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-rw-r--r--lib/ui/interfaces.go9
-rw-r--r--lib/ui/ui.go2
2 files changed, 7 insertions, 4 deletions
diff --git a/lib/ui/interfaces.go b/lib/ui/interfaces.go
index d27afe2..0cdffc1 100644
--- a/lib/ui/interfaces.go
+++ b/lib/ui/interfaces.go
@@ -4,12 +4,15 @@ import (
"github.com/gdamore/tcell"
)
+// Drawable is a UI component that can draw. Unless specified, all methods must
+// only be called from a single goroutine, the UI goroutine.
type Drawable interface {
- // Called when this renderable should draw itself
+ // Called when this renderable should draw itself.
Draw(ctx *Context)
- // Specifies a function to call when this cell needs to be redrawn
+ // Specifies a function to call when this cell needs to be redrawn. The
+ // callback may be called in any goroutine.
OnInvalidate(callback func(d Drawable))
- // Invalidates the drawable
+ // Invalidates the drawable. This can be called from any goroutine.
Invalidate()
}
diff --git a/lib/ui/ui.go b/lib/ui/ui.go
index 9d9a5da..91a26da 100644
--- a/lib/ui/ui.go
+++ b/lib/ui/ui.go
@@ -10,7 +10,7 @@ import (
type UI struct {
Content DrawableInteractive
- exit atomic.Value
+ exit atomic.Value // bool
ctx *Context
screen tcell.Screen