Re: UiHandler and how to do it right?

2011-09-14 Thread Volker 
Thanks for the clarification!

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UiHandler and how to do it right?

2011-09-08 Thread Volker 
I try to get a button working using UiBinder with UiHandler.
Unfortunately the screen shows up fine but the button does not react
on any clicks. While searching for some good examples how to use the
UiHandler annotation I got confused.

The tutorial on the official gwt site says:
@UiHandler(button)
void handleClick(ClickEvent e) {
Window.alert(Hello, AJAX);
}
http://code.google.com/intl/de-DE/webtoolkit/doc/latest/DevGuideUiBinder.html

The UiHandler Java doc point to some test code telling me:
@UiHandler({buttonClick, labelClick})
void doClick(ClickEvent event) {
eventMessage(event);
}

http://code.google.com/p/google-web-toolkit/source/browse/releases/2.0/user/test/com/google/gwt/uibinder/test/client/HandlerDemo.java?spec=svn6557r=6557

Searching this group I got totaly lost, because it looks like some
implicit naming convention:
@UiHandler(lastName)
void onLastNameBlur(BlurEvent event) {
  // code from UpperCase goes here
}
http://groups.google.com/group/google-web-toolkit/browse_thread/thread/d6e21d5b4c1b4f00?tvc=2q=UiHandler

Thanks in advance for any clarification.

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Re: UiHandler and how to do it right?

2011-09-08 Thread Steve Wall 
The value to the @UiHandler annotation is the ui:field value in your 
UiBinder.  So in the first example, they Button must have been named 
button.

There is no implicit naming convention on the method names.  The argument to 
that method is what determines when that method runs (e.g. on a ClickEvent, 
or on a BlurEvent, etc.).

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Re: UiHandler and how to do it right?

2011-09-08 Thread Ben Munge 
Do you have a corresponding field in your UIBinder ui.xml with the
same ui:field property?

For example, in your ui.xml you should have:

g:Button ui:field=buttonClick Me/g:Button

In the corresponding Java class you should have:

@UiField
Button button;

@UiHandler(button)
void clickButton(ClickEvent e) {
Window.alert(Hello World);
}


As Steve said, the method name on the UiHandler can be anything. The
parameter to the method determines the event being handled. As long as
your ui:field property, the variable name on the UIField, and the
quoted text on the @UiHandler annotation match everything should work
fine.


On Sep 8, 6:55 am, Volker volker.kinderm...@googlemail.com wrote:
 I try to get a button working using UiBinder with UiHandler.
 Unfortunately the screen shows up fine but the button does not react
 on any clicks. While searching for some good examples how to use the
 UiHandler annotation I got confused.

 The tutorial on the official gwt site says:
 @UiHandler(button)
 void handleClick(ClickEvent e) {
     Window.alert(Hello, AJAX);}

 http://code.google.com/intl/de-DE/webtoolkit/doc/latest/DevGuideUiBin...

 The UiHandler Java doc point to some test code telling me:
 @UiHandler({buttonClick, labelClick})
 void doClick(ClickEvent event) {
     eventMessage(event);

 }

 http://code.google.com/p/google-web-toolkit/source/browse/releases/2

 Searching this group I got totaly lost, because it looks like some
 implicit naming convention:
 @UiHandler(lastName)
 void onLastNameBlur(BlurEvent event) {
   // code from UpperCase goes here}

 http://groups.google.com/group/google-web-toolkit/browse_thread/threa...

 Thanks in advance for any clarification.

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