Handle slightly older versions of Firefox.

mdboom · mdboom · commit 914e525e4276 · 2013-01-04T15:30:12.000-05:00
diff --git a/lib/matplotlib/backends/web_static/mpl.js b/lib/matplotlib/backends/web_static/mpl.js
@@ -12,15 +12,18 @@ function ws_url(path) {
 }
 
 window.onload = function() {
-    if (!("WebSocket" in window)) {
-        alert("WebSocket not supported");
-        return;
-    }
+    if (typeof(WebSocket) !== 'undefined') {
+        this.WebSocket = WebSocket;
+    } else if (typeof(MozWebSocket) !== 'undefined') {
+        this.WebSocket = MozWebSocket;
+    } else {
+        alert('Your browser does not have WebSocket support, please try Chrome, Safari or Firefox ≥ 6. Firefox 4 and 5 are also supported by you have to enable WebSockets in about:config.');
+    };
 
     var message = document.getElementById("mpl-message");
     var canvas = document.getElementById("mpl-canvas");
 
-    ws = new WebSocket(ws_url("ws"));
+    ws = new this.WebSocket(ws_url("ws"));
     ws.onmessage = function (evt) {
         if (evt.data instanceof Blob) {
             /* FIXME: We get "Resource interpreted as Image but
