NAME

       Template::Plugin::XML::Style - Simple XML stylesheet transfomations

SYNOPSIS

           [% USE xmlstyle
                  table = {
                      attributes = {
                          border      = 0
                          cellpadding = 4
                          cellspacing = 1
                      }
                  }
           %]

           [% FILTER xmlstyle %]
           <table>
           <tr>
             <td>Foo</td> <td>Bar</td> <td>Baz</td>
           </tr>
           </table>
           [% END %]

DESCRIPTION

       This plugin defines a filter for performing simple stylesheet based transformations of XML
       text.

       Named parameters are used to define those XML elements which require transformation.
       These may be specified with the USE directive when the plugin is loaded and/or with the
       FILTER directive when the plugin is used.

       This example shows how the default attributes "border="0"" and "cellpadding="4"" can be
       added to <table> elements.

           [% USE xmlstyle
                  table = {
                      attributes = {
                          border      = 0
                          cellpadding = 4
                      }
                  }
           %]

           [% FILTER xmlstyle %]
           <table>
              ...
           </table>
           [% END %]

       This produces the output:

           <table border="0" cellpadding="4">
              ...
           </table>

       Parameters specified within the USE directive are applied automatically each time the
       "xmlstyle" FILTER is used.  Additional parameters passed to the FILTER directive apply for
       only that block.

           [% USE xmlstyle
                  table = {
                      attributes = {
                          border      = 0
                          cellpadding = 4
                      }
                  }
           %]

           [% FILTER xmlstyle
                  tr = {
                      attributes = {
                          valign="top"
                      }
                  }
           %]
           <table>
              <tr>
                ...
              </tr>
           </table>
           [% END %]

       Of course, you may prefer to define your stylesheet structures once and simply reference
       them by name.  Passing a hash reference of named parameters is just the same as specifying
       the named parameters as far as the Template Toolkit is concerned.

           [% style_one = {
                 table = { ... }
                 tr    = { ... }
              }
              style_two = {
                 table = { ... }
                 td    = { ... }
              }
              style_three = {
                 th = { ... }
                 tv = { ... }
              }
           %]

           [% USE xmlstyle style_one %]

           [% FILTER xmlstyle style_two %]
              # style_one and style_two applied here
           [% END %]

           [% FILTER xmlstyle style_three %]
              # style_one and style_three applied here
           [% END %]

       Any attributes defined within the source tags will override those specified in the style
       sheet.

           [% USE xmlstyle
                  div = { attributes = { align = 'left' } }
           %]

           [% FILTER xmlstyle %]
           <div>foo</div>
           <div align="right">bar</div>
           [% END %]

       The output produced is:

           <div align="left">foo</div>
           <div align="right">bar</div>

       The filter can also be used to change the element from one type to another.

           [% FILTER xmlstyle
                     th = {
                         element = 'td'
                         attributes = { bgcolor='red' }
                     }
           %]
           <tr>
             <th>Heading</th>
           </tr>
           <tr>
             <td>Value</td>
           </tr>
           [% END %]

       The output here is as follows.  Notice how the end tag "</th>" is changed to "</td>" as
       well as the start tag.

           <tr>
             <td bgcolor="red">Heading</td>
           </tr>
           <tr>
             <td>Value</td>
           </tr>

       You can also define text to be added immediately before or after the start or end tags.
       For example:

           [% FILTER xmlstyle
                     table = {
                         pre_start = '<div align="center">'
                         post_end  = '</div>'
                     }
                     th = {
                         element    = 'td'
                         attributes = { bgcolor='red' }
                         post_start = '<b>'
                         pre_end    = '</b>'
                     }
           %]
           <table>
           <tr>
             <th>Heading</th>
           </tr>
           <tr>
             <td>Value</td>
           </tr>
           </table>
           [% END %]

       The output produced is:

           <div align="center">
           <table>
           <tr>
             <td bgcolor="red"><b>Heading</b></td>
           </tr>
           <tr>
             <td>Value</td>
           </tr>
           </table>
           </div>

AUTHOR

       Andy Wardley

COPYRIGHT

       Copyright (C) 2001-2006 Andy Wardley.  All Rights Reserved.

       This module is free software; you can redistribute it and/or modify it under the same
       terms as Perl itself.

SEE ALSO

       Template::Plugin