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1230 lines
33 KiB
JavaScript
1230 lines
33 KiB
JavaScript
/*! iScroll v5.2.0-snapshot ~ (c) 2008-2017 Matteo Spinelli ~ http://cubiq.org/license */
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(function (window, document, Math) {
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var rAF = window.requestAnimationFrame ||
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window.webkitRequestAnimationFrame ||
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window.mozRequestAnimationFrame ||
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window.oRequestAnimationFrame ||
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window.msRequestAnimationFrame ||
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function (callback) { window.setTimeout(callback, 1000 / 60); };
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var utils = (function () {
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var me = {};
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var _elementStyle = document.createElement('div').style;
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var _vendor = (function () {
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var vendors = ['t', 'webkitT', 'MozT', 'msT', 'OT'],
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transform,
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i = 0,
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l = vendors.length;
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for ( ; i < l; i++ ) {
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transform = vendors[i] + 'ransform';
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if ( transform in _elementStyle ) return vendors[i].substr(0, vendors[i].length-1);
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}
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return false;
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})();
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function _prefixStyle (style) {
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if ( _vendor === false ) return false;
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if ( _vendor === '' ) return style;
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return _vendor + style.charAt(0).toUpperCase() + style.substr(1);
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}
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me.getTime = Date.now || function getTime () { return new Date().getTime(); };
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me.extend = function (target, obj) {
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for ( var i in obj ) {
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target[i] = obj[i];
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}
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};
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me.addEvent = function (el, type, fn, capture) {
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el.addEventListener(type, fn, !!capture);
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};
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me.removeEvent = function (el, type, fn, capture) {
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el.removeEventListener(type, fn, !!capture);
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};
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me.prefixPointerEvent = function (pointerEvent) {
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return window.MSPointerEvent ?
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'MSPointer' + pointerEvent.charAt(7).toUpperCase() + pointerEvent.substr(8):
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pointerEvent;
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};
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me.momentum = function (current, start, time, lowerMargin, wrapperSize, deceleration) {
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var distance = current - start,
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speed = Math.abs(distance) / time,
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destination,
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duration;
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deceleration = deceleration === undefined ? 0.0006 : deceleration;
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destination = current + ( speed * speed ) / ( 2 * deceleration ) * ( distance < 0 ? -1 : 1 );
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duration = speed / deceleration;
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if ( destination < lowerMargin ) {
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destination = wrapperSize ? lowerMargin - ( wrapperSize / 2.5 * ( speed / 8 ) ) : lowerMargin;
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distance = Math.abs(destination - current);
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duration = distance / speed;
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} else if ( destination > 0 ) {
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destination = wrapperSize ? wrapperSize / 2.5 * ( speed / 8 ) : 0;
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distance = Math.abs(current) + destination;
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duration = distance / speed;
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}
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return {
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destination: Math.round(destination),
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duration: duration
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};
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};
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var _transform = _prefixStyle('transform');
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me.extend(me, {
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hasTransform: _transform !== false,
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hasPerspective: _prefixStyle('perspective') in _elementStyle,
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hasTouch: 'ontouchstart' in window,
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hasPointer: !!(window.PointerEvent || window.MSPointerEvent), // IE10 is prefixed
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hasTransition: _prefixStyle('transition') in _elementStyle
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});
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/*
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This should find all Android browsers lower than build 535.19 (both stock browser and webview)
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- galaxy S2 is ok
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- 2.3.6 : `AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1`
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- 4.0.4 : `AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30`
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- galaxy S3 is badAndroid (stock brower, webview)
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`AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30`
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- galaxy S4 is badAndroid (stock brower, webview)
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`AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30`
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- galaxy S5 is OK
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`AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Mobile Safari/537.36 (Chrome/)`
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- galaxy S6 is OK
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`AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Mobile Safari/537.36 (Chrome/)`
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*/
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me.isBadAndroid = (function() {
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var appVersion = window.navigator.appVersion;
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// Android browser is not a chrome browser.
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if (/Android/.test(appVersion) && !(/Chrome\/\d/.test(appVersion))) {
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var safariVersion = appVersion.match(/Safari\/(\d+.\d)/);
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if(safariVersion && typeof safariVersion === "object" && safariVersion.length >= 2) {
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return parseFloat(safariVersion[1]) < 535.19;
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} else {
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return true;
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}
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} else {
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return false;
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}
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})();
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me.extend(me.style = {}, {
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transform: _transform,
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transitionTimingFunction: _prefixStyle('transitionTimingFunction'),
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transitionDuration: _prefixStyle('transitionDuration'),
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transitionDelay: _prefixStyle('transitionDelay'),
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transformOrigin: _prefixStyle('transformOrigin'),
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touchAction: _prefixStyle('touchAction')
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});
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me.hasClass = function (e, c) {
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var re = new RegExp("(^|\\s)" + c + "(\\s|$)");
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return re.test(e.className);
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};
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me.addClass = function (e, c) {
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if ( me.hasClass(e, c) ) {
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return;
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}
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var newclass = e.className.split(' ');
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newclass.push(c);
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e.className = newclass.join(' ');
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};
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me.removeClass = function (e, c) {
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if ( !me.hasClass(e, c) ) {
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return;
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}
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var re = new RegExp("(^|\\s)" + c + "(\\s|$)", 'g');
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e.className = e.className.replace(re, ' ');
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};
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me.offset = function (el) {
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var left = -el.offsetLeft,
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top = -el.offsetTop;
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// jshint -W084
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while (el = el.offsetParent) {
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left -= el.offsetLeft;
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top -= el.offsetTop;
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}
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// jshint +W084
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return {
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left: left,
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top: top
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};
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};
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me.preventDefaultException = function (el, exceptions) {
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for ( var i in exceptions ) {
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if ( exceptions[i].test(el[i]) ) {
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return true;
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}
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}
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return false;
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};
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me.extend(me.eventType = {}, {
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touchstart: 1,
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touchmove: 1,
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touchend: 1,
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mousedown: 2,
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mousemove: 2,
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mouseup: 2,
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pointerdown: 3,
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pointermove: 3,
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pointerup: 3,
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MSPointerDown: 3,
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MSPointerMove: 3,
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MSPointerUp: 3
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});
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me.extend(me.ease = {}, {
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quadratic: {
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style: 'cubic-bezier(0.25, 0.46, 0.45, 0.94)',
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fn: function (k) {
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return k * ( 2 - k );
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}
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},
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circular: {
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style: 'cubic-bezier(0.1, 0.57, 0.1, 1)', // Not properly "circular" but this looks better, it should be (0.075, 0.82, 0.165, 1)
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fn: function (k) {
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return Math.sqrt( 1 - ( --k * k ) );
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}
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},
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back: {
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style: 'cubic-bezier(0.175, 0.885, 0.32, 1.275)',
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fn: function (k) {
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var b = 4;
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return ( k = k - 1 ) * k * ( ( b + 1 ) * k + b ) + 1;
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}
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},
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bounce: {
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style: '',
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fn: function (k) {
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if ( ( k /= 1 ) < ( 1 / 2.75 ) ) {
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return 7.5625 * k * k;
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} else if ( k < ( 2 / 2.75 ) ) {
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return 7.5625 * ( k -= ( 1.5 / 2.75 ) ) * k + 0.75;
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} else if ( k < ( 2.5 / 2.75 ) ) {
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return 7.5625 * ( k -= ( 2.25 / 2.75 ) ) * k + 0.9375;
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} else {
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return 7.5625 * ( k -= ( 2.625 / 2.75 ) ) * k + 0.984375;
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}
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}
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},
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elastic: {
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style: '',
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fn: function (k) {
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var f = 0.22,
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e = 0.4;
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if ( k === 0 ) { return 0; }
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if ( k == 1 ) { return 1; }
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return ( e * Math.pow( 2, - 10 * k ) * Math.sin( ( k - f / 4 ) * ( 2 * Math.PI ) / f ) + 1 );
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}
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}
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});
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me.tap = function (e, eventName) {
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var ev = document.createEvent('Event');
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ev.initEvent(eventName, true, true);
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ev.pageX = e.pageX;
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ev.pageY = e.pageY;
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e.target.dispatchEvent(ev);
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};
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me.click = function (e) {
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var target = e.target,
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ev;
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if ( !(/(SELECT|INPUT|TEXTAREA)/i).test(target.tagName) ) {
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// https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/initMouseEvent
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// initMouseEvent is deprecated.
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ev = document.createEvent(window.MouseEvent ? 'MouseEvents' : 'Event');
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ev.initEvent('click', true, true);
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ev.view = e.view || window;
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ev.detail = 1;
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ev.screenX = target.screenX || 0;
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ev.screenY = target.screenY || 0;
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ev.clientX = target.clientX || 0;
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ev.clientY = target.clientY || 0;
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ev.ctrlKey = !!e.ctrlKey;
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ev.altKey = !!e.altKey;
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ev.shiftKey = !!e.shiftKey;
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ev.metaKey = !!e.metaKey;
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ev.button = 0;
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ev.relatedTarget = null;
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ev._constructed = true;
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target.dispatchEvent(ev);
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}
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};
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me.getTouchAction = function(eventPassthrough, addPinch) {
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var touchAction = 'none';
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if ( eventPassthrough === 'vertical' ) {
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touchAction = 'pan-y';
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} else if (eventPassthrough === 'horizontal' ) {
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touchAction = 'pan-x';
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}
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if (addPinch && touchAction != 'none') {
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// add pinch-zoom support if the browser supports it, but if not (eg. Chrome <55) do nothing
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touchAction += ' pinch-zoom';
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}
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return touchAction;
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};
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me.getRect = function(el) {
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if (el instanceof SVGElement) {
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var rect = el.getBoundingClientRect();
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return {
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top : rect.top,
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left : rect.left,
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width : rect.width,
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height : rect.height
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};
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} else {
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return {
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top : el.offsetTop,
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left : el.offsetLeft,
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width : el.offsetWidth,
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height : el.offsetHeight
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};
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}
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};
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return me;
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})();
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function IScroll (el, options) {
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this.wrapper = typeof el == 'string' ? document.querySelector(el) : el;
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this.scroller = this.wrapper.children[0];
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this.scrollerStyle = this.scroller.style; // cache style for better performance
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this.options = {
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// INSERT POINT: OPTIONS
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disablePointer : !utils.hasPointer,
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disableTouch : utils.hasPointer || !utils.hasTouch,
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disableMouse : utils.hasPointer || utils.hasTouch,
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startX: 0,
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startY: 0,
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scrollY: true,
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directionLockThreshold: 5,
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momentum: true,
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bounce: true,
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bounceTime: 600,
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bounceEasing: '',
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preventDefault: true,
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preventDefaultException: { tagName: /^(INPUT|TEXTAREA|BUTTON|SELECT)$/ },
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HWCompositing: true,
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useTransition: true,
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useTransform: true,
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bindToWrapper: typeof window.onmousedown === "undefined"
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};
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for ( var i in options ) {
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this.options[i] = options[i];
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}
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// Normalize options
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this.translateZ = this.options.HWCompositing && utils.hasPerspective ? ' translateZ(0)' : '';
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this.options.useTransition = utils.hasTransition && this.options.useTransition;
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this.options.useTransform = utils.hasTransform && this.options.useTransform;
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this.options.eventPassthrough = this.options.eventPassthrough === true ? 'vertical' : this.options.eventPassthrough;
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this.options.preventDefault = !this.options.eventPassthrough && this.options.preventDefault;
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// If you want eventPassthrough I have to lock one of the axes
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this.options.scrollY = this.options.eventPassthrough == 'vertical' ? false : this.options.scrollY;
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this.options.scrollX = this.options.eventPassthrough == 'horizontal' ? false : this.options.scrollX;
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// With eventPassthrough we also need lockDirection mechanism
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this.options.freeScroll = this.options.freeScroll && !this.options.eventPassthrough;
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this.options.directionLockThreshold = this.options.eventPassthrough ? 0 : this.options.directionLockThreshold;
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this.options.bounceEasing = typeof this.options.bounceEasing == 'string' ? utils.ease[this.options.bounceEasing] || utils.ease.circular : this.options.bounceEasing;
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this.options.resizePolling = this.options.resizePolling === undefined ? 60 : this.options.resizePolling;
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if ( this.options.tap === true ) {
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this.options.tap = 'tap';
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}
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// https://github.com/cubiq/iscroll/issues/1029
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if (!this.options.useTransition && !this.options.useTransform) {
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if(!(/relative|absolute/i).test(this.scrollerStyle.position)) {
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this.scrollerStyle.position = "relative";
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}
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}
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// INSERT POINT: NORMALIZATION
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// Some defaults
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this.x = 0;
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this.y = 0;
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this.directionX = 0;
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this.directionY = 0;
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this._events = {};
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// INSERT POINT: DEFAULTS
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this._init();
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this.refresh();
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this.scrollTo(this.options.startX, this.options.startY);
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this.enable();
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}
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IScroll.prototype = {
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version: '5.2.0-snapshot',
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_init: function () {
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this._initEvents();
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// INSERT POINT: _init
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},
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destroy: function () {
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this._initEvents(true);
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clearTimeout(this.resizeTimeout);
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this.resizeTimeout = null;
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this._execEvent('destroy');
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},
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_transitionEnd: function (e) {
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if ( e.target != this.scroller || !this.isInTransition ) {
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return;
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}
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this._transitionTime();
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if ( !this.resetPosition(this.options.bounceTime) ) {
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this.isInTransition = false;
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this._execEvent('scrollEnd');
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}
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},
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_start: function (e) {
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// React to left mouse button only
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if ( utils.eventType[e.type] != 1 ) {
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// for button property
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// http://unixpapa.com/js/mouse.html
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var button;
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if (!e.which) {
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/* IE case */
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button = (e.button < 2) ? 0 :
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((e.button == 4) ? 1 : 2);
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} else {
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/* All others */
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button = e.button;
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}
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if ( button !== 0 ) {
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return;
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}
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}
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if ( !this.enabled || (this.initiated && utils.eventType[e.type] !== this.initiated) ) {
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return;
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}
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if ( this.options.preventDefault && !utils.isBadAndroid && !utils.preventDefaultException(e.target, this.options.preventDefaultException) ) {
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e.preventDefault();
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}
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var point = e.touches ? e.touches[0] : e,
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pos;
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this.initiated = utils.eventType[e.type];
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this.moved = false;
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this.distX = 0;
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this.distY = 0;
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this.directionX = 0;
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this.directionY = 0;
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this.directionLocked = 0;
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this.startTime = utils.getTime();
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if ( this.options.useTransition && this.isInTransition ) {
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this._transitionTime();
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this.isInTransition = false;
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pos = this.getComputedPosition();
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this._translate(Math.round(pos.x), Math.round(pos.y));
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this._execEvent('scrollEnd');
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} else if ( !this.options.useTransition && this.isAnimating ) {
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this.isAnimating = false;
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this._execEvent('scrollEnd');
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}
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this.startX = this.x;
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this.startY = this.y;
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this.absStartX = this.x;
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this.absStartY = this.y;
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this.pointX = point.pageX;
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this.pointY = point.pageY;
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this._execEvent('beforeScrollStart');
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},
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_move: function (e) {
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if ( !this.enabled || utils.eventType[e.type] !== this.initiated ) {
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return;
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}
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if ( this.options.preventDefault ) { // increases performance on Android? TODO: check!
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e.preventDefault();
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}
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var point = e.touches ? e.touches[0] : e,
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deltaX = point.pageX - this.pointX,
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deltaY = point.pageY - this.pointY,
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timestamp = utils.getTime(),
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newX, newY,
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absDistX, absDistY;
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this.pointX = point.pageX;
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this.pointY = point.pageY;
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this.distX += deltaX;
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this.distY += deltaY;
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absDistX = Math.abs(this.distX);
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absDistY = Math.abs(this.distY);
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// We need to move at least 10 pixels for the scrolling to initiate
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if ( timestamp - this.endTime > 300 && (absDistX < 10 && absDistY < 10) ) {
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return;
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}
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|
|
|
// If you are scrolling in one direction lock the other
|
|
if ( !this.directionLocked && !this.options.freeScroll ) {
|
|
if ( absDistX > absDistY + this.options.directionLockThreshold ) {
|
|
this.directionLocked = 'h'; // lock horizontally
|
|
} else if ( absDistY >= absDistX + this.options.directionLockThreshold ) {
|
|
this.directionLocked = 'v'; // lock vertically
|
|
} else {
|
|
this.directionLocked = 'n'; // no lock
|
|
}
|
|
}
|
|
|
|
if ( this.directionLocked == 'h' ) {
|
|
if ( this.options.eventPassthrough == 'vertical' ) {
|
|
e.preventDefault();
|
|
} else if ( this.options.eventPassthrough == 'horizontal' ) {
|
|
this.initiated = false;
|
|
return;
|
|
}
|
|
|
|
deltaY = 0;
|
|
} else if ( this.directionLocked == 'v' ) {
|
|
if ( this.options.eventPassthrough == 'horizontal' ) {
|
|
e.preventDefault();
|
|
} else if ( this.options.eventPassthrough == 'vertical' ) {
|
|
this.initiated = false;
|
|
return;
|
|
}
|
|
|
|
deltaX = 0;
|
|
}
|
|
|
|
deltaX = this.hasHorizontalScroll ? deltaX : 0;
|
|
deltaY = this.hasVerticalScroll ? deltaY : 0;
|
|
|
|
newX = this.x + deltaX;
|
|
newY = this.y + deltaY;
|
|
|
|
// Slow down if outside of the boundaries
|
|
if ( newX > 0 || newX < this.maxScrollX ) {
|
|
newX = this.options.bounce ? this.x + deltaX / 3 : newX > 0 ? 0 : this.maxScrollX;
|
|
}
|
|
if ( newY > 0 || newY < this.maxScrollY ) {
|
|
newY = this.options.bounce ? this.y + deltaY / 3 : newY > 0 ? 0 : this.maxScrollY;
|
|
}
|
|
|
|
this.directionX = deltaX > 0 ? -1 : deltaX < 0 ? 1 : 0;
|
|
this.directionY = deltaY > 0 ? -1 : deltaY < 0 ? 1 : 0;
|
|
|
|
if ( !this.moved ) {
|
|
this._execEvent('scrollStart');
|
|
}
|
|
|
|
this.moved = true;
|
|
|
|
this._translate(newX, newY);
|
|
|
|
/* REPLACE START: _move */
|
|
|
|
if ( timestamp - this.startTime > 300 ) {
|
|
this.startTime = timestamp;
|
|
this.startX = this.x;
|
|
this.startY = this.y;
|
|
}
|
|
|
|
/* REPLACE END: _move */
|
|
|
|
},
|
|
|
|
_end: function (e) {
|
|
if ( !this.enabled || utils.eventType[e.type] !== this.initiated ) {
|
|
return;
|
|
}
|
|
|
|
if ( this.options.preventDefault && !utils.preventDefaultException(e.target, this.options.preventDefaultException) ) {
|
|
e.preventDefault();
|
|
}
|
|
|
|
var point = e.changedTouches ? e.changedTouches[0] : e,
|
|
momentumX,
|
|
momentumY,
|
|
duration = utils.getTime() - this.startTime,
|
|
newX = Math.round(this.x),
|
|
newY = Math.round(this.y),
|
|
distanceX = Math.abs(newX - this.startX),
|
|
distanceY = Math.abs(newY - this.startY),
|
|
time = 0,
|
|
easing = '';
|
|
|
|
this.isInTransition = 0;
|
|
this.initiated = 0;
|
|
this.endTime = utils.getTime();
|
|
|
|
// reset if we are outside of the boundaries
|
|
if ( this.resetPosition(this.options.bounceTime) ) {
|
|
return;
|
|
}
|
|
|
|
this.scrollTo(newX, newY); // ensures that the last position is rounded
|
|
|
|
// we scrolled less than 10 pixels
|
|
if ( !this.moved ) {
|
|
if ( this.options.tap ) {
|
|
utils.tap(e, this.options.tap);
|
|
}
|
|
|
|
if ( this.options.click ) {
|
|
utils.click(e);
|
|
}
|
|
|
|
this._execEvent('scrollCancel');
|
|
return;
|
|
}
|
|
|
|
if ( this._events.flick && duration < 200 && distanceX < 100 && distanceY < 100 ) {
|
|
this._execEvent('flick');
|
|
return;
|
|
}
|
|
|
|
// start momentum animation if needed
|
|
if ( this.options.momentum && duration < 300 ) {
|
|
momentumX = this.hasHorizontalScroll ? utils.momentum(this.x, this.startX, duration, this.maxScrollX, this.options.bounce ? this.wrapperWidth : 0, this.options.deceleration) : { destination: newX, duration: 0 };
|
|
momentumY = this.hasVerticalScroll ? utils.momentum(this.y, this.startY, duration, this.maxScrollY, this.options.bounce ? this.wrapperHeight : 0, this.options.deceleration) : { destination: newY, duration: 0 };
|
|
newX = momentumX.destination;
|
|
newY = momentumY.destination;
|
|
time = Math.max(momentumX.duration, momentumY.duration);
|
|
this.isInTransition = 1;
|
|
}
|
|
|
|
// INSERT POINT: _end
|
|
|
|
if ( newX != this.x || newY != this.y ) {
|
|
// change easing function when scroller goes out of the boundaries
|
|
if ( newX > 0 || newX < this.maxScrollX || newY > 0 || newY < this.maxScrollY ) {
|
|
easing = utils.ease.quadratic;
|
|
}
|
|
|
|
this.scrollTo(newX, newY, time, easing);
|
|
return;
|
|
}
|
|
|
|
this._execEvent('scrollEnd');
|
|
},
|
|
|
|
_resize: function () {
|
|
var that = this;
|
|
|
|
clearTimeout(this.resizeTimeout);
|
|
|
|
this.resizeTimeout = setTimeout(function () {
|
|
that.refresh();
|
|
}, this.options.resizePolling);
|
|
},
|
|
|
|
resetPosition: function (time) {
|
|
var x = this.x,
|
|
y = this.y;
|
|
|
|
time = time || 0;
|
|
|
|
if ( !this.hasHorizontalScroll || this.x > 0 ) {
|
|
x = 0;
|
|
} else if ( this.x < this.maxScrollX ) {
|
|
x = this.maxScrollX;
|
|
}
|
|
|
|
if ( !this.hasVerticalScroll || this.y > 0 ) {
|
|
y = 0;
|
|
} else if ( this.y < this.maxScrollY ) {
|
|
y = this.maxScrollY;
|
|
}
|
|
|
|
if ( x == this.x && y == this.y ) {
|
|
return false;
|
|
}
|
|
|
|
this.scrollTo(x, y, time, this.options.bounceEasing);
|
|
|
|
return true;
|
|
},
|
|
|
|
disable: function () {
|
|
this.enabled = false;
|
|
},
|
|
|
|
enable: function () {
|
|
this.enabled = true;
|
|
},
|
|
|
|
refresh: function () {
|
|
utils.getRect(this.wrapper); // Force reflow
|
|
|
|
this.wrapperWidth = this.wrapper.clientWidth;
|
|
this.wrapperHeight = this.wrapper.clientHeight;
|
|
|
|
var rect = utils.getRect(this.scroller);
|
|
/* REPLACE START: refresh */
|
|
|
|
this.scrollerWidth = rect.width;
|
|
this.scrollerHeight = rect.height;
|
|
|
|
this.maxScrollX = this.wrapperWidth - this.scrollerWidth;
|
|
this.maxScrollY = this.wrapperHeight - this.scrollerHeight;
|
|
|
|
/* REPLACE END: refresh */
|
|
|
|
this.hasHorizontalScroll = this.options.scrollX && this.maxScrollX < 0;
|
|
this.hasVerticalScroll = this.options.scrollY && this.maxScrollY < 0;
|
|
|
|
if ( !this.hasHorizontalScroll ) {
|
|
this.maxScrollX = 0;
|
|
this.scrollerWidth = this.wrapperWidth;
|
|
}
|
|
|
|
if ( !this.hasVerticalScroll ) {
|
|
this.maxScrollY = 0;
|
|
this.scrollerHeight = this.wrapperHeight;
|
|
}
|
|
|
|
this.endTime = 0;
|
|
this.directionX = 0;
|
|
this.directionY = 0;
|
|
|
|
if(utils.hasPointer && !this.options.disablePointer) {
|
|
// The wrapper should have `touchAction` property for using pointerEvent.
|
|
this.wrapper.style[utils.style.touchAction] = utils.getTouchAction(this.options.eventPassthrough, true);
|
|
|
|
// case. not support 'pinch-zoom'
|
|
// https://github.com/cubiq/iscroll/issues/1118#issuecomment-270057583
|
|
if (!this.wrapper.style[utils.style.touchAction]) {
|
|
this.wrapper.style[utils.style.touchAction] = utils.getTouchAction(this.options.eventPassthrough, false);
|
|
}
|
|
}
|
|
this.wrapperOffset = utils.offset(this.wrapper);
|
|
|
|
this._execEvent('refresh');
|
|
|
|
this.resetPosition();
|
|
|
|
// INSERT POINT: _refresh
|
|
|
|
},
|
|
|
|
on: function (type, fn) {
|
|
if ( !this._events[type] ) {
|
|
this._events[type] = [];
|
|
}
|
|
|
|
this._events[type].push(fn);
|
|
},
|
|
|
|
off: function (type, fn) {
|
|
if ( !this._events[type] ) {
|
|
return;
|
|
}
|
|
|
|
var index = this._events[type].indexOf(fn);
|
|
|
|
if ( index > -1 ) {
|
|
this._events[type].splice(index, 1);
|
|
}
|
|
},
|
|
|
|
_execEvent: function (type) {
|
|
if ( !this._events[type] ) {
|
|
return;
|
|
}
|
|
|
|
var i = 0,
|
|
l = this._events[type].length;
|
|
|
|
if ( !l ) {
|
|
return;
|
|
}
|
|
|
|
for ( ; i < l; i++ ) {
|
|
this._events[type][i].apply(this, [].slice.call(arguments, 1));
|
|
}
|
|
},
|
|
|
|
scrollBy: function (x, y, time, easing) {
|
|
x = this.x + x;
|
|
y = this.y + y;
|
|
time = time || 0;
|
|
|
|
this.scrollTo(x, y, time, easing);
|
|
},
|
|
|
|
scrollTo: function (x, y, time, easing) {
|
|
easing = easing || utils.ease.circular;
|
|
|
|
this.isInTransition = this.options.useTransition && time > 0;
|
|
var transitionType = this.options.useTransition && easing.style;
|
|
if ( !time || transitionType ) {
|
|
if(transitionType) {
|
|
this._transitionTimingFunction(easing.style);
|
|
this._transitionTime(time);
|
|
}
|
|
this._translate(x, y);
|
|
} else {
|
|
this._animate(x, y, time, easing.fn);
|
|
}
|
|
},
|
|
|
|
scrollToElement: function (el, time, offsetX, offsetY, easing) {
|
|
el = el.nodeType ? el : this.scroller.querySelector(el);
|
|
|
|
if ( !el ) {
|
|
return;
|
|
}
|
|
|
|
var pos = utils.offset(el);
|
|
|
|
pos.left -= this.wrapperOffset.left;
|
|
pos.top -= this.wrapperOffset.top;
|
|
|
|
// if offsetX/Y are true we center the element to the screen
|
|
var elRect = utils.getRect(el);
|
|
var wrapperRect = utils.getRect(this.wrapper);
|
|
if ( offsetX === true ) {
|
|
offsetX = Math.round(elRect.width / 2 - wrapperRect.width / 2);
|
|
}
|
|
if ( offsetY === true ) {
|
|
offsetY = Math.round(elRect.height / 2 - wrapperRect.height / 2);
|
|
}
|
|
|
|
pos.left -= offsetX || 0;
|
|
pos.top -= offsetY || 0;
|
|
|
|
pos.left = pos.left > 0 ? 0 : pos.left < this.maxScrollX ? this.maxScrollX : pos.left;
|
|
pos.top = pos.top > 0 ? 0 : pos.top < this.maxScrollY ? this.maxScrollY : pos.top;
|
|
|
|
time = time === undefined || time === null || time === 'auto' ? Math.max(Math.abs(this.x-pos.left), Math.abs(this.y-pos.top)) : time;
|
|
|
|
this.scrollTo(pos.left, pos.top, time, easing);
|
|
},
|
|
|
|
_transitionTime: function (time) {
|
|
if (!this.options.useTransition) {
|
|
return;
|
|
}
|
|
time = time || 0;
|
|
var durationProp = utils.style.transitionDuration;
|
|
if(!durationProp) {
|
|
return;
|
|
}
|
|
|
|
this.scrollerStyle[durationProp] = time + 'ms';
|
|
|
|
if ( !time && utils.isBadAndroid ) {
|
|
this.scrollerStyle[durationProp] = '0.0001ms';
|
|
// remove 0.0001ms
|
|
var self = this;
|
|
rAF(function() {
|
|
if(self.scrollerStyle[durationProp] === '0.0001ms') {
|
|
self.scrollerStyle[durationProp] = '0s';
|
|
}
|
|
});
|
|
}
|
|
|
|
// INSERT POINT: _transitionTime
|
|
|
|
},
|
|
|
|
_transitionTimingFunction: function (easing) {
|
|
this.scrollerStyle[utils.style.transitionTimingFunction] = easing;
|
|
|
|
// INSERT POINT: _transitionTimingFunction
|
|
|
|
},
|
|
|
|
_translate: function (x, y) {
|
|
if ( this.options.useTransform ) {
|
|
|
|
/* REPLACE START: _translate */
|
|
|
|
this.scrollerStyle[utils.style.transform] = 'translate(' + x + 'px,' + y + 'px)' + this.translateZ;
|
|
|
|
/* REPLACE END: _translate */
|
|
|
|
} else {
|
|
x = Math.round(x);
|
|
y = Math.round(y);
|
|
this.scrollerStyle.left = x + 'px';
|
|
this.scrollerStyle.top = y + 'px';
|
|
}
|
|
|
|
this.x = x;
|
|
this.y = y;
|
|
|
|
// INSERT POINT: _translate
|
|
|
|
},
|
|
|
|
_initEvents: function (remove) {
|
|
var eventType = remove ? utils.removeEvent : utils.addEvent,
|
|
target = this.options.bindToWrapper ? this.wrapper : window;
|
|
|
|
eventType(window, 'orientationchange', this);
|
|
eventType(window, 'resize', this);
|
|
|
|
if ( this.options.click ) {
|
|
eventType(this.wrapper, 'click', this, true);
|
|
}
|
|
|
|
if ( !this.options.disableMouse ) {
|
|
eventType(this.wrapper, 'mousedown', this);
|
|
eventType(target, 'mousemove', this);
|
|
eventType(target, 'mousecancel', this);
|
|
eventType(target, 'mouseup', this);
|
|
}
|
|
|
|
if ( utils.hasPointer && !this.options.disablePointer ) {
|
|
eventType(this.wrapper, utils.prefixPointerEvent('pointerdown'), this);
|
|
eventType(target, utils.prefixPointerEvent('pointermove'), this);
|
|
eventType(target, utils.prefixPointerEvent('pointercancel'), this);
|
|
eventType(target, utils.prefixPointerEvent('pointerup'), this);
|
|
}
|
|
|
|
if ( utils.hasTouch && !this.options.disableTouch ) {
|
|
eventType(this.wrapper, 'touchstart', this);
|
|
eventType(target, 'touchmove', this);
|
|
eventType(target, 'touchcancel', this);
|
|
eventType(target, 'touchend', this);
|
|
}
|
|
|
|
eventType(this.scroller, 'transitionend', this);
|
|
eventType(this.scroller, 'webkitTransitionEnd', this);
|
|
eventType(this.scroller, 'oTransitionEnd', this);
|
|
eventType(this.scroller, 'MSTransitionEnd', this);
|
|
},
|
|
|
|
getComputedPosition: function () {
|
|
var matrix = window.getComputedStyle(this.scroller, null),
|
|
x, y;
|
|
|
|
if ( this.options.useTransform ) {
|
|
matrix = matrix[utils.style.transform].split(')')[0].split(', ');
|
|
x = +(matrix[12] || matrix[4]);
|
|
y = +(matrix[13] || matrix[5]);
|
|
} else {
|
|
x = +matrix.left.replace(/[^-\d.]/g, '');
|
|
y = +matrix.top.replace(/[^-\d.]/g, '');
|
|
}
|
|
|
|
return { x: x, y: y };
|
|
},
|
|
_animate: function (destX, destY, duration, easingFn) {
|
|
var that = this,
|
|
startX = this.x,
|
|
startY = this.y,
|
|
startTime = utils.getTime(),
|
|
destTime = startTime + duration;
|
|
|
|
function step () {
|
|
var now = utils.getTime(),
|
|
newX, newY,
|
|
easing;
|
|
|
|
if ( now >= destTime ) {
|
|
that.isAnimating = false;
|
|
that._translate(destX, destY);
|
|
|
|
if ( !that.resetPosition(that.options.bounceTime) ) {
|
|
that._execEvent('scrollEnd');
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
now = ( now - startTime ) / duration;
|
|
easing = easingFn(now);
|
|
newX = ( destX - startX ) * easing + startX;
|
|
newY = ( destY - startY ) * easing + startY;
|
|
that._translate(newX, newY);
|
|
|
|
if ( that.isAnimating ) {
|
|
rAF(step);
|
|
}
|
|
}
|
|
|
|
this.isAnimating = true;
|
|
step();
|
|
},
|
|
handleEvent: function (e) {
|
|
switch ( e.type ) {
|
|
case 'touchstart':
|
|
case 'pointerdown':
|
|
case 'MSPointerDown':
|
|
case 'mousedown':
|
|
this._start(e);
|
|
break;
|
|
case 'touchmove':
|
|
case 'pointermove':
|
|
case 'MSPointerMove':
|
|
case 'mousemove':
|
|
this._move(e);
|
|
break;
|
|
case 'touchend':
|
|
case 'pointerup':
|
|
case 'MSPointerUp':
|
|
case 'mouseup':
|
|
case 'touchcancel':
|
|
case 'pointercancel':
|
|
case 'MSPointerCancel':
|
|
case 'mousecancel':
|
|
this._end(e);
|
|
break;
|
|
case 'orientationchange':
|
|
case 'resize':
|
|
this._resize();
|
|
break;
|
|
case 'transitionend':
|
|
case 'webkitTransitionEnd':
|
|
case 'oTransitionEnd':
|
|
case 'MSTransitionEnd':
|
|
this._transitionEnd(e);
|
|
break;
|
|
case 'wheel':
|
|
case 'DOMMouseScroll':
|
|
case 'mousewheel':
|
|
this._wheel(e);
|
|
break;
|
|
case 'keydown':
|
|
this._key(e);
|
|
break;
|
|
case 'click':
|
|
if ( this.enabled && !e._constructed ) {
|
|
e.preventDefault();
|
|
e.stopPropagation();
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
};
|
|
IScroll.utils = utils;
|
|
|
|
if ( typeof module != 'undefined' && module.exports ) {
|
|
module.exports = IScroll;
|
|
} else if ( typeof define == 'function' && define.amd ) {
|
|
define( function () { return IScroll; } );
|
|
} else {
|
|
window.IScroll = IScroll;
|
|
}
|
|
|
|
})(window, document, Math);
|
|
/**
|
|
* [TagNav 可以滚动的标签导航]
|
|
* 依赖Zepto、iScroll
|
|
* @Author: 14100377
|
|
* @param {String} type 自滚动类型 scrollToFirst/scrollToNext/simple
|
|
* @param {String} curClassName 当前选中的类名 scrollToFirst/scrollToNext/simple
|
|
* @param {Number} index 默认索引
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|
*/
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|
;(function(root, factory, d){
|
|
if (typeof module !== 'undefined' && module.exports) { // CommonJS
|
|
module.exports = factory(root, d);
|
|
} else if (typeof define === 'function' && define.amd) { // AMD / RequireJS
|
|
define(factory(root, d));
|
|
} else {
|
|
root.TagNav = factory.call(root, root, d);
|
|
}
|
|
})(this, function(w, d){
|
|
'use strict';
|
|
//Event Hub
|
|
var hub = (function(){
|
|
var topics = {};
|
|
return {
|
|
subscribe: function(topic, listener) {
|
|
if(!topics[topic]) topics[topic] = { queue: [] };
|
|
var index = topics[topic].queue.push(listener) - 1;
|
|
return (function(topic, index) {
|
|
return {
|
|
remove: function() {
|
|
delete topics[topic].queue[index];
|
|
}
|
|
}
|
|
})(topic, index);
|
|
},
|
|
publish: function(topic, info) {
|
|
if(!topics[topic] || !topics[topic].queue.length) return;
|
|
var items = topics[topic].queue;
|
|
for(var i = 0, len = items.length; i < len; i++) {
|
|
if(typeof items[i] === 'function') items[i](info || {});
|
|
}
|
|
}
|
|
};
|
|
})();
|
|
|
|
function TagNav(element,opts){
|
|
return (this instanceof TagNav)
|
|
? this._init(element, opts)
|
|
: new TagNav(element, opts);
|
|
}
|
|
|
|
TagNav.prototype = {
|
|
constructor: TagNav,
|
|
|
|
_init: function(element,opts){
|
|
var self = this,
|
|
$el = $(element),
|
|
$list = $el.find('ul').first(),
|
|
$items = $el.find('li');
|
|
|
|
self.el = element;
|
|
self.opts = opts || {};
|
|
self.type = this.opts.type || 'simple';
|
|
self.curClassName = self.opts.curClassName || 'weui-state-active';
|
|
self.index = self.opts.index;
|
|
|
|
self.iScroll = new IScroll(self.el, {
|
|
scrollX: true,
|
|
scrollY: false ,
|
|
click: true
|
|
});
|
|
|
|
if ( self.index === undefined ) {
|
|
//TODO:优先从配置还是dom里取呢
|
|
self.index = self.index || $list.find( '.'+self.curClassName ).index();
|
|
if(self.index < 0) self.index = 0;
|
|
}
|
|
|
|
switch(this.opts.type){
|
|
case 'scrollToFirst' :
|
|
self._scrollToFirstEvent();
|
|
break;
|
|
case 'scrollToNext' :
|
|
self._scrollToNextEvent();
|
|
break;
|
|
}
|
|
|
|
$items.on('click',function(e){
|
|
self.switchTo( $( this ).index(), e );
|
|
});
|
|
|
|
self.$list = $list;
|
|
self.$items = $items;
|
|
self.switchTo(self.index);
|
|
},
|
|
|
|
_scrollToFirstEvent: function(){
|
|
var self = this;
|
|
hub.subscribe('select', function(parms) {
|
|
var el = self.$items.eq(parms.index)[0];
|
|
setTimeout(function(){self.iScroll.scrollToElement(el,400)},180)
|
|
});
|
|
},
|
|
|
|
_scrollToNextEvent: function(){
|
|
var self = this,
|
|
prevIndex;
|
|
|
|
hub.subscribe('select', function(parms) {
|
|
// 第一调用的时候没有prevIndex, 固根据this.index来控制方向。
|
|
if ( prevIndex === undefined ) {
|
|
prevIndex = self.index ? 0 : 1;
|
|
}
|
|
var dir = parms.index > prevIndex,
|
|
// 如果是想左则找prev否则找next
|
|
target = self.$items.eq(parms.index)[ dir ? 'next' : 'prev' ](),
|
|
// 如果没有相邻的，自己的位置也需要检测。存在这种情况
|
|
// 被点击的按钮，只显示了一半
|
|
offset = target.offset() || self.$items.eq(parms.index).offset(),
|
|
within = $(self.el).offset(),
|
|
listOffset;
|
|
|
|
if ( dir ? offset.left + offset.width > within.left +
|
|
within.width : offset.left < within.left ) {
|
|
listOffset = self.$list.offset();
|
|
var x = dir ? within.width - offset.left + listOffset.left - offset.width : listOffset.left - offset.left;
|
|
setTimeout(function(){self.iScroll.scrollTo( x, 0, 400 )},180)
|
|
}
|
|
prevIndex = parms.index;
|
|
});
|
|
},
|
|
|
|
/**
|
|
* 选择
|
|
* @method switchTo
|
|
*/
|
|
switchTo: function( index, e ) {
|
|
var self = this,
|
|
cur;
|
|
|
|
cur = self.$items.removeClass( self.curClassName )
|
|
.eq( index )
|
|
.addClass( self.curClassName );
|
|
|
|
self.index = index;
|
|
hub.publish('select',{'index':index});
|
|
},
|
|
|
|
/**
|
|
* 取消选择
|
|
* @method unselect
|
|
*/
|
|
unselect: function() {
|
|
this.index = -1;
|
|
this.$items.removeClass( self.curClassName );
|
|
},
|
|
|
|
/**
|
|
* 获取当前选中的序号
|
|
* @method getIndex
|
|
*/
|
|
getIndex: function() {
|
|
return this.index;
|
|
}
|
|
}
|
|
return TagNav;
|
|
|
|
}, document); |