Skip to content

C
CuotasPagoAcademia
Switch branch/tag
Find file
Normal viewHistoryPermalink
jquery.smooth-scroll.js 7.88 KB
Newer Older
cuotas pago academia
fd942ba8
 
Angel Flores Chombile committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 
/*!
 * jQuery Smooth Scroll - v1.5.4 - 2014-11-17
 * https://github.com/kswedberg/jquery-smooth-scroll
 * Copyright (c) 2014 Karl Swedberg
 * Licensed MIT (https://github.com/kswedberg/jquery-smooth-scroll/blob/master/LICENSE-MIT)
 */

(function (factory) {
  if (typeof define === 'function' && define.amd) {
    // AMD. Register as an anonymous module.
    define(['jquery'], factory);
  } else {
    // Browser globals
    factory(jQuery);
  }
}(function ($) {

  var version = '1.5.4',
      optionOverrides = {},
      defaults = {
        exclude: [],
        excludeWithin:[],
        offset: 0,

        // one of 'top' or 'left'
        direction: 'top',

        // jQuery set of elements you wish to scroll (for $.smoothScroll).
        //  if null (default), $('html, body').firstScrollable() is used.
        scrollElement: null,

        // only use if you want to override default behavior
        scrollTarget: null,

        // fn(opts) function to be called before scrolling occurs.
        // `this` is the element(s) being scrolled
        beforeScroll: function() {},

        // fn(opts) function to be called after scrolling occurs.
        // `this` is the triggering element
        afterScroll: function() {},
        easing: 'swing',
        speed: 400,

        // coefficient for "auto" speed
        autoCoefficient: 2,

        // $.fn.smoothScroll only: whether to prevent the default click action
        preventDefault: true
      },

      getScrollable = function(opts) {
        var scrollable = [],
            scrolled = false,
            dir = opts.dir && opts.dir === 'left' ? 'scrollLeft' : 'scrollTop';

        this.each(function() {

          if (this === document || this === window) { return; }
          var el = $(this);
          if ( el[dir]() > 0 ) {
            scrollable.push(this);
          } else {
            // if scroll(Top|Left) === 0, nudge the element 1px and see if it moves
            el[dir](1);
            scrolled = el[dir]() > 0;
            if ( scrolled ) {
              scrollable.push(this);
            }
            // then put it back, of course
            el[dir](0);
          }
        });

        // If no scrollable elements, fall back to <body>,
        // if it's in the jQuery collection
        // (doing this because Safari sets scrollTop async,
        // so can't set it to 1 and immediately get the value.)
        if (!scrollable.length) {
          this.each(function() {
            if (this.nodeName === 'BODY') {
              scrollable = [this];
            }
          });
        }

        // Use the first scrollable element if we're calling firstScrollable()
        if ( opts.el === 'first' && scrollable.length > 1 ) {
          scrollable = [ scrollable[0] ];
        }

        return scrollable;
      };

  $.fn.extend({
    scrollable: function(dir) {
      var scrl = getScrollable.call(this, {dir: dir});
      return this.pushStack(scrl);
    },
    firstScrollable: function(dir) {
      var scrl = getScrollable.call(this, {el: 'first', dir: dir});
      return this.pushStack(scrl);
    },

    smoothScroll: function(options, extra) {
      options = options || {};

      if ( options === 'options' ) {
        if ( !extra ) {
          return this.first().data('ssOpts');
        }
        return this.each(function() {
          var $this = $(this),
              opts = $.extend($this.data('ssOpts') || {}, extra);

          $(this).data('ssOpts', opts);
        });
      }

      var opts = $.extend({}, $.fn.smoothScroll.defaults, options),
          locationPath = $.smoothScroll.filterPath(location.pathname);

      this
      .unbind('click.smoothscroll')
      .bind('click.smoothscroll', function(event) {
        var link = this,
            $link = $(this),
            thisOpts = $.extend({}, opts, $link.data('ssOpts') || {}),
            exclude = opts.exclude,
            excludeWithin = thisOpts.excludeWithin,
            elCounter = 0, ewlCounter = 0,
            include = true,
            clickOpts = {},
            hostMatch = ((location.hostname === link.hostname) || !link.hostname),
            pathMatch = thisOpts.scrollTarget || ( $.smoothScroll.filterPath(link.pathname) === locationPath ),
            thisHash = escapeSelector(link.hash);

        if ( !thisOpts.scrollTarget && (!hostMatch || !pathMatch || !thisHash) ) {
          include = false;
        } else {
          while (include && elCounter < exclude.length) {
            if ($link.is(escapeSelector(exclude[elCounter++]))) {
              include = false;
            }
          }
          while ( include && ewlCounter < excludeWithin.length ) {
            if ($link.closest(excludeWithin[ewlCounter++]).length) {
              include = false;
            }
          }
        }

        if ( include ) {

          if ( thisOpts.preventDefault ) {
            event.preventDefault();
          }

          $.extend( clickOpts, thisOpts, {
            scrollTarget: thisOpts.scrollTarget || thisHash,
            link: link
          });

          $.smoothScroll( clickOpts );
        }
      });

      return this;
    }
  });

  $.smoothScroll = function(options, px) {
    if ( options === 'options' && typeof px === 'object' ) {
      return $.extend(optionOverrides, px);
    }
    var opts, $scroller, scrollTargetOffset, speed, delta,
        scrollerOffset = 0,
        offPos = 'offset',
        scrollDir = 'scrollTop',
        aniProps = {},
        aniOpts = {};

    if (typeof options === 'number') {
      opts = $.extend({link: null}, $.fn.smoothScroll.defaults, optionOverrides);
      scrollTargetOffset = options;
    } else {
      opts = $.extend({link: null}, $.fn.smoothScroll.defaults, options || {}, optionOverrides);
      if (opts.scrollElement) {
        offPos = 'position';
        if (opts.scrollElement.css('position') === 'static') {
          opts.scrollElement.css('position', 'relative');
        }
      }
    }

    scrollDir = opts.direction === 'left' ? 'scrollLeft' : scrollDir;

    if ( opts.scrollElement ) {
      $scroller = opts.scrollElement;
      if ( !(/^(?:HTML|BODY)$/).test($scroller[0].nodeName) ) {
        scrollerOffset = $scroller[scrollDir]();
      }
    } else {
      $scroller = $('html, body').firstScrollable(opts.direction);
    }

    // beforeScroll callback function must fire before calculating offset
    opts.beforeScroll.call($scroller, opts);

    scrollTargetOffset = (typeof options === 'number') ? options :
                          px ||
                          ( $(opts.scrollTarget)[offPos]() &&
                          $(opts.scrollTarget)[offPos]()[opts.direction] ) ||
                          0;

    aniProps[scrollDir] = scrollTargetOffset + scrollerOffset + opts.offset;
    speed = opts.speed;

    // automatically calculate the speed of the scroll based on distance / coefficient
    if (speed === 'auto') {

      // $scroller.scrollTop() is position before scroll, aniProps[scrollDir] is position after
      // When delta is greater, speed will be greater.
      delta = aniProps[scrollDir] - $scroller.scrollTop();
      if(delta < 0) {
        delta *= -1;
      }

      // Divide the delta by the coefficient
      speed = delta / opts.autoCoefficient;
    }

    aniOpts = {
      duration: speed,
      easing: opts.easing,
      complete: function() {
        opts.afterScroll.call(opts.link, opts);
      }
    };

    if (opts.step) {
      aniOpts.step = opts.step;
    }

    if ($scroller.length) {
      $scroller.stop().animate(aniProps, aniOpts);
    } else {
      opts.afterScroll.call(opts.link, opts);
    }
  };

  $.smoothScroll.version = version;
  $.smoothScroll.filterPath = function(string) {
    string = string || '';
    return string
      .replace(/^\//,'')
      .replace(/(?:index|default).[a-zA-Z]{3,4}$/,'')
      .replace(/\/$/,'');
  };

  // default options
  $.fn.smoothScroll.defaults = defaults;

  function escapeSelector (str) {
    return str.replace(/(:|\.|\/)/g,'\\$1');
  }

}));