IDCS6 MACOSX JS: script of 'remove unused layer' is not from masters of the masters

Hello everyone.

I have an old script I've used several times to remove the unused layers. Until today, I thought that worked well:

var layers = app.documents[0].layers.everyItem().getElements();
for(var i=layers.length-1;i>=0;i--){
  if(layers[i].pageItems.length==0){
    layers[i].remove();
  }
}

However, today, I used the script on a document that was a never used layer once on a master page to which other master pages have taken place on the basis. To my surprise, when the script is run, this specific layer has been removed.

my knowledge of the script is poor, but looking at the script, it seems that the script is looking at all the layers that have something in them and any layer comprising any element should be removed. However, I think that only made pageItems refers to the regular pages or template, not masters BASED ON other masters.

I think that the problem is similar to another that I had recently where I had a script that has removed the unused masters, but deleted that other masters masters took place on the basis, and I think that the principles are the same. This thread can be found at:

http://forums.Adobe.com/message/5922004#5922004

In short, the script that worked there were as follows:

xUnusedMasters(myDoc);

function xUnusedMasters( docRef ) {
var mpNames = new Object () ;
var allPages = docRef.pages ;
for ( var pIndex = allPages.length - 1 ; pIndex >= 0 ; pIndex-- ) {
mpNames = addMasterName ( mpNames , allPages[pIndex] ) ;
}

var allMasterPages = docRef.masterSpreads ;
for ( var mpIndex = allMasterPages.length - 1 ; mpIndex >= 0 ; mpIndex-- ) {
if ( ! mpNames[allMasterPages[mpIndex].name] ) {
allMasterPages[mpIndex].remove() ;
}
}
return ; 

function addMasterName ( MPDB , pageRef ) {
if ( pageRef == null ) { return MPDB ; }
if ( pageRef.constructor.name == 'MasterSpread' ) {
MPDB[pageRef.name] = true ;
}
return addMasterName ( MPDB , pageRef.appliedMaster ) ;
}
}

is it possible to modify the script above so that instead of remove unused pages of masters, it takes away the layers used in a similar way?

Thank you very much

Colly

Hello

Maybe a little differently...:

Array.prototype.filter = function(collection) {
          var k, i, con, ids = collection.everyItem().id;
          con: for (k = ids.length - 1; k >=0; k--)
                    for (i = 0; i < this.length; i++)
                    if (this[i].id == ids[k]) {
                         ids.splice(k, 1);
                         continue con;
                         }
          return ids;     // array with unmatched ids from collection
          }

var
          mL = app.activeDocument.pageItems.everyItem().itemLayer,
          mUnusedLayersID = mL.filter(app.activeDocument.layers),
          len = mUnusedLayersID.length;

while (len-->0)
          app.activeDocument.layers.itemByID(mUnusedLayersID[len]).remove();

mL is a table with a layer of each pageItem;

filter compared to the collections of doc.layers;

unmatched ways not so used are deleted.

Jarek

Tags: InDesign

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