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

    27 // does not contain the word Private.

    28 

    29 #import <AppKit/NSScrollView.h>

    30 

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

    32 extern const int WebCoreScrollbarAlwaysOn;

    33 

    34 struct WebDynamicScrollBarsViewPrivate;

    35 @interface WebDynamicScrollBarsView : NSScrollView {

    36 @private

    37     struct WebDynamicScrollBarsViewPrivate *_private;

    38 

    39 #ifndef __OBJC2__

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

    41     char padding[16];

    42 #endif

    43 }

    44 

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

    46 // Perhaps it can be removed.

    47 - (void)setAllowsHorizontalScrolling:(BOOL)flag;

    48 

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

    50 // or should overlap the content.

    51 - (void)setAllowsScrollersToOverlapContent:(BOOL)flag;

    52 

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

    54 - (void)setAlwaysHideHorizontalScroller:(BOOL)flag;

    55 - (void)setAlwaysHideVerticalScroller:(BOOL)flag;

    56 

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

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

    59 - (BOOL)horizontalScrollingAllowed;

    60 - (BOOL)verticalScrollingAllowed;

    61 @end