org.apache.myfaces.shared_tomahawk.renderkit.html.HtmlImageRendererBase Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of tomahawk21 Show documentation
JSF components and utilities that can be used with any JSF implementation. This library is based on the JSF1.1 version of Tomahawk, but with minor source code and build changes to take advantage of JSF2.1 features. A JSF2.1 implementation is required to use this version of the Tomahawk library.
The newest version!
/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * 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
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.myfaces.shared_tomahawk.renderkit.html;

import java.io.IOException;
import java.util.List;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.faces.application.ProjectStage;
import javax.faces.component.UIComponent;
import javax.faces.component.UIGraphic;
import javax.faces.component.behavior.ClientBehavior;
import javax.faces.component.behavior.ClientBehaviorHolder;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;

import org.apache.myfaces.shared_tomahawk.renderkit.JSFAttr;
import org.apache.myfaces.shared_tomahawk.renderkit.RendererUtils;
import org.apache.myfaces.shared_tomahawk.renderkit.html.util.JavascriptUtils;
import org.apache.myfaces.shared_tomahawk.renderkit.html.util.ResourceUtils;


/**
 * @author Manfred Geiler (latest modification by $Author: lu4242 $)
 * @author Thomas Spiegl
 * @author Anton Koinov
 * @version $Revision: 1349673 $ $Date: 2012-06-13 03:14:15 -0500 (Wed, 13 Jun 2012) $
 */
public class HtmlImageRendererBase
        extends HtmlRenderer
{
    //private static final Log log = LogFactory.getLog(HtmlImageRendererBase.class);
    private static final Logger log = Logger.getLogger(HtmlImageRendererBase.class.getName());
    
    public void decode(FacesContext context, UIComponent component)
    {
        //check for npe
        super.decode(context, component);
        
        HtmlRendererUtils.decodeClientBehaviors(context, component);
    }

    public void encodeEnd(FacesContext facesContext, UIComponent uiComponent)
            throws IOException
    {
        org.apache.myfaces.shared_tomahawk.renderkit.RendererUtils.checkParamValidity(
                facesContext, uiComponent, UIGraphic.class);

        ResponseWriter writer = facesContext.getResponseWriter();
        
        Map> behaviors = null;
        if (uiComponent instanceof ClientBehaviorHolder)
        {
            behaviors = ((ClientBehaviorHolder) uiComponent).getClientBehaviors();
            if (!behaviors.isEmpty())
            {
                ResourceUtils.renderDefaultJsfJsInlineIfNecessary(facesContext, writer);
            }
        }
        
        writer.startElement(HTML.IMG_ELEM, uiComponent);

        if (uiComponent instanceof ClientBehaviorHolder 
                && JavascriptUtils.isJavascriptAllowed(facesContext.getExternalContext())
                && !behaviors.isEmpty())
        {
            HtmlRendererUtils.writeIdAndName(writer, uiComponent, facesContext);
        }
        else
        {
            HtmlRendererUtils.writeIdIfNecessary(writer, uiComponent, facesContext);
        }

        final String url = RendererUtils.getIconSrc(facesContext, uiComponent, JSFAttr.URL_ATTR);
        if (url != null)
        {
            writer.writeURIAttribute(HTML.SRC_ATTR, url,JSFAttr.VALUE_ATTR);
        }
        else
        {
          if (facesContext.isProjectStage(ProjectStage.Development) && log.isLoggable(Level.WARNING))
          {
              log.warning("Component UIGraphic " + uiComponent.getClientId(facesContext) 
                      + " has no attribute url, value, name or attribute resolves to null. Path to component " 
                      + RendererUtils.getPathToComponent(uiComponent));
          }
        }

        /* 
         * Warn the user if the ALT attribute is missing.
         */                
        if (uiComponent.getAttributes().get(HTML.ALT_ATTR) == null) 
        {
            if(facesContext.isProjectStage(ProjectStage.Development) && log.isLoggable(Level.WARNING))
            {
                log.warning("Component UIGraphic " + uiComponent.getClientId(facesContext) 
                        + " has no attribute alt or attribute resolves to null. Path to component " 
                        + RendererUtils.getPathToComponent(uiComponent));
            }
        }

        if (uiComponent instanceof ClientBehaviorHolder && JavascriptUtils.isJavascriptAllowed(
                facesContext.getExternalContext()))
        {
            if (behaviors.isEmpty() && isCommonPropertiesOptimizationEnabled(facesContext))
            {
                CommonPropertyUtils.renderEventProperties(writer, 
                        CommonPropertyUtils.getCommonPropertiesMarked(uiComponent), uiComponent);
            }
            else
            {
                if (isCommonEventsOptimizationEnabled(facesContext))
                {
                    CommonEventUtils.renderBehaviorizedEventHandlers(facesContext, writer, 
                           CommonPropertyUtils.getCommonPropertiesMarked(uiComponent),
                           CommonEventUtils.getCommonEventsMarked(uiComponent), uiComponent, behaviors);
                }
                else
                {
                    HtmlRendererUtils.renderBehaviorizedEventHandlers(facesContext, writer, uiComponent, behaviors);
                }
            }
            if (isCommonPropertiesOptimizationEnabled(facesContext))
            {
                HtmlRendererUtils.renderHTMLAttributes(writer, uiComponent, HTML.IMG_ATTRIBUTES);
                CommonPropertyUtils.renderCommonPassthroughPropertiesWithoutEvents(writer, 
                        CommonPropertyUtils.getCommonPropertiesMarked(uiComponent), uiComponent);
            }
            else
            {
                HtmlRendererUtils.renderHTMLAttributes(writer, uiComponent, 
                        HTML.IMG_PASSTHROUGH_ATTRIBUTES_WITHOUT_EVENTS);
            }
        }
        else
        {
            if (isCommonPropertiesOptimizationEnabled(facesContext))
            {
                HtmlRendererUtils.renderHTMLAttributes(writer, uiComponent, HTML.IMG_ATTRIBUTES);
                CommonPropertyUtils.renderCommonPassthroughProperties(writer, 
                        CommonPropertyUtils.getCommonPropertiesMarked(uiComponent), uiComponent);
            }
            else
            {
                HtmlRendererUtils.renderHTMLAttributes(writer, uiComponent, 
                        HTML.IMG_PASSTHROUGH_ATTRIBUTES);
            }
        }

        writer.endElement(org.apache.myfaces.shared_tomahawk.renderkit.html.HTML.IMG_ELEM);

    }

}