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TreeRef

freya_native_core::tree

Trait TreeRef 

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pub trait TreeRef {
    // Required methods
    fn parent_id(&self, id: NodeId) -> Option<NodeId>;
    fn children_ids(&self, id: NodeId) -> Vec<NodeId>;
    fn shadow_tree(&self, id: NodeId) -> Option<&ShadowTree>;
    fn slot_for_light_tree(&self, id: NodeId) -> Option<NodeId>;
    fn root_for_light_tree(&self, id: NodeId) -> Option<NodeId>;
    fn height(&self, id: NodeId) -> Option<u16>;
    fn contains(&self, id: NodeId) -> bool;

    // Provided methods
    fn parent_id_advanced(
        &self,
        id: NodeId,
        enter_shadow_dom: bool,
    ) -> Option<NodeId> { ... }
    fn children_ids_advanced(
        &self,
        id: NodeId,
        enter_shadow_dom: bool,
    ) -> Vec<NodeId> { ... }
}
Expand description

A immutable view of a tree.

Required Methods§

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fn parent_id(&self, id: NodeId) -> Option<NodeId>

The parent id of the node.

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fn children_ids(&self, id: NodeId) -> Vec<NodeId>

The children ids of the node.

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fn shadow_tree(&self, id: NodeId) -> Option<&ShadowTree>

The shadow tree tree under the node.

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fn slot_for_light_tree(&self, id: NodeId) -> Option<NodeId>

The node that contains the shadow tree this node is a slot for

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fn root_for_light_tree(&self, id: NodeId) -> Option<NodeId>

The node that contains the shadow tree this node is a root of

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fn height(&self, id: NodeId) -> Option<u16>

The height of the node.

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fn contains(&self, id: NodeId) -> bool

Returns true if the node exists.

Provided Methods§

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fn parent_id_advanced( &self, id: NodeId, enter_shadow_dom: bool, ) -> Option<NodeId>

Get the id of the parent of the current node, if enter_shadow_dom is true and the current node is a shadow root, the node the shadow root is attached to will be returned

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fn children_ids_advanced( &self, id: NodeId, enter_shadow_dom: bool, ) -> Vec<NodeId>

Get the ids of the children of the current node, if enter_shadow_dom is true and the current node is a shadow slot, the ids of the nodes under the node the shadow slot is attached to will be returned

Dyn Compatibility§

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors§