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28 #include "core/frame/DOMWindowProperty.h"
30 #include "core/frame/LocalDOMWindow.h"
31 #include "core/frame/LocalFrame.h"
35 DOMWindowProperty::DOMWindowProperty(LocalFrame* frame)
38 , m_associatedDOMWindow(nullptr)
41 // FIXME: For now it *is* acceptable for a DOMWindowProperty to be created with a null frame.
42 // See fast/dom/navigator-detached-no-crash.html for the recipe.
43 // We should fix that. <rdar://problem/11567132>
46 m_frame->domWindow()->registerProperty(this);
48 m_associatedDOMWindow = m_frame->domWindow();
49 m_associatedDOMWindow->registerProperty(this);
55 DOMWindowProperty::~DOMWindowProperty()
57 if (m_associatedDOMWindow)
58 m_associatedDOMWindow->unregisterProperty(this);
62 void DOMWindowProperty::willDestroyGlobalObjectInFrame()
64 // If the property is getting this callback it must have been
65 // created with a LocalFrame and it should still have it.
70 // LocalDOMWindow will along with notifying DOMWindowProperty objects of
71 // impending destruction, unilaterally clear out its registered set.
72 // Consequently, no explicit unregisteration required by DOMWindowProperty;
73 // here or when destructed.
74 ASSERT(m_associatedDOMWindow);
75 m_associatedDOMWindow = nullptr;
79 void DOMWindowProperty::willDetachGlobalObjectFromFrame()
81 // If the property is getting this callback it must have been
82 // created with a LocalFrame and it should still have it.
85 // Ditto for its associated LocalDOMWindow.
86 ASSERT(m_associatedDOMWindow);
90 void DOMWindowProperty::trace(Visitor* visitor)
92 visitor->trace(m_frame);