17 lines
716 B
Rust
17 lines
716 B
Rust
//! Various traits related to controllers opting in to autolayout routines and support for view
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//! heirarchies.
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use objc::runtime::Object;
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use objc_id::ShareId;
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/// A trait that view wrappers must conform to. Enables managing the subview tree.
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pub trait Layout {
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/// Returns a reference to the backing Objective-C layer. This is optional, as we try to keep
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/// the general lazy-loading approach Cocoa has. This may change in the future, and in general
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/// this shouldn't affect your code too much (if at all).
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fn get_backing_node(&self) -> ShareId<Object>;
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/// This trait should implement adding a view to the subview tree for a given view.
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fn add_subview<V: Layout>(&self, _view: &V);
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}
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