Class: HMenu::Node

Inherits:
Tree::TreeNode show all
Defined in:
lib/hmenu/node.rb

Instance Method Summary collapse

Methods inherited from Tree::TreeNode

#add_recursive

Instance Method Details

#add_path(path, content_hash) ⇒ Object

See #Tree::TreeNode#add_recursive .

content_hash has the following pre-defined keys:

:n

Integer, for sorting (default 0)

:name

String, displayed name (if different from node name takem from the path)

:description

String, will be rendered as a title HTML attribute

:extra_class

String, add extra HTML/CSS class; you may also provide a space-separeted list of classes; NOTE: class hmenu-selected is special: the JavaScript code from HMenu::JS.out (function reset_menus()) will expand items with such class instead of collapsing them.

You can add any custom keys and use them later for any customization.



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# File 'lib/hmenu/node.rb', line 23

def add_path(path, content_hash) # just for docs
  super(path, content_hash)
end

#to_html_ul(&block) ⇒ Object

Retuns the HTML code for the menu as an unnumbered list.

A block may optionally be provided to modify the output:

html_ul = root.to_html_ul do |node, output| 
  if
      node.content.respond_to? :[] and
      node.content[:extra_info].class == Object

    output[:name] += ' (extra_info is just an Object)'
        # modify the dsplayed name
    output[:extra_class] = 'hmenu-selected' 
        # expanded/hghlightd by JS/CSS
    output[:href] = nil
        # turn off hyperlink
  end
end



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# File 'lib/hmenu/node.rb', line 45

def to_html_ul(&block)
  ctag = 'div' # HTML tag for content
  btag = 'div' # HTML tag for bullets

  o = content ? content.clone : nil
  if block.respond_to? :call
    block.call(self, o)
  end

  s = ""

  hmenu_content_class = "hmenu-content"

  hmenu_content_class << " hmenu-root" if is_root?

  # TODO: use displayed_name
  if o
    hmenu_content_class << ' ' << o[:extra_class] if o[:extra_class]
    s << "<#{ctag} class=\"#{hmenu_content_class}\" title=\"#{(o[:desc] || '')}\">"
    if o[:href]
      s <<
        "<a href=\"#{o[:href]}\">#{o[:name]}</a>" 
    elsif o[:name]
      s << (o[:name] || '')  
    end
    s << "</#{ctag}>"
  else
    s << "<#{ctag} class=\"#{hmenu_content_class}\">" << name.capitalize << "</#{ctag}>"
  end

  if has_children?

    if is_root? 
      s += '<ul class="hmenu">'
    else
      s += "<ul>"
    end

    children.sort.each do |child|

      o = child.content ? child.content.clone : nil
      if block.respond_to? :call
        block.call(child, o)
      end

      css_li_class =  
          child.has_children? ? 
              'hmenu-submenu' : 
              'hmenu-item'
      css_li_class << ' ' << o[:extra_class] if o and o[:extra_class]
      css_bullet_class = 
          child.has_children? ? 
              'hmenu-bullet' : 
              'hmenu-bullet-nochildren'

      s += "<li class=\"#{css_li_class}\">" << "<#{btag} class=\"#{css_bullet_class}\" onclick=\"toggle_submenu(this);\"></#{btag}>" << child.to_html_ul(&block) << "</li>"

    end

    s += "</ul>"

  end

  return s
end