Split UI from event handling (#448)

* split UI from event handling Signed-off-by: Alex Goodman <wagoodman@gmail.com> * add event loop tests Signed-off-by: Alex Goodman <wagoodman@gmail.com> * use stereoscope cleanup function during signal handling Signed-off-by: Alex Goodman <alex.goodman@anchore.com> * correct error wrapping in packages cmd Signed-off-by: Alex Goodman <alex.goodman@anchore.com> * migrate ui event handlers to ui package Signed-off-by: Alex Goodman <alex.goodman@anchore.com> * clarify command worker input var + remove dead comments Signed-off-by: Alex Goodman <alex.goodman@anchore.com>
2026-11-02 23:46:35 +01:00 · 2021-06-29 18:28:09 +00:00
parent 706322f826
commit 962e82297c
21 changed files with 881 additions and 382 deletions
@@ -0,0 +1,42 @@
+package components
+
+import (
+	"strings"
+	"sync"
+)
+
+// TODO: move me to a common module (used in multiple repos)
+
+const (
+	SpinnerDotSet = "⠋⠙⠹⠸⠼⠴⠦⠧⠇⠏"
+)
+
+type Spinner struct {
+	index   int
+	charset []string
+	lock    sync.Mutex
+}
+
+func NewSpinner(charset string) Spinner {
+	return Spinner{
+		charset: strings.Split(charset, ""),
+	}
+}
+
+func (s *Spinner) Current() string {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	return s.charset[s.index]
+}
+
+func (s *Spinner) Next() string {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+	c := s.charset[s.index]
+	s.index++
+	if s.index >= len(s.charset) {
+		s.index = 0
+	}
+	return c
+}