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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,119 @@ | ||
| import { ComponentInstance } from '../component' | ||
| import vmStateManager from './vmStateManager' | ||
| import { setCurrentInstance, getCurrentInstance } from '../runtimeContext' | ||
| import { Ref, isRef } from '../apis' | ||
| import { hasOwn, proxy, warn } from './utils' | ||
| import { createSlotProxy, resolveSlots } from './helper' | ||
|
|
||
| export function asVmProperty( | ||
| vm: ComponentInstance, | ||
| propName: string, | ||
| propValue: Ref<unknown> | ||
| ) { | ||
| const props = vm.$options.props | ||
| if (!(propName in vm) && !(props && hasOwn(props, propName))) { | ||
| proxy(vm, propName, { | ||
| get: () => propValue.value, | ||
| set: (val: unknown) => { | ||
| propValue.value = val | ||
| }, | ||
| }) | ||
|
|
||
| if (__DEV__) { | ||
| // expose binding to Vue Devtool as a data property | ||
| // delay this until state has been resolved to prevent repeated works | ||
| vm.$nextTick(() => { | ||
| proxy(vm._data, propName, { | ||
| get: () => propValue.value, | ||
| set: (val: unknown) => { | ||
| propValue.value = val | ||
| }, | ||
| }) | ||
| }) | ||
| } | ||
| } else if (__DEV__) { | ||
| if (props && hasOwn(props, propName)) { | ||
| warn( | ||
| `The setup binding property "${propName}" is already declared as a prop.`, | ||
| vm | ||
| ) | ||
| } else { | ||
| warn(`The setup binding property "${propName}" is already declared.`, vm) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| export function updateTemplateRef(vm: ComponentInstance) { | ||
| const rawBindings = vmStateManager.get(vm, 'rawBindings') || {} | ||
| if (!rawBindings || !Object.keys(rawBindings).length) return | ||
|
|
||
| const refs = vm.$refs | ||
| const oldRefKeys = vmStateManager.get(vm, 'refs') || [] | ||
| for (let index = 0; index < oldRefKeys.length; index++) { | ||
| const key = oldRefKeys[index] | ||
| const setupValue = rawBindings[key] | ||
| if (!refs[key] && setupValue && isRef(setupValue)) { | ||
| setupValue.value = null | ||
| } | ||
| } | ||
|
|
||
| const newKeys = Object.keys(refs) | ||
| const validNewKeys = [] | ||
| for (let index = 0; index < newKeys.length; index++) { | ||
| const key = newKeys[index] | ||
| const setupValue = rawBindings[key] | ||
| if (refs[key] && setupValue && isRef(setupValue)) { | ||
| setupValue.value = refs[key] | ||
| validNewKeys.push(key) | ||
| } | ||
| } | ||
| vmStateManager.set(vm, 'refs', validNewKeys) | ||
| } | ||
|
|
||
| export function resolveScopedSlots( | ||
| vm: ComponentInstance, | ||
| slotsProxy: { [x: string]: Function } | ||
| ): void { | ||
| const parentVNode = (vm.$options as any)._parentVnode | ||
| if (!parentVNode) return | ||
|
|
||
| const prevSlots = vmStateManager.get(vm, 'slots') || [] | ||
| const curSlots = resolveSlots(parentVNode.data.scopedSlots, vm.$slots) | ||
| // remove staled slots | ||
| for (let index = 0; index < prevSlots.length; index++) { | ||
| const key = prevSlots[index] | ||
| if (!curSlots[key]) { | ||
| delete slotsProxy[key] | ||
| } | ||
| } | ||
|
|
||
| // proxy fresh slots | ||
| const slotNames = Object.keys(curSlots) | ||
| for (let index = 0; index < slotNames.length; index++) { | ||
| const key = slotNames[index] | ||
| if (!slotsProxy[key]) { | ||
| slotsProxy[key] = createSlotProxy(vm, key) | ||
| } | ||
| } | ||
| vmStateManager.set(vm, 'slots', slotNames) | ||
| } | ||
|
|
||
| export function activateCurrentInstance( | ||
| vm: ComponentInstance, | ||
| fn: (vm_: ComponentInstance) => any, | ||
| onError?: (err: Error) => void | ||
| ) { | ||
| let preVm = getCurrentInstance() | ||
| setCurrentInstance(vm) | ||
| try { | ||
| return fn(vm) | ||
| } catch (err) { | ||
| if (onError) { | ||
| onError(err) | ||
| } else { | ||
| throw err | ||
| } | ||
| } finally { | ||
| setCurrentInstance(preVm) | ||
| } | ||
| } |