Struct Column 

pub struct Column { /* private fields */ }

Lays its children out top to bottom, like a CSS flexbox column.

gap, padding, align and justify change the layout. Each takes a value or a closure.

Implementations

impl Column

pub fn new() -> Self

An empty container.

pub fn gap(self, gap: impl IntoProp<u32>) -> Self

Sets the space between children in logical pixels.

pub fn padding( self, vertical: impl IntoProp<u32>, horizontal: impl IntoProp<u32>, ) -> Self

Sets the padding: vertical above and below, horizontal left and right, in logical pixels. It wins over the padding of the container’s Style.

pub fn align(self, align: impl IntoProp<Align>) -> Self

Sets how children are placed across the direction.

pub fn justify(self, justify: impl IntoProp<Justify>) -> Self

Sets how children are placed along the direction.

pub fn child(self, child: impl Widget) -> Self

Adds child after the children added so far.

pub fn children_keyed<T, K, W>( self, items: impl FnMut() -> Vec<T> + 'static, key: impl FnMut(&T) -> K + 'static, view: impl FnMut(&Cx, Memo<T>) -> W + 'static, ) -> Self

where T: Clone + PartialEq + 'static, K: Eq + Hash + 'static, W: Widget,

Adds one child per item, after the children added so far.

items runs in an effect, so the list updates when a signal it read changes. key names each item. view builds the child for a key the first time it appears, and that child is kept while its key stays in the list, even if it moves. view receives the item’s Cx and a Memo that updates when that item’s value changes. When a key leaves the list, its child and everything created in view are freed, at once or after an exit. If two items share a key, only the first is shown and the duplicate is logged.

pub fn exit(self, exit: impl IntoProp<Duration>) -> Self

Lets the children of the last children_keyed list added leave over exit instead of at once. A child whose key leaves stays mounted and painted right after the child that was before it, and its context’s leaving turns true, so its own cx.animate can fade or shrink it out. After exit it is freed. If its key comes back first, the same child, with its state, takes the key’s new place. A closure is read as each key leaves, and an exit of 0 removes at once. Leaving children still take pointer and keyboard input; a handler can check cx.leaving() to ignore clicks during the exit.

pub fn style(self, style: impl IntoProp<Style>) -> Self

Sets the widget’s Style.

Trait Implementations

impl Default for Column

fn default() -> Self

Returns the “default value” for a type.

impl Widget for Column

fn into_element(self: Box<Self>) -> Element

Turns the description, and everything inside it, into the element the window builds nodes from. It runs when the window is created or a list item first appears, before the window’s tree is touched and without recording what it reads, so it only describes.