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Contents
module Alchemy
# The Clipboard holds element ids and page ids
#
# It is stored inside the session.
#
# Each entry can has an action keyword that describes what to do after pasting the item.
#
# The keyword can be one of 'copy' or 'cut'
class Clipboard
attr_accessor :items
def initialize
@items = self.class.empty_clipboard
end
# Returns all items of the collection from category (+:elements+ or +:pages+)
def all(item_type)
@items.fetch(item_type.to_sym)
end
alias_method :[], :all
# Returns the item from collection of category (+:elements+ or +:pages+)
def get(item_type, item_id)
all(item_type).detect { |item| item[:id].to_i == item_id.to_i }
end
# Returns true if the id is already in the collection of category (+:elements+ or +:pages+)
def contains?(item_type, item_id)
all(item_type).collect { |item| item[:id].to_i }.include?(item_id.to_i)
end
# Insert an item into the collection of category (+:elements+ or +:pages+)
def push(item_type, item)
all(item_type).push(normalized(item))
end
def replace(item_type, item)
all(item_type).replace(item.is_a?(Array) ? item : [item])
end
alias_method :[]=, :replace
def remove(item_type, item_id)
all(item_type).delete_if { |item| item[:id].to_i == item_id.to_i }
end
def clear(item_type = nil)
if item_type
all(item_type).clear
else
@items = self.class.empty_clipboard
end
end
def empty?
@items == self.class.empty_clipboard
end
private
def normalized(item)
item[:id] = item[:id].to_i
item
end
protected
def self.empty_clipboard
{:elements => [], :pages => []}
end
end
end
Version data entries
50 entries across 50 versions & 1 rubygems