forked from cory/tildefriends
Cory McWilliams
d293637741
git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@3530 ed5197a5-7fde-0310-b194-c3ffbd925b24
137 lines
3.3 KiB
JavaScript
137 lines
3.3 KiB
JavaScript
"use strict";
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//! {"category": "libraries"}
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const kRpcSource = `
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class RPC {
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constructor() {
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this._functions = [];
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this.exports = null;
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this.sendCallback = null;
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}
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export(functions) {
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return this._send(["export", functions]);
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}
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_call(index) {
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return this._send(["call", index, Array.prototype.slice.call(arguments, 1)]);
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}
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_send(message) {
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var serialized = this._serialize(message);
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if (this.sendCallback) {
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return this.sendCallback(serialized);
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}
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return serialized;
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}
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deliver(message) {
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var deserialized = this._deserialize(message);
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if (deserialized[0] == "export") {
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this.exports = deserialized[1];
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} else if (deserialized[0] == "call") {
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var f = this._functions[deserialized[1]];
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f.apply(null, deserialized[2]);
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}
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}
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_deserialize(data) {
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var result = null;
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if (data[0] == "array") {
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result = new Array(data[1].length);
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for (var i = 0; i < data[1].length; i++) {
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result[i] = this._deserialize(data[1][i]);
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}
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} else if (data[0] == "object") {
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result = {};
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for (var i in data[1]) {
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result[i] = this._deserialize(data[1][i]);
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}
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} else if (data[0] == "number" || data[0] == "boolean" || data[0] == "string") {
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result = data[1];
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} else if (data[0] == "function") {
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result = this._call.bind(this, data[1]);
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}
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return result;
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}
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_serialize(data) {
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var result = null;
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if (Array.isArray(data)) {
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result = ["array", data.map(x => this._serialize(x, this.functions))];
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} else if (typeof data == "function") {
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var index = this._functions.indexOf(data);
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if (index == -1) {
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index = this._functions.length;
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this._functions.push(data);
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}
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result = ["function", index];
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} else if (typeof data == "object") {
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var fields = {};
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while (data) {
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var own = Object.getOwnPropertyNames(data);
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for (var i = 0; i < own.length; i++) {
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var name = own[i];
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if (name != "constructor") {
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var descriptor = Object.getOwnPropertyDescriptor(data, name);
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if (descriptor&& typeof descriptor.value == "function") {
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fields[name] = this._serialize(descriptor.value, this.functions);
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}
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}
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}
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if (data.__proto__ == Object.prototype) {
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break;
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}
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data = Object.getPrototypeOf(data);
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}
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result = ["object", fields];
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} else {
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result = [typeof data, data];
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}
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return result;
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}
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}`
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exports.iframe = function(options) {
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return new Promise(function(resolve, reject) {
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var iframeName = options.name || "iframe";
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var RPC = eval(kRpcSource);
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var rpc = new RPC();
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rpc.sendCallback = terminal.postMessageToIframe.bind(null, iframeName);
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core.register("onWindowMessage", function(message) {
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if (message.message == "ready") {
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resolve(rpc.exports);
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} else {
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rpc.deliver(message.message);
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}
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});
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terminal.split([{name: "terminal", type: "vertical"}]);
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terminal.print({
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iframe: `
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<!DOCTYPE html>
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<body style="background-color: #fff"></body>
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<script language="javascript">
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${kRpcSource}
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window.addEventListener("load", function() {
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parent.postMessage("ready", "*");
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});
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let rpc = new RPC();
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window.addEventListener("message", function(event) {
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rpc.deliver(event.data);
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});
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rpc.sendCallback = function(data) {
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parent.postMessage(data, "*");
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}
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${options.source}
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</script>
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`,
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name: iframeName,
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style: "flex: 1 1; " + options.style,
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width: null,
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height: null,
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});
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});
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} |