rc-mentions/es/Mentions.js

import _extends from "@babel/runtime/helpers/esm/extends";
import _objectWithoutProperties from "@babel/runtime/helpers/esm/objectWithoutProperties";
import _objectSpread from "@babel/runtime/helpers/esm/objectSpread2";
import _classCallCheck from "@babel/runtime/helpers/esm/classCallCheck";
import _createClass from "@babel/runtime/helpers/esm/createClass";
import _inherits from "@babel/runtime/helpers/esm/inherits";
import _createSuper from "@babel/runtime/helpers/esm/createSuper";
import classNames from 'classnames';
import toArray from "rc-util/es/Children/toArray";
import KeyCode from "rc-util/es/KeyCode";
import * as React from 'react';
import TextArea from 'rc-textarea';
import KeywordTrigger from './KeywordTrigger';
import { MentionsContextProvider } from './MentionsContext';
import Option from './Option';
import { filterOption as defaultFilterOption, getBeforeSelectionText, getLastMeasureIndex, omit, replaceWithMeasure, setInputSelection, validateSearch as defaultValidateSearch } from './util';

var Mentions = /*#__PURE__*/function (_React$Component) {
  _inherits(Mentions, _React$Component);

  var _super = _createSuper(Mentions);

  function Mentions(props) {
    var _this;

    _classCallCheck(this, Mentions);

    _this = _super.call(this, props);
    _this.focusId = undefined;

    _this.triggerChange = function (value) {
      var onChange = _this.props.onChange;

      if (!('value' in _this.props)) {
        _this.setState({
          value: value
        });
      }

      if (onChange) {
        onChange(value);
      }
    };

    _this.onChange = function (_ref) {
      var value = _ref.target.value;

      _this.triggerChange(value);
    }; // Check if hit the measure keyword


    _this.onKeyDown = function (event) {
      var which = event.which;
      var _this$state = _this.state,
          activeIndex = _this$state.activeIndex,
          measuring = _this$state.measuring; // Skip if not measuring

      if (!measuring) {
        return;
      }

      if (which === KeyCode.UP || which === KeyCode.DOWN) {
        // Control arrow function
        var optionLen = _this.getOptions().length;

        var offset = which === KeyCode.UP ? -1 : 1;
        var newActiveIndex = (activeIndex + offset + optionLen) % optionLen;

        _this.setState({
          activeIndex: newActiveIndex
        });

        event.preventDefault();
      } else if (which === KeyCode.ESC) {
        _this.stopMeasure();
      } else if (which === KeyCode.ENTER) {
        // Measure hit
        event.preventDefault();

        var options = _this.getOptions();

        if (!options.length) {
          _this.stopMeasure();

          return;
        }

        var option = options[activeIndex];

        _this.selectOption(option);
      }
    };
    /**
     * When to start measure:
     * 1. When user press `prefix`
     * 2. When measureText !== prevMeasureText
     *  - If measure hit
     *  - If measuring
     *
     * When to stop measure:
     * 1. Selection is out of range
     * 2. Contains `space`
     * 3. ESC or select one
     */


    _this.onKeyUp = function (event) {
      var key = event.key,
          which = event.which;
      var _this$state2 = _this.state,
          prevMeasureText = _this$state2.measureText,
          measuring = _this$state2.measuring;
      var _this$props = _this.props,
          _this$props$prefix = _this$props.prefix,
          prefix = _this$props$prefix === void 0 ? '' : _this$props$prefix,
          onSearch = _this$props.onSearch,
          validateSearch = _this$props.validateSearch;
      var target = event.target;
      var selectionStartText = getBeforeSelectionText(target);

      var _getLastMeasureIndex = getLastMeasureIndex(selectionStartText, prefix),
          measureIndex = _getLastMeasureIndex.location,
          measurePrefix = _getLastMeasureIndex.prefix; // Skip if match the white key list


      if ([KeyCode.ESC, KeyCode.UP, KeyCode.DOWN, KeyCode.ENTER].indexOf(which) !== -1) {
        return;
      }

      if (measureIndex !== -1) {
        var measureText = selectionStartText.slice(measureIndex + measurePrefix.length);
        var validateMeasure = validateSearch(measureText, _this.props);
        var matchOption = !!_this.getOptions(measureText).length;

        if (validateMeasure) {
          if (key === measurePrefix || key === 'Shift' || measuring || measureText !== prevMeasureText && matchOption) {
            _this.startMeasure(measureText, measurePrefix, measureIndex);
          }
        } else if (measuring) {
          // Stop if measureText is invalidate
          _this.stopMeasure();
        }
        /**
         * We will trigger `onSearch` to developer since they may use for async update.
         * If met `space` means user finished searching.
         */


        if (onSearch && validateMeasure) {
          onSearch(measureText, measurePrefix);
        }
      } else if (measuring) {
        _this.stopMeasure();
      }
    };

    _this.onPressEnter = function (event) {
      var measuring = _this.state.measuring;
      var onPressEnter = _this.props.onPressEnter;

      if (!measuring && onPressEnter) {
        onPressEnter(event);
      }
    };

    _this.onInputFocus = function (event) {
      _this.onFocus(event);
    };

    _this.onInputBlur = function (event) {
      _this.onBlur(event);
    };

    _this.onDropdownFocus = function () {
      _this.onFocus();
    };

    _this.onDropdownBlur = function () {
      _this.onBlur();
    };

    _this.onFocus = function (event) {
      window.clearTimeout(_this.focusId);
      var isFocus = _this.state.isFocus;
      var onFocus = _this.props.onFocus;

      if (!isFocus && event && onFocus) {
        onFocus(event);
      }

      _this.setState({
        isFocus: true
      });
    };

    _this.onBlur = function (event) {
      _this.focusId = window.setTimeout(function () {
        var onBlur = _this.props.onBlur;

        _this.setState({
          isFocus: false
        });

        _this.stopMeasure();

        if (onBlur) {
          onBlur(event);
        }
      }, 0);
    };

    _this.selectOption = function (option) {
      var _this$state3 = _this.state,
          value = _this$state3.value,
          measureLocation = _this$state3.measureLocation,
          measurePrefix = _this$state3.measurePrefix;
      var _this$props2 = _this.props,
          split = _this$props2.split,
          onSelect = _this$props2.onSelect;
      var _option$value = option.value,
          mentionValue = _option$value === void 0 ? '' : _option$value;

      var _replaceWithMeasure = replaceWithMeasure(value, {
        measureLocation: measureLocation,
        targetText: mentionValue,
        prefix: measurePrefix,
        selectionStart: _this.textarea.selectionStart,
        split: split
      }),
          text = _replaceWithMeasure.text,
          selectionLocation = _replaceWithMeasure.selectionLocation;

      _this.triggerChange(text);

      _this.stopMeasure(function () {
        // We need restore the selection position
        setInputSelection(_this.textarea, selectionLocation);
      });

      if (onSelect) {
        onSelect(option, measurePrefix);
      }
    };

    _this.setActiveIndex = function (activeIndex) {
      _this.setState({
        activeIndex: activeIndex
      });
    };

    _this.setTextAreaRef = function (element) {
      var _element$resizableTex;

      _this.textarea = element === null || element === void 0 ? void 0 : (_element$resizableTex = element.resizableTextArea) === null || _element$resizableTex === void 0 ? void 0 : _element$resizableTex.textArea;
    };

    _this.setMeasureRef = function (element) {
      _this.measure = element;
    };

    _this.getOptions = function (measureText) {
      var targetMeasureText = measureText || _this.state.measureText || '';
      var _this$props3 = _this.props,
          children = _this$props3.children,
          filterOption = _this$props3.filterOption;
      var list = toArray(children).map(function (_ref2) {
        var props = _ref2.props,
            key = _ref2.key;
        return _objectSpread(_objectSpread({}, props), {}, {
          key: key || props.value
        });
      }).filter(function (option) {
        /** Return all result if `filterOption` is false. */
        if (filterOption === false) {
          return true;
        }

        return filterOption(targetMeasureText, option);
      });
      return list;
    };

    _this.state = {
      value: props.defaultValue || props.value || '',
      measuring: false,
      measureLocation: 0,
      measureText: null,
      measurePrefix: '',
      activeIndex: 0,
      isFocus: false
    };
    return _this;
  }

  _createClass(Mentions, [{
    key: "componentDidUpdate",
    value: function componentDidUpdate() {
      var measuring = this.state.measuring; // Sync measure div top with textarea for rc-trigger usage

      if (measuring) {
        this.measure.scrollTop = this.textarea.scrollTop;
      }
    }
  }, {
    key: "startMeasure",
    value: function startMeasure(measureText, measurePrefix, measureLocation) {
      this.setState({
        measuring: true,
        measureText: measureText,
        measurePrefix: measurePrefix,
        measureLocation: measureLocation,
        activeIndex: 0
      });
    }
  }, {
    key: "stopMeasure",
    value: function stopMeasure(callback) {
      this.setState({
        measuring: false,
        measureLocation: 0,
        measureText: null
      }, callback);
    }
  }, {
    key: "focus",
    value: function focus() {
      this.textarea.focus();
    }
  }, {
    key: "blur",
    value: function blur() {
      this.textarea.blur();
    }
  }, {
    key: "render",
    value: function render() {
      var _this$state4 = this.state,
          value = _this$state4.value,
          measureLocation = _this$state4.measureLocation,
          measurePrefix = _this$state4.measurePrefix,
          measuring = _this$state4.measuring,
          activeIndex = _this$state4.activeIndex;

      var _this$props4 = this.props,
          prefixCls = _this$props4.prefixCls,
          placement = _this$props4.placement,
          direction = _this$props4.direction,
          transitionName = _this$props4.transitionName,
          className = _this$props4.className,
          style = _this$props4.style,
          autoFocus = _this$props4.autoFocus,
          notFoundContent = _this$props4.notFoundContent,
          getPopupContainer = _this$props4.getPopupContainer,
          restProps = _objectWithoutProperties(_this$props4, ["prefixCls", "placement", "direction", "transitionName", "className", "style", "autoFocus", "notFoundContent", "getPopupContainer"]);

      var inputProps = omit(restProps, 'value', 'defaultValue', 'prefix', 'split', 'children', 'validateSearch', 'filterOption', 'onSelect', 'onSearch');
      var options = measuring ? this.getOptions() : [];
      return /*#__PURE__*/React.createElement("div", {
        className: classNames(prefixCls, className),
        style: style
      }, /*#__PURE__*/React.createElement(TextArea, _extends({
        autoFocus: autoFocus,
        ref: this.setTextAreaRef,
        value: value
      }, inputProps, {
        onChange: this.onChange,
        onKeyDown: this.onKeyDown,
        onKeyUp: this.onKeyUp,
        onPressEnter: this.onPressEnter,
        onFocus: this.onInputFocus,
        onBlur: this.onInputBlur
      })), measuring && /*#__PURE__*/React.createElement("div", {
        ref: this.setMeasureRef,
        className: "".concat(prefixCls, "-measure")
      }, value.slice(0, measureLocation), /*#__PURE__*/React.createElement(MentionsContextProvider, {
        value: {
          notFoundContent: notFoundContent,
          activeIndex: activeIndex,
          setActiveIndex: this.setActiveIndex,
          selectOption: this.selectOption,
          onFocus: this.onDropdownFocus,
          onBlur: this.onDropdownBlur
        }
      }, /*#__PURE__*/React.createElement(KeywordTrigger, {
        prefixCls: prefixCls,
        transitionName: transitionName,
        placement: placement,
        direction: direction,
        options: options,
        visible: true,
        getPopupContainer: getPopupContainer
      }, /*#__PURE__*/React.createElement("span", null, measurePrefix))), value.slice(measureLocation + measurePrefix.length)));
    }
  }], [{
    key: "getDerivedStateFromProps",
    value: function getDerivedStateFromProps(props, prevState) {
      var newState = {};

      if ('value' in props && props.value !== prevState.value) {
        newState.value = props.value || '';
      }

      return newState;
    }
  }]);

  return Mentions;
}(React.Component);

Mentions.Option = Option;
Mentions.defaultProps = {
  prefixCls: 'rc-mentions',
  prefix: '@',
  split: ' ',
  validateSearch: defaultValidateSearch,
  filterOption: defaultFilterOption,
  notFoundContent: 'Not Found',
  rows: 1
};
export default Mentions;