package com.mandi.springmvc;
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import java.io.IOException;
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import java.util.Iterator;
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import java.util.Map;
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import javax.faces.FacesException;
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import javax.faces.FactoryFinder;
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import javax.faces.application.ViewHandler;
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import javax.faces.component.UIViewRoot;
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import javax.faces.context.FacesContext;
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import javax.faces.context.FacesContextFactory;
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import javax.faces.event.PhaseEvent;
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import javax.faces.event.PhaseId;
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import javax.faces.event.PhaseListener;
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import javax.faces.lifecycle.Lifecycle;
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import javax.faces.lifecycle.LifecycleFactory;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import org.springframework.web.servlet.support.RequestContextUtils;
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import org.springframework.web.servlet.view.AbstractUrlBasedView;
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public class FaceletView extends AbstractUrlBasedView {
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private Lifecycle facesLifecycle;
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@Override
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public void afterPropertiesSet() throws Exception {
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super.afterPropertiesSet();
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facesLifecycle = createFacesLifecycle();
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}
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@Override
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protected void renderMergedOutputModel(Map<String, Object> model,
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HttpServletRequest request, HttpServletResponse response) throws Exception {
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logger.info("View rendering start");
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FacesContext facesContext = createFacesContext(request, response);
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populateRequestMap(facesContext, model);
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FaceletView.notifyBeforeListeners(PhaseId.RESTORE_VIEW, facesLifecycle, facesContext);
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ViewHandler viewHandler = facesContext.getApplication().getViewHandler();
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viewHandler.initView(facesContext);
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UIViewRoot viewRoot = viewHandler.createView(facesContext, getUrl());
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viewRoot.setLocale(RequestContextUtils.getLocale(request));
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viewRoot.setTransient(true);
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facesContext.setViewRoot(viewRoot);
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FaceletView.notifyAfterListeners(PhaseId.RESTORE_VIEW, facesLifecycle, facesContext);
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facesContext.setViewRoot(viewRoot);
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facesContext.renderResponse();
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try {
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FaceletView.notifyBeforeListeners(PhaseId.RENDER_RESPONSE, facesLifecycle, facesContext);
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logger.debug("Asking view handler to render view");
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facesContext.getApplication().getViewHandler().renderView(facesContext, viewRoot);
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FaceletView.notifyAfterListeners(PhaseId.RENDER_RESPONSE, facesLifecycle, facesContext);
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}
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catch (IOException e) {
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logger.error("An I/O error occurred during view rendering");
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throw new FacesException("An I/O error occurred during view rendering", e);
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} finally {
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logger.info("View rendering complete");
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facesContext.responseComplete();
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facesContext.release();
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}
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}
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@SuppressWarnings("rawtypes")
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private void populateRequestMap(FacesContext facesContext, Map model) {
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Iterator i = model.keySet().iterator();
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while (i.hasNext()) {
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String key = i.next().toString();
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facesContext.getExternalContext().getRequestMap().put(key, model.get(key));
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}
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}
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private FacesContext createFacesContext(HttpServletRequest request, HttpServletResponse response) {
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FacesContextFactory facesContextFactory = (FacesContextFactory) FactoryFinder.getFactory(FactoryFinder.FACES_CONTEXT_FACTORY);
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return facesContextFactory.getFacesContext(getServletContext(), request, response, facesLifecycle);
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}
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private Lifecycle createFacesLifecycle() {
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LifecycleFactory lifecycleFactory = (LifecycleFactory) FactoryFinder.getFactory(FactoryFinder.LIFECYCLE_FACTORY);
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return lifecycleFactory.getLifecycle(LifecycleFactory.DEFAULT_LIFECYCLE);
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}
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public static void notifyAfterListeners(PhaseId phaseId,
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Lifecycle lifecycle, FacesContext context) {
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PhaseEvent afterPhaseEvent = new PhaseEvent(context, phaseId, lifecycle);
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for (int i = 0; i < lifecycle.getPhaseListeners().length; i++) {
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PhaseListener listener = lifecycle.getPhaseListeners()[i];
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if (listener.getPhaseId() == phaseId
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|| listener.getPhaseId() == PhaseId.ANY_PHASE) {
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listener.afterPhase(afterPhaseEvent);
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}
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}
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}
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public static void notifyBeforeListeners(PhaseId phaseId,
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Lifecycle lifecycle, FacesContext context) {
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PhaseEvent beforePhaseEvent = new PhaseEvent(context, phaseId,
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lifecycle);
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for (int i = 0; i < lifecycle.getPhaseListeners().length; i++) {
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PhaseListener listener = lifecycle.getPhaseListeners()[i];
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if (listener.getPhaseId() == phaseId
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|| listener.getPhaseId() == PhaseId.ANY_PHASE) {
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listener.beforePhase(beforePhaseEvent);
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}
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}
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}
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}
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