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14 KiB
{"version":3,"file":"tabs.mjs","sources":["../../../../../../packages/components/tabs/src/tabs.ts"],"sourcesContent":["import {\n defineComponent,\n Fragment,\n getCurrentInstance,\n h,\n nextTick,\n onMounted,\n onUpdated,\n provide,\n ref,\n renderSlot,\n watch,\n} from 'vue'\nimport { isPromise, NOOP } from '@vue/shared'\nimport { EVENT_CODE } from '@element-plus/utils/aria'\nimport ElIcon from '@element-plus/components/icon'\nimport { Plus } from '@element-plus/icons-vue'\nimport { buildProps, definePropType } from '@element-plus/utils/props'\nimport { INPUT_EVENT, UPDATE_MODEL_EVENT } from '@element-plus/utils/constants'\nimport { tabsRootContextKey } from '@element-plus/tokens'\nimport TabNav from './tab-nav'\nimport type { TabsPaneContext } from '@element-plus/tokens'\n\nimport type {\n Component,\n ComponentInternalInstance,\n VNode,\n ExtractPropTypes,\n Ref,\n} from 'vue'\n\nexport const tabsProps = buildProps({\n type: {\n type: String,\n values: ['card', 'border-card', ''],\n default: '',\n },\n activeName: {\n type: String,\n default: '',\n },\n closable: Boolean,\n addable: Boolean,\n modelValue: {\n type: String,\n default: '',\n },\n editable: Boolean,\n tabPosition: {\n type: String,\n values: ['top', 'right', 'bottom', 'left'],\n default: 'top',\n },\n beforeLeave: {\n type: definePropType<\n (\n newTabName: string,\n oldTabName: string\n ) => void | boolean | Promise<void | boolean>\n >(Function),\n default: () => true,\n },\n stretch: Boolean,\n} as const)\nexport type TabsProps = ExtractPropTypes<typeof tabsProps>\n\nexport const tabsEmits = {\n [UPDATE_MODEL_EVENT]: (tabName: string) => typeof tabName === 'string',\n [INPUT_EVENT]: (tabName: string) => typeof tabName === 'string',\n 'tab-click': (pane: TabsPaneContext, ev: Event) => ev instanceof Event,\n edit: (paneName: string | null, action: 'remove' | 'add') =>\n action === 'remove' || action === 'add',\n 'tab-remove': (paneName: string) => typeof paneName === 'string',\n 'tab-add': () => true,\n}\nexport type TabsEmits = typeof tabsEmits\n\nconst getPaneInstanceFromSlot = (\n vnode: VNode,\n paneInstanceList: ComponentInternalInstance[] = []\n) => {\n const children = (vnode.children || []) as ArrayLike<VNode>\n Array.from(children).forEach((node) => {\n let type = node.type\n type = (type as Component).name || type\n if (type === 'ElTabPane' && node.component) {\n paneInstanceList.push(node.component)\n } else if (type === Fragment || type === 'template') {\n getPaneInstanceFromSlot(node, paneInstanceList)\n }\n })\n return paneInstanceList\n}\n\nexport default defineComponent({\n name: 'ElTabs',\n\n props: tabsProps,\n emits: tabsEmits,\n\n setup(props, { emit, slots, expose }) {\n const instance = getCurrentInstance()!\n const nav$ = ref<InstanceType<typeof TabNav>>()\n\n const panes: Ref<TabsPaneContext[]> = ref([])\n const currentName = ref(props.modelValue || props.activeName || '0')\n\n const paneStatesMap: Record<number, TabsPaneContext> = {}\n\n const updatePaneInstances = (isForceUpdate = false) => {\n if (slots.default) {\n const children = instance.subTree.children as ArrayLike<VNode>\n const content = Array.from(children).find(\n ({ props }) => props?.class === 'el-tabs__content'\n )\n if (!content) return\n\n const paneInstanceList: TabsPaneContext[] = getPaneInstanceFromSlot(\n content\n ).map((paneComponent) => paneStatesMap[paneComponent.uid])\n\n const panesChanged = !(\n paneInstanceList.length === panes.value.length &&\n paneInstanceList.every(\n (pane, index) => pane.uid === panes.value[index].uid\n )\n )\n\n if (isForceUpdate || panesChanged) {\n panes.value = paneInstanceList\n }\n } else if (panes.value.length !== 0) {\n panes.value = []\n }\n }\n\n const changeCurrentName = (value: string) => {\n currentName.value = value\n emit(INPUT_EVENT, value)\n emit(UPDATE_MODEL_EVENT, value)\n }\n\n const setCurrentName = (value: string) => {\n // should do nothing.\n if (currentName.value === value) return\n\n const canLeave = props.beforeLeave?.(value, currentName.value)\n if (isPromise(canLeave)) {\n canLeave.then(\n () => {\n changeCurrentName(value)\n\n // call exposed function, Vue doesn't support expose in typescript yet.\n // eslint-disable-next-line @typescript-eslint/ban-ts-comment\n // @ts-expect-error\n nav$.value?.removeFocus?.()\n },\n // ignore promise rejection in `before-leave` hook\n NOOP\n )\n } else if (canLeave !== false) {\n changeCurrentName(value)\n }\n }\n\n const handleTabClick = (\n tab: TabsPaneContext,\n tabName: string,\n event: Event\n ) => {\n if (tab.props.disabled) return\n setCurrentName(tabName)\n emit('tab-click', tab, event)\n }\n\n const handleTabRemove = (pane: TabsPaneContext, ev: Event) => {\n if (pane.props.disabled) return\n ev.stopPropagation()\n emit('edit', pane.props.name, 'remove')\n emit('tab-remove', pane.props.name)\n }\n\n const handleTabAdd = () => {\n emit('edit', null, 'add')\n emit('tab-add')\n }\n\n onUpdated(() => updatePaneInstances())\n onMounted(() => updatePaneInstances())\n\n watch(\n () => props.activeName,\n (modelValue) => setCurrentName(modelValue)\n )\n\n watch(\n () => props.modelValue,\n (modelValue) => setCurrentName(modelValue)\n )\n\n watch(currentName, async () => {\n updatePaneInstances(true)\n await nextTick()\n await nav$.value?.$nextTick()\n\n // call exposed function, Vue doesn't support expose in typescript yet.\n // eslint-disable-next-line @typescript-eslint/ban-ts-comment\n // @ts-expect-error\n nav$.value?.scrollToActiveTab()\n })\n\n provide(tabsRootContextKey, {\n props,\n currentName,\n updatePaneState: (pane) => (paneStatesMap[pane.uid] = pane),\n })\n\n expose({\n currentName,\n })\n\n return () => {\n const newButton =\n props.editable || props.addable\n ? h(\n 'span',\n {\n class: 'el-tabs__new-tab',\n tabindex: '0',\n onClick: handleTabAdd,\n onKeydown: (ev: KeyboardEvent) => {\n if (ev.code === EVENT_CODE.enter) handleTabAdd()\n },\n },\n [h(ElIcon, { class: 'is-icon-plus' }, { default: () => h(Plus) })]\n )\n : null\n\n const header = h(\n 'div',\n { class: ['el-tabs__header', `is-${props.tabPosition}`] },\n [\n newButton,\n h(TabNav, {\n currentName: currentName.value,\n editable: props.editable,\n type: props.type,\n panes: panes.value,\n stretch: props.stretch,\n ref: nav$,\n onTabClick: handleTabClick,\n onTabRemove: handleTabRemove,\n }),\n ]\n )\n\n const panels = h('div', { class: 'el-tabs__content' }, [\n renderSlot(slots, 'default'),\n ])\n\n return h(\n 'div',\n {\n class: {\n 'el-tabs': true,\n 'el-tabs--card': props.type === 'card',\n [`el-tabs--${props.tabPosition}`]: true,\n 'el-tabs--border-card': props.type === 'border-card',\n },\n },\n props.tabPosition !== 'bottom' ? [header, panels] : [panels, header]\n )\n }\n 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