Examples of org.thymeleaf.standard.fragment.StandardFragment

org.thymeleaf.standard.fragment.StandardFragment

Object modelling the result of resolving a standard fragment specification, after all its expressions have been evaluated, its parameters parsed, etc.

Note that the specified template can be null, in which case the fragment will be considered to be executed on the current template (obtained from the IProcessingContext argument in {@link #extractFragment(org.thymeleaf.Configuration,org.thymeleaf.context.IProcessingContext,org.thymeleaf.TemplateRepository)}, which will therefore need to be an instance of {@link org.thymeleaf.Arguments}).
@author Daniel Fernández @since 2.1.0

            final Configuration configuration = viewTemplateEngine.getConfiguration();
            final ProcessingContext processingContext = new ProcessingContext(context);


            final String dialectPrefix = getStandardDialectPrefix(configuration);


            final StandardFragment fragment =
                    StandardFragmentProcessor.computeStandardFragmentSpec(
                            configuration, processingContext, viewTemplateName, dialectPrefix, StandardFragmentAttrProcessor.ATTR_NAME);


            if (fragment == null) {
                throw new IllegalArgumentException("Invalid template name specification: '" + viewTemplateName + "'");
            }


            templateName = fragment.getTemplateName();
            nameFragmentSpec = fragment.getFragmentSpec();
            final Map<String,Object> nameFragmentParameters = fragment.getParameters();


            if (nameFragmentParameters != null) {


                if (FragmentSelectionUtils.parameterNamesAreSynthetic(nameFragmentParameters.keySet())) {
                    // We cannot allow synthetic parameters because there is no way to specify them at the template

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            final Configuration configuration = viewTemplateEngine.getConfiguration();
            final ProcessingContext processingContext = new ProcessingContext(context);


            final String dialectPrefix = getStandardDialectPrefix(configuration);


            final StandardFragment fragment =
                    StandardFragmentProcessor.computeStandardFragmentSpec(
                            configuration, processingContext, viewTemplateName, dialectPrefix, StandardFragmentAttrProcessor.ATTR_NAME);


            if (fragment == null) {
                throw new IllegalArgumentException("Invalid template name specification: '" + viewTemplateName + "'");
            }


            templateName = fragment.getTemplateName();
            nameFragmentSpec = fragment.getFragmentSpec();
            final Map<String,Object> nameFragmentParameters = fragment.getParameters();


            if (nameFragmentParameters != null) {


                if (FragmentSelectionUtils.parameterNamesAreSynthetic(nameFragmentParameters.keySet())) {
                    // We cannot allow synthetic parameters because there is no way to specify them at the template

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      throw new IllegalArgumentException("layout:decorator attribute must appear in the root element of your content page");
    }
    Document document = arguments.getDocument();


    // Locate the decorator page
    StandardFragment fragment = StandardFragmentProcessor.computeStandardFragmentSpec(
        arguments.getConfiguration(), arguments, element.getAttributeValue(attributeName),
        DIALECT_PREFIX_LAYOUT, PROCESSOR_NAME_FRAGMENT);
    Template decoratortemplate = arguments.getTemplateRepository().getTemplate(new TemplateProcessingParameters(
        arguments.getConfiguration(), fragment.getTemplateName(), arguments.getContext()));
    element.removeAttribute(attributeName);


    Document decoratordocument = decoratortemplate.getDocument();
    Element decoratorrootelement = decoratordocument.getFirstElementChild();

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   */
  @Override
  protected ProcessorResult processAttribute(Arguments arguments, Element element, String attributeName) {


    // Locate the page and fragment to include
    StandardFragment fragment = StandardFragmentProcessor.computeStandardFragmentSpec(
        arguments.getConfiguration(), arguments, element.getAttributeValue(attributeName),
        DIALECT_PREFIX_LAYOUT, PROCESSOR_NAME_FRAGMENT);
    List<Node> includefragments = fragment.extractFragment(arguments.getConfiguration(),
        arguments, arguments.getTemplateRepository());


    element.removeAttribute(attributeName);


    // Gather all fragment parts within the include element

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   */
  @Override
  protected ProcessorResult processAttribute(Arguments arguments, Element element, String attributeName) {


    // Locate the page and fragment to include
    StandardFragment fragment = StandardFragmentProcessor.computeStandardFragmentSpec(
        arguments.getConfiguration(), arguments, element.getAttributeValue(attributeName),
        DIALECT_PREFIX_LAYOUT, PROCESSOR_NAME_FRAGMENT);
    List<Node> includefragments = fragment.extractFragment(arguments.getConfiguration(),
        arguments, arguments.getTemplateRepository());


    element.removeAttribute(attributeName);


    // Gather all fragment parts within the replace element

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   */
  @Override
  protected ProcessorResult processAttribute(Arguments arguments, Element element, String attributeName) {


    // Locate the page and fragment to include
    StandardFragment fragment = StandardFragmentProcessor.computeStandardFragmentSpec(
        arguments.getConfiguration(), arguments, element.getAttributeValue(attributeName),
        DIALECT_PREFIX_LAYOUT, PROCESSOR_NAME_FRAGMENT);
    List<Node> includefragments = fragment.extractFragment(arguments.getConfiguration(),
        arguments, arguments.getTemplateRepository());


    element.removeAttribute(attributeName);


    // Gather all fragment parts within the substituteby element

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        final String dialectPrefix = Attribute.getPrefixFromAttributeName(attributeName);


        final String fragmentSignatureAttributeName =
                getFragmentSignatureUnprefixedAttributeName(arguments, element, attributeName, attributeValue);


        final StandardFragment fragment =
                StandardFragmentProcessor.computeStandardFragmentSpec(
                        arguments.getConfiguration(), arguments, attributeValue, dialectPrefix, fragmentSignatureAttributeName);


        final List<Node> extractedNodes =
                fragment.extractFragment(arguments.getConfiguration(), arguments, arguments.getTemplateRepository());


        final boolean removeHostNode = getRemoveHostNode(arguments, element, attributeName, attributeValue);


        // If fragment is a whole document (no selection inside), we should never remove its parent node/s
        // Besides, we know that StandardFragmentProcessor.computeStandardFragmentSpec only creates two types of
        // IFragmentSpec objects: WholeFragmentSpec and DOMSelectorFragmentSpec.
        final boolean isWholeDocument = (fragment.getFragmentSpec() instanceof WholeFragmentSpec);


        if (extractedNodes == null || removeHostNode || isWholeDocument) {
            return extractedNodes;
        }

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            // need to ensure engine initialised before getting configuration
            if (!engine.isInitialized()) {
                engine.initialize();
            }
            // allow template fragment syntax to be used e.g. template.html :: area
            final StandardFragment fragment = StandardFragmentProcessor.computeStandardFragmentSpec(
                    engine.getConfiguration(), new ProcessingContext(context), templateScript, null, "th:"
                            + StandardFragmentAttrProcessor.ATTR_NAME);


            // and pass the fragment name and spec then onto the engine
            engine.process(fragment.getTemplateName(), context, fragment.getFragmentSpec(), out);
        }catch(IOException x) {
            throw new RenderException(x);
        }

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