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LibWeb: Implement user-select

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This implements all values of user-select.
This commit is contained in:
Psychpsyo 2025-01-08 01:51:29 +01:00 • committed by Sam Atkins
commit 9370990ff2
Notes: github-actions[bot] 2025-01-08 14:38:35 +00:00
11 changed files with 274 additions and 29 deletions
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12
Libraries/LibWeb/Painting/ViewportPaintable.cpp
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@ -315,14 +315,18 @@ void ViewportPaintable::recompute_selection_states(DOM::Range& range)
// 4. Mark the selection end node as End (if text) or Full (if anything else).
if (auto* paintable = end_container->paintable()) {
if (is<DOM::Text>(*end_container))
if (is<DOM::Text>(*end_container) || end_container->is_ancestor_of(start_container)) {
paintable->set_selection_state(SelectionState::End);
else
paintable->set_selection_state(SelectionState::Full);
} else {
paintable->for_each_in_inclusive_subtree([&](auto& layout_node) {
layout_node.set_selection_state(SelectionState::Full);
return TraversalDecision::Continue;
});
}
}
// 5. Mark the nodes between start node and end node (in tree order) as Full.
for (auto* node = start_container->next_in_pre_order(); node && node != end_container; node = node->next_in_pre_order()) {
for (auto* node = start_container->next_in_pre_order(); node && (node->is_before(end_container) || node->is_descendant_of(end_container)); node = node->next_in_pre_order()) {
if (auto* paintable = node->paintable())
paintable->set_selection_state(SelectionState::Full);
}