How to reference a saw:param in javascript

Question

Hi everyone,
Not sure if this is possible but I have a need to reference the value computed in <sawm:param name="addViewState"/>. Does anyone have experience referencing these values?
I've been trying to work on a way to display a dynamic breadcrumb using OBIEE's DrillBack function. That function requires two values, a viewpath and a viewstate. I can get the view path but I've been stuck on retrieving the viewstate for about the last week. After a bit of digging, I found the above reference in dashboardtemplates.xml.
I know Sunil has implemented a static version of a breadcrumb using navigate, but I was hoping to achieve something more dynamic.
thanks for the help!
-Joe

Answer 1

I would recommend using Firebug to determine what functions are called during the standard drill-down. Replace the existing onClick with your own new onClick that executes both your custom code and OBIEE's code.
I did something similar recently when making a modification to writeback functionality. I needed to display a select list for my writeback instead of a text box. I created a Answers field with the html code for the select list. This included a call to a custom function triggered onClick. The custom function wrote the selected value from the select list to the text box. This didn't work initially because OBIEE was making use of the onFocus and onChange function of the writeback text box. These functions needed to be called in order for the writeback to execute properly. My behind the scenes assignment to the text box was not triggering the onFocus and onChange functions like it needed to. My solution was to determine what code was executing from onFocus and onChange and then execute it explicitly from my custom function.
Here's an excerpt from my custom onClick function from the select list. The functions WBFocus and WBChange are what OBIEE was executing onFocus and onChange for the writeback text box.
if( aElm.type == "text" && aElm[i].size ==50) {
WBFocus(event);
aElm[i].value="n/a";
WBChange(event);