Struct LayoutManager 

pub struct LayoutManager { /* private fields */ }

Manages measuring and arranging of controls.

Implementations

impl LayoutManager

pub fn new(owner: Weak<dyn ILayoutRoot>) -> Rc<Self>

Creates a layout manager for a layout root.

pub fn is_in_layout_pass(&self) -> bool

Whether a layout pass is currently executing.

pub fn total_pass_count(&self) -> i32

The number of layout passes executed so far.

pub fn layout_pass_timed(&self) -> Option<Rc<dyn Fn(LayoutPassTiming)>>

The callback that receives the timing of each layout pass (C# LayoutPassTimed, internal), or None.

pub fn set_layout_pass_timed(&self, value: Option<Rc<dyn Fn(LayoutPassTiming)>>)

Sets the callback that receives the timing of each layout pass.

Trait Implementations

impl IBringIntoViewLayoutManager for LayoutManager

fn is_in_layout_pass(&self) -> bool

Gets whether a layout pass is currently running.

fn enqueue_bring_into_view(&self, request: Rc<dyn BringIntoViewRequest>)

Enqueues a bring-into-view request to be processed at the end of the current or next layout pass, replacing any previously enqueued request for the same target.

impl ILayoutManager for LayoutManager

fn add_layout_updated(&self, handler: Rc<dyn Fn()>) -> u64

Subscribes to the event raised when the layout manager completes a layout pass. Returns a token for remove_layout_updated.

fn remove_layout_updated(&self, token: u64)

Unsubscribes a layout updated handler.

fn invalidate_measure(&self, control: &Layoutable)

Notifies the layout manager that a control requires a measure.

fn invalidate_arrange(&self, control: &Layoutable)

Notifies the layout manager that a control requires an arrange.

fn execute_layout_pass(&self)

Executes a layout pass.

fn execute_initial_layout_pass(&self)

Executes the initial layout pass on a layout root.

fn register_effective_viewport_listener(&self, control: &Layoutable)

Registers a control as wanting to receive effective viewport notifications.

fn unregister_effective_viewport_listener(&self, control: &Layoutable)

Unregisters a control from receiving effective viewport notifications.

fn dispose(&self)

Releases the layout manager.

fn as_bring_into_view_layout_manager( &self, ) -> Option<&dyn IBringIntoViewLayoutManager>

The layout manager viewed as one that handles bring-into-view requests, if it does.