4 * Copyright (C) 2005, 2006 Kimmo Kinnunen <kimmo.t.kinnunen@nokia.com>.
5 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
20 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
21 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
24 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 #include "MediaQuery.h"
32 #include "MediaQueryExp.h"
33 #include "StringBuilder.h"
39 // http://dev.w3.org/csswg/cssom/#serialize-a-media-query
40 String MediaQuery::serialize() const
44 switch (m_restrictor) {
45 case MediaQuery::Only:
46 result.append("only ");
49 result.append("not ");
51 case MediaQuery::None:
55 if (m_expressions->isEmpty()) {
56 result.append(m_mediaType);
57 return result.toString();
60 if (m_mediaType != "all" || m_restrictor != None) {
61 result.append(m_mediaType);
62 result.append(" and ");
65 result.append(m_expressions->at(0)->serialize());
66 for (size_t i = 1; i < m_expressions->size(); ++i) {
67 result.append(" and ");
68 result.append(m_expressions->at(i)->serialize());
70 return result.toString();
73 static bool expressionCompare(const MediaQueryExp* a, const MediaQueryExp* b)
75 return codePointCompare(a->serialize(), b->serialize()) < 0;
78 MediaQuery::MediaQuery(Restrictor r, const String& mediaType, PassOwnPtr<Vector<MediaQueryExp*> > exprs)
80 , m_mediaType(mediaType.lower())
81 , m_expressions(exprs)
85 m_expressions = new Vector<MediaQueryExp*>;
89 std::sort(m_expressions->begin(), m_expressions->end(), expressionCompare);
91 // remove all duplicated expressions
93 for (int i = m_expressions->size() - 1; i >= 0; --i) {
95 // if not all of the expressions is valid the media query must be ignored.
97 m_ignored = !m_expressions->at(i)->isValid();
99 if (m_expressions->at(i)->serialize() == key) {
100 MediaQueryExp* item = m_expressions->at(i);
101 m_expressions->remove(i);
104 key = m_expressions->at(i)->serialize();
108 MediaQuery::~MediaQuery()
110 deleteAllValues(*m_expressions);
113 // http://dev.w3.org/csswg/cssom/#compare-media-queries
114 bool MediaQuery::operator==(const MediaQuery& other) const
116 return cssText() == other.cssText();
119 // http://dev.w3.org/csswg/cssom/#serialize-a-list-of-media-queries
120 String MediaQuery::cssText() const
122 if (m_serializationCache.isNull())
123 const_cast<MediaQuery*>(this)->m_serializationCache = serialize();
125 return m_serializationCache;