Merge pull request #117 from DeveloperAcademy-POSTECH/fix/#99

[#99] 간선 삭제 시 inputPoint isLinked 수정 안되는 버그 수정

Author: chongin12

LabDuck/Model/KPBoard.swift

@@ -51,6 +51,19 @@ struct KPBoard: Identifiable {
         self.edges.removeAll { edge in
             edge.id == edgeID
         }
+        self.checkIsLinked()
+    }
+
+    public mutating func checkIsLinked() {
+        self.nodes.enumerated().forEach { index, node in
+            node.inputPoints.enumerated().forEach { inputPointIndex, inputPoint in
+                if self.edges.contains(where: { $0.sinkID == inputPoint.id }) {
+                    self.nodes[index].inputPoints[inputPointIndex].isLinked = true
+                } else {
+                    self.nodes[index].inputPoints[inputPointIndex].isLinked = false
+                }
+            }
+        }
     }
 
     public mutating func addNode(_ node: KPNode) {

LabDuck/Model/KPBoardDocument.swift

@@ -300,19 +300,19 @@ extension KPBoardDocument {
 
         withAnimation {
             self.board.removeEdge(edgeID)
+            self.board.checkIsLinked()
         }
 
         undoManager?.registerUndo(withTarget: self) { doc in
             doc.replaceEdges(oldEdges, undoManager: undoManager)
-            
-            
         }
     }
 
     func replaceEdges(_ edges: [KPEdge], undoManager: UndoManager?, animation: Animation? = .default) {
         let oldEdges = self.board.edges
 
         self.board.edges = edges
+        self.board.checkIsLinked()
 
         undoManager?.registerUndo(withTarget: self) { doc in
             doc.replaceEdges(oldEdges, undoManager: undoManager, animation: animation)