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keysocket-t61.js
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keysocket-t61.js
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var PREV = 20;
var PLAY = 16;
var NEXT = 19;
function simulateClick(elementId) {
var evt = document.createEvent('MouseEvents');
evt.initMouseEvent('click', true, false, document, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
document.getElementById(elementId).dispatchEvent(evt);
}
function isVisible(elementId) {
return document.getElementById(elementId).style.display !== 'none';
}
var connection = null;
var isConnected = false;
function connect() {
// Connect to a websocket server
connection = new WebSocket('ws://localhost:1337/');
// When the connection is open, send some data to the server
connection.onopen = function() {
console.log('WS open');
isConnected = true;
connection.send('Ping'); // Send the message 'Ping' to the server
// Log errors
connection.onerror = function(error) {
console.log('WS error', error);
};
// Log messages from the server
connection.onmessage = function(e) {
console.log('WS message', e);
var key = e.data;
if (key == PREV) {
// Play the previous song
simulateClick('large_previous_song_button');
} else if (key == NEXT) {
// Play the next song.
simulateClick('large_next_song_button');
} else if (key == PLAY) {
// Toggle between play and pause.
if (isVisible('pause_button')) {
simulateClick('pause_button');
} else {
simulateClick('play_button');
}
}
};
connection.onclose = function(e) {
console.log('WS close', e);
isConnected = false;
reconnect();
};
};
}
function reconnect() {
// If we're not connected,
if (!isConnected) {
// Attempt to connect.
connect();
// Then ensure we're connected.
setTimeout(reconnect, 1000);
}
}
reconnect();