devextreme
Version:
HTML5 JavaScript Component Suite for Responsive Web Development
70 lines (68 loc) • 2.63 kB
JavaScript
/**
* DevExtreme (cjs/events/double_click.js)
* Version: 21.1.4
* Build date: Mon Jun 21 2021
*
* Copyright (c) 2012 - 2021 Developer Express Inc. ALL RIGHTS RESERVED
* Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
*/
;
exports.name = void 0;
var _events_engine = _interopRequireDefault(require("../events/core/events_engine"));
var _dom = require("../core/utils/dom");
var _dom_adapter = _interopRequireDefault(require("../core/dom_adapter"));
var _class = _interopRequireDefault(require("../core/class"));
var _event_registrator = _interopRequireDefault(require("./core/event_registrator"));
var _click = require("./click");
var _index = require("./utils/index");
function _interopRequireDefault(obj) {
return obj && obj.__esModule ? obj : {
default: obj
}
}
var DBLCLICK_EVENT_NAME = "dxdblclick";
exports.name = DBLCLICK_EVENT_NAME;
var DBLCLICK_NAMESPACE = "dxDblClick";
var NAMESPACED_CLICK_EVENT = (0, _index.addNamespace)(_click.name, DBLCLICK_NAMESPACE);
var DBLCLICK_TIMEOUT = 300;
var DblClick = _class.default.inherit({
ctor: function() {
this._handlerCount = 0;
this._forgetLastClick()
},
_forgetLastClick: function() {
this._firstClickTarget = null;
this._lastClickTimeStamp = -DBLCLICK_TIMEOUT
},
add: function() {
if (this._handlerCount <= 0) {
_events_engine.default.on(_dom_adapter.default.getDocument(), NAMESPACED_CLICK_EVENT, this._clickHandler.bind(this))
}
this._handlerCount++
},
_clickHandler: function(e) {
var timeStamp = e.timeStamp || Date.now();
var timeBetweenClicks = timeStamp - this._lastClickTimeStamp;
var isSimulated = timeBetweenClicks < 0;
var isDouble = !isSimulated && timeBetweenClicks < DBLCLICK_TIMEOUT;
if (isDouble) {
(0, _index.fireEvent)({
type: DBLCLICK_EVENT_NAME,
target: (0, _dom.closestCommonParent)(this._firstClickTarget, e.target),
originalEvent: e
});
this._forgetLastClick()
} else {
this._firstClickTarget = e.target;
this._lastClickTimeStamp = timeStamp
}
},
remove: function() {
this._handlerCount--;
if (this._handlerCount <= 0) {
this._forgetLastClick();
_events_engine.default.off(_dom_adapter.default.getDocument(), NAMESPACED_CLICK_EVENT)
}
}
});
(0, _event_registrator.default)(DBLCLICK_EVENT_NAME, new DblClick);