Refactoring: Extract StyleSheetCandidate from DocumentStyleSheetCollection

Source/core/dom/StyleSheetCandidate.h

 /*
  * 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.
  *     * 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.
  */
 
-#ifndef AddConsoleMessageTask_h
-#define AddConsoleMessageTask_h
+#ifndef StyleSheetCandidate_h
+#define StyleSheetCandidate_h
 
-#include "core/dom/ExecutionContextTask.h"
-#include "core/frame/ConsoleTypes.h"
-#include "wtf/OwnPtr.h"
-#include "wtf/PassOwnPtr.h"
+#include "wtf/text/AtomicString.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
-class AddConsoleMessageTask : public ExecutionContextTask {
+class Node;
+class StyleSheet;
+
+class StyleSheetCandidate {
 public:
-    static PassOwnPtr<AddConsoleMessageTask> create(MessageSource source, MessageLevel level, const String& message)
-    {
-        return adoptPtr(new AddConsoleMessageTask(source, level, message));
-    }
-    virtual void performTask(ExecutionContext*);
+    enum Type {
+        HTMLLink,
+        HTMLStyle,
+        SVGStyle,
+        Pi
+    };
+
+    StyleSheetCandidate(Node& node)
+        : m_node(node)
+        , m_type(typeOf(node))
+    { }
+
+    bool isXSL() const;
+    bool isAlternate() const;
+    bool isEnabledViaScript() const;
+    bool isEnabledAndLoading() const;
+    bool hasPreferrableName(const String& currentPreferrableName) const;
+    bool canBeActivated(const String& currentPreferrableName) const;
+
+    StyleSheet* sheet() const;
+    AtomicString title() const;
+
 private:
-    AddConsoleMessageTask(MessageSource source, MessageLevel level, const String& message)
-        : m_source(source)
-        , m_level(level)
-        , m_message(message.isolatedCopy())
-    {
-    }
-    MessageSource m_source;
-    MessageLevel m_level;
-    String m_message;
+    bool isElement() const { return m_type != Pi; }
+    bool isHTMLLink() const { return m_type == HTMLLink; }
+
+    static Type typeOf(Node&);
+
+    Node& m_node;
+    Type m_type;
 };
 
-} // namespace
+}
 
 #endif
+