/**
 * jQuery lightBox plugin
 * This jQuery plugin was inspired and based on Lightbox 2 by Lokesh Dhakar (http://www.huddletogether.com/projects/lightbox2/)
 * and adapted to me for use like a plugin from jQuery.
 * @name jquery-lightbox-0.5.js
 * @author Leandro Vieira Pinho - http://leandrovieira.com
 * @version 0.5
 * @date April 11, 2008
 * @category jQuery plugin
 * @copyright (c) 2008 Leandro Vieira Pinho (leandrovieira.com)
 * @license CC Attribution-No Derivative Works 2.5 Brazil - http://creativecommons.org/licenses/by-nd/2.5/br/deed.en_US
 * @example Visit http://leandrovieira.com/projects/jquery/lightbox/ for more informations about this jQuery plugin
 */
(function($){
  $.fn.lightBox=function(settings){
    settings=jQuery.extend({
      startHook: function(){},
      finishHook: function(){},
      overlayBgColor:'#000',
      overlayOpacity:0.8,
      fixedNavigation:false,
      imageLoading:'/web/images/lightbox/lightbox-ico-loading.gif',
      imageBtnPrev:'/web/images/lightbox/lightbox-btn-prev.gif',
      imageBtnNext:'/web/images/lightbox/lightbox-btn-next.gif',
      imageBtnClose:'/web/images/lightbox/lightbox-btn-close.gif',
      imageBlank:'/web/images/lightbox/lightbox-blank.gif',
      containerBorderSize:10,
      containerResizeSpeed:400,
      txtImage:'Image',
      txtOf:'of',
      keyToClose:'c',
      keyToPrev:'p',
      keyToNext:'n',
      imageArray:[],
      activeImage:0
    },settings);

    var jQueryMatchedObj=this;
    
    function _initialize(){
      _start(this,jQueryMatchedObj);
      return false;
    }
    
    function _start(objClicked,jQueryMatchedObj){
      settings.startHook();
      $('embed, object, select').css({'visibility':'hidden'});
      _set_interface();
      settings.imageArray.length=0;
      settings.activeImage=0;
      if(jQueryMatchedObj.length==1){
        settings.imageArray.push(new Array(objClicked.getAttribute('href'),objClicked.getAttribute('title')));
      }else{
        for(var i=0;i<jQueryMatchedObj.length;i++){
          settings.imageArray.push(new Array(jQueryMatchedObj[i].getAttribute('href'),jQueryMatchedObj[i].getAttribute('title')));
      }
    }

    while(settings.imageArray[settings.activeImage][0]!=objClicked.getAttribute('href')){
      settings.activeImage++;
    }
    _set_image_to_view();
  }

  function _set_interface(){
    $('body').append([
        '<div id="jquery-overlay"></div>',
        '<div id="jquery-lightbox">',
          '<div id="lightbox-container-image-box">',
            '<div id="lightbox-container-image">',
              '<img id="lightbox-image">',
              '<div style="" id="lightbox-nav">',
                '<a href="#" id="lightbox-nav-btnPrev"></a>',
                '<a href="#" id="lightbox-nav-btnNext"></a>',
              '</div>',
              '<div id="lightbox-loading">',
                '<a href="#" id="lightbox-loading-link"><img src="', settings.imageLoading, '"></a>',
              '</div>',
            '</div>',
          '</div>',
          '<div id="lightbox-container-image-data-box">',
            '<div id="lightbox-container-image-data">',
              '<div id="lightbox-image-details">',
                '<span id="lightbox-image-details-caption"></span>',
                '<span id="lightbox-image-details-currentNumber"></span>',
              '</div>',
              '<div id="lightbox-secNav">',
                '<a href="#" id="lightbox-secNav-btnClose"><img src="', settings.imageBtnClose, '"></a>',
              '</div>',
            '</div>',
          '</div>',
        '</div>'
    ].join(''));
    var arrPageSizes=___getPageSize();
    $('#jquery-overlay').css({
        backgroundColor:settings.overlayBgColor,
        opacity:settings.overlayOpacity,
        width:arrPageSizes[0],
        height:arrPageSizes[1]
    }).fadeIn();
    
    var arrPageScroll=___getPageScroll();
    $('#jquery-lightbox').css({top:arrPageScroll[1]+(arrPageSizes[3]/10)-20,left:arrPageScroll[0]}).show();
    $('#jquery-overlay,#jquery-lightbox').click(function(){_finish();});
    $('#lightbox-loading-link,#lightbox-secNav-btnClose').click(function(){
      _finish();return false;
    });

//for fxxkin ie @20100318
    if($.browser.msie){
      $('#jquery-overlay').width(document.body.scrollWidth);
    }

    $(window).resize(function(){
      var arrPageSizes=___getPageSize();$('#jquery-overlay').css({width:arrPageSizes[0],height:arrPageSizes[1]});
      var arrPageScroll=___getPageScroll();$('#jquery-lightbox').css({top:arrPageScroll[1]+(arrPageSizes[3]/10)-20,left:arrPageScroll[0]});
    });
  }

  function _set_image_to_view(){
    $('#lightbox-loading').show();
    if(settings.fixedNavigation){
      $('#lightbox-image,#lightbox-container-image-data-box,#lightbox-image-details-currentNumber').hide();
    }else{
      $('#lightbox-image,#lightbox-nav,#lightbox-nav-btnPrev,#lightbox-nav-btnNext,#lightbox-container-image-data-box,#lightbox-image-details-currentNumber').hide();
    }
    
    var objImagePreloader=new Image();
    objImagePreloader.onload=function(){
      $('#lightbox-image').attr('src',settings.imageArray[settings.activeImage][0]);
      _resize_container_image_box(objImagePreloader.width,objImagePreloader.height);
      objImagePreloader.onload=function(){};
    };
    
    objImagePreloader.src=settings.imageArray[settings.activeImage][0];
  };
  
  function _resize_container_image_box(intImageWidth,intImageHeight){
    var intCurrentWidth=$('#lightbox-container-image-box').width();
    var intCurrentHeight=$('#lightbox-container-image-box').height();
    var intWidth=(intImageWidth+(settings.containerBorderSize*2));
    var intHeight=(intImageHeight+(settings.containerBorderSize*2));
    var intDiffW=intCurrentWidth-intWidth;
    var intDiffH=intCurrentHeight-intHeight;
    $('#lightbox-container-image-box').animate({width:intWidth,height:intHeight},settings.containerResizeSpeed,function(){
      _show_image();
    });
    
    if((intDiffW==0)&&(intDiffH==0)){
      if($.browser.msie){
        ___pause(250);
      }else{___pause(100);}
    }

    $('#lightbox-container-image-data-box').css({width:intImageWidth});
    $('#lightbox-nav-btnPrev,#lightbox-nav-btnNext').css({height:intImageHeight+(settings.containerBorderSize*2)});
  };

  function _show_image(){
    $('#lightbox-loading').hide();
    $('#lightbox-image').fadeIn(function(){_show_image_data();_set_navigation();});
    _preload_neighbor_images();
  };
  
  function _show_image_data(){
    $('#lightbox-container-image-data-box').slideDown('fast');
    $('#lightbox-image-details-caption').hide();
    if(settings.imageArray[settings.activeImage][1]){
      $('#lightbox-image-details-caption').html(settings.imageArray[settings.activeImage][1]).show();
    }
    
    if(settings.imageArray.length>1){
      $('#lightbox-image-details-currentNumber').html(settings.txtImage+' '+(settings.activeImage+1)+' '+settings.txtOf+' '+settings.imageArray.length).show();
    }
  }
  
  function _set_navigation(){
    $('#lightbox-nav').show();$('#lightbox-nav-btnPrev,#lightbox-nav-btnNext').css({
      'background':'transparent url('+settings.imageBlank+') no-repeat'
    });
    
    if(settings.activeImage!=0){
      if(settings.fixedNavigation){
        $('#lightbox-nav-btnPrev').css({'background':'url('+settings.imageBtnPrev+') left 15% no-repeat'}).unbind().bind('click',function(){settings.activeImage=settings.activeImage-1;_set_image_to_view();return false;});
      }else{
        $('#lightbox-nav-btnPrev').unbind().hover(function(){$(this).css({'background':'url('+settings.imageBtnPrev+') left 15% no-repeat'});},function(){$(this).css({'background':'transparent url('+settings.imageBlank+') no-repeat'});}).show().bind('click',function(){settings.activeImage=settings.activeImage-1;_set_image_to_view();return false;});
      }
    }
    
    if(settings.activeImage!=(settings.imageArray.length-1)){
      if(settings.fixedNavigation){
        $('#lightbox-nav-btnNext').css({'background':'url('+settings.imageBtnNext+') right 15% no-repeat'}).unbind().bind('click',function(){settings.activeImage=settings.activeImage+1;_set_image_to_view();return false;});
      }else{
        $('#lightbox-nav-btnNext').unbind().hover(function(){$(this).css({'background':'url('+settings.imageBtnNext+') right 15% no-repeat'});},function(){$(this).css({'background':'transparent url('+settings.imageBlank+') no-repeat'});}).show().bind('click',function(){settings.activeImage=settings.activeImage+1;_set_image_to_view();return false;});
      }
    }
    
    _enable_keyboard_navigation();
  }
  
  function _enable_keyboard_navigation(){$(document).keydown(function(objEvent){_keyboard_action(objEvent);});}
  function _disable_keyboard_navigation(){$(document).unbind();}
  function _keyboard_action(objEvent){
    if(objEvent==null){
      keycode=event.keyCode;escapeKey=27;
    }else{
      keycode=objEvent.keyCode;escapeKey=objEvent.DOM_VK_ESCAPE;
    }
    
    key=String.fromCharCode(keycode).toLowerCase();
    if((key==settings.keyToClose)||(key=='x')||(keycode==escapeKey)){_finish();}
    if((key==settings.keyToPrev)||(keycode==37)){
      if(settings.activeImage!=0){
        settings.activeImage=settings.activeImage-1;_set_image_to_view();_disable_keyboard_navigation();
      }
    }

    if((key==settings.keyToNext)||(keycode==39)){
      if(settings.activeImage!=(settings.imageArray.length-1)){
        settings.activeImage=settings.activeImage+1;_set_image_to_view();_disable_keyboard_navigation();
      }
    }
  }

  function _preload_neighbor_images(){
    if((settings.imageArray.length-1)>settings.activeImage){
      objNext=new Image();objNext.src=settings.imageArray[settings.activeImage+1][0];
    }
    
    if(settings.activeImage>0){
      objPrev=new Image();objPrev.src=settings.imageArray[settings.activeImage-1][0];
    }
  }

  function _finish(){
    $('#jquery-lightbox').remove();$('#jquery-overlay').fadeOut(function(){$('#jquery-overlay').remove();});
    $('embed, object, select').css({'visibility':'visible'});
    settings.finishHook();
  }

  function ___getPageSize(){
    var xScroll,yScroll;
    if(window.innerHeight&&window.scrollMaxY){
      xScroll=window.innerWidth+window.scrollMaxX;yScroll=window.innerHeight+window.scrollMaxY;
    }else if(document.body.scrollHeight>document.body.offsetHeight){
      xScroll=document.body.scrollWidth;yScroll=document.body.scrollHeight;
    }else{
      xScroll=document.body.offsetWidth;yScroll=document.body.offsetHeight;
    }
  
    var windowWidth,windowHeight;
    if(self.innerHeight){
      if(document.documentElement.clientWidth){
        windowWidth=document.documentElement.clientWidth;
      }else{
        windowWidth=self.innerWidth;
      }
      windowHeight=self.innerHeight;
    }else if(document.documentElement&&document.documentElement.clientHeight){
      windowWidth=document.documentElement.clientWidth;windowHeight=document.documentElement.clientHeight;
    }else if(document.body){
      windowWidth=document.body.clientWidth;windowHeight=document.body.clientHeight;
    }
    
    if(yScroll<windowHeight){
      pageHeight=windowHeight;
    }else{
      pageHeight=yScroll;
    }

    if(xScroll<windowWidth){
      pageWidth=xScroll;
    }else{
      pageWidth=windowWidth;
    }
    
    arrayPageSize=new Array(pageWidth,pageHeight,windowWidth,windowHeight);
    return arrayPageSize;
  };
  
  function ___getPageScroll(){
    var xScroll,yScroll;
    if(self.pageYOffset){
      yScroll=self.pageYOffset;xScroll=self.pageXOffset;
    }else if(document.documentElement&&document.documentElement.scrollTop){
      yScroll=document.documentElement.scrollTop;xScroll=document.documentElement.scrollLeft;
    }else if(document.body){
      yScroll=document.body.scrollTop;xScroll=document.body.scrollLeft;
    }
    
    arrayPageScroll=new Array(xScroll,yScroll);
    return arrayPageScroll;
  };
  
  function ___pause(ms){
    var date=new Date();
    curDate=null;
    do{
      var curDate=new Date();
    }
    while(curDate-date<ms);
  };
  
  return this.unbind('click').click(_initialize);
};})(jQuery);