Struct PiApp 

pub struct PiApp {
    pub conversation_viewport: Viewport,
    /* private fields */
}

The main interactive TUI application model.

Fields

conversation_viewport: Viewport

Implementations

impl PiApp

pub fn cycle_model(&mut self, delta: i32)

impl PiApp

pub fn open_model_selector(&mut self)

Open the model selector overlay.

pub fn handle_model_selector_key(&mut self, key: &KeyMsg) -> Option<Cmd>

Handle keyboard input while the model selector is open.

impl PiApp

pub fn handle_branch_picker_key(&mut self, key: &KeyMsg) -> Option<Cmd>

Handle keyboard input when the branch picker overlay is active.

pub fn open_branch_picker(&mut self)

Open the branch picker if the session has sibling branches.

pub fn cycle_sibling_branch(&mut self, forward: bool)

Cycle to the next or previous sibling branch (Ctrl+Right / Ctrl+Left).

impl PiApp

pub fn build_conversation_content(&self) -> String

Build the conversation content string for the viewport.

Uses MessageRenderCache (PERF-1) to avoid re-rendering unchanged messages and a conversation prefix cache (PERF-2) to skip iterating all messages during streaming. Streaming content (current_response) always renders fresh.

impl PiApp

pub fn set_terminal_size(&mut self, width: usize, height: usize)

impl PiApp

pub fn new( agent: Agent, session: Arc<Mutex<Session>>, config: Config, resources: ResourceLoader, resource_cli: ResourceCliOptions, cwd: PathBuf, model_entry: ModelEntry, model_scope: Vec<ModelEntry>, available_models: Vec<ModelEntry>, pending_inputs: Vec<PendingInput>, event_tx: Sender<PiMsg>, runtime_handle: RuntimeHandle, save_enabled: bool, extensions: Option<ExtensionManager>, keybindings_override: Option<KeyBindings>, messages: Vec<ConversationMessage>, total_usage: Usage, ) -> Self

Create a new Pi application.

pub fn session_handle(&self) -> Arc<Mutex<Session>>

pub fn status_message(&self) -> Option<&str>

Get the current status message (for testing).

pub fn conversation_messages_for_test(&self) -> &[ConversationMessage]

Snapshot the in-memory conversation buffer (integration test helper).

pub fn memory_summary_for_test(&self) -> String

Return the memory summary string (integration test helper).

pub fn install_memory_rss_reader_for_test( &mut self, read_fn: Box<dyn Fn() -> Option<usize> + Send>, )

Install a deterministic RSS sampler for integration tests.

This replaces /proc/self RSS sampling with a caller-provided function and enables immediate sampling cadence (sample_interval = 0).

pub fn force_memory_cycle_for_test(&mut self)

Force a memory monitor sample + action pass (integration test helper).

pub fn force_memory_collapse_tick_for_test(&mut self)

Force progressive-collapse timing eligibility (integration test helper).

pub const fn model_selector(&self) -> Option<&ModelSelectorOverlay>

Get a reference to the model selector overlay (for testing).

pub const fn has_branch_picker(&self) -> bool

Check if the branch picker is currently open (for testing).

pub fn prefix_cache_valid_for_test(&self) -> bool

Return whether the conversation prefix cache is currently valid for the current message count (integration test helper for PERF-2).

pub fn prefix_cache_len_for_test(&self) -> usize

Return the length of the cached conversation prefix (integration test helper for PERF-2).

pub fn render_buffer_capacity_hint_for_test(&self) -> usize

Return the current view capacity hint from render buffers (integration test helper for PERF-7).

Trait Implementations

impl Model for PiApp

fn init(&self) -> Option<Cmd>

Initialize the model and return an optional startup command.

fn update(&mut self, msg: Message) -> Option<Cmd>

Process a message and return a new command.

fn view(&self) -> String

Render the model as a string for display.