sky/engine/core/dom/custom/CustomElementMicrotaskImportStep.h

/*
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 * modification, are permitted provided that the following conditions
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 *    in the documentation and/or other materials provided with the
 *    distribution.
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 *    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
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#ifndef SKY_ENGINE_CORE_DOM_CUSTOM_CUSTOMELEMENTMICROTASKIMPORTSTEP_H_
#define SKY_ENGINE_CORE_DOM_CUSTOM_CUSTOMELEMENTMICROTASKIMPORTSTEP_H_

#include "sky/engine/core/dom/custom/CustomElementMicrotaskStep.h"
#include "sky/engine/platform/heap/Handle.h"
#include "sky/engine/wtf/Noncopyable.h"
#include "sky/engine/wtf/PassOwnPtr.h"
#include "sky/engine/wtf/PassRefPtr.h"
#include "sky/engine/wtf/RefPtr.h"
#include "sky/engine/wtf/WeakPtr.h"

namespace blink {

class CustomElementSyncMicrotaskQueue;
class HTMLImportChild;

// Processes the Custom Elements in an HTML Import. This is a
// composite step which processes the Custom Elements created by
// parsing the import, and its sub-imports.
//
// This step blocks further Custom Element microtask processing if its
// import isn't "ready" (finished parsing and running script.)
class CustomElementMicrotaskImportStep : public CustomElementMicrotaskStep {
    WTF_MAKE_NONCOPYABLE(CustomElementMicrotaskImportStep);
public:
    static PassOwnPtr<CustomElementMicrotaskImportStep> create(HTMLImportChild*);
    virtual ~CustomElementMicrotaskImportStep();

    // API for HTML Imports
    void invalidate();
    void importDidFinishLoading();
#if !ENABLE(OILPAN)
    WeakPtr<CustomElementMicrotaskImportStep> weakPtr() { return m_weakFactory.createWeakPtr(); }
#endif

private:
    explicit CustomElementMicrotaskImportStep(HTMLImportChild*);

    void didUpgradeAllCustomElements();
    bool shouldWaitForImport() const;

    // CustomElementMicrotaskStep
    virtual Result process() override final;

    WeakPtr<HTMLImportChild> m_import;
#if !ENABLE(OILPAN)
    WeakPtrFactory<CustomElementMicrotaskImportStep> m_weakFactory;
#endif
    RefPtr<CustomElementSyncMicrotaskQueue> m_queue;
};

}

#endif  // SKY_ENGINE_CORE_DOM_CUSTOM_CUSTOMELEMENTMICROTASKIMPORTSTEP_H_