Struct LayoutExpansion 

#[non_exhaustive]
pub struct LayoutExpansion { /* private fields */ }

The saved expansion of groups: the default depth, and the groups the user toggled against it. A toggled group is its key values from the top level down, one per level of the layout’s group_by; the levels name the columns, so a path holds values only.

Serialized as {"depth": "all", "toggled": [["AAPL"], ["MSFT", "Sell"]]}. depth is "all", "captions" or the number of expanded levels (ExpandDepth); a value is written as an OwnedValue is, so 12 reads back as an integer and 12.0 as a float. toggled is not written when it is empty. JSON has no NaN or infinity: a path with one is not written, and that group’s toggle is not saved.

Reading drops a path with a value this build cannot hold, such as a decimal without the decimal feature or a kind of value a newer build added, and keeps the rest of the layout; the grid’s LayoutReport::dropped_expansion counts it. Tree rows are not saved: their keys are the application’s own type.

Implementations

impl LayoutExpansion

pub fn new(depth: ExpandDepth) -> Self

depth, with no group toggled.

pub fn with_toggled(self, path: impl IntoIterator<Item = OwnedValue>) -> Self

Adds a group toggled against the depth: its key values, the top level first.

pub fn depth(&self) -> ExpandDepth

The default depth.

pub fn toggled(&self) -> &[Vec<OwnedValue>]

The toggled groups in saved order, each as its key values from the top level down.

pub fn is_default(&self) -> bool

Returns true for the default: every group expanded, none toggled.

Trait Implementations

impl Clone for LayoutExpansion

fn clone(&self) -> LayoutExpansion

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LayoutExpansion

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

Formats the value using the given formatter.

impl Default for LayoutExpansion

fn default() -> LayoutExpansion

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for LayoutExpansion

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for LayoutExpansion

fn eq(&self, other: &LayoutExpansion) -> 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 LayoutExpansion

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for LayoutExpansion

impl StructuralPartialEq for LayoutExpansion