Handle cases where Shift+Tab does not issue a BackTab KeyEvent

Author: Emil Hammarstrom

src/handler.rs

@@ -12,6 +12,50 @@ use tokio::sync::mpsc::UnboundedSender;
 
 use tui_input::backend::crossterm::EventHandler;
 
+fn forward_tab(app: &mut App) {
+    match app.focused_block {
+        FocusedBlock::Adapter => {
+            app.focused_block = FocusedBlock::PairedDevices;
+            app.reset_devices_state();
+        }
+        FocusedBlock::PairedDevices => {
+            if let Some(selected_controller) = app.controller_state.selected() {
+                let controller = &app.controllers[selected_controller];
+                if controller.new_devices.is_empty() {
+                    app.focused_block = FocusedBlock::Adapter;
+                } else {
+                    app.focused_block = FocusedBlock::NewDevices;
+                }
+            }
+        }
+        FocusedBlock::NewDevices => app.focused_block = FocusedBlock::Adapter,
+        _ => {}
+    }
+}
+
+fn backward_tab(app: &mut App) {
+    match app.focused_block {
+        FocusedBlock::Adapter => {
+            if let Some(selected_controller) = app.controller_state.selected() {
+                let controller = &app.controllers[selected_controller];
+                if controller.new_devices.is_empty() {
+                    app.focused_block = FocusedBlock::PairedDevices;
+                } else {
+                    app.focused_block = FocusedBlock::NewDevices;
+                }
+            }
+        }
+        FocusedBlock::PairedDevices => {
+            app.focused_block = FocusedBlock::Adapter;
+        }
+        FocusedBlock::NewDevices => {
+            app.focused_block = FocusedBlock::PairedDevices;
+            app.reset_devices_state();
+        }
+        _ => {}
+    }
+}
+
 pub async fn handle_key_events(
     key_event: KeyEvent,
     app: &mut App,
@@ -80,45 +124,12 @@ pub async fn handle_key_events(
                 }
 
                 // Switch focus
-                KeyCode::Tab => match app.focused_block {
-                    FocusedBlock::Adapter => {
-                        app.focused_block = FocusedBlock::PairedDevices;
-                        app.reset_devices_state();
-                    }
-                    FocusedBlock::PairedDevices => {
-                        if let Some(selected_controller) = app.controller_state.selected() {
-                            let controller = &app.controllers[selected_controller];
-                            if controller.new_devices.is_empty() {
-                                app.focused_block = FocusedBlock::Adapter;
-                            } else {
-                                app.focused_block = FocusedBlock::NewDevices;
-                            }
-                        }
-                    }
-                    FocusedBlock::NewDevices => app.focused_block = FocusedBlock::Adapter,
-                    _ => {}
+                KeyCode::Tab => match key_event.modifiers {
+                    KeyModifiers::SHIFT => backward_tab(app),
+                    _ => forward_tab(app),
                 },
 
-                KeyCode::BackTab => match app.focused_block {
-                    FocusedBlock::Adapter => {
-                        if let Some(selected_controller) = app.controller_state.selected() {
-                            let controller = &app.controllers[selected_controller];
-                            if controller.new_devices.is_empty() {
-                                app.focused_block = FocusedBlock::PairedDevices;
-                            } else {
-                                app.focused_block = FocusedBlock::NewDevices;
-                            }
-                        }
-                    }
-                    FocusedBlock::PairedDevices => {
-                        app.focused_block = FocusedBlock::Adapter;
-                    }
-                    FocusedBlock::NewDevices => {
-                        app.focused_block = FocusedBlock::PairedDevices;
-                        app.reset_devices_state();
-                    }
-                    _ => {}
-                },
+                KeyCode::BackTab => backward_tab(app),
 
                 KeyCode::Char('h') => match app.focused_block {
                     FocusedBlock::Adapter => {