diff options
| -rw-r--r-- | readme.md | 9 | ||||
| -rw-r--r-- | ui/demo.html | 13 | ||||
| -rw-r--r-- | ui/js/api.js | 17 | ||||
| -rw-r--r-- | ui/js/main.js | 5 | ||||
| -rw-r--r-- | ui/js/socket.js | 19 |
5 files changed, 63 insertions, 0 deletions
@@ -0,0 +1,9 @@ +# tunnel challenge gedoe + +HMI software stack: + +- UI d.m.v. webpagina in vanilla HTML/CSS/JS +- Chromium in kiosk modus om de webpagina fullscreen te weergeven +- websocat om de TCP socket verbinding om te zetten in een WebSocket +- nginx om de webpagina te hosten + diff --git a/ui/demo.html b/ui/demo.html new file mode 100644 index 0000000..7ad4e6d --- /dev/null +++ b/ui/demo.html @@ -0,0 +1,13 @@ +<!DOCTYPE html> +<html lang="en"> +<head> + <meta charset="UTF-8"> + <title>demo page</title> + <script type="module" src="js/main.js"></script> +</head> +<body> + <div class="buttonlist"> + <button onclick="api.msg.send.helloWorld()">Hello World!</button> + </div> +</body> +</html> diff --git a/ui/js/api.js b/ui/js/api.js new file mode 100644 index 0000000..5fca3cf --- /dev/null +++ b/ui/js/api.js @@ -0,0 +1,17 @@ +import ws from './socket.js'; + +export default { + msg: { + send: { + helloWorld: () => { + ws.send(JSON.stringify({res: 'OK'})); + } + }, + handle: { + helloWorld: msg => { + console.log(msg); + }, + }, + }, +}; + diff --git a/ui/js/main.js b/ui/js/main.js new file mode 100644 index 0000000..033b0bb --- /dev/null +++ b/ui/js/main.js @@ -0,0 +1,5 @@ +import './socket.js'; + +import api from './api.js'; +window.api = api; // export api to inline JS handlers + diff --git a/ui/js/socket.js b/ui/js/socket.js new file mode 100644 index 0000000..46edb8d --- /dev/null +++ b/ui/js/socket.js @@ -0,0 +1,19 @@ +import api from './api.js'; + +var ws = new WebSocket('ws://localhost:8081/socket'); +export default ws; + +ws.onmessage = ev => { + // this will already throw an error if the message doesn't contain valid JSON + const msg = JSON.parse(ev.data); + + // check if api.msg.handle has a handler for msg.type + if (!api.msg.handle.hasOwnProperty(msg.type)) { + console.warn(`No message handler for type ${msg.type}`, msg); + return; + } + + // run the appropriate message handler + api.msg.handle[msg.type](msg); +}; + |