Packets removed when setting a new or loaded graph (#186)

Before setting the graph, the _Packet Manager_ clears all its packets in
transit

Author: Manuel-Pol

src/context.ts

@@ -51,11 +51,10 @@ export class GlobalContext {
   private setNetwork(datagraph: DataGraph, layer: Layer) {
     this.datagraph = datagraph;
     if (this.viewgraph) {
-      this.viewgraph.setDataGraph(datagraph);
-      this.viewgraph.changeCurrLayer(layer);
-    } else {
-      this.viewgraph = new ViewGraph(datagraph, this, layer);
+      this.viewgraph.clearPacketsInTransit();
+      this.viewgraph.clear();
     }
+    this.viewgraph = new ViewGraph(datagraph, this, layer);
     this.setIpGenerator();
     this.setMacGenerator();
   }
@@ -106,9 +105,9 @@ export class GlobalContext {
     return this.datagraph;
   }
 
-  changeViewGraph(selectedLayer: string) {
+  changeLayer(selectedLayer: string) {
     const layer = layerFromName(selectedLayer);
-    this.setNetwork(this.datagraph, layer);
+    this.viewgraph.changeCurrLayer(layer);
   }
 
   pause() {

src/handlers/layerSelectorHandler.ts

@@ -64,7 +64,7 @@ export class LayerHandler {
     }
 
     console.debug(`Layer selected: ${selectedLayer}`);
-    this.ctx.changeViewGraph(selectedLayer);
+    this.ctx.changeLayer(selectedLayer);
     saveToLocalStorage(this.ctx);
     this.leftBar.setButtonsByLayer(selectedLayer);
     deselectElement();

src/types/graphs/viewgraph.ts

@@ -338,6 +338,10 @@ export class ViewGraph {
     });
   }
 
+  clearPacketsInTransit() {
+    this.packetManager.clear();
+  }
+
   hasDevice(id: DeviceId) {
     return this.graph.hasVertex(id);
   }

src/types/packetManager.ts

@@ -21,6 +21,14 @@ export class PacketManager {
     this.packetsInTransit.delete(packetId);
   }
 
+  /**
+   * Deletes each packet in transit.
+   */
+  clear() {
+    const packetsInTransit = Array.from(this.packetsInTransit.values());
+    packetsInTransit.forEach((packet) => packet.delete());
+  }
+
   // SE CAMBIA CAPA (borrar luego)
   //   va paquete por paquete
   //   se fija si el paquete corresponde a la nueva capa (es visible o no)