aaac7fed
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add
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/* @flow */
import { emptyObject } from 'shared/util'
import { parseFilters } from './parser/filter-parser'
export function baseWarn (msg: string) {
console.error(`[Vue compiler]: ${msg}`)
}
export function pluckModuleFunction<F: Function> (
modules: ?Array<Object>,
key: string
): Array<F> {
return modules
? modules.map(m => m[key]).filter(_ => _)
: []
}
export function addProp (el: ASTElement, name: string, value: string) {
(el.props || (el.props = [])).push({ name, value })
el.plain = false
}
export function addAttr (el: ASTElement, name: string, value: any) {
(el.attrs || (el.attrs = [])).push({ name, value })
el.plain = false
}
// add a raw attr (use this in preTransforms)
export function addRawAttr (el: ASTElement, name: string, value: any) {
el.attrsMap[name] = value
el.attrsList.push({ name, value })
}
export function addDirective (
el: ASTElement,
name: string,
rawName: string,
value: string,
arg: ?string,
modifiers: ?ASTModifiers
) {
(el.directives || (el.directives = [])).push({ name, rawName, value, arg, modifiers })
el.plain = false
}
export function addHandler (
el: ASTElement,
name: string,
value: string,
modifiers: ?ASTModifiers,
important?: boolean,
warn?: Function
) {
modifiers = modifiers || emptyObject
// warn prevent and passive modifier
/* istanbul ignore if */
if (
process.env.NODE_ENV !== 'production' && warn &&
modifiers.prevent && modifiers.passive
) {
warn(
'passive and prevent can\'t be used together. ' +
'Passive handler can\'t prevent default event.'
)
}
// check capture modifier
if (modifiers.capture) {
delete modifiers.capture
name = '!' + name // mark the event as captured
}
if (modifiers.once) {
delete modifiers.once
name = '~' + name // mark the event as once
}
/* istanbul ignore if */
if (modifiers.passive) {
delete modifiers.passive
name = '&' + name // mark the event as passive
}
// normalize click.right and click.middle since they don't actually fire
// this is technically browser-specific, but at least for now browsers are
// the only target envs that have right/middle clicks.
if (name === 'click') {
if (modifiers.right) {
name = 'contextmenu'
delete modifiers.right
} else if (modifiers.middle) {
name = 'mouseup'
}
}
let events
if (modifiers.native) {
delete modifiers.native
events = el.nativeEvents || (el.nativeEvents = {})
} else {
events = el.events || (el.events = {})
}
const newHandler: any = {
value: value.trim()
}
if (modifiers !== emptyObject) {
newHandler.modifiers = modifiers
}
const handlers = events[name]
/* istanbul ignore if */
if (Array.isArray(handlers)) {
important ? handlers.unshift(newHandler) : handlers.push(newHandler)
} else if (handlers) {
events[name] = important ? [newHandler, handlers] : [handlers, newHandler]
} else {
events[name] = newHandler
}
el.plain = false
}
export function getBindingAttr (
el: ASTElement,
name: string,
getStatic?: boolean
): ?string {
const dynamicValue =
getAndRemoveAttr(el, ':' + name) ||
getAndRemoveAttr(el, 'v-bind:' + name)
if (dynamicValue != null) {
return parseFilters(dynamicValue)
} else if (getStatic !== false) {
const staticValue = getAndRemoveAttr(el, name)
if (staticValue != null) {
return JSON.stringify(staticValue)
}
}
}
// note: this only removes the attr from the Array (attrsList) so that it
// doesn't get processed by processAttrs.
// By default it does NOT remove it from the map (attrsMap) because the map is
// needed during codegen.
export function getAndRemoveAttr (
el: ASTElement,
name: string,
removeFromMap?: boolean
): ?string {
let val
if ((val = el.attrsMap[name]) != null) {
const list = el.attrsList
for (let i = 0, l = list.length; i < l; i++) {
if (list[i].name === name) {
list.splice(i, 1)
break
}
}
}
if (removeFromMap) {
delete el.attrsMap[name]
}
return val
}
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