Subject: Feature Suggestion - result subtrees as macro arguments (REVISED) From: "G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx> Date: Tue, 12 Jan 1999 22:03:49 -0500 |
(After reviewing my post, I realize I screwed up and mixed two of my (incompatible) thoughts into one ... this posting wholly replaces the previous posting with the same title. Sorry for the confusion. ............. Ken) Right now, macro arguments are attribute value templates: <!ELEMENT xsl:arg EMPTY> <!ATTLIST xsl:arg name NMTOKEN #REQUIRED value CDATA #REQUIRED > ... and their default value can be specified: <!ELEMENT xsl:macro-arg EMPTY> <!ATTLIST xsl:macro-arg name NMTOKEN #REQUIRED default CDATA #IMPLIED > I've come across a situation where I'd like to supply to the macro a fragment of the result tree as the value of an argument, as in the following example: <xsl:macro name="page-layout"> <xsl:macro-arg name="title-block"> <xsl:apply-templates match="title-prefix"/> <xsl:apply-templates match="title"/> <xsl:apply-templates match="title-suffix"/> </xsl:macro-arg> <xsl:apply-templates select="page-prefix"/> <xsl:arg name="title-block"/> <xsl:contents/> </xsl:macro> ... <xsl:template match="toc"> <xsl:invoke macro="page-layout"> <!--supply custom title--> <xsl:use-arg name="title-block"> <xsl:text>Table of Contents - </xsl:text> <xsl:apply-templates select="../prestitle"/> </xsl:use-arg> <xsl:apply-templates mode="toccreation" select="/"> </xsl:invoke> </xsl:template> ... <xsl:template match="frame"> <xsl:invoke macro="page-layout"> <!--using default title--> <xsl:apply-templates/> </xsl:invoke> </xsl:template> In the above, matching a normal frame adds the default "title-block" subtree to the result tree, while matching the toc frame adds the supplied "title-block" subtree to the result tree. Can someone think of a better name than "xsl:use-arg" to identify the subtree to be used as the macro argument in place of the default subtree to use for the macro argument? ............ Ken -- G. Ken Holman mailto:gkholman@xxxxxxxxxxxxxxxxxxxx Crane Softwrights Ltd. http://www.CraneSoftwrights.com/s/ Training: http://www.CraneSoftwrights.com/s/schedule.htm Resources: http://www.CraneSoftwrights.com/s/resources.htm Shareware: http://www.CraneSoftwrights.com/s/shareware.htm Next XSL Training (see training link): WWW8 - 1999-05-11 XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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