1 files changed, 73 insertions, 0 deletions
diff --git a/packages/taler-wallet-webextension/src/hooks/useClipboardPermissions.ts b/packages/taler-wallet-webextension/src/hooks/useClipboardPermissions.ts
new file mode 100644
index 000000000..c69b116b7
--- /dev/null
+++ b/packages/taler-wallet-webextension/src/hooks/useClipboardPermissions.ts
@@ -0,0 +1,73 @@
+/*
+ This file is part of GNU Taler
+ (C) 2022 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+import { useState, useEffect } from "preact/hooks";
+import * as wxApi from "../wxApi.js";
+import { platform } from "../platform/api.js";
+import { ToggleHandler } from "../mui/handlers.js";
+import { TalerError } from "@gnu-taler/taler-wallet-core";
+
+export function useClipboardPermissions(): ToggleHandler {
+  const [enabled, setEnabled] = useState(false);
+  const [error, setError] = useState<TalerError | undefined>();
+  const toggle = async (): Promise<void> => {
+    return handleClipboardPerm(enabled, setEnabled).catch((e) => {
+      setError(TalerError.fromException(e));
+    });
+  };
+
+  useEffect(() => {
+    async function getValue(): Promise<void> {
+      const res = await wxApi.containsHeaderListener();
+      setEnabled(res.newValue);
+    }
+    getValue();
+  }, []);
+
+  return {
+    value: enabled,
+    button: {
+      onClick: toggle,
+      error,
+    },
+  };
+}
+
+async function handleClipboardPerm(
+  isEnabled: boolean,
+  onChange: (value: boolean) => void,
+): Promise<void> {
+  if (!isEnabled) {
+    // We set permissions here, since apparently FF wants this to be done
+    // as the result of an input event ...
+    let granted: boolean;
+    try {
+      granted = await platform.getPermissionsApi().requestClipboardPermissions();
+    } catch (lastError) {
+      onChange(false);
+      throw lastError;
+    }
+    // const res = await wxApi.toggleHeaderListener(granted);
+    onChange(granted);
+  } else {
+    try {
+      await wxApi.toggleHeaderListener(false).then((r) => onChange(r.newValue));
+    } catch (e) {
+      console.log(e);
+    }
+  }
+  return;
+}