/*
* 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.photocam;
import java.io.IOException;
import java.util.Map;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import javax.faces.event.PhaseId;
import javax.xml.bind.DatatypeConverter;
import org.primefaces.event.CaptureEvent;
import org.primefaces.expression.SearchExpressionFacade;
import org.primefaces.renderkit.CoreRenderer;
import org.primefaces.util.AgentUtils;
import org.primefaces.util.WidgetBuilder;
public class PhotoCamRenderer extends CoreRenderer {
@Override
public void decode(FacesContext context, UIComponent component) {
PhotoCam cam = (PhotoCam) component;
String clientId = cam.getClientId(context);
Map<String,String> params = context.getExternalContext().getRequestParameterMap();
if(params.containsKey(clientId)) {
String image = params.get(clientId);
image = image.substring(22);
CaptureEvent event = new CaptureEvent(cam, DatatypeConverter.parseBase64Binary(image), image);
event.setPhaseId(PhaseId.INVOKE_APPLICATION);
cam.queueEvent(event);
}
}
@Override
public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
if(!AgentUtils.isIE(context)) {
PhotoCam cam = (PhotoCam) component;
encodeMarkup(context, cam);
encodeScript(context, cam);
}
}
protected void encodeMarkup(FacesContext context, PhotoCam cam) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String clientId = cam.getClientId(context);
writer.startElement("div", null);
writer.writeAttribute("id", clientId, null);
if(cam.getStyle() != null) writer.writeAttribute("style", cam.getStyle(), null);
if(cam.getStyleClass() != null) writer.writeAttribute("class", cam.getStyleClass(), null);
writer.endElement("div");
}
protected void encodeScript(FacesContext context, PhotoCam cam) throws IOException {
String clientId = cam.getClientId(context);
String camera = getResourceRequestPath(context, "photocam/photocam.swf");
WidgetBuilder wb = getWidgetBuilder(context);
wb.initWithDomReady("PhotoCam", cam.resolveWidgetVar(), clientId)
.attr("camera", camera);
if(cam.getUpdate() != null) wb.attr("update", SearchExpressionFacade.resolveComponentsForClient(context, cam, cam.getUpdate()));
if(cam.getProcess() != null) wb.attr("process", SearchExpressionFacade.resolveComponentsForClient(context, cam, cam.getProcess()));
wb.finish();
}
}