devextreme
Version:
HTML5 JavaScript Component Suite for Responsive Web Development
69 lines (67 loc) • 2.27 kB
JavaScript
/**
* DevExtreme (cjs/events/pointer/observer.js)
* Version: 23.2.6
* Build date: Wed May 01 2024
*
* Copyright (c) 2012 - 2024 Developer Express Inc. ALL RIGHTS RESERVED
* Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
*/
;
exports.default = void 0;
var _iterator = require("../../core/utils/iterator");
var _ready_callbacks = _interopRequireDefault(require("../../core/utils/ready_callbacks"));
var _dom_adapter = _interopRequireDefault(require("../../core/dom_adapter"));
function _interopRequireDefault(obj) {
return obj && obj.__esModule ? obj : {
default: obj
}
}
const addEventsListener = function(events, handler) {
_ready_callbacks.default.add((function() {
events.split(" ").forEach((function(event) {
_dom_adapter.default.listen(_dom_adapter.default.getDocument(), event, handler, true)
}))
}))
};
const Observer = function(eventMap, pointerEquals, onPointerAdding) {
onPointerAdding = onPointerAdding || function() {};
let pointers = [];
const getPointerIndex = function(e) {
let index = -1;
(0, _iterator.each)(pointers, (function(i, pointer) {
if (!pointerEquals(e, pointer)) {
return true
}
index = i;
return false
}));
return index
};
const removePointer = function(e) {
const index = getPointerIndex(e);
if (index > -1) {
pointers.splice(index, 1)
}
};
addEventsListener(eventMap.dxpointerdown, (function(e) {
if (-1 === getPointerIndex(e)) {
onPointerAdding(e);
pointers.push(e)
}
}));
addEventsListener(eventMap.dxpointermove, (function(e) {
pointers[getPointerIndex(e)] = e
}));
addEventsListener(eventMap.dxpointerup, removePointer);
addEventsListener(eventMap.dxpointercancel, removePointer);
this.pointers = function() {
return pointers
};
this.reset = function() {
pointers = []
}
};
var _default = Observer;
exports.default = _default;
module.exports = exports.default;
module.exports.default = exports.default;