Struct App 

pub(crate) struct App {

    pub connected: bool,
    pub port_path: String,
    pub state: RadioState,
    pub focus: Pane,
    pub main_view: MainView,
    pub input_mode: InputMode,
    pub mcp: McpState,
    pub should_quit: bool,
    pub quit_pending: bool,
    pub status_message: Option<String>,
    pub show_help: bool,
    pub channel_list_index: usize,
    pub settings_cat_index: usize,
    pub settings_mcp_index: usize,
    pub search_filter: String,
    pub target_band: Band,
    pub cmd_tx: Option<UnboundedSender<RadioCommand>>,
    pub aprs_mode: AprsMode,
    pub aprs_stations: Vec<AprsStationCache>,
    pub aprs_messages: Vec<AprsMessageStatus>,
    pub aprs_station_index: usize,
    pub aprs_compose: Option<String>,
    pub dstar_mode: DStarMode,
    pub dstar_last_heard: Vec<LastHeardEntry>,
    pub dstar_last_heard_index: usize,
    pub dstar_text_message: Option<String>,
    pub dstar_rx_header: Option<DStarHeader>,
    pub dstar_rx_active: bool,
    pub dstar_urcall_input: Option<String>,
    pub dstar_reflector_input: Option<String>,
    pub channel_edit_mode: bool,
    pub channel_edit_field: ChannelEditField,
    pub channel_edit_buffer: String,
    pub fm_radio_on: bool,
}

Central application state.

Fields

connected: bool

port_path: String

state: RadioState

focus: Pane

main_view: MainView

input_mode: InputMode

mcp: McpState

should_quit: bool

quit_pending: bool

status_message: Option<String>

show_help: bool

channel_list_index: usize

settings_cat_index: usize

Selected row in the CAT settings viewer.

settings_mcp_index: usize

Selected row in the MCP settings viewer.

search_filter: String

Active search filter for channel list (empty = show all).

target_band: Band

Which band channel-tune and freq-input target (last focused band pane).

cmd_tx: Option<UnboundedSender<RadioCommand>>

Sender for commands to the radio background task.

aprs_mode: AprsMode

APRS mode state.

aprs_stations: Vec<AprsStationCache>

Cached APRS stations, sorted by last heard (most recent first).

aprs_messages: Vec<AprsMessageStatus>

Tracked sent APRS messages.

aprs_station_index: usize

Selected station index in the APRS station list.

aprs_compose: Option<String>

When set, the APRS message compose prompt is active.

dstar_mode: DStarMode

D-STAR mode state.

dstar_last_heard: Vec<LastHeardEntry>

D-STAR last heard entries (gateway mode).

dstar_last_heard_index: usize

Selected index in the D-STAR last heard list.

dstar_text_message: Option<String>

Current D-STAR text message (from slow data).

dstar_rx_header: Option<DStarHeader>

Current D-STAR RX header (gateway mode).

dstar_rx_active: bool

Whether a D-STAR voice transmission is active.

dstar_urcall_input: Option<String>

D-STAR URCALL input buffer (when prompting).

dstar_reflector_input: Option<String>

D-STAR reflector input buffer (when prompting).

channel_edit_mode: bool

Channel edit mode is active.

channel_edit_field: ChannelEditField

Which field is selected in channel edit mode.

channel_edit_buffer: String

Text buffer for the currently edited field.

fm_radio_on: bool

FM radio status (true = on). Tracked locally since FR is write-only.

Implementations

impl App

pub(crate) fn filtered_channels(&self) -> Vec<u16>

Returns the list of used channel numbers, filtered by search_filter.

fn used_channel_count(&self) -> usize

pub(crate) fn new(port_path: String) -> Self

Create a new app instance, loading MCP cache from disk if available.

pub(crate) fn update(&mut self, msg: Message) -> bool

Process a message and update state. Returns true if a render is needed.

fn handle_key(&mut self, key: KeyEvent) -> bool

fn toggle_setting(&mut self)

Toggle a boolean setting or show hint for numeric ones.

fn adjust_setting(&mut self, delta: i8)

Adjust a numeric setting by delta with +/-.

fn handle_aprs_event(&mut self, event: AprsEvent)

Process an incoming APRS event from the radio task.

fn update_station_cache(&mut self, entry: &StationEntry)

Update the station cache from a StationEntry.

fn sort_aprs_stations(&mut self)

Sort stations by most recently heard.

fn handle_dstar_event(&mut self, event: DStarEvent)

Toggle APRS mode on or off.

fn toggle_gps(&mut self)

fn toggle_gps_pc_output(&mut self)

fn toggle_dstar_mode(&mut self)

fn toggle_fm_radio(&mut self)

fn apply_channel_edit(&mut self, field: ChannelEditField, buf: &str)

Apply a channel edit from the edit buffer.

Uses ME (memory channel) write via CAT. This tunes the radio’s live channel, not permanent memory storage (which would require MCP).

fn toggle_aprs_mode(&mut self)