/*    4/01/2009
		PikaChoose
	Jquery plugin for photo galleries
    Copyright (C) 2009 Jeremy Fry

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

/* thanks to Antonio Terceiro for suggestion and implementation of the multi lang support*/
jQuery.iPikaChoose = {
	build : function(user_options)
	{
		var user_options;
		var defaults = {
			show_captions: true,
			slide_enabled: true,
			auto_play: true,
			show_prev_next: false,
			slide_speed: 5000,
			thumb_width: 50,
			thumb_height: 42,
			buttons_text: {previous: "Previous", next: "Next" },
			delay_caption: true,
			user_thumbs: true
		};

		return jQuery(this).each(
			function() {
				//bring in options
				var options = jQuery.extend(defaults, user_options);
				// grab our images
				var images = jQuery(this).children('li').children('img');
				//hide the images so the user doesn't see crap
				images.fadeOut(1);
				
				//save our list for future ref
				var ulist = jQuery(this);
				images.each(LoadImages);
				//start building structure
				jQuery(this).before("<div class='pika_main'></div>");
				// houses eveything about the UL
				var main_div = jQuery(this).prev(".pika_main");
				
				//add in slideshow elements when appropriate
				if(options.slide_enabled){
					main_div.append("<div class='pika_play'></div>");
					var play_div = jQuery(this).prev(".pika_main").children(".pika_play");
					play_div.html("<a class='pika_play_button'>" + options.buttons_text.play + "</a><a class='pika_stop_button'>" + options.buttons_text.stop + "</a>");
					play_div.fadeOut(1);
					var play_anchor = play_div.children('a:first');
					var stop_anchor = play_div.children('a:last');
				}
				//this div is used to make image and caption fade together
				main_div.append("<div class='pika_subdiv'></div>");
				var sub_div = main_div.children(".pika_subdiv");
				
				//the main image we'll be using to load
				sub_div.append("<img />");
				var main_img = sub_div.children("img");
				
				//create the caption div when appropriate
				if(options.show_captions){
					sub_div.append("<div class='pika_caption'></div>");
					var caption_div = sub_div.children(".pika_caption");

					sub_div.append("<div class='pika_imagename'></div>");
					var imagename_div=sub_div.children(".pika_imagename");

				}
				
				//navigation div ALWAYS gets created, its refrenced a lot				
				jQuery(this).after("<div class='pika_navigation'></div>");
				var navigation_div = jQuery(this).next(".pika_navigation");
				//fill in sub elements
				navigation_div.prepend("<a>" + options.buttons_text.previous + "</a> :: <a>" + options.buttons_text.next + "</a>");
				var previous_image_anchor = navigation_div.children('a:first');
				var next_image_anchor = navigation_div.children('a:last');
				
				//hide the navigation if the user doesn't want it
				if(!options.show_prev_next){
					navigation_div.css("display","none");
				}
				
				//playing triggers the loop for the slideshow
				var playing = options.auto_play;
				
				main_img.wrap("<a></a>");
				var main_link = main_img.parent("a");
				
				function LoadImages()
				{
					jQuery(this).bind("load", function()
					{
						//had to make a seperate function so that the thumbnails wouldn't have problems
						//from beings resized before loaded, thus not h/w
	
						var w = jQuery(this).width();
						var h = jQuery(this).height();
						if(w===0){w = jQuery(this).attr("width");}
						if(h===0){h = jQuery(this).attr("height");}
						//grab a ratio for image to user defined settings
						var rw = options.thumb_width/w;
						var rh = options.thumb_height/h;
						
						//determine which has the smallest ratio (thus needing
						//to be the side we use to scale so our whole thumb is filled)
						if(rw<rh){
							//we'll use ratio later to scale and not distort
							var ratio = rh;
							var left = ((w*ratio-options.thumb_width)/2)*-1;
							left = Math.round(left);
							//set images left offset to match
							jQuery(this).css({left:left});
						}else{
							var ratio = rw;
							//you can uncoment this lines to have the vertical picture centered
							//but usually tall photos have the focal point at the top...
							//var top = ((h*ratio-options.thumb_height)/2)*-1;
							//var top = Math.round(top);
							var top = 0;
							jQuery(this).css({top:top});
						}
						//use those ratios to calculate scale
						var width = Math.round(w*ratio);
						var height = Math.round(h*ratio);
						jQuery(this).css("position","relative");
						jQuery(this).width(width).height(height);
						var imgcss={
							width: width,
							height: height
						};
						jQuery(this).css(imgcss);					
						jQuery(this).hover(
							function(){jQuery(this).fadeTo(250,1);},
							function(){if(!jQuery(this).hasClass("pika_selected")){jQuery(this).fadeTo(250,0.4);}}
						);
						jQuery(this).fadeTo(250,0.4);	
						
						if(jQuery(this).hasClass('pika_first')){
							jQuery(this).trigger("click",["auto"]);
						}
						
					});
				
					//clone so the on loads will fire correctly
					var newImage = jQuery(this).clone(true).insertAfter(this);
					
					jQuery(this).remove();
	
					//reset images to the clones
					images = ulist.children('li').children('img');
				}
			function activate()
			{
				//sets the intial phase for everything

				//image_click is controls the fading
				images.bind("mouseover",image_click);
				//hiding refrence to slide elements if slide is disabled
				if(options.slide_enabled){
					if(options.auto_play){
						playing = true;
						play_anchor.hide();
						stop_anchor.show();
					}else{
						play_anchor.show();
						stop_anchor.hide();
					}
				}
				
				images.filter(":last").addClass("pika_last");
				images.filter(":first").addClass("pika_first");
				//css for the list
				var licss = {
					width: options.thumb_width+"px",
					height: options.thumb_height+"px",
					"list-style": "none",
					overflow: "hidden"
				};
				images.each(function(){
					jQuery(this).parent('li').css(licss);
					//fixes a bug where images don't get the correct display after loading
					if(jQuery(this).attr('complete')==true && jQuery(this).css('display')=="none")
					{
						jQuery(this).css({display:'inline'});
					}
				});
				//previous link to go back an image
				previous_image_anchor.bind("click",previous_image);
				//ditto for forward, also the item that gets auto clicked for slideshow
				next_image_anchor.bind("click",next_image);	
			}//end activate function

			function image_click(event, how){
					//catch when user clicks on an image Then cancel current slideshow
					if(how!="auto"){

						if(options.slide_enabled){
							stop_anchor.hide();
							play_anchor.show();
							playing=false;
						}
						main_img.stop();
						main_img.dequeue();
						if(options.show_captions)
						{
							caption_div.stop();
							caption_div.dequeue();
						}
					}
					
					
					//all our image variables
					if(options.user_thumbs)
					{		
						var image_source = jQuery(this).attr("ref");
					}else
					{
						var image_source = jQuery(this).attr("src");
					}
					var image_link = jQuery(this).attr("ref");
					var image_caption = "<br>"+jQuery(this).next("span").html();
					var image_name=jQuery(this).next("span").next("span").html();
					var image_id=jQuery(this).next("span").next("span").next("span").html();
					//fade out the old thumb
					images.filter(".pika_selected").fadeTo(250,0.4); 
					images.filter(".pika_selected").removeClass("pika_selected"); 
					//fade in the new thumb
					jQuery(this).fadeTo(250,1);
					jQuery(this).addClass("pika_selected");
					
					//fade the old image out and the new one in
					if(options.show_captions)
					{
						if(options.delay_caption)
						{
							//caption_div.fadeTo(800,0);
						}
						caption_div.html(image_caption);
						imagename_div.html("<br><font color='white'>"+ image_name + "</font><br><br>");
						

//						caption_div.html(image_name);
/*						caption_div.fadeTo(500,0,function(){
							caption_div.html(image_caption);
							caption_div.fadeTo(800,0);
						});*/
					}
					jQuery("#imageid").val(image_id);
					showComment(image_id);
					main_img.fadeTo(500,0.05,function(){
						main_img.attr("src",image_source);
						main_link.attr("href", image_link);

						if(main_img.attr("width")>800)
							main_img.attr("width",800);
						
						if(main_img.attr("height")>600)
							main_img.attr("height",600);

						main_img.fadeTo(800,1,function(){
							if(playing){
								jQuery(this).animate({top:0},options.slide_speed, function(){
									//redudency needed here to catch the user clicking on an image during a change.
									if(playing){next_image_anchor.trigger("click",["auto"]);}
								});
							}
						});
					});
			}//end image_click function
			
			function next_image(event, how){
				if(images.filter(".pika_selected").hasClass("pika_last")){
					images.filter(":first").trigger("click",how);
				}else{
					images.filter(".pika_selected").parent('li').next('li').children('img').trigger("click",how);
				}
			}//end next image function
			
			function previous_image(event, how){
				if(images.filter(".pika_selected").hasClass("pika_first")){
					images.filter(":last").trigger("click",how);
				}else{
					images.filter(".pika_selected").parent('li').prev('li').children('img').trigger("click",how);
				}
			}//end previous image function
			
			function play_button(){
				main_div.hover(
					function(){play_div.fadeIn(400);},
					function(){play_div.fadeOut(400);}
				);
				play_anchor.bind("click", function(){
					main_img.stop();
					main_img.dequeue();
					if(options.show_captions)
					{
						caption_div.stop();
						caption_div.dequeue();
					}
					playing = true;
					next_image_anchor.trigger("click",["auto"]);
					jQuery(this).hide();
					stop_anchor.show();
				});
				stop_anchor.bind("click", function(){
					playing = false;
					jQuery(this).hide();
					play_anchor.show();
				});
			}
			if(options.slide_enabled){play_button();}
			activate();
			images.filter(":first").trigger("mouseover");
			

		});//end return this.each
	}//end build function
	
	//activate applies the appropriate actions to all the different parts of the structure.
	//and loads the sets the first image
};//end jquery.ipikachoose		
jQuery.fn.PikaChoose = jQuery.iPikaChoose.build;

var xmlHttp1;
function GetXmlHttpObject()
{
var xmlHttp=null;
try
  {
  // Firefox, Opera 8.0+, Safari
  xmlHttp=new XMLHttpRequest();
  }
catch (e)
  {
  // Internet Explorer
  try
    {
    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
  catch (e)
    {
    xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
    }
  }
return xmlHttp;
}
function showGal(id,t)
{
	xmlHttp1=GetXmlHttpObject();
	if (xmlHttp1==null)
	  {
	  alert ("Your browser does not support AJAX!");
	  return;
	  } 
	  if(t>0)
	  	  document.getElementById("cdiv").value=t;
	  else
		  document.getElementById("cdiv").value=id;

var str=id;
var url="showgal.php";
url=url+"?u=" + str;
url=url+"&sid="+Math.random();
xmlHttp1.onreadystatechange=showGalstat;
xmlHttp1.open("GET",url,true);
xmlHttp1.send(null);
}
function showGalstat() 
{ 
	if (xmlHttp1.readyState==4)
	{ 
	var ccdiv="shgal"+document.getElementById("cdiv").value;
	document.getElementById(ccdiv).innerHTML = xmlHttp1.responseText;
	}
}
function showComment(i)
{
	xmlHttp1=GetXmlHttpObject();
	if (xmlHttp1==null)
	  {
	  alert ("Your browser does not support AJAX!");
	  return;
	  } 

	var url="showcomment.php";
	url=url+"?i=" + i;
	url=url+"&sid="+Math.random();
	xmlHttp1.onreadystatechange=showCommentstat;
	xmlHttp1.open("GET",url,true);
	xmlHttp1.send(null);
}
function showCommentstat() 
{ 
	if (xmlHttp1.readyState==4)
	{ 
		document.getElementById("comments").innerHTML = xmlHttp1.responseText;
	}
}
function addSubscribe(id)
{
	xmlHttp1=GetXmlHttpObject();
	if (xmlHttp1==null)
	  {
	  alert ("Your browser does not support AJAX!");
	  return;
	  } 
	  
var str=id;
var url="subscribe.php";
url=url+"?i=" + document.getElementById("imageid").value;
url=url+"&sid="+Math.random();
xmlHttp1.onreadystatechange=addSubscribeStat;
xmlHttp1.open("GET",url,true);
xmlHttp1.send(null);

}
function addSubscribeStat() 
{ 
	if (xmlHttp1.readyState==4)
	{ 
		alert(xmlHttp1.responseText);
	}
}
function delComment(i)
{
	xmlHttp1=GetXmlHttpObject();
	if (xmlHttp1==null)
	  {
	  alert ("Your browser does not support AJAX!");
	  return;
	  } 

	var url="delcomment.php";
	url=url+"?i=" + i;
	url=url+"&sid="+Math.random();
	xmlHttp1.onreadystatechange=delCommentstat;
	xmlHttp1.open("GET",url,true);
	xmlHttp1.send(null);
}
function delCommentstat() 
{ 
	if (xmlHttp1.readyState==4)
	{ 
		var j=document.getElementById("imageid").value;
		showComment(j);
		document.getElementById("comments").innerHTML = xmlHttp1.responseText;
	}
}