Defer iframe JavaScript URL evaluation

Source/core/html/HTMLFrameJavaScriptURLOpener.h

 /*
- * Copyright (C) 2008 Apple Inc. All Rights Reserved.
+ * Copyright (C) 2014 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:
  * 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 APPLE INC. ``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 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.
  */
 
-#ifndef FileList_h
-#define FileList_h
+#ifndef HTMLFrameJavaScriptURLOpener_h
+#define HTMLFrameJavaScriptURLOpener_h
 
-#include "bindings/v8/ScriptWrappable.h"
-#include "core/fileapi/File.h"
-#include "heap/Handle.h"
-#include "wtf/PassRefPtr.h"
+#include "platform/weborigin/KURL.h"
 #include "wtf/RefCounted.h"
 #include "wtf/RefPtr.h"
 #include "wtf/Vector.h"
 
 namespace WebCore {
 
-class FileList : public RefCountedWillBeGarbageCollectedFinalized<FileList>, public ScriptWrappable {
+class Document;
+class HTMLFrameElementBase;
+
+// FIXME: Some day, this could be implemented as a C++ level
+// equivalent of custom element enterView callback.
+// We don't have that yet, so uses timer for a while.
+class HTMLFrameJavaScriptURLOpener {
+    WTF_MAKE_NONCOPYABLE(HTMLFrameJavaScriptURLOpener); WTF_MAKE_FAST_ALLOCATED;
 public:
-    static PassRefPtrWillBeRawPtr<FileList> create()
-    {
-        return adoptRefWillBeNoop(new FileList);
-    }
+    ~HTMLFrameJavaScriptURLOpener();
 
-    unsigned length() const { return m_files.size(); }
-    File* item(unsigned index) const;
+    void request(PassRefPtr<HTMLFrameElementBase>);
+    void processPendingRequests();
 
-    bool isEmpty() const { return m_files.isEmpty(); }
-    void clear() { m_files.clear(); }
-    void append(PassRefPtrWillBeRawPtr<File> file) { m_files.append(file); }
-    Vector<String> paths() const;
-
-    void trace(Visitor*);
+    static HTMLFrameJavaScriptURLOpener& instance();
 
 private:
-    FileList();
+    static void microtaskCallback();
 
-    WillBeHeapVector<RefPtrWillBeMember<File> > m_files;
+    HTMLFrameJavaScriptURLOpener();
+
+    class Request : public RefCounted<Request> {
+        WTF_MAKE_NONCOPYABLE(Request); WTF_MAKE_FAST_ALLOCATED;
+    public:
+        explicit Request(PassRefPtr<HTMLFrameElementBase>);
+        ~Request();
+
+        void setNameAndOpenURL();
+
+    private:
+        RefPtr<HTMLFrameElementBase> m_element;
+        RefPtr<Document> m_document;
+        AtomicString m_lastURL;
+    };
+
+    Vector<RefPtr<Request> > m_requests;
+    bool m_enqueued;
 };
 
-} // namespace WebCore
+}
 
-#endif // FileList_h
+#endif