WebKit/mac/WebView/WebDynamicScrollBarsView.h

/*
 * Copyright (C) 2005, 2008 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. 
 * 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.
 */

// This is a Private header (containing SPI), despite the fact that its name
// does not contain the word Private.

// This was once used by Safari, but has not been for a long time.

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

@interface WebDynamicScrollBarsView : NSScrollView {
    int hScroll; // FIXME: Should be WebCore::ScrollbarMode if this was an ObjC++ header.
    int vScroll; // Ditto.
    BOOL hScrollModeLocked;
    BOOL vScrollModeLocked;
    BOOL suppressLayout;
    BOOL suppressScrollers;
    BOOL inUpdateScrollers;
    BOOL verticallyPinnedByPreviousWheelEvent;
    BOOL horizontallyPinnedByPreviousWheelEvent;
    unsigned inUpdateScrollersLayoutPass;
}

// 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;
@end