Struct View 

pub struct View {
    pub scroll: Vec<f64>,
    pub focus: Option<FocusView>,
    pub open_resource: Option<String>,
    pub viewport: ViewRect,
    pub view_mode: Option<String>,
}

A participant’s View: everything about where they are looking that is never merged into anyone else’s. Every field derives Serialize/Deserialize so a future presence layer can broadcast any subset. View::default is “top of the document, nothing focused, no resource” — the correct starting point for a freshly-launched app.

Fields

scroll: Vec<f64>

Scroll offset(s) of the app’s scrollable content.

focus: Option<FocusView>

The focused widget’s caret/selection, or None when nothing is focused.

open_resource: Option<String>

The id of the resource currently open (a record id), or None.

viewport: ViewRect

The viewport rect in physical pixels at capture time.

view_mode: Option<String>

The current view mode, if the app has one.

Implementations

impl View

pub fn capture(app: &App) -> View

Capture the live App’s presentation into a View.

Thin front door for FreezeThaw::capture_view so callers can write the natural View::capture(&app).

pub fn restore(&self, app: &mut App)

Write this View back onto a live App: move focus and restore the caret, hand the scroll/view-mode fields to the root widget. The counterpart to View::capture.

impl View

Common local presentation validation; canonical state is never read or written here.

pub fn validate(&self) -> Result<(), ThawError>

Errors

Rejects nonfinite geometry before any widget receives it.

Trait Implementations

impl Clone for View

fn clone(&self) -> View

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for View

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

Formats the value using the given formatter.

impl Default for View

fn default() -> View

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for View

fn deserialize<__D>( __deserializer: __D, ) -> Result<View, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for View

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for View

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for View