yiyunjianzhuBeta/node_modules/vuetify/lib/components/VTabs/VTab.js

// Mixins
import { factory as GroupableFactory } from '../../mixins/groupable';
import Routable from '../../mixins/routable';
import Themeable from '../../mixins/themeable'; // Utilities

import { keyCodes } from './../../util/helpers';
import mixins from '../../util/mixins';
const baseMixins = mixins(Routable, // Must be after routable
// to overwrite activeClass
GroupableFactory('tabsBar'), Themeable);
export default baseMixins.extend().extend().extend({
  name: 'v-tab',
  props: {
    ripple: {
      type: [Boolean, Object],
      default: true
    }
  },
  data: () => ({
    proxyClass: 'v-tab--active'
  }),
  computed: {
    classes() {
      return {
        'v-tab': true,
        ...Routable.options.computed.classes.call(this),
        'v-tab--disabled': this.disabled,
        ...this.groupClasses
      };
    },

    value() {
      let to = this.to || this.href || '';

      if (this.$router && this.to === Object(this.to)) {
        const resolve = this.$router.resolve(this.to, this.$route, this.append);
        to = resolve.href;
      }

      return to.replace('#', '');
    }

  },

  mounted() {
    this.onRouteChange();
  },

  methods: {
    click(e) {
      // If user provides an
      // actual link, do not
      // prevent default
      if (this.href && this.href.indexOf('#') > -1) e.preventDefault();
      if (e.detail) this.$el.blur();
      this.$emit('click', e);
      this.to || this.toggle();
    }

  },

  render(h) {
    const {
      tag,
      data
    } = this.generateRouteLink();
    data.attrs = { ...data.attrs,
      'aria-selected': String(this.isActive),
      role: 'tab',
      tabindex: 0
    };
    data.on = { ...data.on,
      keydown: e => {
        if (e.keyCode === keyCodes.enter) this.click(e);
        this.$emit('keydown', e);
      }
    };
    return h(tag, data, this.$slots.default);
  }

});
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