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ws.js
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ws.js
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(function(window) {
var fromMessage = function(message) {
return {client: message[0],
command: message[1],
data: message[2]};
};
var toMessage = function(prev, command, data) {
return [prev.client,
command,
data];
};
var cache = [];
function replacer(key, value) {
if(cache.length > 20) {
return;
}
if(window.jQuery && value instanceof jQuery) {
return "[jQuery $(" + value.selector + ")]";
}
if(value instanceof Element) {
return "[Element " + value.tagName.toLowerCase() + (value.id != "" ? "#" : "") + value.id + "]";
}
if(typeof(value) == "object") {
if(cache.indexOf(value) > -1) {
return "circular";
}
cache.push(value);
return value;
}
if(typeof value == "function") {
return "[function]";
}
return value;
}
function safeStringify(res) {
cache = [];
return JSON.stringify(res, replacer);
}
var thisScript = document.getElementById("lt_ws");
var useXhr = thisScript.hasAttribute("data-xhr-src");
var src = useXhr ? thisScript.getAttribute("data-xhr-src") : thisScript.src;
var parts = src.split(":");
if(parts.length > 2) {
var host = parts[0]+":"+parts[1];
var port = parts[2].split("/")[0];
} else {
var host = parts[0];
var port = parts[1].split("/")[0];
}
function init() {
var socket = io.connect(host + ':' + port);
socket.on("connect", function() {
socket.emit("init", {name: window.location.host || window.title || window.location.href,
types: ["js","css","html"],
commands: ["editor.eval.js",
"editor.eval.cljs.exec",
"editor.eval.html",
"editor.eval.css"]});
});
socket.on('client.close', function(message) {
socket.disconnect();
});
socket.on('editor.eval.css', function (message) {
var prev = fromMessage(message);
var name = prev.data.name.replace(".", "-");
var existing = document.querySelector("#" + name);
if(existing) {
existing.parentNode.removeChild(existing);
}
var neue = document.createElement("style");
neue.id = name;
neue.type = "text/css";
neue.innerHTML = prev.data.code;
document.head.appendChild(neue);
socket.emit("result", toMessage(prev, "editor.eval.css.result", {result: name}));
});
socket.on('editor.eval.html', function (message) {
var prev = fromMessage(message);
socket.emit("result", toMessage(prev, "editor.eval.html.success", null));
document.location.reload(true);
});
socket.on('editor.eval.js', function (message) {
var prev = fromMessage(message);
try {
var res = eval.call(window, prev.data.code);
socket.emit("result", toMessage(prev,"editor.eval.js.result", {result: safeStringify(res), meta: prev.data.meta, "no-inspect": true}));
} catch (e) {
var ex = e.toString();
if(e.stack) {
ex = e.stack;
}
socket.emit("result", toMessage(prev, "editor.eval.js.exception", {ex: ex, meta: prev.data.meta}));
}
});
socket.on('editor.eval.cljs.exec', function (message) {
var prev = fromMessage(message);
for(var i = 0; i < prev.data.results.length; i++) {
var data = prev.data.results[i];
var meta = prev.data.results[i].meta;
meta.verbatim = true;
try {
var res = eval.call(window, prev.data.results[i].code);
socket.emit("result", toMessage(prev, "editor.eval.cljs.result", {result: cljs.core.pr_str(res), meta: meta}));
} catch (e) {
var exdata = cljs.core.ex_data(e);
var error = "";
if (exdata) {
error = e.message + ": " + cljs.core.pr_str(exdata);
} else {
error = cljs.core.pr_str(e);
}
if(e.stack) {
error += "\n" + e.stack;
}
socket.emit("result", toMessage(prev, "editor.eval.cljs.exception", {ex: error, meta: meta}));
}
}
});
window.lttools = {
watch: function(exp, meta) {
if(meta.ev == "editor.eval.cljs.watch") {
var final = cljs.core.pr_str(exp);
} else {
meta["no-inspect"] = true;
var final = safeStringify(exp);
}
socket.emit("result", toMessage({}, "clients.raise-on-object", [meta.obj, meta.ev, {result: final, meta: meta}]))
return exp;
}
};
}
function addScript(args, callbackfunction) {
var isDone = false;
var done = function () {
if (!isDone) {
isDone = true;
callbackfunction();
}
};
var oHead = document.getElementsByTagName('head')[0];
var oScript = document.createElement('script');
if (args.srcUrl) {
oScript.setAttribute('src',args.srcUrl);
} else {
oScript.textContent = args.code;
}
oScript.setAttribute('type','text/javascript');
var loadFunction = function() {
if (this.readyState == 'complete' || this.readyState == 'loaded') {
done();
}
};
oScript.onreadystatechange = loadFunction;
oScript.onload = done;
oHead.appendChild(oScript);
}
function loadScriptWithSrc(sScriptSrc,callbackfunction) {
addScript({ srcUrl: sScriptSrc }, callbackfunction);
}
function loadScriptWithXhr(sScriptSrc,callbackfunction) {
var request = new XMLHttpRequest();
var loadFunction = function () {
if (request.readyState === 4) {
request.onreadystatechange = null;
addScript({ code: request.responseText }, callbackfunction);
}
};
request.onreadystatechange = loadFunction;
request.open("get", sScriptSrc, true);
request.send();
}
var loadScript = useXhr ? loadScriptWithXhr : loadScriptWithSrc;
if(window.io) {
init();
} else {
loadScript(host + ":" + port + "/socket.io/socket.io.js", init);
}
})(window);