1 files changed, 62 insertions, 0 deletions
diff --git a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/container/Container.java b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/container/Container.java
new file mode 100644
index 0000000000..520d627428
--- /dev/null
+++ b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/container/Container.java
@@ -0,0 +1,62 @@
+/***************************************************************************
+ * Copyright (c) 2004 - 2008 Eike Stepper, Germany.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ * 
+ * Contributors:
+ *    Eike Stepper - initial API and implementation
+ **************************************************************************/
+package org.eclipse.net4j.util.container;
+
+import org.eclipse.net4j.util.container.IContainerDelta.Kind;
+import org.eclipse.net4j.util.lifecycle.Lifecycle;
+
+import java.util.List;
+
+/**
+ * @author Eike Stepper
+ */
+public abstract class Container<E> extends Lifecycle implements IContainer<E>
+{
+  public Container()
+  {
+  }
+
+  public boolean isEmpty()
+  {
+    E[] elements = getElements();
+    return elements == null || elements.length == 0;
+  }
+
+  public void fireElementAddedEvent(E element)
+  {
+    fireContainerEvent(element, IContainerDelta.Kind.ADDED);
+  }
+
+  public void fireElementRemovedEvent(E element)
+  {
+    fireContainerEvent(element, IContainerDelta.Kind.REMOVED);
+  }
+
+  public void fireContainerEvent(E element, Kind kind)
+  {
+    fireEvent(newContainerEvent(element, kind));
+  }
+
+  public void fireContainerEvent(List<IContainerDelta<E>> deltas)
+  {
+    fireEvent(new ContainerEvent<E>(this, deltas));
+  }
+
+  protected SingleDeltaContainerEvent<E> newContainerEvent(E element, IContainerDelta.Kind kind)
+  {
+    return new SingleDeltaContainerEvent<E>(this, element, kind);
+  }
+
+  protected ContainerEvent<E> newContainerEvent()
+  {
+    return new ContainerEvent<E>(this);
+  }
+}