tree.rb

Base tree class which given an array of nodes produces different types of trees. The types of trees currently are:

• basic:

  0
    1
      2
      3
    4

• directory:

  0
  |-- 1
  |   |-- 2
  |   `-- 3
  `-- 4

• number:

  1. 0
    1. 1
      1. 2
      2. 3
    2. 4

Tree nodes can be given as an array of arrays or an array of hashes. To render the above basic tree with an array of hashes:

Hirb::Helpers::Tree.render([{:value=>0, :level=>0}, {:value=>1, :level=>1}, {:value=>2, :level=>2},
  {:value=>3, :level=>2}, {:value=>4, :level=>1}])

Note from the hash keys that :level refers to the depth of the tree while :value refers to the text displayed for a node.

To render the above basic tree with an array of arrays:

Hirb::Helpers::Tree.render([[0,0], [1,1], [2,2], [2,3], [1,4]])

Note that the each array pair consists of the level and the value for the node.