/**
* @license
* jQuery Tools @VERSION Tooltip - UI essentials
*
* NO COPYRIGHTS OR LICENSES. DO WHAT YOU LIKE.
*
* http://flowplayer.org/tools/tooltip/
*
* Since: November 2008
* Date: @DATE
*/
(function($) {

/*
removed: oneInstance, lazy,
tip must next to the trigger
isShown(fully), layout, tipClass, layout
*/

// static constructs
$.tools = $.tools || {version: '@VERSION'};

$.tools.tooltip = {

conf: {

// default effect variables
effect: 'toggle',
fadeOutSpeed: "fast",
predelay: 0,
delay: 30,
opacity: 1,
tip: 0,

// 'top', 'bottom', 'right', 'left', 'center'
position: ['top', 'center'],
offset: [0, 0],
relative: false,
cancelDefault: true,

// type to event mapping
events: {
def: "mouseenter,mouseleave",
input: "focus,blur",
widget: "focus mouseenter,blur mouseleave",
tooltip: "mouseenter,mouseleave"
},

// 1.2
layout: '<div/>',
tipClass: 'tooltip'
},

addEffect: function(name, loadFn, hideFn) {
effects[name] = [loadFn, hideFn];
}
};


var effects = {
toggle: [
function(done) {
var conf = this.getConf(), tip = this.getTip(), o = conf.opacity;
if (o < 1) { tip.css({opacity: o}); }
tip.show();
done.call();
},

function(done) {
this.getTip().hide();
done.call();
}
],

fade: [
function(done) {
var conf = this.getConf();
this.getTip().fadeTo(conf.fadeInSpeed, conf.opacity, done);
},
function(done) {
this.getTip().fadeOut(this.getConf().fadeOutSpeed, done);
}
]
};


/* calculate tip position relative to the trigger */
function getPosition(trigger, tip, conf) {


// get origin top/left position
var top = conf.relative ? trigger.position().top : trigger.offset().top,
left = conf.relative ? trigger.position().left : trigger.offset().left,
pos = conf.position[0];

top -= tip.outerHeight() - conf.offset[0];
left += trigger.outerWidth() + conf.offset[1];

// adjust Y
var height = tip.outerHeight() + trigger.outerHeight();
if (pos == 'center') { top += height / 2; }
if (pos == 'bottom') { top += height; }

// adjust X
pos = conf.position[1];
var width = tip.outerWidth() + trigger.outerWidth();
if (pos == 'center') { left -= width / 2; }
if (pos == 'left') { left -= width; }

return {top: top, left: left};
}



function Tooltip(trigger, conf) {

var self = this,
fire = trigger.add(self),
tip,
timer = 0,
pretimer = 0,
title = trigger.attr("title"),
effect = effects[conf.effect],
shown,

// get show/hide configuration
isInput = trigger.is(":input"),
isWidget = isInput && trigger.is(":checkbox, :radio, select, :button, :submit"),
type = trigger.attr("type"),
evt = conf.events[type] || conf.events[isInput ? (isWidget ? 'widget' : 'input') : 'def'];


// check that configuration is sane
if (!effect) { throw "Nonexistent effect \"" + conf.effect + "\""; }

evt = evt.split(/,\s*/);
if (evt.length != 2) { throw "Tooltip: bad events configuration for " + type; }


// trigger --> show
trigger.bind(evt[0], function(e) {
clearTimeout(timer);
if (conf.predelay) {
pretimer = setTimeout(function() { self.show(e); }, conf.predelay);

} else {
self.show(e);
}

// trigger --> hide
}).bind(evt[1], function(e) {
clearTimeout(pretimer);
if (conf.delay) {
timer = setTimeout(function() { self.hide(e); }, conf.delay);

} else {
self.hide(e);
}

});


// remove default title
if (title && conf.cancelDefault) {
trigger.removeAttr("title");
trigger.data("title", title);
}

$.extend(self, {

show: function(e) {

// tip not initialized yet
if (!tip) {

// autogenerated tooltip
if (title) {
tip = $(conf.layout).addClass(conf.tipClass).appendTo(document.body)
.hide().append(title);

// single tip element for all
} else if (conf.tip) {
tip = $(conf.tip).eq(0);

// manual tooltip
} else {
tip = trigger.next();
if (!tip.length) { tip = trigger.parent().next(); }
}

if (!tip.length) { throw "Cannot find tooltip for " + trigger; }
}

if (self.isShown()) { return self; }

// stop previous animation
tip.stop(true, true);

// get position
var pos = getPosition(trigger, tip, conf);


// onBeforeShow
e = e || $.Event();
e.type = "onBeforeShow";
fire.trigger(e, [pos]);
if (e.isDefaultPrevented()) { return self; }


// onBeforeShow may have altered the configuration
pos = getPosition(trigger, tip, conf);

// set position
tip.css({position:'absolute', top: pos.top, left: pos.left});

shown = true;

// invoke effect
effect[0].call(self, function() {
e.type = "onShow";
shown = 'full';
fire.trigger(e);
});


// tooltip events
var event = conf.events.tooltip.split(/,\s*/);

tip.bind(event[0], function() {
clearTimeout(timer);
clearTimeout(pretimer);
});

if (event[1] && !trigger.is("input:not(:checkbox, :radio), textarea")) {
tip.bind(event[1], function(e) {

// being moved to the trigger element
if (e.relatedTarget != trigger[0]) {
trigger.trigger(evt[1].split(" ")[0]);
}
});
}

return self;
},

hide: function(e) {

if (!tip || !self.isShown()) { return self; }

// onBeforeHide
e = e || $.Event();
e.type = "onBeforeHide";
fire.trigger(e);
if (e.isDefaultPrevented()) { return; }

shown = false;

effects[conf.effect][1].call(self, function() {
e.type = "onHide";
shown = false;
fire.trigger(e);
});

return self;
},

isShown: function(fully) {
return fully ? shown == 'full' : shown;
},

getConf: function() {
return conf;
},

getTip: function() {
return tip;
},

getTrigger: function() {
return trigger;
}

});

// callbacks
$.each("onHide,onBeforeShow,onShow,onBeforeHide".split(","), function(i, name) {

// configuration
if ($.isFunction(conf[name])) {
$(self).bind(name, conf[name]);
}

// API
self[name] = function(fn) {
$(self).bind(name, fn);
return self;
};
});

}


// jQuery plugin implementation
$.fn.tooltip = function(conf) {

// return existing instance
var api = this.data("tooltip");
if (api) { return api; }

conf = $.extend(true, {}, $.tools.tooltip.conf, conf);

// position can also be given as string
if (typeof conf.position == 'string') {
conf.position = conf.position.split(/,?\s/);
}

// install tooltip for each entry in jQuery object
this.each(function() {
api = new Tooltip($(this), conf);
$(this).data("tooltip", api);
});

return conf.api ? api: this;
};

}) (jQuery);