From 104146c5ed53813a8b97e39c4a9c9980a57685da Mon Sep 17 00:00:00 2001
From: Florian Schmaus <flo@geekplace.eu>
Date: Mon, 17 Jul 2017 20:37:49 +0200
Subject: [PATCH] Add Jingle.getSoleContentOrThrow()

---
 .../smackx/jingle/element/Jingle.java         | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/element/Jingle.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/element/Jingle.java
index 3106563d8..3f7ac01c9 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/element/Jingle.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/element/Jingle.java
@@ -135,6 +135,25 @@ public final class Jingle extends IQ {
         return contents;
     }
 
+    /**
+     * Get the only jingle content if one exists, or <code>null</code>. This method will throw an
+     * {@link IllegalStateException} if there is more than one jingle content.
+     *
+     * @return a JingleContent instance or <code>null</code>.
+     * @throws IllegalStateException if there is more than one jingle content.
+     */
+    public JingleContent getSoleContentOrThrow() {
+        if (contents.isEmpty()) {
+            return null;
+        }
+
+        if (contents.size() > 1) {
+            throw new IllegalStateException();
+        }
+
+        return contents.get(0);
+    }
+
     @Override
     protected IQChildElementXmlStringBuilder getIQChildElementBuilder(IQChildElementXmlStringBuilder xml) {
         xml.optAttribute(INITIATOR_ATTRIBUTE_NAME, getInitiator());