Examples of javax.faces.application.StateManager

javax.faces.application.StateManager

StateManager directs the process of saving and restoring the view between requests. The {@link StateManager}instance for an application is retrieved from the {@link Application}instance, and thus cannot know any details of the markup language created by the {@link RenderKit} being used to render a view. The{@link StateManager} utilizes a helper object ({@link ResponseStateManager}), that is provided by the {@link RenderKit}implementation and is therefore aware of the markup language details.


    if (log.isDebugEnabled()) {
      log.debug("Try to restore tree structure ......");
    }


    StateManager stateManager = context.getApplication().getStateManager();
    
    Map sessionMap = context.getExternalContext().getSessionMap();
    Map requestMap = context.getExternalContext().getRequestParameterMap();
  
    if(log.isDebugEnabled()){
      if(requestMap.containsKey(KitConstants.XFBRIDGE_REQUEST)){
        log.debug("AJAX request detected (from XULFACES_BRIDGE)");              
      }  
    }


    String viewString = (String) requestMap.get(javax.faces.render.ResponseStateManager.VIEW_STATE_PARAM);    
    
    if (log.isDebugEnabled()) {
      log.debug("ViewString is " + viewString);  
    }            
    
    Object structure = null;
    
    if (viewString == null) {
      return null;
    }


    if (stateManager.isSavingStateInClient(context)) {
      
      viewStateData.set(null);
      
      if (log.isDebugEnabled()) {
        log.debug("State was on client");

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    ResponseWriter writer = facesContext.getResponseWriter();
    
    writer.write("<state>");
    writer.startCDATA();
    
    StateManager stateManager = facesContext.getApplication().getStateManager();
    stateManager.writeState(facesContext, stateManager.saveView(facesContext));
    
    writer.endCDATA();
    writer.write("</state>");
  }

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    writer.write("</row-count>");
    
    //State
    writer.write("<state>");
    writer.startCDATA();
      StateManager stateManager = facesContext.getApplication().getStateManager();
      stateManager.writeState(facesContext, stateManager.saveView(facesContext));
    writer.endCDATA();
    writer.write("</state>");


    writer.write("</data-response>");
  }

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      //State
      writer.write("<state>");
      writer.startCDATA();
      
      StateManager stateManager = facesContext.getApplication().getStateManager();
      stateManager.writeState(facesContext, stateManager.saveView(facesContext));
      
      writer.endCDATA();
      writer.write("</state>");
      
      writer.write("</partial-response>");

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      //State
      writer.write("<state>");
      writer.startCDATA();
      
      StateManager stateManager = facesContext.getApplication().getStateManager();
      stateManager.writeState(facesContext, stateManager.saveView(facesContext));
      
      writer.endCDATA();
      writer.write("</state>");
      
      writer.write("</partial-response>");

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      writer.write(stepToDisplay);
      writer.write("</current-step>");
      
      writer.write("<state>");
      writer.startCDATA();
      StateManager stateManager = facesContext.getApplication().getStateManager();
      stateManager.writeState(facesContext, stateManager.saveView(facesContext));
      writer.endCDATA();
      writer.write("</state>");
      
    writer.write("</wizard-response>");
  }

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            // is actually written into the output, but this cannot
            // programatically be discovered
            stateWriter.writingState();
        }


        StateManager stateManager = context.getApplication().getStateManager();
        if (stateManager.isSavingStateInClient(context))
        {
            // Only write state marker if javascript view state is disabled
            ExternalContext extContext = context.getExternalContext();
            if (!(JavascriptUtils.isJavascriptAllowed(extContext) && MyfacesConfig.getCurrentInstance(extContext).isViewStateJavascript())) {
                context.getResponseWriter().write(FORM_STATE_MARKER);
            }
        }
        else
        {
            stateManager.writeState(context, new Object[2]);
        }
    }

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        }


        ResponseWriter oldResponseWriter = responseWriter;
        StateMarkerAwareWriter stateAwareWriter = null;


        StateManager stateManager = facesContext.getApplication().getStateManager();
        if (stateManager.isSavingStateInClient(facesContext))
        {
            stateAwareWriter = new StateMarkerAwareWriter();


            // Create a new response-writer using as an underlying writer the stateAwareWriter
            // Effectively, all output will be buffered in the stateAwareWriter so that later
            // this writer can replace the state-markers with the actual state.
            responseWriter = hookInStateAwareWriter(
                    oldResponseWriter, stateAwareWriter, renderKit, externalContext);
            facesContext.setResponseWriter(responseWriter);
        }


        actuallyRenderView(facesContext, viewToRender);


        facesContext.setResponseWriter(oldResponseWriter);


        //We're done with the document - now we can write all content
        //to the response, properly replacing the state-markers on the way out
        //by using the stateAwareWriter
        if (stateManager.isSavingStateInClient(facesContext))
        {
            stateAwareWriter.flushToWriter(response.getWriter());
        }
        else
        {
            stateManager.saveView(facesContext);
        }


        // Final step - we output any content in the wrappedResponse response from above to the response,
        // removing the wrappedResponse response from the request, we don't need it anymore
        ServletViewResponseWrapper afterViewTagResponse = (ServletViewResponseWrapper) externalContext.getRequestMap().get(

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     * @throws IOException
     */
    @Override
    public void writeState(FacesContext facesContext) throws IOException
    {
        StateManager stateManager = facesContext.getApplication().getStateManager();
        if (stateManager.isSavingStateInClient(facesContext))
        {
        // Only write state marker if javascript view state is disabled
        ExternalContext extContext = facesContext.getExternalContext();
        if (!(JavascriptUtils.isJavascriptAllowed(extContext) && MyfacesConfig.getCurrentInstance(extContext).isViewStateJavascript())) {
            facesContext.getResponseWriter().write(FORM_STATE_MARKER);
        }
        }
        else
        {
            stateManager.writeState(facesContext, new Object[2]);
        }
    }

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        }


        public void flushToWriter(Writer writer) throws IOException
        {
            FacesContext facesContext = FacesContext.getCurrentInstance();
            StateManager stateManager = facesContext.getApplication().getStateManager();


            StringWriter stateWriter = new StringWriter();
            ResponseWriter realWriter = facesContext.getResponseWriter();
            facesContext.setResponseWriter(realWriter.cloneWithWriter(stateWriter));


            Object serializedView = stateManager.saveView(facesContext);


            stateManager.writeState(facesContext, serializedView);
            facesContext.setResponseWriter(realWriter);


            StringBuilder contentBuffer = getStringBuilder();
            String state = stateWriter.getBuffer().toString();

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Related Classes of javax.faces.application.StateManager

com.sun.facelets.FaceletViewHandler

com.sun.faces.application.TestApplicationImpl

com.sun.faces.application.TestApplicationImpl_Config

com.sun.faces.application.TestHAStateManagerImpl

com.sun.faces.application.TestViewHandlerImpl

com.sun.faces.application.view.FaceletViewHandlingStrategy

com.sun.faces.application.view.WriteBehindStateWriter

com.sun.faces.application.ViewHandlerImpl$WriteBehindStateWriter

com.sun.faces.renderkit.ResponseStateManagerImpl

com.sun.faces.systest.render.CustomResponseStateManagerImpl

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