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toppage_handler.erl
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toppage_handler.erl
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%% Feel free to use, reuse and abuse the code in this file.
%% @doc Main page of the clock application.
-module(toppage_handler).
-export([init/3]).
-export([handle/2]).
-export([terminate/3]).
init(_Transport, Req, []) ->
{ok, Req, undefined}.
handle(Req, State) ->
Body = <<"
<!DOCTYPE html>
<html lang=\"en\">
<head>
<meta charset=\"utf-8\">
<title>Bullet Clock</title>
</head>
<body>
<p><input type=\"checkbox\" checked=\"yes\" id=\"enable_best\"></input>
Current time (best source): <span id=\"time_best\">unknown</span>
<span></span><span id=\"status_best\">unknown</span>
<button id=\"send_best\">Send Time</button></p>
<p><input type=\"checkbox\" checked=\"yes\" id=\"enable_websocket\"></input>
Current time (websocket only): <span id=\"time_websocket\">unknown</span>
<span></span><span id=\"status_websocket\">unknown</span>
<button id=\"send_websocket\">Send Time</button></p>
<p><input type=\"checkbox\" checked=\"yes\" id=\"enable_eventsource\"></input>
Current time (eventsource only): <span id=\"time_eventsource\">unknown</span>
<span></span><span id=\"status_eventsource\">unknown</span>
<button id=\"send_eventsource\">Send Time</button></p>
<p><input type=\"checkbox\" checked=\"yes\" id=\"enable_polling\"></input>
Current time (polling only): <span id=\"time_polling\">unknown</span>
<span></span><span id=\"status_polling\">unknown</span>
<button id=\"send_polling\">Send Time</button></p>
<script
src=\"http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js\">
</script>
<script src=\"/static/bullet.js\"></script>
<script type=\"text/javascript\">
// <![CDATA[
$(document).ready(function(){
var start = function(name, options) {
var bullet;
var open = function(){
bullet = $.bullet('ws://localhost:8080/bullet', options);
bullet.onopen = function(){
$('#status_' + name).text('online');
};
bullet.onclose = bullet.ondisconnect = function(){
$('#status_' + name).text('offline');
};
bullet.onmessage = function(e){
if (e.data != 'pong'){
$('#time_' + name).text(e.data);
}
};
bullet.onheartbeat = function(){
console.log('ping: ' + name);
bullet.send('ping: ' + name);
};
}
open();
$('#enable_' + name).on('change', function(){
if (this.checked){
open();
} else{
bullet.close();
bullet = null;
}
});
$('#send_' + name).on('click', function(){
if (bullet) {
bullet.send('time: ' + name + ' '
+ $('#time_' + name).text());
}
});
};
start('best', {});
start('websocket', {'disableEventSource': true,
'disableXHRPolling': true});
start('eventsource', {'disableWebSocket': true,
'disableXHRPolling': true});
start('polling', {'disableWebSocket': true,
'disableEventSource': true});
});
// ]]>
</script>
</body>
</html>
">>,
{ok, Req2} = cowboy_req:reply(200, [{<<"content-type">>, <<"text/html">>}],
Body, Req),
{ok, Req2, State}.
terminate(_Reason, _Req, _State) ->
ok.