From f6b8d9903bd4ac889c12d7c5b972fbd2ccde48ee Mon Sep 17 00:00:00 2001
From: Sasha Koshka <sashakoshka@tebibyte.media>
Date: Sun, 6 Nov 2022 14:47:37 -0500
Subject: [PATCH] Return err from Application.Run

---
 application.go         | 36 ++++++++----------------------------
 examples/hello/main.go |  3 ++-
 2 files changed, 10 insertions(+), 29 deletions(-)

diff --git a/application.go b/application.go
index 80c8443..db956eb 100644
--- a/application.go
+++ b/application.go
@@ -21,7 +21,11 @@ func (application *Application) SetTitle (title string) {
 	application.backend.SetTitle(title)
 }
 
-func (application *Application) Run (callback func (application *Application)) {
+func (application *Application) Run (
+	callback func (application *Application),
+) (
+	err error,
+) {
 	// default values for certain parameters
 	width, height := application.Size()
 	if width  < 1 { width  = 80 }
@@ -38,11 +42,11 @@ func (application *Application) Run (callback func (application *Application)) {
 	
 	application.config.padding = 4
 
-	// TODO: instead, return the error
-	var err error
 	application.backend, err = instantiateBackend(application)
-	if err != nil { panic(err.Error()) }
+	if err != nil { return }
 	application.backend.Run(callback)
+
+	return
 }
 
 func (application *Application) Await (timeout time.Duration) (keepRunning bool) {
@@ -69,27 +73,3 @@ func (application *Application) Resized () (resized bool) {
 	resized = application.backend.Resized()
 	return
 }
-
-
-// // updateWindowSize updates the window size according to the buffer size.
-// func (application *Application) updateWindowSize () {
-	// if application.window == nil { return }
-	// application.window.SetBounds(application.calculateWindowSize())
-// }
-
-// updateBufferSize updats the buffer size according to the window size.
-// func (application *Application) updateBufferSize () {
-	// if application.window == nil {
-		// panic("call to application.updateBufferSize before window exists")
-	// }
-	// 
-	// windowBounds := application.window.Bounds().Max
-		// 
-	// if windowBounds != application.previousBounds {
-		// application.previousBounds = windowBounds
-		// application.boundsDirty    = true
-		// application.DamageBuffer.SetSize (
-			// int(windowBounds.X) / application.metrics.cellWidth,
-			// int(windowBounds.Y) / application.metrics.cellHeight)
-	// }
-// }
diff --git a/examples/hello/main.go b/examples/hello/main.go
index da5b229..e48f2dd 100644
--- a/examples/hello/main.go
+++ b/examples/hello/main.go
@@ -7,7 +7,8 @@ import _ "git.tebibyte.media/sashakoshka/stone/backends/pixel"
 
 func main () {
 	application := stone.Application { }
-	application.Run(run)
+	err := application.Run(run)
+	if err != nil { panic(err) }
 }
 
 func run (application *stone.Application) {