5a6c36dc91
These helpers return the next/previous sibling Node that's actually an element. This will be useful in the CSS engine since CSS doesn't care about text nodes.
76 lines
2.2 KiB
C++
76 lines
2.2 KiB
C++
#pragma once
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#include <AK/Badge.h>
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#include <AK/RefPtr.h>
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#include <AK/String.h>
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#include <AK/Vector.h>
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#include <LibHTML/TreeNode.h>
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enum class NodeType : unsigned {
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INVALID = 0,
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ELEMENT_NODE = 1,
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TEXT_NODE = 3,
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DOCUMENT_NODE = 9,
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};
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class Document;
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class Element;
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class HTMLElement;
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class HTMLAnchorElement;
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class ParentNode;
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class LayoutNode;
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class StyleResolver;
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class StyleProperties;
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class Node : public TreeNode<Node> {
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public:
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virtual ~Node();
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NodeType type() const { return m_type; }
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bool is_element() const { return type() == NodeType::ELEMENT_NODE; }
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bool is_text() const { return type() == NodeType::TEXT_NODE; }
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bool is_document() const { return type() == NodeType::DOCUMENT_NODE; }
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bool is_parent_node() const { return is_element() || is_document(); }
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virtual RefPtr<LayoutNode> create_layout_node(const StyleResolver&, const StyleProperties* parent_properties) const = 0;
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RefPtr<LayoutNode> create_layout_tree(const StyleResolver&, const StyleProperties* parent_properties) const;
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virtual String tag_name() const = 0;
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virtual String text_content() const;
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Document& document() { return m_document; }
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const Document& document() const { return m_document; }
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const HTMLAnchorElement* enclosing_link_element() const;
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const HTMLElement* enclosing_html_element() const;
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virtual bool is_html_element() const { return false; }
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const Node* first_child_with_tag_name(const StringView& tag_name) const
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{
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for (auto* child = first_child(); child; child = child->next_sibling()) {
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if (child->tag_name() == tag_name)
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return child;
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}
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return nullptr;
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}
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virtual void inserted_into(Node&) {}
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virtual void removed_from(Node&) {}
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const LayoutNode* layout_node() const { return m_layout_node; }
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LayoutNode* layout_node() { return m_layout_node; }
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void set_layout_node(Badge<LayoutNode>, LayoutNode* layout_node) const { m_layout_node = layout_node; }
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const Element* previous_element_sibling() const;
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const Element* next_element_sibling() const;
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protected:
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Node(Document&, NodeType);
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Document& m_document;
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mutable LayoutNode* m_layout_node { nullptr };
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NodeType m_type { NodeType::INVALID };
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};
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