From 1b2231be0b512090376c03e1b966cdc1759bc7db Mon Sep 17 00:00:00 2001
From: Florian Schmaus <flo@geekplace.eu>
Date: Tue, 10 Jun 2014 18:52:46 +0200
Subject: [PATCH] Add PacketExtensionFilter(PacketExtension) constructor

and PacketExtensionFilter(Class<? extends PacketExtension).
---
 .../smack/filter/PacketExtensionFilter.java         | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/smack-core/src/main/java/org/jivesoftware/smack/filter/PacketExtensionFilter.java b/smack-core/src/main/java/org/jivesoftware/smack/filter/PacketExtensionFilter.java
index 7d8fe5019..1d4fe220c 100644
--- a/smack-core/src/main/java/org/jivesoftware/smack/filter/PacketExtensionFilter.java
+++ b/smack-core/src/main/java/org/jivesoftware/smack/filter/PacketExtensionFilter.java
@@ -18,6 +18,7 @@
 package org.jivesoftware.smack.filter;
 
 import org.jivesoftware.smack.packet.Packet;
+import org.jivesoftware.smack.packet.PacketExtension;
 
 /**
  * Filters for packets with a particular type of packet extension.
@@ -26,8 +27,8 @@ import org.jivesoftware.smack.packet.Packet;
  */
 public class PacketExtensionFilter implements PacketFilter {
 
-    private String elementName;
-    private String namespace;
+    private final String elementName;
+    private final String namespace;
 
     /**
      * Creates a new packet extension filter. Packets will pass the filter if
@@ -52,6 +53,14 @@ public class PacketExtensionFilter implements PacketFilter {
         this(null, namespace);
     }
 
+    public PacketExtensionFilter(PacketExtension packetExtension) {
+        this(packetExtension.getElementName(), packetExtension.getNamespace());
+    }
+
+    public PacketExtensionFilter(Class<? extends PacketExtension> packetExtensionClass) throws InstantiationException, IllegalAccessException {
+        this(packetExtensionClass.newInstance());
+    }
+
     public boolean accept(Packet packet) {
         return packet.getExtension(elementName, namespace) != null;
     }