src/index.js

import React from 'react';
import PropTypes from 'prop-types';
import { findDOMNode, createPortal } from 'react-dom';
import contains from 'rc-util/lib/Dom/contains';
import addEventListener from 'rc-util/lib/Dom/addEventListener';
import ContainerRender from 'rc-util/lib/ContainerRender';
import Portal from 'rc-util/lib/Portal';
import classNames from 'classnames';

import { getAlignFromPlacement, getAlignPopupClassName } from './utils';
import Popup from './Popup';

function noop() {
}

function returnEmptyString() {
  return '';
}

function returnDocument() {
  return window.document;
}

const ALL_HANDLERS = ['onClick', 'onMouseDown', 'onTouchStart', 'onMouseEnter',
  'onMouseLeave', 'onFocus', 'onBlur', 'onContextMenu'];

const IS_REACT_16 = !!createPortal;

const contextTypes = {
  rcTrigger: PropTypes.shape({
    onPopupMouseDown: PropTypes.func,
  }),
};

export default class Trigger extends React.Component {
  static propTypes = {
    children: PropTypes.any,
    action: PropTypes.oneOfType([PropTypes.string, PropTypes.arrayOf(PropTypes.string)]),
    showAction: PropTypes.any,
    hideAction: PropTypes.any,
    getPopupClassNameFromAlign: PropTypes.any,
    onPopupVisibleChange: PropTypes.func,
    afterPopupVisibleChange: PropTypes.func,
    popup: PropTypes.oneOfType([
      PropTypes.node,
      PropTypes.func,
    ]).isRequired,
    popupStyle: PropTypes.object,
    prefixCls: PropTypes.string,
    popupClassName: PropTypes.string,
    className: PropTypes.string,
    popupPlacement: PropTypes.string,
    builtinPlacements: PropTypes.object,
    popupTransitionName: PropTypes.oneOfType([
      PropTypes.string,
      PropTypes.object,
    ]),
    popupAnimation: PropTypes.any,
    mouseEnterDelay: PropTypes.number,
    mouseLeaveDelay: PropTypes.number,
    zIndex: PropTypes.number,
    focusDelay: PropTypes.number,
    blurDelay: PropTypes.number,
    getPopupContainer: PropTypes.func,
    getDocument: PropTypes.func,
    forceRender: PropTypes.bool,
    destroyPopupOnHide: PropTypes.bool,
    mask: PropTypes.bool,
    maskClosable: PropTypes.bool,
    onPopupAlign: PropTypes.func,
    popupAlign: PropTypes.object,
    popupVisible: PropTypes.bool,
    defaultPopupVisible: PropTypes.bool,
    maskTransitionName: PropTypes.oneOfType([
      PropTypes.string,
      PropTypes.object,
    ]),
    maskAnimation: PropTypes.string,
    stretch: PropTypes.string,
    alignPoint: PropTypes.bool, // Maybe we can support user pass position in the future
    disabled: PropTypes.bool,
  };

  static contextTypes = contextTypes;

  static childContextTypes = contextTypes;

  static defaultProps = {
    prefixCls: 'rc-trigger-popup',
    getPopupClassNameFromAlign: returnEmptyString,
    getDocument: returnDocument,
    onPopupVisibleChange: noop,
    afterPopupVisibleChange: noop,
    onPopupAlign: noop,
    popupClassName: '',
    mouseEnterDelay: 0,
    mouseLeaveDelay: 0.1,
    focusDelay: 0,
    blurDelay: 0.15,
    popupStyle: {},
    destroyPopupOnHide: false,
    popupAlign: {},
    defaultPopupVisible: false,
    mask: false,
    maskClosable: true,
    action: [],
    showAction: [],
    hideAction: [],
    disabled: false,
  };

  constructor(props) {
    super(props);

    let popupVisible;
    if ('popupVisible' in props) {
      popupVisible = !!props.popupVisible;
    } else {
      popupVisible = !!props.defaultPopupVisible;
    }

    this.prevPopupVisible = popupVisible;

    this.state = {
      popupVisible,
    };
  }

  getChildContext() {
    return {
      rcTrigger: {
        onPopupMouseDown: this.onPopupMouseDown,
      },
    };
  }

  componentWillMount() {
    ALL_HANDLERS.forEach((h) => {
      this[`fire${h}`] = (e) => {
        this.fireEvents(h, e);
      };
    });
  }

  componentDidMount() {
    this.componentDidUpdate({}, {
      popupVisible: this.state.popupVisible,
    });
  }

  componentWillReceiveProps({ popupVisible }) {
    if (popupVisible !== undefined) {
      this.setState({
        popupVisible,
      });
    }
  }

  componentDidUpdate(_, prevState) {
    const props = this.props;
    const state = this.state;
    const triggerAfterPopupVisibleChange = () => {
      if (prevState.popupVisible !== state.popupVisible) {
        props.afterPopupVisibleChange(state.popupVisible);
      }
    };
    if (!IS_REACT_16) {
      this.renderComponent(null, triggerAfterPopupVisibleChange);
    }

    this.prevPopupVisible = prevState.popupVisible;

    // We must listen to `mousedown` or `touchstart`, edge case:
    // https://github.com/ant-design/ant-design/issues/5804
    // https://github.com/react-component/calendar/issues/250
    // https://github.com/react-component/trigger/issues/50
    if (state.popupVisible) {
      let currentDocument;
      if (!this.clickOutsideHandler && (this.isClickToHide() || this.isContextMenuToShow())) {
        currentDocument = props.getDocument();
        this.clickOutsideHandler = addEventListener(currentDocument,
          'mousedown', this.onDocumentClick);
      }
      // always hide on mobile
      if (!this.touchOutsideHandler) {
        currentDocument = currentDocument || props.getDocument();
        this.touchOutsideHandler = addEventListener(currentDocument,
          'touchstart', this.onDocumentClick);
      }
      // close popup when trigger type contains 'onContextMenu' and document is scrolling.
      if (!this.contextMenuOutsideHandler1 && this.isContextMenuToShow()) {
        currentDocument = currentDocument || props.getDocument();
        this.contextMenuOutsideHandler1 = addEventListener(currentDocument,
          'scroll', this.onContextMenuClose);
      }
      // close popup when trigger type contains 'onContextMenu' and window is blur.
      if (!this.contextMenuOutsideHandler2 && this.isContextMenuToShow()) {
        this.contextMenuOutsideHandler2 = addEventListener(window,
          'blur', this.onContextMenuClose);
      }
      return;
    }

    this.clearOutsideHandler();
  }

  componentWillUnmount() {
    this.clearDelayTimer();
    this.clearOutsideHandler();
    clearTimeout(this.mouseDownTimeout);
  }

  onMouseEnter = (e) => {
    if (this.props.disabled) return;
    const { mouseEnterDelay } = this.props;
    this.fireEvents('onMouseEnter', e);
    this.delaySetPopupVisible(true, mouseEnterDelay, mouseEnterDelay ? null : e);
  }

  onMouseMove = (e) => {
    this.fireEvents('onMouseMove', e);
    this.setPoint(e);
  };

  onMouseLeave = (e) => {
    if (this.props.disabled) return;
    this.fireEvents('onMouseLeave', e);
    this.delaySetPopupVisible(false, this.props.mouseLeaveDelay);
  }

  onPopupMouseEnter = () => {
    this.clearDelayTimer();
  }

  onPopupMouseLeave = (e) => {
    if (this.props.disabled) return;
    // https://github.com/react-component/trigger/pull/13
    // react bug?
    if (e.relatedTarget && !e.relatedTarget.setTimeout &&
      this._component &&
      this._component.getPopupDomNode &&
      contains(this._component.getPopupDomNode(), e.relatedTarget)) {
      return;
    }
    this.delaySetPopupVisible(false, this.props.mouseLeaveDelay);
  }

  onFocus = (e) => {
    if (this.props.disabled) return;
    this.fireEvents('onFocus', e);
    // incase focusin and focusout
    this.clearDelayTimer();
    if (this.isFocusToShow()) {
      this.focusTime = Date.now();
      this.delaySetPopupVisible(true, this.props.focusDelay);
    }
  }

  onMouseDown = (e) => {
    this.fireEvents('onMouseDown', e);
    this.preClickTime = Date.now();
  }

  onTouchStart = (e) => {
    this.fireEvents('onTouchStart', e);
    this.preTouchTime = Date.now();
  }

  onBlur = (e) => {
    if (this.props.disabled) return;
    this.fireEvents('onBlur', e);
    this.clearDelayTimer();
    if (this.isBlurToHide()) {
      this.delaySetPopupVisible(false, this.props.blurDelay);
    }
  }

  onContextMenu = (e) => {
    if (this.props.disabled) return;
    e.preventDefault();
    this.fireEvents('onContextMenu', e);
    this.setPopupVisible(true, e);
  }

  onContextMenuClose = () => {
    if (this.isContextMenuToShow()) {
      this.close();
    }
  }

  onClick = (event) => {
    if (this.props.disabled) return;
    this.fireEvents('onClick', event);
    // focus will trigger click
    if (this.focusTime) {
      let preTime;
      if (this.preClickTime && this.preTouchTime) {
        preTime = Math.min(this.preClickTime, this.preTouchTime);
      } else if (this.preClickTime) {
        preTime = this.preClickTime;
      } else if (this.preTouchTime) {
        preTime = this.preTouchTime;
      }
      if (Math.abs(preTime - this.focusTime) < 20) {
        return;
      }
      this.focusTime = 0;
    }
    this.preClickTime = 0;
    this.preTouchTime = 0;
    if (event && event.preventDefault) {
      event.preventDefault();
    }
    const nextVisible = !this.state.popupVisible;
    if (this.isClickToHide() && !nextVisible || nextVisible && this.isClickToShow()) {
      this.setPopupVisible(!this.state.popupVisible, event);
    }
  }

  onPopupMouseDown = (...args) => {
    const { rcTrigger = {} } = this.context;
    this.hasPopupMouseDown = true;

    clearTimeout(this.mouseDownTimeout);
    this.mouseDownTimeout = setTimeout(() => {
      this.hasPopupMouseDown = false;
    }, 0);

    if (rcTrigger.onPopupMouseDown) {
      rcTrigger.onPopupMouseDown(...args);
    }
  };

  onDocumentClick = (event) => {
    if (this.props.mask && !this.props.maskClosable) {
      return;
    }

    const target = event.target;
    const root = findDOMNode(this);
    if (!contains(root, target) && !this.hasPopupMouseDown) {
      this.close();
    }
  }

  getPopupDomNode() {
    // for test
    if (this._component && this._component.getPopupDomNode) {
      return this._component.getPopupDomNode();
    }
    return null;
  }

  getRootDomNode = () => {
    return findDOMNode(this);
  }

  getPopupClassNameFromAlign = (align) => {
    const className = [];
    const {
      popupPlacement, builtinPlacements, prefixCls, alignPoint,
      getPopupClassNameFromAlign,
    } = this.props;
    if (popupPlacement && builtinPlacements) {
      className.push(getAlignPopupClassName(builtinPlacements, prefixCls, align, alignPoint));
    }
    if (getPopupClassNameFromAlign) {
      className.push(getPopupClassNameFromAlign(align));
    }
    return className.join(' ');
  }

  getPopupAlign() {
    const props = this.props;
    const { popupPlacement, popupAlign, builtinPlacements } = props;
    if (popupPlacement && builtinPlacements) {
      return getAlignFromPlacement(builtinPlacements, popupPlacement, popupAlign);
    }
    return popupAlign;
  }

  getComponent = () => {
    const {
      prefixCls, destroyPopupOnHide, popupClassName, action,
      onPopupAlign, popupAnimation, popupTransitionName, popupStyle,
      mask, maskAnimation, maskTransitionName, zIndex, popup, stretch,
      alignPoint,
    } = this.props;
    const { popupVisible, point } = this.state;

    const align = this.getPopupAlign();

    const mouseProps = {};
    if (this.isMouseEnterToShow()) {
      mouseProps.onMouseEnter = this.onPopupMouseEnter;
    }
    if (this.isMouseLeaveToHide()) {
      mouseProps.onMouseLeave = this.onPopupMouseLeave;
    }

    mouseProps.onMouseDown = this.onPopupMouseDown;
    mouseProps.onTouchStart = this.onPopupMouseDown;

    return (
      <Popup
        prefixCls={prefixCls}
        destroyPopupOnHide={destroyPopupOnHide}
        visible={popupVisible}
        point={alignPoint && point}
        className={popupClassName}
        action={action}
        align={align}
        onAlign={onPopupAlign}
        animation={popupAnimation}
        getClassNameFromAlign={this.getPopupClassNameFromAlign}
        {...mouseProps}
        stretch={stretch}
        getRootDomNode={this.getRootDomNode}
        style={popupStyle}
        mask={mask}
        zIndex={zIndex}
        transitionName={popupTransitionName}
        maskAnimation={maskAnimation}
        maskTransitionName={maskTransitionName}
        ref={this.savePopup}
      >
        {typeof popup === 'function' ? popup() : popup}
      </Popup>
    );
  }

  getContainer = () => {
    const { props } = this;
    const popupContainer = document.createElement('div');
    // Make sure default popup container will never cause scrollbar appearing
    // https://github.com/react-component/trigger/issues/41
    popupContainer.style.position = 'absolute';
    popupContainer.style.top = '0';
    popupContainer.style.left = '0';
    popupContainer.style.width = '100%';
    const mountNode = props.getPopupContainer ?
      props.getPopupContainer(findDOMNode(this)) : props.getDocument().body;
    mountNode.appendChild(popupContainer);
    return popupContainer;
  }

  /**
   * @param popupVisible    Show or not the popup element
   * @param event           SyntheticEvent, used for `pointAlign`
   */
  setPopupVisible(popupVisible, event) {
    const { alignPoint } = this.props;

    this.clearDelayTimer();

    if (this.state.popupVisible !== popupVisible) {
      if (!('popupVisible' in this.props)) {
        this.setState({ popupVisible });
      }
      this.props.onPopupVisibleChange(popupVisible);
    }

    // Always record the point position since mouseEnterDelay will delay the show
    if (alignPoint && event) {
      this.setPoint(event);
    }
  }

  setPoint = (point) => {
    const { alignPoint } = this.props;
    if (!alignPoint || !point) return;

    this.setState({
      point: {
        pageX: point.pageX,
        pageY: point.pageY,
      },
    });
  }

  handlePortalUpdate = () => {
    if (this.prevPopupVisible !== this.state.popupVisible) {
      this.props.afterPopupVisibleChange(this.state.popupVisible);
    }
  }

  delaySetPopupVisible(visible, delayS, event) {
    const delay = delayS * 1000;
    this.clearDelayTimer();
    if (delay) {
      const point = event ? { pageX: event.pageX, pageY: event.pageY } : null;
      this.delayTimer = setTimeout(() => {
        this.setPopupVisible(visible, point);
        this.clearDelayTimer();
      }, delay);
    } else {
      this.setPopupVisible(visible, event);
    }
  }

  clearDelayTimer() {
    if (this.delayTimer) {
      clearTimeout(this.delayTimer);
      this.delayTimer = null;
    }
  }

  clearOutsideHandler() {
    if (this.clickOutsideHandler) {
      this.clickOutsideHandler.remove();
      this.clickOutsideHandler = null;
    }

    if (this.contextMenuOutsideHandler1) {
      this.contextMenuOutsideHandler1.remove();
      this.contextMenuOutsideHandler1 = null;
    }

    if (this.contextMenuOutsideHandler2) {
      this.contextMenuOutsideHandler2.remove();
      this.contextMenuOutsideHandler2 = null;
    }

    if (this.touchOutsideHandler) {
      this.touchOutsideHandler.remove();
      this.touchOutsideHandler = null;
    }
  }

  createTwoChains(event) {
    const childPros = this.props.children.props;
    const props = this.props;
    if (childPros[event] && props[event]) {
      return this[`fire${event}`];
    }
    return childPros[event] || props[event];
  }

  isClickToShow() {
    const { action, showAction } = this.props;
    return action.indexOf('click') !== -1 || showAction.indexOf('click') !== -1;
  }

  isContextMenuToShow() {
    const { action, showAction } = this.props;
    return action.indexOf('contextMenu') !== -1 || showAction.indexOf('contextMenu') !== -1;
  }

  isClickToHide() {
    const { action, hideAction } = this.props;
    return action.indexOf('click') !== -1 || hideAction.indexOf('click') !== -1;
  }

  isMouseEnterToShow() {
    const { action, showAction } = this.props;
    return action.indexOf('hover') !== -1 || showAction.indexOf('mouseEnter') !== -1;
  }

  isMouseLeaveToHide() {
    const { action, hideAction } = this.props;
    return action.indexOf('hover') !== -1 || hideAction.indexOf('mouseLeave') !== -1;
  }

  isFocusToShow() {
    const { action, showAction } = this.props;
    return action.indexOf('focus') !== -1 || showAction.indexOf('focus') !== -1;
  }

  isBlurToHide() {
    const { action, hideAction } = this.props;
    return action.indexOf('focus') !== -1 || hideAction.indexOf('blur') !== -1;
  }

  forcePopupAlign() {
    if (this.state.popupVisible && this._component && this._component.alignInstance) {
      this._component.alignInstance.forceAlign();
    }
  }

  fireEvents(type, e) {
    const childCallback = this.props.children.props[type];
    if (childCallback) {
      childCallback(e);
    }
    const callback = this.props[type];
    if (callback) {
      callback(e);
    }
  }

  close() {
    this.setPopupVisible(false);
  }

  savePopup = (node) => {
    this._component = node;
  }

  render() {
    const { popupVisible } = this.state;
    const { children, forceRender, alignPoint, className } = this.props;
    const child = React.Children.only(children);
    const newChildProps = { key: 'trigger' };

    if (this.isContextMenuToShow()) {
      newChildProps.onContextMenu = this.onContextMenu;
    } else {
      newChildProps.onContextMenu = this.createTwoChains('onContextMenu');
    }

    if (this.isClickToHide() || this.isClickToShow()) {
      newChildProps.onClick = this.onClick;
      newChildProps.onMouseDown = this.onMouseDown;
      newChildProps.onTouchStart = this.onTouchStart;
    } else {
      newChildProps.onClick = this.createTwoChains('onClick');
      newChildProps.onMouseDown = this.createTwoChains('onMouseDown');
      newChildProps.onTouchStart = this.createTwoChains('onTouchStart');
    }
    if (this.isMouseEnterToShow()) {
      newChildProps.onMouseEnter = this.onMouseEnter;
      if (alignPoint) {
        newChildProps.onMouseMove = this.onMouseMove;
      }
    } else {
      newChildProps.onMouseEnter = this.createTwoChains('onMouseEnter');
    }
    if (this.isMouseLeaveToHide()) {
      newChildProps.onMouseLeave = this.onMouseLeave;
    } else {
      newChildProps.onMouseLeave = this.createTwoChains('onMouseLeave');
    }
    if (this.isFocusToShow() || this.isBlurToHide()) {
      newChildProps.onFocus = this.onFocus;
      newChildProps.onBlur = this.onBlur;
    } else {
      newChildProps.onFocus = this.createTwoChains('onFocus');
      newChildProps.onBlur = this.createTwoChains('onBlur');
    }

    const childrenClassName = classNames(child && child.props && child.props.className, className);
    if (childrenClassName) {
      newChildProps.className = childrenClassName;
    }
    const trigger = React.cloneElement(child, newChildProps);

    if (!IS_REACT_16) {
      return (
        <ContainerRender
          parent={this}
          visible={popupVisible}
          autoMount={false}
          forceRender={forceRender}
          getComponent={this.getComponent}
          getContainer={this.getContainer}
        >
          {({ renderComponent }) => {
            this.renderComponent = renderComponent;
            return trigger;
          }}
        </ContainerRender>
      );
    }

    let portal;
    // prevent unmounting after it's rendered
    if (popupVisible || this._component || forceRender) {
      portal = (
        <Portal
          key="portal"
          getContainer={this.getContainer}
          didUpdate={this.handlePortalUpdate}
        >
          {this.getComponent()}
        </Portal>
      );
    }

    return [
      trigger,
      portal,
    ];
  }
}