sub add_before {
my ($self, $events) = @_;
- sub { return $self->_stream_from_array(@$events, $_[0]) };
+ my $coll_proto = $self->collect({ passthrough => 1 });
+ sub {
+ my $emit = $self->_stream_from_proto($events);
+ my $coll = &$coll_proto;
+ if($coll) {
+ if(ref $coll eq 'ARRAY') {
+ my $firstbit = $self->_stream_from_proto([$coll->[0]]);
+ return $self->_stream_concat($emit, $firstbit, $coll->[1]);
+ } elsif(ref $coll eq 'HASH') {
+ return [$emit, $coll];
+ } else {
+ return $self->_stream_concat($emit, $coll);
+ }
+ } else { return $emit }
+ }
}
sub add_after {
my $coll_proto = $self->collect({ passthrough => 1 });
sub {
my ($evt) = @_;
- my $emit = $self->_stream_from_array(@$events);
+ my $emit = $self->_stream_from_proto($events);
my $coll = &$coll_proto;
return ref($coll) eq 'HASH' # single event, no collect
? [ $coll, $emit ]
sub prepend_content {
my ($self, $events) = @_;
+ my $coll_proto = $self->collect({ passthrough => 1, content => 1 });
sub {
my ($evt) = @_;
+ my $emit = $self->_stream_from_proto($events);
if ($evt->{is_in_place_close}) {
$evt = { %$evt }; delete @{$evt}{qw(raw is_in_place_close)};
return [ $evt, $self->_stream_from_array(
- @$events, { type => 'CLOSE', name => $evt->{name} }
+ $emit->next, { type => 'CLOSE', name => $evt->{name} }
) ];
}
- return $self->_stream_from_array($evt, @$events);
+ my $coll = &$coll_proto;
+ return [ $coll->[0], $self->_stream_concat($emit, $coll->[1]) ];
};
}
my $coll_proto = $self->collect({ passthrough => 1, content => 1 });
sub {
my ($evt) = @_;
+ my $emit = $self->_stream_from_proto($events);
if ($evt->{is_in_place_close}) {
$evt = { %$evt }; delete @{$evt}{qw(raw is_in_place_close)};
return [ $evt, $self->_stream_from_array(
- @$events, { type => 'CLOSE', name => $evt->{name} }
+ $emit->next, { type => 'CLOSE', name => $evt->{name} }
) ];
}
my $coll = &$coll_proto;
- my $emit = $self->_stream_from_array(@$events);
return [ $coll->[0], $self->_stream_concat($coll->[1], $emit) ];
};
}
if ($repeat_between) {
$options->{filter} = sub {
$_->select($repeat_between)->collect({ into => \@between })
- };
+ }
}
my $repeater = sub {
my $s = $self->_stream_from_proto($repeat_for);
->select('p')
->set_attribute(class=>'paragraph')
->select('div')
- ->set_attribute(name=>'class', value=>'divider');
+ ->set_attribute({name=>'class', value=>'divider'});
Overrides existing values, if such exist. When multiple L</set_attribute>
=head2 add_to_attribute
Adds a value to an existing attribute, or creates one if the attribute does not
-yet exist.
+yet exist. You may call this method with either an Array or HashRef of Args.
+
+Here's the 'long form' HashRef:
+
+ $html_zoom
+ ->select('p')
+ ->set_attribute(class=>'paragraph')
+ ->then
+ ->add_to_attribute({name=>'class', value=>'divider'});
+
+And the exact same effect using the 'short form' Array:
$html_zoom
->select('p')
->set_attribute(class=>'paragraph')
->then
- ->add_to_attribute(name=>'class', value=>'divider');
+ ->add_to_attribute(class=>'divider');
Attributes with more than one value will have a dividing space.
=head2 prepend_content
- TBD
+Similar to add_before, but adds the content to the match.
+
+ HTML::Zoom
+ ->from_html(q[<p>World</p>])
+ ->select('p')
+ ->prepend_content("Hello ")
+ ->to_html
+
+ ## <p>Hello World</p>
+
+Acceptable values are strings, scalar refs and L<HTML::Zoom> objects
=head2 append_content
- TBD
+Similar to add_after, but adds the content to the match.
+
+ HTML::Zoom
+ ->from_html(q[<p>Hello </p>])
+ ->select('p')
+ ->prepend_content("World")
+ ->to_html
+
+ ## <p>Hello World</p>
+
+Acceptable values are strings, scalar refs and L<HTML::Zoom> objects
=head2 replace
=head2 repeat
- $zoom->select('.item')->repeat(sub {
- if (my $row = $db_thing->next) {
- return sub { $_->select('.item-name')->replace_content($row->name) }
- } else {
- return
- }
- }, { flush_before => 1 });
-
-Run I<$repeat_for>, which should be iterator (code reference) returning
-subroutines, reference to array of subroutines, or other zoom-able object
-consisting of transformations. Those subroutines would be run with $_
-local-ized to result of L<HTML::Zoom/select> (of collected elements), and with
-said result passed as parameter to subroutine.
+For a given selection, repeat over transformations, typically for the purposes
+of populating lists. Takes either an array of anonymous subroutines or a zoom-
+able object consisting of transformation.
-You might want to use iterator when you don't have all elements upfront
-
- $zoom = $zoom->select('.contents')->repeat(sub {
- while (my $line = $fh->getline) {
- return sub {
- $_->select('.lno')->replace_content($fh->input_line_number)
- ->select('.line')->replace_content($line)
- }
- }
- return
- });
-
-You might want to use array reference if it doesn't matter that all iterations
-are pre-generated
+Example of array reference style (when it doesn't matter that all iterations are
+pre-generated)
$zoom->select('table')->repeat([
map {
}
} @list
]);
+
+Subroutines would be run with $_ localized to result of L<HTML::Zoom/select> (of
+collected elements), and with said result passed as parameter to subroutine.
+
+You might want to use CodeStream when you don't have all elements upfront
+
+ $zoom->select('.contents')->repeat(sub {
+ HTML::Zoom::CodeStream->new({
+ code => sub {
+ while (my $line = $fh->getline) {
+ return sub {
+ $_->select('.lno')->replace_content($fh->input_line_number)
+ ->select('.line')->replace_content($line)
+ }
+ }
+ return
+ },
+ })
+ });
-In addition to common options as in L</collect>, it also supports
+In addition to common options as in L</collect>, it also supports:
=over
projects / catagits/HTML-Zoom.git / blobdiff