Hello-World-Component/media/uikit-v2/js/components/tooltip.js

/*! UIkit 2.27.5 | http://www.getuikit.com | (c) 2014 YOOtheme | MIT License */
(function(addon) {
    var component;

    if (window.UIkit2) {
        component = addon(UIkit2);
    }

    if (typeof define == 'function' && define.amd) {
        define('uikit-tooltip', ['uikit'], function(){
            return component || addon(UIkit2);
        });
    }

})(function(UI){

    "use strict";

    var $tooltip,   // tooltip container
        tooltipdelay, checkIdle;

    UI.component('tooltip', {

        defaults: {
            offset: 5,
            pos: 'top',
            animation: false,
            delay: 0, // in miliseconds
            cls: '',
            activeClass: 'uk-active',
            src: function(ele) {
                var title = ele.attr('title');

                if (title !== undefined) {
                    ele.data('cached-title', title).removeAttr('title');
                }

                return ele.data("cached-title");
            }
        },

        tip: '',

        boot: function() {

            // init code
            UI.$html.on('mouseenter.tooltip.uikit focus.tooltip.uikit', '[data-uk-tooltip]', function(e) {
                var ele = UI.$(this);

                if (!ele.data('tooltip')) {
                    UI.tooltip(ele, UI.Utils.options(ele.attr('data-uk-tooltip')));
                    ele.trigger('mouseenter');
                }
            });
        },

        init: function() {

            var $this = this;

            if (!$tooltip) {
                $tooltip = UI.$('<div class="uk-tooltip"></div>').appendTo("body");
            }

            this.on({
                focus      : function(e) { $this.show(); },
                blur       : function(e) { $this.hide(); },
                mouseenter : function(e) { $this.show(); },
                mouseleave : function(e) { $this.hide(); }
            });
        },

        show: function() {

            this.tip = typeof(this.options.src) === 'function' ? this.options.src(this.element) : this.options.src;

            if (tooltipdelay) clearTimeout(tooltipdelay);
            if (checkIdle)    clearInterval(checkIdle);

            if (typeof(this.tip) === 'string' ? !this.tip.length:true) return;

            $tooltip.stop().css({top: -2000, visibility: 'hidden'}).removeClass(this.options.activeClass).show();
            $tooltip.html('<div class="uk-tooltip-inner">' + this.tip + '</div>');

            var $this      = this,
                pos        = UI.$.extend({}, this.element.offset(), {width: this.element[0].offsetWidth, height: this.element[0].offsetHeight}),
                width      = $tooltip[0].offsetWidth,
                height     = $tooltip[0].offsetHeight,
                offset     = typeof(this.options.offset) === "function" ? this.options.offset.call(this.element) : this.options.offset,
                position   = typeof(this.options.pos) === "function" ? this.options.pos.call(this.element) : this.options.pos,
                tmppos     = position.split("-"),
                tcss       = {
                    display    : 'none',
                    visibility : 'visible',
                    top        : (pos.top + pos.height + height),
                    left       : pos.left
                };


            // prevent strange position
            // when tooltip is in offcanvas etc.
            if (UI.$html.css('position')=='fixed' || UI.$body.css('position')=='fixed'){
                var bodyoffset = UI.$('body').offset(),
                    htmloffset = UI.$('html').offset(),
                    docoffset  = {top: (htmloffset.top + bodyoffset.top), left: (htmloffset.left + bodyoffset.left)};

                pos.left -= docoffset.left;
                pos.top  -= docoffset.top;
            }


            if ((tmppos[0] == 'left' || tmppos[0] == 'right') && UI.langdirection == 'right') {
                tmppos[0] = tmppos[0] == 'left' ? 'right' : 'left';
            }

            var variants =  {
                bottom  : {top: pos.top + pos.height + offset, left: pos.left + pos.width / 2 - width / 2},
                top     : {top: pos.top - height - offset, left: pos.left + pos.width / 2 - width / 2},
                left    : {top: pos.top + pos.height / 2 - height / 2, left: pos.left - width - offset},
                right   : {top: pos.top + pos.height / 2 - height / 2, left: pos.left + pos.width + offset}
            };

            UI.$.extend(tcss, variants[tmppos[0]]);

            if (tmppos.length == 2) tcss.left = (tmppos[1] == 'left') ? (pos.left) : ((pos.left + pos.width) - width);

            var boundary = this.checkBoundary(tcss.left, tcss.top, width, height);

            if(boundary) {

                switch(boundary) {
                    case 'x':

                        if (tmppos.length == 2) {
                            position = tmppos[0]+"-"+(tcss.left < 0 ? 'left': 'right');
                        } else {
                            position = tcss.left < 0 ? 'right': 'left';
                        }

                        break;

                    case 'y':
                        if (tmppos.length == 2) {
                            position = (tcss.top < 0 ? 'bottom': 'top')+'-'+tmppos[1];
                        } else {
                            position = (tcss.top < 0 ? 'bottom': 'top');
                        }

                        break;

                    case 'xy':
                        if (tmppos.length == 2) {
                            position = (tcss.top < 0 ? 'bottom': 'top')+'-'+(tcss.left < 0 ? 'left': 'right');
                        } else {
                            position = tcss.left < 0 ? 'right': 'left';
                        }

                        break;

                }

                tmppos = position.split('-');

                UI.$.extend(tcss, variants[tmppos[0]]);

                if (tmppos.length == 2) tcss.left = (tmppos[1] == 'left') ? (pos.left) : ((pos.left + pos.width) - width);
            }


            tcss.left -= UI.$body.position().left;

            tooltipdelay = setTimeout(function(){

                $tooltip.css(tcss).attr('class', ['uk-tooltip', 'uk-tooltip-'+position, $this.options.cls].join(' '));

                if ($this.options.animation) {
                    $tooltip.css({opacity: 0, display: 'block'}).addClass($this.options.activeClass).animate({opacity: 1}, parseInt($this.options.animation, 10) || 400);
                } else {
                    $tooltip.show().addClass($this.options.activeClass);
                }

                tooltipdelay = false;

                // close tooltip if element was removed or hidden
                checkIdle = setInterval(function(){
                    if(!$this.element.is(':visible')) $this.hide();
                }, 150);

            }, parseInt(this.options.delay, 10) || 0);
        },

        hide: function() {

            if (this.element.is('input') && this.element[0]===document.activeElement) return;

            if (tooltipdelay) clearTimeout(tooltipdelay);
            if (checkIdle)  clearInterval(checkIdle);

            $tooltip.stop();

            if (this.options.animation) {

                var $this = this;

                $tooltip.fadeOut(parseInt(this.options.animation, 10) || 400, function(){
                    $tooltip.removeClass($this.options.activeClass)
                });

            } else {
                $tooltip.hide().removeClass(this.options.activeClass);
            }
        },

        content: function() {
            return this.tip;
        },

        checkBoundary: function(left, top, width, height) {

            var axis = "";

            if(left < 0 || ((left - UI.$win.scrollLeft())+width) > window.innerWidth) {
               axis += "x";
            }

            if(top < 0 || ((top - UI.$win.scrollTop())+height) > window.innerHeight) {
               axis += "y";
            }

            return axis;
        }
    });

    return UI.tooltip;
});