elements::hooks — event-callback registration
Hooks register callbacks for UI events (resize, keyboard, paste, focus,
selection). Port status: mostly scaffolded. Only on_resize actually
invokes its callback; the rest are empty stubs awaiting renderer event
streams (each carries a TODO: wire to renderer … comment).
Implemented
pub fn on_resize<B: Backend + 'static>(
renderer: &Renderer<B>,
mut callback: impl FnMut(u16, u16) + 'static,
)Immediately invokes callback(width, height) once with the renderer’s
configured size (from renderer.config()).
Stubs (empty bodies)
| Hook | Signature | Intended behavior |
|---|---|---|
on_keyboard |
(&impl HasKeyInput, impl Fn(&str) + 'static) |
Key events. |
on_paste |
(&impl HasKeyInput, impl Fn(&str) + 'static) |
Paste events. |
on_focus |
(&Renderer<B>, impl Fn() + 'static) |
Focus gained. |
on_blur |
(&Renderer<B>, impl Fn() + 'static) |
Focus lost. |
on_selection |
(&Renderer<B>, impl Fn(&Selection) + 'static) |
Selection changed. |
Placeholder types
pub struct Timeline; // animation timeline placeholder
pub trait HasKeyInput { fn on_key(&mut self, _key: &str) {} } // key-input markerThese exist so the API shape is stable while the underlying renderer input
support lands. For real input handling today, drive your widgets from your
own event loop (e.g. the InputRenderable/TextareaRenderable methods in
core::renderables) rather than
these hooks.