How to prompt user to select multiple files in file dialog using scripts

Question

Hi, is there a way to allow user to select multiple files inside the file dialog using scripts? So not just something like "*.ai" or "*.eps" but where the user can actually use their shift key to select a batch of files inside the file dialog and then the script would process each one.
Thanks!

Answer 1

// Main Code [Execution of script begins here]
here's what I have so far. it would also be nice to not have illustrator stop at errors.. right now, it skips dialogs but on errors, it still stops.
// uncomment to suppress Illustrator warning dialogs
app.userInteractionLevel = UserInteractionLevel.DONTDISPLAYALERTS;
var destFolder, sourceFolder, files, fileType, sourceDoc, targetFile, pdfSaveOpts, folderName;
var fullPath = "";
var finalSlash;
// Select the source folder.
sourceFolder = Folder.selectDialog( 'Select the folder with Illustrator .ai files you want to convert to PDF');
f = find_files(sourceFolder);
function find_files (dir)
    return find_files_sub (dir, []);
function find_files_sub (dir, array)
    var f = Folder (dir).getFiles ("*.*");
    for (var i = 0; i < f.length; i++)
        if (f[i] instanceof Folder)
            find_files_sub (f[i], array);
        else
            if (f[i].name.slice (-3).toLowerCase() == ".ai"          || f[i].name.slice (-4).toLowerCase() == ".eps")
                    //convert the array-listing to a string so we can manipulate it
                    fullPath = String(f[i]);
                    //find the position of the last / to indicate where the filename starts
                    finalSlash = fullPath.lastIndexOf("/");
                    //get the foldername by "slicing" from start to where finalSlash is located
                    folderName = fullPath.slice(0, finalSlash).toLowerCase();                   
                    sourceDoc = app.open(f[i]); // returns the document object
                    // Call function getNewName to get the name and file to save the pdf          
                                                  targetFile_PNG = getNewName(".png");
                                                  if(targetFile_PNG.exists) {
                                                  } else {
                                                            pngExportOpts = getPNGOptions();
                                                            sourceDoc.exportFile(targetFile_PNG, ExportType.PNG24, pngExportOpts );
                    targetFile_PDF = getNewName(".pdf");
                    pdfSaveOpts = getPDFOptions();
                                                  sourceDoc.saveAs(targetFile_PDF, pdfSaveOpts );
                                                  targetFile_SVG = getNewName(".svg");
                                                  svgSaveOpts = getSVGOptions();
                                                  sourceDoc.exportFile(targetFile_SVG, ExportType.SVG, svgSaveOpts );
                    sourceDoc.close();
                    array.push (f[i]);
getNewName: Function to get the new file name. The primary
name is the same as the source file.
function getNewName(ext)
    var ext, docName, newName, saveInFile, docName, finalDot
    var loop = 0;
    docName = sourceDoc.name;
    ext = ext; // new extension for pdf file
    newName = "";
    finalDot = sourceDoc.name.lastIndexOf(".");
    while(loop < finalDot)
        newName += docName[loop];
        loop = loop + 1;
    newName += ext; // full pdf name of the file
          newName = newName.replace(" [Converted]","");
    // Create a file object to save the pdf
    saveInFile = new File( folderName + '/' + newName );
    return saveInFile;
getPDFOptions: Function to set the PDF saving options of the
files using the PDFSaveOptions object.
function getPDFOptions()
    // Create the PDFSaveOptions object to set the PDF options
    var pdfSaveOpts = new PDFSaveOptions();
    // Setting PDFSaveOptions properties. Please see the JavaScript Reference
    // for a description of these properties.
    // Add more properties here if you like
    pdfSaveOpts.acrobatLayers = false;
    pdfSaveOpts.colorBars = false;
    pdfSaveOpts.colorCompression = CompressionQuality.AUTOMATICJPEGHIGH;
    pdfSaveOpts.compressArt = true; //default
    pdfSaveOpts.embedICCProfile = false;
    pdfSaveOpts.enablePlainText = false;
    pdfSaveOpts.generateThumbnails = false; // default
    pdfSaveOpts.optimization = true;
    pdfSaveOpts.pageInformation = false;
    pdfSaveOpts.preserveEditability = true;
    return pdfSaveOpts;
function getSVGOptions()
          var svgSaveOpts = new ExportOptionsSVG();
          //just using defaults aside from what's written below
  //see http://cssdk.host.adobe.com/sdk/1.0/docs/WebHelp/references/csawlib/com/adobe/illustrator/ ExportOptionsSVG.html
  svgSaveOpts.embedRasterImages = true;
  svgSaveOpts.sVGTextOnPath = true;
          return svgSaveOpts;
function getPNGOptions()
          // Create the PDFSaveOptions object to set the PDF options
          var pngExportOpts = new ExportOptionsPNG24();
          // Setting PNGExportOptions properties. Please see the JavaScript Reference
          // for a description of these properties.
          // Add more properties here if you like
          pngExportOpts.antiAliasing = true;
          pngExportOpts.artBoardClipping = false;
          pngExportOpts.horizontalScale = 100; // scaling to 350%
          pngExportOpts.saveAsHTML = false;
          pngExportOpts.transparency = true;
          pngExportOpts.verticalScale = 100; // scaling to 350%
          return pngExportOpts;