Forms: Cmd-Enter submits from any control in a form

Form sets the ElyForm key context and binds secondary-enter to Submit
under it, so a focused tile, chip or button submits too. The prompt
enhancer's wash trims anything but letters and digits from its runs,
its spacing sits on its parts so nothing gaps at rest, and its tests
check that the field takes focus back.

TASKS.md

@@ -291,3 +291,4 @@ Per-component lines live in `tasks/`. Tags there:
 | T24e | 2 | PASS | |
 | T24f | 1 | FAIL | Tab to a sortable header past a narrow table's edge left it out of view; a virtualized table still drew past its box at 280px |
 | T24f | 2 | PASS | |
+| T25a | 1 | FAIL | Cmd-Enter generated only while a text field held focus; the form set no key context of its own |

src/forms/structure.rs

@@ -15,7 +15,10 @@ use crate::{
     typography::{Caption, Heading, Label},
 };
 
-/// Sections stacked with room between them. Cmd-Enter in any field submits the form.
+/// The key context a form sets, so Cmd-Enter reaches it from any control inside.
+pub(crate) const FORM_CONTEXT: &str = "ElyForm";
+
+/// Sections stacked with room between them. Cmd-Enter on any field or control inside submits the form.
 #[derive(IntoElement)]
 pub struct Form {
     id: ElementId,
@@ -49,6 +52,7 @@ impl RenderOnce for Form {
         let id = self.id.clone();
         div()
             .id(self.id)
+            .key_context(FORM_CONTEXT)
             .flex()
             .flex_col()
             .gap_8()

src/forms/tests/structure.rs

@@ -4,7 +4,10 @@ use gpui::{
 };
 
 use super::setup;
-use crate::forms::{FieldArray, Form, FormField, Input, InputEvent, TextInput};
+use crate::{
+    buttons::Button,
+    forms::{FieldArray, Form, FormField, Input, InputEvent, TextInput},
+};
 
 struct Signup {
     name: Entity<TextInput>,
@@ -27,13 +30,13 @@ impl Render for Signup {
                     .required()
                     .child(Input::new(&self.name)),
             )
+            .child(Button::new("signup-save", "Save"))
     }
 }
 
-#[gpui::test]
-fn cmd_enter_in_a_field_submits_the_form_once(cx: &mut TestAppContext) {
+fn signup(cx: &mut TestAppContext) -> (Entity<Signup>, &mut VisualTestContext) {
     setup(cx);
-    let (view, cx) = cx.add_window_view(|window, cx| {
+    cx.add_window_view(|window, cx| {
         let name = cx.new(|cx| TextInput::new(window, cx));
         cx.subscribe(&name, |view: &mut Signup, _, event, _| {
             if *event == InputEvent::Submit {
@@ -46,7 +49,12 @@ fn cmd_enter_in_a_field_submits_the_form_once(cx: &mut TestAppContext) {
             sent: 0,
             field_submits: 0,
         }
-    });
+    })
+}
+
+#[gpui::test]
+fn cmd_enter_in_a_field_submits_the_form_once(cx: &mut TestAppContext) {
+    let (view, cx) = signup(cx);
     cx.update(|window, _| window.focus_next());
     cx.simulate_input("Ada");
     cx.simulate_keystrokes("cmd-enter");
@@ -54,6 +62,21 @@ fn cmd_enter_in_a_field_submits_the_form_once(cx: &mut TestAppContext) {
     assert_eq!(counts, (1, 0));
 }
 
+#[gpui::test]
+fn cmd_enter_on_any_control_in_a_form_submits_it(cx: &mut TestAppContext) {
+    let (view, cx) = signup(cx);
+    cx.update(|window, _| {
+        window.focus_next();
+        window.focus_next();
+    });
+    cx.simulate_keystrokes("cmd-enter");
+    assert_eq!(
+        view.read_with(cx, |view, _| view.sent),
+        1,
+        "the button holds focus"
+    );
+}
+
 struct Rows {
     rows: Vec<&'static str>,
 }

src/forms/text/actions.rs

@@ -9,6 +9,7 @@ use super::{
     edit::{self, next_grapheme, prev_grapheme},
     element::TextElement,
 };
+use crate::forms::structure::FORM_CONTEXT;
 
 actions!(
     ely_input,
@@ -87,6 +88,7 @@ pub(crate) fn bind_keys(cx: &mut App) {
         KeyBinding::new("enter", Enter, Some(CONTEXT)),
         KeyBinding::new("shift-enter", Newline, Some(CONTEXT)),
         KeyBinding::new("secondary-enter", Submit, Some(CONTEXT)),
+        KeyBinding::new("secondary-enter", Submit, Some(FORM_CONTEXT)),
     ];
     if cfg!(target_os = "macos") {
         bindings.extend([

src/generative/prompt.rs

@@ -16,7 +16,7 @@ use crate::{
 
 type OnText = Rc<dyn Fn(&str, &mut Window, &mut App)>;
 
-/// Byte ranges of `new` that `old` lacks, word by word: neighbors joined, spaces and punctuation trimmed from each end.
+/// Byte ranges of `new` that `old` lacks, word by word: neighbors joined, and anything but letters and digits trimmed from each end.
 pub(crate) fn added_words(old: &str, new: &str) -> Vec<Range<usize>> {
     let diff = TextDiff::from_unicode_words(old, new);
     let mut ranges: Vec<Range<usize>> = Vec::new();
@@ -37,7 +37,7 @@ pub(crate) fn added_words(old: &str, new: &str) -> Vec<Range<usize>> {
         .into_iter()
         .filter_map(|range| {
             let word = &new[range.clone()];
-            let glue = |ch: char| ch.is_whitespace() || ch.is_ascii_punctuation();
+            let glue = |ch: char| !ch.is_alphanumeric();
             let start = range.start + word.len() - word.trim_start_matches(glue).len();
             let end = range.end - (word.len() - word.trim_end_matches(glue).len());
             (start < end).then_some(start..end)
@@ -145,7 +145,7 @@ impl RenderOnce for PromptEnhancer {
             ..HighlightStyle::default()
         };
         let card = div()
-            .mt_1()
+            .mt_3()
             .flex()
             .flex_col()
             .gap_3()
@@ -202,9 +202,8 @@ impl RenderOnce for PromptEnhancer {
             .w_full()
             .flex()
             .flex_col()
-            .gap_2()
             .child(Input::new(&self.field))
-            .children(enhance.map(|button| div().flex().justify_end().child(button)))
+            .children(enhance.map(|button| div().mt_2().flex().justify_end().child(button)))
             .child(
                 Transition::new((self.id.clone(), "offered"), shown)
                     .entrance(Entrance::Rise)
@@ -231,6 +230,10 @@ mod tests {
             ["pale limestone"],
             "a comma added after a kept word stays plain"
         );
+        let new = "白い中庭，朝の光";
+        let ranges = added_words("白い中庭", new);
+        let words: Vec<&str> = ranges.iter().map(|range| &new[range.clone()]).collect();
+        assert_eq!(words, ["朝の光"], "any script's punctuation stays plain");
         assert!(added_words("same words", "same words").is_empty());
         let whole = 2..7;
         assert_eq!(added_words("", "  a cat "), [whole]);

src/generative/tests/mod.rs

@@ -1,7 +1,7 @@
 use std::{cell::RefCell, rc::Rc};
 
 use gpui::{
-    AppContext as _, Context, Entity, IntoElement, KeyBinding, KeyUpEvent, Keystroke,
+    AppContext as _, Context, Entity, Focusable, IntoElement, KeyBinding, KeyUpEvent, Keystroke,
     ParentElement, Render, SharedString, Styled, TestAppContext, VisualTestContext, Window, div,
     px,
 };
@@ -101,6 +101,11 @@ fn enhance_asks_with_the_trimmed_prompt_and_use_this_takes_the_offer(cx: &mut Te
         assert_eq!(view.heard, ["asked a cat", "taken true"]);
         assert_eq!(view.field.read(cx).text(), "a fluffy cat asleep");
     });
+    assert!(field_focused(&view, cx), "the field takes focus back");
+}
+
+fn field_focused(view: &Entity<Enhancing>, cx: &mut VisualTestContext) -> bool {
+    cx.update(|window, cx| view.read(cx).field.focus_handle(cx).is_focused(window))
 }
 
 #[gpui::test]
@@ -119,6 +124,7 @@ fn keep_mine_leaves_the_prompt_as_written(cx: &mut TestAppContext) {
         assert_eq!(view.heard, ["taken false"]);
         assert_eq!(view.field.read(cx).text(), "a cat");
     });
+    assert!(field_focused(&view, cx), "the field takes focus back");
 }
 
 /// Three presets, two ratios, a seed, and every pick heard.