Introduce GenericFontFamilySettings.

Source/platform/fonts/GenericFontFamilySettings.cpp

Index: Source/platform/fonts/GenericFontFamilySettings.cpp
diff --git a/Source/platform/fonts/GenericFontFamilySettings.cpp b/Source/platform/fonts/GenericFontFamilySettings.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..57b2c5b7a27af9e69d8ba8e5b029cc1ccbe2a55a
--- /dev/null
+++ b/Source/platform/fonts/GenericFontFamilySettings.cpp
@@ -0,0 +1,142 @@
+/*
+ * Copyright (C) 2013 Google 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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+ * OWNER 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 "platform/fonts/GenericFontFamilySettings.h"
+
+namespace WebCore {
+
+// Sets the entry in the font map for the given script. If family is the empty string, removes the entry instead.
+void GenericFontFamilySettings::setGenericFontFamilyMap(ScriptFontFamilyMap& fontMap, const AtomicString& family, UScriptCode script)
+{
+    ScriptFontFamilyMap::iterator it = fontMap.find(static_cast<int>(script));
+    if (family.isEmpty()) {
+        if (it == fontMap.end())
+            return;
+        fontMap.remove(it);
+    } else if (it != fontMap.end() && it->value == family) {
+        return;
+    } else {
+        fontMap.set(static_cast<int>(script), family);
+    }
+}
+
+const AtomicString& GenericFontFamilySettings::genericFontFamilyForScript(const ScriptFontFamilyMap& fontMap, UScriptCode script) const
+{
+    ScriptFontFamilyMap::const_iterator it = fontMap.find(static_cast<int>(script));
+    if (it != fontMap.end())
+        return it->value;
+    if (script != USCRIPT_COMMON)
+        return genericFontFamilyForScript(fontMap, USCRIPT_COMMON);
+    return emptyAtom;
+}
+
+const AtomicString& GenericFontFamilySettings::standard(UScriptCode script) const
+{
+    return genericFontFamilyForScript(m_standardFontFamilyMap, script);
+}
+
+void GenericFontFamilySettings::setStandard(const AtomicString& family, UScriptCode script)
+{
+    setGenericFontFamilyMap(m_standardFontFamilyMap, family, script);
+}
+
+const AtomicString& GenericFontFamilySettings::fixed(UScriptCode script) const
+{
+    return genericFontFamilyForScript(m_fixedFontFamilyMap, script);
+}
+
+void GenericFontFamilySettings::setFixed(const AtomicString& family, UScriptCode script)
+{
+    setGenericFontFamilyMap(m_fixedFontFamilyMap, family, script);
+}
+
+const AtomicString& GenericFontFamilySettings::serif(UScriptCode script) const
+{
+    return genericFontFamilyForScript(m_serifFontFamilyMap, script);
+}
+
+void GenericFontFamilySettings::setSerif(const AtomicString& family, UScriptCode script)
+{
+    setGenericFontFamilyMap(m_serifFontFamilyMap, family, script);
+}
+
+const AtomicString& GenericFontFamilySettings::sansSerif(UScriptCode script) const
+{
+    return genericFontFamilyForScript(m_sansSerifFontFamilyMap, script);
+}
+
+void GenericFontFamilySettings::setSansSerif(const AtomicString& family, UScriptCode script)
+{
+    setGenericFontFamilyMap(m_sansSerifFontFamilyMap, family, script);
+}
+
+const AtomicString& GenericFontFamilySettings::cursive(UScriptCode script) const
+{
+    return genericFontFamilyForScript(m_cursiveFontFamilyMap, script);
+}
+
+void GenericFontFamilySettings::setCursive(const AtomicString& family, UScriptCode script)
+{
+    setGenericFontFamilyMap(m_cursiveFontFamilyMap, family, script);
+}
+
+const AtomicString& GenericFontFamilySettings::fantasy(UScriptCode script) const
+{
+    return genericFontFamilyForScript(m_fantasyFontFamilyMap, script);
+}
+
+void GenericFontFamilySettings::setFantasy(const AtomicString& family, UScriptCode script)
+{
+    setGenericFontFamilyMap(m_fantasyFontFamilyMap, family, script);
+}
+
+const AtomicString& GenericFontFamilySettings::pictograph(UScriptCode script) const
+{
+    return genericFontFamilyForScript(m_pictographFontFamilyMap, script);
+}
+
+void GenericFontFamilySettings::setPictograph(const AtomicString& family, UScriptCode script)
+{
+    setGenericFontFamilyMap(m_pictographFontFamilyMap, family, script);
+}
+
+void GenericFontFamilySettings::reset()
+{
+    m_standardFontFamilyMap.clear();
+    m_serifFontFamilyMap.clear();
+    m_fixedFontFamilyMap.clear();
+    m_sansSerifFontFamilyMap.clear();
+    m_cursiveFontFamilyMap.clear();
+    m_fantasyFontFamilyMap.clear();
+    m_pictographFontFamilyMap.clear();
+}
+
+}