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import type { ComponentInternalInstance, ComponentOptions } from '../component'
import { ErrorCodes, callWithErrorHandling } from '../errorHandling'
import type { VNode } from '../vnode'
import { popWarningContext, pushWarningContext } from '../warning'
import {
DeprecationTypes,
isCompatEnabled,
warnDeprecation,
} from './compatConfig'
export const compatModelEventPrefix = `onModelCompat:`
const warnedTypes = new WeakSet()
export function convertLegacyVModelProps(vnode: VNode): void {
const { type, shapeFlag, props, dynamicProps } = vnode
const comp = type as ComponentOptions
if (shapeFlag & ShapeFlags.COMPONENT && props && 'modelValue' in props) {
if (
!isCompatEnabled(
DeprecationTypes.COMPONENT_V_MODEL,
// this is a special case where we want to use the vnode component's
// compat config instead of the current rendering instance (which is the
// parent of the component that exposes v-model)
{ type } as any,
)
) {
return
}
if (__DEV__ && !warnedTypes.has(comp)) {
pushWarningContext(vnode)
warnDeprecation(DeprecationTypes.COMPONENT_V_MODEL, { type } as any, comp)
popWarningContext()
warnedTypes.add(comp)
}
// v3 compiled model code -> v2 compat props
// modelValue -> value
// onUpdate:modelValue -> onModelCompat:input
const model = comp.model || {}
applyModelFromMixins(model, comp.mixins)
const { prop = 'value', event = 'input' } = model
if (prop !== 'modelValue') {
props[prop] = props.modelValue
delete props.modelValue
}
// important: update dynamic props
if (dynamicProps) {
dynamicProps[dynamicProps.indexOf('modelValue')] = prop
}
props[compatModelEventPrefix + event] = props['onUpdate:modelValue']
delete props['onUpdate:modelValue']
}
}
function applyModelFromMixins(model: any, mixins?: ComponentOptions[]) {
if (mixins) {
mixins.forEach(m => {
if (m.model) extend(model, m.model)
if (m.mixins) applyModelFromMixins(model, m.mixins)
})
}
}
export function compatModelEmit(
instance: ComponentInternalInstance,
event: string,
args: any[],
): void {
if (!isCompatEnabled(DeprecationTypes.COMPONENT_V_MODEL, instance)) {
return
}
const props = instance.vnode.props
const modelHandler = props && props[compatModelEventPrefix + event]
if (modelHandler) {
callWithErrorHandling(
modelHandler,
instance,
ErrorCodes.COMPONENT_EVENT_HANDLER,
args,
)
}
}
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