Expand current selection to include neighbors by pressing CTRL+SHIFT+UP

frontend/src/Metamaps/Control.js

@@ -20,6 +20,21 @@ const Control = {
     node.setData('dim', 30, 'current')
     Selected.Nodes.push(node)
   },
+  selectNeighbors: function() {
+    if(Selected.Nodes.length > 0){
+      //For each selected node, select all connected node and the synapses too
+      Selected.Nodes.forEach((item) => {
+        if(Visualize.mGraph.graph.getNode(item.id).adjacencies){
+          for(var adjID in Visualize.mGraph.graph.getNode(item.id).adjacencies){
+            Control.selectNode(Visualize.mGraph.graph.getNode(adjID))
+            Control.selectEdge(Visualize.mGraph.graph.getNode(item.id).adjacencies[adjID])
+          }
+        }
+      })
+      
+      Visualize.mGraph.plot()
+    }
+  },
   deselectAllNodes: function() {
     var l = Selected.Nodes.length
     for (var i = l - 1; i >= 0; i -= 1) {

frontend/src/Metamaps/Listeners.js

@@ -31,6 +31,11 @@ const Listeners = {
         case 27: // if esc key is pressed
           JIT.escKeyHandler()
           break
+        case 38: // if UP key is pressed
+          if(e.ctrlKey && e.shiftKey){
+            Control.selectNeighbors()
+          }
+          break
         case 46: // if DEL is pressed
           if(e.target.tagName !== "INPUT" && e.target.tagName !== "TEXTAREA" && (Selected.Nodes.length + Selected.Edges.length) > 0){
             e.preventDefault()