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      1 /*
      2  * Copyright (C) 2013 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef HTMLImportsController_h
     32 #define HTMLImportsController_h
     33 
     34 #include "core/dom/DocumentSupplementable.h"
     35 #include "core/fetch/RawResource.h"
     36 #include "core/html/LinkResource.h"
     37 #include "core/html/imports/HTMLImport.h"
     38 #include "platform/Supplementable.h"
     39 #include "platform/Timer.h"
     40 #include "wtf/FastAllocBase.h"
     41 #include "wtf/PassOwnPtr.h"
     42 #include "wtf/Vector.h"
     43 
     44 namespace WebCore {
     45 
     46 class FetchRequest;
     47 class ExecutionContext;
     48 class ResourceFetcher;
     49 class HTMLImportChild;
     50 class HTMLImportChildClient;
     51 class HTMLImportLoader;
     52 class HTMLImportTreeRoot;
     53 
     54 class HTMLImportsController FINAL : public NoBaseWillBeGarbageCollectedFinalized<HTMLImportsController>, public DocumentSupplement {
     55     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(HTMLImportsController);
     56     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
     57 public:
     58     static const char* supplementName();
     59     static void provideTo(Document&);
     60     static void removeFrom(Document&);
     61 
     62     explicit HTMLImportsController(Document&);
     63     virtual ~HTMLImportsController();
     64 
     65     HTMLImportTreeRoot* root() const { return m_root.get(); }
     66 
     67     bool shouldBlockScriptExecution(const Document&) const;
     68     HTMLImportChild* load(HTMLImport* parent, HTMLImportChildClient*, FetchRequest);
     69 
     70     Document* master() const;
     71 
     72     HTMLImportLoader* createLoader();
     73 
     74     size_t loaderCount() const { return m_loaders.size(); }
     75     HTMLImportLoader* loaderAt(size_t i) const { return m_loaders[i].get(); }
     76     Document* loaderDocumentAt(size_t) const;
     77     HTMLImportLoader* loaderFor(const Document&) const;
     78 
     79     virtual void trace(Visitor*);
     80 
     81 private:
     82     HTMLImportChild* createChild(const KURL&, HTMLImportLoader*, HTMLImport* parent, HTMLImportChildClient*);
     83 
     84     OwnPtrWillBeMember<HTMLImportTreeRoot> m_root;
     85     typedef WillBeHeapVector<OwnPtrWillBeMember<HTMLImportLoader> > LoaderList;
     86     LoaderList m_loaders;
     87 };
     88 
     89 } // namespace WebCore
     90 
     91 #endif // HTMLImportsController_h
     92