Activating object layers basing on document layers

Hi all,

I had a similar issue and it totally puzzled me. What I found is that when you change the currentVisibility of a graphicLayer, its specifier becomes instantly invalid! As a matter of fact, it seems that the Graphic container (e.g. myPDF) gets a new id so the whole chain is disabled: myPDF, myPDF.graphicLayerOptions, etc.

I have not AI installed at home, so I can't test my theory with actual files. Anyway, I believe this is a very special case where we need to use unresolved specifiers in order to recreate a valid access to the graphic object each time the state of a graphic layer is changed within. In other words, I recommend you do not use resolved arrays (myRectangle.allGraphics). Instead, try to re-access the element by its index from the collection myRectangle.graphics. Using indices rather than ids should work [remainder: a resolved specifier is based on ids.]

Of course my code should be refined if you have nested graphics (?) and/or nested graphic layers (?), but in basic situations this may be a good starting point. So, try something like this:

// =====================================
// YOUR SETTINGS
// =====================================
var ID_TO_AI_LAYERS = {
        "ES": ["ES", "quote", "disegno"],
        "EN": ["EN", "quote", "design"],
        "FR": ["FR"],
        /* etc.*/
        },
    TARGET_COLLECTION = 'rectangles';
// =====================================
// SYNCHRONIZE ID<->AI LAYERS
// =====================================
const EXTRA_CHAR = '\uE080';
var items = app.activeDocument[TARGET_COLLECTION],
    i = items.length,
    r, gx, j,
    s, okNames, a,
    t, j, k, v;
while( i-- )
    {
    // Name of the ID layer the current rectangle (r) belongs to
    // ---
    s = (r=items).itemLayer.name;
    // Make sure that this layer is supported
    // ---
    if(! ID_TO_AI_LAYERS.hasOwnProperty(s) ) continue;
    // Store the allowed AI layer names in a String (okNames)
    // ---
    okNames = EXTRA_CHAR + ID_TO_AI_LAYERS.join(EXTRA_CHAR) + EXTRA_CHAR;
    // Consider only the direct graphic children of the current rectangle
    // (We need unresolved specifiers here => gx remains a collection.)
    // ---
    gx = r.graphics;
    j = gx.length;
    while( j-- )
        {
        // Temporarily resolve the underlying graphic object (--> PDF)...
        // ---
        t = gx.getElements()[0];
        // ...in order to check whether t has graphic layers
        // ---
        if( !('graphicLayerOptions' in t) ) continue;
        // Consider the names of the contained graphic layers
        // ---
        a = t.graphicLayerOptions.graphicLayers.everyItem().name;
        k = a.length;
        while( k-- )
            {
            s = a;
            // Depending on a graphic layer name, do we want to show or hide it?
            // ---
            v = 0 <= okNames.indexOf(EXTRA_CHAR + s + EXTRA_CHAR);
            // Now, the problem is to point out to the graphic layer although
            // the parent graphic specifier may not be valid anymore!
            // But gx should work, as we re-access the element per index
            // (from the Graphics coll.)
            // ---
            t = gx.graphicLayerOptions.graphicLayers.itemByName(s);
            // Hit the DOM *only* if a change is possible AND required
            // ---
            ( ! t.isValid ) ||
            ( t.currentVisibility === v ) ||
            ( t.currentVisibility = v );
            }
        }
    }

Note: turning enabledRedraw off is highly recommended during the process!

Hope that helps.

@+

Marc

I'm not able to test this properly I'm afraid, but this may be of some help to you.

var myDoc = app.activeDocument;
var totRectangles = myDoc.rectangles;
var visibleLayers = "Disegno__quote";
var hiddenLayers  = "PT__DE__FR__EN__IT";
for(i=0; i<totRectangles.length; i++){
  var myRectangle = totRectangles;
  var myRectangleLevel = myRectangle.itemLayer.name; // the name of the Indesign's layer to which the rectangle belongs
  var totGraphics = myRectangle.allGraphics;
  for(k=0; k<totGraphics.length; k++){
    var myGraphic = totGraphics;
    // I was getting this error:
    // execution error: Adobe InDesign CS5 got an error: The property is not applicable in the current state.
    // So I put this line in to catch those cases and skip to the next loop iteration.
    // I don't have a document set up to see if this is going to actually work, however.
    try{myGraphic.imageTypeName}catch(e){continue;}
    if(myGraphic.imageTypeName == "Adobe PDF"){ // You had a single equals sign here
      var myGraphicLayers = myGraphic.graphicLayerOptions.graphicLayers; // the layers of the Illustrator file
      for(j=0; j<myGraphicLayers.length; j++){
        var myGraphicLayer = myGraphicLayers.item(j).name; // the name of the current Illustrator's layer
        if(hiddenLayers.match(myGraphicLayer)){
          myGraphicLayers.item(j).currentVisibility = false;
        }else if(visibleLayers.match(myGraphicLayer)){
          myGraphicLayers.item(j).currentVisibility = true;
        }
      }
    }
  }
}