Selecting Only Visible Layers

[Guest]

I am a beginner scripter trying to find a way to hide all the layers in a document.  The document has hundreds of layers so selecting all and then hiding all takes way too long to run.  Is there a way to simlply hide all or select only the layers that are visible and then hide?

[Paul Riggott · Accepted solution]

Here is one way to turn all layers visibility off ...

//select top layer
activeDocument.activeLayer = activeDocument.layers[0];
 
//toggle all other layers visibility off 
toggleVisability();
 
//toggle this layers visibility off
activeDocument.activeLayer.visible=false;
 
//This function is the same as Alt/Click on a layers eye
function toggleVisability() {
var desc = new ActionDescriptor();
var list1 = new ActionList();
var ref = new ActionReference();
ref.putEnumerated( charIDToTypeID('Lyr '),charIDToTypeID('Ordn'),charIDToTypeID('Trgt') ); 
list1.putReference( ref );
desc.putList( charIDToTypeID('null'), list1 );
desc.putBoolean( charIDToTypeID('TglO'), true );
executeAction( charIDToTypeID('Shw '), desc, DialogModes.NO );
};

[Guest]

Thank you sir.

[boo_radley_2013]

is there a way to do this so that it turn all layers 'ON' instead of 'off' ?

[Michael_L_Hale]

function showAllLayers() {
    var numberOfLayers = getNumberOfLayer();
    var desc = new ActionDescriptor();
    var list1 = new ActionList();
    var ref = new ActionReference();
    for(var layerIndex=1-Boolean(hasBackground());layerIndex<=numberOfLayers;layerIndex++){
        ref.putIndex( charIDToTypeID('Lyr '), layerIndex );
    }
    list1.putReference( ref );
    desc.putList( charIDToTypeID('null'), list1 );
    executeAction( charIDToTypeID('Shw '), desc, DialogModes.NO );
};
function getNumberOfLayer(){ 
    var ref = new ActionReference(); 
    ref.putEnumerated( charIDToTypeID("Dcmn"), charIDToTypeID("Ordn"), charIDToTypeID("Trgt") ); 
    var desc = executeActionGet(ref); 
    var numberOfLayer = desc.getInteger(charIDToTypeID("NmbL")); 
    return numberOfLayer; 
};
function hasBackground(){
    var res = undefined;
    try{
        var ref = new ActionReference();
        ref.putProperty( 1349677170 , 1315774496); 
        ref.putIndex( 1283027488, 0 );
        executeActionGet(ref).getString(1315774496 );; 
        res = true;
    }catch(e){ res = false}
    return res;
};
showAllLayers();