add support for "xsl-region-before", "xsl-region-after" and fo:page-number tag, submitted by Peter Herweg, see http://nagoya.apache.org/bugzilla/show_bug.cgi?id=23274
add structure for handling table columns in fo/FOInputHandler and its subclasses -- submitted by Peter Herweg, see http://nagoya.apache.org/bugzilla/show_bug.cgi?id=23085
1. convert fo.FOTreeHandler to fire events when it completes a PageSequence or document object
2. move logic that starts layout from fo.FOTreeHandler to apps.Driver.
3. add logic to apps.Driver to handle the events fired from fo.FOTreeHandler
4. end result is that FOTreeHandler now allows other objects to handle page-sequence and document objects in a manner similar to the way SAX allows them to handle XML elements.
git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@196787 13f79535-47bb-0310-9956-ffa450edef68
Clean up StructureHandler's startPageSequence() method to remove unnecessary parameters. Adjust concrete classes accordingly. Add accessor methods in PageSequence to provide this data.
Make StructureHandler and most of its methods abstract. It is never instantiated, has a bunch of empty classes that appear to be patterns. If those classes were to be filled in with logic, it would create problems in the subclasses. Also, any changes to signature now in the subclasses will cause the parent method to be used, which is probably not what would be wanted.
cleaner structures and logic for handling the mif document and elements
uses the structure handler concept to create the mif document
git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@194855 13f79535-47bb-0310-9956-ffa450edef68