Keyboardable buttons in linux alerts (#13235)

Release Notes:

- N/A

crates/zed/src/zed/linux_prompts.rs

@@ -3,7 +3,10 @@ use gpui::{
     InteractiveElement, IntoElement, ParentElement, PromptHandle, PromptLevel, PromptResponse,
     Render, RenderablePromptHandle, Styled, ViewContext, VisualContext, WindowContext,
 };
-use ui::{h_flex, v_flex, ButtonCommon, ButtonStyle, Clickable, ElevationIndex, LabelSize};
+use ui::{
+    h_flex, v_flex, ButtonCommon, ButtonStyle, Clickable, ElevationIndex, FluentBuilder, LabelSize,
+    TintColor,
+};
 use workspace::ui::StyledExt;
 
 pub fn init(cx: &mut AppContext) {
@@ -40,13 +43,25 @@ pub struct FallbackPromptRenderer {
     actions: Vec<String>,
     focus: FocusHandle,
 }
+impl FallbackPromptRenderer {
+    fn confirm(&mut self, _: &menu::Confirm, cx: &mut ViewContext<Self>) {
+        cx.emit(PromptResponse(0));
+    }
 
+    fn cancel(&mut self, _: &menu::Cancel, cx: &mut ViewContext<Self>) {
+        if let Some(ix) = self.actions.iter().position(|a| a == "Cancel") {
+            cx.emit(PromptResponse(ix));
+        }
+    }
+}
 impl Render for FallbackPromptRenderer {
     fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {
-        let prompt =
-            v_flex()
+        let prompt = v_flex()
+            .key_context("Prompt")
             .cursor_default()
             .track_focus(&self.focus)
+            .on_action(cx.listener(Self::confirm))
+            .on_action(cx.listener(Self::cancel))
             .elevation_3(cx)
             .w_72()
             .overflow_hidden()
@@ -68,10 +83,13 @@ impl Render for FallbackPromptRenderer {
                     .child(detail)
             }))
             .child(h_flex().justify_end().gap_2().children(
-                    self.actions.iter().enumerate().map(|(ix, action)| {
+                self.actions.iter().enumerate().rev().map(|(ix, action)| {
                     ui::Button::new(ix, action.clone())
                         .label_size(LabelSize::Large)
                         .style(ButtonStyle::Filled)
+                        .when(ix == 0, |el| {
+                            el.style(ButtonStyle::Tinted(TintColor::Accent))
+                        })
                         .layer(ElevationIndex::ModalSurface)
                         .on_click(cx.listener(move |_, _, cx| {
                             cx.emit(PromptResponse(ix));