How to get the style of a layer using photoshop scripting ??

Apologies for necroing this discussion. I have something to add because I need to validate a layer effect's stroke size, color, and position (inside/outside/center). My finding is not a complete solution, but it is a thread to pull on.

I'm not sure when it was added, but the current version of Ps has a Layer > Copy CSS menu item. This includes the styling information of the document.activeLayer, which should in theory be parsable to get all of the style info. Here's an example of the CSS:

.Rectangle_1 {
  border-style: solid;
  border-width: 20px;
  border-color: rgb(71, 76, 145);
  background-color: rgb(0, 0, 0);
  position: absolute;
  left: 2455px;
  top: 3855px;
  width: 1054px;
  height: 1038px;
  z-index: 3;
}

The menu item can be invoked with the following ScriptListener JS code. 

function copyCss() {
  var d = new ActionDescriptor()
  var r = new ActionReference()
  r.putEnumerated( chID( "Lyr " ), chID( "Ordn" ), chID( "Trgt" ) )
  d.putReference( chID( "null" ), r )
  executeAction( stID( "copyLayerCSS" ), d, DialogModes.NO )

  function stID(str) { return stringIDToTypeID(str) }
  function chID(ch) { return charIDToTypeID(ch) }
}

However, this places the data in the clipboard and I'm having trouble getting document.paste() to insert this text into somewhere useful that the script can read. I tried making a text layer, but it isn't in a state where the text can be accepted from pasting. I've also tried paste(intoSelection), but that appears to be meant for image data. Finally, I also looked into using system() to put the clipboard contents into a file for reading, but Windows doesn't have built-in support for pasting from the command line.

Please add to this if you find a way to do any of that or another method. Thanks.

Does anybody know how we can take the properties of a layer style? For example, the colors of the gradient fill, etc.

Thanks in advance!

I’m afraid there’s no way to get the name of a Style from a Layer as Styles don’t work that way – but maybe someone else knows different …

I suppose a work-around would be to copy the style and paste it on the intended layer; you should be able to use Scripting Listener-code for that, something like this:

function transferEffects (layer1, layer2) {

app.activeDocument.activeLayer = layer1;

var id157 = charIDToTypeID( "CpFX" );

executeAction( id157, undefined, DialogModes.ALL );

app.activeDocument.activeLayer = layer2;

var id158 = charIDToTypeID( "PaFX" );

executeAction( id158, undefined, DialogModes.ALL );

};