Code Index:

package CSS::SAC::SelectorFactory
EOF

NAME

CSS::SAC::SelectorFactory - the default SelectorFactory

SYNOPSIS

 fill this in later...

DESCRIPTION

This is the default SelectorFactory for CSS::SAC. It creates selectors of all types defined in SAC. You may wish to subclass or replace the default SelectorFactory in order to get your own selector objects.

I plan on adding more flexibility to this factory so that one could tell it the classes to use for various selectors, that would avoid enforcing subclassing/recoding for people that only want to replace a family of factory methods.

I know that some of the method names are quite lengthy, but given the great number of possible selectors it helps to have descriptive names.

METHODS

All the create* methods have a spec-style equivalent. Just remove the _ and capitalize the next letter.

* CSS::SAC::SelectorFactory->new or $cf->new: Creates a new condition factory object.
* $sf->create_any_node_selector: creates a any-node selector
* $sf->create_cdata_section_selector($data): creates a cdata selector
* $sf->create_child_selector($parent_sel,$child_sel): creates a child selector
* $sf->create_comment_selector($data): creates a comment selector
* $sf->create_conditional_selector($sel,$cond): creates a conditional selector
* $sf->create_descendant_selector($parent_sel,$desc_sel): creates a descendant selector
* $sf->create_direct_adjacent_selector($node_type,$child,$adjacent): creates a direct adjacent selector
* $sf->create_element_selector($ns,$lname): creates a element selector
* $sf->create_negative_selector($sel): creates a negative selector
* $sf->create_processing_instruction_selector($target,$data): creates a pi selector
* $sf->create_pseudo_element_selector($ns,$lname): creates a pseudo-e selector
* $sf->create_root_node_selector: creates a root selector
* $sf->create_text_node_selector($data): creates a text selector

AUTHOR

Robin Berjon <robin@knowscape.com>

This module is licensed under the same terms as Perl itself.

### # CSS::SAC::SelectorFactory - the default SelectorFactory # Robin Berjon <robin@knowscape.com> # 24/02/2001 ### package CSS::SAC::SelectorFactory; use strict; use vars qw($VERSION); $VERSION = $CSS::SAC::VERSION || '0.03'; use CSS::SAC::Selector qw(:constants); use CSS::SAC::Selector::Descendant qw(); use CSS::SAC::Selector::Sibling qw(); use CSS::SAC::Selector::Simple qw(); use CSS::SAC::Selector::CharacterData qw(); use CSS::SAC::Selector::Conditional qw(); use CSS::SAC::Selector::Element qw(); use CSS::SAC::Selector::Negative qw(); use CSS::SAC::Selector::ProcessingInstruction qw(); #---------------------------------------------------------------------# # build the fields for an array based object #---------------------------------------------------------------------# use Class::ArrayObjects define => { fields => [] }; #---------------------------------------------------------------------# ### Constructor ####################################################### # # # # #---------------------------------------------------------------------# # CSS::SAC::SelectorFactory->new # creates a new sac selector factory #---------------------------------------------------------------------# sub new { my $class = ref($_[0])?ref(shift):shift; return bless [], $class; } #---------------------------------------------------------------------# # # # # ### Constructor ####################################################### ### Factory Methods ################################################### # # # # # defined aliases *CSS::SAC::SelectorFactory::createAnyNodeSelector = \&create_any_node_selector; *CSS::SAC::SelectorFactory::createCdataSectionSelector = \&create_cdata_section_selector; *CSS::SAC::SelectorFactory::createChildSelector = \&create_child_selector; *CSS::SAC::SelectorFactory::createCommentSelector = \&create_comment_selector; *CSS::SAC::SelectorFactory::createConditionalSelector = \&create_conditional_selector; *CSS::SAC::SelectorFactory::createDescendantSelector = \&create_descendant_selector; *CSS::SAC::SelectorFactory::createDirectAdjacentSelector = \&create_direct_adjacent_selector; *CSS::SAC::SelectorFactory::createElementSelector = \&create_element_selector; *CSS::SAC::SelectorFactory::createNegativeSelector = \&create_negative_selector; *CSS::SAC::SelectorFactory::createProcessingInstructionSelector = \&create_processing_instruction_selector; *CSS::SAC::SelectorFactory::createPseudoElementSelector = \&create_pseudo_element_selector; *CSS::SAC::SelectorFactory::createRootNodeSelector = \&create_root_node_selector; *CSS::SAC::SelectorFactory::createTextNodeSelector = \&create_text_node_selector; #---------------------------------------------------------------------# # my $sel = $sf->create_any_node_selector # creates a any-node selector #---------------------------------------------------------------------# sub create_any_node_selector { my $cf = shift; return CSS::SAC::Selector::Simple->new(ANY_NODE_SELECTOR); } #---------------------------------------------------------------------# #---------------------------------------------------------------------# # my $sel = $sf->create_cdata_section_selector($data) # creates a cdata selector #---------------------------------------------------------------------# sub create_cdata_section_selector { my $cf = shift; my $data = shift; return CSS::SAC::Selector::CharacterData->new( CDATA_SECTION_NODE_SELECTOR, $data ); } #---------------------------------------------------------------------# #---------------------------------------------------------------------# # my $sel = $sf->create_child_selector($parent_sel,$child_sel) # creates a child selector #---------------------------------------------------------------------# sub create_child_selector { my $cf = shift; my $parent_sel = shift; my $child_sel = shift; return CSS::SAC::Selector::Descendant->new( CHILD_SELECTOR, $parent_sel, $child_sel ); } #---------------------------------------------------------------------# #---------------------------------------------------------------------# # my $sel = $sf->create_comment_selector($data) # creates a comment selector #---------------------------------------------------------------------# sub create_comment_selector { my $cf = shift; my $data = shift; return CSS::SAC::Selector::CharacterData->new( COMMENT_NODE_SELECTOR, $data ); } #---------------------------------------------------------------------# #---------------------------------------------------------------------# # my $sel = $sf->create_conditional_selector($sel,$cond) # creates a conditional selector #---------------------------------------------------------------------# sub create_conditional_selector { my $cf = shift; my $sel = shift; my $cond = shift; return CSS::SAC::Selector::Conditional->new( CONDITIONAL_SELECTOR, $sel, $cond ); } #---------------------------------------------------------------------# #---------------------------------------------------------------------# # my $sel = $sf->create_descendant_selector($parent_sel,$desc_sel) # creates a descendant selector #---------------------------------------------------------------------# sub create_descendant_selector { my $cf = shift; my $parent_sel = shift; my $desc_sel = shift; return CSS::SAC::Selector::Descendant->new( DESCENDANT_SELECTOR, $parent_sel, $desc_sel ); } #---------------------------------------------------------------------# #---------------------------------------------------------------------# # my $sel = $sf->create_direct_adjacent_selector($node_type,$child,$adjacent) # creates a direct adjacent selector #---------------------------------------------------------------------# sub create_direct_adjacent_selector { my $cf = shift; my $node_type = shift; my $child = shift; my $adjacent = shift; return CSS::SAC::Selector::Sibling->new( DIRECT_ADJACENT_SELECTOR, $node_type, $child, $adjacent ); } #---------------------------------------------------------------------# #---------------------------------------------------------------------# # my $sel = $sf->create_element_selector($ns,$lname) # creates a element selector #---------------------------------------------------------------------# sub create_element_selector { my $cf = shift; my $ns = shift; my $lname = shift; return CSS::SAC::Selector::Element->new( ELEMENT_NODE_SELECTOR, $ns, $lname ); } #---------------------------------------------------------------------# #---------------------------------------------------------------------# # my $sel = $sf->create_negative_selector($sel) # creates a negative selector #---------------------------------------------------------------------# sub create_negative_selector { my $cf = shift; my $sel = shift; return CSS::SAC::Selector::Negative->new( NEGATIVE_SELECTOR, $sel ); } #---------------------------------------------------------------------# #---------------------------------------------------------------------# # my $sel = $sf->create_processing_instruction_selector($target,$data) # creates a pi selector #---------------------------------------------------------------------# sub create_processing_instruction_selector { my $cf = shift; my $target = shift; my $data = shift; return CSS::SAC::Selector::ProcessingInstruction->new( PROCESSING_INSTRUCTION_NODE_SELECTOR, $target, $data ); } #---------------------------------------------------------------------# #---------------------------------------------------------------------# # my $sel = $sf->create_pseudo_element_selector($ns,$lname) # creates a pseudo-e selector #---------------------------------------------------------------------# sub create_pseudo_element_selector { my $cf = shift; my $ns = shift; my $lname = shift; return CSS::SAC::Selector::Element->new( PSEUDO_ELEMENT_SELECTOR, $ns, $lname ); } #---------------------------------------------------------------------# #---------------------------------------------------------------------# # my $sel = $sf->create_root_node_selector # creates a root selector #---------------------------------------------------------------------# sub create_root_node_selector { my $cf = shift; return CSS::SAC::Selector::Simple->new(ROOT_NODE_SELECTOR); } #---------------------------------------------------------------------# #---------------------------------------------------------------------# # my $sel = $sf->create_text_node_selector($data) # creates a text selector #---------------------------------------------------------------------# sub create_text_node_selector { my $cf = shift; my $data = shift; return CSS::SAC::Selector::CharacterData->new( TEXT_NODE_SELECTOR, $data ); } #---------------------------------------------------------------------# # # # # ### Factory Methods ################################################### ### EXPERIMENTAL Factory Methods ###################################### # # # # #---------------------------------------------------------------------# # my $sel = $sf->create_indirect_adjacent_selector($node_type,$child,$adjacent) # creates an indirect adjacent selector #---------------------------------------------------------------------# sub create_indirect_adjacent_selector { my $cf = shift; my $node_type = shift; my $child = shift; my $adjacent = shift; return CSS::SAC::Selector::Sibling->new( INDIRECT_ADJACENT_SELECTOR, $node_type, $child, $adjacent ); } #---------------------------------------------------------------------# # # # # ### EXPERIMENTAL Factory Methods ###################################### 1;