# HG changeset patch
# User Alexander Simon <alexvsimon@netbeans.org>
# Date 1410849291 -14400
#      Tue Sep 16 10:34:51 2014 +0400
# Node ID 907049d30401746f9b1c371271c13149ab16db8d
# Parent  fd6a6de7be2ba0857a3943400c470dbf1116ce2f
fixed Bug #247146 Inefficient removing all nodes from Children.Array

diff --git a/openide.nodes/src/org/openide/nodes/Children.java b/openide.nodes/src/org/openide/nodes/Children.java
--- a/openide.nodes/src/org/openide/nodes/Children.java
+++ b/openide.nodes/src/org/openide/nodes/Children.java
@@ -832,9 +832,26 @@
         @Override
         public boolean remove(final Node[] arr) {
             synchronized (COLLECTION_LOCK) {
-                if (!getCollection().removeAll(Arrays.asList(arr))) {
-                    // the collection was not changed
-                    return false;
+                final Collection<Node> collection = getCollection();
+                // fast check
+                boolean same = false;
+                if (collection.size() == arr.length) {
+                    same = true;
+                    int i = 0;
+                    for (Node n : collection) {
+                        if (n != arr[i++]) {
+                            same = false;
+                            break;
+                        }
+                    }
+                }
+                if (same) {
+                    collection.clear();
+                } else {
+                    if (!collection.removeAll(Arrays.asList(arr))) {
+                        // the collection was not changed
+                        return false;
+                    }
                 }
             }
 
@@ -842,7 +859,7 @@
 
             return true;
         }
-
+        
         /** One entry that holds all the nodes in the collection
         * member called nodes.
         */