/*
 * TipTip
 * Copyright 2010 Drew Wilson
 * www.drewwilson.com
 * code.drewwilson.com/entry/tiptip-jquery-plugin
 *
 * Version 1.3   -   Updated: Mar. 23, 2010
 *
 * This Plug-In will create a custom tooltip to replace the default
 * browser tooltip. It is extremely lightweight and very smart in
 * that it detects the edges of the browser window and will make sure
 * the tooltip stays within the current window size. As a result the
 * tooltip will adjust itself to be displayed above, below, to the left
 * or to the right depending on what is necessary to stay within the
 * browser window. It is completely customizable as well via CSS.
 *
 * This TipTip jQuery plug-in is dual licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
 */

(function($){


        var methods = {
                        init: function(options) {
                                var defaults = {
                                        activation: "hover",
                                        keepAlive: false,
                                        maxWidth: "200px",
                                        edgeOffset: 3,
                                        defaultPosition: "bottom",
                                        delay: 400,
                                        fadeIn: 200,
                                        fadeOut: 200,
                                        attribute: "title",
                                        content: false, // HTML or String to fill TipTIp with
                                        enter: function(){},
                                        exit: function(){}
                                };
                                var opts = $.extend(defaults, options);

                                if($("#tiptip_holder").length <= 0){
                                        var tiptip_holder = $('<div id="tiptip_holder" style="max-width:'+ opts.maxWidth +';"></div>'),
                                                tiptip_content = $('<div />', {id: 'tiptip_content'}),
                                                tiptip_arrow = $('<div />', { id: 'tiptip_arrow'});

                                        $("body").append(tiptip_holder.html(tiptip_content).prepend(tiptip_arrow.html('<div id="tiptip_arrow_inner"></div>')));
                                } else {
                                        var tiptip_holder = $("#tiptip_holder"),
                                                tiptip_content = $("#tiptip_content"),
                                                tiptip_arrow = $("#tiptip_arrow");
                                }

                                return this.each(function(){
                                        var org_elem = $(this);
                                        if(opts.content){
                                                var org_title = opts.content;
                                        } else {
                                                var org_title = org_elem.attr(opts.attribute);
                                        }
                                        if(org_title != ""){

                                                var timeout = false;

                                                if(opts.activation == "hover"){

                                                        org_elem.on('mouseenter.tip mouseleave.tip', function(e){
                                                                if(e.type === 'mouseenter'){
                                                                        active_tiptip();
                                                                }else{
                                                                        if(!opts.keepAlive){
                                                                                deactive_tiptip();
                                                                        }
                                                                }
                                                        });
                                                        if(opts.keepAlive){
                                                                tiptip_holder.hover(function(){}, function(){
                                                                        deactive_tiptip();
                                                                });
                                                        }
                                                } else if(opts.activation == "focus"){
                                                        org_elem.on('focus.tip', function(){
                                                                active_tiptip();
                                                        }).on('blur.tip', function(){
                                                                deactive_tiptip();
                                                        });
                                                } else if(opts.activation == "click"){
                                                        org_elem.on('click.tip', function(){
                                                                active_tiptip();
                                                                return false;
                                                        }).on('mouseleave.tip', function(){
                                                                if(!opts.keepAlive){
                                                                        deactive_tiptip();
                                                                }
                                                        });
                                                        if(opts.keepAlive){
                                                                tiptip_holder.hover(function(){}, function(){
                                                                        deactive_tiptip();
                                                                });
                                                        }
                                                }

                                                function active_tiptip(){
                                                        opts.enter.call(this);
                                                        tiptip_content.html(org_title);
                                                        tiptip_holder.hide().removeAttr("class").css("margin","0");
                                                        tiptip_arrow.removeAttr("style");

                                                        var top = parseInt(org_elem.offset()['top']),
                                                                left = parseInt(org_elem.offset()['left']),
                                                                org_width = parseInt(org_elem.outerWidth()),
                                                                org_height = parseInt(org_elem.outerHeight()),
                                                                tip_w = tiptip_holder.outerWidth(),
                                                                tip_h = tiptip_holder.outerHeight(),
                                                                w_compare = Math.round((org_width - tip_w) / 2),
                                                                h_compare = Math.round((org_height - tip_h) / 2),
                                                                marg_left = Math.round(left + w_compare),
                                                                marg_top = Math.round(top + org_height + opts.edgeOffset),
                                                                t_class = "",
                                                                arrow_top = "",
                                                                arrow_left = Math.round(tip_w - 12) / 2;

                                    if(opts.defaultPosition == "bottom"){
                                        t_class = "_bottom";
                                        } else if(opts.defaultPosition == "top"){
                                                t_class = "_top";
                                        } else if(opts.defaultPosition == "left"){
                                                t_class = "_left";
                                        } else if(opts.defaultPosition == "right"){
                                                t_class = "_right";
                                        }

                                                        var right_compare = (w_compare + left) < parseInt($(window).scrollLeft()),
                                                                left_compare = (tip_w + left) > parseInt($(window).width());

                                                        if((right_compare && w_compare < 0) || (t_class == "_right" && !left_compare) || (t_class == "_left" && left < (tip_w + opts.edgeOffset + 5))){
                                                                t_class = "_right";
                                                                arrow_top = Math.round(tip_h - 13) / 2;
                                                                arrow_left = -12;
                                                                marg_left = Math.round(left + org_width + opts.edgeOffset);
                                                                marg_top = Math.round(top + h_compare);
                                                        } else if((left_compare && w_compare < 0) || (t_class == "_left" && !right_compare)){
                                                                t_class = "_left";
                                                                arrow_top = Math.round(tip_h - 13) / 2;
                                                                arrow_left =  Math.round(tip_w);
                                                                marg_left = Math.round(left - (tip_w + opts.edgeOffset + 5));
                                                                marg_top = Math.round(top + h_compare);
                                                        }

                                                        var top_compare = (top + org_height + opts.edgeOffset + tip_h + 8) > parseInt($(window).height() + $(window).scrollTop()),
                                                                bottom_compare = ((top + org_height) - (opts.edgeOffset + tip_h + 8)) < 0;

                                                        if(top_compare || (t_class == "_bottom" && top_compare) || (t_class == "_top" && !bottom_compare)){
                                                                if(t_class == "_top" || t_class == "_bottom"){
                                                                        t_class = "_top";
                                                                } else {
                                                                        t_class = t_class+"_top";
                                                                }
                                                                arrow_top = tip_h;
                                                                marg_top = Math.round(top - (tip_h + 5 + opts.edgeOffset));
                                                        } else if(bottom_compare | (t_class == "_top" && bottom_compare) || (t_class == "_bottom" && !top_compare)){
                                                                if(t_class == "_top" || t_class == "_bottom"){
                                                                        t_class = "_bottom";
                                                                } else {
                                                                        t_class = t_class+"_bottom";
                                                                }
                                                                arrow_top = -12;
                                                                marg_top = Math.round(top + org_height + opts.edgeOffset);
                                                        }

                                                        if(t_class == "_right_top" || t_class == "_left_top"){
                                                                marg_top = marg_top + 5;
                                                        } else if(t_class == "_right_bottom" || t_class == "_left_bottom"){
                                                                marg_top = marg_top - 5;
                                                        }
                                                        if(t_class == "_left_top" || t_class == "_left_bottom"){
                                                                marg_left = marg_left + 5;
                                                        }
                                                        tiptip_arrow.css({"margin-left": arrow_left, "margin-top": arrow_top});
                                                        tiptip_holder.css({"margin-left": marg_left, "margin-top": marg_top}).attr("class","tip"+t_class);

                                                        if (timeout){ clearTimeout(timeout); }
                                                        timeout = setTimeout(function(){ tiptip_holder.stop(true,true).fadeIn(opts.fadeIn); }, opts.delay);
                                                }

                                                function deactive_tiptip(){
                                                        opts.exit.call(this);
                                                        if (timeout){ clearTimeout(timeout); }
                                                        tiptip_holder.fadeOut(opts.fadeOut);
                                                }
                                        }
                                });
                        },
                        destroy: function(options) {
                                return $(this).each(function() {
                    $(this).off('.tip');
                                });
                        }
        };

        $.fn.tipTip = function() {
                var method = arguments[0];

                if(methods[method]) {
                        method = methods[method];
                        arguments = Array.prototype.slice.call(arguments, 1);
                } else if( typeof(method) == 'object' || !method ) {
                        method = methods.init;
                } else {
                        return this;
                }

                return method.apply(this, arguments);
        }
})(jQuery);