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nntpchan/contrib/js/livechan.js
2016-04-27 14:21:12 +02:00

67 lines
1.6 KiB
JavaScript

function livechan_got_post(widget, j) {
// do scroll
while (widget.children.length > 5) {
// remove top element
widget.removeChild(widget.children[0]);
}
nntpchan_buildpost(widget, j);
// scroll to bottom
widget.scrollTop = widget.scrollHeight;
}
// inject post form into an element
function inject_postform(prefix, parent) {
}
// inject livechan widget into parent
function inject_livechan_widget(prefix, parent) {
if ( "WebSocket" in window ) {
var url = "ws://"+document.location.host+prefix+"live";
if ( document.location.protocol == "https:" ) {
url = "wss://"+document.location.host+prefix+"live";
}
var socket = new WebSocket(url);
var progress = function(str) {
parent.innerHTML = "<pre>livechan: "+str+"</pre>";
};
progress("initialize");
socket.onopen = function () {
progress("streaming (read only)");
}
socket.onmessage = function(ev) {
var j = null;
try {
j = JSON.parse(ev.data);
} catch(e) {
// ignore
}
if (j) {
console.log(j);
livechan_got_post(parent, j);
}
}
socket.onclose = function(ev) {
progress("connection closed");
setTimeout(function() {
inject_livechan_widget(prefix, parent);
}, 1000);
}
} else {
parent.innerHTML = "<pre>livechan mode requires websocket support</pre>";
setTimeout(function() {
parent.innerHTML = "";
}, 5000);
}
}
function ukko_livechan(prefix) {
var ukko = document.getElementById("ukko_threads");
if (ukko) {
// remove children
ukko.innerHTML = "";
inject_livechan_widget(prefix, ukko);
}
}