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