DualListField help!

[sasadorian]

Hi,
I am looking at this example: http://www.sencha.com/examples/#Exam...:duallistfield

Can anyone tell me where i can find "StateProperties" and "PropertyAccess"?

My main goal is to have a working dual list with Strings that I provide. However, I cant get that working, so I need to look at the guts of StateProperties and see how its used.

Help!

[Colin Alworth]

PropertyAccess is part of GXT itself, it can be found at com.sencha.gxt.data.shared.PropertyAccess<T> -- and StateProperties is that the top of that file (right after public class DualListFieldExample):

  interface StateProperties extends PropertyAccess<State> {
    ModelKeyProvider<State> abbr();
 
    LabelProvider<State> name();
 
    @Path("name")
    ValueProvider<State, String> nameProp();
  }

[sasadorian]

Thanks for the reply.

By any chance, do you know an example that I can look it where it just simply uses "Strings" instead of PropertyAccess?

[sasadorian]

this is what i mean by using "Strings":

SimpleComboBox<String> scb = new SimpleComboBox<String>(new StringLabelProvider<String>());
scb.add("Item1");
scb.add("Item2");

Same concept, but for DualListField instead...

[Colin Alworth]

There is a class called StringLabelProvider in the com.sencha.gxt.data.shared package - no generics, it assumes you are passing in a string and will return a string.

[sasadorian]

can you please help me setup?

DualListField<String, String> field = new DualListField<String, String>(?, ?, ?, new TextCell());

[Colin Alworth]

From the javadocs:

   * @param fromStore the store containing the base set of items
   * @param toStore the store containing the items selected by the user
   * @param valueProvider the interface to {@code <M>}
   * @param cell displays the data in the list view (e.g. {@link TextCell}).

You need to create and pass in a ListStore<M> for the left (the 'from' list) and for the right (the 'to' list). You also need to tell the DualListField<M,T> how it can read items from those M items and get out a T value that you can pass into the Cell<T>.

What kinds of objects is the DualListField representing? How are you trying to draw them - just as plain text? Text and an Icon? These parameters let you control these details and more.