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
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer
12 *    in the documentation and/or other materials provided with the
13 *    distribution.
14 * 3. Neither the name of Google Inc. nor the names of its contributors
15 *    may be used to endorse or promote products derived from this
16 *    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 CustomElementMicrotaskImportStep_h
32#define CustomElementMicrotaskImportStep_h
33
34#include "core/dom/custom/CustomElementMicrotaskStep.h"
35#include "platform/heap/Handle.h"
36#include "wtf/Noncopyable.h"
37#include "wtf/PassOwnPtr.h"
38#include "wtf/PassRefPtr.h"
39#include "wtf/RefPtr.h"
40#include "wtf/WeakPtr.h"
41
42namespace blink {
43
44class CustomElementSyncMicrotaskQueue;
45class HTMLImportChild;
46
47// Processes the Custom Elements in an HTML Import. This is a
48// composite step which processes the Custom Elements created by
49// parsing the import, and its sub-imports.
50//
51// This step blocks further Custom Element microtask processing if its
52// import isn't "ready" (finished parsing and running script.)
53class CustomElementMicrotaskImportStep : public CustomElementMicrotaskStep {
54    WTF_MAKE_NONCOPYABLE(CustomElementMicrotaskImportStep);
55public:
56    static PassOwnPtrWillBeRawPtr<CustomElementMicrotaskImportStep> create(HTMLImportChild*);
57    virtual ~CustomElementMicrotaskImportStep();
58
59    // API for HTML Imports
60    void invalidate();
61    void importDidFinishLoading();
62#if !ENABLE(OILPAN)
63    WeakPtr<CustomElementMicrotaskImportStep> weakPtr() { return m_weakFactory.createWeakPtr(); }
64#endif
65
66    virtual void trace(Visitor*) OVERRIDE;
67
68private:
69    explicit CustomElementMicrotaskImportStep(HTMLImportChild*);
70
71    void didUpgradeAllCustomElements();
72    bool shouldWaitForImport() const;
73
74    // CustomElementMicrotaskStep
75    virtual Result process() OVERRIDE FINAL;
76
77#if !defined(NDEBUG)
78    virtual void show(unsigned indent) OVERRIDE;
79#endif
80    WeakPtrWillBeWeakMember<HTMLImportChild> m_import;
81#if !ENABLE(OILPAN)
82    WeakPtrFactory<CustomElementMicrotaskImportStep> m_weakFactory;
83#endif
84    RefPtrWillBeMember<CustomElementSyncMicrotaskQueue> m_queue;
85};
86
87}
88
89#endif // CustomElementMicrotaskImportStep_h
90