ladybird/Userland/Libraries/LibWeb/DOM/Text.cpp
Shannon Booth bad44f8fc9 LibWeb: Remove Bindings/Forward.h from LibWeb/Forward.h
This was resulting in a whole lot of rebuilding whenever a new IDL
interface was added.

Instead, just directly include the prototype in every C++ file which
needs it. While we only really need a forward declaration in each cpp
file; including the full prototype header (which itself only includes
LibJS/Object.h, which is already transitively brought in by
PlatformObject) - it seems like a small price to pay compared to what
feels like a full rebuild of LibWeb whenever a new IDL file is added.

Given all of these includes are only needed for the ::initialize
method, there is probably a smart way of avoiding this problem
altogether. I've considered both using some macro trickery or generating
these functions somehow instead.
2024-04-27 18:29:35 -04:00

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