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This
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mini
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tutorial
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shows
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you
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how
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to
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call
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Wicket
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from
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Javascript.
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It
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is
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based
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on
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an
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Setup the Wicket response to the Javascript call
Add the AbstractDefaultAjaxBehavior to the component you'd like to call from javascript. You then have to override the respond method of AbstractDefaultAjaxBehavior to perform your actions and to append your changes to the response
For example in your panel:
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|http://www.nabble.com/forum/ViewPost.jtp?post=14693821&framed=y]. h3. Setup the Wicket response to the Javascript call Add the AbstractDefaultAjaxBehavior to the component you'd like to call from javascript. You then have to override the respond method of AbstractDefaultAjaxBehavior to perform your actions and to append your changes to the response For example in your panel: {{{ final AbstractDefaultAjaxBehavior behave = new AbstractDefaultAjaxBehavior() { protected void respond(final AjaxRequestTarget target) { target.add(new Label("foo", "Yeah I was just called from Javascript!")); } }; add(behave); }}} h3. Add the calling Javascript to the page header Any component can add Javascript to the page header by implementing IHeaderContributor, that's where the response-object gets passed. TODO: add an example of Java code. Here is an example Javascript code: {{{ |
Add the calling Javascript to the page header
Any component can add Javascript to the page header by implementing IHeaderContributor, that's where the
response-object gets passed.
TODO: add an example of Java code.
Here is an example Javascript code:
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function callWicket() { var wcall = wicketAjaxGet('$url$' + '$args$', function() { }, function() { }); } }}} |
'$url$'
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is
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obtained
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from
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the
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method
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behave.getCallbackUrl()
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.
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If
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you
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paste
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the
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String
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returned
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from
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that
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method
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into
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your
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browser,
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you'll
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invoke
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the
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respond
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method,
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the
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same
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applies
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for
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the
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javascript
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method.
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You
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can
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optionally
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add
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arguments
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by
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appending
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these
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to
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the
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URL
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string.
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They
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take
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the
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form
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&foo=bar&.
Obtaining the arguments
Ok, this is actually quite ugly, but you get the optional arguments in the response method like so:
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}}. h3. Obtaining the arguments Ok, this is actually quite ugly, but you get the optional arguments in the response method like so: {{{ Map map = ((WebRequestCycle) RequestCycle.get()).getRequest().getParameterMap(); }}} |