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LibWeb: Make DOM Nodes keep their Document alive

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In addition to being reference-counted, all nodes that are part of a
document must also keep the document alive.

This is achieved by adding a second ref-count to the Document object
and incrementing/decrementing it whenever a node is created/destroyed
in that document.

This brings us much closer to a proper DOM lifetime model, although
the JS bindings still need more work.
This commit is contained in:
Andreas Kling 2020-10-11 21:52:59 +02:00
parent 99acbbe86b
commit f68ed6d25b
5 changed files with 45 additions and 11 deletions
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2
Libraries/LibWeb/DOM/Node.h
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@ -65,6 +65,8 @@ public:
virtual ~Node();
void removed_last_ref();
NodeType type() const { return m_type; }
bool is_element() const { return type() == NodeType::ELEMENT_NODE; }
bool is_text() const { return type() == NodeType::TEXT_NODE; }