sub _parse_attribute_args {
my $self = shift;
- # allow ->add_attribute(name => 'value')
- # or ->add_attribute({ name => 'name', value => 'value' })
+ # allow ->add_to_attribute(name => 'value')
+ # or ->add_to_attribute({ name => 'name', value => 'value' })
my ($name, $value) = @_ > 1 ? @_ : @{$_[0]}{qw(name value)};
return ($name, $self->_zconfig->parser->html_escape($value));
}
sub add_attribute {
+ die "renamed to add_to_attribute. killing this entirely for 1.0";
+}
+
+sub add_to_attribute {
my $self = shift;
my ($name, $value) = $self->_parse_attribute_args(@_);
sub {
my ($evt, $stream) = @_;
my $emit = $self->_stream_from_proto($replace_with);
my $coll = &$coll_proto;
+ # if we're replacing the contents of an in place close
+ # then we need to handle that here
+ if ($options->{content}
+ && ref($coll) eq 'HASH'
+ && $coll->{is_in_place_close}
+ ) {
+ my $close = $stream->next;
+ # shallow copy and nuke in place and raw (to force smart print)
+ $_ = { %$_ }, delete @{$_}{qw(is_in_place_close raw)} for ($coll, $close);
+ $emit = $self->_stream_concat(
+ $emit,
+ $self->_stream_from_array($close),
+ );
+ }
# For a straightforward replace operation we can, in fact, do the emit
# -before- the collect, and my first cut did so. However in order to
# use the captured content in generating the new content, we need
# for the difference to be noticeable
return
($coll
- ? (ref $coll eq 'ARRAY'
+ ? (ref $coll eq 'ARRAY' # [ event, stream ]
? [ $coll->[0], $self->_stream_concat($coll->[1], $emit) ]
- : $self->_stream_concat($coll, $emit)
+ : (ref $coll eq 'HASH' # event or stream?
+ ? [ $coll, $emit ]
+ : $self->_stream_concat($coll, $emit))
)
: $emit
);
}
1;
+
+=head1 NAME
+
+HTML::Zoom::FilterBuilder - Add Filters to a Stream
+
+=head1 SYNOPSIS
+
+Create an L<HTML::Zoom> instance:
+
+ use HTML::Zoom;
+ my $root = HTML::Zoom
+ ->from_html(<<MAIN);
+ <html>
+ <head>
+ <title>Default Title</title>
+ </head>
+ <body bad_attr='junk'>
+ Default Content
+ </body>
+ </html>
+ MAIN
+
+Create a new attribute on the C<body> tag:
+
+ $root = $root
+ ->select('body')
+ ->set_attribute(class=>'main');
+
+Add a extra value to an existing attribute:
+
+ $root = $root
+ ->select('body')
+ ->add_to_attribute(class=>'one-column');
+
+Set the content of the C<title> tag:
+
+ $root = $root
+ ->select('title')
+ ->replace_content('Hello World');
+
+Set content from another L<HTML::Zoom> instance:
+
+ my $body = HTML::Zoom
+ ->from_html(<<BODY);
+ <div id="stuff">
+ <p>Well Now</p>
+ <p id="p2">Is the Time</p>
+ </div>
+ BODY
+
+ $root = $root
+ ->select('body')
+ ->replace_content($body);
+
+Set an attribute on multiple matches:
+
+ $root = $root
+ ->select('p')
+ ->set_attribute(class=>'para');
+
+Remove an attribute:
+
+ $root = $root
+ ->select('body')
+ ->remove_attribute('bad_attr');
+
+will produce:
+
+=begin testinfo
+
+ my $output = $root->to_html;
+ my $expect = <<HTML;
+
+=end testinfo
+
+ <html>
+ <head>
+ <title>Hello World</title>
+ </head>
+ <body class="main one-column"><div id="stuff">
+ <p class="para">Well Now</p>
+ <p id="p2" class="para">Is the Time</p>
+ </div>
+ </body>
+ </html>
+
+=begin testinfo
+
+ HTML
+ is($output, $expect, 'Synopsis code works ok');
+
+=end testinfo
+
+=head1 DESCRIPTION
+
+Given a L<HTML::Zoom> stream, provide methods to apply filters which
+alter the content of that stream.
+
+=head1 METHODS
+
+This class defines the following public API
+
+=head2 set_attribute ( $attr=>value | {name=>$attr,value=>$value} )
+
+Sets an attribute of a given name to a given value for all matching selections.
+
+ $html_zoom
+ ->select('p')
+ ->set_attribute(class=>'paragraph')
+ ->select('div')
+ ->set_attribute(name=>'class', value=>'divider');
+
+
+Overrides existing values, if such exist. When multiple L</set_attribute>
+calls are made against the same or overlapping selection sets, the final
+call wins.
+
+=head2 add_to_attribute ( $attr=>value | {name=>$attr,value=>$value} )
+
+Adds a value to an existing attribute, or creates one if the attribute does not
+yet exist.
+
+ $html_zoom
+ ->select('p')
+ ->set_attribute(class=>'paragraph')
+ ->then
+ ->add_to_attribute(name=>'class', value=>'divider');
+
+Attributes with more than one value will have a dividing space.
+
+=head2 remove_attribute ( $attr | {name=>$attr} )
+
+Removes an attribute and all its values.
+
+ $html_zoom
+ ->select('p')
+ ->set_attribute(class=>'paragraph')
+ ->then
+ ->remove_attribute('class');
+
+Removes attributes from the original stream or events already added.
+
+=head2 collect
+
+ TBD
+
+=head2 collect_content
+
+ TBD
+
+=head2 add_before
+
+ TBD
+
+=head2 add_after
+
+ TBD
+
+=head2 prepend_content
+
+ TBD
+
+=head2 append_content
+
+ TBD
+
+=head2 replace
+
+ TBD
+
+=head2 replace_content
+
+Given a L<HTML::Zoom/select> result, replace the content with a string, array
+or another L<HTML::Zoom> object.
+
+=head2 repeat
+
+ TBD
+
+=head2 repeat_content
+
+ TBD
+
+=head1 ALSO SEE
+
+L<HTML::Zoom>
+
+=head1 AUTHORS
+
+See L<HTML::Zoom> for authors.
+
+=head1 LICENSE
+
+See L<HTML::Zoom> for the license.
+
+=cut
+
projects / catagits/HTML-Zoom.git / blobdiff