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.\" ========================================================================
.\"
.IX Title "XML::Doctype::AttDef 3pm"
.TH XML::Doctype::AttDef 3pm "2014-09-17" "perl v5.20.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.nh
.SH "NAME"
XML::Doctype::AttDef \- A class representing a definition in an <!ATTLIST> tag
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\&   $attr = $elt\->attribute( $name ) ;
\&   $attr\->name ;
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module is used to represent <!ELEMENT> tags in an XML::Doctype object.
It contains <!ATTLIST> tags as well.
.SH "STATUS"
.IX Header "STATUS"
This module is alpha code.  It's developed enough to support XML::ValidWriter,
but need a lot of work.  Some big things that are lacking are:
.SH "METHODS"
.IX Header "METHODS"
.IP "new" 4
.IX Item "new"
.Vb 1
\&   $dtd = XML::Doctype::AttDef\->new( $name, $type, $default ) ;
.Ve
.IP "default" 4
.IX Item "default"
.Vb 5
\&   ( $spec, $value ) = $attr\->default ;
\&   $attr\->default( \*(Aq#REQUIRED\*(Aq ) ;
\&   $attr\->default( \*(Aq#IMPLIED\*(Aq ) ;
\&   $attr\->default( \*(Aq\*(Aq, \*(Aqfoo\*(Aq ) ;
\&   $attr\->default( \*(Aq#FIXED\*(Aq, \*(Aqfoo\*(Aq ) ;
.Ve
.Sp
Sets/gets the default value.  This is a
.IP "quant" 4
.IX Item "quant"
.Vb 2
\&   $attdef\->quant( $q ) ;
\&   $q = $attdef\->quant ;
.Ve
.Sp
Sets/gets the attribute quantifier: '#REQUIRED', '#FIXED', '#IMPLIED', or ''.
.IP "name" 4
.IX Item "name"
.Vb 2
\&   $attdef\->name( $name ) ;
\&   $name = $attdef\->name ;
.Ve
.Sp
Sets/gets this attribute name.  Don't change the name while an attribute
is in an element's attlist, since it will then be filed under the wrong
name.
.IP "default_on_write" 4
.IX Item "default_on_write"
.Vb 2
\&   $attdef\->default_on_write( $value ) ;
\&   $value = $attdef\->default_on_write ;
\&
\&   $attdef\->default_on_write( $attdef\->default ) ;
.Ve
.Sp
Sets/gets the value which is automatically output for this attribute
if none is supplied to \f(CW$writer\fR\->startTag.  This is typically used
to set a document-wide default for #REQUIRED attributes (and perhaps
plain attributes) so that the attribute is treated like a #FIXED tag
and emitted with a fixed value.
.Sp
The default_on_write does not need to be the same as the default unless
the quantifier is #FIXED.
.SH "SUBCLASSING"
.IX Header "SUBCLASSING"
This object uses the fields pragma, so you should use base and fields for
any subclasses.
.SH "AUTHOR"
.IX Header "AUTHOR"
Barrie Slaymaker <barries@slaysys.com>
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
This module is Copyright 2000, 2005 Barrie Slaymaker.  All rights reserved.
.PP
This module is licensed under your choice of the Artistic, \s-1BSD\s0 or
General Public License.