/*
* 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.imagecompare;
import java.io.IOException;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.primefaces.renderkit.CoreRenderer;
import org.primefaces.util.WidgetBuilder;
public class ImageCompareRenderer extends CoreRenderer {
@Override
public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
ImageCompare compare = (ImageCompare) component;
encodeMarkup(context, compare);
encodeScript(context, compare);
}
protected void encodeScript(FacesContext context, ImageCompare compare) throws IOException {
String clientId = compare.getClientId(context);
WidgetBuilder wb = getWidgetBuilder(context);
wb.init("ImageCompare", compare.resolveWidgetVar(), clientId, "imagecompare")
.attr("handle", getResourceRequestPath(context, "imagecompare/handle.gif"))
.attr("lt", getResourceRequestPath(context, "imagecompare/lt-small.png"))
.attr("rt", getResourceRequestPath(context, "imagecompare/rt-small.png"));
wb.finish();
}
protected void encodeMarkup(FacesContext context, ImageCompare compare) throws IOException {
ResponseWriter writer = context.getResponseWriter();
writer.startElement("div", compare);
writer.writeAttribute("id", compare.getClientId(context), "id");
renderImage(context, compare, "before", compare.getLeftImage());
renderImage(context, compare, "fter", compare.getRightImage());
writer.endElement("div");
}
private void renderImage(FacesContext context, ImageCompare compare, String type, String src) throws IOException {
ResponseWriter writer = context.getResponseWriter();
writer.startElement("div", compare);
writer.startElement("img", null);
writer.writeAttribute("alt", type, null);
writer.writeAttribute("src", getResourceURL(context, src), null);
writer.writeAttribute("width", compare.getWidth(), null);
writer.writeAttribute("height", compare.getHeight(), null);
writer.endElement("img");
writer.endElement("div");
}
}