@dialpad/dialtone
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Dialpad's Dialtone design system monorepo
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{"version":3,"file":"dropdown.vue.cjs","sources":["../../../components/dropdown/dropdown.vue"],"sourcesContent":["<!-- eslint-disable max-lines -->\n<template>\n <dt-popover\n ref=\"popover\"\n :content-width=\"contentWidth\"\n :open=\"open\"\n :placement=\"placement\"\n :initial-focus-element=\"openedWithKeyboard ? 'first' : 'dialog'\"\n :fallback-placements=\"fallbackPlacements\"\n padding=\"none\"\n role=\"menu\"\n :append-to=\"appendTo\"\n :modal=\"modal\"\n :max-height=\"maxHeight\"\n :max-width=\"maxWidth\"\n :open-with-arrow-keys=\"shouldOpenWithArrowKeys\"\n :open-on-context=\"openOnContext\"\n :tether=\"tether\"\n :transition=\"transition\"\n v-on=\"dropdownListeners\"\n >\n <template #anchor=\"{ attrs }\">\n <!-- @slot Anchor element that activates the dropdown -->\n <slot\n ref=\"anchor\"\n name=\"anchor\"\n v-bind=\"attrs\"\n />\n </template>\n <template #content=\"{ close }\">\n <!-- eslint-disable-next-line max-len -->\n <!-- eslint-disable-next-line vuejs-accessibility/mouse-events-have-key-events, vuejs-accessibility/no-static-element-interactions -->\n <ul\n :id=\"listId\"\n ref=\"listWrapper\"\n :class=\"listClasses\"\n data-qa=\"dt-dropdown-list-wrapper\"\n @mouseleave=\"clearHighlightIndex\"\n @mousemove.capture=\"onMouseHighlight\"\n >\n <!-- @slot Slot for the list component -->\n <slot\n name=\"list\"\n :close=\"close\"\n />\n <sr-only-close-button\n v-if=\"showVisuallyHiddenClose\"\n :visually-hidden-close-label=\"visuallyHiddenCloseLabel\"\n :tabindex=\"isArrowKeyNav ? -1 : 0\"\n @close=\"close\"\n />\n </ul>\n </template>\n <template #footerContent=\"{ close }\">\n <!-- @slot Slot for the footer content -->\n <slot\n name=\"footer\"\n :close=\"close\"\n />\n </template>\n </dt-popover>\n</template>\n\n<script>\nimport KeyboardNavigation from '@/common/mixins/keyboard_list_navigation';\nimport { DtPopover, POPOVER_APPEND_TO_VALUES } from '@/components/popover';\nimport { LIST_ITEM_NAVIGATION_TYPES } from '@/components/list_item';\nimport { DROPDOWN_PADDING_CLASSES } from './dropdown_constants';\nimport { getUniqueString } from '@/common/utils';\nimport { EVENT_KEYNAMES } from '@/common/constants';\nimport SrOnlyCloseButtonMixin from '@/common/mixins/sr_only_close_button';\nimport SrOnlyCloseButton from '@/common/sr_only_close_button.vue';\n\nexport default {\n name: 'DtDropdown',\n\n components: {\n DtPopover,\n SrOnlyCloseButton,\n },\n\n mixins: [\n KeyboardNavigation({\n indexKey: 'highlightIndex',\n idKey: 'highlightId',\n listElementKey: 'getListElement',\n listItemRole: 'menuitem',\n afterHighlightMethod: 'afterHighlight',\n beginningOfListMethod: 'beginningOfListMethod',\n endOfListMethod: 'endOfListMethod',\n activeItemKey: 'activeItemEl',\n focusOnKeyboardNavigation: true,\n }),\n SrOnlyCloseButtonMixin,\n ],\n\n props: {\n /**\n * Controls whether the dropdown is shown. Leaving this null will have the dropdown trigger on click by default.\n * If you set this value, the default trigger behavior will be disabled and you can control it as you need.\n * Supports .sync modifier\n */\n open: {\n type: Boolean,\n default: null,\n },\n\n /**\n * Opens the dropdown on right click (context menu). If you set this value to `true`,\n * the default trigger behavior will be disabled.\n */\n openOnContext: {\n type: Boolean,\n default: false,\n },\n\n /**\n * Vertical padding size around the list element.\n * @values none, small, large\n */\n padding: {\n type: String,\n default: 'small',\n validator: (padding) => {\n return Object.keys(DROPDOWN_PADDING_CLASSES).some((item) => item === padding);\n },\n },\n\n /**\n * Determines modal state, dropdown has a modal overlay preventing interaction with elements\n * below it, but it is invisible.\n */\n modal: {\n type: Boolean,\n default: true,\n },\n\n /**\n * Width configuration for the popover content. When its value is 'anchor',\n * the popover content will have the same width as the anchor.\n * @values null, anchor\n */\n contentWidth: {\n type: String,\n default: null,\n },\n\n /**\n * Determines maximum height for the popover before overflow.\n * Possible units rem|px|em\n */\n maxHeight: {\n type: String,\n default: '',\n },\n\n /**\n * Determines maximum width for the popover before overflow.\n * Possible units rem|px|%|em\n */\n maxWidth: {\n type: String,\n default: '',\n },\n\n /**\n * Sets an ID on the list element of the component. Used by several aria attributes\n * as well as when deriving the IDs for each item.\n */\n listId: {\n type: String,\n default () { return getUniqueString(); },\n },\n\n /**\n * The type of navigation that this component should support.\n * - \"arrow-keys\" for items that are navigated with UP/DOWN keys.\n * - \"tab\" for items that are navigated using the TAB key.\n * - \"none\" for static items that are not interactive.\n * @values arrow-keys, tab, none\n */\n navigationType: {\n type: String,\n default: LIST_ITEM_NAVIGATION_TYPES.ARROW_KEYS,\n validator: (t) => Object.values(LIST_ITEM_NAVIGATION_TYPES).includes(t),\n },\n\n /**\n * If the dropdown does not fit in the direction described by \"placement\",\n * it will attempt to change it's direction to the \"fallbackPlacements\".\n *\n * @values top, top-start, top-end,\n * right, right-start, right-end,\n * left, left-start, left-end,\n * bottom, bottom-start, bottom-end,\n * auto, auto-start, auto-end\n * */\n fallbackPlacements: {\n type: Array,\n default: () => {\n return ['auto'];\n },\n },\n\n /**\n * The direction the dropdown displays relative to the anchor.\n */\n placement: {\n type: String,\n default: 'bottom',\n },\n\n /**\n * A method that will be called when the selection goes past the beginning of the list.\n */\n onBeginningOfList: {\n type: Function,\n default: null,\n },\n\n /**\n * A method that will be called when the selection goes past the end of the list.\n */\n onEndOfList: {\n type: Function,\n default: null,\n },\n\n /**\n * Additional class for the wrapper list element.\n */\n listClass: {\n type: [String, Array, Object],\n default: '',\n },\n\n /**\n * Sets the element to which the popover is going to append to.\n * 'body' will append to the nearest body (supports shadow DOM).\n * @values 'body', 'parent', HTMLElement,\n */\n appendTo: {\n type: [HTMLElement, String],\n default: 'body',\n validator: appendTo => {\n return POPOVER_APPEND_TO_VALUES.includes(appendTo) ||\n (appendTo instanceof HTMLElement);\n },\n },\n\n /**\n * If set to false the dialog will display over top of the anchor when there is insufficient space.\n * If set to true it will never move from its position relative to the anchor and will clip instead.\n * <a\n * class=\"d-link\"\n * href=\"https://popper.js.org/docs/v2/modifiers/prevent-overflow/#tether\"\n * target=\"_blank\"\n * >\n * Popper.js docs\n * </a>\n * @values true, false\n */\n tether: {\n type: Boolean,\n default: true,\n },\n\n /**\n * Named transition when the content display is toggled.\n * @see DtLazyShow\n */\n transition: {\n type: String,\n default: 'fade',\n },\n },\n\n emits: [\n /**\n * Event fired when the highlight changes\n *\n * @event highlight\n * @type {Number}\n */\n 'highlight',\n\n /**\n * Event fired when dropdown is shown or hidden\n *\n * @event opened\n * @type {Boolean | Array}\n */\n 'opened',\n\n /**\n * Event fired to sync the open prop with the parent component\n * @event update:open\n */\n 'update:open',\n ],\n\n data () {\n return {\n LIST_ITEM_NAVIGATION_TYPES,\n DROPDOWN_PADDING_CLASSES,\n EVENT_KEYNAMES,\n openedWithKeyboard: false,\n isOpen: null,\n };\n },\n\n computed: {\n dropdownListeners () {\n return {\n ...this.$listeners,\n\n opened: isPopoverOpen => {\n this.updateInitialHighlightIndex(isPopoverOpen);\n },\n\n keydown: event => {\n const eventCode = event.code;\n\n switch (eventCode) {\n case EVENT_KEYNAMES.up:\n case EVENT_KEYNAMES.arrowup:\n this.onUpKeyPress(event);\n event.stopPropagation();\n event.preventDefault();\n break;\n case EVENT_KEYNAMES.down:\n case EVENT_KEYNAMES.arrowdown:\n this.onDownKeyPress(event);\n event.stopPropagation();\n event.preventDefault();\n break;\n case EVENT_KEYNAMES.space:\n case EVENT_KEYNAMES.spacebar:\n this.onSpaceKey();\n break;\n case EVENT_KEYNAMES.enter:\n this.onEnterKey();\n break;\n case EVENT_KEYNAMES.home:\n this.onHomeKeyPress(event);\n event.stopPropagation();\n event.preventDefault();\n break;\n case EVENT_KEYNAMES.end:\n this.onEndKeyPress(event);\n event.stopPropagation();\n event.preventDefault();\n break;\n default:\n this.onKeyPress(event);\n break;\n }\n\n this.$emit('keydown', event);\n },\n };\n },\n\n beginningOfListMethod () {\n return this.onBeginningOfList || this.jumpToEnd;\n },\n\n endOfListMethod () {\n return this.onEndOfList || this.jumpToBeginning;\n },\n\n activeItemEl () {\n return this.getListElement().querySelector('#' + this.highlightId);\n },\n\n isArrowKeyNav () {\n return this.navigationType === this.LIST_ITEM_NAVIGATION_TYPES.ARROW_KEYS;\n },\n\n listClasses () {\n return [\n 'd-dropdown-list',\n DROPDOWN_PADDING_CLASSES[this.padding],\n this.listClass,\n { 'd-context-menu-list': this.openOnContext },\n ];\n },\n\n shouldOpenWithArrowKeys () {\n return !this.openOnContext;\n },\n },\n\n methods: {\n onMouseHighlight (e) {\n const liElement = e.target.closest('li');\n\n if (liElement && liElement.role && this.highlightId !== liElement.id) {\n this.setHighlightId(liElement.id);\n liElement.focus();\n }\n },\n\n getListElement () {\n return this.$refs.listWrapper;\n },\n\n clearHighlightIndex () {\n this.setHighlightIndex(-1);\n },\n\n afterHighlight () {\n if (this.visuallyHiddenClose && this.highlightIndex === this._itemsLength() - 1) {\n return;\n }\n\n this.$emit('highlight', this.highlightIndex);\n },\n\n updateInitialHighlightIndex (isPopoverOpen) {\n this.isOpen = isPopoverOpen;\n\n if (isPopoverOpen) {\n if (this.openedWithKeyboard && this.isArrowKeyNav) {\n this.setHighlightIndex(0);\n }\n this.$emit('opened', true);\n } else {\n this.clearHighlightIndex();\n this.openedWithKeyboard = false;\n this.$emit('opened', false);\n }\n },\n\n onSpaceKey () {\n if (!this.open) {\n this.openedWithKeyboard = true;\n }\n },\n\n onEnterKey () {\n if (!this.open) {\n this.openedWithKeyboard = true;\n }\n },\n\n onUpKeyPress () {\n if (!this.isOpen) {\n this.openedWithKeyboard = true;\n return;\n }\n if (this.isArrowKeyNav) {\n 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