[SOLVED] Node traversal using TreeViewer and SelectionEvent

[xcallmejudasx]

I have 2 drop down menus that I want to auto fill(Server and Target) with information from the current node selected. Let's say I have

+Server
     +Westchase
           -Dev
           -Stage
           -Prod
     +Orange
           -Dev
           -Stage
           -Prod    //I double click this node

If I double click on Prod it opens up my EditTargetView. Right now my code has you pick a server and target using drop down menus

		//Server Dropdown
		new Label(banner, SWT.NONE).setText("Servers:");
	    final Combo serverCombo = new Combo(banner, SWT.READ_ONLY);
	    serverCombo.setBounds(50, 50, 400, 65);
	    final Server[] servers = ServerGroup.getChildren();
	    final String[] serverNames = new String[servers.length];
	    for(int i = 0; i < servers.length; i++){
	    	serverNames[i] = servers[i].getName(); 
	    }
	    serverCombo.setItems(serverNames);
	    
		//Target Dropdown
	    new Label(banner, SWT.NONE).setText("Targets:");
	    final Combo targetCombo = new Combo(banner, SWT.READ_ONLY);
	    targetCombo.setBounds(50, 120, 300, 65);
	    
	    //creates the list for Target dropdown
	    serverCombo.addSelectionListener(new SelectionAdapter(){
	    	public void widgetSelected(SelectionEvent event){
	    		if (serverCombo.getSelectionIndex()== -1){
	    			oldDirectory.setText("");
	    		}
	    		else{
	    			String testString = serverCombo.getItem(serverCombo.getSelectionIndex());
	    			Server[] checkServer = ServerGroup.getChildren();
	    				for(int i = 0; i<checkServer.length; i++){
	    					if(testString.equalsIgnoreCase(checkServer[i].getName())){
	    						theServer = checkServer[i];
	    						break;
	    					}
	    				}	
					final Target[] targets = theServer.getChildren();   
					
	    			//adds the selected servers children to the target combo
	    			final String[] targetNames = new String[3];
	    			for(int x = 0; x < targets.length; x++){
						targetNames[x] = targets[x].getName();
					}
	    			targetCombo.setItems(targetNames);
					targetCombo.addSelectionListener(new SelectionAdapter(){
						public void widgetSelected(SelectionEvent event){
							if(targetCombo.getSelectionIndex() == -1){
								oldDirectory.setText("");
							}
							else{
								Object firstElement = targetCombo.getItem(targetCombo.getSelectionIndex());
								String testString = targetCombo.getItem(targetCombo.getSelectionIndex());
								
								for(int x = 0; x<targetNames.length; x++){
									if(testString.equalsIgnoreCase(targetNames[x])){
										oldDirectory.setText(targets[x].getDirectory());
									}
								}
							}
						}
					});
	    		}
	    	}
	    });

but I need it to auto-fill in the menu using the node selected and its parent(Orange). I can manage to have it set the Target using

ISelection sel = event.getSelection();
				   Object selObj = ((IStructuredSelection) sel).getFirstElement();

in my double click listener but I've never used a hashmap or binary tree before so I have no idea how to navigate through the TreeViewer to get the parent. Where should I start?

[xcallmejudasx]

I cheated but it works.

Object someObjectClass = ((IStructuredSelection) event.getSelection()).getFirstElement().getClass();
				   
				   if(someObjectClass.toString().equalsIgnoreCase("class groups.Target")){
					   if(((Target) selObj).getServerParent() != null){
						   server = ((Target) selObj).getServerParent();   
						   System.out.println(server);
					   }
					   else if(((Target) selObj).getAssetParent() != null){
						   asset = ((Target) selObj).getAssetParent();
						   System.out.println(asset);
					   }   
				   }