Hide QR code on second click

1 files changed, 16 insertions, 12 deletions

diff --git a/html/whiteboard.js b/html/whiteboard.js
index 379c757..50b0058 100644
--- a/html/whiteboard.js
+++ b/html/whiteboard.js
@@ -214,7 +214,7 @@ function init_board() {
 	//board.addEventListener("selectionchange", function() {on_selectionchange(); });
 
         document.getElementById("qrwindow").onclick = function() {
-         hideQRWindow();
+          hideQRWindow();
         }
 
         document.onkeydown = function(evt) {
@@ -328,20 +328,24 @@ function textAreaSetPos(id, pos)
 // HTML button
 function on_qrcode_click()
 {
-	var parser = new DOMParser();
-	var xmlDocument = parser.parseFromString("<request></request>", "text/xml");
-	
-	var requestElement = xmlDocument.getElementsByTagName("request")[0];
+  if (document.getElementById("qrwindow").style.display == "block") {
+    hideQRWindow();
+  } else {
+    var parser = new DOMParser();
+    var xmlDocument = parser.parseFromString("<request></request>", "text/xml");
 
-	var commandElement = xmlDocument.createElement("command");
-	commandElement.appendChild(document.createTextNode("qrcode"));
-	requestElement.appendChild(commandElement);
+    var requestElement = xmlDocument.getElementsByTagName("request")[0];
 
-	var idElement = xmlDocument.createElement("url");
-	idElement.appendChild(document.createTextNode(document.location));
-	requestElement.appendChild(idElement);
+    var commandElement = xmlDocument.createElement("command");
+    commandElement.appendChild(document.createTextNode("qrcode"));
+    requestElement.appendChild(commandElement);
 
-	websocket.send(new XMLSerializer().serializeToString(xmlDocument));
+    var idElement = xmlDocument.createElement("url");
+    idElement.appendChild(document.createTextNode(document.location));
+    requestElement.appendChild(idElement);
+
+    websocket.send(new XMLSerializer().serializeToString(xmlDocument));
+  }
 }
 
 function on_pdf_click()