forked from square/cube
/
boards.js
58 lines (45 loc) · 1.23 KB
/
boards.js
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cube.boards = function(url) {
var socket,
interval;
var boardList = document.getElementById("boards");
function message(message) {
var data = JSON.parse(message.data);
switch(data.type) {
case "add": {
var board = data.board;
var id = board._id.toString(36);
var li = document.createElement("li");
var selection = d3.select(li)
.attr("class", "board-item");
var link = selection.append("a")
.text(id)
.attr("href", "http://" + document.location.host + "/" + id);
var count = selection.append("span")
.text(" (" + board.pieces.length + ")");
boardList.appendChild(selection.node());
}
}
}
function reopen() {
if (socket) {
socket.close();
}
socket = new WebSocket(url);
socket.onopen = load;
socket.onmessage = message;
if (!interval) interval = setInterval(ping, 5000);
}
function ping() {
if (socket.readyState == 1) {
socket.send(JSON.stringify({type: "ping"}));
} else if (socket.readyState > 1) {
reopen();
}
}
function load() {
if (socket && socket.readyState == 1) {
socket.send(JSON.stringify({type: "load"}));
}
}
reopen();
};