Merge from Chromium at DEPS revision r198571
This commit was generated by merge_to_master.py.
Change-Id: I3a7f89ea6b8c017335bd52739166aed708cad1e5
diff --git a/Source/core/css/MediaQuery.cpp b/Source/core/css/MediaQuery.cpp
new file mode 100644
index 0000000..1a2ffc0
--- /dev/null
+++ b/Source/core/css/MediaQuery.cpp
@@ -0,0 +1,150 @@
+/*
+ * CSS Media Query
+ *
+ * Copyright (C) 2005, 2006 Kimmo Kinnunen <kimmo.t.kinnunen@nokia.com>.
+ * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+ *
+ * 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 THE AUTHOR ``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 COMPUTER, INC. OR
+ * 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 "core/css/MediaQuery.h"
+
+#include "core/css/MediaQueryExp.h"
+#include "core/dom/WebCoreMemoryInstrumentation.h"
+#include <wtf/MemoryInstrumentationVector.h>
+#include <wtf/NonCopyingSort.h>
+#include <wtf/text/StringBuilder.h>
+
+namespace WebCore {
+
+// http://dev.w3.org/csswg/cssom/#serialize-a-media-query
+String MediaQuery::serialize() const
+{
+ StringBuilder result;
+ if (!m_ignored) {
+ switch (m_restrictor) {
+ case MediaQuery::Only:
+ result.append("only ");
+ break;
+ case MediaQuery::Not:
+ result.append("not ");
+ break;
+ case MediaQuery::None:
+ break;
+ }
+
+ if (m_expressions->isEmpty()) {
+ result.append(m_mediaType);
+ return result.toString();
+ }
+
+ if (m_mediaType != "all" || m_restrictor != None) {
+ result.append(m_mediaType);
+ result.append(" and ");
+ }
+
+ result.append(m_expressions->at(0)->serialize());
+ for (size_t i = 1; i < m_expressions->size(); ++i) {
+ result.append(" and ");
+ result.append(m_expressions->at(i)->serialize());
+ }
+ } else {
+ // If query is invalid, serialized text should turn into "not all".
+ result.append("not all");
+ }
+ return result.toString();
+}
+
+static bool expressionCompare(const OwnPtr<MediaQueryExp>& a, const OwnPtr<MediaQueryExp>& b)
+{
+ return codePointCompare(a->serialize(), b->serialize()) < 0;
+}
+
+
+MediaQuery::MediaQuery(Restrictor r, const String& mediaType, PassOwnPtr<Vector<OwnPtr<MediaQueryExp> > > exprs)
+ : m_restrictor(r)
+ , m_mediaType(mediaType.lower())
+ , m_expressions(exprs)
+ , m_ignored(false)
+{
+ if (!m_expressions) {
+ m_expressions = adoptPtr(new Vector<OwnPtr<MediaQueryExp> >);
+ return;
+ }
+
+ nonCopyingSort(m_expressions->begin(), m_expressions->end(), expressionCompare);
+
+ // remove all duplicated expressions
+ String key;
+ for (int i = m_expressions->size() - 1; i >= 0; --i) {
+
+ // if not all of the expressions is valid the media query must be ignored.
+ if (!m_ignored)
+ m_ignored = !m_expressions->at(i)->isValid();
+
+ if (m_expressions->at(i)->serialize() == key)
+ m_expressions->remove(i);
+ else
+ key = m_expressions->at(i)->serialize();
+ }
+}
+
+MediaQuery::MediaQuery(const MediaQuery& o)
+ : m_restrictor(o.m_restrictor)
+ , m_mediaType(o.m_mediaType)
+ , m_expressions(adoptPtr(new Vector<OwnPtr<MediaQueryExp> >(o.m_expressions->size())))
+ , m_ignored(o.m_ignored)
+ , m_serializationCache(o.m_serializationCache)
+{
+ for (unsigned i = 0; i < m_expressions->size(); ++i)
+ (*m_expressions)[i] = o.m_expressions->at(i)->copy();
+}
+
+MediaQuery::~MediaQuery()
+{
+}
+
+// http://dev.w3.org/csswg/cssom/#compare-media-queries
+bool MediaQuery::operator==(const MediaQuery& other) const
+{
+ return cssText() == other.cssText();
+}
+
+// http://dev.w3.org/csswg/cssom/#serialize-a-list-of-media-queries
+String MediaQuery::cssText() const
+{
+ if (m_serializationCache.isNull())
+ const_cast<MediaQuery*>(this)->m_serializationCache = serialize();
+
+ return m_serializationCache;
+}
+
+void MediaQuery::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
+{
+ MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::CSS);
+ info.addMember(m_mediaType, "mediaType");
+ info.addMember(m_expressions, "expressions");
+ info.addMember(m_serializationCache, "serializationCache");
+}
+
+} //namespace