From d832eab20cfa1cd9353a57e4218632af455b32ca Mon Sep 17 00:00:00 2001
From: Jesse Duffield <jessedduffield@gmail.com>
Date: Sat, 21 Jul 2018 18:37:00 +1000
Subject: [PATCH] loading animation for confirmation view

---
 gui.go          | 26 ++++++++++++++++++++++++++
 stash_panel.go  |  7 +++----
 view_helpers.go |  4 +++-
 3 files changed, 32 insertions(+), 5 deletions(-)

diff --git a/gui.go b/gui.go
index e01bfa7ef..d5f297e17 100644
--- a/gui.go
+++ b/gui.go
@@ -6,6 +6,7 @@ import (
 	// "io/ioutil"
 
 	"log"
+	"strings"
 	"time"
 
 	// "strings"
@@ -278,6 +279,25 @@ func fetch(g *gocui.Gui) {
 	refreshStatus(g)
 }
 
+func loader() string {
+	characters := "|/-\\"
+	now := time.Now()
+	nanos := now.UnixNano()
+	index := nanos / 50000000 % int64(len(characters))
+	devLog(characters[index : index+1])
+	return characters[index : index+1]
+}
+
+func updateLoader(g *gocui.Gui) {
+	if confirmationView, _ := g.View("confirmation"); confirmationView != nil {
+		content := trimmedContent(confirmationView)
+		if strings.Contains(content, "...") {
+			staticContent := strings.Split(content, "...")[0] + "..."
+			renderString(g, "confirmation", staticContent+" "+loader())
+		}
+	}
+}
+
 func run() {
 	g, err := gocui.NewGui(gocui.OutputNormal)
 	if err != nil {
@@ -292,6 +312,12 @@ func run() {
 		}
 	}()
 
+	go func() {
+		for range time.Tick(time.Millisecond * 10) {
+			updateLoader(g)
+		}
+	}()
+
 	g.SetManagerFunc(layout)
 
 	if err := keybindings(g); err != nil {
diff --git a/stash_panel.go b/stash_panel.go
index 2f80b0f0b..09b092fbb 100644
--- a/stash_panel.go
+++ b/stash_panel.go
@@ -63,10 +63,9 @@ func handleStashPop(g *gocui.Gui, v *gocui.View) error {
 }
 
 func handleStashDrop(g *gocui.Gui, v *gocui.View) error {
-  return createConfirmationPanel(g, v, "Stash drop", "Are you sure you want to drop this stash entry?", func(g *gocui.Gui, v *gocui.View) error {
-    return stashDo(g, v, "drop")
-  }, nil)
-  return nil
+	return createConfirmationPanel(g, v, "Stash drop", "Are you sure you want to drop this stash entry?", func(g *gocui.Gui, v *gocui.View) error {
+		return stashDo(g, v, "drop")
+	}, nil)
 }
 
 func stashDo(g *gocui.Gui, v *gocui.View, method string) error {
diff --git a/view_helpers.go b/view_helpers.go
index dd43aeade..b822e73e2 100644
--- a/view_helpers.go
+++ b/view_helpers.go
@@ -162,8 +162,10 @@ func correctCursor(v *gocui.View) error {
 func renderString(g *gocui.Gui, viewName, s string) error {
 	g.Update(func(*gocui.Gui) error {
 		v, err := g.View(viewName)
+		// just in case the view disappeared as this function was called, we'll
+		// silently return if it's not found
 		if err != nil {
-			panic(err)
+			return nil
 		}
 		v.Clear()
 		fmt.Fprint(v, s)