UIBinder - Link multiple controls to the same event handler

[mgallagher]

So I've got several tabs and a number of controls on each. When a user modifies the value of one of the controls I would like to enable a save button (which otherwise would be disabled).

Is there anyway for me to link multiple controls to the same event handler, such as the value changed event?

[Blama]

Hi mgallagher,

I'm not perfectly sure here, but did you try to use handler objects instead of anonymous classes, so instead of:

widget1.addABCHandler(new ABCHandler() {
	@Override
	public void onABC(ABCEvent event) {
		...
		...
	}
});
widget2.addABCHandler(new ABCHandler() {
	@Override
	public void onABC(ABCEvent event) {
		...
		...
	}
});

use:

ABCHandler myHandler = new ABCHandler() {
	@Override
	public void onABC(ABCEvent event) {
		...
		...
	}
});
widget1.addABCHandler(myHandler);
widget2.addABCHandler(myHandler);
widget3.addABCHandler(myHandler);

?

Best regards,
Blama

[mgallagher]

My thoughts exactly

Great point. I guess what I was hoping was the ability to do something like this:

@UiHandler("txtOne, txtTwo, txtThree")
public void onEditFieldClicked(RecordClickEvent e) {
    SC.say("Value changed");
}

[mgallagher]

Here we go

Worked it out.

So if you want multiple controls to use the same handler with UIBinder this is how:

@UiHandler(value = {"txtText", "selType"})
public void onEditFieldClicked(KeyDownEvent e) {
    SC.say("Key down!");
}