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LibHTML: Add Node::{next,previous}_element_sibling()

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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.
This commit is contained in:
Andreas Kling
2019-10-06 19:54:50 +02:00
parent cad326f323
commit 5a6c36dc91
2 changed files with 22 additions and 0 deletions
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18
Libraries/LibHTML/DOM/Node.cpp
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@@ -83,3 +83,21 @@ String Node::text_content() const
builder.trim(1);
return builder.to_string();
}
const Element* Node::next_element_sibling() const
{
for (auto* node = next_sibling(); node; node = node->next_sibling()) {
if (node->is_element())
return static_cast<const Element*>(node);
}
return nullptr;
}
const Element* Node::previous_element_sibling() const
{
for (auto* node = previous_sibling(); node; node = node->previous_sibling()) {
if (node->is_element())
return static_cast<const Element*>(node);
}
return nullptr;
}