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element-plus

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A Component Library for Vue 3

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{"version":3,"file":"autocomplete2.mjs","names":[],"sources":["../../../../../../packages/components/autocomplete/src/autocomplete.vue"],"sourcesContent":["<template>\n <el-tooltip\n ref=\"popperRef\"\n :visible=\"suggestionVisible\"\n :placement=\"placement\"\n :fallback-placements=\"['bottom-start', 'top-start']\"\n :popper-class=\"[ns.e('popper'), popperClass!]\"\n :popper-style=\"popperStyle\"\n :teleported=\"teleported\"\n :append-to=\"appendTo\"\n :gpu-acceleration=\"false\"\n pure\n manual-mode\n effect=\"light\"\n trigger=\"click\"\n :transition=\"`${ns.namespace.value}-zoom-in-top`\"\n persistent\n role=\"listbox\"\n @before-show=\"onSuggestionShow\"\n @hide=\"onHide\"\n >\n <div\n ref=\"listboxRef\"\n :class=\"[ns.b(), $attrs.class]\"\n :style=\"styles\"\n role=\"combobox\"\n aria-haspopup=\"listbox\"\n :aria-expanded=\"suggestionVisible\"\n :aria-owns=\"listboxId\"\n >\n <el-input\n ref=\"inputRef\"\n v-bind=\"mergeProps(passInputProps, $attrs)\"\n :model-value=\"modelValue\"\n :disabled=\"disabled\"\n @input=\"handleInput\"\n @change=\"handleChange\"\n @focus=\"handleFocus\"\n @blur=\"handleBlur\"\n @clear=\"handleClear\"\n @keydown=\"handleKeydown\"\n @mousedown=\"handleMouseDown\"\n >\n <template v-if=\"$slots.prepend\" #prepend>\n <slot name=\"prepend\" />\n </template>\n <template v-if=\"$slots.append\" #append>\n <slot name=\"append\" />\n </template>\n <template v-if=\"$slots.prefix\" #prefix>\n <slot name=\"prefix\" />\n </template>\n <template v-if=\"$slots.suffix\" #suffix>\n <slot name=\"suffix\" />\n </template>\n </el-input>\n </div>\n <template #content>\n <div\n ref=\"regionRef\"\n :class=\"[ns.b('suggestion'), ns.is('loading', suggestionLoading)]\"\n :style=\"{\n [fitInputWidth ? 'width' : 'minWidth']: dropdownWidth,\n outline: 'none',\n }\"\n role=\"region\"\n >\n <div\n v-if=\"$slots.header\"\n :class=\"ns.be('suggestion', 'header')\"\n @click.stop\n >\n <slot name=\"header\" />\n </div>\n <el-scrollbar\n :id=\"listboxId\"\n tag=\"ul\"\n :wrap-class=\"ns.be('suggestion', 'wrap')\"\n :view-class=\"ns.be('suggestion', 'list')\"\n role=\"listbox\"\n >\n <li v-if=\"suggestionLoading\">\n <slot name=\"loading\">\n <el-icon :class=\"ns.is('loading')\">\n <Loading />\n </el-icon>\n </slot>\n </li>\n <template v-else>\n <li\n v-for=\"(item, index) in suggestions\"\n :id=\"`${listboxId}-item-${index}`\"\n :key=\"index\"\n :class=\"{ highlighted: highlightedIndex === index }\"\n role=\"option\"\n :aria-selected=\"highlightedIndex === index\"\n @click=\"handleSelect(item)\"\n >\n <slot :item=\"item\">{{ item[valueKey] }}</slot>\n </li>\n </template>\n </el-scrollbar>\n <div\n v-if=\"$slots.footer\"\n :class=\"ns.be('suggestion', 'footer')\"\n @click.stop\n >\n <slot name=\"footer\" />\n </div>\n </div>\n </template>\n </el-tooltip>\n</template>\n\n<script lang=\"ts\" setup>\nimport {\n computed,\n mergeProps,\n onBeforeUnmount,\n onMounted,\n ref,\n useAttrs as useRawAttrs,\n} from 'vue'\nimport { pick } from 'lodash-unified'\nimport { onClickOutside, useDebounceFn } from '@vueuse/core'\nimport { Loading } from '@element-plus/icons-vue'\nimport { useId, useNamespace } from '@element-plus/hooks'\nimport { NOOP, getEventCode, isArray, throwError } from '@element-plus/utils'\nimport {\n CHANGE_EVENT,\n EVENT_CODE,\n INPUT_EVENT,\n UPDATE_MODEL_EVENT,\n} from '@element-plus/constants'\nimport ElInput, {\n inputProps,\n inputPropsDefaults,\n} from '@element-plus/components/input'\nimport ElScrollbar from '@element-plus/components/scrollbar'\nimport ElTooltip from '@element-plus/components/tooltip'\nimport ElIcon from '@element-plus/components/icon'\nimport { useFormDisabled } from '@element-plus/components/form'\nimport { autocompleteEmits } from './autocomplete'\n\nimport type { AutocompleteData, AutocompleteProps } from './autocomplete'\nimport type { StyleValue } from 'vue'\nimport type { TooltipInstance } from '@element-plus/components/tooltip'\nimport type { InputInstance } from '@element-plus/components/input'\n\nconst COMPONENT_NAME = 'ElAutocomplete'\ndefineOptions({\n name: COMPONENT_NAME,\n inheritAttrs: false,\n})\n\nconst props = withDefaults(defineProps<AutocompleteProps>(), {\n ...inputPropsDefaults,\n valueKey: 'value',\n modelValue: '',\n debounce: 300,\n placement: 'bottom-start',\n fetchSuggestions: NOOP,\n triggerOnFocus: true,\n loopNavigation: true,\n teleported: true,\n})\nconst emit = defineEmits(autocompleteEmits)\n\nconst passInputProps = computed(() => pick(props, Object.keys(inputProps)))\n\nconst rawAttrs = useRawAttrs()\nconst disabled = useFormDisabled()\nconst ns = useNamespace('autocomplete')\n\nconst inputRef = ref<InputInstance>()\nconst regionRef = ref<HTMLElement>()\nconst popperRef = ref<TooltipInstance>()\nconst listboxRef = ref<HTMLElement>()\n\nlet readonly = false\nlet ignoreFocusEvent = false\nconst suggestions = ref<AutocompleteData>([])\nconst highlightedIndex = ref(-1)\nconst dropdownWidth = ref('')\nconst activated = ref(false)\nconst suggestionDisabled = ref(false)\nconst loading = ref(false)\n\nconst listboxId = useId()\nconst styles = computed(() => rawAttrs.style as StyleValue)\n\nconst suggestionVisible = computed(() => {\n const isValidData = suggestions.value.length > 0\n return (isValidData || loading.value) && activated.value\n})\n\nconst suggestionLoading = computed(() => !props.hideLoading && loading.value)\n\nconst refInput = computed<HTMLInputElement[]>(() => {\n if (inputRef.value) {\n return Array.from<HTMLInputElement>(\n inputRef.value.$el.querySelectorAll('input')\n )\n }\n return []\n})\n\nconst onSuggestionShow = () => {\n if (suggestionVisible.value) {\n dropdownWidth.value = `${inputRef.value!.$el.offsetWidth}px`\n }\n}\n\nconst onHide = () => {\n highlightedIndex.value = -1\n}\n\nconst getData = async (queryString: string) => {\n if (suggestionDisabled.value) return\n\n const cb = (suggestionList: AutocompleteData) => {\n loading.value = false\n if (suggestionDisabled.value) return\n\n if (isArray(suggestionList)) {\n suggestions.value = suggestionList\n highlightedIndex.value = props.highlightFirstItem ? 0 : -1\n } else {\n throwError(COMPONENT_NAME, 'autocomplete suggestions must be an array')\n }\n }\n\n loading.value = true\n if (isArray(props.fetchSuggestions)) {\n cb(props.fetchSuggestions)\n } else {\n const result = await props.fetchSuggestions(queryString, cb)\n if (isArray(result)) cb(result)\n }\n}\n\nconst debounce = computed(() => props.debounce)\nconst debouncedGetData = useDebounceFn(getData, debounce)\n\nconst handleInput = (value: string) => {\n const valuePresented = !!value\n\n emit(INPUT_EVENT, value)\n emit(UPDATE_MODEL_EVENT, value)\n\n suggestionDisabled.value = false\n activated.value ||= valuePresented\n\n if (!props.triggerOnFocus && !value) {\n suggestionDisabled.value = true\n suggestions.value = []\n return\n }\n\n debouncedGetData(value)\n}\n\nconst handleMouseDown = (event: MouseEvent) => {\n if (disabled.value) return\n if (\n (event.target as HTMLElement)?.tagName !== 'INPUT' ||\n refInput.value.includes(document.activeElement as HTMLInputElement)\n ) {\n activated.value = true\n }\n}\n\nconst handleChange = (value: string | number) => {\n emit(CHANGE_EVENT, value)\n}\n\nconst handleFocus = (evt: FocusEvent) => {\n if (!ignoreFocusEvent) {\n activated.value = true\n emit('focus', evt)\n const queryString = props.modelValue ?? ''\n if (props.triggerOnFocus && !readonly) {\n debouncedGetData(String(queryString))\n }\n } else {\n ignoreFocusEvent = false\n }\n}\n\nconst handleBlur = (evt: FocusEvent) => {\n setTimeout(() => {\n // validate current focus event is inside el-tooltip-content\n // if so, ignore the blur event and the next focus event\n if (popperRef.value?.isFocusInsideContent()) {\n ignoreFocusEvent = true\n return\n }\n activated.value && close()\n emit('blur', evt)\n })\n}\n\nconst handleClear = () => {\n activated.value = false\n emit(UPDATE_MODEL_EVENT, '')\n emit('clear')\n}\n\nconst handleKeyEnter = async () => {\n if (inputRef.value?.isComposing) {\n return\n }\n\n if (\n suggestionVisible.value &&\n highlightedIndex.value >= 0 &&\n highlightedIndex.value < suggestions.value.length\n ) {\n handleSelect(suggestions.value[highlightedIndex.value])\n } else {\n if (props.selectWhenUnmatched) {\n emit('select', { value: props.modelValue })\n suggestions.value = []\n highlightedIndex.value = -1\n }\n activated.value = true\n debouncedGetData(String(props.modelValue))\n }\n}\n\nconst handleKeyEscape = (evt: Event) => {\n if (suggestionVisible.value) {\n evt.preventDefault()\n evt.stopPropagation()\n close()\n }\n}\n\nconst close = () => {\n activated.value = false\n}\n\nconst focus = () => {\n inputRef.value?.focus()\n}\n\nconst blur = () => {\n inputRef.value?.blur()\n}\n\nconst handleSelect = async (item: any) => {\n emit(INPUT_EVENT, item[props.valueKey])\n emit(UPDATE_MODEL_EVENT, item[props.valueKey])\n emit('select', item)\n suggestions.value = []\n highlightedIndex.value = -1\n}\n\nconst highlight = (index: number) => {\n if (!suggestionVisible.value || loading.value) return\n\n if (index < 0) {\n if (!props.loopNavigation) {\n highlightedIndex.value = -1\n return\n }\n index = suggestions.value.length - 1\n }\n\n if (index >= suggestions.value.length) {\n index = props.loopNavigation ? 0 : suggestions.value.length - 1\n }\n const [suggestion, suggestionList] = getSuggestionContext()\n const highlightItem = suggestionList[index]\n const scrollTop = suggestion.scrollTop\n const { offsetTop, scrollHeight } = highlightItem\n\n if (offsetTop + scrollHeight > scrollTop + suggestion.clientHeight) {\n suggestion.scrollTop = offsetTop + scrollHeight - suggestion.clientHeight\n }\n if (offsetTop < scrollTop) {\n suggestion.scrollTop = offsetTop\n }\n highlightedIndex.value = index\n inputRef.value?.ref?.setAttribute(\n 'aria-activedescendant',\n `${listboxId.value}-item-${highlightedIndex.value}`\n )\n}\nconst getSuggestionContext = () => {\n const suggestion = regionRef.value!.querySelector(\n `.${ns.be('suggestion', 'wrap')}`\n )!\n const suggestionList = suggestion.querySelectorAll<HTMLElement>(\n `.${ns.be('suggestion', 'list')} li`\n )\n return [suggestion, suggestionList] as const\n}\n\nconst stopHandle = onClickOutside(listboxRef, (event: FocusEvent) => {\n // Prevent closing if focus is inside popper content\n if (popperRef.value?.isFocusInsideContent()) return\n const hadIgnoredFocus = ignoreFocusEvent\n ignoreFocusEvent = false\n if (!suggestionVisible.value) return\n if (hadIgnoredFocus) {\n handleBlur(new FocusEvent('blur', event))\n } else {\n close()\n }\n})\n\nconst handleKeydown = (e: KeyboardEvent | Event) => {\n const code = getEventCode(e as KeyboardEvent)\n switch (code) {\n case EVENT_CODE.up:\n e.preventDefault()\n highlight(highlightedIndex.value - 1)\n break\n case EVENT_CODE.down:\n e.preventDefault()\n highlight(highlightedIndex.value + 1)\n break\n case EVENT_CODE.enter:\n case EVENT_CODE.numpadEnter:\n e.preventDefault()\n handleKeyEnter()\n break\n case EVENT_CODE.tab:\n close()\n break\n case EVENT_CODE.esc:\n handleKeyEscape(e)\n break\n case EVENT_CODE.home:\n e.preventDefault()\n highlight(0)\n break\n case EVENT_CODE.end:\n e.preventDefault()\n highlight(suggestions.value.length - 1)\n break\n case EVENT_CODE.pageUp:\n e.preventDefault()\n highlight(Math.max(0, highlightedIndex.value - 10))\n break\n case EVENT_CODE.pageDown:\n e.preventDefault()\n highlight(\n Math.min(suggestions.value.length - 1, highlightedIndex.value + 10)\n )\n break\n }\n}\n\nonBeforeUnmount(() => {\n stopHandle?.()\n})\n\nonMounted(() => {\n const inputElement = inputRef.value?.ref\n if (!inputElement) return\n ;[\n { key: 'role', value: 'textbox' },\n { key: 'aria-autocomplete', value: 'list' },\n { key: 'aria-controls', value: listboxId.value },\n {\n key: 'aria-activedescendant',\n value: `${listboxId.value}-item-${highlightedIndex.value}`,\n },\n ].forEach(({ key, value }) => inputElement.setAttribute(key, value))\n // get readonly attr\n readonly = inputElement.hasAttribute('readonly')\n})\n\ndefineExpose({\n /** @description the index of the currently highlighted item */\n highlightedIndex,\n /** @description autocomplete whether activated */\n activated,\n /** @description remote search loading status */\n loading,\n /** @description el-input component instance */\n inputRef,\n /** @description el-tooltip component instance */\n popperRef,\n /** @description fetch suggestions result */\n suggestions,\n /** @description triggers when a suggestion is clicked */\n handleSelect,\n /** @description handle keyboard enter event */\n handleKeyEnter,\n /** @description focus the input element */\n focus,\n /** @description blur the input element */\n blur,\n /** @description close suggestion */\n close,\n /** @description highlight an item in a suggestion */\n highlight,\n /** @description loading suggestion list */\n getData,\n})\n</script>\n"],"mappings":""}