src/third_party/WebKit/Source/core/html/imports/HTMLImportTreeRoot.cpp

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "config.h"
   6 #include "core/html/imports/HTMLImportTreeRoot.h"
   7
   8 #include "core/dom/Document.h"
   9 #include "core/dom/StyleEngine.h"
  10 #include "core/frame/LocalFrame.h"
  11 #include "core/html/imports/HTMLImportChild.h"
  12
  13 namespace blink {
  14
  15 PassOwnPtrWillBeRawPtr<HTMLImportTreeRoot> HTMLImportTreeRoot::create(Document* document)
  16 {
  17     return adoptPtrWillBeNoop(new HTMLImportTreeRoot(document));
  18 }
  19
  20 HTMLImportTreeRoot::HTMLImportTreeRoot(Document* document)
  21     : HTMLImport(HTMLImport::Sync)
  22     , m_document(document)
  23     , m_recalcTimer(this, &HTMLImportTreeRoot::recalcTimerFired)
  24 {
  25     scheduleRecalcState(); // This recomputes initial state.
  26 }
  27
  28 HTMLImportTreeRoot::~HTMLImportTreeRoot()
  29 {
  30 #if !ENABLE(OILPAN)
  31     for (size_t i = 0; i < m_imports.size(); ++i)
  32         m_imports[i]->importDestroyed();
  33     m_imports.clear();
  34     m_document = nullptr;
  35 #endif
  36 }
  37
  38 Document* HTMLImportTreeRoot::document() const
  39 {
  40     return m_document;
  41 }
  42
  43 bool HTMLImportTreeRoot::isDone() const
  44 {
  45     return !m_document->parsing() && m_document->styleEngine()->haveStylesheetsLoaded();
  46 }
  47
  48 void HTMLImportTreeRoot::stateWillChange()
  49 {
  50     scheduleRecalcState();
  51 }
  52
  53 void HTMLImportTreeRoot::stateDidChange()
  54 {
  55     HTMLImport::stateDidChange();
  56
  57     if (!state().isReady())
  58         return;
  59     if (LocalFrame* frame = m_document->frame())
  60         frame->loader().checkCompleted();
  61 }
  62
  63 void HTMLImportTreeRoot::scheduleRecalcState()
  64 {
  65 #if ENABLE(OILPAN)
  66     ASSERT(m_document);
  67     if (m_recalcTimer.isActive() || !m_document->isActive())
  68         return;
  69 #else
  70     if (m_recalcTimer.isActive() || !m_document)
  71         return;
  72 #endif
  73     m_recalcTimer.startOneShot(0, FROM_HERE);
  74 }
  75
  76 HTMLImportChild* HTMLImportTreeRoot::add(PassOwnPtrWillBeRawPtr<HTMLImportChild> child)
  77 {
  78     m_imports.append(child);
  79     return m_imports.last().get();
  80 }
  81
  82 HTMLImportChild* HTMLImportTreeRoot::find(const KURL& url) const
  83 {
  84     for (size_t i = 0; i < m_imports.size(); ++i) {
  85         HTMLImportChild* candidate = m_imports[i].get();
  86         if (equalIgnoringFragmentIdentifier(candidate->url(), url))
  87             return candidate;
  88     }
  89
  90     return 0;
  91 }
  92
  93 void HTMLImportTreeRoot::recalcTimerFired(Timer<HTMLImportTreeRoot>*)
  94 {
  95     ASSERT(m_document);
  96
  97     do {
  98         m_recalcTimer.stop();
  99         HTMLImport::recalcTreeState(this);
 100     } while (m_recalcTimer.isActive());
 101 }
 102
 103 void HTMLImportTreeRoot::trace(Visitor* visitor)
 104 {
 105     visitor->trace(m_document);
 106     visitor->trace(m_imports);
 107     HTMLImport::trace(visitor);
 108 }
 109
 110 }