Sha256: 1de8f7bd85f7a64a16183db658a8547dc3742ef59f6ff6a2e8c2ca334f49a773
Contents?: true
Size: 1.53 KB
Versions: 7
Compression:
Stored size: 1.53 KB
Contents
module Vedeu
class Menu
def initialize(collection)
@collection = collection
@current = 0
@selected = nil
end
def current
@current
end
def selected
@selected
end
def current_item
[@current, @collection[@current]]
end
def selected_item
return nil unless @selected
[@selected, @collection[@selected]]
end
def items
items = []
@collection.each_with_index do |item, index|
if index == @current && index == @selected
items << [true, true, item]
elsif index == @current
items << [false, true, item]
elsif index == @selected
items << [true, false, item]
else
items << [false, false, item]
end
end
items
end
def render
lines = []
items.each do |(sel, cur, item)|
if sel && cur
lines << "*> #{item}"
elsif cur
lines << " > #{item}"
elsif sel
lines << "* #{item}"
else
lines << " #{item}"
end
end
lines
end
def top
@current = 0
end
def bottom
@current = last
end
def next
@current += 1 if @current < last
self
end
def prev
@current -= 1 if @current > 0
self
end
def select
@selected = @current
end
def deselect
@selected = nil
end
def last
@collection.size - 1
end
def size
@collection.size
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems