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K
karizmaa17812467
Known Participant
September 9, 2020
Answered

Count Layer Numbers

  • September 9, 2020
  • 3 replies
  • 888 views

Expected Script for count numbers of layers by specified name.

e.g. 8 Layers (name = "Ok_layers) +  2 Layers (name = "Top_layers) = Total 10 Layers

 

so if want to count  Layers with name = "Ok_layers then it should show message  ... 8 layers

This topic has been closed for replies.
Correct answer rob day
#target photoshop
var lyrs = app.activeDocument.layers
var c = 0;
var n = "Ok_layers"
for (var i = 0; i < lyrs.length; i++){
    if (lyrs[i].name == n) {c++} 
};   
alert("Document has a total of " + lyrs.length + " layers\n" + c + " are named " + n)

3 replies

M
Manan Joshi
Braniac
September 9, 2020

Try the following code, it does not use AM code and can handle layers in groups as well

function findLayerCount(l, layerName)
{
	var count = 0;
	var layerCount = l.layers.length;
	for (var j = layerCount - 1; j >= 0; j--)
	{
		if(l.layers[j].constructor.name == "LayerSet")
		{
			var retval = findLayerCount(l.layers[j], layerName)
			count += retval;
			continue;
		}
			
		if(l.layers[j].name == layerName)
			count++;
	}
	return count ++
}
		
var c = findLayerCount(app.activeDocument, "Layer 8")
alert(c + " layers")

-Manan

    c.pfaffenbichler
    c.pfaffenbichler
    Braniac
    September 9, 2020

    I didn’t run a test in this case, but in my experience the DOM-code might be noticably slower than AM-code depending on the number of layers in particular. 

      M
      Manan Joshi
      Braniac
      September 9, 2020

      Yeah, sure you are right about that. It's just that the AM code looks quite intimidating, my intention was to give an alternative so that a user gets to know what can be and can't be done using the DOM code. When I started PS scripting I wanted to avoid AM as a plague, during that phase when I could make no sense of AM I did not like to pick code snippets that I did not understand but did do what I needed.

      It's just an effort to help someone like-minded 🙂

      -Manan

        rob day
        rob dayCorrect answer
        Braniac
        September 9, 2020
        #target photoshop
var lyrs = app.activeDocument.layers
var c = 0;
var n = "Ok_layers"
for (var i = 0; i < lyrs.length; i++){
    if (lyrs[i].name == n) {c++} 
};   
alert("Document has a total of " + lyrs.length + " layers\n" + c + " are named " + n)
          K
          karizmaa17812467Author
          Known Participant
          September 9, 2020

          just i want to alert = 

          Please Open {No of counted "ok_Layers"}Photos     [Bold]

          Second line text here                                        [Normal]

           

           

           

           

          c.pfaffenbichler
          c.pfaffenbichler
          Braniac
          September 9, 2020
          // 2020, use it at your own risk;
if (app.documents.length > 0) {
var thisName = "aaa";
var theLayers = collectLayersByName(thisName);
alert (theLayers.length+" layers of the name »"+thisName+"«\n\n"+theLayers.join("\n"))
};
////// collect layers with certain name //////
function collectLayersByName (aName) {
// the file;
var myDocument = app.activeDocument;
// get number of layers;
var ref = new ActionReference();
ref.putProperty(stringIDToTypeID('property'), stringIDToTypeID('numberOfLayers'));
ref.putEnumerated( charIDToTypeID("Dcmn"), charIDToTypeID("Ordn"), charIDToTypeID("Trgt") ); 
var applicationDesc = executeActionGet(ref);
var theNumber = applicationDesc.getInteger(stringIDToTypeID("numberOfLayers"));
// process the layers;
var theLayers = new Array;
for (var m = 0; m <= theNumber; m++) {
try {
var ref = new ActionReference();
ref.putIndex( charIDToTypeID( "Lyr " ), m);
var layerDesc = executeActionGet(ref);
var layerSet = typeIDToStringID(layerDesc.getEnumerationValue(stringIDToTypeID("layerSection")));
var isBackground = layerDesc.getBoolean(stringIDToTypeID("background"));
// if group collect values;
if (layerSet != "layerSectionEnd" /*&& layerSet != "layerSectionStart" && isBackground != true*/) {
var theName = layerDesc.getString(stringIDToTypeID('name'));
var theID = layerDesc.getInteger(stringIDToTypeID('layerID'));
var theIndex = layerDesc.getInteger(stringIDToTypeID('itemIndex'));
if (theName == aName) {theLayers.push([theName, theIndex, theID])}
};
}
catch (e) {};
};
return theLayers
};
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