igor-alexandrov/wiselinks

class Link
  constructor: (@page, @$link) ->

  allows_process: (event) ->
    !(this._cross_origin_link(event.currentTarget) ||
      this._non_standard_click(event))

  process: ->
    type = if (@$link.data('push') == 'partial')
      'partial'
    else
      'template'

    @page.load(@$link.attr("href"), @$link.data('target'), type)

  _cross_origin_link: (link) ->
    this._different_protocol(link) ||
    this._different_host(link) ||
    this._different_port(link)

  _different_protocol: (link) ->
    return false if link.protocol == ':' || link.protocol == ''
    location.protocol != link.protocol

  # IE returns host with port and all other browsers return host without port
  #
  _different_host: (link) ->
    return false if link.host == ''
    (location.host.split(':')[0] != link.host.split(':')[0])

  # IE returns for link.port "80" but the location.port is ""
  # Stupid but "modern" browsers return correct values
  #
  _different_port: (link) ->
    port_equals = (location.port == link.port) ||
      (location.port == '' && (link.port == "80" || link.port == "443"))

    !port_equals

  _non_standard_click: (event) ->
    event.metaKey || event.ctrlKey || event.shiftKey || event.altKey

window._Wiselinks = {} if window._Wiselinks == undefined
window._Wiselinks.Link = Link