code-lab/node_modules/vuetify/lib/components/transitions/createTransition.mjs

// Utilities
import { h, Transition, TransitionGroup } from 'vue';
import { genericComponent, propsFactory } from "../../util/index.mjs"; // Types
export const makeTransitionProps = propsFactory({
  disabled: Boolean,
  group: Boolean,
  hideOnLeave: Boolean,
  leaveAbsolute: Boolean,
  mode: String,
  origin: String
}, 'transition');
export function createCssTransition(name, origin, mode) {
  return genericComponent()({
    name,
    props: makeTransitionProps({
      mode,
      origin
    }),
    setup(props, _ref) {
      let {
        slots
      } = _ref;
      const functions = {
        onBeforeEnter(el) {
          if (props.origin) {
            el.style.transformOrigin = props.origin;
          }
        },
        onLeave(el) {
          if (props.leaveAbsolute) {
            const {
              offsetTop,
              offsetLeft,
              offsetWidth,
              offsetHeight
            } = el;
            el._transitionInitialStyles = {
              position: el.style.position,
              top: el.style.top,
              left: el.style.left,
              width: el.style.width,
              height: el.style.height
            };
            el.style.position = 'absolute';
            el.style.top = `${offsetTop}px`;
            el.style.left = `${offsetLeft}px`;
            el.style.width = `${offsetWidth}px`;
            el.style.height = `${offsetHeight}px`;
          }
          if (props.hideOnLeave) {
            el.style.setProperty('display', 'none', 'important');
          }
        },
        onAfterLeave(el) {
          if (props.leaveAbsolute && el?._transitionInitialStyles) {
            const {
              position,
              top,
              left,
              width,
              height
            } = el._transitionInitialStyles;
            delete el._transitionInitialStyles;
            el.style.position = position || '';
            el.style.top = top || '';
            el.style.left = left || '';
            el.style.width = width || '';
            el.style.height = height || '';
          }
        }
      };
      return () => {
        const tag = props.group ? TransitionGroup : Transition;
        return h(tag, {
          name: props.disabled ? '' : name,
          css: !props.disabled,
          ...(props.group ? undefined : {
            mode: props.mode
          }),
          ...(props.disabled ? {} : functions)
        }, slots.default);
      };
    }
  });
}
export function createJavascriptTransition(name, functions) {
  let mode = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 'in-out';
  return genericComponent()({
    name,
    props: {
      mode: {
        type: String,
        default: mode
      },
      disabled: Boolean,
      group: Boolean
    },
    setup(props, _ref2) {
      let {
        slots
      } = _ref2;
      const tag = props.group ? TransitionGroup : Transition;
      return () => {
        return h(tag, {
          name: props.disabled ? '' : name,
          css: !props.disabled,
          // mode: props.mode, // TODO: vuejs/vue-next#3104
          ...(props.disabled ? {} : functions)
        }, slots.default);
      };
    }
  });
}
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