Fixed #14319

primefaces · Jan 10, 2024 · b61fa9c · b61fa9c
1 parent 94a19bf
commit b61fa9c
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Showing 2 changed files with 54 additions and 1 deletion.
diff --git a/src/app/components/dropdown/dropdown.ts b/src/app/components/dropdown/dropdown.ts
@@ -693,7 +693,9 @@ export class Dropdown implements OnInit, AfterViewInit, AfterContentInit, AfterV
         return options;
     }
     set options(val: any[] | undefined) {
-        this._options.set(val);
+        if (!ObjectUtils.deepEquals(val, this._options())) {
+            this._options.set(val);
+        }
     }
     /**
      * Callback to invoke when value of dropdown changes.

diff --git a/src/app/components/utils/objectutils.ts b/src/app/components/utils/objectutils.ts
@@ -226,4 +226,55 @@ export class ObjectUtils {
 
         return item;
     }
+
+    public static deepEquals(a, b) {
+        if (a === b) return true;
+
+        if (a && b && typeof a == 'object' && typeof b == 'object') {
+            var arrA = Array.isArray(a),
+                arrB = Array.isArray(b),
+                i,
+                length,
+                key;
+
+            if (arrA && arrB) {
+                length = a.length;
+                if (length != b.length) return false;
+                for (i = length; i-- !== 0; ) if (!this.deepEquals(a[i], b[i])) return false;
+
+                return true;
+            }
+
+            if (arrA != arrB) return false;
+
+            var dateA = a instanceof Date,
+                dateB = b instanceof Date;
+
+            if (dateA != dateB) return false;
+            if (dateA && dateB) return a.getTime() == b.getTime();
+
+            var regexpA = a instanceof RegExp,
+                regexpB = b instanceof RegExp;
+
+            if (regexpA != regexpB) return false;
+            if (regexpA && regexpB) return a.toString() == b.toString();
+
+            var keys = Object.keys(a);
+
+            length = keys.length;
+
+            if (length !== Object.keys(b).length) return false;
+
+            for (i = length; i-- !== 0; ) if (!Object.prototype.hasOwnProperty.call(b, keys[i])) return false;
+
+            for (i = length; i-- !== 0; ) {
+                key = keys[i];
+                if (!this.deepEquals(a[key], b[key])) return false;
+            }
+
+            return true;
+        }
+
+        return a !== a && b !== b;
+    }
 }