cytoscape-react-fe-ml/lib/navigator.js

图析画布组件

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _react = _interopRequireWildcard(require("react"));

var _propTypes = _interopRequireDefault(require("prop-types"));

var _classnames = _interopRequireDefault(require("classnames"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function _getRequireWildcardCache() { return cache; }; return cache; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

var Navigator = /*#__PURE__*/_react.default.forwardRef((_ref, ref) => {
  var {
    className,
    headerClassName,
    afterDragging
  } = _ref;
  var containerRef = (0, _react.useRef)();
  var headerRef = (0, _react.useRef)();
  var dragging = false;
  var mouseDownX;
  var mouseDownY;
  var initialLeft;
  var initialTop;

  var handleMouseMove = e => {
    if (!dragging) {
      return;
    }

    var deltaX = e.pageX - mouseDownX;
    var deltaY = e.pageY - mouseDownY;
    var left = initialLeft + deltaX;
    var top = initialTop + deltaY;
    var parentWidth = containerRef.current.offsetParent.clientWidth;
    var parentHeight = containerRef.current.offsetParent.clientHeight;
    var {
      offsetWidth,
      offsetHeight
    } = containerRef.current;

    if (left + offsetWidth > parentWidth) {
      left = parentWidth - offsetWidth;
    }

    var modalBodyPadding = getComputedStyle(containerRef.current).padding || '';
    var [paddingTop,, paddingBottom] = modalBodyPadding.split(' ');
    var actualPaddingBottom = paddingBottom;

    if (!actualPaddingBottom) {
      actualPaddingBottom = paddingTop || '0px';
    }

    var height = offsetHeight - parseFloat(actualPaddingBottom);

    if (top + height > parentHeight) {
      top = parentHeight - height;
    }

    if (left < 0) {
      left = 0;
    }

    if (top < 0) {
      top = 0;
    }

    containerRef.current.style.left = "".concat(left, "px");
    containerRef.current.style.top = "".concat(top, "px");
  };

  var handleMouseUp = () => {
    var currentDragging = dragging;
    dragging = false;
    window.removeEventListener('mouseup', handleMouseUp, false);
    window.removeEventListener('mousemove', handleMouseMove, false);

    if (currentDragging && afterDragging) {
      afterDragging();
    }
  };

  var handleMouseDown = e => {
    dragging = true;
    mouseDownX = e.pageX;
    mouseDownY = e.pageY;
    initialLeft = containerRef.current.offsetLeft;
    initialTop = containerRef.current.offsetTop;
    window.addEventListener('mouseup', handleMouseUp, false);
    window.addEventListener('mousemove', handleMouseMove, false);
  };

  (0, _react.useEffect)(() => {
    headerRef.current.addEventListener('mousedown', handleMouseDown);
    return () => {
      headerRef.current.removeEventListener('mousedown', handleMouseDown);
    };
  });

  var handleDoubleClick = e => {
    e.stopPropagation();
  };

  return /*#__PURE__*/_react.default.createElement("div", {
    ref: containerRef,
    className: (0, _classnames.default)('navigator-cytoscape-ml', className),
    onDoubleClick: handleDoubleClick
  }, /*#__PURE__*/_react.default.createElement("div", {
    ref: headerRef,
    className: (0, _classnames.default)('header-navigator-cytoscape-ml', headerClassName)
  }, "\u5BFC\u822A\u5668"), /*#__PURE__*/_react.default.createElement("div", {
    className: "cytoscape-navigator",
    role: "presentation",
    ref: ref
  }));
});

Navigator.defaultProps = {
  className: '',
  headerClassName: '',
  afterDragging: null
};
Navigator.propTypes = {
  className: _propTypes.default.string,
  headerClassName: _propTypes.default.string,
  afterDragging: _propTypes.default.func
};
var _default = Navigator;
exports.default = _default;