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112 lines
4.3 KiB
C++
112 lines
4.3 KiB
C++
/*
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* Copyright (c) 2018-2022, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/DOM/Range.h>
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#include <LibWeb/DOM/Text.h>
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#include <LibWeb/HTML/Scripting/Environments.h>
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#include <LibWeb/HTML/Window.h>
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#include <LibWeb/Layout/TextNode.h>
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namespace Web::DOM {
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JS_DEFINE_ALLOCATOR(Text);
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Text::Text(Document& document, String const& data)
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: CharacterData(document, NodeType::TEXT_NODE, data)
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{
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}
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Text::Text(Document& document, NodeType type, String const& data)
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: CharacterData(document, type, data)
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{
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}
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void Text::initialize(JS::Realm& realm)
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{
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Base::initialize(realm);
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set_prototype(&Bindings::ensure_web_prototype<Bindings::TextPrototype>(realm, "Text"_fly_string));
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}
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void Text::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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SlottableMixin::visit_edges(visitor);
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visitor.visit(dynamic_cast<JS::Cell*>(m_owner.ptr()));
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}
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// https://dom.spec.whatwg.org/#dom-text-text
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WebIDL::ExceptionOr<JS::NonnullGCPtr<Text>> Text::construct_impl(JS::Realm& realm, String const& data)
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{
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// The new Text(data) constructor steps are to set this’s data to data and this’s node document to current global object’s associated Document.
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auto& window = verify_cast<HTML::Window>(HTML::current_global_object());
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return realm.heap().allocate<Text>(realm, window.associated_document(), data);
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}
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// https://dom.spec.whatwg.org/#dom-text-splittext
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// https://dom.spec.whatwg.org/#concept-text-split
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WebIDL::ExceptionOr<JS::NonnullGCPtr<Text>> Text::split_text(size_t offset)
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{
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// 1. Let length be node’s length.
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auto length = this->length();
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// 2. If offset is greater than length, then throw an "IndexSizeError" DOMException.
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if (offset > length)
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return WebIDL::IndexSizeError::create(realm(), "Split offset is greater than length"_fly_string);
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// 3. Let count be length minus offset.
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auto count = length - offset;
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// 4. Let new data be the result of substringing data with node node, offset offset, and count count.
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auto new_data = TRY(substring_data(offset, count));
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// 5. Let new node be a new Text node, with the same node document as node. Set new node’s data to new data.
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auto new_node = heap().allocate<Text>(realm(), document(), new_data);
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// 6. Let parent be node’s parent.
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JS::GCPtr<Node> parent = this->parent();
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// 7. If parent is not null, then:
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if (parent) {
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// 1. Insert new node into parent before node’s next sibling.
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parent->insert_before(*new_node, next_sibling());
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// 2. For each live range whose start node is node and start offset is greater than offset, set its start node to new node and decrease its start offset by offset.
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for (auto& range : Range::live_ranges()) {
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if (range->start_container() == this && range->start_offset() > offset)
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TRY(range->set_start(*new_node, range->start_offset() - offset));
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}
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// 3. For each live range whose end node is node and end offset is greater than offset, set its end node to new node and decrease its end offset by offset.
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for (auto& range : Range::live_ranges()) {
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if (range->end_container() == this && range->end_offset() > offset)
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TRY(range->set_end(*new_node, range->end_offset() - offset));
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}
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// 4. For each live range whose start node is parent and start offset is equal to the index of node plus 1, increase its start offset by 1.
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for (auto& range : Range::live_ranges()) {
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if (range->start_container() == this && range->start_offset() == index() + 1)
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TRY(range->set_start(*range->start_container(), range->start_offset() + 1));
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}
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// 5. For each live range whose end node is parent and end offset is equal to the index of node plus 1, increase its end offset by 1.
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for (auto& range : Range::live_ranges()) {
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if (range->end_container() == parent.ptr() && range->end_offset() == index() + 1) {
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TRY(range->set_end(*range->end_container(), range->end_offset() + 1));
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}
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}
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}
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// 8. Replace data with node node, offset offset, count count, and data the empty string.
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TRY(replace_data(offset, count, String {}));
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// 9. Return new node.
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return new_node;
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}
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}
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