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import { CSSMotionProps, MotionEventHandler, MotionEndEventHandler } from 'rc-motion';
// ================== Collapse Motion ==================
const getCollapsedHeight: MotionEventHandler = () => ({ height: 0, opacity: 0 });
const getRealHeight: MotionEventHandler = node => ({ height: node.scrollHeight, opacity: 1 });
const getCurrentHeight: MotionEventHandler = node => ({ height: node.offsetHeight });
const skipOpacityTransition: MotionEndEventHandler = (_, event) =>
(event as TransitionEvent).propertyName === 'height';
const collapseMotion: CSSMotionProps = {
motionName: 'ant-motion-collapse',
onAppearStart: getCollapsedHeight,
onEnterStart: getCollapsedHeight,
onAppearActive: getRealHeight,
onEnterActive: getRealHeight,
onLeaveStart: getCurrentHeight,
onLeaveActive: getCollapsedHeight,
onAppearEnd: skipOpacityTransition,
onEnterEnd: skipOpacityTransition,
onLeaveEnd: skipOpacityTransition,
motionDeadline: 500,
};
const getTransitionName = (rootPrefixCls: string, motion: string, transitionName?: string) => {
if (transitionName !== undefined) {
return transitionName;
}
return `${rootPrefixCls}-${motion}`;
};
export { getTransitionName };
export default collapseMotion;