// $Id: thickbox.js,v 1.2.4.6 2008/11/06 18:53:48 frjo Exp $

/*
 * Thickbox 3 - One Box To Rule Them All.
 * By Cody Lindley (http://www.codylindley.com)
 * Copyright (c) 2007 cody lindley
 * Licensed under the MIT License: http://www.opensource.org/licenses/mit-license.php
*/


if (Drupal.jsEnabled) {
  //on page load call tb_init
  $(document).ready(function(){
    tb_init('a.thickbox, area.thickbox, input.thickbox');//pass where to apply thickbox
    imgLoader = new Image();// preload image
  });
}

//add thickbox to href & area elements that have a class of .thickbox
function tb_init(domChunk) {
  $(domChunk).click(function() {
    var t = this.title || this.name || null;
    var a = this.href || this.alt;
    var g = this.rel || false;
    tb_show(t,a,g);
    this.blur();
    return false;
  });
}

function tb_show(caption, url, imageGroup) { //function called when the user clicks on a thickbox link

  var settings = Drupal.settings.thickbox;

  try {
    if (typeof document.body.style.maxHeight === 'undefined') { //if IE 6
      $('body','html').css({height: '100%', width: '100%'});
      $('html').css('overflow','hidden');
      if (document.getElementById('TB_HideSelect') === null) { //iframe to hide select elements in ie6
        $('body').append('<iframe id="TB_HideSelect"></iframe><div id="TB_overlay"></div><div id="TB_window"></div>');
        $('#TB_overlay').click(tb_remove);
      }
    }
    else { //all others
      if (document.getElementById('TB_overlay') === null) {
        $('body').append('<div id="TB_overlay"></div><div id="TB_window"></div>');
        $('#TB_overlay').click(tb_remove);
      }
    }

    if (tb_detectMacXFF()) {
      $('#TB_overlay').addClass('TB_overlayMacFFBGHack'); //use png overlay so hide flash
    }
    else {
      $('#TB_overlay').addClass('TB_overlayBG'); //use background and opacity
    }

    if (caption===null) {caption='';}
    $('body').append('<div id="TB_load"></div>'); //add loader to the page
    $('#TB_load').show(); //show loader

    var baseURL;
    if (url.indexOf('?')!==-1) { //ff there is a query string involved
      baseURL = url.substr(0, url.indexOf('?'));
    }
    else {
      baseURL = url;
    }

    var urlString = /\.jpg$|\.jpeg$|\.png$|\.gif$|\.bmp$/;
    var urlType = baseURL.toLowerCase().match(urlString);

    if (urlType == '.jpg' || urlType == '.jpeg' || urlType == '.png' || urlType == '.gif' || urlType == '.bmp') { //code to show images
      TB_PrevCaption = '';
      TB_PrevURL = '';
      TB_PrevHTML = '';
      TB_NextCaption = '';
      TB_NextURL = '';
      TB_NextHTML = '';
      TB_imageCount = '';
      TB_FoundURL = false;
      if (imageGroup) {
        TB_TempArray = $('a[@rel=' + imageGroup + ']').get();
        for (TB_Counter = 0; ((TB_Counter < TB_TempArray.length) && (TB_NextHTML === '')); TB_Counter++) {
          var urlTypeTemp = TB_TempArray[TB_Counter].href.toLowerCase().match(urlString);
          if (!(TB_TempArray[TB_Counter].href == url)) {
            if (TB_FoundURL) {
              TB_NextCaption = TB_TempArray[TB_Counter].title;
              TB_NextURL = TB_TempArray[TB_Counter].href;
              TB_NextHTML = '<span id="TB_next">&nbsp;&nbsp;<a href="#">' + settings.next + '</a></span>';
            }
            else {
              TB_PrevCaption = TB_TempArray[TB_Counter].title;
              TB_PrevURL = TB_TempArray[TB_Counter].href;
              TB_PrevHTML = '<span id="TB_prev">&nbsp;&nbsp;<a href="#">' + settings.prev + '</a></span>';
            }
          }
          else {
            TB_FoundURL = true;
            TB_imageCount = settings.image_count.replace(/\!current/, (TB_Counter + 1)).replace(/\!total/, TB_TempArray.length);
          }
        }
      }

      // Modified to preload previous and next image.
      imgPreloader = new Image();
      prevImg = new Image();
      nextImg = new Image();
      imgPreloader.onload = function() {
        imgPreloader.onload = null;

        var tb_links = $('a[@class="thickbox"]');
        var i = -1;
        tb_links.each(function(n) { if (this.href == imgPreloader.src) { i = n; } });
        if (i != -1) {
          if (i > 0) { prevImg.src = tb_links[i-1].href; }
          if (i+1 < tb_links.length) { nextImg.src = tb_links[i+1].href; }
        }

        // Resizing large images - orginal by Christian Montoya edited by me.
        var pagesize = tb_getPageSize();
        var x = pagesize[0] - 100;
        var y = pagesize[1] - 100;
        var imageWidth = imgPreloader.width;
        var imageHeight = imgPreloader.height;
        if (imageWidth > x) {
          imageHeight = imageHeight * (x / imageWidth);
          imageWidth = x;
          if (imageHeight > y) {
            imageWidth = imageWidth * (y / imageHeight);
            imageHeight = y;
          }
        }
        else if (imageHeight > y) {
          imageWidth = imageWidth * (y / imageHeight);
          imageHeight = y;
          if (imageWidth > x) {
            imageHeight = imageHeight * (x / imageWidth);
            imageWidth = x;
          }
        }
        // End Resizing

        TB_WIDTH = imageWidth < 320 ? 350 : imageWidth + 30;
        TB_HEIGHT = imageHeight + 60;


        //$('#TB_window').append('<a href="" id="TB_ImageOff" title="' + settings.next_close + '"><img id="TB_Image" src="' + url + '" width="' + imageWidth + '" height="' + imageHeight + '" alt="' + caption + '" /></a><div id="TB_caption">' + caption + '<div>This image is protected by copyright law.  All rights reserved &copy; ODT Online 2008</div><div id="TB_secondLine">' + TB_imageCount + TB_PrevHTML + TB_NextHTML + '</div></div><div id="TB_closeWindow"><a href="#" id="TB_closeWindowButton" title="' + settings.close + '">' + settings.close + '</a> ' + settings.esc_key + '</div>');
        $('#TB_window').append('<a href="" id="TB_ImageOff" title="' + settings.next_close + '"><img id="TB_Image" src="' + url + '" width="' + imageWidth + '" height="' + imageHeight + '" alt="' + caption + '" /></a><div id="TB_caption">' + caption + '<div id="TB_copyright">Copyright &copy; All Rights Reserved</div><div id="TB_secondLine">' + TB_imageCount + TB_PrevHTML + TB_NextHTML + '</div></div><div id="TB_closeWindow"><a href="#" id="TB_closeWindowButton" title="' + settings.close + '">' + settings.close + '</a></div>');
        $('#TB_closeWindowButton').click(tb_remove);

        /* added by stuart mcdonald 2008-11-10 because Allied Press don't want their images saved */
        var message="You are not permitted to download, save or email this image. Visit www.otagoimages.co.nz to purchase a copy.";

        $("#TB_Image").bind("contextmenu",function(e) {
            alert(message);
            return false;
        });

        /* end of bit added by stuart mcdonald */
        if (!(TB_PrevHTML === '')) {
          function goPrev() {
            if ($(document).unbind('click',goPrev)) {$(document).unbind('click',goPrev);}
            $('#TB_window').remove();
            $('body').append('<div id="TB_window"></div>');
            tb_show(TB_PrevCaption, TB_PrevURL, imageGroup);
            return false;
          }
          $('#TB_prev').click(goPrev);
        }

        if (!(TB_NextHTML === '')) {
          function goNext() {
            $('#TB_window').remove();
            $('body').append('<div id="TB_window"></div>');
            tb_show(TB_NextCaption, TB_NextURL, imageGroup);
            return false;
          }
          $('#TB_next').click(goNext);
          $('#TB_ImageOff').click(goNext);
        }
        else {
          $('#TB_ImageOff').click(tb_remove);
        }

        document.onkeydown = function(e) {
          if (e == null) { // ie
            keycode = event.keyCode;
            escapeKey = 27;
          }
          else if ($.browser.safari) { // safari
            keycode = e.which;
            escapeKey = 27;
          }
          else { // mozilla
            keycode = e.keyCode;
            escapeKey = e.DOM_VK_ESCAPE;
          }
          key = String.fromCharCode(keycode).toLowerCase();
          if (key == 'x' || key == 'c' || keycode == escapeKey) { // close
            tb_remove();
          }
          else if (key == 'n' || keycode == 39) { // display previous image
            if (!(TB_NextHTML == '')) {
              document.onkeydown = '';
              goNext();
            }
          }
          else if (key == 'p' || keycode == 37) { // display next image
            if (!(TB_PrevHTML == '')) {
              document.onkeydown = '';
              goPrev();
            }
          }
        };

        tb_position();
        $('#TB_load').remove();
        $('#TB_window').css({display:'block', opacity: 0}).animate({opacity: 1}, 400); //for safari using css instead of show
      };

      imgPreloader.src = url;
    }
    else { //code to show html

      var queryString = url.replace(/^[^\?]+\??/,'');
      var params = tb_parseQuery( queryString );

      TB_WIDTH = (params['width']*1) + 30 || 630; //defaults to 630 if no paramaters were added to URL
      TB_HEIGHT = (params['height']*1) + 40 || 440; //defaults to 440 if no paramaters were added to URL
      ajaxContentW = TB_WIDTH - 30;
      ajaxContentH = TB_HEIGHT - 45;

      if (url.indexOf('TB_iframe') != -1) { // either iframe or ajax window
        urlNoQuery = url.split('TB_');
        $('#TB_window').append('<div id="TB_title"><div id="TB_ajaxWindowTitle">' + caption + '</div><div id="TB_closeAjaxWindow"><a href="#" id="TB_closeWindowButton" title="' + settings.close + '">' + settings.close + '</a> ' + settings.esc_key + '</div></div><iframe frameborder="0" hspace="0" src="' + urlNoQuery[0] + '" id="TB_iframeContent" name="TB_iframeContent' + Math.round(Math.random()*1000) + '" onload="tb_showIframe()" style="width:' + (ajaxContentW + 29) + 'px;height:' + (ajaxContentH + 17) + 'px;"></iframe>');
      }
      else { // not an iframe, ajax
        if ($('#TB_window').css('display') != 'block') {
          if (params['modal'] != 'true') { //ajax no modal
            $('#TB_window').append('<div id="TB_title"><div id="TB_ajaxWindowTitle">' + caption + '</div><div id="TB_closeAjaxWindow"><a href="#" id="TB_closeWindowButton">close</a> or Esc Key</div></div><div id="TB_ajaxContent" style="width:' + ajaxContentW + 'px;height:' + ajaxContentH + 'px"></div>');
          }
          else { //ajax modal
            $('#TB_overlay').unbind();
            $('#TB_window').append('<div id="TB_ajaxContent" class="TB_modal" style="width:' + ajaxContentW + 'px;height:' + ajaxContentH + 'px;"></div>');
          }
        }
        else { //this means the window is already up, we are just loading new content via ajax
          $('#TB_ajaxContent')[0].style.width = ajaxContentW + 'px';
          $('#TB_ajaxContent')[0].style.height = ajaxContentH + 'px';
          $('#TB_ajaxContent')[0].scrollTop = 0;
          $('#TB_ajaxWindowTitle').html(caption);
        }
      }

      $('#TB_closeWindowButton').click(tb_remove);

      if (url.indexOf('TB_inline') != -1) {
        $('#TB_ajaxContent').html($('#' + params['inlineId']).html());
        tb_position();
        $('#TB_load').remove();
        $('#TB_window').css({display:'block', opacity: 0}).animate({opacity: 1}, 400);
      }
      else if (url.indexOf('TB_iframe') != -1) {
        tb_position();
        if ($.browser.safari) { //safari needs help because it will not fire iframe onload
          $('#TB_load').remove();
          $('#TB_window').css({display:'block', opacity: 0}).animate({opacity: 1}, 400);
        }
      }
      else {
        $('#TB_ajaxContent').load(url += '&random=' + (new Date().getTime()),function() { //to do a post change this load method
          tb_position();
          $('#TB_load').remove();
          tb_init('#TB_ajaxContent a.thickbox');
          $('#TB_window').css({display:'block', opacity: 0}).animate({opacity: 1}, 400);
        });
      }
    }

    if (!params['modal']) {
      document.onkeyup = function(e) {
        if (e == null) { // ie
          keycode = event.keyCode;
          escapeKey = 27;
        }
        else if ($.browser.safari) { // safari
          keycode = e.which;
          escapeKey = 27;
        }
        else { // mozilla
          keycode = e.keyCode;
          escapeKey = e.DOM_VK_ESCAPE;
        }
        key = String.fromCharCode(keycode).toLowerCase();
        if (keycode == escapeKey) { // close
          tb_remove();
        }
      };
    }

  }
  catch(e) {
    //nothing here
  }
}

//helper functions below
function tb_showIframe() {
  $('#TB_load').remove();
  $('#TB_window').css({display:'block', opacity: 0}).animate({opacity: 1}, 400);
}

function tb_remove() {
  $('#TB_imageOff').unbind('click');
  $('#TB_overlay').unbind('click');
  $('#TB_closeWindowButton').unbind('click');
  $('#TB_window').fadeOut(400,function() {$('#TB_window,#TB_overlay,#TB_HideSelect').trigger('unload').unbind().remove();});
  $('#TB_load').remove();
  if (typeof document.body.style.maxHeight == 'undefined') { //if IE 6
    $('body','html').css({height: 'auto', width: 'auto'});
    $('html').css('overflow','');
  }
  document.onkeydown = '';
  document.onkeyup = '';
  return false;
}

function tb_position() {
  $('#TB_window').css({marginLeft: '-' + parseInt((TB_WIDTH / 2),10) + 'px', width: TB_WIDTH + 'px'});
  //if ( !(jQuery.browser.msie && typeof XMLHttpRequest == 'function')) { // take away IE6
  // fixes the fact that ie7 now reports itself as MSIE 6.0 compatible
  if (!(jQuery.browser.msie && /MSIE 6\.0/i.test(window.navigator.userAgent) && !/MSIE 7\.0/i.test(window.navigator.userAgent))) { // take away IE6
    $('#TB_window').css({marginTop: '-' + parseInt((TB_HEIGHT / 2),10) + 'px'});
  }
}

function tb_parseQuery ( query ) {
  var Params = {};
  if ( ! query ) {return Params;}// return empty object
  var Pairs = query.split(/[;&]/);
  for ( var i = 0; i < Pairs.length; i++ ) {
    var KeyVal = Pairs[i].split('=');
    if ( ! KeyVal || KeyVal.length != 2 ) {continue;}
    var key = unescape( KeyVal[0] );
    var val = unescape( KeyVal[1] );
    val = val.replace(/\+/g, ' ');
    Params[key] = val;
  }
  return Params;
}

function tb_getPageSize() {
  var de = document.documentElement;
  var w = window.innerWidth || self.innerWidth || (de&&de.clientWidth) || document.body.clientWidth;
  var h = window.innerHeight || self.innerHeight || (de&&de.clientHeight) || document.body.clientHeight;
  arrayPageSize = [w,h];
  return arrayPageSize;
}

function tb_detectMacXFF() {
  var userAgent = navigator.userAgent.toLowerCase();
  if (userAgent.indexOf('mac') != -1 && userAgent.indexOf('firefox') != -1) {
    return true;
  }
}