fix: support fallback copy for webui replies

2026-06-02 14:08:55 +08:00
parent 1886d22352
commit 3e98a03188
3 changed files with 109 additions and 2 deletions
@@ -0,0 +1,40 @@
+export async function copyTextToClipboard(text: string): Promise<boolean> {
+  try {
+    if (navigator.clipboard?.writeText) {
+      await navigator.clipboard.writeText(text);
+      return true;
+    }
+  } catch {
+    // Fall through to the legacy path for browsers/WebViews where the
+    // Clipboard API exists but rejects outside a secure context.
+  }
+
+  return copyTextWithTextarea(text);
+}
+
+function copyTextWithTextarea(text: string): boolean {
+  if (typeof document.execCommand !== "function") {
+    return false;
+  }
+
+  const textarea = document.createElement("textarea");
+  textarea.value = text;
+  textarea.setAttribute("readonly", "");
+  textarea.style.position = "fixed";
+  textarea.style.top = "-9999px";
+  textarea.style.left = "-9999px";
+  textarea.style.opacity = "0";
+
+  document.body.appendChild(textarea);
+  textarea.focus();
+  textarea.select();
+  textarea.setSelectionRange(0, textarea.value.length);
+
+  try {
+    return document.execCommand("copy");
+  } catch {
+    return false;
+  } finally {
+    document.body.removeChild(textarea);
+  }
+}