43 lines
1.1 KiB
Go
43 lines
1.1 KiB
Go
package ui
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import (
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"github.com/gdamore/tcell"
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)
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// Drawable is a UI component that can draw. Unless specified, all methods must
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// only be called from a single goroutine, the UI goroutine.
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type Drawable interface {
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// Called when this renderable should draw itself.
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Draw(ctx *Context)
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// Specifies a function to call when this cell needs to be redrawn. The
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// callback may be called in any goroutine.
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OnInvalidate(callback func(d Drawable))
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// Invalidates the drawable. This can be called from any goroutine.
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Invalidate()
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}
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type Interactive interface {
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// Returns true if the event was handled by this component
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Event(event tcell.Event) bool
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// Indicates whether or not this control will receive input events
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Focus(focus bool)
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}
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type Simulator interface {
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// Queues up the given input events for simulation
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Simulate(events []tcell.Event)
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}
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type DrawableInteractive interface {
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Drawable
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Interactive
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}
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// A drawable which contains other drawables
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type Container interface {
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Drawable
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// Return all of the drawables which are children of this one (do not
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// recurse into your grandchildren).
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Children() []Drawable
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}
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