RequestPhaseListener.java

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package ajaxrequest;

import java.util.Iterator;

import javax.faces.component.UIComponent;
import javax.faces.component.UIForm;
import javax.faces.context.FacesContext;
import javax.faces.event.PhaseEvent;
import javax.faces.event.PhaseId;
import javax.faces.event.PhaseListener;

/**
 * This <code>PhaseListener</code> executes before Apply Request Values 
 * Phase of the request processing lifecycle.  
 */
public class RequestPhaseListener implements PhaseListener {


    public RequestPhaseListener() {
    }

    public void afterPhase(PhaseEvent event) {
    }

    public void beforePhase(PhaseEvent event) {
        FacesContext context = event.getFacesContext();
        if (context.getPartialViewContext().getExecuteIds().isEmpty()) {
            context.getPartialViewContext().getExecuteIds().add("ajax10");
        }
        if (context.getPartialViewContext().getRenderIds().isEmpty()) {
            context.getPartialViewContext().getRenderIds().add("form");
            UIForm form = (UIForm)context.getViewRoot().findComponent("form");
            if (form != null) {
                UIComponent component = form.findComponent("_0");
                setInitialRender(component);
            }
        }
        if (context.getPartialViewContext().isExecuteAll() &&
            context.getPartialViewContext().getRenderIds().isEmpty()) {
            context.getPartialViewContext().getRenderIds().add("form");
            UIForm form = (UIForm)context.getViewRoot().findComponent("form");
            if (form != null) {
                UIComponent component = form.findComponent("_0");
                setExecuteNoRender(component);
            }
        }

    }

    public PhaseId getPhaseId() {
        return PhaseId.APPLY_REQUEST_VALUES;
    }

    private void setExecuteNoRender(UIComponent component) {
        Iterator<UIComponent> kids = component.getChildren().iterator();
        while (kids.hasNext()) {
            UIComponent kid = kids.next();
            setExecuteNoRender(kid);
        }
        component.getAttributes().put("styleClass", "execute-norender");
    }

    private void setInitialRender(UIComponent component) {
        Iterator<UIComponent> kids = component.getChildren().iterator();
        while (kids.hasNext()) {
            UIComponent kid = kids.next();
            setInitialRender(kid);
        }
        if (component.getAttributes().get("styleClass") != null) {
            component.getAttributes().remove("styleClass");
        }
    }

}