import { isServer } from './is'
|
const ieVersion = isServer ? 0 : Number((document as any).documentMode)
|
const SPECIAL_CHARS_REGEXP = /([\:\-\_]+(.))/g
|
const MOZ_HACK_REGEXP = /^moz([A-Z])/
|
|
export interface ViewportOffsetResult {
|
left: number
|
top: number
|
right: number
|
bottom: number
|
rightIncludeBody: number
|
bottomIncludeBody: number
|
}
|
|
/* istanbul ignore next */
|
const trim = function (string: string) {
|
return (string || '').replace(/^[\s\uFEFF]+|[\s\uFEFF]+$/g, '')
|
}
|
|
/* istanbul ignore next */
|
const camelCase = function (name: string) {
|
return name
|
.replace(SPECIAL_CHARS_REGEXP, function (_, __, letter, offset) {
|
return offset ? letter.toUpperCase() : letter
|
})
|
.replace(MOZ_HACK_REGEXP, 'Moz$1')
|
}
|
|
/* istanbul ignore next */
|
export function hasClass(el: Element, cls: string) {
|
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: Element, cls: string) {
|
if (!el) return
|
let curClass = el.className
|
const classes = (cls || '').split(' ')
|
|
for (let i = 0, j = classes.length; i < j; i++) {
|
const 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: Element, cls: string) {
|
if (!el || !cls) return
|
const classes = cls.split(' ')
|
let curClass = ' ' + el.className + ' '
|
|
for (let i = 0, j = classes.length; i < j; i++) {
|
const 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)
|
}
|
}
|
|
export function getBoundingClientRect(element: Element): DOMRect | number {
|
if (!element || !element.getBoundingClientRect) {
|
return 0
|
}
|
return element.getBoundingClientRect()
|
}
|
|
/**
|
* 获取当前元素的left、top偏移
|
* left：元素最左侧距离文档左侧的距离
|
* top:元素最顶端距离文档顶端的距离
|
* right:元素最右侧距离文档右侧的距离
|
* bottom：元素最底端距离文档底端的距离
|
* rightIncludeBody：元素最左侧距离文档右侧的距离
|
* bottomIncludeBody：元素最底端距离文档最底部的距离
|
*
|
* @description:
|
*/
|
export function getViewportOffset(element: Element): ViewportOffsetResult {
|
const doc = document.documentElement
|
|
const docScrollLeft = doc.scrollLeft
|
const docScrollTop = doc.scrollTop
|
const docClientLeft = doc.clientLeft
|
const docClientTop = doc.clientTop
|
|
const pageXOffset = window.pageXOffset
|
const pageYOffset = window.pageYOffset
|
|
const box = getBoundingClientRect(element)
|
|
const { left: retLeft, top: rectTop, width: rectWidth, height: rectHeight } = box as DOMRect
|
|
const scrollLeft = (pageXOffset || docScrollLeft) - (docClientLeft || 0)
|
const scrollTop = (pageYOffset || docScrollTop) - (docClientTop || 0)
|
const offsetLeft = retLeft + pageXOffset
|
const offsetTop = rectTop + pageYOffset
|
|
const left = offsetLeft - scrollLeft
|
const top = offsetTop - scrollTop
|
|
const clientWidth = window.document.documentElement.clientWidth
|
const clientHeight = window.document.documentElement.clientHeight
|
return {
|
left: left,
|
top: top,
|
right: clientWidth - rectWidth - left,
|
bottom: clientHeight - rectHeight - top,
|
rightIncludeBody: clientWidth - left,
|
bottomIncludeBody: clientHeight - top
|
}
|
}
|
|
/* istanbul ignore next */
|
export const on = function (
|
element: HTMLElement | Document | Window,
|
event: string,
|
handler: EventListenerOrEventListenerObject
|
): void {
|
if (element && event && handler) {
|
element.addEventListener(event, handler, false)
|
}
|
}
|
|
/* istanbul ignore next */
|
export const off = function (
|
element: HTMLElement | Document | Window,
|
event: string,
|
handler: any
|
): void {
|
if (element && event && handler) {
|
element.removeEventListener(event, handler, false)
|
}
|
}
|
|
/* istanbul ignore next */
|
export const once = function (el: HTMLElement, event: string, fn: EventListener): void {
|
const listener = function (this: any, ...args: unknown[]) {
|
if (fn) {
|
// @ts-ignore
|
fn.apply(this, args)
|
}
|
off(el, event, listener)
|
}
|
on(el, event, listener)
|
}
|
|
/* istanbul ignore next */
|
export const getStyle =
|
ieVersion < 9
|
? function (element: Element | any, styleName: string) {
|
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: Element | any, styleName: string) {
|
if (isServer) return
|
if (!element || !styleName) return null
|
styleName = camelCase(styleName)
|
if (styleName === 'float') {
|
styleName = 'cssFloat'
|
}
|
try {
|
const computed = (document as any).defaultView.getComputedStyle(element, '')
|
return element.style[styleName] || computed ? computed[styleName] : null
|
} catch (e) {
|
return element.style[styleName]
|
}
|
}
|
|
/* istanbul ignore next */
|
export function setStyle(element: Element | any, styleName: any, value: any) {
|
if (!element || !styleName) return
|
|
if (typeof styleName === 'object') {
|
for (const prop in styleName) {
|
if (Object.prototype.hasOwnProperty.call(styleName, 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
|
}
|
}
|
}
|
|
/* istanbul ignore next */
|
export const isScroll = (el: Element, vertical: any) => {
|
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)/)
|
}
|
|
/* istanbul ignore next */
|
export const getScrollContainer = (el: Element, vertical?: any) => {
|
if (isServer) return
|
|
let parent: any = el
|
while (parent) {
|
if ([window, document, document.documentElement].includes(parent)) {
|
return window
|
}
|
if (isScroll(parent, vertical)) {
|
return parent
|
}
|
parent = parent.parentNode
|
}
|
|
return parent
|
}
|
|
/* istanbul ignore next */
|
export const isInContainer = (el: Element, container: any) => {
|
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
|
)
|
}
|
