Class: MotionMarkdownItPlugins::CheckboxReplace

Inherits:
Object
  • Object
show all
Defined in:
lib/motion-markdown-it-plugins/checkbox_replace/checkbox_replace.rb

Constant Summary collapse

PATTERN = 
/\[(X|\s|\_|\-)\]\s(.*)/i

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(md, options) ⇒ CheckboxReplace 



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# File 'lib/motion-markdown-it-plugins/checkbox_replace/checkbox_replace.rb', line 16

def initialize(md, options)
  @lastId  = 0
  defaults = {divWrap: false, divClass: 'checkbox', idPrefix: 'checkbox'}
  @options = defaults.merge(options)
end

Class Method Details

.init_plugin(md, options) ⇒ Object 



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# File 'lib/motion-markdown-it-plugins/checkbox_replace/checkbox_replace.rb', line 10

def self.init_plugin(md, options)
  check = CheckboxReplace.new(md, options)
  md.core.ruler.push('checkbox', lambda { |state| check.checkbox(state) } )
end

Instance Method Details

#checkbox(state) ⇒ Object 



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# File 'lib/motion-markdown-it-plugins/checkbox_replace/checkbox_replace.rb', line 89

def checkbox(state)
  blockTokens = state.tokens
  j = 0
  l = blockTokens.length

  # blockTokens.each do |xtoken|
  #   puts "  " * xtoken.level + "#{xtoken.inspect}"
  # end
  
  while j < l
    if blockTokens[j].type != "inline"
      j += 1
      next
    end
    tokens = blockTokens[j].children
    
    # # We scan from the end, to keep position when new tags added.
    # # Use reversed logic in links start/end match
    # i = tokens.length - 1
    # while i >= 0
    #   token = tokens[i]
    #   blockTokens[j].children = tokens = arrayReplaceAt(tokens, i, splitTextToken(token))
    #   i -= 1
    # end

    token = blockTokens[j]
    arrayReplaceAt(blockTokens, j, splitTextToken(token))

    j += 1
  end
end

#createTokens(checked, label, original) ⇒ Object 



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# File 'lib/motion-markdown-it-plugins/checkbox_replace/checkbox_replace.rb', line 23

def createTokens(checked, label, original)
  nodes = []

  # <div class="checkbox">
  if @options[:divWrap]
    token = MarkdownIt::Token.new("checkbox_open", "div", 1)
    token.attrs = [["class", @options[:divClass]]]
    nodes.push token
  end

  # <input type="checkbox" id="checkbox{n}" checked="true">
  id          = "#{@options[:idPrefix]}#{@lastId}"
  @lastId    += 1
  token       = MarkdownIt::Token.new("checkbox_input", "input", 0)
  token.attrs = [["type","checkbox"],["id",id]]
  if (checked == true)
    token.attrs.push ["checked","true"]
  end
  nodes.push token

  # <label for="checkbox{n}">
  token       = MarkdownIt::Token.new("label_open", "label", 1)
  token.attrs = [["for",id]]
  nodes.push token

  # content of label tag
  token         = MarkdownIt::Token.new("text", "", 0)
  token.content = label
  original.children[0].content = label
  original.children.each {|tok| nodes.push tok}

  # closing tags
  nodes.push MarkdownIt::Token.new("label_close", "label", -1)
  if @options[:divWrap]
    nodes.push MarkdownIt::Token.new("checkbox_close", "div", -1)
  end

  original.children = nodes
  return original
end

#splitTextToken(original) ⇒ Object

original should be an inline node. it can only be a task item if the first child node has the right text



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# File 'lib/motion-markdown-it-plugins/checkbox_replace/checkbox_replace.rb', line 67

def splitTextToken(original)

  if original.children
    first_node = original.children[0]
    if first_node
      text      = first_node.content
      matches   = text.match(PATTERN)

      return original if matches == nil

      value     = matches[1]
      label     = matches[2]
      checked   = false
      checked   = true if (value == "X" || value == "x")

      return createTokens(checked, label, original)
    end
  end
  return original
end