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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef UI_APP_LIST_COCOA_APPS_PAGINATION_MODEL_OBSERVER_H_
      6 #define UI_APP_LIST_COCOA_APPS_PAGINATION_MODEL_OBSERVER_H_
      7 
      8 // Observer protocol for page changes. Compare with
      9 // app_list::PaginationModelObserver.
     10 @protocol AppsPaginationModelObserver
     11 
     12 // Invoked when the total number of pages has changed.
     13 - (void)totalPagesChanged;
     14 
     15 // Invoked when the selected page index is changed.
     16 - (void)selectedPageChanged:(int)newSelected;
     17 
     18 // Invoked when the portion of pages that are visible have changed.
     19 - (void)pageVisibilityChanged;
     20 
     21 // Return a pager segment at |locationInWindow| or -1 if there is none.
     22 - (NSInteger)pagerSegmentAtLocation:(NSPoint)locationInWindow;
     23 
     24 @end
     25 
     26 #endif  // UI_APP_LIST_COCOA_APPS_PAGINATION_MODEL_OBSERVER_H_
     27