1/*
2 * Copyright (C) 2011 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 COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27
28#if ENABLE(WEBGL)
29
30#include "WebGLContextGroup.h"
31
32#include "GraphicsContext3D.h"
33#include "WebGLRenderingContext.h"
34#include "WebGLSharedObject.h"
35
36#if PLATFORM(QT)
37#undef emit
38#endif
39
40namespace WebCore {
41
42PassRefPtr<WebGLContextGroup> WebGLContextGroup::create()
43{
44    RefPtr<WebGLContextGroup> contextGroup = adoptRef(new WebGLContextGroup());
45    return contextGroup.release();
46}
47
48WebGLContextGroup::WebGLContextGroup()
49{
50}
51
52WebGLContextGroup::~WebGLContextGroup()
53{
54    detachAndRemoveAllObjects();
55}
56
57GraphicsContext3D* WebGLContextGroup::getAGraphicsContext3D()
58{
59    ASSERT(!m_contexts.isEmpty());
60    HashSet<WebGLRenderingContext*>::iterator it = m_contexts.begin();
61    return (*it)->graphicsContext3D();
62}
63
64void WebGLContextGroup::addContext(WebGLRenderingContext* context)
65{
66    m_contexts.add(context);
67}
68
69void WebGLContextGroup::removeContext(WebGLRenderingContext* context)
70{
71    // We must call detachAndRemoveAllObjects before removing the last context.
72    if (m_contexts.size() == 1 && m_contexts.contains(context))
73        detachAndRemoveAllObjects();
74
75    m_contexts.remove(context);
76}
77
78void WebGLContextGroup::removeObject(WebGLSharedObject* object)
79{
80    m_groupObjects.remove(object);
81}
82
83void WebGLContextGroup::addObject(WebGLSharedObject* object)
84{
85    m_groupObjects.add(object);
86}
87
88void WebGLContextGroup::detachAndRemoveAllObjects()
89{
90    while (!m_groupObjects.isEmpty()) {
91        HashSet<WebGLSharedObject*>::iterator it = m_groupObjects.begin();
92        (*it)->detachContextGroup();
93    }
94}
95
96void WebGLContextGroup::loseContextGroup(WebGLRenderingContext::LostContextMode mode)
97{
98    for (HashSet<WebGLRenderingContext*>::iterator it = m_contexts.begin(); it != m_contexts.end(); ++it)
99        (*it)->loseContextImpl(mode);
100
101    detachAndRemoveAllObjects();
102}
103
104} // namespace WebCore
105
106#endif // ENABLE(WEBGL)
107