make sure Redo is invisible if theres nothing to redo

2018-02-12 16:09:07 +01:00 · 2018-02-12 16:09:07 +01:00 · d2b219201a
parent 8386dd4286
commit d2b219201a
1 changed files with 5 additions and 0 deletions
--- 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)