Script to determine number of lines of text in a paragraph?

Question

I'm revisiting an issue I first posted here last summer, thanks to all who offered help, but I've not been able to sort it out.
http://forums.adobe.com/thread/455526?tstart=0
What I'm after is  a 'search function' to insert into a FindChangeByList.
Jongware suggested the following - but when inserted into my list I can't get it to do anything - it doesn't throw up a Javascript error.
app.findTextPreferences = NothingEnum.nothing;
app.findTextPreferences.appliedParagraphStyle = "Callout_3";
foundItems = app.activeDocument.findText();
for (var i=foundItems.length-1; i>=0; i--)
  if (foundItems[i].paragraphs[0].lines == 2)
    foundItems[i].paragraphs[0].appliedParagraphStyle = "Callout_2";
  if (foundItems[i].paragraphs[0].lines == 1)
    foundItems[i].paragraphs[0].appliedParagraphStyle = "Callout_1";
I regularly receive a 'word' document on which I run a 'FindChangeByList' which cleans up and formats the text with a number of GREP/text searches.
One of the search lines converts a particluar string of text to a paragraph style "Callout_3" (the most common occurence of Callouts).
This style applies a paragraph rule, above and below the line, to create a coloured block/band out of which said text is reveresed.
The problem that I have is that the style (because of the paragraph rules), only works correctly if the paragraph has x3 lines of text.
I have styles set up for every other eventuality - Callout_1 (for single line of text), Callout_2 (for x2 lines of text) etc.
What I'm looking for is a script that can count the number of lines in the paragraph (once the "Callout_3" style has been applied) and then change the style accordingly to the number of lines in each paragraph/Callout.
Any further thoughts?
Steve

Answer 1

Hi Steve!
Well, I said it was untested ... Found two major errors. First one is also visible when you manually search for the style "Callout_3". Rather than marking each and every paragraph on its own, InDesign gathers as much as possible. Hence, just testing paragraph[0] would miss out all other paragraphs. Explicitly looping over all paragraphs per "found item" does work.
The other one is sort of a "syntax" error. Merely testing "lines == 2" does not work -- but it doesn't give an error either! Apparently, it's okay to compare an object ("lines") to a number, even though it doesn't work. The property to check is "lines.length" -- that returns the number of lines for a paragraph.
Putting it all together results in this script.
'And now I shall test it,' said Wen. This time he twisted it gently to and fro. 'That si-si-si That simple-ple, eh eheh simple, eh?'
... And I tested it.
app.findTextPreferences = NothingEnum.nothing;
app.findTextPreferences.appliedParagraphStyle = "Callout_3";
foundItems = app.activeDocument.findText();
for (var i=foundItems.length-1; i>=0; i--)
for (var j=0; j<foundItems[i].paragraphs.length; j++)
  if (foundItems[i].paragraphs[j].lines.length == 2)
   foundItems[i].paragraphs[j].appliedParagraphStyle = "Callout_2";
  if (foundItems[i].paragraphs[j].lines.length == 1)
   foundItems[i].paragraphs[j].appliedParagraphStyle = "Callout_1";