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LibWeb: Implement Range.collapse

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This commit is contained in:
Luke Wilde 2022-01-31 18:42:36 +00:00 • committed by Andreas Kling
parent dfdc2ddb9e
commit 2b2dbdc74f
3 changed files with 16 additions and 0 deletions
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14
Userland/Libraries/LibWeb/DOM/Range.cpp
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@ -345,6 +345,20 @@ ExceptionOr<void> Range::select_node(Node& node)
return select(node);
}
// https://dom.spec.whatwg.org/#dom-range-collapse
void Range::collapse(bool to_start)
{
// The collapse(toStart) method steps are to, if toStart is true, set end to start; otherwise set start to end.
if (to_start) {
m_end_container = m_start_container;
m_end_offset = m_start_offset;
return;
}
m_start_container = m_end_container;
m_start_offset = m_end_offset;
}
NonnullRefPtr<Range> Range::clone_range() const
{
return adopt_ref(*new Range(const_cast<Node&>(*m_start_container), m_start_offset, const_cast<Node&>(*m_end_container), m_end_offset));