From a61c702d91d7444ce0bb094ddccc70f72416500b Mon Sep 17 00:00:00 2001
From: Roland Reichwein <mail@reichwein.it>
Date: Sat, 28 Jan 2023 15:07:14 +0100
Subject: Added WebAssembly for C++ implementation of Diff

---
 html/whiteboard.js | 25 +++++++++++++++++++++----
 1 file changed, 21 insertions(+), 4 deletions(-)

(limited to 'html/whiteboard.js')

diff --git a/html/whiteboard.js b/html/whiteboard.js
index 83601b8..aef4391 100644
--- a/html/whiteboard.js
+++ b/html/whiteboard.js
@@ -8,6 +8,17 @@ var revision;
 // helper for breaking feedback loop
 var caretpos = 0;
 
+function set_status(message)
+{
+ if (message == "") {
+	document.getElementById("status").textContent = message;
+	document.getElementById("status").style.display = 'block';
+ } else {
+	document.getElementById("status").textContent = "";
+	document.getElementById("status").style.display = 'none';
+ }
+}
+
 function showQRWindow()
 {
  document.getElementById("qrwindow").style.display = 'block';
@@ -103,7 +114,7 @@ function handleSelection() {
 
 function connect_websocket() {
 	document.getElementById("reconnect").style.display = 'none';
-	document.getElementById("connecting").style.display = 'block';
+        set_status("Connecting...");
 	var newlocation = location.origin + location.pathname;
 	newlocation = newlocation.replace(/^http/, 'ws');
 	if (newlocation.slice(-1) != "/")
@@ -123,7 +134,7 @@ function connect_websocket() {
 
 		websocket.send("<request><command>getversion</command></request>");
 		websocket.send("<request><command>getfile</command><id>" + get_id() + "</id></request>");
-		document.getElementById("connecting").style.display = 'none';
+                set_status(""); // ok
 	};
 	
 	websocket.onclose = function(e) {
@@ -135,15 +146,21 @@ function connect_websocket() {
 		alert("Error: Server connection closed.");
 		document.getElementById("reconnect").style.display = 'inline';
 	};
-
 }
 
+// button in html
 function on_reconnect_click() {
 	connect_websocket();
 }
 
 function init_board() {
-	connect_websocket();
+        set_status("Loading...");
+	Module.onRuntimeInitialized = () => {
+         connect_websocket();
+        };
+	//Module.onRuntimeInitialized = () => { alert("DEBUG: " + Module._getnum(1) + " " + UTF8ToString(Module._getstring(allocateUTF8("abc"))));
+		//_free(allocateUTF8("abc"));
+	//};
 	
 	var board = document.getElementById("board");
 	board.addEventListener("input", function() {on_input(); });
-- 
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