1/*
2 * Copyright (C) 2012 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 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 *     its contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include "config.h"
30#include "core/accessibility/AXSVGRoot.h"
31
32
33namespace blink {
34
35AXSVGRoot::AXSVGRoot(RenderObject* renderer)
36    : AXRenderObject(renderer)
37    , m_parent(0)
38{
39}
40
41AXSVGRoot::~AXSVGRoot()
42{
43}
44
45PassRefPtr<AXSVGRoot> AXSVGRoot::create(RenderObject* renderer)
46{
47    return adoptRef(new AXSVGRoot(renderer));
48}
49
50void AXSVGRoot::setParent(AXObject* parent)
51{
52    // Only update the parent to another objcet if it wasn't already set to
53    // something. Multiple elements in an HTML document can reference
54    // the same remote SVG document, and in that case the parent should just
55    // stay with the first one.
56    if (!m_parent || !parent)
57        m_parent = parent;
58}
59
60AXObject* AXSVGRoot::parentObject() const
61{
62    // If a parent was set because this is a remote SVG resource, use that
63    // but otherwise, we should rely on the standard render tree for the parent.
64    if (m_parent)
65        return m_parent;
66
67    return AXRenderObject::parentObject();
68}
69
70
71} // namespace blink
72