How to define a certain layer is selected or not?

[Andy_Bat1]

If you click outside of the open document, then on the layers' panel untagged about which layer is active, some are blocked by filters, but in the properties of the active layer of a document. In his instrument I want to also block some of the controls in case you explicitly select one of the layers (not marked in the layers' panel)

[c.pfaffenbichler]

I don’t seem to understand what you are asking.

Could you please elaborate, mabe provide screenshots or sketches to illustrate the issue?

[Andy_Bat1]

jn this video you can see what menu Filters are blkcked if no layer is selected.

[Paul Riggott · Accepted solution]

This will give you a list of selected layers, the array will be zero if no layers are selected.

var selectedLayer =  getSelectedLayersIdx();
if(!selectedLayer.length) alert("no layers selected");
function getSelectedLayersIdx(){ 
      var selectedLayers = new Array; 
      var ref = new ActionReference(); 
      ref.putEnumerated( charIDToTypeID("Dcmn"), charIDToTypeID("Ordn"), charIDToTypeID("Trgt") ); 
      var desc = executeActionGet(ref); 
      if( desc.hasKey( stringIDToTypeID( 'targetLayers' ) ) ){ 
         desc = desc.getList( stringIDToTypeID( 'targetLayers' )); 
          var c = desc.count 
          var selectedLayers = new Array(); 
          for(var i=0;i<c;i++){ 
            try{ 
               activeDocument.backgroundLayer; 
               selectedLayers.push(  desc.getReference( i ).getIndex() ); 
            }catch(e){ 
               selectedLayers.push(  desc.getReference( i ).getIndex()+1 ); 
            } 
          } 
       }else{ 
         var ref = new ActionReference(); 
         ref.putProperty( charIDToTypeID("Prpr") , charIDToTypeID( "ItmI" )); 
         ref.putEnumerated( charIDToTypeID("Lyr "), charIDToTypeID("Ordn"), charIDToTypeID("Trgt") ); 
         try{ 
            activeDocument.backgroundLayer; 
            selectedLayers.push( executeActionGet(ref).getInteger(charIDToTypeID( "ItmI" ))-1); 
         }catch(e){ 
            selectedLayers.push( executeActionGet(ref).getInteger(charIDToTypeID( "ItmI" ))); 
         } 
     var vis = app.activeDocument.activeLayer.visible;
        if(vis == true) app.activeDocument.activeLayer.visible = false;
        var desc9 = new ActionDescriptor();
    var list9 = new ActionList();
    var ref9 = new ActionReference();
    ref9.putEnumerated( charIDToTypeID('Lyr '), charIDToTypeID('Ordn'), charIDToTypeID('Trgt') );
    list9.putReference( ref9 );
    desc9.putList( charIDToTypeID('null'), list9 );
    executeAction( charIDToTypeID('Shw '), desc9, DialogModes.NO );
    if(app.activeDocument.activeLayer.visible == false) selectedLayers.shift();
        app.activeDocument.activeLayer.visible = vis;
      } 
      return selectedLayers; 
};

[Andy_Bat1]

I'm sorry for longest timeout 🙂

After I'm started this script in the row "var ref = new ActionReference();" is error -  ActionReference has no a cinstructor. What I can do ?

[Michael_L_Hale]

Where are you running the script from? If you are using ESKT make sure Photoshop is the target app or add #target photoshop at the top of the script.

As far as I know only Photoshop has an ActionReference class. If another app is running the script you will get that error. The default target app for ESTK is ESTK itself.

[Andy_Bat1]

Yes ! Thanks !