/*
 * @requires jQuery v1.2 or later
 *
 * Usage:
 *
 *  jQuery(document).ready(function() {
 *    jQuery('a[rel*=showdisclaimer]').disclaimer()
 *  })
 *
 *  <a href="#terms" rel="showdisclaimer">Terms</a>
 *    Loads the #terms div in the box
 *
 *  <a href="terms.html" rel="showdisclaimer">Terms</a>
 *    Loads the terms.html page in the box
 *
 *  <a href="terms.png" rel="showdisclaimer">Terms</a>
 *    Loads the terms.png image in the box
 *
 *
 *  You can also use it programmatically:
 *
 *    jQuery.disclaimer('some html')
 *    jQuery.disclaimer('some html', 'my-groovy-style')
 *
 *  The above will open a disclaimer box with "some html" as the content.
 *
 *    jQuery.disclaimer(function($) {
 *      $.get('blah.html', function(data) { $.disclaimer(data) })
 *    })
 *
 *  The above will show a loading screen before the passed function is called,
 *  allowing for a better ajax experience.
 *
 *  The box function can also display an ajax page, an image, or the contents of a div:
 *
 *    jQuery.disclaimer({ ajax: 'remote.html' })
 *    jQuery.disclaimer({ ajax: 'remote.html' }, 'my-groovy-style')
 *    jQuery.disclaimer({ image: 'stairs.jpg' })
 *    jQuery.disclaimer({ image: 'stairs.jpg' }, 'my-groovy-style')
 *    jQuery.disclaimer({ div: '#box' })
 *    jQuery.disclaimer({ div: '#box' }, 'my-groovy-style')
 *
 *  Want to close the box?  Trigger the 'close.disclaimer' document event:
 *
 *    jQuery(document).trigger('close.disclaimer')
 *
 *  The box also has a bunch of other hooks:
 *
 *    loading.disclaimer
 *    beforeReveal.disclaimer
 *    reveal.disclaimer (aliased as 'afterReveal.disclaimer')
 *    init.disclaimer
 *    afterClose.disclaimer
 *
 *  Simply bind a function to any of these hooks:
 *
 *   $(document).bind('reveal.disclaimer', function() { ...stuff to do after the box and contents are revealed... })
 *
 */
(function($) {
  $.disclaimer = function(data, klass, linktarget) {
    $.disclaimer.loading()
    if (data.ajax) fillDisclaimerFromAjax(data.ajax, klass, linktarget)
    else if (data.image) fillDisclaimerFromImage(data.image, klass, linktarget)
    else if (data.div) fillDisclaimerFromHref(data.div, klass, linktarget)
    else if ($.isFunction(data)) data.call($)
    else $.disclaimer.reveal(data, klass, linktarget)
  }

  $.extend($.disclaimer, {
    settings: {
      opacity      : 0.5,
      overlay      : true,
      loadingImage : '/modules/style/images/ajax-loader.gif',
      closeImage   : '/modules/style/images/closelabel.gif',
      imageTypes   : [ 'png', 'jpg', 'jpeg', 'gif' ],
      disclaimerHtml  : '\
            <div id="disclaimer" style="display:none;"> \
              <div class="popup"> \
                <div class="content"> \
                </div> \
              </div> \
            </div>'
    },

    loading: function() {
      init()
      if ($('#disclaimer .loading').length == 1) return true
      showOverlay()
      $('#disclaimer .content').empty()
      $('#disclaimer .content').children().hide().end().
        append('<div class="loading"><img src="'+$.disclaimer.settings.loadingImage+'"/></div>')
      $('#disclaimer').css({
        top:    getPageScroll()[1] + (getPageHeight() / 10),
        left:    $(window).width() / 2 - 205
      }).show()
      $(document).bind('keydown.disclaimer', function(e) {
        if (e.keyCode == 27) $.disclaimer.close()
        return true
      })
      $(document).trigger('loading.disclaimer')
    },

    reveal: function(data, klass, linktarget) {
      $(document).trigger('beforeReveal.disclaimer')
      if (klass) $('#disclaimer .content').addClass(klass)
      $('#disclaimer .content').append(data)
      $('#disclaimer .loading').remove()
      $('#disclaimer .body').children().fadeIn('normal')
      $('#disclaimer').css('left', $(window).width() / 2 - ($('#disclaimer').width() / 2))
      $("#disclaimerlink").attr('target', linktarget);
      $(document).trigger('reveal.disclaimer').trigger('afterReveal.disclaimer')
    },

    close: function() {
      $(document).trigger('close.disclaimer')
      return false
    }
  })

  $.fn.disclaimer = function(settings) {
    if ($(this).length == 0) return
    init(settings)
    function clickHandler() {
      $.disclaimer.loading(true)
      var klass = this.rel.match(/disclaimer\[?\.(\w+)\]?/)
      if (klass) klass = klass[1]
      fillDisclaimerFromHref(this.href, klass, this.target)
      return false
    }
    return this.bind('click.disclaimer', clickHandler)
  }

  function init(settings) {
    if ($.disclaimer.settings.inited) return true
    else $.disclaimer.settings.inited = true
    $(document).trigger('init.disclaimer')
    makeCompatible()
    var imageTypes = $.disclaimer.settings.imageTypes.join('|')
    $.disclaimer.settings.imageTypesRegexp = new RegExp('\.(' + imageTypes + ')$', 'i')
    if (settings) $.extend($.disclaimer.settings, settings)
    $('body').append($.disclaimer.settings.disclaimerHtml)
    var preload = [ new Image(), new Image() ]
    preload[0].src = $.disclaimer.settings.closeImage
    preload[1].src = $.disclaimer.settings.loadingImage
    $('#disclaimer .close').click($.disclaimer.close)
    $('#disclaimer .close_image').attr('src', $.disclaimer.settings.closeImage)
  }

  function getPageScroll() {
    var xScroll, yScroll;
    if (self.pageYOffset) {
      yScroll = self.pageYOffset;
      xScroll = self.pageXOffset;
    } else if (document.documentElement && document.documentElement.scrollTop) {     // Explorer 6 Strict
      yScroll = document.documentElement.scrollTop;
      xScroll = document.documentElement.scrollLeft;
    } else if (document.body) {// all other Explorers
      yScroll = document.body.scrollTop;
      xScroll = document.body.scrollLeft;
    }
    return new Array(xScroll,yScroll)
  }

  function getPageHeight() {
    var windowHeight
    if (self.innerHeight) {    // all except Explorer
      windowHeight = self.innerHeight;
    } else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
      windowHeight = document.documentElement.clientHeight;
    } else if (document.body) { // other Explorers
      windowHeight = document.body.clientHeight;
    }
    return windowHeight
  }

  function makeCompatible() {
    var $s = $.disclaimer.settings
    $s.loadingImage = $s.loading_image || $s.loadingImage
    $s.closeImage = $s.close_image || $s.closeImage
    $s.imageTypes = $s.image_types || $s.imageTypes
    $s.disclaimerHtml = $s.disclaimer_html || $s.disclaimerHtml
  }

  function fillDisclaimerFromHref(href, klass, linktarget) {
    if (href.match(/#/)) {
      var url    = window.location.href.split('#')[0]
      var target = href.replace(url,'')
      if (target == '#') return
      $.disclaimer.reveal($(target).html(), klass, linktarget)
    } else if (href.match($.disclaimer.settings.imageTypesRegexp)) {
      fillDisclaimerFromImage(href, klass, linktarget)
    } else {
      fillDisclaimerFromAjax(href + '&ajax=1', klass, linktarget)
    }
  }

  function fillDisclaimerFromImage(href, klass, linktarget) {
    var image = new Image()
    image.onload = function() {
      $.disclaimer.reveal('<div class="image"><img src="' + image.src + '" /></div>', klass, linktarget)
    }
    image.src = href
  }

  function fillDisclaimerFromAjax(href, klass, linktarget) {
    $.get(href, function(data) { $.disclaimer.reveal(data, klass, linktarget) })
  }

  function skipOverlay() {
    return $.disclaimer.settings.overlay == false || $.disclaimer.settings.opacity === null
  }

  function showOverlay() {
    if (skipOverlay()) return

    if ($('#disclaimer_overlay').length == 0)
      $("body").append('<div id="disclaimer_overlay" class="disclaimer_hide"></div>')

    $('#disclaimer_overlay').hide().addClass("disclaimer_overlayBG")
      .css('opacity', $.disclaimer.settings.opacity)
      .click(function() { $(document).trigger('close.disclaimer') })
      .fadeIn(200)
    return false
  }

  function hideOverlay() {
    if (skipOverlay()) return
    $('#disclaimer_overlay').fadeOut(200, function(){
      $("#disclaimer_overlay").removeClass("disclaimer_overlayBG")
      $("#disclaimer_overlay").addClass("disclaimer_hide")
      $("#disclaimer_overlay").remove()
    })
    return false
  }

  $(document).bind('close.disclaimer', function() {
    $(document).unbind('keydown.disclaimer')
    $('#disclaimer').fadeOut(function() {
      $('#disclaimer .content').removeClass().addClass('content')
      hideOverlay()
      $('#disclaimer .loading').remove()
      $(document).trigger('afterClose.disclaimer')
    })
  })

})(jQuery);

jQuery(document).ready(function() {
    jQuery('a[rel*=showdisclaimer]').disclaimer()
})