Struct WebSession 

pub struct WebSession(/* private fields */);

A retained browsing session: the thing that outlives the view showing it.

Day rebuilds a page’s whole subtree on every navigation, so a plain web_view gets a brand-new native view each visit and reloads from scratch. A session moves the engine out of that lifetime: the piece keeps the native web view alive against this id, and a later web_view bound to the same session re-attaches it with its page, scroll position, history and JavaScript context intact.

This is the shape Apple settled on for the same problem (WebPage holds the session and WebView renders it), and the reason it works is the same: a web view’s content lives in the object and its content process, not in its attachment to a parent view.

Sessions are keyed by a &'static str, so WebSession::global is idempotent and safe to call from a page function that runs again on every navigation. There is no way to mint an anonymous one: an id that changed per build would retain a new view each visit and leak them all.

The retained view is never freed: one session is one live web view for the process’s lifetime. Use them for pages a user returns to, not per-item.

Implementations

impl WebSession

pub fn global(key: &'static str) -> WebSession

The session named key, created on first use. Calling this repeatedly with the same key returns the same session.

pub fn id(self) -> u64

The raw id, as it reaches a backend arm through WebProps::session.

Trait Implementations

impl Clone for WebSession

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for WebSession

impl Debug for WebSession

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

Formats the value using the given formatter.

impl Eq for WebSession

impl PartialEq for WebSession

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for WebSession