SAP BI7 POST command to iFrame possible?

Question

Hi All,
I created an iFrame inside a page. The idea is to send POST commands to iFrame page using standard SAP JavaScript commands (like sending filter values, hide/unhide items etc.). Below is the approach I use but it doesnt work. I hope somebody can point out a way to make this work or give suggestions on another approach.
SAP BI has a JavaScript global object derived from sapbi_PageClass called sapbi_page and this is the global object to use for adding and sending commands.
In order to initialize a new object from sapbi_PageClass class that refers to the iFrame, I use the following constructor function which i found in the sapbi_070_pageclass.js. The constructor accept a window object as parameter.
      var zsapbi_cmtpage = new sapbi_PageClass( window.frames["commentFrame"].window );
I use the following command to add a new command sequence. The example below is to hide document item. Note that the function zbicmd_changeVisible() is a customized function. This is already proven to work elsewhere.
      var zcmdSeq = new sapbi_CommandSequence();          zcmdSeq.addCommand(zbicmd_changeVisible("SINGLE_DOCUMENT_ITEM","SINGLE_DOCUMENT_ITEM_1",0));
I found this method in sapbi_070_pageclass.js to send command over to other frames.
      zsapbi_cmtpage.formSendParameterList2TargetFrame(zcmdSeq,"commentFrame");
The above script doesnt work as the method formSendParameterList2TargetFrame() failed on line 85 of sapbi_050_commandform.js - this.m_pFormElement.appendChild( paramField );
Any Ideas??
Thanks & Regards,
Wira

Answer 1

This may or may not be the issue, but where you have:
var zsapbi_cmtpage = new sapbi_PageClass( window.frames\"commentFrame\".window );
If you are using MSIE, I believe it should be (I'm leaving out the \escaped\ characters just for clarity):
var zsapbi_cmtpage = new sapbi_PageClass( window.frames["commentFrame"].contentWindow );
or, assuming that you've given your IFRAME an ID of 'commentFrame', try it this way maybe also:
var zsapbi_cmtpage = new sapbi_PageClass( document.getElementById("commentFrame").contentWindow );
One thing maybe also to note is that the JavaScript will not be able to manipulate the IFRAME if its SRC tag is either not set or set initially to a page not within the domain of the calling page.  So try also setting the IFRAME's SRC to a landing page that's within the same document.domain if you haven't already.
If you are still having problems, message me with maybe more complete example source code and I'll see if I can look further.