Re: Cannot config a button press listener outside the initialize method of Bindable

[Roger and Beth Whitcomb]

Hi, welcome to Pivot!

The short answer is, no the "initListeners" code doesn't have to be 
called directly from "initialize" -- it just has to be called from 
"somewhere" before the button is pressed.

From your code it is not clear when/how the "MyPanelController" 
constructor would be called.  If it is ever called (from somewhere) then 
it would work.  But, my guess would be that you don't ever instantiate 
the "MyPanelController" class, or else it only gets instantiated at some 
point after the button is pressed.  So, perhaps you could share a bit 
more of your code so we can understand better.

HTH,
~Roger

On 8/2/14 12:52 PM, ninjathehunter wrote:
Hi

I am writing a GUI app using Pivot.

I have a panel that looks like:

public class MyPanel extends BoxPane implements Bindable {
     @BXML private PushButton myButton = null;

     @Override
     public void initialize(final Map<String, Object> namespace, URL
location, Resources resources) {
     }

     public PushButton getMyButton() {
         return myButton;
     }
}

I have another class which does this:

public class MyPanelController {
     private MyPanel myPanel;
     private Window myWindow;

     public MyPanelController(MyPanel myPanel, Window myWindow) {
         this.myPanel = myPanel;
         this.myWindow = myWindow;
         initListeners();
     }

     private void initListeners() {
         PushButton myButton = view.getMyButton();
         myButton.getButtonPressListeners().add(new ButtonPressListener(){
             @Override
             public void buttonPressed(Button button) {
                 Alert.alert(MessageType.INFO, "Button Clicked!!!",
view.getFrame());
             }
         });
     }
}

With this code, when the button is clicked, the press listner code is not
executed.

However, if I put the same event listner configuration to the initialize
method inside MyPanel, it works:

public class MyPanel extends BoxPane implements Bindable {
     @BXML private PushButton myButton = null;

     @Override
     public void initialize(final Map<String, Object> namespace, URL
location, Resources resources) {
         myButton.getButtonPressListeners().add(new ButtonPressListener(){
             @Override
             public void buttonPressed(Button button) {
                 Alert.alert(MessageType.INFO, "Button Clicked!!!",
view.getFrame());
             }
         });
     }

     public PushButton getMyButton() {
         return myButton;
     }
}

My question is whether the listner handling configuration must be inside the
initialize block for it to work??

Thank you very much.




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