I have implemented two StreamedContent beans to dynamic load a graphic image, following the solution found here
1) With the first one I display images in a contentFlow (EVERYTHING OK)
<p:contentFlow value="#{imageBean.images}" var="image">
<p:graphicImage value="#{imageStreamer.fileContent}" styleClass="content" cache="false">
<f:param name="index" value="#{image.index}"/>
</p:graphicImage>
</p:contentFlow>
2) With the second one I try to display images using a foreach (or repeat):
<c:forEach items="#{imageBean.images}" var="item" varStatus="varStatus">
<p:graphicImage value="#{imageStreamer.fileContent}" cache="false">
<f:param name="index" value="#{varStatus.index}" />
</p:graphicImage>
</c:forEach>
This doesn't work. The check (context.getCurrentPhaseId() == PhaseId.RENDER_RESPONSE) is always true.
If I change the scope of the Bean to RequestScoped than it works! I'm confused... can someone help me?
Managed bean:
@ManagedBean
@ApplicationScoped
public class ImageStreamer{
public ImageStreamer(){}
public StreamedContent getFileContent(){
List<Link> links = this.getLinkItems();
ExternalContext externalContext = FacesContext.getCurrentInstance().getExternalContext();
FacesContext fc = FacesContext.getCurrentInstance();
String linkIndex = externalContext.getRequestParameterMap().get("index");
if(fc.getCurrentPhaseId() == PhaseId.RENDER_RESPONSE){
return new DefaultStreamedContent();
}else{
int parsedIndex = Integer.parseInt(linkIndex);
Link ql = links.get(parsedIndex);
return new DefaultStreamedContent(new ByteArrayInputStream(ql.getBytes()), "image/png");
}
}
}
