get index of selected layer

lukasz · Post by **lukasz** » Mon Oct 10, 2011 8:56 pm

for some reason I cannot get the index of the selected layer. having a brain fart.

trying to turn off visibility of selected layer then turn on visibility next layer and have next layer also be active layer.

Code: Select allvar currentLayer = app.activeDocument.activeLayer.length;
var activelayer = app.activeDocument.activeLayer;
activelayer.visible = false;
var nextLayer = currentLayer-1;
nextLayer.visible = true;
app.activeDocument.activeLayer = nextLayer;

txuku · Post by **txuku** » Tue Oct 11, 2011 9:32 am

Bonjour lukasz

I think this corresponds to what you seek :

Code: Select allvar doc = app.activeDocument;
var currentLayer = doc.activeLayer;

for(i=0; i < doc.layers.length; )
{
if(doc.layers==currentLayer)
{
a=i;
//alert(a);
i = doc.layers.length;
}
else{ i++; }
}

currentLayer.visible = false;
try
{
var nextLayer = doc.layers[a-1];
}
catch(e)
{
var nextLayer = doc.layers[doc.layers.length-1];
}
nextLayer.visible = true;
doc.activeLayer = nextLayer;

lukasz · Post by **lukasz** » Tue Oct 11, 2011 3:40 pm

that worked perfect. one more issue though.
documentation says index is method of layers, but I can't seem to select via the index. any idea whats going on?

Code: Select allvar newActivelayer = doc.layers.index(1);

larsen67 · Post by **larsen67** » Tue Oct 11, 2011 5:45 pm

Not like that…

Code: Select allapp.activeDocument.activeLayer = app.activeDocument.layers[1];

Index inside of a square bracket pair…

lukasz · Post by **lukasz** » Wed Oct 12, 2011 1:01 pm

doh, ok works get thanks!

lukasz · Post by **lukasz** » Wed Oct 12, 2011 2:01 pm

still a little hiccup. doesnt seem to want to select next layer, however it does make it visible? which seems weird because it makes it visible after it selects the layer in the code, or should? but in the document the next layer is not selected.

Code: Select all#target illustrator

var activelayer = app.activeDocument.activeLayer;
activelayer.visible = false;

for(i=0; i < doc.layers.length; )
{
if(doc.layers==activelayer)
{
var a = i;
alert(a);
var i = doc.layers.length;
var b = a+1;
}
else{ i++; }
}

app.activeDocument.activeLayer = app.activeDocument.layers;
var activelayer = app.activeDocument.activeLayer;
activelayer.visible = true;

larsen67 · Post by **larsen67** » Wed Oct 12, 2011 3:06 pm

#target illustrator

Sorry but you can't expect the syntax of Photoshop to work with Illustrator… While there are common objects like app & doc little else will work… In PS layers can exist inside a doc or layer set… In Illustrator they can exist anywhere… other layers, groups, etc… this needs to be scripted as per the Illustrator DOM…

lukasz · Post by **lukasz** » Wed Oct 12, 2011 3:51 pm

hmmm, interesting. I understand not all of it will work. but usually the core dom is the same, they do handle layers differently though. i will look into that.

Mike Hale · Post by **Mike Hale** » Wed Oct 12, 2011 5:03 pm

lukasz wrote:but usually the core dom is the same

It has been my experience that the core javascript is the same, but the DOM's for each Adobe app have little if anything in common.

larsen67 · Post by **larsen67** » Wed Oct 12, 2011 9:07 pm

Try getting the name of your active layer… You will see it's the one you wanted it's just a lazy UI that does not redraw as you would expect… Even app.redraw() will not refresh this for you…