Trait druid::text::ImeHandlerRef
source · pub trait ImeHandlerRef {
// Required methods
fn is_alive(&self) -> bool;
fn acquire(&self, mutable: bool) -> Option<Box<dyn InputHandler + 'static>>;
fn release(&self) -> bool;
}
Expand description
A trait for input handlers registered by widgets.
A widget registers itself as accepting text input by calling
LifeCycleCtx::register_text_input
while handling the
LifeCycle::WidgetAdded
event.
The widget does not explicitly deregister afterwards; rather anytime
the widget tree changes, druid
will call is_alive
on each registered
ImeHandlerRef
, and deregister those that return false
.