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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
      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 #include "config.h"
     32 #include "core/dom/custom/CustomElementMicrotaskImportStep.h"
     33 
     34 #include "core/dom/custom/CustomElementMicrotaskDispatcher.h"
     35 #include "core/dom/custom/CustomElementSyncMicrotaskQueue.h"
     36 #include "core/html/imports/HTMLImportChild.h"
     37 #include "core/html/imports/HTMLImportLoader.h"
     38 #include <stdio.h>
     39 
     40 namespace WebCore {
     41 
     42 PassOwnPtrWillBeRawPtr<CustomElementMicrotaskImportStep> CustomElementMicrotaskImportStep::create(HTMLImportChild* import)
     43 {
     44     return adoptPtrWillBeNoop(new CustomElementMicrotaskImportStep(import));
     45 }
     46 
     47 CustomElementMicrotaskImportStep::CustomElementMicrotaskImportStep(HTMLImportChild* import)
     48 #if ENABLE(OILPAN)
     49     : m_import(import)
     50 #else
     51     : m_import(import->weakPtr())
     52     , m_weakFactory(this)
     53 #endif
     54     , m_queue(import->loader()->microtaskQueue())
     55 {
     56 }
     57 
     58 CustomElementMicrotaskImportStep::~CustomElementMicrotaskImportStep()
     59 {
     60 }
     61 
     62 void CustomElementMicrotaskImportStep::parentWasChanged()
     63 {
     64     m_queue = CustomElementSyncMicrotaskQueue::create();
     65     m_import.clear();
     66 }
     67 
     68 bool CustomElementMicrotaskImportStep::shouldWaitForImport() const
     69 {
     70     return m_import && !m_import->loader()->isDone();
     71 }
     72 
     73 void CustomElementMicrotaskImportStep::didUpgradeAllCustomElements()
     74 {
     75     ASSERT(m_queue);
     76     if (m_import)
     77         m_import->didFinishUpgradingCustomElements();
     78 }
     79 
     80 CustomElementMicrotaskStep::Result CustomElementMicrotaskImportStep::process()
     81 {
     82     m_queue->dispatch();
     83     if (!m_queue->isEmpty() || shouldWaitForImport())
     84         return Processing;
     85 
     86     didUpgradeAllCustomElements();
     87     return FinishedProcessing;
     88 }
     89 
     90 void CustomElementMicrotaskImportStep::trace(Visitor* visitor)
     91 {
     92     visitor->trace(m_import);
     93     visitor->trace(m_queue);
     94     CustomElementMicrotaskStep::trace(visitor);
     95 }
     96 
     97 #if !defined(NDEBUG)
     98 void CustomElementMicrotaskImportStep::show(unsigned indent)
     99 {
    100     fprintf(stderr, "%*sImport(wait=%d sync=%d, url=%s)\n", indent, "", shouldWaitForImport(), m_import && m_import->isSync(), m_import ? m_import->url().string().utf8().data() : "null");
    101     m_queue->show(indent + 1);
    102 }
    103 #endif
    104 
    105 } // namespace WebCore
    106