From 8f7d3b7db6acd807781ca57ffcbe06f2ec731d10 Mon Sep 17 00:00:00 2001
From: Artur Arseniev <artur.catch@hotmail.it>
Date: Tue, 14 Dec 2021 12:50:23 +0100
Subject: [PATCH] Add getLayerLabel to Stack

---
 src/style_manager/model/PropertyStack.js | 30 ++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/src/style_manager/model/PropertyStack.js b/src/style_manager/model/PropertyStack.js
index ed0c7162f..540e1eca9 100644
--- a/src/style_manager/model/PropertyStack.js
+++ b/src/style_manager/model/PropertyStack.js
@@ -35,6 +35,9 @@ export default Property.extend({
     // Parse single layer value string
     parseLayer: null,
 
+    // Custom layer label function
+    layerLabel: null,
+
     // Current selected layer
     selectedLayer: null,
   },
@@ -243,6 +246,33 @@ export default Property.extend({
     return layer && this.selectLayer(layer);
   },
 
+  /**
+   * Get layer label
+   * @param {[Layer]} layer
+   * @returns {String}
+   */
+  getLayerLabel(layer) {
+    let result = '';
+
+    if (layer) {
+      const layerLabel = this.get('layerLabel');
+      const values = layer.getValues();
+      const index = layer.getIndex();
+
+      if (layerLabel) {
+        result = layerLabel(layer, { index, values });
+      } else {
+        const parts = [];
+        this.getProperties().map(prop => {
+          parts.push(values[prop.getId()]);
+        });
+        result = parts.filter(Boolean).join(' ');
+      }
+    }
+
+    return result;
+  },
+
   /**
    * Get selected layer
    * @returns {[Layer] | null}