/* @flow */
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import { makeMap } from 'shared/util'
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// these are reserved for web because they are directly compiled away
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// during template compilation
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export const isReservedAttr = makeMap('style,class')
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// attributes that should be using props for binding
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const acceptValue = makeMap('input,textarea,option,select,progress')
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export const mustUseProp = (tag: string, type: ?string, attr: string): boolean => {
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return (
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(attr === 'value' && acceptValue(tag)) && type !== 'button' ||
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(attr === 'selected' && tag === 'option') ||
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(attr === 'checked' && tag === 'input') ||
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(attr === 'muted' && tag === 'video')
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)
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}
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export const isEnumeratedAttr = makeMap('contenteditable,draggable,spellcheck')
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const isValidContentEditableValue = makeMap('events,caret,typing,plaintext-only')
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export const convertEnumeratedValue = (key: string, value: any) => {
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return isFalsyAttrValue(value) || value === 'false'
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? 'false'
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// allow arbitrary string value for contenteditable
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: key === 'contenteditable' && isValidContentEditableValue(value)
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? value
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: 'true'
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}
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export const isBooleanAttr = makeMap(
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'allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare,' +
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'default,defaultchecked,defaultmuted,defaultselected,defer,disabled,' +
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'enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple,' +
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'muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly,' +
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'required,reversed,scoped,seamless,selected,sortable,' +
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'truespeed,typemustmatch,visible'
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)
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export const xlinkNS = 'http://www.w3.org/1999/xlink'
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export const isXlink = (name: string): boolean => {
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return name.charAt(5) === ':' && name.slice(0, 5) === 'xlink'
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}
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export const getXlinkProp = (name: string): string => {
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return isXlink(name) ? name.slice(6, name.length) : ''
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}
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export const isFalsyAttrValue = (val: any): boolean => {
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return val == null || val === false
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}
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