Sha256: 3cf5760354576997b3b1883a09c212813360abd6e7fc479a92ba2e3db9b03e47
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Size: 1.34 KB
Versions: 8
Compression:
Stored size: 1.34 KB
Contents
require 'avatar/source/abstract_source'
module Avatar # :nodoc:
module Source # :nodoc:
class SourceChain
include AbstractSource
# :nodoc:
def initialize
clear!
end
# Clear the chain
def clear!
@chain = []
end
# Retrieve the +n+<sup>th</sup> Source.
def [](n)
@chain[n]
end
# Add a source to the chain. +source+ must be an instance of (a subclass of) Avatar::Source::AbstractSource.
def add_source(source)
raise ArgumentError.new("#{source} is not an Avatar::Source::AbstractSource") unless source.kind_of?(Avatar::Source::AbstractSource)
@chain << source
end
# Alias for <code>add_source</code>
def <<(source)
add_source(source)
end
# True unless a Source has been added.
def empty?
@chain.empty?
end
# Iterate through the chain and return the first URL returned.
# Any error raised will propagate. Duplicates +options+ before
# passing so each Source receives the same arguments.
def avatar_url_for(person, options = {})
@chain.each do |source|
result = source.avatar_url_for(person, options.dup)
return result unless result.nil?
end
return nil
end
end
end
end
Version data entries
8 entries across 8 versions & 3 rubygems