/*
Plugin Name: Advanced AJAX Page Loader
Version: 2.6.0
Plugin URI: http://software.resplace.net/WordPress/AjaxPageLoader.php
Description: Load pages within blog without reloading page, shows loading bar and updates the browsers URL so that the user can bookmark or share the url as if they had loaded a page normally. Also updates there history so they have a track of there browsing habbits on your blog!
Author URI: http://dean.resplace.net
Author: Dean Williams
*/

//Set this to true if your getting some javascript problems
var AAPL_reloadDocumentReady = false;

//Dont mess with these...
var AAPL_isLoad = false;
var AAPL_started = false;
var AAPL_searchPath = null;
var AAPL_ua = jQuery.browser;


//The holy grail...
jQuery(document).ready(function() {
	if (AAPL_warnings == true) {
		AAPL_jqVersion = jQuery().jquery;
		if (AAPL_jqVersion.substr(0,3) != "1.8" && AAPL_warnings == true) {
			alert("cmon guys, your jQuery version is outdated, please update it - I can see version: " + AAPL_jqVersion);
		}
	}
	
	AAPL_loadPageInit("");
});


window.onpopstate = function(event) {
	//We now have a smart multi-ignore feature controlled by the admin panel
	if (AAPL_started === true && AAPL_check_ignore(document.location.toString()) == true) {	
		AAPL_loadPage(document.location.toString(),1);
	}
};

function AAPL_loadPageInit(scope){
	jQuery(scope + "a").click(function(event){
		//if its not an admin url, or doesnt contain #
		if (this.href.indexOf(AAPLhome) >= 0 && AAPL_check_ignore(this.href) == true){
			// stop default behaviour
			event.preventDefault();

			// remove click border
			this.blur();

			// get caption: either title or name attribute
			var caption = this.title || this.name || "";

			// get rel attribute for image groups
			var group = this.rel || false;

			//Load click code - pass reference.
			try {
				AAPL_click_code(this);
			} catch(err) {
				if (AAPL_warnings == true) {
					txt="There was an error with click_code.\n\n";
					txt+="Error description: " + err.message + "\n\n";
					txt+="Click OK to continue.\n\n";
					alert(txt);
				}
			}

			// display the box for the elements href
			AAPL_loadPage(this.href);
		}
	});
	
	jQuery('.' + AAPL_search_class).each(function(index) {
		if (jQuery(this).attr("action")) {
			//Get the current action so we know where to submit to
			AAPL_searchPath = jQuery(this).attr("action");

			//bind our code to search submit, now we can load everything through ajax :)
			//jQuery('#searchform').name = 'searchform';
			jQuery(this).submit(function() {
				submitSearch(jQuery(this).serialize());
				return false;
			});
		} else {
			if (AAPL_warnings == true) {
				alert("Search form found but attribute 'action' missing!?!?!");
			}
		}
	});
  
	if (scope == "") { 
		if (jQuery('#searchform').attr("action")) {
			//Get the current action so we know where to submit to
			AAPL_searchPath = jQuery('#searchform').attr("action");

			//bind our code to search submit, now we can load everything through ajax :)
			//jQuery('#searchform').name = 'searchform';
			jQuery('#searchform').submit(function() {
				submitSearch(jQuery(this).serialize());
				return false;
			});
		} else {
			if (AAPL_warnings == true) {
				alert("Could not bind to search form...\nCould not find element with id='searchform' or attribute 'action' missing.");
			}
		}
	}
}

function AAPL_loadPage(url, push, getData){

	if (!AAPL_isLoad){
		if (AAPL_scroll_top == true) {
			scroll(0,0);
		}
		AAPL_isLoad = true;
		
		//enable onpopstate
		AAPL_started = true;
		
		//AJAX Load page and update address bar url! :)
		//get domain name...
		nohttp = url.replace("http://","").replace("https://","");
		firstsla = nohttp.indexOf("/");
		pathpos = url.indexOf(nohttp);
		path = url.substring(pathpos + firstsla);
		
		//Only do a history state if clicked on the page.
		if (push != 1) {
			//TODO: implement a method for IE
			if (typeof window.history.pushState == "function") {
				var stateObj = { foo: 1000 + Math.random()*1001 };
				history.pushState(stateObj, "ajax page loaded...", path);
			} else {
				if (AAPL_warnings == true) {
					alert("'pushState' method not supported in this browser, sorry about that!");
				}
			}
		}
		
		if (!jQuery('#' + AAPL_content)) {
			if (AAPL_warnings == true) {
				alert("Could not find content region, you need to set an ID to an element that surrounds the content on the page, make sure the 'content' variable is also set to the ID name.");
				return false;
			}
		}
		
		//start changing the page content.
		jQuery('#' + AAPL_content).fadeOut("slow", function() {
			//See the below - NEVER TRUST jQuery to sort ALL your problems - this breaks Ie7 + 8 :o
			//jQuery('#' + AAPL_content).html(AAPL_loading_code);
			
			//Nothing like good old pure JavaScript...
			document.getElementById(AAPL_content).innerHTML = AAPL_loading_code;
			
			jQuery('#' + AAPL_content).fadeIn("slow", function() {
				jQuery.ajax({
					type: "GET",
					url: url,
					data: getData,
					cache: false,
					dataType: "html",
					success: function(data) {
						AAPL_isLoad = false;
						
						//get title attribute
						datax = data.split('<title>');
						titlesx = data.split('</title>');
						
						if (datax.length == 2 || titlesx.length == 2) {
							data = data.split('<title>')[1];
							titles = data.split('</title>')[0];
							
							//set the title?
							//after several months, I think this is the solution to fix &amp; issues
							jQuery(document).attr('title', (jQuery("<div/>").html(titles).text()));
						} else {
							if (AAPL_warnings == true) {
								alert("You seem to have more than one <title> tag on the page, this is going to cause some major problems so page title changing is disabled.");
							}
						}
						
						//Google analytics?
						if (AAPL_track_analytics == true) {
							if(typeof _gaq != "undefined") {
								if (typeof getData == "undefined") {
									getData = "";
								} else {
									getData = "?" + getData;
								}
								_gaq.push(['_trackPageview', path + getData]);
							} else {
								if (AAPL_warnings == true) {
									alert("Analytics does not seem to be initialized! Could not track this page.");
								}
							}
						}
						
						///////////////////////////////////////////
						//  WE HAVE AN ADMIN PAGE NOW - GO THERE //
						///////////////////////////////////////////
                        
						
						try {
							AAPL_data_code(data);
						} catch(err) {
							if (AAPL_warnings == true) {
								txt="There was an error with data_code.\n\n";
								txt+="Error description: " + err.message + "\n\n";
								txt+="Click OK to continue.\n\n";
								alert(txt);
							}
						}

						
						//get content
						data = data.split('id="' + AAPL_content + '"')[1];
						data = data.substring(data.indexOf('>') + 1);
						var depth = 1;
						var output = '';
						
						while(depth > 0) {
							temp = data.split('</div>')[0];
							
							//count occurrences
							i = 0;
							pos = temp.indexOf("<div");
							while (pos != -1) {
								i++;
								pos = temp.indexOf("<div", pos + 1);
							}
							//end count
							depth=depth+i-1;
							output=output+data.split('</div>')[0] + '</div>';
							data = data.substring(data.indexOf('</div>') + 6);
						}

						//put the resulting html back into the page!
						
						//See the below - NEVER TRUST jQuery to sort ALL your problems - this breaks Ie7 + 8 :o
						//jQuery('#' + AAPL_content).html(output);
						
						//Nothing like good old pure JavaScript...
						document.getElementById(AAPL_content).innerHTML = output;

						//move content area so we cant see it.
						jQuery('#' + AAPL_content).css("position", "absolute");
						jQuery('#' + AAPL_content).css("left", "20000px");

						//show the content area
						jQuery('#' + AAPL_content).show();

						//recall loader so that new URLS are captured.
						AAPL_loadPageInit("#" + AAPL_content + " ");
						
						if (AAPL_reloadDocumentReady == true) {
							jQuery(document).trigger("ready");
						}
						
						///////////////////////////////////////////
						//  WE HAVE AN ADMIN PAGE NOW - GO THERE //
						///////////////////////////////////////////
						
						try {
							AAPL_reload_code();
						} catch(err) {
							if (AAPL_warnings == true) {
								txt="There was an error with reload_code.\n\n";
								txt+="Error description: " + err.message + "\n\n";
								txt+="Click OK to continue.\n\n";
								alert(txt);
							}
							
							//we have to show something... + reset the position.
							//jQuery('#' + AAPL_content).css("position", "");
							//jQuery('#' + AAPL_content).css("left", "");
							//jQuery('#' + AAPL_content).html('<br><br>There was an error loading the page.<br><br>');
						}

						//now hide it again and put the position back!
						jQuery('#' + AAPL_content).hide();
						jQuery('#' + AAPL_content).css("position", "");
						jQuery('#' + AAPL_content).css("left", "");

						jQuery('#' + AAPL_content).fadeIn("slow", function() {});
					},
					error: function(jqXHR, textStatus, errorThrown) {
						//Would append this, but would not be good if this fired more than once!!
						AAPL_isLoad = false;
						document.title = "Error loading requested page!";
						
						if (AAPL_warnings == true) {
							txt="There was an error with AJAX.\n\n";
							txt+="Error status: " + textStatus + "\n\n";
							txt+="Error: " + errorThrown + "\n\n";
							txt+="Click OK to continue.\n\n";
							alert(txt);
						}
						
						//See the below - NEVER TRUST jQuery to sort ALL your problems - this breaks Ie7 + 8 :o
						//jQuery('#' + AAPL_content).html(AAPL_loading_error_code);
						
						//Nothing like good old pure JavaScript...
						document.getElementById(AAPL_content).innerHTML = AAPL_loading_error_code;
					}
				});
			});
		});
	}
}

function submitSearch(param){
	if (!AAPL_isLoad){
		AAPL_loadPage(AAPL_searchPath, 0, param);
	}
}

function AAPL_check_ignore(url) {
	for (var i in AAPL_ignore) {
		if (url.indexOf(AAPL_ignore[i]) >= 0) {
			return false;
		}
	}
	
	//peakaboo fixed.
	
	//WHOA!! Lets f**k IE7 and IE8 off because they are sh**e!
		//No I'm corrected, it may be IE's fault also but it's definately jQuery fault I've had this nightmare!!
		/*
		if ( AAPL_ua.msie && (AAPL_ua.version.slice(0,1) == "8" || AAPL_ua.version.slice(0,1) == "7") ) {
			if (AAPL_warnings == true) {
				alert("Unfortunately there is a bug in IE7 and IE8 which affects the renderer, it's called the peakaboo bug. So we have disabled this plugin.");
			}
			return false;
		}
		*/
	
	return true;
}