Struct Expansion 

pub struct Expansion<K> { /* private fields */ }

The expansion a projection is laid out for: the default depth, and the groups and tree rows the user toggled against it. The grid owns it, as it owns the quick filter, and sets it into each view (ViewSpec::expansion).

Toggles are kept by GroupPath and by row key, so they survive rebuilds and a change of grouping: going back to an earlier grouping brings its expansion back. Cloning is O(1).

Implementations

impl<K: Eq + Hash> Expansion<K>

pub fn depth(&self) -> ExpandDepth

The default depth.

pub fn is_group_expanded(&self, path: &GroupPath, levels: usize) -> bool

Whether the group at path, in a grouping of levels levels, is expanded: by the default depth, inverted if the user toggled it.

pub fn is_row_expanded(&self, key: &K, depth: u16) -> bool

Whether the tree row with key at depth is expanded: by the default depth (Captions is All in a tree), inverted if the user toggled it.

Trait Implementations

impl<K> Clone for Expansion<K>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<K: Debug> Debug for Expansion<K>

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

Formats the value using the given formatter.

impl<K> Default for Expansion<K>

fn default() -> Self

Returns the “default value” for a type.

impl<K: Eq + Hash> PartialEq for Expansion<K>

fn eq(&self, other: &Self) -> 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<K: Eq + Hash> Eq for Expansion<K>