Initial public release.

src/websocket.js

@@ -0,0 +1,92 @@
+// Copyright 2020 Thomas Hintz
+//
+// This file is part of the Alpha Centauri Farming project.
+//
+// The Alpha Centauri Farming project is free software: you can
+// redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either
+// version 3 of the License, or (at your option) any later version.
+//
+// The Alpha Centauri Farming project is distributed in the hope that
+// it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+// PURPOSE.  See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with the Alpha Centauri Farming project.  If not, see
+// <https://www.gnu.org/licenses/>.
+
+export { sendCommand, setMainOnMessage, setSecondaryOnMessage,
+         setMainOnOpen, openMain, openSecondary,
+         closeMain, closeSecondary }
+
+class WebSocketConnection {
+    location = '';
+    reopen = true;
+    ws = null;
+
+    constructor(location) {
+        this.location = location;
+        const loc = window.location;
+        let uri = '';
+        if (loc.protocol === "https:") {
+            uri = "wss:";
+        } else {
+            uri = "ws:";
+        }
+        uri += "//" + loc.host;
+        this.ws = new WebSocket(uri + '/websocket/' + location);
+    }
+
+    close() {
+        this.reopen = false;
+        this.ws.close();
+    }
+
+    sendCommand(cmd) {
+        this.ws.send(JSON.stringify(cmd));
+    }
+
+    onmessage(proc) {
+        this.ws.onmessage = proc;
+    }
+
+    onopen(proc) {
+        this.ws.onopen = proc;
+    }
+}
+
+var ws;
+var ws2;
+
+function openMain(location) {
+    ws = new WebSocketConnection(location);
+}
+
+function openSecondary(location) {
+    ws2 = new WebSocketConnection(location);
+}
+
+function closeMain() {
+    ws.close();
+}
+
+function closeSecondary() {
+    ws2.close();
+}
+
+function sendCommand(cmd) {
+    ws.sendCommand(cmd);
+}
+
+function setMainOnMessage(proc) {
+    ws.onmessage(proc);
+}
+
+function setSecondaryOnMessage(proc) {
+    ws2.onmessage(proc);
+}
+
+function setMainOnOpen(proc) {
+    ws.onopen(proc);
+}