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ApplicationSelectionState

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Struct ApplicationSelectionState 

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pub struct ApplicationSelectionState { /* private fields */ }
Expand description

Selection and hover state.

Both hover and selection are double buffered: Changes from one frame are only visible in the next frame.

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impl ApplicationSelectionState

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pub fn on_frame_start( &mut self, item_retain_condition: impl Fn(&Item) -> bool, fallback_selection: Option<Item>, ) -> SelectionChange<'_>

Called at the start of each frame.

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pub fn on_frame_end(&mut self)

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pub fn set_selection(&mut self, items: impl Into<SetSelection>)

Sets several objects to be selected, updating history as needed.

Clears the selected item context if none was specified.

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pub fn selected_items(&self) -> &ItemCollection

Returns the current selection.

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pub fn hovered_items(&self) -> &ItemCollection

Returns the currently hovered objects.

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pub fn set_hovered(&self, hovered: impl Into<ItemCollection>)

Set the hovered objects. Will be in Self::hovered_items on the next frame.

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pub fn selection_item_contexts(&self) -> impl Iterator<Item = &ItemContext>

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pub fn hovered_item_context(&self) -> Option<&ItemContext>

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pub fn selection_changed(&self) -> Option<SelectionSource>

Returns Some if the selection changed this frame.

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pub fn highlight_for_ui_element(&self, test: &Item) -> HoverHighlight

Trait Implementations§

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impl Default for ApplicationSelectionState

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fn default() -> ApplicationSelectionState

Returns the “default value” for a type. Read more

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