{"version":3,"file":"tab-panel.cjs","sources":["../../../components/tab/tab_panel.vue"],"sourcesContent":["<template>\n  <div\n    v-show=\"!hidePanel\"\n    :id=\"`dt-panel-${id}`\"\n    role=\"tabpanel\"\n    :tabindex=\"isFirstElementFocusable ? -1 : 0\"\n    :aria-labelledby=\"`dt-tab-${tabId}`\"\n    :aria-hidden=\"`${hidePanel}`\"\n    :class=\"tabPanelClass\"\n    data-qa=\"dt-tab-panel\"\n  >\n    <!-- @slot Default slot for Tab Panel -->\n    <slot />\n  </div>\n</template>\n\n<script>\nimport Modal from '@/common/mixins/modal';\n\n/**\n * Tabs allow users to navigation between grouped content in different views while within the same page context.\n * @see https://dialtone.dialpad.com/components/tabs.html\n */\nexport default {\n  name: 'DtTabPanel',\n\n  mixins: [Modal],\n\n  inject: ['groupContext'],\n\n  props: {\n    /**\n     * Id of the panel\n     */\n    id: {\n      type: String,\n      required: true,\n    },\n\n    /**\n     * Id of the associated tab\n     */\n    tabId: {\n      type: String,\n      required: true,\n    },\n\n    /**\n    * If true, hides the tab content\n     * @values true, false\n    */\n    hidden: {\n      type: Boolean,\n      default: false,\n    },\n\n    /**\n     * Used to customize the tab element\n     */\n    tabPanelClass: {\n      type: [String, Array, Object],\n      default: '',\n    },\n  },\n\n  data () {\n    return {\n      isFirstElementFocusable: false,\n    };\n  },\n\n  computed: {\n    hidePanel () {\n      return this.groupContext.selected !== this.id || this.hidden;\n    },\n  },\n\n  async mounted () {\n    const firstFocusableElement = await this.getFirstFocusableElement(this.$el);\n\n    if (!firstFocusableElement) {\n      this.isFirstElementFocusable = false;\n    } else {\n      // If the first focusable element isn't the first element in the panel,\n      // then we need to set the panel tabindex to 0.\n      // See notes in https://www.w3.org/WAI/ARIA/apg/patterns/tabpanel/\n      this.isFirstElementFocusable = this.isFirstElementOfPanel(firstFocusableElement);\n    }\n  },\n\n  methods: {\n    isFirstElementOfPanel (element) {\n      let current = element;\n      let isFirstElement = true;\n\n      while (current) {\n        if (current.previousElementSibling !== null) {\n          isFirstElement = false;\n          break;\n        }\n        current = current.parentNode !== this.$el ? current.parentNode : null;\n      }\n\n      return isFirstElement;\n    },\n  },\n};\n</script>\n"],"names":["_sfc_main","Modal","firstFocusableElement","element","current","isFirstElement"],"mappings":"qNAuBAA,EAAA,CACA,KAAA,aAEA,OAAA,CAAAC,EAAAA,OAAA,EAEA,OAAA,CAAA,cAAA,EAEA,MAAA,CAIA,GAAA,CACA,KAAA,OACA,SAAA,EACA,EAKA,MAAA,CACA,KAAA,OACA,SAAA,EACA,EAMA,OAAA,CACA,KAAA,QACA,QAAA,EACA,EAKA,cAAA,CACA,KAAA,CAAA,OAAA,MAAA,MAAA,EACA,QAAA,EACA,CACA,EAEA,MAAA,CACA,MAAA,CACA,wBAAA,EACA,CACA,EAEA,SAAA,CACA,WAAA,CACA,OAAA,KAAA,aAAA,WAAA,KAAA,IAAA,KAAA,MACA,CACA,EAEA,MAAA,SAAA,CACA,MAAAC,EAAA,MAAA,KAAA,yBAAA,KAAA,GAAA,EAEAA,EAMA,KAAA,wBAAA,KAAA,sBAAAA,CAAA,EALA,KAAA,wBAAA,EAOA,EAEA,QAAA,CACA,sBAAAC,EAAA,CACA,IAAAC,EAAAD,EACAE,EAAA,GAEA,KAAAD,GAAA,CACA,GAAAA,EAAA,yBAAA,KAAA,CACAC,EAAA,GACA,KACA,CACAD,EAAAA,EAAA,aAAA,KAAA,IAAAA,EAAA,WAAA,IACA,CAEA,OAAAC,CACA,CACA,CACA"}