fix: fix bug with empty key field

Author: RoketFlame

app/src/main/kotlin/app/Editor.kt

@@ -100,21 +100,21 @@ fun Menu(
             horizontalArrangement = Arrangement.SpaceAround
         ) {
             Button(onClick = {
-                onAdd(keyString.toInt(), valueString)
+                if (keyString.isNotEmpty()) onAdd(keyString.toInt(), valueString)
                 keyString = ""
                 valueString = ""
             }) {
                 Icon(Icons.Default.Add, contentDescription = "Add")
             }
             Button(onClick = {
-                onContains(keyString.toInt())
+                if (keyString.isNotEmpty()) onContains(keyString.toInt())
                 keyString = ""
                 valueString = ""
             }) {
                 Icon(Icons.Default.Search, contentDescription = "Contains")
             }
             Button(onClick = {
-                onDelete(keyString.toInt())
+                if (keyString.isNotEmpty()) onDelete(keyString.toInt())
                 keyString = ""
                 valueString = ""
             }) {

app/src/main/kotlin/app/graph/DrawableNode.kt

@@ -1,6 +1,6 @@
 /*
- * Copyright (c) 2023 teemEight
- * SPDX-License-Identifier: Apache-2.0
+ * Copyright (c) 2023 teem-4
+ * SPDX-License-Identifier: MIT
  */
 
 package app.graph

app/src/main/kotlin/app/graph/GraphLine.kt

@@ -1,6 +1,6 @@
 /*
- * Copyright (c) 2023 teemEight
- * SPDX-License-Identifier: Apache-2.0
+ * Copyright (c) 2023 teem-4
+ * SPDX-License-Identifier: MIT
  */
 
 package app.graph

app/src/main/kotlin/app/graph/GraphNode.kt

@@ -1,6 +1,6 @@
 /*
- * Copyright (c) 2023 teemEight
- * SPDX-License-Identifier: Apache-2.0
+ * Copyright (c) 2023 teem-4
+ * SPDX-License-Identifier: MIT
  */
 
 package app.graph

app/src/main/kotlin/app/graph/GraphState.kt

@@ -1,6 +1,6 @@
 /*
- * Copyright (c) 2023 teemEight
- * SPDX-License-Identifier: Apache-2.0
+ * Copyright (c) 2023 teem-4
+ * SPDX-License-Identifier: MIT
  */
 
 package app.graph

app/src/main/kotlin/app/graph/ScreenZoom.kt

@@ -1,6 +1,6 @@
 /*
- * Copyright (c) 2023 teemEight
- * SPDX-License-Identifier: Apache-2.0
+ * Copyright (c) 2023 teem-4
+ * SPDX-License-Identifier: MIT
  */
 
 package app.graph

app/src/main/kotlin/app/graph/TreeGraph.kt

@@ -1,6 +1,6 @@
 /*
- * Copyright (c) 2023 teemEight
- * SPDX-License-Identifier: Apache-2.0
+ * Copyright (c) 2023 teem-4
+ * SPDX-License-Identifier: MIT
  */
 
 package app.graph