zng::widget::node

Struct WhenUiNodeBuilder

pub struct WhenUiNodeBuilder { /* private fields */ }

Expand description

Builds a node that can be one of multiple options, selected by the first condition that is true, or a fallback default.

When the selected node changes the previous one is deinited and the new one is inited.

The when node delegates everything, children, list and widget to the selected node, it becomes the selected node.

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impl WhenUiNodeBuilder

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pub fn new(default: impl IntoUiNode) -> WhenUiNodeBuilder

New with node that is used when no condition is active.

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pub fn push(&mut self, condition: Var<bool>, node: impl IntoUiNode)

Push a conditional node.

When condition is true and no previous inserted condition is true the node is used.

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pub fn build(self) -> UiNode

Build a node that is always the first true condition or the default.

Auto Trait Implementations§

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impl !UnwindSafe for WhenUiNodeBuilder

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