When are portlets reloaded? Can it be controlled?

Question

Hi all
I am fairly new to Weblogic Portal and would appreciate any help in answering the following questions:
When does weblogic portal reload a specific (or all) portlets?
Can this be controlled in some or other way?
What is cached and for how long?
How does javascript in a portlet affect the portal's behaviour?
Thanks
Riana

Answer 1

Hi
What I mean with 'reload' - The content of the div is re-fetched from the server.
As the content did not change, only the div size, there is no need to re-fetch the content from the server.
HTML snippet:
<form action="" method="post" name="frm_accCrashes">
<input id="hid_accCrashesHeight" type="hidden" value="0" name="hid_accCrashesHeight"/>
<table id="tbl_accCrashesDim" cellspacing="0" cellpadding="0" border="0">
<tbody>
<tr> <td class="maxButton">
<button id="btn_accCrashesMax" class="shown" onclick="jMaxMinDiv('accCrashes', 'accCrashes','Year,Month,Week,DayOfWeek',
'accFilterFull', true, 'btn_accCrashesRestore', 'btn_accCrashesMax', 'hid_accCrashesHeight');" name="btn_accCrashesMax" type="button">
</button>
<button id="btn_accCrashesRestore" class="hidden" onclick="jMaxMinDiv('accCrashes', 'accCrashes','Year,Month,Week,DayOfWeek',
'accFilterFull', false, 'btn_accCrashesMax', 'btn_accCrashesRestore', 'hid_accCrashesHeight');" name="btn_accCrashesRestore" type="button">
</button>
</td> </tr>
</tbody>
</table>
<div id="div_accCrashesDayOfWeek" class="selectedDim">
<iframe id="if_accCrashesDayOfWeekIFrame" class="selectedDim" src="http://172.30.0.231:7001/Tst.html?_xpf=&_xpt=1&_xt=NONE&_xf=xml&cond=Al"
name="if_accCrashesDayOfWeekIframe"></iframe>
</div>
</form>
JS:
function jMaxMinDiv(divId, frPrefix, frList, hideShowDivLst, doMax,
     showBtn, hideBtn, hidHeightFld)
     var show = true;
     var className = 'wlp-bighorn-window';
     var h;
     var nh;
     var ph;
     var hObj;
     if (doMax) {
          show = false;
          className = 'max';
     if (hideShowDivLst != null) {
          var hsArr = hideShowDivLst.split(',');
          for (var cnt = 0; cnt < hsArr.length; cnt++) {
               jShowDiv(hsArr[cnt], show);
     var frName;
     hObj = document.getElementById(hidHeightFld);
     if (hObj != null) {
          ph = hObj.value;
     h = document.getElementById(divId).offsetHeight;
     jChangeOneClass (divId, className);
     nh = document.getElementById(divId).offsetHeight;
     hObj.value = h;
     if (doMax) {
          if (frPrefix != null && frList != null) {
               var frArr = frList.split(',');
               for (var cnt = 0; cnt < frArr.length; cnt++) {
                    frName = 'if_' + frPrefix + frArr[cnt] + 'IFrame';
                    obj = document.getElementById (frName);
                    if (obj != null) {
                         obj.style.height = nh + 'px';
     else {
     document.getElementById(divId).height = ph;
     jChangeOneClass (showBtn, 'shown');
     jChangeOneClass (hideBtn, 'hidden');
return true;
CSS:
div.max {
     display: block;
     position: absolute;
     left: 0%;
     width: 95%;
     height: 80%;
     border: solid red;
Edited by: rross on 20-Oct-2009 23:02