1 files changed, 74 insertions, 0 deletions
diff --git a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/collection/HistoryElement.java b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/collection/HistoryElement.java
new file mode 100644
index 0000000000..e7cf8318b4
--- /dev/null
+++ b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/collection/HistoryElement.java
@@ -0,0 +1,74 @@
+/***************************************************************************
+ * 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.collection;
+
+import org.eclipse.net4j.util.ObjectUtil;
+
+/**
+ * @author Eike Stepper
+ */
+public class HistoryElement<T> implements IHistoryElement<T>
+{
+  private IHistory<IHistoryElement<T>> history;
+
+  private T data;
+
+  public HistoryElement(IHistory<IHistoryElement<T>> history, T data)
+  {
+    this.history = history;
+    this.data = data;
+  }
+
+  public IHistory<IHistoryElement<T>> getHistory()
+  {
+    return history;
+  }
+
+  public T getData()
+  {
+    return data;
+  }
+
+  public String getText()
+  {
+    return data.toString();
+  }
+
+  @SuppressWarnings("unchecked")
+  @Override
+  public boolean equals(Object obj)
+  {
+    if (obj == this)
+    {
+      return true;
+    }
+
+    if (obj instanceof IHistoryElement)
+    {
+      IHistoryElement<T> that = (IHistoryElement<T>)obj;
+      return ObjectUtil.equals(history, that.getHistory()) && ObjectUtil.equals(data, that.getData());
+    }
+
+    return false;
+  }
+
+  @Override
+  public int hashCode()
+  {
+    return history.hashCode() ^ data.hashCode();
+  }
+
+  @Override
+  public String toString()
+  {
+    return getText();
+  }
+}