1 files changed, 60 insertions, 0 deletions
diff --git a/src/main/java/eu/siacs/conversations/entities/Presences.java b/src/main/java/eu/siacs/conversations/entities/Presences.java
new file mode 100644
index 00000000..813eda7a
--- /dev/null
+++ b/src/main/java/eu/siacs/conversations/entities/Presences.java
@@ -0,0 +1,60 @@
+package eu.siacs.conversations.entities;
+
+import java.util.Collections;
+import java.util.Hashtable;
+import java.util.Iterator;
+
+import eu.siacs.conversations.xml.Element;
+
+public class Presences {
+	private final Hashtable<String, Presence> presences = new Hashtable<>();
+
+	public Hashtable<String, Presence> getPresences() {
+		return this.presences;
+	}
+
+	public void updatePresence(String resource, Presence presence) {
+		synchronized (this.presences) {
+			this.presences.put(resource, presence);
+		}
+	}
+
+	public void removePresence(String resource) {
+		synchronized (this.presences) {
+			this.presences.remove(resource);
+		}
+	}
+
+	public void clearPresences() {
+		synchronized (this.presences) {
+			this.presences.clear();
+		}
+	}
+
+	public Presence getMostAvailablePresence() {
+		synchronized (this.presences) {
+			if (presences.size() < 1) { return null; }
+			return Collections.min(presences.values());
+		}
+	}
+
+	public int size() {
+		synchronized (this.presences) {
+			return presences.size();
+		}
+	}
+
+	public String[] asStringArray() {
+		synchronized (this.presences) {
+			final String[] presencesArray = new String[presences.size()];
+			presences.keySet().toArray(presencesArray);
+			return presencesArray;
+		}
+	}
+
+	public boolean has(String presence) {
+		synchronized (this.presences) {
+			return presences.containsKey(presence);
+		}
+	}
+}