1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
/*
* Copyright (C) 2012 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.
*/
#include "config.h"
#include "ScrollingStateNode.h"
#include "ScrollingStateTree.h"
#if ENABLE(THREADED_SCROLLING)
namespace WebCore {
ScrollingStateNode::ScrollingStateNode(ScrollingStateTree* scrollingStateTree, ScrollingNodeID nodeID)
: m_scrollingStateTree(scrollingStateTree)
, m_nodeID(nodeID)
, m_parent(0)
, m_scrollLayerDidChange(false)
{
}
// This copy constructor is used for cloning nodes in the tree, and it doesn't make sense
// to clone the relationship pointers, so don't copy that information from the original
// node.
ScrollingStateNode::ScrollingStateNode(ScrollingStateNode* stateNode)
: m_scrollingStateTree(0)
, m_nodeID(stateNode->scrollingNodeID())
, m_parent(0)
, m_scrollLayerDidChange(stateNode->scrollLayerDidChange())
{
setScrollLayer(stateNode->platformScrollLayer());
}
ScrollingStateNode::~ScrollingStateNode()
{
}
void ScrollingStateNode::cloneAndResetChildNodes(ScrollingStateNode* clone)
{
if (!m_children)
return;
size_t size = m_children->size();
for (size_t i = 0; i < size; ++i)
clone->appendChild(m_children->at(i)->cloneAndResetNode());
}
void ScrollingStateNode::appendChild(PassOwnPtr<ScrollingStateNode> childNode)
{
childNode->setParent(this);
if (!m_children)
m_children = adoptPtr(new Vector<OwnPtr<ScrollingStateNode> >);
m_children->append(childNode);
}
void ScrollingStateNode::removeChild(ScrollingStateNode* node)
{
if (!m_children)
return;
if (size_t index = m_children->find(node)) {
m_scrollingStateTree->didRemoveNode(node->scrollingNodeID());
m_children->remove(index);
return;
}
size_t size = m_children->size();
for (size_t i = 0; i < size; ++i)
m_children->at(i)->removeChild(node);
}
} // namespace WebCore
#endif // ENABLE(THREADED_SCROLLING)
|
