bootstrap-vue/src/components/table/helpers/mixin-busy.js

BootstrapVue, with over 40 plugins and more than 75 custom components, provides one of the most comprehensive implementations of Bootstrap v4 components and grid system for Vue.js. With extensive and automated WAI-ARIA accessibility markup.

import { isFunction } from '../../../utils/inspect'

export default {
  props: {
    busy: {
      type: Boolean,
      default: false
    }
  },
  data() {
    return {
      localBusy: false
    }
  },
  computed: {
    computedBusy() {
      return this.busy || this.localBusy
    }
  },
  watch: {
    localBusy(newVal, oldVal) {
      if (newVal !== oldVal) {
        this.$emit('update:busy', newVal)
      }
    }
  },
  methods: {
    // Event handler helper
    stopIfBusy(evt) {
      if (this.computedBusy) {
        // If table is busy (via provider) then don't propagate
        evt.preventDefault()
        evt.stopPropagation()
        return true
      }
      return false
    },
    // Renter the busy indicator or return null if not busy
    renderBusy() {
      const h = this.$createElement

      // Return a busy indicator row, or null if not busy
      if (this.computedBusy && this.hasNormalizedSlot('table-busy')) {
        // Show the busy slot
        const trAttrs = {
          role: this.isStacked ? 'row' : null
        }
        const tdAttrs = {
          colspan: String(this.computedFields.length),
          role: this.isStacked ? 'cell' : null
        }
        return h(
          'tr',
          {
            key: 'table-busy-slot',
            staticClass: 'b-table-busy-slot',
            class: [
              isFunction(this.tbodyTrClass)
                ? this.tbodyTrClass(null, 'table-busy')
                : this.tbodyTrClass
            ],
            attrs: trAttrs
          },
          [h('td', { attrs: tdAttrs }, [this.normalizeSlot('table-busy', {})])]
        )
      } else {
        // We return null here so that we can determine if we need to
        // render the table items rows or not.
        return null
      }
    }
  }
}