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LibWeb: Implement Range.set{Start,End}{Before,After}

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Luke Wilde 2022-01-31 17:35:03 +00:00 • committed by Andreas Kling
parent 46ce50f74e
commit d73fb7e10f
3 changed files with 64 additions and 0 deletions
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56
Userland/Libraries/LibWeb/DOM/Range.cpp
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@ -171,6 +171,62 @@ ExceptionOr<void> Range::set_end(Node& node, u32 offset)
return set_start_or_end(node, offset, StartOrEnd::End);
}
// https://dom.spec.whatwg.org/#dom-range-setstartbefore
ExceptionOr<void> Range::set_start_before(Node& node)
{
// 1. Let parent be node’s parent.
auto* parent = node.parent();
// 2. If parent is null, then throw an "InvalidNodeTypeError" DOMException.
if (!parent)
return InvalidNodeTypeError::create("Given node has no parent.");
// 3. Set the start of this to boundary point (parent, node’s index).
return set_start_or_end(*parent, node.index(), StartOrEnd::Start);
}
// https://dom.spec.whatwg.org/#dom-range-setstartafter
ExceptionOr<void> Range::set_start_after(Node& node)
{
// 1. Let parent be node’s parent.
auto* parent = node.parent();
// 2. If parent is null, then throw an "InvalidNodeTypeError" DOMException.
if (!parent)
return InvalidNodeTypeError::create("Given node has no parent.");
// 3. Set the start of this to boundary point (parent, node’s index plus 1).
return set_start_or_end(*parent, node.index() + 1, StartOrEnd::Start);
}
// https://dom.spec.whatwg.org/#dom-range-setendbefore
ExceptionOr<void> Range::set_end_before(Node& node)
{
// 1. Let parent be node’s parent.
auto* parent = node.parent();
// 2. If parent is null, then throw an "InvalidNodeTypeError" DOMException.
if (!parent)
return InvalidNodeTypeError::create("Given node has no parent.");
// 3. Set the end of this to boundary point (parent, node’s index).
return set_start_or_end(*parent, node.index(), StartOrEnd::End);
}
// https://dom.spec.whatwg.org/#dom-range-setendafter
ExceptionOr<void> Range::set_end_after(Node& node)
{
// 1. Let parent be node’s parent.
auto* parent = node.parent();
// 2. If parent is null, then throw an "InvalidNodeTypeError" DOMException.
if (!parent)
return InvalidNodeTypeError::create("Given node has no parent.");
// 3. Set the end of this to boundary point (parent, node’s index plus 1).
return set_start_or_end(*parent, node.index() + 1, StartOrEnd::End);
}
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));