bootstrap-view/esm/components/transition/bv-transition.js

With more than 85 components, over 45 available plugins, several directives, and 1000+ icons, BootstrapVue provides one of the most comprehensive implementations of the Bootstrap v4 component and grid system available for Vue.js v2.6, complete with extens

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// Generic Bootstrap v4 fade (no-fade) transition component
//
// Assumes that `show` class is not required when
// the transition has finished the enter transition
// (show and fade classes are only applied during transition)

import { extend, mergeData } from '../../vue';
import { NAME_TRANSITION } from '../../constants/components';
import { PROP_TYPE_BOOLEAN, PROP_TYPE_OBJECT, PROP_TYPE_STRING } from '../../constants/props';
import { isPlainObject } from '../../utils/inspect';
import { makeProp } from '../../utils/props';

// --- Constants ---

var NO_FADE_PROPS = {
  name: '',
  enterClass: '',
  enterActiveClass: '',
  enterToClass: 'show',
  leaveClass: 'show',
  leaveActiveClass: '',
  leaveToClass: ''
};
var FADE_PROPS = _objectSpread(_objectSpread({}, NO_FADE_PROPS), {}, {
  enterActiveClass: 'fade',
  leaveActiveClass: 'fade'
});

// --- Props ---

export var props = {
  // Has no effect if `trans-props` provided
  appear: makeProp(PROP_TYPE_BOOLEAN, false),
  // Can be overridden by user supplied `trans-props`
  mode: makeProp(PROP_TYPE_STRING),
  // Only applicable to the built in transition
  // Has no effect if `trans-props` provided
  noFade: makeProp(PROP_TYPE_BOOLEAN, false),
  // For user supplied transitions (if needed)
  transProps: makeProp(PROP_TYPE_OBJECT)
};

// --- Main component ---

// @vue/component
export var BVTransition = /*#__PURE__*/extend({
  name: NAME_TRANSITION,
  functional: true,
  props: props,
  render: function render(h, _ref) {
    var children = _ref.children,
      data = _ref.data,
      props = _ref.props;
    var transProps = props.transProps;
    if (!isPlainObject(transProps)) {
      transProps = props.noFade ? NO_FADE_PROPS : FADE_PROPS;
      if (props.appear) {
        // Default the appear classes to equal the enter classes
        transProps = _objectSpread(_objectSpread({}, transProps), {}, {
          appear: true,
          appearClass: transProps.enterClass,
          appearActiveClass: transProps.enterActiveClass,
          appearToClass: transProps.enterToClass
        });
      }
    }
    transProps = _objectSpread(_objectSpread({
      mode: props.mode
    }, transProps), {}, {
      // We always need `css` true
      css: true
    });
    var dataCopy = _objectSpread({}, data);
    delete dataCopy.props;
    return h('transition',
    // Any transition event listeners will get merged here
    mergeData(dataCopy, {
      props: transProps
    }), children);
  }
});