[CS4 JavaScript] Adding a CrossReferenceFormat

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3 total messages Started by Rick_Quatro Wed, 14 Jan 2009 14:49

#2035

Author: Rick_Quatro
Date: Wed, 14 Jan 2009 14:49

29 lines
1730 bytes

I am using a function to return a cross-reference format. If it doesn't exist, then I want to create it. Here is the code:



var doc = app.activeDocument; 
var xrefFmt = getXRefFmt(doc,'Hoffman Accessory'); 
alert(xrefFmt.name);

function getXRefFmt(doc,formatName) { 
  var xrefFmt = null; 
  try { 
    xrefFmt = doc.crossReferenceFormats.item(formatName); 
    $.writeln(xrefFmt.name); 
  } 
  catch (e) { 
    xrefFmt = doc.crossReferenceFormats.add({name:formatName}); 
    xrefFmt.buildingBlocks.add({blockType:BuildingBlockTypes.FULL_PARAGRAPH_BUILDING_BLOCK}); 
    xrefFmt.buildingBlocks.add({blockType:BuildingBlockTypes.CUSTOM_STRING_BUILDING_BLOCK,customText:', page '}); 
    xrefFmt.buildingBlocks.add({blockType:BuildingBlockTypes.PAGE_NUMBER_BUILDING_BLOCK}); 
  } 
  return xrefFmt; 
}



The function works as long as I have the $.writeln statement in the try block; otherwise the format is not created and I get an error on the alert statement on line 3. Why does the function fail without the $.writeln statement? Thanks.

Rick Quatro
585-659-8267

Re: [CS4 JavaScript] Adding a CrossReferenceFormat

#2040

Author: Olav_Kvern
Date: Wed, 14 Jan 2009 18:35

9 lines
1128 bytes

Hi Rick,

It's most likely that "$.writeln(xrefFmt.name)" throws an error that is then handled by the catch statement. JavaScript will always think that "xrefFmt = doc.crossReferenceFormats.item(formatName)" returns a valid object--it's only when you try to use some property of that object that it'll realize that the object is invalid.

You could just change the line to: "xrefFmt.name;"--that will generate an error if the cross reference format does not exist.

Thanks,

Ole

Re: [CS4 JavaScript] Adding a CrossReferenceFormat

#2044

Author: Rick_Quatro
Date: Wed, 14 Jan 2009 19:36

16 lines
919 bytes

Hi Ole,

OK, I see now. I modeled my code after an example in the "Adobe InDesign CS4 Scripting Guide: JavaScript", but I missed this part:



... 
//If the style does not exist, trying to get its name will generate an error. 
myName = myCharacterStyle.name; 
...



Thank you very much for your help.

Rick

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