1/*
2 * Copyright (C) 2005, 2008, 2010 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#if TARGET_OS_IPHONE
27// In iOS WebKit, WebDynamicScrollBarsView is a WAKScrollView.
28// See WebCore/WAKAppKitStubs.h.
29#else
30// This is a Private header (containing SPI), despite the fact that its name
31// does not contain the word Private.
32
33#import <AppKit/NSScrollView.h>
34
35// FIXME: <rdar://problem/5898985> Mail currently expects this header to define WebCoreScrollbarAlwaysOn.
36extern const int WebCoreScrollbarAlwaysOn;
37
38struct WebDynamicScrollBarsViewPrivate;
39@interface WebDynamicScrollBarsView : NSScrollView {
40@private
41    struct WebDynamicScrollBarsViewPrivate *_private;
42
43#ifndef __OBJC2__
44    // We need to pad the class out to its former size.  See <rdar://problem/7814899> for more information.
45    char padding[16];
46#endif
47}
48
49// For use by DumpRenderTree only.
50+ (void)setCustomScrollerClass:(Class)scrollerClass;
51
52// This was originally added for Safari's benefit, but Safari has not used it for a long time.
53// Perhaps it can be removed.
54- (void)setAllowsHorizontalScrolling:(BOOL)flag;
55
56// Determines whether the scrollers should be drawn outside of the content (as in normal scroll views)
57// or should overlap the content.
58- (void)setAllowsScrollersToOverlapContent:(BOOL)flag;
59
60// These methods hide the scrollers in a way that does not prevent scrolling.
61- (void)setAlwaysHideHorizontalScroller:(BOOL)flag;
62- (void)setAlwaysHideVerticalScroller:(BOOL)flag;
63
64// These methods return YES if the scrollers are visible, or if the only reason that they are not
65// visible is that they have been suppressed by setAlwaysHideHorizontal/VerticalScroller:.
66- (BOOL)horizontalScrollingAllowed;
67- (BOOL)verticalScrollingAllowed;
68@end
69
70#endif // !TARGET_OS_IPHONE
71