Misc · Web: the web view hands the keyboard back

WKWebView takes AppKit's first responder on a press and gpui's view
never asks for it back, so typed text went to the page for good. The
web view now hands it back through wry's focus_parent on every press
gpui gets and when its page drops. The gallery proves it with a native
key after a press on the page. in_view builds only where it is used,
its test covers a box that straddles the view's top, and the embed's
frame takes the card's bottom corners.

examples/gallery/pages/misc/mod.rs

@@ -66,6 +66,13 @@ pub const PAGE: Page = Page {
         Step::UpAt("cookies", 230.0, 84.0),
         Step::HoverAt("cookies", 20.0, 20.0),
         Step::Shot("cookies-choosing"),
+        Step::DownAt("web", 240.0, 100.0),
+        Step::UpAt("web", 240.0, 100.0),
+        Step::DownAt("converter", 24.0, 60.0),
+        Step::UpAt("converter", 24.0, 60.0),
+        Step::Key("cmd-a"),
+        Step::NativeKey("5"),
+        Step::Shot("keys-back"),
     ],
 };
 

examples/gallery/pages/misc/web.rs

@@ -1,6 +1,7 @@
 use ely_gpui_component::misc::{IframeEmbed, WebSource, WebView};
 use gpui::{App, IntoElement, ParentElement, Styled, div, px};
 
+use crate::probe::probe;
 use crate::ui::{blocked, section};
 
 const PAGE: &str = r#"<!doctype html>
@@ -25,12 +26,13 @@ pub fn render(cx: &App) -> impl IntoElement + use<> {
                 "A native web view laid over its box: an address, or HTML the owner hands in, which makes it an HTML preview. It draws above everything gpui paints and follows the box each frame.",
                 cx,
             )
-            .child(
+            .child(probe(
+                "web",
                 div()
                     .w(px(480.0))
                     .h(px(200.0))
                     .child(WebView::new("web", WebSource::Html(PAGE.into()))),
-            ),
+            )),
         )
         .child(
             section(

examples/gallery/script.rs

@@ -46,7 +46,7 @@ pub enum Step {
     ExpectClosed(&'static str),
     /// Photographs this app's frontmost popup, such as the share picker.
     ShotPopup(&'static str),
-    /// Posts a key to AppKit itself; only `escape` is known.
+    /// Posts a key down to AppKit itself; `escape` and `5` are known.
     NativeKey(&'static str),
     /// Cancels the open file panel, whose content runs out of process.
     CancelPanel,
@@ -210,9 +210,13 @@ pub async fn play(
                 log::info!("script: wrote {}", file.display());
             }
             Step::NativeKey(key) => {
-                anyhow::ensure!(key == "escape", "native key {key} is not known");
+                let (text, code) = match key {
+                    "escape" => ("\u{1b}", 53),
+                    "5" => ("5", 23),
+                    other => anyhow::bail!("native key {other} is not known"),
+                };
                 let number = window.update(cx, |_, window, _| number(window))??;
-                post_key(number, true, "\u{1b}", 53)?;
+                post_key(number, true, text, code)?;
             }
             Step::CancelPanel => cancel_panel()?,
             Step::ExpectClosed(key) => {