import {
  EventType_default,
  Event_default,
  Target_default,
  listen,
  listenOnce,
  unlistenByKey
} from "./chunk-KJXIHBKT.js";
import {
  isEmpty
} from "./chunk-5RHQVMYD.js";

// node_modules/ol/util.js
function abstract() {
  throw new Error("Unimplemented abstract method.");
}
var uidCounter_ = 0;
function getUid(obj) {
  return obj.ol_uid || (obj.ol_uid = String(++uidCounter_));
}
var VERSION = "10.6.1";

// node_modules/ol/ObjectEventType.js
var ObjectEventType_default = {
  /**
   * Triggered when a property is changed.
   * @event module:ol/Object.ObjectEvent#propertychange
   * @api
   */
  PROPERTYCHANGE: "propertychange"
};

// node_modules/ol/Observable.js
var Observable = class extends Target_default {
  constructor() {
    super();
    this.on = /** @type {ObservableOnSignature<import("./events").EventsKey>} */
    this.onInternal;
    this.once = /** @type {ObservableOnSignature<import("./events").EventsKey>} */
    this.onceInternal;
    this.un = /** @type {ObservableOnSignature<void>} */
    this.unInternal;
    this.revision_ = 0;
  }
  /**
   * Increases the revision counter and dispatches a 'change' event.
   * @api
   */
  changed() {
    ++this.revision_;
    this.dispatchEvent(EventType_default.CHANGE);
  }
  /**
   * Get the version number for this object.  Each time the object is modified,
   * its version number will be incremented.
   * @return {number} Revision.
   * @api
   */
  getRevision() {
    return this.revision_;
  }
  /**
   * @param {string|Array<string>} type Type.
   * @param {function((Event|import("./events/Event").default)): ?} listener Listener.
   * @return {import("./events.js").EventsKey|Array<import("./events.js").EventsKey>} Event key.
   * @protected
   */
  onInternal(type, listener) {
    if (Array.isArray(type)) {
      const len = type.length;
      const keys = new Array(len);
      for (let i = 0; i < len; ++i) {
        keys[i] = listen(this, type[i], listener);
      }
      return keys;
    }
    return listen(
      this,
      /** @type {string} */
      type,
      listener
    );
  }
  /**
   * @param {string|Array<string>} type Type.
   * @param {function((Event|import("./events/Event").default)): ?} listener Listener.
   * @return {import("./events.js").EventsKey|Array<import("./events.js").EventsKey>} Event key.
   * @protected
   */
  onceInternal(type, listener) {
    let key;
    if (Array.isArray(type)) {
      const len = type.length;
      key = new Array(len);
      for (let i = 0; i < len; ++i) {
        key[i] = listenOnce(this, type[i], listener);
      }
    } else {
      key = listenOnce(
        this,
        /** @type {string} */
        type,
        listener
      );
    }
    listener.ol_key = key;
    return key;
  }
  /**
   * Unlisten for a certain type of event.
   * @param {string|Array<string>} type Type.
   * @param {function((Event|import("./events/Event").default)): ?} listener Listener.
   * @protected
   */
  unInternal(type, listener) {
    const key = (
      /** @type {Object} */
      listener.ol_key
    );
    if (key) {
      unByKey(key);
    } else if (Array.isArray(type)) {
      for (let i = 0, ii = type.length; i < ii; ++i) {
        this.removeEventListener(type[i], listener);
      }
    } else {
      this.removeEventListener(type, listener);
    }
  }
};
Observable.prototype.on;
Observable.prototype.once;
Observable.prototype.un;
function unByKey(key) {
  if (Array.isArray(key)) {
    for (let i = 0, ii = key.length; i < ii; ++i) {
      unlistenByKey(key[i]);
    }
  } else {
    unlistenByKey(
      /** @type {import("./events.js").EventsKey} */
      key
    );
  }
}
var Observable_default = Observable;

// node_modules/ol/Object.js
var ObjectEvent = class extends Event_default {
  /**
   * @param {string} type The event type.
   * @param {string} key The property name.
   * @param {*} oldValue The old value for `key`.
   */
  constructor(type, key, oldValue) {
    super(type);
    this.key = key;
    this.oldValue = oldValue;
  }
};
var BaseObject = class extends Observable_default {
  /**
   * @param {Object<string, *>} [values] An object with key-value pairs.
   */
  constructor(values) {
    super();
    this.on;
    this.once;
    this.un;
    getUid(this);
    this.values_ = null;
    if (values !== void 0) {
      this.setProperties(values);
    }
  }
  /**
   * Gets a value.
   * @param {string} key Key name.
   * @return {*} Value.
   * @api
   */
  get(key) {
    let value;
    if (this.values_ && this.values_.hasOwnProperty(key)) {
      value = this.values_[key];
    }
    return value;
  }
  /**
   * Get a list of object property names.
   * @return {Array<string>} List of property names.
   * @api
   */
  getKeys() {
    return this.values_ && Object.keys(this.values_) || [];
  }
  /**
   * Get an object of all property names and values.
   * @return {Object<string, *>} Object.
   * @api
   */
  getProperties() {
    return this.values_ && Object.assign({}, this.values_) || {};
  }
  /**
   * Get an object of all property names and values.
   * @return {Object<string, *>?} Object.
   */
  getPropertiesInternal() {
    return this.values_;
  }
  /**
   * @return {boolean} The object has properties.
   */
  hasProperties() {
    return !!this.values_;
  }
  /**
   * @param {string} key Key name.
   * @param {*} oldValue Old value.
   */
  notify(key, oldValue) {
    let eventType;
    eventType = `change:${key}`;
    if (this.hasListener(eventType)) {
      this.dispatchEvent(new ObjectEvent(eventType, key, oldValue));
    }
    eventType = ObjectEventType_default.PROPERTYCHANGE;
    if (this.hasListener(eventType)) {
      this.dispatchEvent(new ObjectEvent(eventType, key, oldValue));
    }
  }
  /**
   * @param {string} key Key name.
   * @param {import("./events.js").Listener} listener Listener.
   */
  addChangeListener(key, listener) {
    this.addEventListener(`change:${key}`, listener);
  }
  /**
   * @param {string} key Key name.
   * @param {import("./events.js").Listener} listener Listener.
   */
  removeChangeListener(key, listener) {
    this.removeEventListener(`change:${key}`, listener);
  }
  /**
   * Sets a value.
   * @param {string} key Key name.
   * @param {*} value Value.
   * @param {boolean} [silent] Update without triggering an event.
   * @api
   */
  set(key, value, silent) {
    const values = this.values_ || (this.values_ = {});
    if (silent) {
      values[key] = value;
    } else {
      const oldValue = values[key];
      values[key] = value;
      if (oldValue !== value) {
        this.notify(key, oldValue);
      }
    }
  }
  /**
   * Sets a collection of key-value pairs.  Note that this changes any existing
   * properties and adds new ones (it does not remove any existing properties).
   * @param {Object<string, *>} values Values.
   * @param {boolean} [silent] Update without triggering an event.
   * @api
   */
  setProperties(values, silent) {
    for (const key in values) {
      this.set(key, values[key], silent);
    }
  }
  /**
   * Apply any properties from another object without triggering events.
   * @param {BaseObject} source The source object.
   * @protected
   */
  applyProperties(source) {
    if (!source.values_) {
      return;
    }
    Object.assign(this.values_ || (this.values_ = {}), source.values_);
  }
  /**
   * Unsets a property.
   * @param {string} key Key name.
   * @param {boolean} [silent] Unset without triggering an event.
   * @api
   */
  unset(key, silent) {
    if (this.values_ && key in this.values_) {
      const oldValue = this.values_[key];
      delete this.values_[key];
      if (isEmpty(this.values_)) {
        this.values_ = null;
      }
      if (!silent) {
        this.notify(key, oldValue);
      }
    }
  }
};
var Object_default = BaseObject;

export {
  abstract,
  getUid,
  VERSION,
  ObjectEventType_default,
  Observable_default,
  Object_default
};
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