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@@ -0,0 +1,178 @@
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+/* istanbul ignore next */
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+
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+import Vue from 'vue';
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+
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+const isServer = Vue.prototype.$isServer;
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+const SPECIAL_CHARS_REGEXP = /([\:\-\_]+(.))/g;
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+const MOZ_HACK_REGEXP = /^moz([A-Z])/;
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+const ieVersion = isServer ? 0 : Number(document.documentMode);
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+
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+/* istanbul ignore next */
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+const trim = function(string) {
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+ return (string || '').replace(/^[\s\uFEFF]+|[\s\uFEFF]+$/g, '');
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+};
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+/* istanbul ignore next */
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+const camelCase = function(name) {
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+ return name.replace(SPECIAL_CHARS_REGEXP, function(_, separator, letter, offset) {
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+ return offset ? letter.toUpperCase() : letter;
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+ }).replace(MOZ_HACK_REGEXP, 'Moz$1');
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+};
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+
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+/* istanbul ignore next */
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+export const on = (function() {
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+ if (!isServer && document.addEventListener) {
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+ return function(element, event, handler) {
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+ if (element && event && handler) {
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+ element.addEventListener(event, handler, false);
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+ }
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+ };
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+ } else {
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+ return function(element, event, handler) {
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+ if (element && event && handler) {
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+ element.attachEvent('on' + event, handler);
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+ }
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+ };
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+ }
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+})();
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+
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+/* istanbul ignore next */
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+export const off = (function() {
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+ if (!isServer && document.removeEventListener) {
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+ return function(element, event, handler) {
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+ if (element && event) {
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+ element.removeEventListener(event, handler, false);
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+ }
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+ };
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+ } else {
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+ return function(element, event, handler) {
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+ if (element && event) {
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+ element.detachEvent('on' + event, handler);
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+ }
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+ };
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+ }
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+})();
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+
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+/* istanbul ignore next */
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+export const once = function(el, event, fn) {
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+ var listener = function() {
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+ if (fn) {
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+ fn.apply(this, arguments);
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+ }
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+ off(el, event, listener);
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+ };
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+ on(el, event, listener);
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+};
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+
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+/* istanbul ignore next */
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+export function hasClass(el, cls) {
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+ if (!el || !cls) return false;
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+ if (cls.indexOf(' ') !== -1) throw new Error('className should not contain space.');
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+ if (el.classList) {
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+ return el.classList.contains(cls);
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+ } else {
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+ return (' ' + el.className + ' ').indexOf(' ' + cls + ' ') > -1;
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+ }
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+};
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+
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+/* istanbul ignore next */
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+export function addClass(el, cls) {
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+ if (!el) return;
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+ var curClass = el.className;
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+ var classes = (cls || '').split(' ');
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+
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+ for (var i = 0, j = classes.length; i < j; i++) {
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+ var clsName = classes[i];
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+ if (!clsName) continue;
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+
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+ if (el.classList) {
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+ el.classList.add(clsName);
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+ } else {
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+ if (!hasClass(el, clsName)) {
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+ curClass += ' ' + clsName;
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+ }
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+ }
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+ }
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+ if (!el.classList) {
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+ el.className = curClass;
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+ }
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+};
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+
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+/* istanbul ignore next */
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+export function removeClass(el, cls) {
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+ if (!el || !cls) return;
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+ var classes = cls.split(' ');
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+ var curClass = ' ' + el.className + ' ';
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+
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+ for (var i = 0, j = classes.length; i < j; i++) {
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+ var clsName = classes[i];
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+ if (!clsName) continue;
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+
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+ if (el.classList) {
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+ el.classList.remove(clsName);
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+ } else {
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+ if (hasClass(el, clsName)) {
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+ curClass = curClass.replace(' ' + clsName + ' ', ' ');
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+ }
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+ }
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+ }
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+ if (!el.classList) {
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+ el.className = trim(curClass);
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+ }
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+};
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+
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+/* istanbul ignore next */
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+export const getStyle = ieVersion < 9 ? function(element, styleName) {
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+ if (isServer) return;
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+ if (!element || !styleName) return null;
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+ styleName = camelCase(styleName);
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+ if (styleName === 'float') {
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+ styleName = 'styleFloat';
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+ }
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+ try {
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+ switch (styleName) {
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+ case 'opacity':
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+ try {
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+ return element.filters.item('alpha').opacity / 100;
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+ } catch (e) {
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+ return 1.0;
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+ }
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+ default:
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+ return (element.style[styleName] || element.currentStyle ? element.currentStyle[styleName] : null);
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+ }
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+ } catch (e) {
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+ return element.style[styleName];
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+ }
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+} : function(element, styleName) {
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+ if (isServer) return;
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+ if (!element || !styleName) return null;
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+ styleName = camelCase(styleName);
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+ if (styleName === 'float') {
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+ styleName = 'cssFloat';
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+ }
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+ try {
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+ var computed = document.defaultView.getComputedStyle(element, '');
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+ return element.style[styleName] || computed ? computed[styleName] : null;
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+ } catch (e) {
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+ return element.style[styleName];
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+ }
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+};
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+
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+/* istanbul ignore next */
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+export function setStyle(element, styleName, value) {
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+ if (!element || !styleName) return;
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+
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+ if (typeof styleName === 'object') {
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+ for (var prop in styleName) {
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+ if (styleName.hasOwnProperty(prop)) {
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+ setStyle(element, prop, styleName[prop]);
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+ }
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+ }
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+ } else {
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+ styleName = camelCase(styleName);
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+ if (styleName === 'opacity' && ieVersion < 9) {
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+ element.style.filter = isNaN(value) ? '' : 'alpha(opacity=' + value * 100 + ')';
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+ } else {
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+ element.style[styleName] = value;
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+ }
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+ }
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+};
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