content: /*
   * 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.android.internal.widget;
  
  import android.view.View;
  
  /**
   * An interface used by LockScreenWidgets to send messages to lock screen.
   */
  public interface LockScreenWidgetCallback {
      // Sends a message to lock screen requesting the given view be shown.  May be ignored, depending
      // on lock screen state. View must be the top-level lock screen widget or it will be ignored.
      public void requestShow(View self);
  
      // Sends a message to lock screen requesting the view to be hidden.
      public void requestHide(View self);
  
      // Whether or not this view is currently visible on LockScreen
      public boolean isVisible(View self);
  
      // Sends a message to lock screen that user has interacted with widget. This should be used
      // exclusively in response to user activity, i.e. user hits a button in the view.
      public void userActivity(View self);
  
  }
  