/*TRANSPILED*//*

 Copyright The Closure Library Authors.
 SPDX-License-Identifier: Apache-2.0
*/
'use strict';
goog.provide("goog.events.BrowserEvent");
goog.provide("goog.events.BrowserEvent.MouseButton");
goog.provide("goog.events.BrowserEvent.PointerType");
goog.require("goog.debug");
goog.require("goog.events.Event");
goog.require("goog.events.EventType");
goog.require("goog.reflect");
goog.require("goog.userAgent");
goog.events.BrowserEvent = function(opt_e, opt_currentTarget) {
  goog.events.BrowserEvent.base(this, "constructor", opt_e ? opt_e.type : "");
  this.target = null;
  this.currentTarget = null;
  this.relatedTarget = null;
  this.offsetX = 0;
  this.offsetY = 0;
  this.clientX = 0;
  this.clientY = 0;
  this.screenX = 0;
  this.screenY = 0;
  this.button = 0;
  this.key = "";
  this.keyCode = 0;
  this.charCode = 0;
  this.ctrlKey = false;
  this.altKey = false;
  this.shiftKey = false;
  this.metaKey = false;
  this.state = null;
  this.platformModifierKey = false;
  this.pointerId = 0;
  this.pointerType = "";
  this.event_ = null;
  if (opt_e) {
    this.init(opt_e, opt_currentTarget);
  }
};
goog.inherits(goog.events.BrowserEvent, goog.events.Event);
goog.events.BrowserEvent.USE_LAYER_XY_AS_OFFSET_XY = goog.define("goog.events.BrowserEvent.USE_LAYER_XY_AS_OFFSET_XY", false);
goog.events.BrowserEvent.MouseButton = {LEFT:0, MIDDLE:1, RIGHT:2, BACK:3, FORWARD:4,};
goog.events.BrowserEvent.PointerType = {MOUSE:"mouse", PEN:"pen", TOUCH:"touch"};
goog.events.BrowserEvent.IEButtonMap = goog.debug.freeze([1, 4, 2]);
goog.events.BrowserEvent.IE_BUTTON_MAP = goog.events.BrowserEvent.IEButtonMap;
goog.events.BrowserEvent.IE_POINTER_TYPE_MAP = goog.debug.freeze({2:goog.events.BrowserEvent.PointerType.TOUCH, 3:goog.events.BrowserEvent.PointerType.PEN, 4:goog.events.BrowserEvent.PointerType.MOUSE});
goog.events.BrowserEvent.prototype.init = function(e, opt_currentTarget) {
  var type = this.type = e.type;
  var relevantTouch = e.changedTouches && e.changedTouches.length ? e.changedTouches[0] : null;
  this.target = e.target || e.srcElement;
  this.currentTarget = opt_currentTarget;
  var relatedTarget = e.relatedTarget;
  if (relatedTarget) {
    if (goog.userAgent.GECKO) {
      if (!goog.reflect.canAccessProperty(relatedTarget, "nodeName")) {
        relatedTarget = null;
      }
    }
  } else if (type == goog.events.EventType.MOUSEOVER) {
    relatedTarget = e.fromElement;
  } else if (type == goog.events.EventType.MOUSEOUT) {
    relatedTarget = e.toElement;
  }
  this.relatedTarget = relatedTarget;
  if (relevantTouch) {
    this.clientX = relevantTouch.clientX !== undefined ? relevantTouch.clientX : relevantTouch.pageX;
    this.clientY = relevantTouch.clientY !== undefined ? relevantTouch.clientY : relevantTouch.pageY;
    this.screenX = relevantTouch.screenX || 0;
    this.screenY = relevantTouch.screenY || 0;
  } else {
    if (goog.events.BrowserEvent.USE_LAYER_XY_AS_OFFSET_XY) {
      this.offsetX = e.layerX !== undefined ? e.layerX : e.offsetX;
      this.offsetY = e.layerY !== undefined ? e.layerY : e.offsetY;
    } else {
      this.offsetX = goog.userAgent.WEBKIT || e.offsetX !== undefined ? e.offsetX : e.layerX;
      this.offsetY = goog.userAgent.WEBKIT || e.offsetY !== undefined ? e.offsetY : e.layerY;
    }
    this.clientX = e.clientX !== undefined ? e.clientX : e.pageX;
    this.clientY = e.clientY !== undefined ? e.clientY : e.pageY;
    this.screenX = e.screenX || 0;
    this.screenY = e.screenY || 0;
  }
  this.button = e.button;
  this.keyCode = e.keyCode || 0;
  this.key = e.key || "";
  this.charCode = e.charCode || (type == "keypress" ? e.keyCode : 0);
  this.ctrlKey = e.ctrlKey;
  this.altKey = e.altKey;
  this.shiftKey = e.shiftKey;
  this.metaKey = e.metaKey;
  this.platformModifierKey = goog.userAgent.MAC ? e.metaKey : e.ctrlKey;
  this.pointerId = e.pointerId || 0;
  this.pointerType = goog.events.BrowserEvent.getPointerType_(e);
  this.state = e.state;
  this.event_ = e;
  if (e.defaultPrevented) {
    goog.events.BrowserEvent.superClass_.preventDefault.call(this);
  }
};
goog.events.BrowserEvent.prototype.isButton = function(button) {
  return this.event_.button == button;
};
goog.events.BrowserEvent.prototype.isMouseActionButton = function() {
  return this.isButton(goog.events.BrowserEvent.MouseButton.LEFT) && !(goog.userAgent.MAC && this.ctrlKey);
};
goog.events.BrowserEvent.prototype.stopPropagation = function() {
  goog.events.BrowserEvent.superClass_.stopPropagation.call(this);
  if (this.event_.stopPropagation) {
    this.event_.stopPropagation();
  } else {
    this.event_.cancelBubble = true;
  }
};
goog.events.BrowserEvent.prototype.preventDefault = function() {
  goog.events.BrowserEvent.superClass_.preventDefault.call(this);
  var be = this.event_;
  if (!be.preventDefault) {
    be.returnValue = false;
  } else {
    be.preventDefault();
  }
};
goog.events.BrowserEvent.prototype.getBrowserEvent = function() {
  return this.event_;
};
goog.events.BrowserEvent.getPointerType_ = function(e) {
  if (typeof e.pointerType === "string") {
    return e.pointerType;
  }
  return goog.events.BrowserEvent.IE_POINTER_TYPE_MAP[e.pointerType] || "";
};