Hi
I'm using Tapestry 4.1.3.
I'm trying unsuccessfully to invoke some javascript after an
asyncrhonous update. I'll post code if needed, but here is the summary:
1. Simple page with a list.
2. Initialization javascript makes list sortable using
script.aculo.us: Sortable.create('cityList', {only:'sortable',
onUpdate: onCityListReordered });
3. I have an EventListener that fires when the list is reordered
4. The list is asynchronously updated.
So far so good.
The problem is that after the update, the list items are no longer
draggable. I'm assuming that this is because the replacement list needs
to be re-initialized via Sortable.create. If this is right then I need
to invoke some javascript after the update.
I try adding the javascript from the event listener method:
@EventListener( targets = { "cityList" }, events = { "onUpdate" } )
public void onItemsReordered(IRequestCycle cycle) {
//updates
cycle.getResponseBuilder().addInitializationScript(this, "...inline
javascript...");
}
This causes a NullPointerException because the DojoAjaxResponseBuilder
has a null PageRenderSupportImpl (_prs).
Am I approaching this the right way? Any pointers appreciated.
Richard Hoberman
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