Examples of MarkupStream

org.apache.wicket.markup.MarkupStream
A stream of {@link org.apache.wicket.markup.MarkupElement}s, subclasses of which are {@link org.apache.wicket.markup.ComponentTag} and {@link org.apache.wicket.markup.RawMarkup}. A markup stream has a current index in the list of markup elements. The next markup element can be retrieved and the index advanced by calling next(). If the index hits the end, hasMore() will return false.
The current markup element can be accessed with get() and as a ComponentTag with getTag().
The stream can be sought to a particular location with setCurrentIndex().
Convenience methods also exist to skip component tags (and any potentially nested markup) or raw markup.
Several boolean methods of the form at*() return true if the markup stream is positioned at a tag with a given set of characteristics.
The resource from which the markup was loaded can be retrieved with getResource(). @author Jonathan Locke

Examples of org.apache.wicket.markup.MarkupStream

    // reset for each render in case the strategy is re-used
    noMoreWicketHeadTagsAllowed = false;


    // Gracefully getAssociateMarkupStream. Throws no exception in case
    // markup is not found
    final MarkupStream markupStream = container.getAssociatedMarkupStream(false);
    if (markupStream == null)
    {
      return;
    }


    // Position pointer at current (first) header
    noMoreWicketHeadTagsAllowed = false;
    while (nextHeaderMarkup(markupStream) != -1)
    {
      // found <wicket:head>
      String headerId = getHeaderId(container, markupStream);


      // Create a HeaderPartContainer and associate the markup
      HeaderPartContainer headerPart = getHeaderPart(container, headerId,
        markupStream.getMarkupFragment());
      if (headerPart != null)
      {
        // A component's header section must only be added once,
        // no matter how often the same Component has been added
        // to the page or any other container in the hierarchy.
        if (htmlContainer.okToRenderComponent(headerPart.getScope(), headerPart.getId()))
        {
          // make sure the Page is accessible
          headerPart.setParent(htmlContainer);
          headerPart.render();
        }
      }


      // Position the stream after <wicket:head>
      markupStream.skipComponent();
    }
  }

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Examples of org.apache.wicket.markup.MarkupStream

    IMarkupFragment markup = getAssociatedMarkup();


    // If we found markup for this container
    if (markup != null)
    {
      return new MarkupStream(markup);
    }


    if (throwException == true)
    {
      // throw exception since there is no associated markup

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Examples of org.apache.wicket.markup.MarkupStream

   *            message that will be used for exceptions
   */
  public final void renderAssociatedMarkup(final String openTagName, final String exceptionMessage)
  {
    // Get associated markup file for the Border or Panel component
    final MarkupStream associatedMarkupStream = new MarkupStream(getMarkup(null));


    // Get open tag in associated markup of border component
    MarkupElement elem = associatedMarkupStream.get();
    if ((elem instanceof ComponentTag) == false)
    {
      associatedMarkupStream.throwMarkupException("Expected the open tag. " +
        exceptionMessage);
    }


    // Check for required open tag name
    ComponentTag associatedMarkupOpenTag = (ComponentTag)elem;
    if (!((associatedMarkupOpenTag != null) && associatedMarkupOpenTag.isOpen() && (associatedMarkupOpenTag instanceof WicketTag)))
    {
      associatedMarkupStream.throwMarkupException(exceptionMessage);
    }


    try
    {
      setIgnoreAttributeModifier(true);
      renderComponentTag(associatedMarkupOpenTag);
      associatedMarkupStream.next();


      String className = null;


      final boolean outputClassName = getApplication().getDebugSettings()
        .isOutputMarkupContainerClassName();

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Examples of org.apache.wicket.markup.MarkupStream

  {
    // Markup must be available
    IMarkupFragment markup = getMarkup();
    if ((markup != null) && (markup.size() > 1))
    {
      MarkupStream stream = new MarkupStream(markup);


      // Skip the first component tag which already belongs to 'this' container
      if (stream.skipUntil(ComponentTag.class))
      {
        stream.next();
      }


      // Search for <wicket:xxx> in the remaining markup and try to resolve the component
      while (stream.skipUntil(ComponentTag.class))
      {
        ComponentTag tag = stream.getTag();
        if (tag.isOpen() || tag.isOpenClose())
        {
          if (tag instanceof WicketTag)
          {
            Component component = ComponentResolvers.resolve(this, stream, tag, null);
            if ((component != null) && (component.getParent() == null))
            {
              if (component.getId().equals(tag.getId()) == false)
              {
                // make sure we are able to get() the component during rendering
                tag.setId(component.getId());
                tag.setModified(true);
              }
              add(component);
            }
          }


          if (tag.isOpen())
          {
            stream.skipToMatchingCloseTag(tag);
          }
        }
        stream.next();
      }
    }
  }

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Examples of org.apache.wicket.markup.MarkupStream


          if (childMarkup != null && childMarkup.size() > 0)
          {
            IComponentResolver componentResolver = (IComponentResolver)resolvingContainer;


            MarkupStream stream = new MarkupStream(childMarkup);


            ComponentTag tag = stream.getTag();


            Component resolvedComponent = resolvingContainer.get(tag.getId());
            if (resolvedComponent == null)
            {
              resolvedComponent = componentResolver.resolve(resolvingContainer, stream, tag);

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Examples of org.apache.wicket.markup.MarkupStream

  {
    // Skip the body markup making sure it contains only raw markup
    super.onComponentTagBody(component, markupStream, openTag);


    // Get the fragments open tag
    MarkupStream stream = new MarkupStream(getMarkup((MarkupContainer)component, null));
    ComponentTag fragmentOpenTag = stream.getTag();


    // if it is an open close tag, skip this fragment.
    if (!fragmentOpenTag.isOpenClose())
    {
      // We'll completely ignore the fragments open tag. It'll not be rendered
      stream.next();


      // Render the body of the fragment
      component.onComponentTagBody(stream, fragmentOpenTag);
    }
  }

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Examples of org.apache.wicket.markup.MarkupStream

    {
      throw new MarkupException("Unable to get page markup: " + getPage().toString());
    }


    // Find the markup fragment
    MarkupStream stream = new MarkupStream(markup);
    IMarkupFragment headerMarkup = null;
    while (stream.skipUntil(ComponentTag.class) && (headerMarkup == null))
    {
      ComponentTag tag = stream.getTag();
      if (tag.isOpen() || tag.isOpenClose())
      {
        if (tag instanceof WicketTag)
        {
          WicketTag wtag = (WicketTag)tag;
          if (wtag.isHeadTag() || wtag.isHeaderItemsTag())
          {
            headerMarkup = stream.getMarkupFragment();
            break;
          }
        }
        else if (tag.getName().equalsIgnoreCase("head") && tag.isAutoComponentTag())
        {
          headerMarkup = stream.getMarkupFragment();
          break;
        }
      }


      stream.next();
    }


    setMarkup(headerMarkup);
    return headerMarkup;
  }

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Examples of org.apache.wicket.markup.MarkupStream

   */
  @Override
  protected void onRender()
  {
    // Loop through the markup in this container
    MarkupStream markupStream = new MarkupStream(getMarkup());
    renderAll(markupStream, null);
  }

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Examples of org.apache.wicket.markup.MarkupStream

    else if (HtmlHeaderResolver.HEADER_ITEMS.equalsIgnoreCase(tag.getName()) &&
        tag.getNamespace().equalsIgnoreCase(getWicketNamespace()))
    {
      if (foundHeaderItemsTag)
      {
        throw new MarkupException(new MarkupStream(markup),
            "More than one <wicket:header-items/> detected in the <head> element. Only one is allowed.");
      }
      else if (foundClosingHead)
      {
        throw new MarkupException(new MarkupStream(markup),
            "Detected <wicket:header-items/> after the closing </head> element.");
      }


      foundHeaderItemsTag = true;
      tag.setId(HEADER_ID);
      tag.setAutoComponentTag(true);
      tag.setModified(true);


      return tag;
    }
    else if (BODY.equalsIgnoreCase(tag.getName()) && (tag.getNamespace() == null))
    {
      // WICKET-4511: We found <body> inside <head> tag. Markup is not valid!
      if (foundHead && !foundClosingHead)
      {
        throw new MarkupException(new MarkupStream(markup),
          "Invalid page markup. Tag <BODY> found inside <HEAD>");
      }


      // We found <body>
      if (foundHead == false)

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Examples of org.apache.wicket.markup.MarkupStream

    {
      throw new MarkupNotFoundException("Markup not found for Component: " + toString());
    }


    // MarkupStream is an Iterator for the markup
    MarkupStream markupStream = new MarkupStream(markup);


    // Flag: we started the render process
    markRendering(true);


    MarkupElement elem = markup.get(0);

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