1 files changed, 79 insertions, 0 deletions
diff --git a/Source/WebCore/rendering/style/ContentData.cpp b/Source/WebCore/rendering/style/ContentData.cpp
new file mode 100644
index 0000000..d150f77
--- /dev/null
+++ b/Source/WebCore/rendering/style/ContentData.cpp
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
+ * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "config.h"
+#include "ContentData.h"
+
+#include "StyleImage.h"
+#include <wtf/text/StringImpl.h>
+
+namespace WebCore {
+
+void ContentData::clear()
+{
+    deleteContent();
+
+    // Delete the singly-linked list without recursing.
+    for (OwnPtr<ContentData> next = m_next.release(); next; next = next->m_next.release()) { }
+}
+
+// FIXME: Why isn't this just operator==?
+// FIXME: This is not a good name for a boolean-returning function.
+bool ContentData::dataEquivalent(const ContentData& other) const
+{
+    if (type() != other.type())
+        return false;
+
+    switch (type()) {
+    case CONTENT_NONE:
+        return true;
+    case CONTENT_TEXT:
+        return equal(text(), other.text());
+    case CONTENT_OBJECT:
+        return StyleImage::imagesEquivalent(image(), other.image());
+    case CONTENT_COUNTER:
+        return *counter() == *other.counter();
+    }
+
+    ASSERT_NOT_REACHED();
+    return false;
+}
+
+void ContentData::deleteContent()
+{
+    switch (m_type) {
+    case CONTENT_NONE:
+        break;
+    case CONTENT_OBJECT:
+        m_content.m_image->deref();
+        break;
+    case CONTENT_TEXT:
+        m_content.m_text->deref();
+        break;
+    case CONTENT_COUNTER:
+        delete m_content.m_counter;
+        break;
+    }
+
+    m_type = CONTENT_NONE;
+}
+
+} // namespace WebCore