org.primefaces.component.graphicimage.GraphicImageRenderer Maven / Gradle / Ivy
/*
* Copyright 2009-2014 PrimeTek.
*
* Licensed 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.primefaces.component.graphicimage;
import java.io.IOException;
import javax.faces.application.Resource;
import javax.faces.application.ResourceHandler;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.primefaces.application.resource.DynamicContentType;
import org.primefaces.renderkit.CoreRenderer;
import org.primefaces.util.DynamicResourceBuilder;
import org.primefaces.util.HTML;
public class GraphicImageRenderer extends CoreRenderer {
@Override
public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
ResponseWriter writer = context.getResponseWriter();
GraphicImage image = (GraphicImage) component;
String clientId = image.getClientId(context);
String imageSrc;
try {
imageSrc = getImageSrc(context, image);
} catch (Exception ex) {
throw new IOException(ex);
}
writer.startElement("img", image);
writer.writeAttribute("id", clientId, "id");
writer.writeAttribute("src", imageSrc, null);
if(image.getAlt() == null) writer.writeAttribute("alt", "", null);
if(image.getStyleClass() != null) writer.writeAttribute("class", image.getStyleClass(), "styleClass");
renderPassThruAttributes(context, image, HTML.IMG_ATTRS);
writer.endElement("img");
}
protected String getImageSrc(FacesContext context, GraphicImage image) throws Exception {
String name = image.getName();
if (name != null) {
String libName = image.getLibrary();
ResourceHandler handler = context.getApplication().getResourceHandler();
Resource res = handler.createResource(name, libName);
if (res == null) {
return "RES_NOT_FOUND";
}
else {
String requestPath = res.getRequestPath();
return context.getExternalContext().encodeResourceURL(requestPath);
}
}
else {
return DynamicResourceBuilder.build(context, image.getValue(), image, image.isCache(), DynamicContentType.STREAMED_CONTENT, image.isStream());
}
}
}