public class ClientContext {
private List<Pizza> pizzas;
public void add(Pizza p) {
pizzas.add(p);
notifyAllListeners();
}
public void addPizzaListener(PizzaListener l){...}
public void notifyAllListeners(){for(PizzaListener l : listeners){l.notifyPizzasChange(); }}
}
..then on your GUI code...:
ClientContext.getInstance().addPizzaListener(new PizzaListener(){
public void notifyPizzasChange(){update the list box using ClientContext.getInstance().getPizzas()}
})
Hope this can clarify something... Happy new year to you too!
P/D: in these cases, I often find much more useful to have a Map<String, Pizza> for storing the pizzas by id. Also you can use a cheap map using Js Objects directly instead of java.util.Map implementations, like this: http://code.google.com/p/yuigwt/source/browse/trunk/yuigwt/src/org/sgx/yuigwt/yui/util/LWMap.java
On Tuesday, January 1, 2013 5:29:57 PM UTC+1, Aldin wrote:
--Happy New Year!I can add my new pizza object to ArrayList of pizza objects but how to update the ListBox???
Your idea is not bad. But I don't know how to achieve your logic. I trying to implement your idea without success.
On Mon, Dec 24, 2012 at 6:14 PM, Sebastián Gurin <sebast...@gmail.com> wrote:
If the pizza objects that your client posses are not a very big number, then, instead updating against the server, you can mantain a local collection of pizzas in the client. I mean, write a class like PizzaHome or something like that that contains a collection or a map of pizzas. When you add a new pizza or remove a pizza, make a call to the server for adding/updating and then modify the local pizza home PizzaHome.getInstance().addNew(pizza1). The Pizza home can be an Observable that notify other interested part of your client when the local pizza collection changes. Also from time to time you can synchronize this PizzaHome with your server.
On Monday, December 24, 2012 8:48:00 AM UTC-2, Aldin wrote:I have one idea. But I don't think it is good. To useWhen I insert a new pizza and go to check on combo box (picture ordering) I can't see my new pizza in combo box. The new pizza is inserted in my databases. The pizzas in combo box are from my database.Here you can see:2) and for ordering.1) For inserting new pizzaHi guys,I am developing pizza ordering application. I have two forms:
Timer t = new Timer() { public void run() { //display all pizza from my database every 2 se to combobox } };t.schedule(2000);Any idea for better approach???Thanks--To view this discussion on the web visit https://groups.google.com/d/
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