/*
Created By: Chris Campbell
Website: http://particletree.com
Date: 2/1/2006

Inspired by the lightbox implementation found at http://www.huddletogether.com/projects/lightbox/
*/

/*-------------------------------GLOBAL VARIABLES------------------------------------*/

var detect = navigator.userAgent.toLowerCase();
var OS,browser,version,total,thestring;

/*-----------------------------------------------------------------------------------------------*/

//Browser detect script origionally created by Peter Paul Koch at http://www.quirksmode.org/

function getBrowserInfo() {
	if (checkIt('konqueror')) {
		browser = "Konqueror";
		OS = "Linux";
	}
	else if (checkIt('safari')) browser 	= "Safari"
	else if (checkIt('omniweb')) browser 	= "OmniWeb"
	else if (checkIt('opera')) browser 		= "Opera"
	else if (checkIt('webtv')) browser 		= "WebTV";
	else if (checkIt('icab')) browser 		= "iCab"
	else if (checkIt('msie')) browser 		= "Internet Explorer"
	else if (!checkIt('compatible')) {
		browser = "Netscape Navigator"
		version = detect.charAt(8);
	}
	else browser = "An unknown browser";

	if (!version) version = detect.charAt(place + thestring.length);

	if (!OS) {
		if (checkIt('linux')) OS 		= "Linux";
		else if (checkIt('x11')) OS 	= "Unix";
		else if (checkIt('mac')) OS 	= "Mac"
		else if (checkIt('win')) OS 	= "Windows"
		else OS 								= "an unknown operating system";
	}
}

function checkIt(string) {
	place = detect.indexOf(string) + 1;
	thestring = string;
	return place;
}

/*-----------------------------------------------------------------------------------------------*/

Event.observe(window, 'load', lbInitialize, false);
Event.observe(window, 'load', getBrowserInfo, false);

var lightbox = Class.create();

lightbox.prototype = {

	yPos : 0,
	xPos : 0,

	initialize: function(ctrl, url) {
	  if (ctrl) {
	    this.content = ctrl.href;
  		ctrl.observe('click', this.activate.bindAsEventListener(this), false);
	  } else if (url) {
	    this.content = url;
	  };
	},
	
	// Turn everything on - mainly the IE fixes
	activate: function(event){
	  if (event) {Event.stop(event)};
		if (Prototype.Browser.IE){
			this.getScroll();   
			this.prepareIE('100%', 'hidden');
			this.setScroll(0,0);
			this.hideSelects('hidden');
		}
		this.hideFlash('none');
		this.displayLightbox("block");
	},
	
	// Ie requires height to 100% and overflow hidden or else you can scroll down past the lightbox
	prepareIE: function(height, overflow){
    $$('body, html').invoke('setStyle', { 'height' : height, 'overflow' : overflow });
	},
	
	// In IE, select elements hover on top of the lightbox
	hideSelects: function(visibility){
		$$('select').invoke('setStyle', { 'visibility' : visibility });
	},
	
	// Hide widget flash because it breaks the overlay on some browsers
	hideFlash: function(display){
		$('widget_preview').setStyle({ 'display' : display });
	},
	
	// Taken from lightbox implementation found at http://www.huddletogether.com/projects/lightbox/
	getScroll: function(){
		if (self.pageYOffset) {
			this.yPos = self.pageYOffset;
		} else if (document.documentElement && document.documentElement.scrollTop){
			this.yPos = document.documentElement.scrollTop; 
		} else if (document.body) {
			this.yPos = document.body.scrollTop;
		}
	},
	
	setScroll: function(x, y){
		window.scrollTo(x, y); 
	},
	
	displayLightbox: function(display){
    switch(display){
      case 'block':
        $$('#overlay, #lightbox').invoke('setStyle',{display:'block'});
        break;
      case 'none':
        new Effect.Fade($('overlay'),{duration:0.2});
        $('lightbox').hide();
        break;
      default:
        $$('#overlay, #lightbox').invoke('setStyle',{display:display});
    }
		if (display != 'none') this.loadInfo();
    // For now we don't want folks being able to click out of the lightbox.
    // $('overlay').observe('click',this.deactivate.bindAsEventListener(this));
	},
	
	// Begin Ajax request based off of the href of the clicked linked
	loadInfo: function() {
		var myAjax = new Ajax.Request(this.content, {
		  method: 'get', 
		  parameters: "", 
		  onComplete: this.processInfo.bindAsEventListener(this)
		});
	},
	
	// Display Ajax response
	processInfo: function(response){
	  var div = document.createElement('div');
	  Element.extend(div);
	  div.setAttribute('id', 'lbContent');
	  div.update(response.responseText);
    $('lightbox').appendChild(div);
		$('lightbox').addClassName('done').removeClassName('loading');
		this.actions();
	},
	
	// Search through new links within the lightbox, and attach click event
	actions: function(){
	  $$('.deactivate').each(function(deactivate_lnk) {
	    deactivate_lnk.observe('click', this.deactivate.bindAsEventListener(this));
	  }.bind(this));
	  
	  $$('#resend-verification-control').each(function(resend_lnk) {
	    resend_lnk.observe('click', this.resend_verification.bindAsEventListener(this));
	  }.bind(this));
	  
	  $$('a[rel=external]').each(function(external_link) {
	    external_link.observe('click', function(event){
	      event.stop();
        window.open(event.element().readAttribute('href'), '_blank', '');
	    })
	  })
	},
	
	// Example of creating your own functionality once lightbox is initiated
	deactivate: function(event){
	  Event.stop(event);
	  
		Element.remove($('lbContent'));
		
		if (browser == "Internet Explorer"){
			this.setScroll(0,this.yPos);
			this.prepareIE("auto", "auto");
			this.hideSelects("visible");
		}
		this.hideFlash("");
		this.displayLightbox("none");
	},
	resend_verification: function(event) {
	  Event.stop(event);

    var url = event.element().readAttribute('href');
    
    new Ajax.Request(url, {
      method: 'get',
      onFailure: function() {
        alert("Failure.");
      }
    });
	}
}

/*-----------------------------------------------------------------------------------------------*/

// Onload, make all links that need to trigger a lightbox active
function lbInitialize(){
	addLightboxMarkup();
  
  $$('.lbOn').each(function(lbox) {
    var newLb = new lightbox(lbox);
  });
}

// Add in markup necessary to make this work. Basically two divs:
// Overlay holds the shadow
// Lightbox is the centered square that the content is put into.
function addLightboxMarkup() {
  if ($('overlay') || $('lightbox') || $('lbLoadMessage')) return false;
  
  var overlay = document.createElement('div');
  overlay.setAttribute('id', 'overlay');
  
  var lb = document.createElement('div');
  lb.setAttribute('id', 'lightbox');
  lb.setAttribute('class', 'loading');
  
  var lbMessageDiv = document.createElement('div');
  lbMessageDiv.setAttribute('id', 'lbLoadMessage');
  
  var lbMessage = document.createElement('p');
  // lbMessage.update("");
  
  lbMessageDiv.appendChild(lbMessage);
  lb.appendChild(lbMessageDiv);
  $$('body').first().appendChild(overlay);
  $$('body').first().appendChild(lb);
  
  // 
  // $$('body').first().insert(
  //   new Element('div', { 'id' : 'overlay' })
  // ).insert(new Element('div', { 
  //  'id' : 'lightbox',
  //  'class' : 'loading'
  // }).insert(new Element('div', { 
  //  'id' : 'lbLoadMessage' 
  //  }).insert(new Element('p').update("Loading")))
  // );
}