Added ActionBarSherlock library compatiblity support

libs/ActionBarSherlock/src/com/actionbarsherlock/view/CollapsibleActionView.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * 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.actionbarsherlock.view;
+
+/**
+ * When a {@link View} implements this interface it will receive callbacks
+ * when expanded or collapsed as an action view alongside the optional,
+ * app-specified callbacks to {@link OnActionExpandListener}.
+ *
+ * <p>See {@link MenuItem} for more information about action views.
+ * See {@link android.app.ActionBar} for more information about the action bar.
+ */
+public interface CollapsibleActionView {
+    /**
+     * Called when this view is expanded as an action view.
+     * See {@link MenuItem#expandActionView()}.
+     */
+    public void onActionViewExpanded();
+
+    /**
+     * Called when this view is collapsed as an action view.
+     * See {@link MenuItem#collapseActionView()}.
+     */
+    public void onActionViewCollapsed();
+}