From 4b64a7cbde104f4d2864aa16b768af025891788e Mon Sep 17 00:00:00 2001
From: Christian Rocha <christian@rocha.is>
Date: Fri, 17 Jan 2020 23:27:54 -0500
Subject: [PATCH] Blink cursor

---
 examples/input/main.go | 35 +++++++++++++++++++++--------------
 input/input.go         | 15 ++++++---------
 2 files changed, 27 insertions(+), 23 deletions(-)

diff --git a/examples/input/main.go b/examples/input/main.go
index 24ac4c9..69023cc 100644
--- a/examples/input/main.go
+++ b/examples/input/main.go
@@ -25,8 +25,16 @@ func main() {
 		},
 		update,
 		view,
-		nil,
-		//[]tea.Sub{input.Blink},
+		[]tea.Sub{
+			// Just hand off the subscription to the input component
+			func(m tea.Model) tea.Msg {
+				if m, ok := m.(model); ok {
+					return input.Blink(m.input)
+				}
+				// TODO: return error
+				return nil
+			},
+		},
 	)
 
 	if err := p.Start(); err != nil {
@@ -36,7 +44,6 @@ func main() {
 
 func update(msg tea.Msg, mdl tea.Model) (tea.Model, tea.Cmd) {
 	var cmd tea.Cmd
-
 	m, _ := mdl.(model)
 
 	switch msg := msg.(type) {
@@ -47,22 +54,22 @@ func update(msg tea.Msg, mdl tea.Model) (tea.Model, tea.Cmd) {
 		case "esc":
 			return m, tea.Quit
 		}
-
-	case input.CursorBlinkMsg:
-		return input.Update(msg, m.input)
 	}
 
 	m.input, cmd = input.Update(msg, m.input)
 	return m, cmd
 }
 
-func view(mdl tea.Model) string {
-	m, _ := mdl.(model)
-	help := "(esc to exit)"
+func view(m tea.Model) string {
+	if m, ok := m.(model); ok {
+		help := "(esc to exit)"
 
-	return fmt.Sprintf(
-		"What’s your favorite Pokémon?\n\n%s\n\n%s",
-		input.View(m.input),
-		help,
-	)
+		return fmt.Sprintf(
+			"What’s your favorite Pokémon?\n\n%s\n\n%s",
+			input.View(m.input),
+			help,
+		)
+	}
+	// TODO: return error
+	return ""
 }
diff --git a/input/input.go b/input/input.go
index cb39e56..07f5b48 100644
--- a/input/input.go
+++ b/input/input.go
@@ -27,9 +27,7 @@ func DefaultModel() Model {
 	}
 }
 
-func Update(msg tea.Msg, model tea.Model) (Model, tea.Cmd) {
-	m, _ := model.(Model)
-
+func Update(msg tea.Msg, m Model) (Model, tea.Cmd) {
 	switch msg := msg.(type) {
 
 	case tea.KeyMsg:
@@ -52,15 +50,14 @@ func Update(msg tea.Msg, model tea.Model) (Model, tea.Cmd) {
 func View(model tea.Model) string {
 	m, _ := model.(Model)
 	cursor := m.Cursor
-	//if m.Blink {
-	//cursor = m.HiddenCursor
-	//}
+	if m.Blink {
+		cursor = m.HiddenCursor
+	}
 	return m.Prompt + m.Value + cursor
 }
 
 func Blink(model tea.Model) tea.Msg {
-	//m, _ := model.(Model)
-	//time.Sleep(m.BlinkSpeed)
-	time.Sleep(time.Second)
+	m, _ := model.(Model)
+	time.Sleep(m.BlinkSpeed)
 	return CursorBlinkMsg{}
 }