add passphrase dialog

crates/workspace/src/workspace.rs

@@ -7,12 +7,14 @@ use gpui_component::{ActiveTheme, Root, StyledExt, TitleBar, h_flex, v_flex};
 use signed_state::{Backend, BackendEvent};
 
 use crate::views::SidebarPanel;
+use crate::views::sidebar::passphrase_dialog;
 
 /// Root view of the app: title bar, dock area, status bar.
 pub struct Workspace {
     dock: Entity<DockArea>,
     status: SharedString,
     _subscription: Subscription,
+    _passphrase_subscription: Subscription,
 }
 
 impl Workspace {
@@ -59,10 +61,28 @@ impl Workspace {
             cx.notify();
         });
 
+        // Ask for the passphrase when the stored identity is NIP-49
+        // encrypted. Subscribed via the window, since opening a dialog
+        // needs one.
+        let passphrase_subscription =
+            window.subscribe(&backend, cx, |_backend, event, window, cx| {
+                if matches!(event, BackendEvent::PassphraseRequired) {
+                    passphrase_dialog::open(window, cx);
+                }
+            });
+
+        // The event may have fired before this window existed (the backend
+        // is initialized before the first window opens); fall back to the
+        // backend state in that case.
+        if backend.read(cx).passphrase_required() {
+            passphrase_dialog::open(window, cx);
+        }
+
         Self {
             dock,
             status,
             _subscription: subscription,
+            _passphrase_subscription: passphrase_subscription,
         }
     }
 }