Export UI handlers for reuse in other tools (#113)

* export UI handlers for reuse in other tools

* bump jotframe to fix cursor issues at frame close

internal/ui/common/spinner.go

@@ -0,0 +1,72 @@
+package common
+
+import (
+	"strings"
+	"sync"
+)
+
+// TODO: move me to a common module (used in multiple repos)
+
+const (
+	SpinnerCircleOutlineSet = "◜◠◯◎◉●◉◎◯◡◞"
+	SpinnerCircleSet        = "◌◯◎◉●◉◎◯"
+	SpinnerDotSet           = "⠋⠙⠹⠸⠼⠴⠦⠧⠇⠏"
+	SpinnerHorizontalBarSet = "▉▊▋▌▍▎▏▎▍▌▋▊▉"
+	SpinnerVerticalBarSet   = "▁▃▄▅▆▇█▇▆▅▄▃▁"
+	SpinnerDoubleBarSet     = "▁▂▃▄▅▆▇█▉▊▋▌▍▎▏▏▎▍▌▋▊▉█▇▆▅▄▃▂▁"
+	SpinnerArrowSet         = "←↖↑↗→↘↓↙"
+)
+
+var SpinnerCircleDotSet = []string{
+	"⠈⠁",
+	"⠈⠑",
+	"⠈⠱",
+	"⠈⡱",
+	"⢀⡱",
+	"⢄⡱",
+	"⢄⡱",
+	"⢆⡱",
+	"⢎⡱",
+	"⢎⡰",
+	"⢎⡠",
+	"⢎⡀",
+	"⢎⠁",
+	"⠎⠁",
+	"⠊⠁",
+}
+
+type Spinner struct {
+	index   int
+	charset []string
+	lock    sync.Mutex
+}
+
+func NewSpinner(charset string) Spinner {
+	return Spinner{
+		charset: strings.Split(charset, ""),
+	}
+}
+
+func NewSpinnerFromSlice(charset []string) Spinner {
+	return Spinner{
+		charset: 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
+}