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{"version":3,"file":"only-child.mjs","sources":["../../../../../../packages/components/slot/src/only-child.ts"],"sourcesContent":["import {\n cloneVNode,\n Comment,\n defineComponent,\n Fragment,\n h,\n Text,\n withDirectives,\n inject,\n} from 'vue'\nimport { NOOP, isObject } from '@vue/shared'\nimport {\n FORWARD_REF_INJECTION_KEY,\n useForwardRefDirective,\n} from '@element-plus/hooks'\nimport { debugWarn } from '@element-plus/utils/error'\n\nimport type { VNode } from 'vue'\n\nconst NAME = 'ElOnlyChild'\n\nconst OnlyChild = defineComponent({\n name: NAME,\n setup(_, { slots, attrs }) {\n const forwardRefInjection = inject(FORWARD_REF_INJECTION_KEY, undefined)!\n const forwardRefDirective = useForwardRefDirective(\n forwardRefInjection.setForwardRef ?? NOOP\n )\n return () => {\n const defaultSlot = slots.default?.(attrs)\n if (!defaultSlot) return null\n\n if (defaultSlot.length > 1) {\n debugWarn(NAME, 'ElOnlyChild requires exact only one valid child.')\n return null\n }\n\n const firstLegitNode = findFirstLegitChild(defaultSlot)\n if (!firstLegitNode) {\n debugWarn(NAME, 'no valid child node found')\n return null\n }\n\n return withDirectives(cloneVNode(firstLegitNode, attrs), [\n [forwardRefDirective],\n ])\n }\n },\n})\n\nfunction findFirstLegitChild(node: VNode[] | undefined) {\n if (!node) return null\n const children = node as VNode[]\n for (let i = 0; i < children.length; i++) {\n /**\n * when user uses h(Fragment, [text]) to render plain string,\n * this switch case just cannot handle, when the value is primitives\n * we should just return the wrapped string\n */\n const child = children[i]\n if (isObject(child)) {\n switch (child.type) {\n case Comment:\n continue\n case Text:\n return wrapTextContent(child)\n case Fragment:\n return findFirstLegitChild(child.children as VNode[])\n default:\n return child\n }\n }\n return wrapTextContent(child)\n }\n return null\n}\n\nfunction wrapTextContent(s: string | VNode) {\n return h('span', { class: 'el-only-child__content' }, [s])\n}\n\nexport default OnlyChild\n"],"names":[],"mappings":";;;;;;AAgBA,MAAM,IAAI,GAAG,aAAa,CAAC;AACtB,MAAC,SAAS,GAAG,eAAe,CAAC;AAClC,EAAE,IAAI,EAAE,IAAI;AACZ,EAAE,KAAK,CAAC,CAAC,EAAE,EAAE,KAAK,EAAE,KAAK,EAAE,EAAE;AAC7B,IAAI,IAAI,EAAE,CAAC;AACX,IAAI,MAAM,mBAAmB,GAAG,MAAM,CAAC,yBAAyB,EAAE,KAAK,CAAC,CAAC,CAAC;AAC1E,IAAI,MAAM,mBAAmB,GAAG,sBAAsB,CAAC,CAAC,EAAE,GAAG,mBAAmB,CAAC,aAAa,KAAK,IAAI,GAAG,EAAE,GAAG,IAAI,CAAC,CAAC;AACrH,IAAI,OAAO,MAAM;AACjB,MAAM,IAAI,GAAG,CAAC;AACd,MAAM,MAAM,WAAW,GAAG,CAAC,GAAG,GAAG,KAAK,CAAC,OAAO,KAAK,IAAI,GAAG,KAAK,CAAC,GAAG,GAAG,CAAC,IAAI,CAAC,KAAK,EAAE,KAAK,CAAC,CAAC;AAC1F,MAAM,IAAI,CAAC,WAAW;AACtB,QAAQ,OAAO,IAAI,CAAC;AACpB,MAAM,IAAI,WAAW,CAAC,MAAM,GAAG,CAAC,EAAE;AAClC,QAAQ,SAAS,CAAC,IAAI,EAAE,kDAAkD,CAAC,CAAC;AAC5E,QAAQ,OAAO,IAAI,CAAC;AACpB,OAAO;AACP,MAAM,MAAM,cAAc,GAAG,mBAAmB,CAAC,WAAW,CAAC,CAAC;AAC9D,MAAM,IAAI,CAAC,cAAc,EAAE;AAC3B,QAAQ,SAAS,CAAC,IAAI,EAAE,2BAA2B,CAAC,CAAC;AACrD,QAAQ,OAAO,IAAI,CAAC;AACpB,OAAO;AACP,MAAM,OAAO,cAAc,CAAC,UAAU,CAAC,cAAc,EAAE,KAAK,CAAC,EAAE;AAC/D,QAAQ,CAAC,mBAAmB,CAAC;AAC7B,OAAO,CAAC,CAAC;AACT,KAAK,CAAC;AACN,GAAG;AACH,CAAC,EAAE;AACH,SAAS,mBAAmB,CAAC,IAAI,EAAE;AACnC,EAAE,IAAI,CAAC,IAAI;AACX,IAAI,OAAO,IAAI,CAAC;AAChB,EAAE,MAAM,QAAQ,GAAG,IAAI,CAAC;AACxB,EAAE,KAAK,IAAI,CAAC,GAAG,CAAC,EAAE,CAAC,GAAG,QAAQ,CAAC,MAAM,EAAE,CAAC,EAAE,EAAE;AAC5C,IAAI,MAAM,KAAK,GAAG,QAAQ,CAAC,CAAC,CAAC,CAAC;AAC9B,IAAI,IAAI,QAAQ,CAAC,KAAK,CAAC,EAAE;AACzB,MAAM,QAAQ,KAAK,CAAC,IAAI;AACxB,QAAQ,KAAK,OAAO;AACpB,UAAU,SAAS;AACnB,QAAQ,KAAK,IAAI;AACjB,UAAU,OAAO,eAAe,CAAC,KAAK,CAAC,CAAC;AACxC,QAAQ,KAAK,QAAQ;AACrB,UAAU,OAAO,mBAAmB,CAAC,KAAK,CAAC,QAAQ,CAAC,CAAC;AACrD,QAAQ;AACR,UAAU,OAAO,KAAK,CAAC;AACvB,OAAO;AACP,KAAK;AACL,IAAI,OAAO,eAAe,CAAC,KAAK,CAAC,CAAC;AAClC,GAAG;AACH,EAAE,OAAO,IAAI,CAAC;AACd,CAAC;AACD,SAAS,eAAe,CAAC,CAAC,EAAE;AAC5B,EAAE,OAAO,CAAC,CAAC,MAAM,EAAE,EAAE,KAAK,EAAE,wBAAwB,EAAE,EAAE,CAAC,CAAC,CAAC,CAAC,CAAC;AAC7D;;;;"} |