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DC_auto_refresh

Refresh the window if no network activity for a while.

当前为 2015-07-18 提交的版本，查看 最新版本。

// ==UserScript==
// @name		DC_auto_refresh
// @author		Ladoria
// @version		0.9
// @grant       none
// @description	Refresh the window if no network activity for a while.
// @match		http://www.dreadcast.net/Main
// @copyright	2015+, Ladoria
// @namespace InGame
// ==/UserScript==

var reload_asked = new Date();
var request_attempts = 0;
var attempts_limit = 3;
var refresh_time_limit = 120000; // In ms. Time limit to refresh again.
var abort_time_fixed = refresh_time_limit / 1000;
var abort_time = abort_time_fixed;
var workingInterval = undefined;
var pause_script = false;

var alert_messages = new Array()
alert_messages.ask_to_reload = 'Attention, vous semblez avoir été déconnecté. Rechargement de la page dans <span class="seconds"></span> seconde(s) <br><div class="btnTxt abort"><div>Annuler</div></div>&nbsp;&nbsp;<div class="btnTxt reload"><div>Recharger</div></div>';
alert_messages.unconnected = 'Attention, vous semblez toujours déconnecté.'
alert_messages.connected = '<span class="ok_message">Vous semblez avoir été reconnecté.</span>&nbsp;&nbsp;<div class="btnTxt hide"><div>OK</div></div>'

$(document).ready( function() {
	$('head').append('<style>#auto_refresh  {display: none;position: absolute;top: 31px;width: 100%;z-index:1000000;text-align: center;}#auto_refresh .alert  {display: inline-block;padding: 5px;color: red;background-color: white;text-align: center;font-size: 20px;position: relative;}#auto_refresh .alert .abort, #auto_refresh .alert .reload, #auto_refresh .alert .hide  {display: inline-block;margin-top: 10px;width: 100px;}#auto_refresh .ok_message{color: green;}</style>');
	$("body").append('<div id="auto_refresh"><div class="alert fakeToolTip"></div></div>');
	
	function show_alert(message) {
		$('#auto_refresh .alert').html(alert_messages[message]);
		
		if('ask_to_reload' == message) {
			abort_time = abort_time_fixed;
			
			$('#auto_refresh .seconds').html(abort_time);
			refresh_abort_time();
			
			// Abort reload
			// User want to abort, then notify user and pause script
			$('#auto_refresh .abort').on('click', function() {				
				abort_reload();
		
				pause_script = true;
				
				show_alert('unconnected');
			});
			
			// Do reload
			$('#auto_refresh .reload').on('click', function() {
				do_reload();
			});
		}
		else if ('connected' == message) {
			// hide alert
			$('#auto_refresh .hide').on('click', function() {
				hide_alert();
			});
		}
		
		$('#auto_refresh').show();
	}
	
	function hide_alert() {
		$('#auto_refresh').hide();
	}
	
	function refresh_abort_time() {
		$('#auto_refresh .seconds').html(abort_time);
		
		workingInterval = setInterval( function() {
			if(0 < abort_time)
				abort_time--;
			
			$('#auto_refresh .seconds').html(abort_time);
		}, 1000);
	}
	
	// Stop countdown
	function abort_reload() {
		clearInterval(workingInterval);
		
		request_attempts = 0;
	}
	
	// Reload window
	function do_reload() {
		// Useless, but lovely
		last_refresh = new Date();
		request_attempts = 0;
		
		window.location.reload();
	}

	// Countdown to reload window
	setInterval(function() {
		if(true == pause_script) return;
	
		var date_now = new Date().getTime();
		
		// If no network activity for a while, reload.
		if (request_attempts >= attempts_limit) {
			// If no yes/no alert visible, show it
			if(0 == $('#auto_refresh .abort').length) {
				show_alert('ask_to_reload');
				
				// Delay to refresh
				reload_asked = new Date();
			}
				
			// If reload failed, waiting for a while and after delay to refresh
			if (date_now - reload_asked.getTime() >= refresh_time_limit) {
				
				do_reload();
			}
		}
	}, 1000);
	
	// Update request attempt number
	$(document).ajaxComplete( function(a,b,c) {
		if(/Check/.test(c.url)) {
			// If request succeeded
			if(b.readyState == 4) {
				// If reconnected after lost connexion
				// If connected again, resume script and notify
				if(attempts_limit <= request_attempts || true == pause_script) {
					pause_script = false;
					show_alert('connected');
					
					abort_reload();
				}
					
				request_attempts = 0;
			}
			else
				request_attempts++;
		}
	});
});
console.log('DC - Auto Refresh started');