Iteration through the activeDocument.layers is very slow

Hello

I am trying to build a table of all visible layers currently in a document, and the only way I know how to do it is by performing an iteration (by using where loop method) app.activeDocument.layers however, the problem is it is really slow for some reason any. For 37 layers, it will sit there for about 10 to 15 seconds and the mouse pointer will fluctuate between normal and busy pointer.

A few questions:

(a) is there a better way to build the list of visible layers?

(b) why it takes so long to complete this (Note: there is only a single action in the loop that is assigning the active layer in the layers panel to l):

var layers = app.activeDocument.layers;

for (var i = 0; i < layers.length; i ++)

{

var l = layers [i];

}

Any help on this will be appreciated!

Thank you

Nate

If you have CS4, you can use the function below to get the index of the selected layers AM.

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
There isn't really any documentation by using the Action Manager. The javascript guide that ships with Photoshop lists the properties and methods for the action descriptor, Action reference and list of actions. And the app.object methods to convert an ID.

Tags: Photoshop

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