mind.svg.js/.dist/mind.svg.js

Display and operate MindMap using SVG in browser

/**
 * mind.svg.js
 * @summary     Display and operate MindMap using SVG in browser
 * @version     0.6.8
 * @copyright   season studio
 * @license     MIT
 * @time        Tue Jul 07 2020 17:07:29 GMT+0800 (GMT+08:00)
 */

function createCommonjsModule(fn, module) {
	return module = { exports: {} }, fn(module, module.exports), module.exports;
}

var runtime_1 = createCommonjsModule(function (module) {
/**
 * Copyright (c) 2014-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

var runtime = (function (exports) {

  var Op = Object.prototype;
  var hasOwn = Op.hasOwnProperty;
  var undefined$1; // More compressible than void 0.
  var $Symbol = typeof Symbol === "function" ? Symbol : {};
  var iteratorSymbol = $Symbol.iterator || "@@iterator";
  var asyncIteratorSymbol = $Symbol.asyncIterator || "@@asyncIterator";
  var toStringTagSymbol = $Symbol.toStringTag || "@@toStringTag";

  function wrap(innerFn, outerFn, self, tryLocsList) {
    // If outerFn provided and outerFn.prototype is a Generator, then outerFn.prototype instanceof Generator.
    var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator;
    var generator = Object.create(protoGenerator.prototype);
    var context = new Context(tryLocsList || []);

    // The ._invoke method unifies the implementations of the .next,
    // .throw, and .return methods.
    generator._invoke = makeInvokeMethod(innerFn, self, context);

    return generator;
  }
  exports.wrap = wrap;

  // Try/catch helper to minimize deoptimizations. Returns a completion
  // record like context.tryEntries[i].completion. This interface could
  // have been (and was previously) designed to take a closure to be
  // invoked without arguments, but in all the cases we care about we
  // already have an existing method we want to call, so there's no need
  // to create a new function object. We can even get away with assuming
  // the method takes exactly one argument, since that happens to be true
  // in every case, so we don't have to touch the arguments object. The
  // only additional allocation required is the completion record, which
  // has a stable shape and so hopefully should be cheap to allocate.
  function tryCatch(fn, obj, arg) {
    try {
      return { type: "normal", arg: fn.call(obj, arg) };
    } catch (err) {
      return { type: "throw", arg: err };
    }
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  var GenStateSuspendedStart = "suspendedStart";
  var GenStateSuspendedYield = "suspendedYield";
  var GenStateExecuting = "executing";
  var GenStateCompleted = "completed";

  // Returning this object from the innerFn has the same effect as
  // breaking out of the dispatch switch statement.
  var ContinueSentinel = {};

  // Dummy constructor functions that we use as the .constructor and
  // .constructor.prototype properties for functions that return Generator
  // objects. For full spec compliance, you may wish to configure your
  // minifier not to mangle the names of these two functions.
  function Generator() {}
  function GeneratorFunction() {}
  function GeneratorFunctionPrototype() {}

  // This is a polyfill for %IteratorPrototype% for environments that
  // don't natively support it.
  var IteratorPrototype = {};
  IteratorPrototype[iteratorSymbol] = function () {
    return this;
  };

  var getProto = Object.getPrototypeOf;
  var NativeIteratorPrototype = getProto && getProto(getProto(values([])));
  if (NativeIteratorPrototype &&
      NativeIteratorPrototype !== Op &&
      hasOwn.call(NativeIteratorPrototype, iteratorSymbol)) {
    // This environment has a native %IteratorPrototype%; use it instead
    // of the polyfill.
    IteratorPrototype = NativeIteratorPrototype;
  }

  var Gp = GeneratorFunctionPrototype.prototype =
    Generator.prototype = Object.create(IteratorPrototype);
  GeneratorFunction.prototype = Gp.constructor = GeneratorFunctionPrototype;
  GeneratorFunctionPrototype.constructor = GeneratorFunction;
  GeneratorFunctionPrototype[toStringTagSymbol] =
    GeneratorFunction.displayName = "GeneratorFunction";

  // Helper for defining the .next, .throw, and .return methods of the
  // Iterator interface in terms of a single ._invoke method.
  function defineIteratorMethods(prototype) {
    ["next", "throw", "return"].forEach(function(method) {
      prototype[method] = function(arg) {
        return this._invoke(method, arg);
      };
    });
  }

  exports.isGeneratorFunction = function(genFun) {
    var ctor = typeof genFun === "function" && genFun.constructor;
    return ctor
      ? ctor === GeneratorFunction ||
        // For the native GeneratorFunction constructor, the best we can
        // do is to check its .name property.
        (ctor.displayName || ctor.name) === "GeneratorFunction"
      : false;
  };

  exports.mark = function(genFun) {
    if (Object.setPrototypeOf) {
      Object.setPrototypeOf(genFun, GeneratorFunctionPrototype);
    } else {
      genFun.__proto__ = GeneratorFunctionPrototype;
      if (!(toStringTagSymbol in genFun)) {
        genFun[toStringTagSymbol] = "GeneratorFunction";
      }
    }
    genFun.prototype = Object.create(Gp);
    return genFun;
  };

  // Within the body of any async function, `await x` is transformed to
  // `yield regeneratorRuntime.awrap(x)`, so that the runtime can test
  // `hasOwn.call(value, "__await")` to determine if the yielded value is
  // meant to be awaited.
  exports.awrap = function(arg) {
    return { __await: arg };
  };

  function AsyncIterator(generator, PromiseImpl) {
    function invoke(method, arg, resolve, reject) {
      var record = tryCatch(generator[method], generator, arg);
      if (record.type === "throw") {
        reject(record.arg);
      } else {
        var result = record.arg;
        var value = result.value;
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            invoke("throw", err, resolve, reject);
          });
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        return PromiseImpl.resolve(value).then(function(unwrapped) {
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          resolve(result);
        }, function(error) {
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      }
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    var previousPromise;

    function enqueue(method, arg) {
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      return previousPromise =
        // If enqueue has been called before, then we want to wait until
        // all previous Promises have been resolved before calling invoke,
        // so that results are always delivered in the correct order. If
        // enqueue has not been called before, then it is important to
        // call invoke immediately, without waiting on a callback to fire,
        // so that the async generator function has the opportunity to do
        // any necessary setup in a predictable way. This predictability
        // is why the Promise constructor synchronously invokes its
        // executor callback, and why async functions synchronously
        // execute code before the first await. Since we implement simple
        // async functions in terms of async generators, it is especially
        // important to get this right, even though it requires care.
        previousPromise ? previousPromise.then(
          callInvokeWithMethodAndArg,
          // Avoid propagating failures to Promises returned by later
          // invocations of the iterator.
          callInvokeWithMethodAndArg
        ) : callInvokeWithMethodAndArg();
    }

    // Define the unified helper method that is used to implement .next,
    // .throw, and .return (see defineIteratorMethods).
    this._invoke = enqueue;
  }

  defineIteratorMethods(AsyncIterator.prototype);
  AsyncIterator.prototype[asyncIteratorSymbol] = function () {
    return this;
  };
  exports.AsyncIterator = AsyncIterator;

  // Note that simple async functions are implemented on top of
  // AsyncIterator objects; they just return a Promise for the value of
  // the final result produced by the iterator.
  exports.async = function(innerFn, outerFn, self, tryLocsList, PromiseImpl) {
    if (PromiseImpl === void 0) PromiseImpl = Promise;

    var iter = new AsyncIterator(
      wrap(innerFn, outerFn, self, tryLocsList),
      PromiseImpl
    );

    return exports.isGeneratorFunction(outerFn)
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      : iter.next().then(function(result) {
          return result.done ? result.value : iter.next();
        });
  };

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      if (state === GenStateCompleted) {
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          throw arg;
        }

        // Be forgiving, per 25.3.3.3.3 of the spec:
        // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-generatorresume
        return doneResult();
      }

      context.method = method;
      context.arg = arg;

      while (true) {
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          if (delegateResult) {
            if (delegateResult === ContinueSentinel) continue;
            return delegateResult;
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        state = GenStateExecuting;

        var record = tryCatch(innerFn, self, context);
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          state = context.done
            ? GenStateCompleted
            : GenStateSuspendedYield;

          if (record.arg === ContinueSentinel) {
            continue;
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          return {
            value: record.arg,
            done: context.done
          };

        } else if (record.type === "throw") {
          state = GenStateCompleted;
          // Dispatch the exception by looping back around to the
          // context.dispatchException(context.arg) call above.
          context.method = "throw";
          context.arg = record.arg;
        }
      }
    };
  }

  // Call delegate.iterator[context.method](context.arg) and handle the
  // result, either by returning a { value, done } result from the
  // delegate iterator, or by modifying context.method and context.arg,
  // setting context.delegate to null, and returning the ContinueSentinel.
  function maybeInvokeDelegate(delegate, context) {
    var method = delegate.iterator[context.method];
    if (method === undefined$1) {
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      // method always terminates the yield* loop.
      context.delegate = null;

      if (context.method === "throw") {
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        if (delegate.iterator["return"]) {
          // If the delegate iterator has a return method, give it a
          // chance to clean up.
          context.method = "return";
          context.arg = undefined$1;
          maybeInvokeDelegate(delegate, context);

          if (context.method === "throw") {
            // If maybeInvokeDelegate(context) changed context.method from
            // "return" to "throw", let that override the TypeError below.
            return ContinueSentinel;
          }
        }

        context.method = "throw";
        context.arg = new TypeError(
          "The iterator does not provide a 'throw' method");
      }

      return ContinueSentinel;
    }

    var record = tryCatch(method, delegate.iterator, context.arg);

    if (record.type === "throw") {
      context.method = "throw";
      context.arg = record.arg;
      context.delegate = null;
      return ContinueSentinel;
    }

    var info = record.arg;

    if (! info) {
      context.method = "throw";
      context.arg = new TypeError("iterator result is not an object");
      context.delegate = null;
      return ContinueSentinel;
    }

    if (info.done) {
      // Assign the result of the finished delegate to the temporary
      // variable specified by delegate.resultName (see delegateYield).
      context[delegate.resultName] = info.value;

      // Resume execution at the desired location (see delegateYield).
      context.next = delegate.nextLoc;

      // If context.method was "throw" but the delegate handled the
      // exception, let the outer generator proceed normally. If
      // context.method was "next", forget context.arg since it has been
      // "consumed" by the delegate iterator. If context.method was
      // "return", allow the original .return call to continue in the
      // outer generator.
      if (context.method !== "return") {
        context.method = "next";
        context.arg = undefined$1;
      }

    } else {
      // Re-yield the result returned by the delegate method.
      return info;
    }

    // The delegate iterator is finished, so forget it and continue with
    // the outer generator.
    context.delegate = null;
    return ContinueSentinel;
  }

  // Define Generator.prototype.{next,throw,return} in terms of the
  // unified ._invoke helper method.
  defineIteratorMethods(Gp);

  Gp[toStringTagSymbol] = "Generator";

  // A Generator should always return itself as the iterator object when the
  // @@iterator function is called on it. Some browsers' implementations of the
  // iterator prototype chain incorrectly implement this, causing the Generator
  // object to not be returned from this call. This ensures that doesn't happen.
  // See https://github.com/facebook/regenerator/issues/274 for more details.
  Gp[iteratorSymbol] = function() {
    return this;
  };

  Gp.toString = function() {
    return "[object Generator]";
  };

  function pushTryEntry(locs) {
    var entry = { tryLoc: locs[0] };

    if (1 in locs) {
      entry.catchLoc = locs[1];
    }

    if (2 in locs) {
      entry.finallyLoc = locs[2];
      entry.afterLoc = locs[3];
    }

    this.tryEntries.push(entry);
  }

  function resetTryEntry(entry) {
    var record = entry.completion || {};
    record.type = "normal";
    delete record.arg;
    entry.completion = record;
  }

  function Context(tryLocsList) {
    // The root entry object (effectively a try statement without a catch
    // or a finally block) gives us a place to store values thrown from
    // locations where there is no enclosing try statement.
    this.tryEntries = [{ tryLoc: "root" }];
    tryLocsList.forEach(pushTryEntry, this);
    this.reset(true);
  }

  exports.keys = function(object) {
    var keys = [];
    for (var key in object) {
      keys.push(key);
    }
    keys.reverse();

    // Rather than returning an object with a next method, we keep
    // things simple and return the next function itself.
    return function next() {
      while (keys.length) {
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        if (key in object) {
          next.value = key;
          next.done = false;
          return next;
        }
      }

      // To avoid creating an additional object, we just hang the .value
      // and .done properties off the next function object itself. This
      // also ensures that the minifier will not anonymize the function.
      next.done = true;
      return next;
    };
  };

  function values(iterable) {
    if (iterable) {
      var iteratorMethod = iterable[iteratorSymbol];
      if (iteratorMethod) {
        return iteratorMethod.call(iterable);
      }

      if (typeof iterable.next === "function") {
        return iterable;
      }

      if (!isNaN(iterable.length)) {
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          while (++i < iterable.length) {
            if (hasOwn.call(iterable, i)) {
              next.value = iterable[i];
              next.done = false;
              return next;
            }
          }

          next.value = undefined$1;
          next.done = true;

          return next;
        };

        return next.next = next;
      }
    }

    // Return an iterator with no values.
    return { next: doneResult };
  }
  exports.values = values;

  function doneResult() {
    return { value: undefined$1, done: true };
  }

  Context.prototype = {
    constructor: Context,

    reset: function(skipTempReset) {
      this.prev = 0;
      this.next = 0;
      // Resetting context._sent for legacy support of Babel's
      // function.sent implementation.
      this.sent = this._sent = undefined$1;
      this.done = false;
      this.delegate = null;

      this.method = "next";
      this.arg = undefined$1;

      this.tryEntries.forEach(resetTryEntry);

      if (!skipTempReset) {
        for (var name in this) {
          // Not sure about the optimal order of these conditions:
          if (name.charAt(0) === "t" &&
              hasOwn.call(this, name) &&
              !isNaN(+name.slice(1))) {
            this[name] = undefined$1;
          }
        }
      }
    },

    stop: function() {
      this.done = true;

      var rootEntry = this.tryEntries[0];
      var rootRecord = rootEntry.completion;
      if (rootRecord.type === "throw") {
        throw rootRecord.arg;
      }

      return this.rval;
    },

    dispatchException: function(exception) {
      if (this.done) {
        throw exception;
      }

      var context = this;
      function handle(loc, caught) {
        record.type = "throw";
        record.arg = exception;
        context.next = loc;

        if (caught) {
          // If the dispatched exception was caught by a catch block,
          // then let that catch block handle the exception normally.
          context.method = "next";
          context.arg = undefined$1;
        }

        return !! caught;
      }

      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i];
        var record = entry.completion;

        if (entry.tryLoc === "root") {
          // Exception thrown outside of any try block that could handle
          // it, so set the completion value of the entire function to
          // throw the exception.
          return handle("end");
        }

        if (entry.tryLoc <= this.prev) {
          var hasCatch = hasOwn.call(entry, "catchLoc");
          var hasFinally = hasOwn.call(entry, "finallyLoc");

          if (hasCatch && hasFinally) {
            if (this.prev < entry.catchLoc) {
              return handle(entry.catchLoc, true);
            } else if (this.prev < entry.finallyLoc) {
              return handle(entry.finallyLoc);
            }

          } else if (hasCatch) {
            if (this.prev < entry.catchLoc) {
              return handle(entry.catchLoc, true);
            }

          } else if (hasFinally) {
            if (this.prev < entry.finallyLoc) {
              return handle(entry.finallyLoc);
            }

          } else {
            throw new Error("try statement without catch or finally");
          }
        }
      }
    },

    abrupt: function(type, arg) {
      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i];
        if (entry.tryLoc <= this.prev &&
            hasOwn.call(entry, "finallyLoc") &&
            this.prev < entry.finallyLoc) {
          var finallyEntry = entry;
          break;
        }
      }

      if (finallyEntry &&
          (type === "break" ||
           type === "continue") &&
          finallyEntry.tryLoc <= arg &&
          arg <= finallyEntry.finallyLoc) {
        // Ignore the finally entry if control is not jumping to a
        // location outside the try/catch block.
        finallyEntry = null;
      }

      var record = finallyEntry ? finallyEntry.completion : {};
      record.type = type;
      record.arg = arg;

      if (finallyEntry) {
        this.method = "next";
        this.next = finallyEntry.finallyLoc;
        return ContinueSentinel;
      }

      return this.complete(record);
    },

    complete: function(record, afterLoc) {
      if (record.type === "throw") {
        throw record.arg;
      }

      if (record.type === "break" ||
          record.type === "continue") {
        this.next = record.arg;
      } else if (record.type === "return") {
        this.rval = this.arg = record.arg;
        this.method = "return";
        this.next = "end";
      } else if (record.type === "normal" && afterLoc) {
        this.next = afterLoc;
      }

      return ContinueSentinel;
    },

    finish: function(finallyLoc) {
      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i];
        if (entry.finallyLoc === finallyLoc) {
          this.complete(entry.completion, entry.afterLoc);
          resetTryEntry(entry);
          return ContinueSentinel;
        }
      }
    },

    "catch": function(tryLoc) {
      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i];
        if (entry.tryLoc === tryLoc) {
          var record = entry.completion;
          if (record.type === "throw") {
            var thrown = record.arg;
            resetTryEntry(entry);
          }
          return thrown;
        }
      }

      // The context.catch method must only be called with a location
      // argument that corresponds to a known catch block.
      throw new Error("illegal catch attempt");
    },

    delegateYield: function(iterable, resultName, nextLoc) {
      this.delegate = {
        iterator: values(iterable),
        resultName: resultName,
        nextLoc: nextLoc
      };

      if (this.method === "next") {
        // Deliberately forget the last sent value so that we don't
        // accidentally pass it on to the delegate.
        this.arg = undefined$1;
      }

      return ContinueSentinel;
    }
  };

  // Regardless of whether this script is executing as a CommonJS module
  // or not, return the runtime object so that we can declare the variable
  // regeneratorRuntime in the outer scope, which allows this module to be
  // injected easily by `bin/regenerator --include-runtime script.js`.
  return exports;

}(
  // If this script is executing as a CommonJS module, use module.exports
  // as the regeneratorRuntime namespace. Otherwise create a new empty
  // object. Either way, the resulting object will be used to initialize
  // the regeneratorRuntime variable at the top of this file.
   module.exports 
));

try {
  regeneratorRuntime = runtime;
} catch (accidentalStrictMode) {
  // This module should not be running in strict mode, so the above
  // assignment should always work unless something is misconfigured. Just
  // in case runtime.js accidentally runs in strict mode, we can escape
  // strict mode using a global Function call. This could conceivably fail
  // if a Content Security Policy forbids using Function, but in that case
  // the proper solution is to fix the accidental strict mode problem. If
  // you've misconfigured your bundler to force strict mode and applied a
  // CSP to forbid Function, and you're not willing to fix either of those
  // problems, please detail your unique predicament in a GitHub issue.
  Function("r", "regeneratorRuntime = r")(runtime);
}
});

var regenerator = runtime_1;

function _classCallCheck(instance, Constructor) {
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    throw new TypeError("Cannot call a class as a function");
  }
}

function _defineProperties(target, props) {
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}

function _createClass(Constructor, protoProps, staticProps) {
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}

function _createForOfIteratorHelper(o, allowArrayLike) { var it; if (typeof Symbol === "undefined" || o[Symbol.iterator] == null) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = o[Symbol.iterator](); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it["return"] != null) it["return"](); } finally { if (didErr) throw err; } } }; }

function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

/**
 * 定义常用名称空间常量
 */
var NS = {
  SVG: "http://www.w3.org/2000/svg",
  XLINK: "http://www.w3.org/1999/xlink"
};
/**
 * 将名称转化为属性数据名称
 * @param {*} _name 
 */

function namedData(_name) {
  return "data-".concat(_name);
}
/**
 * 检查参数是不是一个DOM节点
 * @param {*} _node 
 */


function isNode(_node) {
  return _node instanceof window.Node || _node instanceof window.HTMLElement;
}
/**
 * 获取CSS的数值部分
 * @param {*} _value 
 */

function cssNumber(_value) {
  return Number((typeof _value === "string" ? _value : String(_value)).replace(/\D+/, ""));
}
/**
 * 封装Node操作的类
 */


var ENodeClass = /*#__PURE__*/function () {
  function ENodeClass(_tagOrNode, _ns) {
    _classCallCheck(this, ENodeClass);

    var node = this.node = isNode(_tagOrNode) ? _tagOrNode : _ns ? document.createElementNS(_ns, _tagOrNode) : document.createElement(_tagOrNode);
    this.matches = (node.matches || node.matchesSelector || node.msMatchesSelector || node.mozMatchesSelector || node.webkitMatchesSelector || node.oMatchesSelector).bind(node);
    this.dispatchEvent = node.dispatchEvent.bind(node);
  }
  /**
   * 将一个现成节点和ENode封装关联
   * @param {*} _node 
   */


  _createClass(ENodeClass, [{
    key: "getRelativeRect",

    /**
     * 获取相对于另一个节点的当前节点空间矩形
     * @param {*} _node 如果不给该参数，则直接给出当前节点针对自身的空间矩形
     */
    value: function getRelativeRect(_node) {
      var box = this.globalRect;
      var relNode = ENodeClass.attach(_node);

      if (relNode) {
        if (relNode.isSVG) {
          var matrix = relNode.node.getScreenCTM().inverse();
          var retMatrix = matrix.translate(box.x, box.y);
          box.x = retMatrix.e;
          box.y = retMatrix.f;

          if (this.isSVG) {
            var originRect = this.rect;
            box.width = originRect.width;
            box.height = originRect.height;
          }
        } else {
          var relGlobalRect = relNode.globalRect;
          box.x -= relGlobalRect.x - relNode.node.clientLeft;
          box.y -= relGlobalRect.y - relNode.node.clientTop;
        }
      }

      return box;
    }
    /**
     * 设置纯HTML元素的STYLE中的大小
     * @param {*} _width 宽度
     * @param {*} _height 高度
     */

  }, {
    key: "setSizeInStyle",
    value: function setSizeInStyle(_width, _height) {
      var css = window.getComputedStyle ? window.getComputedStyle(this.node) : undefined;

      if (css) {
        _width -= cssNumber(css.paddingLeft) + cssNumber(css.paddingRight) + cssNumber(css.borderLeftWidth) + cssNumber(css.borderRightWidth);
        _height -= cssNumber(css.paddingTop) + cssNumber(css.paddingBottom) + cssNumber(css.borderTopWidth) + cssNumber(css.borderBottomWidth);
      }

      this.node.style.width = "".concat(_width, "px");
      this.node.style.height = "".concat(_height, "px");
    }
    /**
     * 将屏幕上的坐标转化为相对元素的坐标
     * @param {*} _x 
     * @param {*} _y 
     */

  }, {
    key: "translatePoint",
    value: function translatePoint(_x, _y) {
      if (this.isSVG) {
        var matrix = this.node.getScreenCTM().inverse();

        var _matrix$translate = matrix.translate(_x, _y),
            x = _matrix$translate.e,
            y = _matrix$translate.f;

        return {
          x: x,
          y: y
        };
      } else {
        var rect = this.globalRect;
        return {
          x: _x - rect.x,
          y: _y - rect.y
        };
      }
    }
    /**
     * 获取或设置属性，传入null为参数值，则说明删除属性
     * @param {*} _idOrMap  属性名，或者属性名和属性值构成的对象，或者属性名构成的数组
     * @param {*} _value    属性值，如果第一参数为属性名，且不传入该参数，则获取属性；
     *                      如果第一参数为属性名列表，则或略该参数直接批量获取属性；
     *                      如果第一参数为属性名和属性值构成的对象，则忽略该参数
     */

  }, {
    key: "attr",
    value: function attr(_idOrMap, _value) {
      var node = this.node;

      if (typeof _idOrMap === "string") {
        // 只操作单个属性的处理
        if (_value === undefined) {
          return node.getAttribute(_idOrMap);
        } else if (_value === null) {
          node.removeAttribute(_idOrMap);
        } else {
          node.setAttribute(_idOrMap, _value);
        }
      } else if (_idOrMap instanceof Array) {
        // 批量获取属性
        var valueList = {};

        var _iterator = _createForOfIteratorHelper(_idOrMap),
            _step;

        try {
          for (_iterator.s(); !(_step = _iterator.n()).done;) {
            var item = _step.value;
            valueList[item] = node.getAttribute(item);
          }
        } catch (err) {
          _iterator.e(err);
        } finally {
          _iterator.f();
        }

        return valueList;
      } else {
        // 传入的是一个映射表
        for (var name in _idOrMap) {
          var value = _idOrMap[name];
          value === null ? node.removeAttribute(name) : node.setAttribute(name, value);
        }
      }

      return this;
    }
    /**
     * 获取或设置风格，传入null为参数值，则说明删除风格
     * @param {*} _idOrMap  风格名，或者风格名和风格值构成的对象，或者风格名构成的数组
     * @param {*} _value    风格值，如果第一参数为风格名，且不传入该参数，则获取风格；
     *                      如果第一参数为风格名列表，则或略该参数直接批量获取风格；
     *                      如果第一参数为风格名和风格值构成的对象，则忽略该参数
     */

  }, {
    key: "style",
    value: function style(_idOrMap, _value) {
      var styleList = this.node.style;

      if (typeof _idOrMap === "string") {
        // 只操作单个风格的处理
        if (_value === undefined) {
          return styleList[_idOrMap];
        } else {
          styleList[_idOrMap] = _value;
        }
      } else if (_idOrMap instanceof Array) {
        // 批量获取属性
        var valueList = {};

        var _iterator2 = _createForOfIteratorHelper(_idOrMap),
            _step2;

        try {
          for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
            var item = _step2.value;
            valueList[item] = styleList[item];
          }
        } catch (err) {
          _iterator2.e(err);
        } finally {
          _iterator2.f();
        }

        return valueList;
      } else {
        // 传入的是一个映射表
        for (var name in _idOrMap) {
          var value = _idOrMap[name];
          styleList[name] = value;
        }
      }

      return this;
    }
    /**
     * 获取或设置扩展数据，传入null为参数值，则说明删除扩展数据
     * @param {*} _idOrMap  数据名，或者数据名和数据值构成的对象，或者数据名构成的数组
     * @param {*} _value    数据值，如果第一参数为数据名，且不传入该参数，则获取数据；
     *                      如果第一参数为数据名列表，则或略该参数直接批量获取数据；
     *                      如果第一参数为数据名和数据值构成的对象，则忽略该参数
     */

  }, {
    key: "data",
    value: function data(_idOrMap, _value) {
      var node = this.node;

      if (typeof _idOrMap === "string") {
        // 只操作单个属性的处理
        if (_value === undefined) {
          return JSON.parse(node.getAttribute(namedData(_idOrMap)));
        } else if (_value === null) {
          node.removeAttribute(namedData(_idOrMap));
        } else {
          node.setAttribute(namedData(_idOrMap), JSON.stringify(_value));
        }
      } else if (_idOrMap instanceof Array) {
        // 批量获取属性
        var valueList = {};

        var _iterator3 = _createForOfIteratorHelper(_idOrMap),
            _step3;

        try {
          for (_iterator3.s(); !(_step3 = _iterator3.n()).done;) {
            var item = _step3.value;
            valueList[item] = JSON.parse(node.getAttribute(namedData(item)));
          }
        } catch (err) {
          _iterator3.e(err);
        } finally {
          _iterator3.f();
        }

        return valueList;
      } else {
        // 传入的是一个映射表
        for (var name in _idOrMap) {
          var value = _idOrMap[name];
          value === null ? node.removeAttribute(namedData(name)) : node.setAttribute(namedData(name), JSON.stringify(value));
        }
      }

      return this;
    }
    /**
     * 检查对象是否具有某个风格类
     * @param {*} _name 
     */

  }, {
    key: "hasClass",
    value: function hasClass(_name) {
      return this.matches(".".concat(_name));
    }
    /**
     * 添加对象某个风格类
     * @param {*} _name 
     */

  }, {
    key: "addClass",
    value: function addClass(_name) {
      var classList = this.node.classList;

      if (classList) {
        classList.add(_name);
      } else {
        var classStr = this.attr("class");
        classList = classStr ? classStr.split(/\s+/) : [];

        if (classList.indexOf(_name) < 0) {
          this.attr("class", "".concat(classStr, " ").concat(_name));
        }
      }

      return this;
    }
    /**
     * 移除对象某个风格类
     * @param {*} _name 
     */

  }, {
    key: "removeClass",
    value: function removeClass(_name) {
      var classList = this.node.classList;

      if (classList) {
        classList.remove(_name);
      } else {
        var classStr = this.attr("class");
        classList = classStr ? classStr.split(/\s+/) : [];
        var idx = classList.indexOf(_name);

        if (idx >= 0) {
          classList[idx] = "";
          this.attr("class", classList.join(" "));
        }
      }

      return this;
    }
    /**
     * 获取风格类型列表
     */

  }, {
    key: "parent",

    /**
     * 查找父节点
     * @param {*} _selector 
     */
    value: function parent(_selector) {
      var parentENode;
      var element = this.node;

      while (element = element.parentElement) {
        parentENode = ENodeClass.attach(element);

        if (!_selector) {
          break;
        } else if (parentENode.matches(_selector)) {
          break;
        }
      }

      return parentENode;
    }
    /**
     * 查找根节点
     */

  }, {
    key: "firstDescendant",

    /**
     * 获取符合选择描述的第一个后代
     * @param {*} _selector 
     */
    value: function firstDescendant(_selector) {
      _selector = _selector || "*";
      var node = this.node.querySelector(_selector);
      return node ? ENodeClass.attach(node) : undefined;
    }
    /**
     * 获取所有满足选择描述的后代数组
     * @param {*} _selector 
     */

  }, {
    key: "descendant",
    value: function descendant(_selector) {
      _selector = _selector || "*";
      var elmList = this.node.querySelectorAll(_selector);
      var list = [];

      var _iterator4 = _createForOfIteratorHelper(elmList),
          _step4;

      try {
        for (_iterator4.s(); !(_step4 = _iterator4.n()).done;) {
          var item = _step4.value;
          var node = ENodeClass.attach(item);

          if (node.matches(_selector)) {
            list.push(node);
          }
        }
      } catch (err) {
        _iterator4.e(err);
      } finally {
        _iterator4.f();
      }

      return list;
    }
    /**
     * 获取所有满足选择描述的后代的迭代器
     * @param {*} _selector 
     */

  }, {
    key: "getDescandant",
    value: /*#__PURE__*/regenerator.mark(function getDescandant(_selector) {
      var elmList, _iterator5, _step5, item, node;

      return regenerator.wrap(function getDescandant$(_context) {
        while (1) {
          switch (_context.prev = _context.next) {
            case 0:
              _selector = _selector || "*";
              elmList = this.node.querySelectorAll(_selector);
              _iterator5 = _createForOfIteratorHelper(elmList);
              _context.prev = 3;

              _iterator5.s();

            case 5:
              if ((_step5 = _iterator5.n()).done) {
                _context.next = 13;
                break;
              }

              item = _step5.value;
              node = ENodeClass.attach(item);

              if (!node.matches(_selector)) {
                _context.next = 11;
                break;
              }

              _context.next = 11;
              return node;

            case 11:
              _context.next = 5;
              break;

            case 13:
              _context.next = 18;
              break;

            case 15:
              _context.prev = 15;
              _context.t0 = _context["catch"](3);

              _iterator5.e(_context.t0);

            case 18:
              _context.prev = 18;

              _iterator5.f();

              return _context.finish(18);

            case 21:
            case "end":
              return _context.stop();
          }
        }
      }, getDescandant, this, [[3, 15, 18, 21]]);
    })
    /**
     * 获取符合第一个选择描述的子代
     * @param {*} _selector 
     */

  }, {
    key: "firstChild",
    value: function firstChild(_selector) {
      if (_selector) {
        var childNode;

        var _iterator6 = _createForOfIteratorHelper(this.node.children),
            _step6;

        try {
          for (_iterator6.s(); !(_step6 = _iterator6.n()).done;) {
            var item = _step6.value;
            var node = ENodeClass.attach(item);

            if (node.matches(_selector)) {
              childNode = node;
              break;
            }
          }
        } catch (err) {
          _iterator6.e(err);
        } finally {
          _iterator6.f();
        }

        return childNode;
      } else {
        return ENodeClass.attach(this.node.firstElementChild);
      }
    }
    /**
     * 获取满足选择描述的子代数组
     * @param {*} _selector 
     */

  }, {
    key: "children",
    value: function children(_selector) {
      var elmList = this.node.children;
      var list = [];

      var _iterator7 = _createForOfIteratorHelper(elmList),
          _step7;

      try {
        for (_iterator7.s(); !(_step7 = _iterator7.n()).done;) {
          var item = _step7.value;
          var node = ENodeClass.attach(item);

          if (!_selector || node.matches(_selector)) {
            list.push(node);
          }
        }
      } catch (err) {
        _iterator7.e(err);
      } finally {
        _iterator7.f();
      }

      return list;
    }
    /**
     * 获取满足选择描述的子代迭代器
     * @param {*} _selector 
     */

  }, {
    key: "getChildren",
    value: /*#__PURE__*/regenerator.mark(function getChildren(_selector) {
      var elmList, _iterator8, _step8, item, node;

      return regenerator.wrap(function getChildren$(_context2) {
        while (1) {
          switch (_context2.prev = _context2.next) {
            case 0:
              elmList = this.node.children;
              _iterator8 = _createForOfIteratorHelper(elmList);
              _context2.prev = 2;

              _iterator8.s();

            case 4:
              if ((_step8 = _iterator8.n()).done) {
                _context2.next = 12;
                break;
              }

              item = _step8.value;
              node = ENodeClass.attach(item);

              if (!(!_selector || node.matches(_selector))) {
                _context2.next = 10;
                break;
              }

              _context2.next = 10;
              return node;

            case 10:
              _context2.next = 4;
              break;

            case 12:
              _context2.next = 17;
              break;

            case 14:
              _context2.prev = 14;
              _context2.t0 = _context2["catch"](2);

              _iterator8.e(_context2.t0);

            case 17:
              _context2.prev = 17;

              _iterator8.f();

              return _context2.finish(17);

            case 20:
            case "end":
              return _context2.stop();
          }
        }
      }, getChildren, this, [[2, 14, 17, 20]]);
    })
    /**
     * 加入为一个父元素的最后一个子项
     * @param {*} _parent 
     */

  }, {
    key: "appendTo",
    value: function appendTo(_parent) {
      var parentNode = isNode(_parent) ? _parent : isENode(_parent) ? _parent.node : null;

      if (parentNode) {
        this.node.remove();
        parentNode.appendChild(this.node);
      }

      return this;
    }
    /**
     * 加入为一个父元素的第一个子项
     * @param {*} _parent 
     */

  }, {
    key: "insertToTop",
    value: function insertToTop(_parent) {
      var parentNode = isNode(_parent) ? _parent : isENode(_parent) ? _parent.node : null;

      if (parentNode) {
        this.node.remove();
        parentNode.insertBefore(this.node, parentNode.firstElementChild);
      }

      return this;
    }
    /**
     * 插入到某个元素的后面去
     * @param {*} _sibling 
     */

  }, {
    key: "insertAfter",
    value: function insertAfter(_sibling) {
      var siblingNode = ENodeClass.attach(_sibling);

      if (siblingNode) {
        var parentNode = siblingNode.parent();

        if (parentNode) {
          this.node.remove();
          var nextSibling = siblingNode.node.nextSibling;
          nextSibling ? parentNode.node.insertBefore(this.node, nextSibling) : parentNode.node.appendChild(this.node);
        }
      }

      return this;
    }
    /**
     * 插入到某个元素的前面去
     * @param {*} _sibling 
     */

  }, {
    key: "insertBefore",
    value: function insertBefore(_sibling) {
      var siblingNode = ENodeClass.attach(_sibling);

      if (siblingNode) {
        var parentNode = siblingNode.parent();

        if (parentNode) {
          this.node.remove();
          parentNode.node.insertBefore(this.node, siblingNode.node);
        }
      }

      return this;
    }
    /**
     * 移除当前元素
     */

  }, {
    key: "remove",
    value: function remove() {
      this.node.remove();
      return this;
    }
    /**
     * 转换点的坐标
     * @param {*} _point 
     * @param {*} _toOuter 
     */

  }, {
    key: "convertPoint",
    value: function convertPoint(_point, _toOuter) {
      var x = _point ? _point.x || 0 : 0;
      var y = _point ? _point.y || 0 : 0;

      if (_toOuter) {
        x += this.node.offsetLeft;
        y += this.node.offsetTop;
      } else {
        x -= this.node.offsetLeft;
        y -= this.node.offsetTop;
      }

      return {
        x: x,
        y: y
      };
    }
    /**
     * 添加事件监听
     * @param {*} _event 
     * @param {*} _fn 
     * @param {*} _opt 
     */

  }, {
    key: "on",
    value: function on(_event, _fn, _opt) {
      this.node.addEventListener(_event, _fn, _opt);
      return this;
    }
    /**
     * 移除事件监听
     * @param {*} _event 
     * @param {*} _fn 
     * @param {*} _opt 
     */

  }, {
    key: "off",
    value: function off(_event, _fn, _opt) {
      this.node.removeEventListener(_event, _fn, _opt);
      return this;
    }
    /**
     * 判断两个节点对象是否相同
     * @param {*} _other 
     */

  }, {
    key: "isSame",
    value: function isSame(_other) {
      return this.node.isSameNode(isENode(_other) ? _other.node : _other);
    }
    /**
     * 创建一个子元素，并追加到最后
     * @param {*} _tag 
     * @param {*} _ns 
     */

  }, {
    key: "createChild",
    value: function createChild(_tag, _ns) {
      var child = new ENodeClass(_tag, _ns);
      child && child.appendTo(this);
      return child;
    }
    /**
     * 创建一个SVG的子元素，并追加到最后
     * @param {*} _tag 
     */

  }, {
    key: "createSVGChild",
    value: function createSVGChild(_tag) {
      return this.isSVG ? this.createChild(_tag, NS.SVG) : SVG().appendTo(this);
    }
    /**
     * 删除所有成员
     */

  }, {
    key: "clearChildren",
    value: function clearChildren() {
      this.node.innerHTML = "";
      return this;
    }
  }, {
    key: "id",

    /**
     * 获取ID
     */
    get: function get() {
      var value = this.node.getAttribute("id");
      return value || "";
    }
    /**
     * 设置ID
     */
    ,
    set: function set(_value) {
      this.node.setAttribute("id", _value);
    }
    /**
     * 获取标签名
     */

  }, {
    key: "tagName",
    get: function get() {
      return this.node.tagName.toLowerCase();
    }
    /**
     * 获取风格类
     */

  }, {
    key: "class",
    get: function get() {
      var value = this.node.getAttribute("class");
      return value || "";
    }
    /**
     * 设置风格类
     */
    ,
    set: function set(_value) {
      this.node.setAttribute("class", _value);
    }
    /**
     * 检查是否是SVG的成员元素
     */

  }, {
    key: "isSVG",
    get: function get() {
      return this.node instanceof SVGElement;
    }
    /**
     * 获取文本内容
     */

  }, {
    key: "text",
    get: function get() {
      return this.node.textContent || "";
    }
    /**
     * 设置文本内容
     */
    ,
    set: function set(_value) {
      if (this.isSVG) {
        this.node.innerHTML = "";
        this.node.appendChild(document.createTextNode(_value));
      } else {
        this.node.innerText = _value;
      }
    }
    /**
     * 元素的y坐标
     */

  }, {
    key: "top",
    get: function get() {
      if (this.isSVG) {
        return this.node.getBBox().y;
      } else {
        return this.node.offsetTop;
      }
    }
    /**
     * 元素的x坐标
     */

  }, {
    key: "left",
    get: function get() {
      if (this.isSVG) {
        return this.node.getBBox().x;
      } else {
        return this.node.offsetLeft;
      }
    }
    /**
     * 元素的宽度信息
     */

  }, {
    key: "width",
    get: function get() {
      if (this.isSVG) {
        return this.node.getBBox().width;
      } else {
        return this.node.offsetWidth;
      }
    }
    /**
     * 元素的高度信息
     */

  }, {
    key: "height",
    get: function get() {
      if (this.isSVG) {
        return this.node.getBBox().height;
      } else {
        return this.node.offsetHeight;
      }
    }
    /**
     * 获取当前节点相对于自身已定位坐标系的矩形
     */

  }, {
    key: "rect",
    get: function get() {
      var node = this.node;
      return this.isSVG ? node.getBBox() : {
        x: node.offsetLeft,
        y: node.offsetTop,
        width: node.offsetWidth,
        height: node.offsetHeight
      };
    }
    /**
     * 获取元素内部的矩形空间
     */

  }, {
    key: "clientRect",
    get: function get() {
      var node = this.node;
      return this.isSVG ? node.getBBox() : {
        x: node.clientLeft,
        y: node.clientTop,
        width: node.clientWidth,
        height: node.clientHeight
      };
    }
    /**
     * 获取当前节点相对于全局的空间矩形
     */

  }, {
    key: "globalRect",
    get: function get() {
      return this.node.getBoundingClientRect();
    }
    /**
     * 获取当前节点相对于父元素的空间矩形
     */

  }, {
    key: "offsetRect",
    get: function get() {
      var node = this.node;
      var box = this.isSVG ? node.getBoundingClientRect() : {
        x: node.offsetLeft,
        y: node.offsetTop,
        width: node.offsetWidth,
        height: node.offsetHeight
      };
      return box;
    }
  }, {
    key: "classList",
    get: function get() {
      var classStr = this.attr("class");
      return classStr ? classStr.split(/\s+/) : [];
    }
  }, {
    key: "root",
    get: function get() {
      return this.isSVG ? ENodeClass.attach(this.node.ownerSVGElement || this.parent("body")) : this.parent("body");
    }
  }], [{
    key: "attach",
    value: function attach(_node) {
      return isNode(_node) ? new ENodeClass(_node) : isENode(_node) ? _node : _node ? ENodeClass.attach(document.querySelector(_node)) : undefined;
    }
  }]);

  return ENodeClass;
}();
/**
 * 获取或创建一个ENode对象，如果不传入参数则返回ENodeClass类
 * @param {*} _node 
 * @param {*} _ns 
 */

function ENode(_node, _ns) {
  return arguments.length <= 0 ? ENodeClass : new ENodeClass(_node, _ns);
}
/**
 * 创建一个SVG的ENode对象
 */

function SVG() {
  var svg = new ENodeClass("svg", NS.SVG);
  return svg.attr({
    xmlns: NS.SVG,
    "xmlns:xlink": NS.XLINK,
    version: "1.1"
  });
}
/**
 * 检查参数是不是一个ENode封装
 * @param {*} _n