Update from Google.

--
MOE_MIGRATED_REVID=85702957

1 files changed, 36 insertions, 0 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/events/AbstractEventHandler.java b/src/main/java/com/google/devtools/build/lib/events/AbstractEventHandler.java
new file mode 100644
index 0000000000..39faf14e1d
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/events/AbstractEventHandler.java
@@ -0,0 +1,36 @@
+// Copyright 2014 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package com.google.devtools.build.lib.events;
+
+import java.util.Set;
+
+/**
+ * An abstract event handler that keeps track of the event mask. Events
+ * matching the mask will be handled.
+ */
+public abstract class AbstractEventHandler implements EventHandler {
+
+  private final Set<EventKind> mask;
+
+  /**
+   * Events matching the mask will be handled.
+   */
+  public AbstractEventHandler(Set<EventKind> mask) {
+    this.mask = mask;
+  }
+
+  public Set<EventKind> getEventMask() {
+    return mask;
+  }
+}