/*
 * 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 ($) {
    $.fn.tipTip = 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 () { },
            onContentLoad: function () { }
        };
        var opts = $.extend(defaults, options);

        // Setup tip tip elements and render them to the DOM
        if ($("#tiptip_holder").length <= 0) {
            var tiptip_holder = $('<div id="tiptip_holder" style="max-width:' + opts.maxWidth + ';"></div>');
            var tiptip_content = $('<div id="tiptip_content"></div>');
            var tiptip_arrow = $('<div id="tiptip_arrow"></div>');
            $("body").append(tiptip_holder.html(tiptip_content).prepend(tiptip_arrow.html('<div id="tiptip_arrow_inner"></div>')));
        } else {
            var tiptip_holder = $("#tiptip_holder");
            var tiptip_content = $("#tiptip_content");
            var 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 != "") {
                if (!opts.content) {
                    org_elem.removeAttr(opts.attribute); //remove original Attribute
                }
                var timeout = false;

                if (opts.activation == "hover") {
                    org_elem.hover(function () {
                        active_tiptip();
                    }, function () {
                        if (!opts.keepAlive) {
                            deactive_tiptip();
                        }
                    });
                    if (opts.keepAlive) {
                        tiptip_holder.hover(function () { }, function () {
                            deactive_tiptip();
                        });
                    }
                } else if (opts.activation == "focus") {
                    org_elem.focus(function () {
                        active_tiptip();
                    }).blur(function () {
                        deactive_tiptip();
                    });
                } else if (opts.activation == "click") {
                    org_elem.click(function () {
                        active_tiptip();
                        return false;
                    }).hover(function () { }, function () {
                        if (!opts.keepAlive) {
                            deactive_tiptip();
                        }
                    });
                    if (opts.keepAlive) {
                        tiptip_holder.hover(function () { }, function () {
                            deactive_tiptip();
                        });
                    }
                }

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

                    var top = parseInt(org_elem.offset()['top']);
                    var left = parseInt(org_elem.offset()['left']);
                    var org_width = parseInt(org_elem.outerWidth());
                    var org_height = parseInt(org_elem.outerHeight());
                    var tip_w = tiptip_holder.outerWidth();
                    var tip_h = tiptip_holder.outerHeight();
                    var w_compare = Math.round((org_width - tip_w) / 2);
                    var h_compare = Math.round((org_height - tip_h) / 2);
                    var marg_left = Math.round(left + w_compare);
                    var marg_top = Math.round(top + org_height + opts.edgeOffset);
                    var t_class = "";
                    var arrow_top = "";
                    var 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($(window).scrollLeft());
                    var left_compare = (tip_w + left) > parseInt($(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());
                    var 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 + "px", "margin-top": arrow_top + "px" });
                    tiptip_holder.css({ "margin-left": marg_left + "px", "margin-top": marg_top + "px" }).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);
                }
            }
        });
    }
})(jQuery);