element-plus/es/hooks/use-z-index/index.mjs

A Component Library for Vue 3

import { ref, getCurrentInstance, inject, computed, unref } from 'vue';
import { isNumber } from '../../utils/types.mjs';
import { isClient } from '@vueuse/core';

const initial = {
  current: 0
};
const zIndex = ref(0);
const defaultInitialZIndex = 2e3;
const ZINDEX_INJECTION_KEY = Symbol("elZIndexContextKey");
const zIndexContextKey = Symbol("zIndexContextKey");
const useZIndex = (zIndexOverrides) => {
  const increasingInjection = getCurrentInstance() ? inject(ZINDEX_INJECTION_KEY, initial) : initial;
  const zIndexInjection = zIndexOverrides || (getCurrentInstance() ? inject(zIndexContextKey, void 0) : void 0);
  const initialZIndex = computed(() => {
    const zIndexFromInjection = unref(zIndexInjection);
    return isNumber(zIndexFromInjection) ? zIndexFromInjection : defaultInitialZIndex;
  });
  const currentZIndex = computed(() => initialZIndex.value + zIndex.value);
  const nextZIndex = () => {
    increasingInjection.current++;
    zIndex.value = increasingInjection.current;
    return currentZIndex.value;
  };
  if (!isClient && !inject(ZINDEX_INJECTION_KEY)) ;
  return {
    initialZIndex,
    currentZIndex,
    nextZIndex
  };
};

export { ZINDEX_INJECTION_KEY, defaultInitialZIndex, useZIndex, zIndexContextKey };
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