react-mosaic-component2/Split.cjs

A React Tiling Window Manager

"use strict";
var __create = Object.create;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __getProtoOf = Object.getPrototypeOf;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
  for (var name in all)
    __defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
  if (from && typeof from === "object" || typeof from === "function") {
    for (let key of __getOwnPropNames(from))
      if (!__hasOwnProp.call(to, key) && key !== except)
        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
  }
  return to;
};
var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
  // If the importer is in node compatibility mode or this is not an ESM
  // file that has been converted to a CommonJS file using a Babel-
  // compatible transform (i.e. "__esModule" has not been set), then set
  // "default" to the CommonJS "module.exports" for node compatibility.
  isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: true }) : target,
  mod
));
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);

// src/Split.tsx
var Split_exports = {};
__export(Split_exports, {
  Split: () => Split
});
module.exports = __toCommonJS(Split_exports);
var import_classnames = __toESM(require("classnames"), 1);
var import_lodash_es = require("lodash-es");
var import_lodash_es2 = require("lodash-es");
var import_react = __toESM(require("react"), 1);
var import_BoundingBox = require("./util/BoundingBox.cjs");
var RESIZE_THROTTLE_MS = 1e3 / 30;
var TOUCH_EVENT_OPTIONS = {
  capture: true,
  passive: false
};
var Split = class extends import_react.default.PureComponent {
  rootElement = import_react.default.createRef();
  listenersBound = false;
  static defaultProps = {
    onChange: () => void 0,
    onRelease: () => void 0,
    minimumPaneSizePercentage: 20
  };
  render() {
    const { direction } = this.props;
    return /* @__PURE__ */ import_react.default.createElement(
      "div",
      {
        className: (0, import_classnames.default)("mosaic-split", {
          "-row": direction === "row",
          "-column": direction === "column"
        }),
        ref: this.rootElement,
        onMouseDown: this.onMouseDown,
        style: this.computeStyle()
      },
      /* @__PURE__ */ import_react.default.createElement("div", { className: "mosaic-split-line" })
    );
  }
  componentDidMount() {
    this.rootElement.current.addEventListener("touchstart", this.onMouseDown, TOUCH_EVENT_OPTIONS);
  }
  componentWillUnmount() {
    this.unbindListeners();
    if (this.rootElement.current) {
      this.rootElement.current.ownerDocument.removeEventListener("touchstart", this.onMouseDown, TOUCH_EVENT_OPTIONS);
    }
  }
  bindListeners() {
    if (!this.listenersBound) {
      this.rootElement.current.ownerDocument.addEventListener("mousemove", this.onMouseMove, true);
      this.rootElement.current.ownerDocument.addEventListener("touchmove", this.onMouseMove, TOUCH_EVENT_OPTIONS);
      this.rootElement.current.ownerDocument.addEventListener("mouseup", this.onMouseUp, true);
      this.rootElement.current.ownerDocument.addEventListener("touchend", this.onMouseUp, true);
      this.listenersBound = true;
    }
  }
  unbindListeners() {
    if (this.rootElement.current) {
      this.rootElement.current.ownerDocument.removeEventListener("mousemove", this.onMouseMove, true);
      this.rootElement.current.ownerDocument.removeEventListener("touchmove", this.onMouseMove, TOUCH_EVENT_OPTIONS);
      this.rootElement.current.ownerDocument.removeEventListener("mouseup", this.onMouseUp, true);
      this.rootElement.current.ownerDocument.removeEventListener("touchend", this.onMouseUp, true);
      this.listenersBound = false;
    }
  }
  computeStyle() {
    const { boundingBox, direction, splitPercentage } = this.props;
    const positionStyle = direction === "column" ? "top" : "left";
    const absolutePercentage = import_BoundingBox.BoundingBox.getAbsoluteSplitPercentage(boundingBox, splitPercentage, direction);
    return {
      ...import_BoundingBox.BoundingBox.asStyles(boundingBox),
      [positionStyle]: `${absolutePercentage}%`
    };
  }
  onMouseDown = (event) => {
    if (!isTouchEvent(event)) {
      if (event.button !== 0) {
        return;
      }
    }
    event.preventDefault();
    this.bindListeners();
  };
  onMouseUp = (event) => {
    this.unbindListeners();
    const percentage = this.calculateRelativePercentage(event);
    this.props.onRelease(percentage);
  };
  onMouseMove = (event) => {
    event.preventDefault();
    this.throttledUpdatePercentage(event);
  };
  throttledUpdatePercentage = (0, import_lodash_es2.throttle)((event) => {
    const percentage = this.calculateRelativePercentage(event);
    if (percentage !== this.props.splitPercentage) {
      this.props.onChange(percentage);
    }
  }, RESIZE_THROTTLE_MS);
  calculateRelativePercentage(event) {
    const { minimumPaneSizePercentage, direction, boundingBox } = this.props;
    const parentBBox = this.rootElement.current.parentElement.getBoundingClientRect();
    const location = isTouchEvent(event) ? event.changedTouches[0] : event;
    let absolutePercentage;
    if (direction === "column") {
      absolutePercentage = (location.clientY - parentBBox.top) / parentBBox.height * 100;
    } else {
      absolutePercentage = (location.clientX - parentBBox.left) / parentBBox.width * 100;
    }
    const relativePercentage = import_BoundingBox.BoundingBox.getRelativeSplitPercentage(boundingBox, absolutePercentage, direction);
    return (0, import_lodash_es.clamp)(relativePercentage, minimumPaneSizePercentage, 100 - minimumPaneSizePercentage);
  }
};
function isTouchEvent(event) {
  return event.changedTouches != null;
}