diff options
Diffstat (limited to 'vendor/assets/javascripts/jquery.scrollTo.js')
| -rwxr-xr-x | vendor/assets/javascripts/jquery.scrollTo.js | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/vendor/assets/javascripts/jquery.scrollTo.js b/vendor/assets/javascripts/jquery.scrollTo.js new file mode 100755 index 00000000000..7ba17766b70 --- /dev/null +++ b/vendor/assets/javascripts/jquery.scrollTo.js @@ -0,0 +1,210 @@ +/*! + * jQuery.scrollTo + * Copyright (c) 2007-2015 Ariel Flesler - aflesler<a>gmail<d>com | http://flesler.blogspot.com + * Licensed under MIT + * http://flesler.blogspot.com/2007/10/jqueryscrollto.html + * @projectDescription Lightweight, cross-browser and highly customizable animated scrolling with jQuery + * @author Ariel Flesler + * @version 2.1.2 + */ +;(function(factory) { + 'use strict'; + if (typeof define === 'function' && define.amd) { + // AMD + define(['jquery'], factory); + } else if (typeof module !== 'undefined' && module.exports) { + // CommonJS + module.exports = factory(require('jquery')); + } else { + // Global + factory(jQuery); + } +})(function($) { + 'use strict'; + + var $scrollTo = $.scrollTo = function(target, duration, settings) { + return $(window).scrollTo(target, duration, settings); + }; + + $scrollTo.defaults = { + axis:'xy', + duration: 0, + limit:true + }; + + function isWin(elem) { + return !elem.nodeName || + $.inArray(elem.nodeName.toLowerCase(), ['iframe','#document','html','body']) !== -1; + } + + $.fn.scrollTo = function(target, duration, settings) { + if (typeof duration === 'object') { + settings = duration; + duration = 0; + } + if (typeof settings === 'function') { + settings = { onAfter:settings }; + } + if (target === 'max') { + target = 9e9; + } + + settings = $.extend({}, $scrollTo.defaults, settings); + // Speed is still recognized for backwards compatibility + duration = duration || settings.duration; + // Make sure the settings are given right + var queue = settings.queue && settings.axis.length > 1; + if (queue) { + // Let's keep the overall duration + duration /= 2; + } + settings.offset = both(settings.offset); + settings.over = both(settings.over); + + return this.each(function() { + // Null target yields nothing, just like jQuery does + if (target === null) return; + + var win = isWin(this), + elem = win ? this.contentWindow || window : this, + $elem = $(elem), + targ = target, + attr = {}, + toff; + + switch (typeof targ) { + // A number will pass the regex + case 'number': + case 'string': + if (/^([+-]=?)?\d+(\.\d+)?(px|%)?$/.test(targ)) { + targ = both(targ); + // We are done + break; + } + // Relative/Absolute selector + targ = win ? $(targ) : $(targ, elem); + /* falls through */ + case 'object': + if (targ.length === 0) return; + // DOMElement / jQuery + if (targ.is || targ.style) { + // Get the real position of the target + toff = (targ = $(targ)).offset(); + } + } + + var offset = $.isFunction(settings.offset) && settings.offset(elem, targ) || settings.offset; + + $.each(settings.axis.split(''), function(i, axis) { + var Pos = axis === 'x' ? 'Left' : 'Top', + pos = Pos.toLowerCase(), + key = 'scroll' + Pos, + prev = $elem[key](), + max = $scrollTo.max(elem, axis); + + if (toff) {// jQuery / DOMElement + attr[key] = toff[pos] + (win ? 0 : prev - $elem.offset()[pos]); + + // If it's a dom element, reduce the margin + if (settings.margin) { + attr[key] -= parseInt(targ.css('margin'+Pos), 10) || 0; + attr[key] -= parseInt(targ.css('border'+Pos+'Width'), 10) || 0; + } + + attr[key] += offset[pos] || 0; + + if (settings.over[pos]) { + // Scroll to a fraction of its width/height + attr[key] += targ[axis === 'x'?'width':'height']() * settings.over[pos]; + } + } else { + var val = targ[pos]; + // Handle percentage values + attr[key] = val.slice && val.slice(-1) === '%' ? + parseFloat(val) / 100 * max + : val; + } + + // Number or 'number' + if (settings.limit && /^\d+$/.test(attr[key])) { + // Check the limits + attr[key] = attr[key] <= 0 ? 0 : Math.min(attr[key], max); + } + + // Don't waste time animating, if there's no need. + if (!i && settings.axis.length > 1) { + if (prev === attr[key]) { + // No animation needed + attr = {}; + } else if (queue) { + // Intermediate animation + animate(settings.onAfterFirst); + // Don't animate this axis again in the next iteration. + attr = {}; + } + } + }); + + animate(settings.onAfter); + + function animate(callback) { + var opts = $.extend({}, settings, { + // The queue setting conflicts with animate() + // Force it to always be true + queue: true, + duration: duration, + complete: callback && function() { + callback.call(elem, targ, settings); + } + }); + $elem.animate(attr, opts); + } + }); + }; + + // Max scrolling position, works on quirks mode + // It only fails (not too badly) on IE, quirks mode. + $scrollTo.max = function(elem, axis) { + var Dim = axis === 'x' ? 'Width' : 'Height', + scroll = 'scroll'+Dim; + + if (!isWin(elem)) + return elem[scroll] - $(elem)[Dim.toLowerCase()](); + + var size = 'client' + Dim, + doc = elem.ownerDocument || elem.document, + html = doc.documentElement, + body = doc.body; + + return Math.max(html[scroll], body[scroll]) - Math.min(html[size], body[size]); + }; + + function both(val) { + return $.isFunction(val) || $.isPlainObject(val) ? val : { top:val, left:val }; + } + + // Add special hooks so that window scroll properties can be animated + $.Tween.propHooks.scrollLeft = + $.Tween.propHooks.scrollTop = { + get: function(t) { + return $(t.elem)[t.prop](); + }, + set: function(t) { + var curr = this.get(t); + // If interrupt is true and user scrolled, stop animating + if (t.options.interrupt && t._last && t._last !== curr) { + return $(t.elem).stop(); + } + var next = Math.round(t.now); + // Don't waste CPU + // Browsers don't render floating point scroll + if (curr !== next) { + $(t.elem)[t.prop](next); + t._last = this.get(t); + } + } + }; + + // AMD requirement + return $scrollTo; +}); |