you can do the same thing with wicket ie. on 5th char typed,make a ajaxcallback to wicket,
1)you need to add behavior to component and implement it's respond method the way it suits your need. 2)in the js part you will make a callback on 5th char typed,callbackurl you will get from the behavior you added to the component. take a look at http://cwiki.apache.org/confluence/display/WICKET/Calling+Wicket+from+Javascript On Sat, Feb 13, 2010 at 2:15 AM, Steven Haines <lyg...@yahoo.com> wrote: > Hi, > > I > would like to add AJAX behavior to an application that sends an update > to my application after a certain number of characters have been typed. > For example, if the user is entering a zipcode, I would like a callback > to my application to be made after the user enters the fifth character. > > I've > written code using OnChangeAjaxBehavior that sends messages back to my > application after every character has been typed, such as the following: > > final TextField<String> zipcodeField = new TextField<String>( "zipcode" > ); > form.add( zipcodeField.setRequired( true ) ); > OnChangeAjaxBehavior zipcodeUpdated = new OnChangeAjaxBehavior() { > @Override > protected void onUpdate( AjaxRequestTarget target ) { > System.out.println( "Zipcode value: " + > zipcodeField.getDefaultModelObjectAsString() ); > } > }; > zipcodeField.add( zipcodeUpdated ); > > > I > could check to see the size of the zipcodeField (in this example), but > it makes my application more chatty than it needs to be. I also tried > using onblur, which works fine, but does not satisfy my business > requirements: > > final TextField<String> zipcodeField = new TextField<String>( "zipcode" ); > form.add( zipcodeField.setRequired( true ) ); > > AjaxFormComponentUpdatingBehavior zipcodeOnBlur = new > AjaxFormComponentUpdatingBehavior( "onblur" ) { > @Override > protected void onUpdate( AjaxRequestTarget target ) { > System.out.println( "Zipcode value (form component): " + > getFormComponent().getModelObject() ); > } > }; > zipcodeField.add( zipcodeOnBlur ); > > > > Prior > to using Wicket (which I'm currently prototyping for my company), we > would handle this logic in JavaScript (observe changes to the field and > when the user enters the fifth character then we made an AJAX call back > our Struts 2 application.) > > What is the best way to achieve the same end using Wicket? > > Thanks, in advance, for your help! > Steve > > P.S. > I started using Wicket as part of an article series (because of all of > your passion for it) and I have to say all of you are doing incredible > work - I love it.. Here's the link to the article series in case any of > you are interested: > http://www.informit.com/guides/content.aspx?g=java&seqNum=529 > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org > For additional commands, e-mail: users-h...@wicket.apache.org > > -- regards, Vineet Semwal
