1/* 2 * Copyright (C) 2014 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#include "config.h" 27#include "ScrollingTreeMac.h" 28 29#include "ScrollingTreeFixedNode.h" 30#include "ScrollingTreeFrameScrollingNodeMac.h" 31#include "ScrollingTreeStickyNode.h" 32 33#if ENABLE(ASYNC_SCROLLING) && PLATFORM(MAC) 34 35using namespace WebCore; 36 37RefPtr<ScrollingTreeMac> ScrollingTreeMac::create(AsyncScrollingCoordinator* scrollingCoordinator) 38{ 39 return adoptRef(new ScrollingTreeMac(scrollingCoordinator)); 40} 41 42ScrollingTreeMac::ScrollingTreeMac(AsyncScrollingCoordinator* scrollingCoordinator) 43 : ThreadedScrollingTree(scrollingCoordinator) 44{ 45} 46 47PassRefPtr<ScrollingTreeNode> ScrollingTreeMac::createScrollingTreeNode(ScrollingNodeType nodeType, ScrollingNodeID nodeID) 48{ 49 switch (nodeType) { 50 case FrameScrollingNode: 51 return ScrollingTreeFrameScrollingNodeMac::create(*this, nodeID); 52 case OverflowScrollingNode: 53 ASSERT_NOT_REACHED(); 54 return nullptr; 55 case FixedNode: 56 return ScrollingTreeFixedNode::create(*this, nodeID); 57 case StickyNode: 58 return ScrollingTreeStickyNode::create(*this, nodeID); 59 } 60 return nullptr; 61} 62 63#endif // ENABLE(ASYNC_SCROLLING) && PLATFORM(MAC) 64