SetLayerNameToSymbolName.js

@import 'common.js'

var onRun = function(context) {

	//reference the sketch document
	var doc = context.document;
	//reference what is selected
	var selection = context.selection;

	//make sure something is selected
	if(selection.count() == 0){
		doc.showMessage("Please select something.");
	}else{
		//loop through the selected layers
		for(var i = 0; i < selection.count(); i++){

			//checks to see if the layer is a Symbol
			if(selection[i].class() == "MSSymbolInstance"){

				//reference the selection
				var layer = selection[i];
				//get the original layer name
				var layerName = layer.name();
				//get the name of the symbol on the layer
				var symbolName = layer.symbolMaster().name();

				//check if layer name is not already symbol name
				if(layerName != symbolName){
					//set the layer name to the symbol name
					layer.setName(symbolName);
					
					var alertMessage = "Layer Name Changed from: "+layerName+ " to: "+symbolName;
					alert("Layer Name Changed!", alertMessage);

				}else{
					doc.showMessage("Layer name is already Symbol Name.");
				}

			}else{
				doc.showMessage("Please select a Symbol Layer.");
			}
		}
	}
}