module Compass module BrowserSupport extend self ASPECTS = %w(webkit moz o ms svg css2) SIMPLE_FUNCTIONS = { "image" => %w(webkit), "cross-fade" => %w(webkit), "repeating-linear-gradient" => %w(webkit moz), # Hacky implementation "repeating-radial-gradient" => %w(webkit moz) # Hacky implementation } # Adds support for one or more aspects for the given simple function # Example: # # Compass::BrowserSupport.add_support("image", "moz", "webkit") # # => Adds support for moz and webkit to the image() function. # # This function can be called one or more times in a compass configuration # file in order to add support for new, simple browser functions without # waiting for a new compass release. def add_support(function, *aspects) aspects.each do |aspect| unless ASPECTS.include?(aspect) Compass::Util.compass_warn "Unknown support aspect: #{aspect}" next end unless supports?(function, aspect) SIMPLE_FUNCTIONS[function.to_s] ||= [] SIMPLE_FUNCTIONS[function.to_s] << aspect.to_s end end end # Removes support for one or more aspects for the given simple function # Example: # # Compass::BrowserSupport.remove_support("image", "o", "ms") # # => Adds support for moz and webkit to the image() function. # # This function can be called one or more times in a compass configuration # file in order to remove support for simple functions that no longer need to # a prefix without waiting for a new compass release. def remove_support(function, *aspects) aspects.each do |aspect| unless ASPECTS.include?(aspect) Compass::Util.compass_warn "Unknown support aspect: #{aspect}" next end SIMPLE_FUNCTIONS[function.to_s].reject!{|a| a == aspect.to_s} end end def supports?(function, aspect) SIMPLE_FUNCTIONS.has_key?(function.to_s) && SIMPLE_FUNCTIONS[function.to_s].include?(aspect.to_s) end def has_aspect?(function) SIMPLE_FUNCTIONS.has_key?(function.to_s) && SIMPLE_FUNCTIONS[function.to_s].size > 0 end end end