content: /*
   * Copyright (C) 2011 Patrik Akerfeldt
   * Copyright (C) 2011 Jake Wharton
   *
   * 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 viewpagerindicator;
  
  import android.support.v4.view.ViewPager;
  
  /**
   * A PageIndicator is responsible to show an visual indicator on the total views
   * number and the current visible view.
   */
  public interface PageIndicator extends ViewPager.OnPageChangeListener {
      /**
       * Bind the indicator to a ViewPager.
       *
       * @param view
       */
      void setViewPager(ViewPager view);
  
      /**
       * Bind the indicator to a ViewPager.
       *
       * @param view
       * @param initialPosition
       */
      void setViewPager(ViewPager view, int initialPosition);
  
      /**
       * <p>Set the current page of both the ViewPager and indicator.</p>
       *
       * <p>This <strong>must</strong> be used if you need to set the page before
       * the views are drawn on screen (e.g., default start page).</p>
       *
       * @param item
       */
      void setCurrentItem(int item);
  
      /**
       * Set a page change listener which will receive forwarded events.
       *
       * @param listener
       */
      void setOnPageChangeListener(ViewPager.OnPageChangeListener listener);
  
      /**
       * Notify the indicator that the fragment list has changed.
       */
      void notifyDataSetChanged();
  }
  