Add topic filter

backend/src/Model/RingBuffer.ts

@@ -10,9 +10,19 @@ export class RingBuffer<T extends Lengthwise> {
   private start: number = 0
   private end: number = 0
 
-  constructor(capacity: number, maxItems = Infinity) {
+  constructor(capacity: number, maxItems = Infinity, ringBuffer?: RingBuffer<T>) {
     this.capacity = capacity
     this.maxItems = maxItems
+
+    if (ringBuffer) {
+      this.items = ringBuffer.toArray()
+      this.end = this.items.length
+      this.usage = this.items.length
+    }
+  }
+
+  public clone(): RingBuffer<T> {
+    return new RingBuffer(this.capacity, this.maxItems, this)
   }
 
   public toArray() {

backend/src/Model/TreeNode.ts

@@ -16,6 +16,17 @@ export class TreeNode {
   private cachedLeafes?: TreeNode[]
   private cachedLeafMessageCount?: number
 
+  public unconnectedClone() {
+    const node = new TreeNode()
+    node.message = this.message
+    node.mqttMessage = this.mqttMessage
+    node.messageHistory = this.messageHistory.clone()
+    node.messages = this.messages
+    node.lastUpdate = this.lastUpdate
+
+    return node
+  }
+
   constructor(sourceEdge?: Edge, message?: Message) {
     if (sourceEdge) {
       this.sourceEdge = sourceEdge

backend/src/Model/TreeNodeFactory.ts

@@ -5,21 +5,29 @@ interface HasLength {
 }
 
 export abstract class TreeNodeFactory {
-  public static fromEdgesAndValue<T extends HasLength>(edgeNames: string[], value?: T): TreeNode {
+  public static insertNodeAtPosition(edgeNames: string[], node: TreeNode) {
     let currentNode: TreeNode = new Tree()
+    let edge
     for (const edgeName of edgeNames) {
-      const edge = new Edge(edgeName)
-      const newNode = new TreeNode(edge)
-      edge.target = newNode
+      edge = new Edge(edgeName)
       currentNode.addEdge(edge)
-      currentNode = newNode
+      currentNode = new TreeNode(edge)
+      edge.target = currentNode
     }
+    node.sourceEdge = edge
+    node.sourceEdge!.target = node
+  }
 
-    currentNode.setMessage({
+  public static fromEdgesAndValue<T extends HasLength>(edgeNames: string[], value?: T): TreeNode {
+    const node = new TreeNode()
+    node.setMessage({
       value,
       length: value ? value.length : 0,
       received: new Date(),
     })
-    return currentNode
+
+    this.insertNodeAtPosition(edgeNames, node)
+
+    return node
   }
 }