Project arrow keys

mac/Sources/Byre/Project.swift

@@ -11,20 +11,38 @@ struct ProjectView: View {
     @Environment(Overlays.self) private var overlays
     @ViewState private var todos: [String: Result<Todo, ApiError>] = [:]
     @ViewState private var off: (() -> Void)?
+    @FocusState private var keys: Bool
 
     var body: some View {
-        ScrollView {
-            if let p = store.focusedProject() {
-                ProjectBlock(project: p, todo: todos[p.id])
-                    .padding(.horizontal, 16)
-                    .padding(.top, 8)
-                    .padding(.bottom, 16)
-            } else {
-                Muted(text: "No project selected.")
+        ScrollViewReader { proxy in
+            ScrollView {
+                if let p = store.focusedProject() {
+                    ProjectBlock(project: p, todo: todos[p.id])
+                        .padding(.horizontal, 16)
+                        .padding(.top, 8)
+                        .padding(.bottom, 16)
+                } else {
+                    Muted(text: "No project selected.")
+                }
+            }
+            .onChange(of: store.selectedTaskId) {
+                if let id = store.selectedTaskId {
+                    proxy.scrollTo(id)
+                }
             }
         }
         .frame(maxWidth: .infinity, maxHeight: .infinity)
+        .focusable()
+        .focusEffectDisabled()
+        .focused($keys)
+        .onKeyPress(keys: [.upArrow, .downArrow]) { press in
+            step(press.key == .downArrow ? 1 : -1)
+            return .handled
+        }
         .onAppear {
+            if !(overlays.window?.firstResponder is NSTextView) {
+                keys = true
+            }
             off = store.events.add { ev in
                 if refreshKinds.contains(ev.kind), let projectId = ev.projectId {
                     load(projectId)
@@ -51,6 +69,23 @@ struct ProjectView: View {
         }
     }
 
+    private func step(_ by: Int) {
+        guard let p = store.focusedProject() else {
+            return
+        }
+        let rows = nested(store, (store.tasks[p.id] ?? []).filter { $0.status == .active }).map(\.task.id)
+        if rows.isEmpty {
+            return
+        }
+        let next: Int
+        if let i = rows.firstIndex(where: { $0 == store.selectedTaskId }) {
+            next = min(max(i + by, 0), rows.count - 1)
+        } else {
+            next = by > 0 ? 0 : rows.count - 1
+        }
+        store.focusTask(rows[next], .project)
+    }
+
     private func refresh() {
         if let p = store.focusedProject() {
             load(p.id)
@@ -128,6 +163,7 @@ private struct TaskRows: View {
             VStack(alignment: .leading, spacing: 0) {
                 ForEach(nested(store, active), id: \.task.id) { row in
                     TaskRow(task: row.task, depth: row.depth)
+                        .id(row.task.id)
                 }
             }
             .padding(.bottom, 8)