mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/MultimediaViewer
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c0bf3591f8
Change-Id: Ica8c5ae8c8f34374e946246878f3c8609d263a12 Mingle: https://wikimedia.mingle.thoughtworks.com/projects/multimedia/cards/80
187 lines
5.2 KiB
JavaScript
187 lines
5.2 KiB
JavaScript
/*!
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* jQuery.ScrollTo
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* Copyright (c) 2007-2014 Ariel Flesler - aflesler<a>gmail<d>com | http://flesler.blogspot.com
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* Licensed under MIT
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* http://flesler.blogspot.com/2007/10/jqueryscrollto.html
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* @projectDescription Easy element scrolling using jQuery.
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* @author Ariel Flesler
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* @version 1.4.9
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*/
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;(function (factory) {
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// AMD Support
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if (typeof define === 'function' && define.amd) {
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define(['jquery'], factory);
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} else {
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factory(jQuery);
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}
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}(function ($) {
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var $scrollTo = $.scrollTo = function( target, duration, settings ) {
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return $(window).scrollTo( target, duration, settings );
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};
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$scrollTo.defaults = {
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axis:'xy',
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duration: parseFloat($.fn.jquery) >= 1.3 ? 0 : 1,
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limit:true
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};
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// Returns the element that needs to be animated to scroll the window.
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// Kept for backwards compatibility (specially for localScroll & serialScroll)
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$scrollTo.window = function( scope ) {
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return $(window)._scrollable();
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};
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// Hack, hack, hack :)
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// Returns the real elements to scroll (supports window/iframes, documents and regular nodes)
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$.fn._scrollable = function() {
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return this.map(function() {
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var elem = this,
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isWin = !elem.nodeName || $.inArray( elem.nodeName.toLowerCase(), ['iframe','#document','html','body'] ) != -1;
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if (!isWin)
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return elem;
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var doc = (elem.contentWindow || elem).document || elem.ownerDocument || elem;
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return /webkit/i.test(navigator.userAgent) || doc.compatMode == 'BackCompat' ?
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doc.body :
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doc.documentElement;
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});
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};
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$.fn.scrollTo = function( target, duration, settings ) {
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if (typeof duration == 'object') {
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settings = duration;
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duration = 0;
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}
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if (typeof settings == 'function')
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settings = { onAfter:settings };
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if (target == 'max')
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target = 9e9;
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settings = $.extend( {}, $scrollTo.defaults, settings );
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// Speed is still recognized for backwards compatibility
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duration = duration || settings.duration;
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// Make sure the settings are given right
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settings.queue = settings.queue && settings.axis.length > 1;
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if (settings.queue)
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// Let's keep the overall duration
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duration /= 2;
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settings.offset = both( settings.offset );
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settings.over = both( settings.over );
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return this._scrollable().each(function() {
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// Null target yields nothing, just like jQuery does
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if (target == null) return;
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var elem = this,
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$elem = $(elem),
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targ = target, toff, attr = {},
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win = $elem.is('html,body');
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switch (typeof targ) {
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// A number will pass the regex
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case 'number':
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case 'string':
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if (/^([+-]=?)?\d+(\.\d+)?(px|%)?$/.test(targ)) {
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targ = both( targ );
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// We are done
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break;
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}
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// Relative selector, no break!
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targ = $(targ,this);
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if (!targ.length) return;
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case 'object':
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// DOMElement / jQuery
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if (targ.is || targ.style)
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// Get the real position of the target
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toff = (targ = $(targ)).offset();
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}
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var offset = $.isFunction(settings.offset) && settings.offset(elem, targ) || settings.offset;
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$.each( settings.axis.split(''), function( i, axis ) {
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var Pos = axis == 'x' ? 'Left' : 'Top',
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pos = Pos.toLowerCase(),
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key = 'scroll' + Pos,
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old = elem[key],
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max = $scrollTo.max(elem, axis);
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if (toff) {// jQuery / DOMElement
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attr[key] = toff[pos] + ( win ? 0 : old - $elem.offset()[pos] );
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// If it's a dom element, reduce the margin
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if (settings.margin) {
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attr[key] -= parseInt(targ.css('margin'+Pos)) || 0;
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attr[key] -= parseInt(targ.css('border'+Pos+'Width')) || 0;
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}
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attr[key] += offset[pos] || 0;
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if(settings.over[pos])
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// Scroll to a fraction of its width/height
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attr[key] += targ[axis=='x'?'width':'height']() * settings.over[pos];
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} else {
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var val = targ[pos];
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// Handle percentage values
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attr[key] = val.slice && val.slice(-1) == '%' ?
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parseFloat(val) / 100 * max
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: val;
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}
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// Number or 'number'
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if (settings.limit && /^\d+$/.test(attr[key]))
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// Check the limits
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attr[key] = attr[key] <= 0 ? 0 : Math.min( attr[key], max );
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// Queueing axes
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if (!i && settings.queue) {
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// Don't waste time animating, if there's no need.
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if (old != attr[key])
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// Intermediate animation
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animate( settings.onAfterFirst );
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// Don't animate this axis again in the next iteration.
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delete attr[key];
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}
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});
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animate( settings.onAfter );
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function animate( callback ) {
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$elem.animate( attr, duration, settings.easing, callback && function() {
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callback.call(this, targ, settings);
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});
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};
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}).end();
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};
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// Max scrolling position, works on quirks mode
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// It only fails (not too badly) on IE, quirks mode.
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$scrollTo.max = function( elem, axis ) {
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var Dim = axis == 'x' ? 'Width' : 'Height',
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scroll = 'scroll'+Dim;
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if (!$(elem).is('html,body'))
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return elem[scroll] - $(elem)[Dim.toLowerCase()]();
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var size = 'client' + Dim,
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html = elem.ownerDocument.documentElement,
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body = elem.ownerDocument.body;
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return Math.max( html[scroll], body[scroll] )
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- Math.min( html[size] , body[size] );
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};
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function both( val ) {
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return $.isFunction(val) || typeof val == 'object' ? val : { top:val, left:val };
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};
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// AMD requirement
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return $scrollTo;
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}));
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