Examples of com.volantis.mcs.context.MarinerPageContext

com.volantis.mcs.context.MarinerPageContext
Provides methods and instance variables that are applicable to the page associated with the current request. Every requested page will generate a new MarinerPageContext object.

The top level (first) canvas with the request will initialise the top level stacks and global objects such as the styling engine within the MarinerPageContext.

An included canvas will push its status onto the various stacks held within the MarinerPageContext and remove those from the stack on completion of that canvases rendering.

If this page is being rendered inside a region then the DeviceLayoutContext is added to the RegionInstance of the including region instead of being released here.
An outOfContextInclusion is a page which was created in either a servlet, or a JSP page but which was not initialised by a canvas and so limits the information which can be inherited

Refactoring

This class has grown quite substantially since it was first created and has reached the point where it is becoming quite unmanageable. It has 2 distinct but related uses. As the internal request context, and the canvas context. It would be better if this was split into a couple of different related classes each of which is geared towards the different use made of it. This would have significant savings in terms of wasted space.
Obviously refactoring can introduce bugs so it must be done with great care and even greater understanding of the uses made of it as it will have a wide impact on the code. @mock.generate

  // Javadoc inherited from super class.
  public int elementStart (MarinerRequestContext context,
                           PAPIAttributes papiAttributes)
    throws PAPIException {


    MarinerPageContext pageContext
      = ContextInternals.getMarinerPageContext (context);


    VolantisProtocol protocol = pageContext.getProtocol ();
    protocol.pushHeadBuffer ();


    // Make sure that the attributes are of the correct type.
    PickleHeadAttributes attributes = (PickleHeadAttributes) papiAttributes;

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    // Make sure that the attributes are of the correct type.
    PickleHeadAttributes attributes = (PickleHeadAttributes) papiAttributes;
    
    super.elementEnd (context, papiAttributes);


    MarinerPageContext pageContext
      = ContextInternals.getMarinerPageContext (context);


    VolantisProtocol protocol = pageContext.getProtocol ();
    protocol.popHeadBuffer ();


    return CONTINUE_PROCESSING;
  }

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    public void process(Object content, XDIMEContextInternal context,
                        String id, String propertyName) throws XDIMEException {


        super.process(content, context, id, propertyName);


        MarinerPageContext ctx = ContextInternals.getMarinerPageContext(
            context.getInitialRequestContext());


        MetaData metaData = context.getPageMetaData();
        MetaAttributes attributes = new MetaAttributes();


        //add all search engine meta tags i.e. description, keywords, author        
        if(MetaPropertyHandlerFactory.DESCRIPTION.equals(propertyName)
                &&  DevicePolicyConstants.FULL_SUPPORT_POLICY_VALUE
                .equals(ctx.getDevicePolicyValue(DevicePolicyConstants.X_ELEMENT_SUPPORTS_META_DESCRIPTION))) {


            attributes.setName(MetaPropertyHandlerFactory.DESCRIPTION);
            attributes.setContent((String) metaData.getPropertyValue(MetaPropertyHandlerFactory.DESCRIPTION));
            ctx.getProtocol().writeMeta(attributes);            
        }    


        if(MetaPropertyHandlerFactory.KEYWORDS.equals(propertyName)
                &&  DevicePolicyConstants.FULL_SUPPORT_POLICY_VALUE
                .equals(ctx.getDevicePolicyValue(DevicePolicyConstants.X_ELEMENT_SUPPORTS_META_KEYWORDS))) {


            attributes.setName(MetaPropertyHandlerFactory.KEYWORDS);
            String value = null;
            if(metaData.getPropertyValue(MetaPropertyHandlerFactory.KEYWORDS) != null) {
                value = normalize((String) metaData.getPropertyValue(MetaPropertyHandlerFactory.KEYWORDS));
            }
            attributes.setContent(value);
            ctx.getProtocol().writeMeta(attributes);
        }            


        if(MetaPropertyHandlerFactory.AUTHOR.equals(propertyName)
                &&  DevicePolicyConstants.FULL_SUPPORT_POLICY_VALUE
                .equals(ctx.getDevicePolicyValue(DevicePolicyConstants.X_ELEMENT_SUPPORTS_META_AUTHOR))) {
            
            attributes.setName(AUTHOR_HTML_META);
            attributes.setContent((String) metaData.getPropertyValue(MetaPropertyHandlerFactory.AUTHOR));
            ctx.getProtocol().writeMeta(attributes);
        }
    }

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            // As the first stage of this we deal with any per-project default
            // themes and layouts. These need to be set up before we get any
            // per-page versions.


            // Get the current project.
            MarinerPageContext pageContext = getPageContext(context);
            final RuntimeProject runtimeProject = (RuntimeProject)
                    pageContext.getCurrentProject();


            if (runtimeProject != null) {
                // Add any project specified style sheets into the list of
                // theme style sheets. These must be added before any style
                // sheets that are specified in the head.

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     * @param runtimeProject
     */
    private void addProjectStyleSheets(XDIMEContextInternal context,
            RuntimeProject runtimeProject) {


        MarinerPageContext pageContext = getPageContext(context);


        // Find any theme style sheets which are specified in the project,
        // compile them and add them to the collection of compiled theme style
        // sheets.
        List projectThemeLocations =
                runtimeProject.getProjectThemesLocations();
        if (projectThemeLocations != null) {
            for (Iterator themeLocations = projectThemeLocations.iterator();
                 themeLocations.hasNext();) {
                String projectThemeLocation = (String) themeLocations.next();
                if (projectThemeLocation != null) {
                    if (logger.isDebugEnabled()) {
                        logger.debug("Project theme: " + projectThemeLocation);
                    }
                    CompiledStyleSheet projectStyleSheet =
                            pageContext.retrieveThemeStyleSheet(
                                    projectThemeLocation);
                    if (projectStyleSheet != null) {
                        themeStyleSheets.addStyleSheet(projectStyleSheet);
                    }
                }

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  // Javadoc inherited from super class.
  public int elementStart (MarinerRequestContext context,
                           PAPIAttributes papiAttributes)
    throws PAPIException {


    MarinerPageContext pageContext
      = ContextInternals.getMarinerPageContext (context);


      if (pageContext.insideXDIMECPElement()) {
          throw new PAPIException(EXCEPTION_LOCALIZER.format(
                  "element-not-allowed-inside-xdimecp", papiAttributes.getElementName()));
      }


    PickleAttributes attributes = (PickleAttributes) papiAttributes;


    pattributes.setElementName (attributes.getElementName ());
    pattributes.setAttributes (attributes.getAttributes ());
    
    VolantisProtocol protocol = pageContext.getProtocol ();
    protocol.writeOpenElement (pattributes);


    // Push this element.
    pageContext.pushElement (this);
    
    return PROCESS_ELEMENT_BODY;
  }

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  // Javadoc inherited from super class.
  public int elementEnd (MarinerRequestContext context,
                         PAPIAttributes papiAttributes)
    throws PAPIException {
    
    MarinerPageContext pageContext
      = ContextInternals.getMarinerPageContext (context);


    PickleAttributes attributes = (PickleAttributes) papiAttributes;
    
    // Pop this element.
    pageContext.popElement (this);


    VolantisProtocol protocol = pageContext.getProtocol ();
    protocol.writeCloseElement (pattributes);
    
    return CONTINUE_PROCESSING;
  }

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    // javadoc inherited
    public void process(Object content, XDIMEContextInternal context,
                        String id, String propertyName) throws XDIMEException {
        super.process(content, context, id, propertyName);
        MarinerPageContext ctx = ContextInternals.getMarinerPageContext(
            context.getInitialRequestContext());
        TimedRefreshInfo tri = (TimedRefreshInfo) content;
        if (null != tri) {
            try {
                ctx.getProtocol().writeTimedRefresh(tri);
            } catch (ProtocolException e) {
                throw new XDIMEException(e);
            }
        }
    }

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    public void render(final FormatRendererContext context, final FormatInstance instance)
            throws RendererException {


        if (context.isFragmentationSupported()) {
            if (!instance.isEmpty()) {
                final MarinerPageContext pageContext =
                    context.getDeviceLayoutContext().getMarinerPageContext();
                final ResponseCachingDirectives cachingDirectives =
                    pageContext.getEnvironmentContext().getCachingDirectives();
                // caching is not supported for fragmented forms
                if (cachingDirectives != null) {
                    cachingDirectives.disable();
                }

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                    factory.createExtractor(configuration, extractorContext);
            StyleSheet styleSheet = extractor.extract(document);


            StringWriter cssStringWriter = new StringWriter();
            StyleSheetRenderer renderer = getStyleSheetRenderer();
            MarinerPageContext marinerPageContext = getMarinerPageContext();


            // todo better detect empty style sheet here and avoid rendering,
            // and also remove dubious check for empty in renderStyleSheet?
            MarinerRequestContext requestContext =
                marinerPageContext.getRequestContext();
            com.volantis.mcs.css.renderer.RendererContext runtimeCSSRendererContext =
                    new RuntimeRendererContext(cssStringWriter,
                            renderer, this,
                            getProtocolConfiguration().getCssVersion());
            renderer.renderStyleSheet(styleSheet,

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Examples of com.volantis.mcs.context.MarinerPageContext

Refactoring

Related Classes of com.volantis.mcs.context.MarinerPageContext