOne) {
        int size = selectOne ? entities.size() + 1 : entities.size();
        SelectItem[] items = new SelectItem[size];
        int i = 0;
        if (selectOne) {
            items[0] = new SelectItem("", "---");
            i++;
        }
        for (Object x : entities) {
            items[i++] = new SelectItem(x, x.toString());
        }
        return items;
    }

    public static boolean isValidationFailed() {
        return FacesContext.getCurrentInstance().isValidationFailed();
    }

    public static void addErrorMessage(Exception ex, String defaultMsg) {
        String msg = ex.getLocalizedMessage();
        if (msg != null && msg.length() > 0) {
            addErrorMessage(msg);
        } else {
            addErrorMessage(defaultMsg);
        }
    }
    
    public static void addErrorMessages(List<String> messages) {
        for (String message : messages) {
            addErrorMessage(message);
        }
    }

    public static void addErrorMessage(String msg) {
        FacesMessage facesMsg = new FacesMessage(FacesMessage.SEVERITY_ERROR, msg, msg);
        FacesContext.getCurrentInstance().addMessage(null, facesMsg);
    }

    public static void addSuccessMessage(String msg) {
        FacesMessage facesMsg = new FacesMessage(FacesMessage.SEVERITY_INFO, msg, msg);
        FacesContext.getCurrentInstance().addMessage("successInfo", facesMsg);
    }
    
    public static String getRequestParameter(String key) {
        return FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get(key);
    }
    
    public static Object getObjectFromRequestParameter(String requestParameterName, Converter converter, UIComponent component) {
        String theId = JsfUtil.getRequestParameter(requestParameterName);
        return converter.getAsObject(FacesContext.getCurrentInstance(), component, theId);
    }

    public static enum PersistAction {
        CREATE,
        DELETE,
        UPDATE
    }
}