/**
 * interact.js 1.10.27
 *
 * Copyright (c) 2012-present Taye Adeyemi <dev@taye.me>
 * Released under the MIT License.
 * https://raw.github.com/taye/interact.js/main/LICENSE
 */

import * as arr from "../utils/arr.js";
import * as domUtils from "../utils/domUtils.js";
import is from "../utils/is.js";
import pExtend from "../utils/pointerExtend.js";
import * as pointerUtils from "../utils/pointerUtils.js";
function install(scope) {
  var _scope$document;
  const targets = [];
  const delegatedEvents = {};
  const documents = [];
  const eventsMethods = {
    add,
    remove,
    addDelegate,
    removeDelegate,
    delegateListener,
    delegateUseCapture,
    delegatedEvents,
    documents,
    targets,
    supportsOptions: false,
    supportsPassive: false
  };

  // check if browser supports passive events and options arg
  (_scope$document = scope.document) == null ? void 0 : _scope$document.createElement('div').addEventListener('test', null, {
    get capture() {
      return eventsMethods.supportsOptions = true;
    },
    get passive() {
      return eventsMethods.supportsPassive = true;
    }
  });
  scope.events = eventsMethods;
  function add(eventTarget, type, listener, optionalArg) {
    if (!eventTarget.addEventListener) return;
    const options = getOptions(optionalArg);
    let target = arr.find(targets, t => t.eventTarget === eventTarget);
    if (!target) {
      target = {
        eventTarget,
        events: {}
      };
      targets.push(target);
    }
    if (!target.events[type]) {
      target.events[type] = [];
    }
    if (!arr.find(target.events[type], l => l.func === listener && optionsMatch(l.options, options))) {
      eventTarget.addEventListener(type, listener, eventsMethods.supportsOptions ? options : options.capture);
      target.events[type].push({
        func: listener,
        options
      });
    }
  }
  function remove(eventTarget, type, listener, optionalArg) {
    if (!eventTarget.addEventListener || !eventTarget.removeEventListener) return;
    const targetIndex = arr.findIndex(targets, t => t.eventTarget === eventTarget);
    const target = targets[targetIndex];
    if (!target || !target.events) {
      return;
    }
    if (type === 'all') {
      for (type in target.events) {
        if (target.events.hasOwnProperty(type)) {
          remove(eventTarget, type, 'all');
        }
      }
      return;
    }
    let typeIsEmpty = false;
    const typeListeners = target.events[type];
    if (typeListeners) {
      if (listener === 'all') {
        for (let i = typeListeners.length - 1; i >= 0; i--) {
          const entry = typeListeners[i];
          remove(eventTarget, type, entry.func, entry.options);
        }
        return;
      } else {
        const options = getOptions(optionalArg);
        for (let i = 0; i < typeListeners.length; i++) {
          const entry = typeListeners[i];
          if (entry.func === listener && optionsMatch(entry.options, options)) {
            eventTarget.removeEventListener(type, listener, eventsMethods.supportsOptions ? options : options.capture);
            typeListeners.splice(i, 1);
            if (typeListeners.length === 0) {
              delete target.events[type];
              typeIsEmpty = true;
            }
            break;
          }
        }
      }
    }
    if (typeIsEmpty && !Object.keys(target.events).length) {
      targets.splice(targetIndex, 1);
    }
  }
  function addDelegate(selector, context, type, listener, optionalArg) {
    const options = getOptions(optionalArg);
    if (!delegatedEvents[type]) {
      delegatedEvents[type] = [];

      // add delegate listener functions
      for (const doc of documents) {
        add(doc, type, delegateListener);
        add(doc, type, delegateUseCapture, true);
      }
    }
    const delegates = delegatedEvents[type];
    let delegate = arr.find(delegates, d => d.selector === selector && d.context === context);
    if (!delegate) {
      delegate = {
        selector,
        context,
        listeners: []
      };
      delegates.push(delegate);
    }
    delegate.listeners.push({
      func: listener,
      options
    });
  }
  function removeDelegate(selector, context, type, listener, optionalArg) {
    const options = getOptions(optionalArg);
    const delegates = delegatedEvents[type];
    let matchFound = false;
    let index;
    if (!delegates) return;

    // count from last index of delegated to 0
    for (index = delegates.length - 1; index >= 0; index--) {
      const cur = delegates[index];
      // look for matching selector and context Node
      if (cur.selector === selector && cur.context === context) {
        const {
          listeners
        } = cur;

        // each item of the listeners array is an array: [function, capture, passive]
        for (let i = listeners.length - 1; i >= 0; i--) {
          const entry = listeners[i];

          // check if the listener functions and capture and passive flags match
          if (entry.func === listener && optionsMatch(entry.options, options)) {
            // remove the listener from the array of listeners
            listeners.splice(i, 1);

            // if all listeners for this target have been removed
            // remove the target from the delegates array
            if (!listeners.length) {
              delegates.splice(index, 1);

              // remove delegate function from context
              remove(context, type, delegateListener);
              remove(context, type, delegateUseCapture, true);
            }

            // only remove one listener
            matchFound = true;
            break;
          }
        }
        if (matchFound) {
          break;
        }
      }
    }
  }

  // bound to the interactable context when a DOM event
  // listener is added to a selector interactable
  function delegateListener(event, optionalArg) {
    const options = getOptions(optionalArg);
    const fakeEvent = new FakeEvent(event);
    const delegates = delegatedEvents[event.type];
    const [eventTarget] = pointerUtils.getEventTargets(event);
    let element = eventTarget;

    // climb up document tree looking for selector matches
    while (is.element(element)) {
      for (let i = 0; i < delegates.length; i++) {
        const cur = delegates[i];
        const {
          selector,
          context
        } = cur;
        if (domUtils.matchesSelector(element, selector) && domUtils.nodeContains(context, eventTarget) && domUtils.nodeContains(context, element)) {
          const {
            listeners
          } = cur;
          fakeEvent.currentTarget = element;
          for (const entry of listeners) {
            if (optionsMatch(entry.options, options)) {
              entry.func(fakeEvent);
            }
          }
        }
      }
      element = domUtils.parentNode(element);
    }
  }
  function delegateUseCapture(event) {
    return delegateListener.call(this, event, true);
  }

  // for type inferrence
  return eventsMethods;
}
class FakeEvent {
  constructor(originalEvent) {
    this.currentTarget = void 0;
    this.originalEvent = void 0;
    this.type = void 0;
    this.originalEvent = originalEvent;
    // duplicate the event so that currentTarget can be changed
    pExtend(this, originalEvent);
  }
  preventOriginalDefault() {
    this.originalEvent.preventDefault();
  }
  stopPropagation() {
    this.originalEvent.stopPropagation();
  }
  stopImmediatePropagation() {
    this.originalEvent.stopImmediatePropagation();
  }
}
function getOptions(param) {
  if (!is.object(param)) {
    return {
      capture: !!param,
      passive: false
    };
  }
  return {
    capture: !!param.capture,
    passive: !!param.passive
  };
}
function optionsMatch(a, b) {
  if (a === b) return true;
  if (typeof a === 'boolean') return !!b.capture === a && !!b.passive === false;
  return !!a.capture === !!b.capture && !!a.passive === !!b.passive;
}
var events = {
  id: 'events',
  install
};
export { events as default };
//# sourceMappingURL=events.js.map