/*

 * Copyright (C) 2005 Apple Computer, 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. 

 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of

 *     its contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission. 

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE 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 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.

 */

#import <WebKit/WebFrameView.h>

@interface WebFrameView (WebPrivate)

// FIXME: This method was used by Safari 4.0.x and older versions, but has not been used by any other WebKit

// clients to my knowledge, and will not be used by future versions of Safari. It can probably be removed 

// once we no longer need to keep nightly WebKit builds working with Safari 4.0.x and earlier.

/*!

    @method _largestChildWithScrollBars

    @abstract Of the child WebFrameViews that are displaying scroll bars, determines which has the largest area.

    @result A child WebFrameView that is displaying scroll bars, or nil if none.

 */

- (WebFrameView *)_largestChildWithScrollBars;

// FIXME: This method was used by Safari 4.0.x and older versions, but has not been used by any other WebKit

// clients to my knowledge, and will not be used by future versions of Safari. It can probably be removed 

// once we no longer need to keep nightly WebKit builds working with Safari 4.0.x and earlier.

/*!

    @method _hasScrollBars

    @result YES if at least one scroll bar is currently displayed

 */

- (BOOL)_hasScrollBars;

/*!

    @method _largestScrollableChild

    @abstract Of the child WebFrameViews that allow scrolling, determines which has the largest area.

    @result A child WebFrameView that is scrollable, or nil if none.

 */

- (WebFrameView *)_largestScrollableChild;

/*!

    @method _isScrollable

    @result YES if scrolling is currently possible, whether or not scroll bars are currently showing. This

    differs from -allowsScrolling in that the latter method only checks whether scrolling has been

    explicitly disallowed via a call to setAllowsScrolling:NO.

 */

- (BOOL)_isScrollable;

/*!

    @method _contentView

    @result The content view (NSClipView) of the WebFrameView's scroll view.

 */

- (NSClipView *)_contentView;

/*!

    @method _customScrollViewClass

    @result The custom scroll view class that is installed, nil if the default scroll view is being used.

 */

- (Class)_customScrollViewClass;

/*!

    @method _setCustomScrollViewClass:

    @result Switches the WebFrameView's scroll view class, this class needs to be a subclass of WebDynamicScrollBarsView.

    Passing nil will switch back to the default WebDynamicScrollBarsView class.

 */

- (void)_setCustomScrollViewClass:(Class)scrollViewClass;

@end