resources/src/jquery.tipsy/jquery.tipsy.js

   1 // tipsy, facebook style tooltips for jquery
   2 // version 1.0.0a*
   3 // (c) 2008-2010 jason frame [jason@onehackoranother.com]
   4 // released under the MIT license
   5
   6 // * This installation of tipsy includes several local modifications to both Javascript and CSS.
   7 //   Please be careful when upgrading.
   8
   9 (function($) {
  10
  11     function maybeCall(thing, ctx) {
  12         return (typeof thing == 'function') ? (thing.call(ctx)) : thing;
  13     }
  14
  15     function Tipsy(element, options) {
  16         this.$element = $(element);
  17         this.options = options;
  18         this.enabled = true;
  19         this.fixTitle();
  20     }
  21
  22     Tipsy.prototype = {
  23         show: function() {
  24             var title = this.getTitle();
  25             if (title && this.enabled) {
  26                 var $tip = this.tip();
  27
  28                 $tip.find('.tipsy-inner')[this.options.html ? 'html' : 'text'](title);
  29                 $tip[0].className = 'tipsy'; // reset classname in case of dynamic gravity
  30                 if (this.options.className) {
  31                     $tip.addClass(maybeCall(this.options.className, this.$element[0]));
  32                 }
  33                 $tip.remove().css({top: 0, left: 0, visibility: 'hidden', display: 'block'}).appendTo(document.body);
  34
  35                 var pos = $.extend({}, this.$element.offset(), {
  36                     width: this.$element[0].offsetWidth,
  37                     height: this.$element[0].offsetHeight
  38                 });
  39
  40                 var gravity = (typeof this.options.gravity == 'function')
  41                                 ? this.options.gravity.call(this.$element[0])
  42                                 : this.options.gravity;
  43
  44                 // Attach css classes before checking height/width so they
  45                 // can be applied.
  46                 $tip.addClass('tipsy-' + gravity);
  47                 if (this.options.className) {
  48                     $tip.addClass(maybeCall(this.options.className, this.$element[0]));
  49                 }
  50
  51                 var actualWidth = $tip[0].offsetWidth, actualHeight = $tip[0].offsetHeight;
  52                 var tp;
  53                 switch (gravity.charAt(0)) {
  54                     case 'n':
  55                         tp = {top: pos.top + pos.height + this.options.offset, left: pos.left + pos.width / 2 - actualWidth / 2};
  56                         break;
  57                     case 's':
  58                         tp = {top: pos.top - actualHeight - this.options.offset, left: pos.left + pos.width / 2 - actualWidth / 2};
  59                         break;
  60                     case 'e':
  61                         tp = {top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left - actualWidth - this.options.offset};
  62                         break;
  63                     case 'w':
  64                         tp = {top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left + pos.width + this.options.offset};
  65                         break;
  66                 }
  67
  68                 if (gravity.length == 2) {
  69                     if (gravity.charAt(1) == 'w') {
  70                         if (this.options.center) {
  71                             tp.left = pos.left + pos.width / 2 - 15;
  72                         } else {
  73                             tp.left = pos.left;
  74                         }
  75                     } else {
  76                         if (this.options.center) {
  77                             tp.left = pos.left + pos.width / 2 - actualWidth + 15;
  78                         } else {
  79                             tp.left = pos.left + pos.width;
  80                         }
  81                     }
  82                 }
  83                 $tip.css(tp);
  84
  85                 if (this.options.fade) {
  86                     $tip.stop().css({opacity: 0, display: 'block', visibility: 'visible'}).animate({opacity: this.options.opacity}, 100);
  87                 } else {
  88                     $tip.css({visibility: 'visible', opacity: this.options.opacity});
  89                 }
  90             }
  91         },
  92
  93         hide: function() {
  94             if (this.options.fade) {
  95                 this.tip().stop().fadeOut(100, function() { $(this).remove(); });
  96             } else {
  97                 this.tip().remove();
  98             }
  99         },
 100
 101
 102         fixTitle: function() {
 103             var $e = this.$element;
 104             if ($e.attr('title') || typeof($e.attr('original-title')) != 'string') {
 105                 $e.attr('original-title', $e.attr('title') || '').removeAttr('title');
 106             }
 107         },
 108
 109         getTitle: function() {
 110             var title, $e = this.$element, o = this.options;
 111             this.fixTitle();
 112             if (typeof o.title == 'string') {
 113                 title = $e.attr(o.title == 'title' ? 'original-title' : o.title);
 114             } else if (typeof o.title == 'function') {
 115                 title = o.title.call($e[0]);
 116             }
 117             title = ('' + title).replace(/(^\s*|\s*$)/, "");
 118             return title || o.fallback;
 119         },
 120
 121         tip: function() {
 122             if (!this.$tip) {
 123                 this.$tip = $('<div class="tipsy"></div>').html('<div class="tipsy-arrow"></div><div class="tipsy-inner"></div>');
 124             }
 125             return this.$tip;
 126         },
 127
 128         validate: function() {
 129             if (!this.$element[0].parentNode) {
 130                 this.hide();
 131                 this.$element = null;
 132                 this.options = null;
 133             }
 134         },
 135
 136         enable: function() { this.enabled = true; },
 137         disable: function() { this.enabled = false; },
 138         toggleEnabled: function() { this.enabled = !this.enabled; }
 139     };
 140
 141     $.fn.tipsy = function(options) {
 142
 143         if (options === true) {
 144             return this.data('tipsy');
 145         } else if (typeof options == 'string') {
 146             var tipsy = this.data('tipsy');
 147             if (tipsy) tipsy[options]();
 148             return this;
 149         }
 150
 151         options = $.extend({}, $.fn.tipsy.defaults, options);
 152
 153         function get(ele) {
 154             var tipsy = $.data(ele, 'tipsy');
 155             if (!tipsy) {
 156                 tipsy = new Tipsy(ele, $.fn.tipsy.elementOptions(ele, options));
 157                 $.data(ele, 'tipsy', tipsy);
 158             }
 159             return tipsy;
 160         }
 161
 162         function enter() {
 163             var tipsy = get(this);
 164             tipsy.hoverState = 'in';
 165             if (options.delayIn == 0) {
 166                 tipsy.show();
 167             } else {
 168                 tipsy.fixTitle();
 169                 setTimeout(function() { if (tipsy.hoverState == 'in') tipsy.show(); }, options.delayIn);
 170             }
 171         };
 172
 173         function leave() {
 174             var tipsy = get(this);
 175             tipsy.hoverState = 'out';
 176             if (options.delayOut == 0) {
 177                 tipsy.hide();
 178             } else {
 179                 setTimeout(function() { if (tipsy.hoverState == 'out') tipsy.hide(); }, options.delayOut);
 180             }
 181         };
 182
 183         if (!options.live) this.each(function() { get(this); });
 184
 185         if (options.trigger != 'manual') {
 186             var binder   = options.live ? 'live' : 'bind',
 187                 eventIn  = options.trigger == 'hover' ? 'mouseenter' : 'focus',
 188                 eventOut = options.trigger == 'hover' ? 'mouseleave' : 'blur';
 189             this[binder](eventIn, enter)[binder](eventOut, leave);
 190         }
 191
 192         return this;
 193
 194     };
 195
 196     $.fn.tipsy.defaults = {
 197         className: null,
 198         delayIn: 0,
 199         delayOut: 0,
 200         fade: true,
 201         fallback: '',
 202         gravity: 'n',
 203         center: true,
 204         html: false,
 205         live: false,
 206         offset: 0,
 207         opacity: 1.0,
 208         title: 'title',
 209         trigger: 'hover'
 210     };
 211
 212     // Overwrite this method to provide options on a per-element basis.
 213     // For example, you could store the gravity in a 'tipsy-gravity' attribute:
 214     // return $.extend({}, options, {gravity: $(ele).attr('tipsy-gravity') || 'n' });
 215     // (remember - do not modify 'options' in place!)
 216     $.fn.tipsy.elementOptions = function(ele, options) {
 217         return $.metadata ? $.extend({}, options, $(ele).metadata()) : options;
 218     };
 219
 220     $.fn.tipsy.autoNS = function() {
 221         return $(this).offset().top > ($(document).scrollTop() + $(window).height() / 2) ? 's' : 'n';
 222     };
 223
 224     $.fn.tipsy.autoWE = function() {
 225         return $(this).offset().left > ($(document).scrollLeft() + $(window).width() / 2) ? 'e' : 'w';
 226     };
 227
 228     /**
 229      * yields a closure of the supplied parameters, producing a function that takes
 230      * no arguments and is suitable for use as an autogravity function like so:
 231      *
 232      * @param margin (int) - distance from the viewable region edge that an
 233      *        element should be before setting its tooltip's gravity to be away
 234      *        from that edge.
 235      * @param prefer (string, e.g. 'n', 'sw', 'w') - the direction to prefer
 236      *        if there are no viewable region edges effecting the tooltip's
 237      *        gravity. It will try to vary from this minimally, for example,
 238      *        if 'sw' is preferred and an element is near the right viewable
 239      *        region edge, but not the top edge, it will set the gravity for
 240      *        that element's tooltip to be 'se', preserving the southern
 241      *        component.
 242      */
 243      $.fn.tipsy.autoBounds = function(margin, prefer) {
 244         return function() {
 245             var dir = {ns: prefer[0], ew: (prefer.length > 1 ? prefer[1] : false)},
 246                 boundTop = $(document).scrollTop() + margin,
 247                 boundLeft = $(document).scrollLeft() + margin,
 248                 $this = $(this);
 249
 250             if ($this.offset().top < boundTop) dir.ns = 'n';
 251             if ($this.offset().left < boundLeft) dir.ew = 'w';
 252             if ($(window).width() + $(document).scrollLeft() - $this.offset().left < margin) dir.ew = 'e';
 253             if ($(window).height() + $(document).scrollTop() - $this.offset().top < margin) dir.ns = 's';
 254
 255             return dir.ns + (dir.ew ? dir.ew : '');
 256         }
 257     };
 258
 259 })(jQuery);