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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,80 +1,26 @@ | ||
| import { | ||
| transformOn as baseTransform, | ||
| createVOnEventName, | ||
| validateVOnArguments, | ||
| processVOnHanlder, | ||
| VOnDirectiveNode, | ||
| DirectiveTransform, | ||
| createObjectProperty, | ||
| ExpressionNode, | ||
| createCompoundExpression, | ||
| NodeTypes | ||
| createCallExpression | ||
| } from '@vue/compiler-core' | ||
| import { EMPTY_ARR, fnExpRE } from '@vue/shared' | ||
| import { V_ON_MODIFIERS_GUARD } from '../runtimeHelpers' | ||
|
|
||
| // const keyCodes: { [key: string]: number | Array<number> } = { | ||
| // esc: 27, | ||
| // tab: 9, | ||
| // enter: 13, | ||
| // space: 32, | ||
| // up: 38, | ||
| // left: 37, | ||
| // right: 39, | ||
| // down: 40, | ||
| // delete: [8, 46] | ||
| // } | ||
|
|
||
| const genGuard = (condition: string) => `if(${condition})return null;` | ||
| const modifierCode = { | ||
| stop: '$event.stopPropagation();', | ||
| prevent: '$event.preventDefault();', | ||
| self: genGuard(`$event.target !== $event.currentTarget`), | ||
| ctrl: genGuard(`!$event.ctrlKey`), | ||
| shift: genGuard(`!$event.shiftKey`), | ||
| alt: genGuard(`!$event.altKey`), | ||
| meta: genGuard(`!$event.metaKey`), | ||
| left: genGuard(`'button' in $event && $event.button !== 0`), | ||
| middle: genGuard(`'button' in $event && $event.button !== 1`), | ||
| right: genGuard(`'button' in $event && $event.button !== 2`) | ||
| } as const | ||
|
|
||
| const isValidDomModifier = (key: string): key is keyof typeof modifierCode => | ||
| key in modifierCode | ||
|
|
||
| export const transformOn: DirectiveTransform = ( | ||
| dir: VOnDirectiveNode, | ||
| node, | ||
| context | ||
| ) => { | ||
| validateVOnArguments(dir, context) | ||
|
|
||
| const { modifiers, arg } = dir | ||
| let hasDomModifiers = modifiers.length && modifiers.some(isValidDomModifier) | ||
| if (!hasDomModifiers) return baseTransform(dir, node, context) | ||
|
|
||
| let eventName = createVOnEventName(arg) | ||
| let guards = modifiers.map( | ||
| m => (isValidDomModifier(m) ? modifierCode[m] : '') | ||
| ) | ||
| let exp: ExpressionNode | undefined = dir.exp | ||
| if (exp) { | ||
| if (fnExpRE.test(exp.content)) exp.content = `(${exp.content})($event)` | ||
| exp = processVOnHanlder(exp, context) | ||
| } | ||
| exp = createCompoundExpression([ | ||
| `$event => {`, | ||
| ...guards, | ||
| ...(exp | ||
| ? exp.type === NodeTypes.SIMPLE_EXPRESSION | ||
| ? ['(', exp, ')', '($event)'] | ||
| : exp.children | ||
| : EMPTY_ARR), | ||
| `}` | ||
| ]) | ||
| let res = { | ||
| props: [createObjectProperty(eventName, exp)], | ||
| export const transformOn: DirectiveTransform = (dir, node, context) => { | ||
| const { modifiers } = dir | ||
| let baseResult = baseTransform(dir, node, context) | ||
| if (!modifiers.length) return baseResult | ||
| let exp = baseResult.props[0].value | ||
| return { | ||
| props: [ | ||
| createObjectProperty( | ||
| baseResult.props[0].key, | ||
| createCallExpression(context.helper(V_ON_MODIFIERS_GUARD), [ | ||
| exp, | ||
| JSON.stringify(dir.modifiers) | ||
| ]) | ||
| ) | ||
| ], | ||
| needRuntime: false | ||
| } | ||
| console.log(`result`, JSON.stringify(res.props[0].value, null, 2)) | ||
| return res | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,6 @@ | ||
| // todo | ||
| export const vOnModifiersGuard = (fn: Function, modifiers: string[]) => { | ||
| return (event: Event) => { | ||
| return fn(event) | ||
| } | ||
| } |