@antv/x6
Version:
JavaScript diagramming library that uses SVG and HTML for rendering
134 lines • 4.47 kB
JavaScript
/* eslint-disable no-underscore-dangle */
let _IS_MAC = false;
let _IS_IOS = false;
let _IS_WINDOWS = false;
let _IS_IE = false;
let _IS_IE11 = false;
let _IS_EDGE = false;
let _IS_NETSCAPE = false;
let _IS_CHROME_APP = false;
let _IS_CHROME = false;
let _IS_OPERA = false;
let _IS_FIREFOX = false;
let _IS_SAFARI = false;
let _SUPPORT_TOUCH = false;
let _SUPPORT_POINTER = false;
let _SUPPORT_PASSIVE = false;
let _NO_FOREIGNOBJECT = false;
if (typeof navigator === 'object') {
const ua = navigator.userAgent;
_IS_MAC = ua.indexOf('Macintosh') >= 0;
_IS_IOS = !!ua.match(/(iPad|iPhone|iPod)/g);
_IS_WINDOWS = ua.indexOf('Windows') >= 0;
_IS_IE = ua.indexOf('MSIE') >= 0;
_IS_IE11 = !!ua.match(/Trident\/7\./);
_IS_EDGE = !!ua.match(/Edge\//);
_IS_NETSCAPE =
ua.indexOf('Mozilla/') >= 0 &&
ua.indexOf('MSIE') < 0 &&
ua.indexOf('Edge/') < 0;
_IS_CHROME = ua.indexOf('Chrome/') >= 0 && ua.indexOf('Edge/') < 0;
_IS_OPERA = ua.indexOf('Opera/') >= 0 || ua.indexOf('OPR/') >= 0;
_IS_FIREFOX = ua.indexOf('Firefox/') >= 0;
_IS_SAFARI =
ua.indexOf('AppleWebKit/') >= 0 &&
ua.indexOf('Chrome/') < 0 &&
ua.indexOf('Edge/') < 0;
if (typeof document === 'object') {
_NO_FOREIGNOBJECT =
!document.createElementNS ||
`${document.createElementNS('http://www.w3.org/2000/svg', 'foreignObject')}` !== '[object SVGForeignObjectElement]' ||
ua.indexOf('Opera/') >= 0;
}
}
if (typeof window === 'object') {
_IS_CHROME_APP =
window.chrome != null &&
window.chrome.app != null &&
window.chrome.app.runtime != null;
_SUPPORT_POINTER = window.PointerEvent != null && !_IS_MAC;
}
if (typeof document === 'object') {
_SUPPORT_TOUCH = 'ontouchstart' in document.documentElement;
try {
const options = Object.defineProperty({}, 'passive', {
get() {
_SUPPORT_PASSIVE = true;
},
});
const div = document.createElement('div');
if (div.addEventListener) {
div.addEventListener('click', () => { }, options);
}
}
catch (err) {
// pass
}
}
export const IS_MAC = _IS_MAC;
export const IS_IOS = _IS_IOS;
export const IS_WINDOWS = _IS_WINDOWS;
export const IS_IE = _IS_IE;
export const IS_IE11 = _IS_IE11;
export const IS_EDGE = _IS_EDGE;
/**
* A flag indicating whether the browser is Netscape (including Firefox).
*/
export const IS_NETSCAPE = _IS_NETSCAPE;
/**
* A flag indicating whether the the this is running inside a Chrome App.
*/
export const IS_CHROME_APP = _IS_CHROME_APP;
export const IS_CHROME = _IS_CHROME;
export const IS_OPERA = _IS_OPERA;
export const IS_FIREFOX = _IS_FIREFOX;
export const IS_SAFARI = _IS_SAFARI;
/**
* A flag indicating whether this device supports touchstart/-move/-end
* events (Apple iOS, Android, Chromebook and Chrome Browser on touch-enabled
* devices).
*/
export const SUPPORT_TOUCH = _SUPPORT_TOUCH;
/**
* A flag indicating whether this device supports Microsoft pointer events.
*/
export const SUPPORT_POINTER = _SUPPORT_POINTER;
export const SUPPORT_PASSIVE = _SUPPORT_PASSIVE;
/**
* A flag indicating whether foreignObject support is not available. This
* is the case for Opera, older SVG-based browsers and all versions of IE.
*/
export const NO_FOREIGNOBJECT = _NO_FOREIGNOBJECT;
export const SUPPORT_FOREIGNOBJECT = !NO_FOREIGNOBJECT;
export function getHMRStatus() {
const mod = window.module;
if (mod != null && mod.hot != null && mod.hot.status != null) {
return mod.hot.status();
}
return 'unkonwn';
}
export function isApplyingHMR() {
return getHMRStatus() === 'apply';
}
// This function checks if the specified event is supported by the browser.
// Source: http://perfectionkills.com/detecting-event-support-without-browser-sniffing/
const TAGNAMES = {
select: 'input',
change: 'input',
submit: 'form',
reset: 'form',
error: 'img',
load: 'img',
abort: 'img',
};
export function isEventSupported(event) {
const elem = document.createElement(TAGNAMES[event] || 'div');
const eventName = `on${event}`;
let isSupported = eventName in elem;
if (!isSupported) {
elem.setAttribute(eventName, 'return;');
isSupported = typeof elem[eventName] === 'function';
}
return isSupported;
}
//# sourceMappingURL=index.js.map