app_list_pager_view.h revision b2df76ea8fec9e32f6f3718986dba0d95315b29c 
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_APP_LIST_PAGER_VIEW_H_
6#define UI_APP_LIST_COCOA_APP_LIST_PAGER_VIEW_H_
7
8#import <Cocoa/Cocoa.h>
9
10#import "ui/base/cocoa/tracking_area.h"
11
12@class AppListPagerView;
13
14// Delegate to obtain the visible portion of a page and respond to clicks.
15@protocol AppListPagerDelegate<NSObject>
16
17// Returns the portion of a page that is visible, in the range (-1.0, 1.0].
18// Positive indicates the left side is visible, negative indicates the right.
19- (CGFloat)visiblePortionOfPage:(int)page;
20
21// Invoked when the pager is clicked.
22- (void)onPagerClicked:(AppListPagerView*)sender;
23
24@end
25
26// AppListPagerView draws a button strip with buttons representing pages, and a
27// highlight that mirrors the visible portion of the page.
28@interface AppListPagerView : NSSegmentedControl {
29 @private
30  // Used to auto-select a segment on hover.
31  ui::ScopedCrTrackingArea trackingArea_;
32
33  // The segment currently highlighted with a mouse hover, or -1 for none.
34  NSInteger hoveredSegment_;
35}
36
37@end
38
39#endif  // UI_APP_LIST_COCOA_APP_LIST_PAGER_VIEW_H_
40