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LibWeb: Implement Selection.collapse

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This commit is contained in:
Rafał Babiarz 2022-12-09 21:57:10 +01:00 • committed by Andreas Kling
parent 4cdfe684b8
commit 6d46ebfe8a
2 changed files with 30 additions and 7 deletions
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33
Userland/Libraries/LibWeb/Selection/Selection.cpp
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@ -162,17 +162,40 @@ void Selection::empty()
}
// https://w3c.github.io/selection-api/#dom-selection-collapse
void Selection::collapse(JS::GCPtr<DOM::Node>, unsigned offset)
WebIDL::ExceptionOr<void> Selection::collapse(JS::GCPtr<DOM::Node> node, unsigned offset)
{
(void)offset;
TODO();
// 1. If node is null, this method must behave identically as removeAllRanges() and abort these steps.
if (!node) {
remove_all_ranges();
return {};
}
// 2. The method must throw an IndexSizeError exception if offset is longer than node's length and abort these steps.
if (offset > node->length()) {
return WebIDL::IndexSizeError::create(realm(), "Selection.collapse() with offset longer than node's length"sv);
}
// 3. If node's root is not the document associated with this, abort these steps.
if (&node->root() != m_document.ptr())
return {};
// 4. Otherwise, let newRange be a new range.
auto new_range = DOM::Range::create(*m_document);
// 5. Set the start the start and the end of newRange to (node, offset).
TRY(new_range->set_start(*node, offset));
// 6. Set this's range to newRange.
m_range = new_range;
return {};
}
// https://w3c.github.io/selection-api/#dom-selection-setposition
void Selection::set_position(JS::GCPtr<DOM::Node> node, unsigned offset)
WebIDL::ExceptionOr<void> Selection::set_position(JS::GCPtr<DOM::Node> node, unsigned offset)
{
// The method must be an alias, and behave identically, to collapse().
collapse(node, offset);
return collapse(node, offset);
}
// https://w3c.github.io/selection-api/#dom-selection-collapsetostart

4
Userland/Libraries/LibWeb/Selection/Selection.h
View file

@ -37,8 +37,8 @@ public:
WebIDL::ExceptionOr<void> remove_range(JS::NonnullGCPtr<DOM::Range>);
void remove_all_ranges();
void empty();
void collapse(JS::GCPtr<DOM::Node>, unsigned offset);
void set_position(JS::GCPtr<DOM::Node>, unsigned offset);
WebIDL::ExceptionOr<void> collapse(JS::GCPtr<DOM::Node>, unsigned offset);
WebIDL::ExceptionOr<void> set_position(JS::GCPtr<DOM::Node>, unsigned offset);
void collapse_to_start();
void collapse_to_end();
WebIDL::ExceptionOr<void> extend(JS::NonnullGCPtr<DOM::Node>, unsigned offset);