[TAPESTRY-1132] EventListeners can not be wired up programatically ( needed to handle For loops)

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Fix Version/s: 4.2
• Assignee: Unassigned
• Reporter: Patrick Moore
• Created: 30/Oct/06 06:26
• Updated: 07/May/07 00:49

Description

What I am hoping to do is something like this:

<span jwcid="@For" value="ognl:current">
<a jwcid="foo"><span jwcid="@Insert" value="ognl:current"/></a>
<span jwcid="@InvokeListener" listener="listener:makeLink"/>
</span>

and code like this:

public void makeLink() {
IEventListener listener = getFoo().getEventListener("onclick");
listener.setEventHandler("bar");
listener.setParameters(new Object[]

{ getCurrent().getEntityId()}

);
}

// called when user clicks on one of the generated links in @For
public void bar(Long entityId)

{ System.out.println("link for "+ entityId +"was clicked!"); }

Hope that helps...

CD suggested this:

I found a nice solution using dojo's ability to listen to an arbitrary
javascript function as if it were a native event.
I attach an empty js function to an arbitrary DOM element like this:

document.getElementById('someDiv').clickRadio=function(radio) {};

and an onclick attribute to my radio buttons:

<span jwcid="@Radio" value="ognl:lv.value" onclick="document.getElementById
('someDiv').clickRadio(this);"/>

Then I can set an EventListener on the server-side

@EventListener(targets = "someDiv", events = "clickRadio", submitForm =
"form")
public void listenToOnclickOnAnyRadioButtonInTheForLoop(IRequestCycle
cycle) throws InterruptedException

{ ... }

Works fine.
Ch.