Struct DevToolsState 

pub struct DevToolsState { /* private fields */ }

Everything the inspector displays, and the only mutable state it owns.

Installed once with DevToolsState::init; feed it through the free functions in crate::devtools (console_log, network_begin, …), which are no-ops when it was never installed. That is deliberate: instrumentation left in a release build costs a global lookup and nothing more.

Implementations

impl DevToolsState

pub fn new() -> Self

pub fn limits(self, limits: Limits) -> Self

pub fn init(self, cx: &mut App)

Install as the app global. Call once at startup, before opening crate::devtools::DevTools.

pub fn generation(&self) -> u64

Bumped on every mutation, so a panel can tell “nothing changed” cheaply.

pub fn now(&self) -> Duration

Time since the store was created — the clock every record is stamped on.

pub fn push_log(&mut self, record: LogRecord)

Append a line, coalescing it into the previous one when identical.

pub fn logs(&self) -> &VecDeque<LogRecord>

pub fn clear_logs(&mut self)

pub fn log_issues(&self) -> (usize, usize)

Warning and error tallies for the toolbar badges.

pub fn push_network(&mut self, record: NetworkRecord) -> u64

Record a request that has started. Returns its id, which the host keeps to settle the request later.

pub fn update_network(&mut self, id: u64, f: impl FnOnce(&mut NetworkRecord))

Amend a request in flight — the response landed, the transfer grew, it failed. Silently does nothing if the record was already evicted.

pub fn network(&self) -> &VecDeque<NetworkRecord>

pub fn clear_network(&mut self)

pub fn network_span(&self) -> (Duration, Duration)

The window the waterfall is drawn against: earliest start to latest end.

pub fn network_totals(&self) -> (usize, u64, u64)

Row count, total transfer, and total resource bytes — the status bar.

pub fn set_storage(&mut self, domain: StorageDomain)

Register a domain, replacing any existing one with the same id. Hosts call this whenever their store changes; the panel always shows the latest snapshot.

pub fn remove_storage(&mut self, id: &str)

pub fn storage(&self) -> &[StorageDomain]

pub fn push_timeline(&mut self, event: TimelineEvent)

pub fn timeline(&self) -> &VecDeque<TimelineEvent>

pub fn clear_timeline(&mut self)

pub fn record_frame(&mut self)

Called once per rendered frame by the inspector itself. Deriving the interval here — rather than asking the host to report it — is what makes the Frames band work with no wiring at all.

pub fn stop_frames(&mut self)

Forget where the last frame landed. Called when recording stops so the idle gap before it resumes is not measured as one enormous frame.

pub fn frames(&self) -> &VecDeque<Duration>

pub fn fps(&self) -> Option<f32>

Frames per second over the recorded window, or None before the second frame has been seen.

pub fn clear_all(&mut self)

Drop every record. The toolbar’s clear button, and what a host calls when it wants a clean slate around a reproduction.

Trait Implementations

impl Default for DevToolsState

fn default() -> Self

Returns the “default value” for a type.

impl Global for DevToolsState