Notification.js by Andrew Dodson
此腳本不應該直接安裝，它是一個供其他腳本使用的函式庫。欲使用本函式庫，請在腳本 metadata 寫上： // @require https://update.gf.qytechs.cn/scripts/34465/225717/Notificationjs.js
// ==UserScript==
// @name Notification.js
// @version 1.1.1
// @description Notification.js by Andrew Dodson
// @author Andrew Dodson
// @grant none
// ==/UserScript==
/**
* Notification JS
* Shims up the Notification API
*
* @author Andrew Dodson
* @website http://adodson.com/notification.js/
*/
//
// Does the browser support the the Notification API?
// .. and does it have a permission property?
//
(function(window, document){
var PERMISSION_GRANTED = 'granted',
PERMISSION_DENIED = 'denied',
PERMISSION_UNKNOWN = 'unknown';
var a = [], iv, i=0;
//
// Swap the document.title with the notification
//
function swaptitle(title){
if(a.length===0){
a = [document.title];
}
a.push(title);
if(!iv){
iv = setInterval(function(){
// has document.title changed externally?
if(a.indexOf(document.title) === -1 ){
// update the default title
a[0] = document.title;
}
document.title = a[++i%a.length];
}, 1000);
}
}
function swapTitleCancel(){
// dont do any more if we haven't got anything open
if(a.length===0){
return;
}
// if an IE overlay is present, kill it
if("external" in window && "msSiteModeClearIconOverlay" in window.external ){
window.external.msSiteModeClearIconOverlay();
}
clearInterval(iv);
iv = false;
document.title = a[0];
a = [];
}
//
// Add aevent handlers
function addEvent(el,name,func){
if(name.match(" ")){
var a = name.split(' ');
for(var i=0;i<a.length;i++){
addEvent( el, a[i], func);
}
}
if(el.addEventListener){
el.removeEventListener(name, func, false);
el.addEventListener(name, func, false);
}
else {
el.detachEvent('on'+name, func);
el.attachEvent('on'+name, func);
}
}
function check_permission(){
// Check whether the current desktop supports notifications and if they are authorised,
// PERMISSION_GRANTED (yes they are supported and permission is granted),
// PERMISSION_DENIED (yes they are supported, permission has not been granted),
// -1 (Notifications are not supported)
// IE9
if(("external" in window) && ("msIsSiteMode" in window.external)){
return window.external.msIsSiteMode()? PERMISSION_GRANTED : PERMISSION_UNKNOWN;
}
else if("webkitNotifications" in window){
return window.webkitNotifications.checkPermission() === 0 ? PERMISSION_GRANTED : PERMISSION_DENIED;
}
else if("mozNotification" in window.navigator){
return PERMISSION_GRANTED;
}
else {
return PERMISSION_UNKNOWN;
}
}
function update_permission(){
// Define the current state
window.Notification.permission = check_permission();
return window.Notification.permission;
}
if(!Object(window.Notification).permission){
//
// Bind event handlers to the body
addEvent(window, "focus scroll click", swapTitleCancel);
// Assign it.
window.Notification = function(message, options){
// ensure this is an instance
if(!(this instanceof window.Notification)){
return new window.Notification(message,options);
}
var n, self = this;
//
options = options || {};
this.body = options.body || '';
this.icon = options.icon || '';
this.lang = options.lang || '';
this.tag = options.tag || '';
this.close = function(){
// remove swapTitle
swapTitleCancel();
// Close
if(Object(n).close){
n.close();
}
self.onclose();
};
this.onclick = function(){};
this.onclose = function(){};
//
// Swap document.title
//
swaptitle(message);
//
// Create Desktop Notifications
//
if(("external" in window) && ("msIsSiteMode" in window.external)){
if(window.external.msIsSiteMode()){
window.external.msSiteModeActivate();
if(this.icon){
window.external.msSiteModeSetIconOverlay(this.icon, message);
}
}
}
else if("webkitNotifications" in window){
if(window.webkitNotifications.checkPermission() === 0){
n = window.webkitNotifications.createNotification(this.icon, message, this.body );
n.show();
n.onclick = function(){
// Fire any user bound events to the onclick function
self.onclick();
// redirect the user back to the page
window.focus();
setTimeout( function(){ n.cancel(); }, 1000);
};
}
}
else if( "mozNotification" in window.navigator ){
var m = window.navigator.mozNotification.createNotification( message, this.body, this.icon );
m.show();
}
};
window.Notification.requestPermission = function(cb){
// Setup
// triggers the authentication to create a notification
cb = cb || function(){};
// IE9
if(("external" in window) && ("msIsSiteMode" in window.external)){
try{
if( !window.external.msIsSiteMode() ){
window.external.msAddSiteMode();
cb( PERMISSION_UNKNOWN );
}
}
catch(e){}
cb( update_permission() );
}
else if("webkitNotifications" in window){
window.webkitNotifications.requestPermission(function(){
cb( update_permission() );
});
}
else {
cb( update_permission() );
}
};
// Get the current permission
update_permission();
}
})(window, document);