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module Compass
module BrowserSupport
extend self
ASPECTS = %w(webkit moz o ms svg pie css2)
SIMPLE_FUNCTIONS = {
"image" => %w(), # No browsers implement this yet.
"cross-fade" => %w() # No browsers implement this yet.
}
# 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
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