Re: Script to add layer mask to all layers but background?

You can try this.  Just set a snapshop first incase it does something funky that I didn't catch.  I should note that this will only apply the mask to layers that are not in a group.

#target photoshop

 

if(app.documents.length>0){

    var docRef = activeDocument;

    var layerNum = docRef.layers.length;

 

    for(var i=0;i<layerNum;i++){

        docRef.activeLayer = docRef.layers[i];

        if(!docRef.activeLayer.isBackgroundLayer){

            try{addMask ()}

            catch(e){}

            }

        }

    }

else{alert('There are no open files')};

 

function addMask(){

    var idMk = charIDToTypeID( "Mk  " );

        var desc2 = new ActionDescriptor();

        var idNw = charIDToTypeID( "Nw  " );

        var idChnl = charIDToTypeID( "Chnl" );

        desc2.putClass( idNw, idChnl );

        var idAt = charIDToTypeID( "At  " );

            var ref1 = new ActionReference();

            var idChnl = charIDToTypeID( "Chnl" );

            var idChnl = charIDToTypeID( "Chnl" );

            var idMsk = charIDToTypeID( "Msk " );

            ref1.putEnumerated( idChnl, idChnl, idMsk );

        desc2.putReference( idAt, ref1 );

        var idUsng = charIDToTypeID( "Usng" );

        var idUsrM = charIDToTypeID( "UsrM" );

        var idHdAl = charIDToTypeID( "HdAl" );

        desc2.putEnumerated( idUsng, idUsrM, idHdAl );

    executeAction( idMk, desc2, DialogModes.NO );

    }