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LibHTML: Add Comment and CharacterData nodes and improve HTML parsing

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This patch adds the CharacterData subclass of Node, which is now the
parent class of Text and a new Comment class.

A Comment node is one of these in HTML: <!--hello friends-->
Since these occur somewhat frequently on the web, we need to be able
to parse them.

This patch also adds a child rejection mechanism to the DOM tree.
Nodes can now override is_child_allowed(Node) and return false if they
don't want a particular Node to become a child of theirs. This is used
to prevent Document from taking on unwanted children.
This commit is contained in:
Andreas Kling 2019-10-12 23:26:47 +02:00
parent 6d150df58a
commit b083a233d8
15 changed files with 158 additions and 25 deletions
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2
Libraries/LibHTML/DOM/Document.h
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@ -67,6 +67,8 @@ public:
void invalidate_layout();
Function<void()> on_invalidate_layout;
virtual bool is_child_allowed(const Node&) const override;
private:
virtual RefPtr<LayoutNode> create_layout_node(const StyleResolver&, const StyleProperties* parent_style) const override;