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package ui
import (
"github.com/gdamore/tcell"
)
type Drawable interface {
// Called when this renderable should draw itself
Draw(ctx *Context)
// Specifies a function to call when this cell needs to be redrawn
OnInvalidate(callback func(d Drawable))
// Invalidates the drawable
Invalidate()
}
type Interactive interface {
// Returns true if the event was handled by this component
Event(event tcell.Event) bool
}
type Simulator interface {
// Queues up the given input events for simulation
Simulate(events []tcell.Event)
}
type DrawableInteractive interface {
Drawable
Interactive
}
// A drawable which contains other drawables
type Container interface {
Drawable
// A list of all drawables which are children of this one (do not recurse
// into your grandchildren).
Children() []Drawable
// Return the "focused" child, or none of no preference. Does not actually
// have to be Interactive. If there is a preferred child, input events will
// be directed to it. If there's no preference, events will be delivered to
// all children.
InteractiveChild() Drawable
}
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