From d2b219201aa7bdb37d766abec75e01d22a68a7fa Mon Sep 17 00:00:00 2001
From: tibbi <tibor@kaputa.sk>
Date: Mon, 12 Feb 2018 16:09:07 +0100
Subject: [PATCH] make sure Redo is invisible if theres nothing to redo

---
 .../main/kotlin/com/simplemobiletools/draw/views/MyCanvas.kt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/app/src/main/kotlin/com/simplemobiletools/draw/views/MyCanvas.kt b/app/src/main/kotlin/com/simplemobiletools/draw/views/MyCanvas.kt
index 5bfc13e..cfa866a 100644
--- a/app/src/main/kotlin/com/simplemobiletools/draw/views/MyCanvas.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/draw/views/MyCanvas.kt
@@ -84,6 +84,11 @@ class MyCanvas(context: Context, attrs: AttributeSet) : View(context, attrs) {
     }
 
     fun redo() {
+        if (mUndonePaths.keys.isEmpty()) {
+            mListener?.toggleRedoVisibility(false)
+            return
+        }
+
         val lastKey = mUndonePaths.keys.last()
         addPath(lastKey, mUndonePaths.values.last())
         mUndonePaths.remove(lastKey)