Class: WikiCloth::WikiBuffer::HTMLElement

Inherits:
WikiCloth::WikiBuffer show all
Defined in:
lib/wikicloth/wiki_buffer/html_element.rb

Constant Summary collapse

ALLOWED_ELEMENTS = 
['a','b','i','img','div','span','sup','sub','strike','s','u','font','big','ref','tt','del',
'small','blockquote','strong','pre','code','references','ol','li','ul','dd','dt','dl','center',
'h1','h2','h3','h4','h5','h6','p','table','tr','td','th','tbody','thead','tfoot']
ALLOWED_ATTRIBUTES = 
['src','id','name','style','class','href','start','value','colspan','align','boder',
'cellpadding','cellspacing']
ESCAPED_TAGS = 
[ 'nowiki', 'pre', 'code' ]
SHORT_TAGS = 
[ 'meta','br','hr']
NO_NEED_TO_CLOSE = 
['li','p'] + SHORT_TAGS

Instance Method Summary collapse

Methods inherited from WikiCloth::WikiBuffer

#add_char, #buffer_type, #check_globals, #data, #params, #skip_html?

Constructor Details

#initialize(d = "", options = {}, check = nil) ⇒ HTMLElement

Returns a new instance of HTMLElement.



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# File 'lib/wikicloth/wiki_buffer/html_element.rb', line 17

def initialize(d="",options={},check=nil)
  super("",options)
  self.buffer_type = "Element"
  @in_quotes = false
  @in_single_quotes = false
  @start_tag = 1
  @tag_check = check unless check.nil?
end

Instance Method Details

#element_attributes ⇒ Object 



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# File 'lib/wikicloth/wiki_buffer/html_element.rb', line 87

def element_attributes
  attr = {}
  params.each { |p| attr[p[:name]] = p[:value] if p.kind_of?(Hash) }
  if ALLOWED_ELEMENTS.include?(self.element_name.strip.downcase)
    attr.delete_if { |key,value| !ALLOWED_ATTRIBUTES.include?(key.strip) }
  end
  return attr
end

#element_content ⇒ Object 



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# File 'lib/wikicloth/wiki_buffer/html_element.rb', line 100

def element_content
  @econtent ||= ""
end

#element_name ⇒ Object 



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# File 'lib/wikicloth/wiki_buffer/html_element.rb', line 96

def element_name
  @ename ||= ""
end

#name_attribute ⇒ Object 



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# File 'lib/wikicloth/wiki_buffer/html_element.rb', line 82

def name_attribute
  params.each { |p| return p[:value].to_slug if p.kind_of?(Hash) && p[:name] == "name" }
  return nil
end

#run_globals? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/wikicloth/wiki_buffer/html_element.rb', line 26

def run_globals?
  return ESCAPED_TAGS.include?(self.element_name) ? false : true
end

#to_s ⇒ Object 



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# File 'lib/wikicloth/wiki_buffer/html_element.rb', line 30

def to_s
  if NO_NEED_TO_CLOSE.include?(self.element_name)
    return "<#{self.element_name} />" if SHORT_TAGS.include?(self.element_name)
    return "</#{self.element_name}><#{self.element_name}>" if @tag_check == self.element_name
  end

  if ESCAPED_TAGS.include?(self.element_name)
    # escape all html inside this element
    self.element_content = self.element_content.gsub('<','&lt;').gsub('>','&gt;')
    # hack to fix <code><nowiki> nested mess
    self.element_content = self.element_content.gsub(/&lt;[\/]*\s*nowiki\s*&gt;/,'')
  end

  lhandler = @options[:link_handler]
  case self.element_name
  when "ref"
    self.element_name = "sup"
    named_ref = self.name_attribute
    ref = lhandler.find_reference_by_name(named_ref) unless named_ref.nil?
    if ref.nil?
      lhandler.references << { :name => named_ref, :value => self.element_content, :count => 0 }
      ref = lhandler.references.last
    end
    ref_id = (named_ref.nil? ? "" : "#{named_ref}_") + "#{lhandler.reference_index(ref)}-#{ref[:count]}"
    self.params << { :name => "id", :value => "cite_ref-#{ref_id}" }
    self.params << { :name => "class", :value => "reference" }
    self.element_content = "[<a href=\"#cite_note-" + (named_ref.nil? ? "" : "#{named_ref}_") + 
	"#{lhandler.reference_index(ref)}\">#{lhandler.reference_index(ref)}</a>]"
    ref[:count] += 1
  when "references"
    ref_count = 0
    self.element_name = "ol"
    self.element_content = lhandler.references.collect { |r| 
      ref_count += 1
      ref_name = (r[:name].nil? ? "" : r[:name].to_slug + "_")
      ret = "<li id=\"cite_note-#{ref_name}#{ref_count}\"><b>"
      1.upto(r[:count]) { |x| ret += "<a href=\"#cite_ref-#{ref_name}#{ref_count}-#{x-1}\">" + 
(r[:count] == 1 ? "^" : (x-1).to_s(26).tr('0-9a-p', 'a-z')) + "</a> " }
      ret += "</b> #{r[:value]}</li>"
    }.to_s
  when "nowiki"
    return self.element_content
  end

  tmp = elem.tag!(self.element_name, self.element_attributes) { |x| x << self.element_content }
  unless ALLOWED_ELEMENTS.include?(self.element_name)
    tmp.gsub!(/[\-!\|&"\{\}\[\]]/) { |r| self.escape_char(r) }
    return tmp.gsub('<', '&lt;').gsub('>', '&gt;')
  end
  tmp
end