IWEventRegistry.addItemHandler question

Is it possible to use IWEventRegistry.addItemHandlerl ike this? I am not able to get this work

IWEventRegistry.addItemHandler("/Events/events_section/strt_date", "onCallout", handleDate('st_date'));
IWEventRegistry.addItemHandler("/Events/events_section/end_date", "onCallout", handleDate('en_date'));

function handlePubDate( url_data) {
if url_data == 'st_date'
showCalendar("/arts/arts_section/strt_date");

else if url_data=='en_date'
showCalendar("/arts/arts_section/end_date");
return false;

}

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Comments

Adam Stoller

Is it possible to use IWEventRegistry.addItemHandlerl ike this? I am not able to get this work

IWEventRegistry.addItemHandler("/Events/events_section/strt_date", "onCallout", handleDate('st_date'));
IWEventRegistry.addItemHandler("/Events/events_section/end_date", "onCallout", handleDate('en_date'));

function handlePubDate( url_data) {
if url_data == 'st_date'
showCalendar("/arts/arts_section/strt_date");

else if url_data=='en_date'
showCalendar("/arts/arts_section/end_date");
return false;

}

The event handler implicitly passes the item which triggered the event to the function. You cannot pass arbirary parameters yourself.

You can either derive the information you need in the handling function, or have the event handler call a wrapper function which does that and the calle the "real" handling function.

Sailesh

One the event your are calling a function handleDate() and your actual function name is handlePubDate(), how will the event know that this function has to be called?

getnaren

Sailesh,

that was a typo

GriffTheDog


IWEventRegistry.addItemHandler("/Events/events_section/strt_date", "onCallout", handlePubDate); 
IWEventRegistry.addItemHandler("/Events/events_section/end_date", "onCallout", handlePubDate);


function handlePubDate( iwItem) {
if iwItem.getName() == 'st_date' 
showCalendar("/arts/arts_section/strt_date");

else if iwItem.getName()=='en_date'
showCalendar("/arts/arts_section/end_date");
return false;

}

Cheers

Adam Stoller


IWEventRegistry.addItemHandler("/Events/events_section/strt_date", "onCallout", handlePubDate); 
IWEventRegistry.addItemHandler("/Events/events_section/end_date", "onCallout", handlePubDate);


function handlePubDate( iwItem) {
if iwItem.getName() == 'st_date' 
showCalendar("/arts/arts_section/strt_date");

else if iwItem.getName()=='en_date'
showCalendar("/arts/arts_section/end_date");
return false;

}

Cheers

Maybe I'm missing something here - but I don't believe the above will work. I believe that the iwItem variable passed to handlePubDate will have a name of /Events/events_section/strt_date - potentially with an index like [0], [1], etc. embedded to reference a replicant address - not "st_date"; likewise for "/Events/events_section/end_date" vs "en_date".

Having no idea what 'st_date' and 'en_date' are supposed to be - I think the above code is close and could be re-written something like:

function handlePubDate( iwItem) {
  if(iwItem.getName().match(/strt_date$/)){ 
    showCalendar("/arts/arts_section/strt_date");
  else if(iwItem.getName().match(/end_date$/)){
    showCalendar("/arts/arts_section/end_date");
  }
  else {
    alert("How did I get here? ("+iwItem.getName()+")");
  }
  return false;
}

I'm not sure about the return of 'false' at the end - unless showCalendar() is supposed to be prefaced with 'return' such that whatever the result is of showCalendar will be returned to the code that called it - but since it was an event handler, I'm not sure whether returning false or true will make much of a difference. In other words, I think you can just remove the 'return false;' above.