wiki/node_modules/element-plus/es/components/roving-focus-group/src/roving-focus-item.mjs

import { defineComponent, inject, ref, computed, unref, provide, nextTick, resolveComponent, openBlock, createBlock, withCtx, renderSlot } from 'vue';
import { ElCollectionItem, ROVING_FOCUS_COLLECTION_INJECTION_KEY as COLLECTION_INJECTION_KEY } from './roving-focus-group.mjs';
import { ROVING_FOCUS_GROUP_INJECTION_KEY, ROVING_FOCUS_GROUP_ITEM_INJECTION_KEY } from './tokens.mjs';
import { getFocusIntent, reorderArray, focusFirst } from './utils.mjs';
import _export_sfc from '../../../_virtual/plugin-vue_export-helper.mjs';
import { useId } from '../../../hooks/use-id/index.mjs';
import { composeEventHandlers } from '../../../utils/dom/event.mjs';
import { EVENT_CODE } from '../../../constants/aria.mjs';

const _sfc_main = defineComponent({
  components: {
    ElRovingFocusCollectionItem: ElCollectionItem
  },
  props: {
    focusable: {
      type: Boolean,
      default: true
    },
    active: {
      type: Boolean,
      default: false
    }
  },
  emits: ["mousedown", "focus", "keydown"],
  setup(props, { emit }) {
    const { currentTabbedId, loop, onItemFocus, onItemShiftTab } = inject(ROVING_FOCUS_GROUP_INJECTION_KEY, void 0);
    const { getItems } = inject(COLLECTION_INJECTION_KEY, void 0);
    const id = useId();
    const rovingFocusGroupItemRef = ref();
    const handleMousedown = composeEventHandlers((e) => {
      emit("mousedown", e);
    }, (e) => {
      if (!props.focusable) {
        e.preventDefault();
      } else {
        onItemFocus(unref(id));
      }
    });
    const handleFocus = composeEventHandlers((e) => {
      emit("focus", e);
    }, () => {
      onItemFocus(unref(id));
    });
    const handleKeydown = composeEventHandlers((e) => {
      emit("keydown", e);
    }, (e) => {
      const { code, shiftKey, target, currentTarget } = e;
      if (code === EVENT_CODE.tab && shiftKey) {
        onItemShiftTab();
        return;
      }
      if (target !== currentTarget)
        return;
      const focusIntent = getFocusIntent(e);
      if (focusIntent) {
        e.preventDefault();
        const items = getItems().filter((item) => item.focusable);
        let elements = items.map((item) => item.ref);
        switch (focusIntent) {
          case "last": {
            elements.reverse();
            break;
          }
          case "prev":
          case "next": {
            if (focusIntent === "prev") {
              elements.reverse();
            }
            const currentIdx = elements.indexOf(currentTarget);
            elements = loop.value ? reorderArray(elements, currentIdx + 1) : elements.slice(currentIdx + 1);
            break;
          }
        }
        nextTick(() => {
          focusFirst(elements);
        });
      }
    });
    const isCurrentTab = computed(() => currentTabbedId.value === unref(id));
    provide(ROVING_FOCUS_GROUP_ITEM_INJECTION_KEY, {
      rovingFocusGroupItemRef,
      tabIndex: computed(() => unref(isCurrentTab) ? 0 : -1),
      handleMousedown,
      handleFocus,
      handleKeydown
    });
    return {
      id,
      handleKeydown,
      handleFocus,
      handleMousedown
    };
  }
});
function _sfc_render(_ctx, _cache, $props, $setup, $data, $options) {
  const _component_el_roving_focus_collection_item = resolveComponent("el-roving-focus-collection-item");
  return openBlock(), createBlock(_component_el_roving_focus_collection_item, {
    id: _ctx.id,
    focusable: _ctx.focusable,
    active: _ctx.active
  }, {
    default: withCtx(() => [
      renderSlot(_ctx.$slots, "default")
    ]),
    _: 3
  }, 8, ["id", "focusable", "active"]);
}
var ElRovingFocusItem = /* @__PURE__ */ _export_sfc(_sfc_main, [["render", _sfc_render], ["__file", "roving-focus-item.vue"]]);

export { ElRovingFocusItem as default };
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