1 files changed, 129 insertions, 0 deletions
diff --git a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/container/ContainerEvent.java b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/container/ContainerEvent.java
new file mode 100644
index 0000000000..8439af05c3
--- /dev/null
+++ b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/container/ContainerEvent.java
@@ -0,0 +1,129 @@
+/***************************************************************************
+ * 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.IContainerEventVisitor.Filtered;
+import org.eclipse.net4j.util.event.Event;
+
+import java.text.MessageFormat;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * @author Eike Stepper
+ */
+public class ContainerEvent<E> extends Event implements IContainerEvent<E>
+{
+  private static final long serialVersionUID = 1L;
+
+  private List<IContainerDelta<E>> deltas;
+
+  public ContainerEvent(IContainer<E> container)
+  {
+    super(container);
+    deltas = new ArrayList<IContainerDelta<E>>();
+  }
+
+  public ContainerEvent(IContainer<E> container, List<IContainerDelta<E>> deltas)
+  {
+    super(container);
+    this.deltas = deltas;
+  }
+
+  @SuppressWarnings("unchecked")
+  public IContainer<E> getContainer()
+  {
+    return (IContainer<E>)getSource();
+  }
+
+  public boolean isEmpty()
+  {
+    return deltas.isEmpty();
+  }
+
+  @SuppressWarnings("unchecked")
+  public IContainerDelta<E>[] getDeltas()
+  {
+    return deltas.toArray(new IContainerDelta[deltas.size()]);
+  }
+
+  public IContainerDelta<E> getDelta() throws IllegalStateException
+  {
+    if (deltas.size() != 1)
+    {
+      throw new IllegalStateException("deltas.size() != 1");
+    }
+
+    return deltas.get(0);
+  }
+
+  public E getDeltaElement() throws IllegalStateException
+  {
+    return getDelta().getElement();
+  }
+
+  public IContainerDelta.Kind getDeltaKind() throws IllegalStateException
+  {
+    return getDelta().getKind();
+  }
+
+  public void addDelta(E element, IContainerDelta.Kind kind)
+  {
+    addDelta(new ContainerDelta<E>(element, kind));
+  }
+
+  public void addDelta(IContainerDelta<E> delta)
+  {
+    deltas.add(delta);
+  }
+
+  public void accept(IContainerEventVisitor<E> visitor)
+  {
+    for (IContainerDelta<E> delta : deltas)
+    {
+      E element = delta.getElement();
+
+      boolean filtered = true;
+      if (visitor instanceof Filtered)
+      {
+        filtered = ((Filtered<E>)visitor).filter(element);
+      }
+
+      if (filtered)
+      {
+        switch (delta.getKind())
+        {
+        case ADDED:
+          visitor.added(element);
+          break;
+        case REMOVED:
+          visitor.removed(element);
+          break;
+        }
+      }
+    }
+  }
+
+  @Override
+  public String toString()
+  {
+    StringBuilder builder = new StringBuilder();
+    for (IContainerDelta<E> delta : getDeltas())
+    {
+      builder.append(", ");
+      builder.append(delta.getKind());
+      builder.append("=");
+      builder.append(delta.getElement());
+    }
+
+    return MessageFormat.format("ContainerEvent[source={0}{1}]", getSource(), builder.toString());
+  }
+}