Struct DispatchOutput 

pub struct DispatchOutput {
    pub events: Vec<HostEvent>,
    pub dequeued: Option<PendingWindowCreation>,
    pub removed_browser: Option<Browser>,
    pub browser_pane_register_result: Option<RegisterResult>,
    pub closed_browser_pane_label: Option<String>,
    pub drained_browser_pane_block_id: Option<String>,
    pub ended_drag_session: Option<DragSession>,
    pub pool_spawn_proceeding: bool,
    pub pool_size_after: Option<usize>,
    pub pool_destroyed_was_unpromoted: bool,
    pub promoted_pool_label: Option<String>,
}

Output bundle returned from the reducer.

Most arms communicate via events alone, but several arms have callers that need an atomic value-returning op alongside the state mutation:

• DequeuePendingWindowCreation → dequeued: Option<PendingWindowCreation> (client.rs::on_after_created needs the popped entry’s fields to drive window_meta.insert + ReportWindowOpened).

• UnregisterBrowser → removed_browser: Option<Browser> (the close path in browser_panes::AppStateCloseOps::take_browser_hwnd needs the Browser handle to extract its HWND for DestroyWindow. The atomicity matters: see codex P2 PR #660 — separating get + dispatch creates a window where concurrent readers can also resolve the label and act on the closing handle).

• TryRegisterBrowserPaneLive → browser_pane_register_result: Option<RegisterResult> (PR #5 H.1.d: BrowserPaneManager::create branches on Fresh/AlreadyLive/Closing).

• EnqueueBrowserPaneClose → closed_browser_pane_label: Option<String> (PR #5 H.1.d: the close path needs the label to call take_browser_hwnd without a separate live_browser_pane_label query that could race).

• DrainBrowserPaneByLabel → drained_browser_pane_block_id: Option<String> (PR #5 H.1.d: drain_closed_label needs the block_id to dispatch CompleteBrowserPaneClose).

• EndDrag → ended_drag_session: Option<DragSession> (PR #5 H.3: complete_cross_drag / cancel_cross_drag need the session payload to emit the renderer-side cross-drag-end event, AND need the .is_some() signal to distinguish actual end vs drag_id mismatch).

• PoolWindowSpawnStart → pool_spawn_proceeding: bool (PR #5 H.4: spawn_pool_window’s single-flight semaphore. true = slot acquired, caller proceeds with CEF spawn; false = suppressed (already in flight, or QuitState != Running)).

• PoolWindowReady / PoolWindowDestroyedBeforePromote / PopAndPromoteFrontPoolWindow → pool_size_after: Option<usize> (PR #5 H.4: caller checks against POOL_TARGET_SIZE to decide whether to trigger a refill).

• PoolWindowDestroyedBeforePromote → pool_destroyed_was_unpromoted: bool (PR #5 H.4: caller gates pool-inventory reports on this — the post-promote close path doesn’t own that update).

• PopAndPromoteFrontPoolWindow → promoted_pool_label: Option<String> (PR #5 H.4: caller needs the popped label to drive the CEF show + emit the pool:promote frontend event).

Default keeps the dispatch return type uniform across arms that don’t populate these fields.

Fields

events: Vec<HostEvent>

dequeued: Option<PendingWindowCreation>

removed_browser: Option<Browser>

browser_pane_register_result: Option<RegisterResult>

closed_browser_pane_label: Option<String>

drained_browser_pane_block_id: Option<String>

ended_drag_session: Option<DragSession>

pool_spawn_proceeding: bool

pool_size_after: Option<usize>

pool_destroyed_was_unpromoted: bool

promoted_pool_label: Option<String>

Trait Implementations

impl Debug for DispatchOutput

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for DispatchOutput

fn default() -> DispatchOutput

Returns the “default value” for a type.