remove codio clipboard methods

Author: mloginov

app/ui.js

@@ -344,8 +344,6 @@ const UI = {
             .addEventListener('click', UI.toggleClipboardPanel);
         document.getElementById("noVNC_clipboard_text")
             .addEventListener('change', UI.clipboardSend);
-        document.getElementById("noVNC_clipboard_text")
-            .addEventListener('input', UI.syncClipboardPanelToLocalClipboard);
     },
 
     // Add a call to save settings when the element changes,
@@ -975,52 +973,7 @@ const UI = {
  * ==============
  *   CLIPBOARD
  * ------v------*/
-    // Read and write text to local clipboard is currently only supported in Chrome 66+ and Opera53+
-    // further information at https://developer.mozilla.org/en-US/docs/Web/API/Clipboard
-
-    writeLocalClipboard(text) {
-        Log.Debug(">> UI.writeLocalClipboard: " + text.substr(0, 40) + "...");
-        if (typeof navigator.clipboard !== "undefined" && typeof navigator.clipboard.writeText !== "undefined" &&
-          typeof navigator.permissions !== "undefined" && typeof navigator.permissions.query !== "undefined"
-        ) {
-            navigator.permissions.query({name: 'clipboard-write'})
-                .then(() => navigator.clipboard.writeText(text))
-                .then(() => {
-                    const debugMessage = text.substring(0, 40) + "...";
-                    Log.Debug('>> UI.setClipboardText: navigator.clipboard.writeText with ' + debugMessage);
-                })
-                .catch((err) => {
-                    if (err.name !== 'TypeError') {
-                        Log.Error(">> UI.setClipboardText: Failed to write system clipboard (trying to copy from NoVNC clipboard)");
-                    }
-                });
-        }
-        Log.Debug("<< UI.writeLocalClipboard");
-    },
-
-    readLocalClipboard() {
-        Log.Debug(">> UI.readLocalClipboard");
-        // navigator.clipboard and navigator.clipbaord.readText is not available in all browsers
-        if (typeof navigator.clipboard !== "undefined" && typeof navigator.clipboard.readText !== "undefined" &&
-          typeof navigator.permissions !== "undefined" && typeof navigator.permissions.query !== "undefined"
-        ) {
-            navigator.permissions.query({name: 'clipboard-read'})
-                .then(() => navigator.clipboard.readText())
-                .then((clipboardText) => {
-                    const text = document.getElementById('noVNC_clipboard_text').value;
-                    if (clipboardText !== text) {
-                        document.getElementById('noVNC_clipboard_text').value = clipboardText;
-                        UI.clipboardSend();
-                    }
-                })
-                .catch((err) => {
-                    if (err.name !== 'TypeError') {
-                        Log.Warn("<< UI.readLocalClipboard: Failed to read system clipboard-: " + err);
-                    }
-                });
-        }
-        Log.Debug("<< UI.readLocalClipboard");
-    },
+
     openClipboardPanel() {
         UI.closeAllPanels();
         UI.openControlbar();
@@ -1050,7 +1003,6 @@ const UI = {
     clipboardReceive(e) {
         Log.Debug(">> UI.clipboardReceive: " + e.detail.text.substr(0, 40) + "...");
         document.getElementById('noVNC_clipboard_text').value = e.detail.text;
-        UI.writeLocalClipboard(e.detail.text);
         Log.Debug("<< UI.clipboardReceive");
     },
 
@@ -1060,12 +1012,6 @@ const UI = {
         UI.rfb.clipboardPasteFrom(text);
         Log.Debug("<< UI.clipboardSend");
     },
-    syncClipboardPanelToLocalClipboard() {
-        // Reads text from clipboard panel and set it to local clipboard
-        // Mainly used to synchronize clipboard panel with local clipboard
-        const text = document.getElementById('noVNC_clipboard_text').value;
-        UI.writeLocalClipboard(text);
-    },
 
 /* ------^-------
  *  /CLIPBOARD
@@ -1157,7 +1103,6 @@ const UI = {
         UI.rfb.addEventListener("clippingviewport", UI.updateViewDrag);
         UI.rfb.addEventListener("capabilities", UI.updatePowerButton);
         UI.rfb.addEventListener("clipboard", UI.clipboardReceive);
-        UI.rfb.onCanvasFocus = UI.readLocalClipboard;
         UI.rfb.addEventListener("bell", UI.bell);
         UI.rfb.addEventListener("desktopname", UI.updateDesktopName);
         UI.rfb.clipViewport = UI.getSetting('view_clip');