Package org.apache.fop.render.ps.extensions

Class AbstractPSExtensionObject

java.lang.Object
org.apache.fop.fo.FONode
org.apache.fop.render.ps.extensions.AbstractPSExtensionObject
All Implemented Interfaces:
Cloneable
Direct Known Subclasses:
PSPageSetupCodeElement, PSSetupCodeElement
public abstract class AbstractPSExtensionObject extends FONode
Base class for the PostScript-specific extension elements.

  • Constructor Details

    • AbstractPSExtensionObject

      public AbstractPSExtensionObject(FONode parent)
      Main constructor.
      Parameters:
      parent - the parent node
      See Also:

  • Method Details

    • validateChildNode

      protected void validateChildNode(Locator loc, String nsURI, String localName) throws ValidationException
      Checks to make sure, during SAX processing of input document, that the incoming node is valid for this (parent) node (e.g., checking to see that fo:table is not an immediate child of fo:root) called from FOTreeBuilder.startElement(String, String, String, Attributes) before constructing the child FObj.
      Overrides:
      validateChildNode in class FONode
      Parameters:
      loc - location in the FO source file
      nsURI - namespace of incoming node
      localName - name of the incoming node (without namespace prefix)
      Throws:
      ValidationException - if incoming node not valid for parent

    • characters

      protected void characters(char[] data, int start, int length, PropertyList pList, Locator locator)
      Adds characters. Does nothing by default. To be overridden in subclasses that allow #PCDATA content.
      Overrides:
      characters in class FONode
      Parameters:
      data - array of characters containing text to be added
      start - starting array element to add
      length - number of elements to add
      pList - currently applicable PropertyList
      locator - location in the XSL-FO source file.

    • getNamespaceURI

      public String getNamespaceURI()
      Returns the namespace URI for this node
      Overrides:
      getNamespaceURI in class FONode
      Returns:
      the namespace URI for this node

    • getNormalNamespacePrefix

      public String getNormalNamespacePrefix()
      Returns the normally used namespace prefix for this node
      Specified by:
      getNormalNamespacePrefix in class FONode
      Returns:
      the normally used namespace prefix for this kind of node (ex. "fo" for XSL-FO)

    • processNode

      public void processNode(String elementName, Locator locator, Attributes attlist, PropertyList propertyList) throws FOPException
      Initialize the node with its name, location information, and attributes The attributes must be used immediately as the sax attributes will be altered for the next element.
      Overrides:
      processNode in class FONode
      Parameters:
      elementName - element name (e.g., "fo:block")
      locator - Locator object (ignored by default)
      attlist - Collection of attributes passed to us from the parser.
      propertyList - the property list of the parent node
      Throws:
      FOPException - for errors or inconsistencies in the attributes

    • endOfNode

      public void endOfNode() throws FOPException
      Primarily used for making final content model validation checks and/or informing the FOEventHandler that the end of this FO has been reached. The default implementation simply calls FONode.finalizeNode(), without sending any event to the FOEventHandler.

      Note: the recommended way to override this method in subclasses is

      super.endOfNode(); // invoke finalizeNode()

      getFOEventHandler().endXXX(); // send endOfNode() notification

      Overrides:
      endOfNode in class FONode
      Throws:
      FOPException - if there's a problem during processing

    • getExtensionAttachment

      public ExtensionAttachment getExtensionAttachment()
      This method is overridden by extension elements and allows the extension element to return a pass-through attachment which the parent formatting objects should simply carry with them but otherwise ignore. This mechanism is used to pass non-standard information from the FO tree through to the layout engine and the renderers.
      Overrides:
      getExtensionAttachment in class FONode
      Returns:
      the extension attachment if one is created by the extension element, null otherwise.