clipboard reccursion fix

packages/shim/src/electron/remote/clipboard.js

@@ -1,10 +1,18 @@
+import { getClipboard } from "./native-clipboard.js";
+
 export const clipboardShim = {
   readText() {
     return "";
   },
 
   writeText(text) {
-    navigator.clipboard.writeText(text).catch((e) => {
+    const clip = getClipboard();
+
+    if (!clip) {
+      return;
+    }
+
+    clip.writeText(text).catch((e) => {
       console.warn("[shim:clipboard] writeText failed:", e);
     });
   },
@@ -14,7 +22,13 @@ export const clipboardShim = {
   },
 
   writeHTML(html) {
-    navigator.clipboard
+    const clip = getClipboard();
+
+    if (!clip) {
+      return;
+    }
+
+    clip
       .write([
         new ClipboardItem({
           "text/html": new Blob([html], { type: "text/html" }),
@@ -35,6 +49,12 @@ export const clipboardShim = {
       return;
     }
 
+    const clip = getClipboard();
+
+    if (!clip) {
+      return;
+    }
+
     const pngData = image.toPNG();
 
     if (!pngData || pngData.length === 0) {
@@ -43,9 +63,7 @@ export const clipboardShim = {
 
     const blob = new Blob([pngData], { type: "image/png" });
 
-    navigator.clipboard
-      .write([new ClipboardItem({ "image/png": blob })])
-      .catch((e) => {
+    clip.write([new ClipboardItem({ "image/png": blob })]).catch((e) => {
       console.warn("[shim:clipboard] writeImage failed:", e);
     });
   },
@@ -59,6 +77,12 @@ export const clipboardShim = {
   },
 
   clear() {
-    navigator.clipboard.writeText("").catch(() => {});
+    const clip = getClipboard();
+
+    if (!clip) {
+      return;
+    }
+
+    clip.writeText("").catch(() => {});
   },
 };

packages/shim/src/electron/remote/native-clipboard.js

@@ -0,0 +1,22 @@
+// Obsidian points navigator.clipboard.writeText at electron.clipboard, which already points at this shim.
+// To avoid recursion, use the untouched native prototype methods.
+const proto = typeof Clipboard !== "undefined" ? Clipboard.prototype : null;
+
+// Returns a native-backed clipboard facade, or null in insecure (non-localhost http) contexts.
+export function getClipboard() {
+  const clip =
+    typeof navigator !== "undefined" ? navigator.clipboard : undefined;
+
+  if (!proto || !clip) {
+    console.warn(
+      "[shim:clipboard] clipboard API unavailable (insecure context?)",
+    );
+    return null;
+  }
+
+  return {
+    writeText: (text) => proto.writeText.call(clip, text),
+    write: (items) => proto.write.call(clip, items),
+    read: () => proto.read.call(clip),
+  };
+}

packages/shim/src/electron/remote/window.js

@@ -1,3 +1,5 @@
+import { getClipboard } from "./native-clipboard.js";
+
 const currentWindowState = {
   title: "Obsidian",
   isMaximized: false,
@@ -196,7 +198,13 @@ const currentWebContents = {
     document.execCommand("copy");
   },
   paste() {
-    navigator.clipboard
+    const clip = getClipboard();
+
+    if (!clip) {
+      return;
+    }
+
+    clip
       .read()
       .then(async (items) => {
         const dt = new DataTransfer();
@@ -233,7 +241,13 @@ const currentWebContents = {
       });
   },
   pasteAndMatchStyle() {
-    navigator.clipboard
+    const clip = getClipboard();
+
+    if (!clip) {
+      return;
+    }
+
+    clip
       .read()
       .then(async (items) => {
         for (const item of items) {