zng::widget::node

Struct OffsetUiListObserver

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pub struct OffsetUiListObserver<'o>(pub usize, pub &'o mut dyn UiNodeListObserver);
Expand description

Represents an UiNodeListObserver that applies an offset to all indexes.

This type is useful for implementing UiNodeList that are composed of other lists.

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§0: usize§1: &'o mut dyn UiNodeListObserver

Trait Implementations§

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impl UiNodeListObserver for OffsetUiListObserver<'_>

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fn is_reset_only(&self) -> bool

Returns true if this observer does not use the item indexes. Read more
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fn reset(&mut self)

Called when large or unspecified changes happen to the list.
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fn inserted(&mut self, index: usize)

Called when a node is inserted at index.
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fn removed(&mut self, index: usize)

Called when a node is removed from index.
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fn moved(&mut self, removed_index: usize, inserted_index: usize)

Called when a node is removed from removed_index and re-inserted at inserted_index.

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