Add setting for clipboard

app/ui.js

@@ -383,6 +383,8 @@ var UI = {
         UI.addSettingChangeHandler('encrypt');
         UI.addSettingChangeHandler('cursor');
         UI.addSettingChangeHandler('cursor', UI.updateLocalCursor);
+        UI.addSettingChangeHandler('clipboard');
+        UI.addSettingChangeHandler('clipboard', UI.updateClipboard);
         UI.addSettingChangeHandler('resize');
         UI.addSettingChangeHandler('resize', UI.enableDisableViewClip);
         UI.addSettingChangeHandler('resize', UI.applyResizeMode);
@@ -1002,23 +1004,43 @@ var UI = {
     },
 
     clipboardReceive: function(rfb, text) {
+        if (!UI.getSetting('clipboard')) return;
+
         Log.Debug(">> UI.clipboardReceive: " + text.substr(0,40) + "...");
         document.getElementById('noVNC_clipboard_text').value = text;
         Log.Debug("<< UI.clipboardReceive");
     },
 
     clipboardClear: function() {
+        if (!UI.getSetting('clipboard')) return;
+
         document.getElementById('noVNC_clipboard_text').value = "";
         UI.rfb.clipboardPasteFrom("");
     },
 
     clipboardSend: function() {
+        if (!UI.getSetting('clipboard')) return;
+
         var text = document.getElementById('noVNC_clipboard_text').value;
         Log.Debug(">> UI.clipboardSend: " + text.substr(0,40) + "...");
         UI.rfb.clipboardPasteFrom(text);
         Log.Debug("<< UI.clipboardSend");
     },
 
+    updateClipboard: function() {
+        if (!UI.rfb) return;
+
+        var clipboard_enabled = UI.getSetting('clipboard');
+        var clipboard_button = document.getElementById('noVNC_clipboard_button');
+        if (clipboard_enabled) {
+            clipboard_button.disabled = false;
+            UI.rfb.set_clipboard(true);
+        } else {
+            clipboard_button.disabled = true;
+            UI.rfb.set_clipboard(false);
+        }
+    },
+
 /* ------^-------
  *  /CLIPBOARD
  * ==============

core/rfb.js

@@ -151,6 +151,7 @@ export default function RFB(defaults) {
         'encrypt': false,                       // Use TLS/SSL/wss encryption
         'local_cursor': false,                  // Request locally rendered cursor
         'shared': true,                         // Request shared mode
+        'clipboard': true,                      // Synchronize server and client clipboard contents
         'view_only': false,                     // Disable client mouse/keyboard
         'xvp_password_sep': '@',                // Separator for XVP password fields
         'disconnectTimeout': 3,                 // Time (s) to wait for disconnection
@@ -356,7 +357,12 @@ RFB.prototype = {
     },
 
     clipboardPasteFrom: function (text) {
-        if (this._rfb_connection_state !== 'connected' || this._view_only) { return; }
+        if (this._rfb_connection_state !== 'connected' ||
+            this._view_only ||
+            !this._clipboard) {
+
+            return;
+        }
         RFB.messages.clientCutText(this._sock, text);
     },
 
@@ -1167,7 +1173,7 @@ RFB.prototype = {
 
         var text = this._sock.rQshiftStr(length);
 
-        if (this._view_only) { return true; }
+        if (this._view_only || !this._clipboard) { return true; }
 
         this._onClipboard(this, text);
 
@@ -1426,6 +1432,7 @@ make_properties(RFB, [
     ['encrypt', 'rw', 'bool'],              // Use TLS/SSL/wss encryption
     ['local_cursor', 'rw', 'bool'],         // Request locally rendered cursor
     ['shared', 'rw', 'bool'],               // Request shared mode
+    ['clipboard', 'rw', 'bool'],            // Synchronize server and client clipboard contents
     ['view_only', 'rw', 'bool'],            // Disable client mouse/keyboard
     ['xvp_password_sep', 'rw', 'str'],      // Separator for XVP password fields
     ['disconnectTimeout', 'rw', 'int'],     // Time (s) to wait for disconnection

vnc.html

@@ -204,6 +204,9 @@
                     <li>
                         <label><input id="noVNC_setting_view_only" type="checkbox" /> View Only</label>
                     </li>
+                    <li>
+                        <label><input id="noVNC_setting_clipboard" type="checkbox" /> Clipboard</label>
+                    </li>
                     <li><hr></li>
                     <li>
                         <label><input id="noVNC_setting_view_clip" type="checkbox" /> Clip to Window</label>