Der friends,
The white document hits again... ( see https://forums.adobe.com/thread/2276988) and I tracked it down to failing app.Displaying. The script requests function SetDisplay (bWanted) 17 times successful, but the 18. call does not switch the display any more. The routine is that simple:
function SetDisplay (bWanted) { //=== Set display to on or off ====================================
// Arguments bWanted: true => set display ON; false => display OFF
// Commment This function does not work reliably. See https://forums.adobe.com/thread/2276988
// Reference Rick Quattro Console (" current:" + app.Displaying + " => wanted: " + bWanted); if (app.Displaying != bWanted) { app.Displaying = bWanted; Console (" set ? " + app.Displaying); }
} //--- end SetDisplayJust after the following log the document gets white:
....SetDisplay(true) current:0 => wanted: true set ? 0
That is, app.Displaying was not performed and hence the document is not visible.
The white document appears within a routine which collects variables from the document. Since this function switches between pages and even page types I want to avoid flicker - which is really annoying here.
Do you spot something dubious in this routine?
function CollectVarsInDoc (oDoc, aDocVars) { //=== Collect variables in the 'natural' order =======
// Arguments oDoc: current document
// aDocVars: array to be filled with var objects
// Called by xxx
// Calling GetFindParameters, SetDisplay, SaveCurrentLocation, RestoreLocation
// Comment Variables are found on all page types (Body, Master, Reference).
// Starting points must be oDoc.FirstBodyPageInDoc, .FirstMasterPageInDoc, .FirstRefPageInDoc
var aVarsRange = [], bIsSystem, findParams, jFound = 0, jPageType, iVrLen, oFirst, oPage, oPara, oSavedLoc, oTextItem, oTR = new TextRange(), oVar, sVarName, sValue, aPages = [oDoc.FirstBodyPageInDoc, oDoc.FirstMasterPageInDoc, oDoc.FirstRefPageInDoc]; SetDisplay (false); oSavedLoc = SaveCurrentLocation (oDoc); aDocVars.length = 0; // clear array for refill if (oDoc == null) { // emergency bailing out SetDisplay (true); return; } for (jPageType = 0; jPageType < 3; jPageType++) { // for all page types oFirst = aPages[jPageType]; if (oFirst.id == 0 && jPageType != 1) {continue}; // only master page(s) exist oDoc.CurrentPage = oFirst; oPage = oDoc.CurrentPage; oPara = oPage.PageFrame.FirstGraphicInFrame.FirstPgf; while (oPara == undefined) { // can happen on ref pages oPage = oPage.PageNext; if (oPage.id == 0) { goFMv.nDocVars = aDocVars.length; RestoreLocation (oDoc, oSavedLoc); SetDisplay (true); return;} // no next page available oPara = oPage.PageFrame.FirstGraphicInFrame.FirstPgf; } oTR = oDoc.TextSelection; oTR.beg.obj = oTR.end.obj = oPara; oDoc.TextSelection = oTR; oTR.beg.offset = oTR.end.offset = 0; findParams = GetFindParameters (2, null); // finding any variable, no wrap InitFA_errno (); // reset - it is write protected oTR = oDoc.Find(oTR.beg, findParams); // and do an initial find to get started. while(FA_errno === Constants.FE_Success) { jFound += 1; oDoc.TextSelection = oTR; // set up the text range aVarsRange = oDoc.GetTextForRange (oTR, Constants.FTI_VarBegin); // this is an array iVrLen = aVarsRange.length; // have not found anything other than 1 to be correct if (iVrLen === 0) { // Hickup ? InitFA_errno (); // track the progress oTR = oDoc.Find(oTR.beg, findParams); // prepare for next find continue; // while } oTextItem = aVarsRange[0]; // have not found anything other than 1 to be correct oVar = oTextItem.obj; sVarName = oVar.VarFmt.Name; // name of the variable sValue = oVar.VarFmt.Fmt; // contents of variable oTR = oVar.TextRange; // the text range of the variable bIsSystem= (oVar.VarFmt.SystemVar !== Constants.FV_VAR_USER_VARIABLE); aDocVars.push (new oVariable (sVarName, sValue, oVar, bIsSystem, oTR)); InitFA_errno (); // track the progress oTR = oDoc.Find(oTR.beg, findParams); // prepare for next find } } goFMv.nDocVars = goFMv.aoDocVars.length; RestoreLocation (oDoc, oSavedLoc); SetDisplay (true);
} //--- end CollectVarsInDoc
From a more detailed trace I know that the statement on line 66 is in charge.