Improve warning when failing to copy on web

1 files changed, 6 insertions, 1 deletions

diff --git a/crates/eframe/src/web/mod.rs b/crates/eframe/src/web/mod.rs
index 3f314752..212c0ae6 100644
--- a/crates/eframe/src/web/mod.rs
+++ b/crates/eframe/src/web/mod.rs
@@ -172,7 +172,12 @@ fn set_clipboard_text(s: &str) {
             };
             wasm_bindgen_futures::spawn_local(future);
         } else {
-            log::warn!("window.navigator.clipboard is null; can't copy text");
+            let is_secure_context = window.is_secure_context();
+            if is_secure_context {
+                log::warn!("window.navigator.clipboard is null; can't copy text");
+            } else {
+                log::warn!("window.navigator.clipboard is null; can't copy text, probably because we're not in a secure context. See https://developer.mozilla.org/en-US/docs/Web/Security/Secure_Contexts");
+            }
         }
     }
 }