devextreme/cjs/events/core/emitter.js

HTML5 JavaScript Component Suite for Responsive Web Development

/**
 * DevExtreme (cjs/events/core/emitter.js)
 * Version: 21.2.4
 * Build date: Mon Dec 06 2021
 *
 * Copyright (c) 2012 - 2021 Developer Express Inc. ALL RIGHTS RESERVED
 * Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
 */

"use strict";
exports.default = void 0;
var _renderer = _interopRequireDefault(require("../../core/renderer"));
var _common = require("../../core/utils/common");
var _class = _interopRequireDefault(require("../../core/class"));
var _callbacks = _interopRequireDefault(require("../../core/utils/callbacks"));
var _extend = require("../../core/utils/extend");
var _index = require("../utils/index");

function _interopRequireDefault(obj) {
    return obj && obj.__esModule ? obj : {
        default: obj
    }
}
var Emitter = _class.default.inherit({
    ctor: function(element) {
        this._$element = (0, _renderer.default)(element);
        this._cancelCallback = (0, _callbacks.default)();
        this._acceptCallback = (0, _callbacks.default)()
    },
    getElement: function() {
        return this._$element
    },
    validate: function(e) {
        return !(0, _index.isDxMouseWheelEvent)(e)
    },
    validatePointers: function(e) {
        return 1 === (0, _index.hasTouches)(e)
    },
    allowInterruptionByMouseWheel: function() {
        return true
    },
    configure: function(data) {
        (0, _extend.extend)(this, data)
    },
    addCancelCallback: function(callback) {
        this._cancelCallback.add(callback)
    },
    removeCancelCallback: function() {
        this._cancelCallback.empty()
    },
    _cancel: function(e) {
        this._cancelCallback.fire(this, e)
    },
    addAcceptCallback: function(callback) {
        this._acceptCallback.add(callback)
    },
    removeAcceptCallback: function() {
        this._acceptCallback.empty()
    },
    _accept: function(e) {
        this._acceptCallback.fire(this, e)
    },
    _requestAccept: function(e) {
        this._acceptRequestEvent = e
    },
    _forgetAccept: function() {
        this._accept(this._acceptRequestEvent);
        this._acceptRequestEvent = null
    },
    start: _common.noop,
    move: _common.noop,
    end: _common.noop,
    cancel: _common.noop,
    reset: function() {
        if (this._acceptRequestEvent) {
            this._accept(this._acceptRequestEvent)
        }
    },
    _fireEvent: function(eventName, e, params) {
        var eventData = (0, _extend.extend)({
            type: eventName,
            originalEvent: e,
            target: this._getEmitterTarget(e),
            delegateTarget: this.getElement().get(0)
        }, params);
        e = (0, _index.fireEvent)(eventData);
        if (e.cancel) {
            this._cancel(e)
        }
        return e
    },
    _getEmitterTarget: function(e) {
        return (this.delegateSelector ? (0, _renderer.default)(e.target).closest(this.delegateSelector) : this.getElement()).get(0)
    },
    dispose: _common.noop
});
var _default = Emitter;
exports.default = _default;
module.exports = exports.default;
module.exports.default = exports.default;