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
44namespace blink {
45
46class FetchRequest;
47class ExecutionContext;
48class ResourceFetcher;
49class HTMLImportChild;
50class HTMLImportChildClient;
51class HTMLImportLoader;
52class HTMLImportTreeRoot;
53
54class HTMLImportsController FINAL : public NoBaseWillBeGarbageCollectedFinalized<HTMLImportsController>, public DocumentSupplement {
55    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(HTMLImportsController);
56    WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
57public:
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
81private:
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 blink
90
91#endif // HTMLImportsController_h
92