1// tipsy, facebook style tooltips for jquery 2// version 1.0.0a 3// (c) 2008-2010 jason frame [[email protected]] 4// released under the MIT license 5 6(function($) { 7 8 function Tipsy(element, options) { 9 this.$element = $(element); 10 this.options = options; 11 this.enabled = true; 12 this.fixTitle(); 13 } 14 15 Tipsy.prototype = { 16 show: function() { 17 var title = this.getTitle(); 18 if (title && this.enabled) { 19 var $tip = this.tip(); 20 21 $tip.find('.tipsy-inner')[this.options.html ? 'html' : 'text'](title); 22 $tip[0].className = 'tipsy'; // reset classname in case of dynamic gravity 23 $tip.remove().css({top: 0, left: 0, visibility: 'hidden', display: 'block'}).appendTo(document.body); 24 25 var pos = $.extend({}, this.$element.offset(), { 26 width: this.$element[0].offsetWidth, 27 height: this.$element[0].offsetHeight 28 }); 29 30 var actualWidth = $tip[0].offsetWidth, actualHeight = $tip[0].offsetHeight; 31 var gravity = (typeof this.options.gravity == 'function') 32 ? this.options.gravity.call(this.$element[0]) 33 : this.options.gravity; 34 35 var tp; 36 switch (gravity.charAt(0)) { 37 case 'n': 38 tp = {top: pos.top + pos.height + this.options.offset, left: pos.left + pos.width / 2 - actualWidth / 2}; 39 break; 40 case 's': 41 tp = {top: pos.top - actualHeight - this.options.offset, left: pos.left + pos.width / 2 - actualWidth / 2}; 42 break; 43 case 'e': 44 tp = {top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left - actualWidth - this.options.offset}; 45 break; 46 case 'w': 47 tp = {top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left + pos.width + this.options.offset}; 48 break; 49 } 50 51 if (gravity.length == 2) { 52 if (gravity.charAt(1) == 'w') { 53 tp.left = pos.left + pos.width / 2 - 15; 54 } else { 55 tp.left = pos.left + pos.width / 2 - actualWidth + 15; 56 } 57 } 58 59 $tip.css(tp).addClass('tipsy-' + gravity); 60 61 if (this.options.fade) { 62 $tip.stop().css({opacity: 0, display: 'block', visibility: 'visible'}).animate({opacity: this.options.opacity}); 63 } else { 64 $tip.css({visibility: 'visible', opacity: this.options.opacity}); 65 } 66 } 67 }, 68 69 hide: function() { 70 if (this.options.fade) { 71 this.tip().stop().fadeOut(function() { $(this).remove(); }); 72 } else { 73 this.tip().remove(); 74 } 75 }, 76 77 fixTitle: function() { 78 var $e = this.$element; 79 if ($e.attr('title') || typeof($e.attr('original-title')) != 'string') { 80 $e.attr('original-title', $e.attr('title') || '').removeAttr('title'); 81 } 82 }, 83 84 getTitle: function() { 85 var title, $e = this.$element, o = this.options; 86 this.fixTitle(); 87 var title, o = this.options; 88 if (typeof o.title == 'string') { 89 title = $e.attr(o.title == 'title' ? 'original-title' : o.title); 90 } else if (typeof o.title == 'function') { 91 title = o.title.call($e[0]); 92 } 93 title = ('' + title).replace(/(^\s*|\s*$)/, ""); 94 return title || o.fallback; 95 }, 96 97 tip: function() { 98 if (!this.$tip) { 99 this.$tip = $('<div class="tipsy"></div>').html('<div class="tipsy-arrow"></div><div class="tipsy-inner"></div>'); 100 } 101 return this.$tip; 102 }, 103 104 validate: function() { 105 if (!this.$element[0].parentNode) { 106 this.hide(); 107 this.$element = null; 108 this.options = null; 109 } 110 }, 111 112 enable: function() { this.enabled = true; }, 113 disable: function() { this.enabled = false; }, 114 toggleEnabled: function() { this.enabled = !this.enabled; } 115 }; 116 117 $.fn.tipsy = function(options) { 118 119 if (options === true) { 120 return this.data('tipsy'); 121 } else if (typeof options == 'string') { 122 var tipsy = this.data('tipsy'); 123 if (tipsy) tipsy[options](); 124 return this; 125 } 126 127 options = $.extend({}, $.fn.tipsy.defaults, options); 128 129 function get(ele) { 130 var tipsy = $.data(ele, 'tipsy'); 131 if (!tipsy) { 132 tipsy = new Tipsy(ele, $.fn.tipsy.elementOptions(ele, options)); 133 $.data(ele, 'tipsy', tipsy); 134 } 135 return tipsy; 136 } 137 138 function enter() { 139 var tipsy = get(this); 140 tipsy.hoverState = 'in'; 141 if (options.delayIn == 0) { 142 tipsy.show(); 143 } else { 144 tipsy.fixTitle(); 145 setTimeout(function() { if (tipsy.hoverState == 'in') tipsy.show(); }, options.delayIn); 146 } 147 }; 148 149 function leave() { 150 var tipsy = get(this); 151 tipsy.hoverState = 'out'; 152 if (options.delayOut == 0) { 153 tipsy.hide(); 154 } else { 155 setTimeout(function() { if (tipsy.hoverState == 'out') tipsy.hide(); }, options.delayOut); 156 } 157 }; 158 159 if (!options.live) this.each(function() { get(this); }); 160 161 if (options.trigger != 'manual') { 162 var binder = options.live ? 'live' : 'bind', 163 eventIn = options.trigger == 'hover' ? 'mouseenter' : 'focus', 164 eventOut = options.trigger == 'hover' ? 'mouseleave' : 'blur'; 165 this[binder](eventIn, enter)[binder](eventOut, leave); 166 } 167 168 return this; 169 170 }; 171 172 $.fn.tipsy.defaults = { 173 delayIn: 0, 174 delayOut: 0, 175 fade: false, 176 fallback: '', 177 gravity: 'n', 178 html: false, 179 live: false, 180 offset: 0, 181 opacity: 0.8, 182 title: 'title', 183 trigger: 'hover' 184 }; 185 186 // Overwrite this method to provide options on a per-element basis. 187 // For example, you could store the gravity in a 'tipsy-gravity' attribute: 188 // return $.extend({}, options, {gravity: $(ele).attr('tipsy-gravity') || 'n' }); 189 // (remember - do not modify 'options' in place!) 190 $.fn.tipsy.elementOptions = function(ele, options) { 191 return $.metadata ? $.extend({}, options, $(ele).metadata()) : options; 192 }; 193 194 $.fn.tipsy.autoNS = function() { 195 return $(this).offset().top > ($(document).scrollTop() + $(window).height() / 2) ? 's' : 'n'; 196 }; 197 198 $.fn.tipsy.autoWE = function() { 199 return $(this).offset().left > ($(document).scrollLeft() + $(window).width() / 2) ? 'e' : 'w'; 200 }; 201 202})(jQuery);
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