devextreme
Version:
HTML5 JavaScript Component Suite for Responsive Web Development
80 lines (78 loc) • 2.7 kB
JavaScript
/**
* DevExtreme (cjs/core/utils/resize_callbacks.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 _window = require("./window");
var _dom_adapter = _interopRequireDefault(require("../dom_adapter"));
var _callbacks = _interopRequireDefault(require("./callbacks"));
var _ready_callbacks = _interopRequireDefault(require("./ready_callbacks"));
var _call_once = _interopRequireDefault(require("./call_once"));
function _interopRequireDefault(obj) {
return obj && obj.__esModule ? obj : {
default: obj
}
}
const resizeCallbacks = function() {
let prevSize;
const callbacks = (0, _callbacks.default)();
const originalCallbacksAdd = callbacks.add;
const originalCallbacksRemove = callbacks.remove;
if (!(0, _window.hasWindow)()) {
return callbacks
}
const formatSize = function() {
const window = (0, _window.getWindow)();
return {
width: window.innerWidth,
height: window.innerHeight
}
};
const handleResize = function() {
const now = formatSize();
if (now.width === prevSize.width && now.height === prevSize.height) {
return
}
let changedDimension;
if (now.width === prevSize.width) {
changedDimension = "height"
}
if (now.height === prevSize.height) {
changedDimension = "width"
}
prevSize = now;
callbacks.fire(changedDimension)
};
const setPrevSize = (0, _call_once.default)((function() {
prevSize = formatSize()
}));
let removeListener;
callbacks.add = function() {
const result = originalCallbacksAdd.apply(callbacks, arguments);
setPrevSize();
_ready_callbacks.default.add((function() {
if (!removeListener && callbacks.has()) {
removeListener = _dom_adapter.default.listen((0, _window.getWindow)(), "resize", handleResize)
}
}));
return result
};
callbacks.remove = function() {
const result = originalCallbacksRemove.apply(callbacks, arguments);
if (!callbacks.has() && removeListener) {
removeListener();
removeListener = void 0
}
return result
};
return callbacks
}();
var _default = resizeCallbacks;
exports.default = _default;
module.exports = exports.default;
module.exports.default = exports.default;