class Slideshow::Headers
Public Class Methods
new( config )
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# File lib/slideshow/headers.rb, line 7 def initialize( config ) @hash = {} @config = config end
Public Instance Methods
[]( key )
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# File lib/slideshow/headers.rb, line 41 def []( key ) value = get( key ) if value.nil? puts "** Warning: header '#{key}' undefined" value = "- #{key} not found -" end value end
code_engine()
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# File lib/slideshow/headers.rb, line 51 def code_engine get( 'code-engine' ) end
code_txmt()
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# File lib/slideshow/headers.rb, line 55 def code_txmt get( 'code-txmt' ) end
get( key, default=nil )
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todo: rename get to fetch??
# File lib/slideshow/headers.rb, line 61 def get( key, default=nil ) key = normalize_key(key) value = @hash.fetch( key, nil ) value = @config.header( key ) if value.nil? # try lookup in config properties next if value.nil? default else value end end
get_boolean( key, default )
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# File lib/slideshow/headers.rb, line 72 def get_boolean( key, default ) value = get( key, default ) if value.nil? default else (value == true || value =~ /t|true|yes|on/i) ? true : false end end
gradient=( line )
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# File lib/slideshow/headers.rb, line 24 def gradient=( line ) # split into theme (first value) and colors (everything else) # e.g. diagonal red black # todo/check: translate value w/ v.tr( '-', '_' ) ?? values = line.split( ' ' ) put( 'gradient-theme', values.first ) if values.size > 0 put( 'gradient-colors', values[ 1..-1].join( ' ' ) ) if values.size > 1 end
has_gradient?()
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# File lib/slideshow/headers.rb, line 36 def has_gradient? # has user defined gradient (using headers)? (default values do NOT count) @hash.has_key?( :gradient_theme ) || @hash.has_key?( :gradient_colors ) end
put( key, value )
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todo: rename put to store like std hash method
# File lib/slideshow/headers.rb, line 13 def put( key, value ) key = normalize_key( key ) setter = "#{key}=".to_sym if respond_to?( setter ) send( setter, value ) else @hash[ key ] = value end end
Private Instance Methods
normalize_key( key )
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# File lib/slideshow/headers.rb, line 83 def normalize_key( key ) key.to_s.downcase.tr('-', '_').to_sym end