/*

 * Copyright (C) 2005, 2008, 2010 Apple Inc. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''

 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS

 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF

 * THE POSSIBILITY OF SUCH DAMAGE.

 */

// This is a Private header (containing SPI), despite the fact that its name

// does not contain the word Private.

#import <AppKit/NSScrollView.h>

// FIXME: <rdar://problem/5898985> Mail currently expects this header to define WebCoreScrollbarAlwaysOn.

extern const int WebCoreScrollbarAlwaysOn;

struct WebDynamicScrollBarsViewPrivate;

@interface WebDynamicScrollBarsView : NSScrollView {

@private

    struct WebDynamicScrollBarsViewPrivate *_private;

#ifndef __OBJC2__

    // We need to pad the class out to its former size.  See <rdar://problem/7814899> for more information.

    char padding[16];

#endif

}

// This was originally added for Safari's benefit, but Safari has not used it for a long time.

// Perhaps it can be removed.

- (void)setAllowsHorizontalScrolling:(BOOL)flag;

// Determines whether the scrollers should be drawn outside of the content (as in normal scroll views)

// or should overlap the content.

- (void)setAllowsScrollersToOverlapContent:(BOOL)flag;

// These methods hide the scrollers in a way that does not prevent scrolling.

- (void)setAlwaysHideHorizontalScroller:(BOOL)flag;

- (void)setAlwaysHideVerticalScroller:(BOOL)flag;

// These methods return YES if the scrollers are visible, or if the only reason that they are not

// visible is that they have been suppressed by setAlwaysHideHorizontal/VerticalScroller:.

- (BOOL)horizontalScrollingAllowed;

- (BOOL)verticalScrollingAllowed;

@end