ladybird/Userland/Libraries/LibWeb/HTML/HTMLTableElement.cpp

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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Adam Hodgen <ant1441@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/CSS/Parser/Parser.h>
#include <LibWeb/DOM/ElementFactory.h>
#include <LibWeb/DOM/HTMLCollection.h>
#include <LibWeb/HTML/HTMLTableColElement.h>
#include <LibWeb/HTML/HTMLTableElement.h>
#include <LibWeb/HTML/HTMLTableRowElement.h>
#include <LibWeb/HTML/Parser/HTMLParser.h>
#include <LibWeb/Namespace.h>
namespace Web::HTML {
HTMLTableElement::HTMLTableElement(DOM::Document& document, DOM::QualifiedName qualified_name)
: HTMLElement(document, move(qualified_name))
{
set_prototype(&Bindings::cached_web_prototype(realm(), "HTMLTableElement"));
}
HTMLTableElement::~HTMLTableElement() = default;
void HTMLTableElement::apply_presentational_hints(CSS::StyleProperties& style) const
{
for_each_attribute([&](auto& name, auto& value) {
if (name == HTML::AttributeNames::width) {
if (auto parsed_value = parse_nonzero_dimension_value(value))
style.set_property(CSS::PropertyID::Width, parsed_value.release_nonnull());
return;
}
if (name == HTML::AttributeNames::height) {
if (auto parsed_value = parse_nonzero_dimension_value(value))
style.set_property(CSS::PropertyID::Height, parsed_value.release_nonnull());
return;
}
if (name == HTML::AttributeNames::bgcolor) {
auto color = Color::from_string(value);
if (color.has_value())
style.set_property(CSS::PropertyID::BackgroundColor, CSS::ColorStyleValue::create(color.value()));
return;
}
});
}
JS::GCPtr<HTMLTableCaptionElement> HTMLTableElement::caption()
{
return first_child_of_type<HTMLTableCaptionElement>();
}
void HTMLTableElement::set_caption(HTMLTableCaptionElement* caption)
{
// FIXME: This is not always the case, but this function is currently written in a way that assumes non-null.
VERIFY(caption);
// FIXME: The spec requires deleting the current caption if caption is null
// Currently the wrapper generator doesn't send us a nullable value
delete_caption();
MUST(pre_insert(*caption, first_child()));
}
JS::NonnullGCPtr<HTMLTableCaptionElement> HTMLTableElement::create_caption()
{
auto maybe_caption = caption();
if (maybe_caption) {
return *maybe_caption;
}
auto caption = DOM::create_element(document(), TagNames::caption, Namespace::HTML);
MUST(pre_insert(caption, first_child()));
return static_cast<HTMLTableCaptionElement&>(*caption);
}
void HTMLTableElement::delete_caption()
{
auto maybe_caption = caption();
if (maybe_caption) {
maybe_caption->remove(false);
}
}
JS::GCPtr<HTMLTableSectionElement> HTMLTableElement::t_head()
{
for (auto* child = first_child(); child; child = child->next_sibling()) {
if (is<HTMLTableSectionElement>(*child)) {
auto table_section_element = &verify_cast<HTMLTableSectionElement>(*child);
if (table_section_element->local_name() == TagNames::thead)
return table_section_element;
}
}
return nullptr;
}
WebIDL::ExceptionOr<void> HTMLTableElement::set_t_head(HTMLTableSectionElement* thead)
{
// FIXME: This is not always the case, but this function is currently written in a way that assumes non-null.
VERIFY(thead);
if (thead->local_name() != TagNames::thead)
return WebIDL::HierarchyRequestError::create(realm(), "Element is not thead");
// FIXME: The spec requires deleting the current thead if thead is null
// Currently the wrapper generator doesn't send us a nullable value
delete_t_head();
// We insert the new thead after any <caption> or <colgroup> elements
DOM::Node* child_to_append_after = nullptr;
for (auto* child = first_child(); child; child = child->next_sibling()) {
if (!is<HTMLElement>(*child))
continue;
if (is<HTMLTableCaptionElement>(*child))
continue;
if (is<HTMLTableColElement>(*child)) {
auto table_col_element = &verify_cast<HTMLTableColElement>(*child);
if (table_col_element->local_name() == TagNames::colgroup)
continue;
}
// We have found an element which is not a <caption> or <colgroup>, we'll insert before this
child_to_append_after = child;
break;
}
TRY(pre_insert(*thead, child_to_append_after));
return {};
}
JS::NonnullGCPtr<HTMLTableSectionElement> HTMLTableElement::create_t_head()
{
auto maybe_thead = t_head();
if (maybe_thead)
return *maybe_thead;
auto thead = DOM::create_element(document(), TagNames::thead, Namespace::HTML);
// We insert the new thead after any <caption> or <colgroup> elements
DOM::Node* child_to_append_after = nullptr;
for (auto* child = first_child(); child; child = child->next_sibling()) {
if (!is<HTMLElement>(*child))
continue;
if (is<HTMLTableCaptionElement>(*child))
continue;
if (is<HTMLTableColElement>(*child)) {
auto table_col_element = &verify_cast<HTMLTableColElement>(*child);
if (table_col_element->local_name() == TagNames::colgroup)
continue;
}
// We have found an element which is not a <caption> or <colgroup>, we'll insert before this
child_to_append_after = child;
break;
}
MUST(pre_insert(thead, child_to_append_after));
return static_cast<HTMLTableSectionElement&>(*thead);
}
void HTMLTableElement::delete_t_head()
{
auto maybe_thead = t_head();
if (maybe_thead) {
maybe_thead->remove(false);
}
}
JS::GCPtr<HTMLTableSectionElement> HTMLTableElement::t_foot()
{
for (auto* child = first_child(); child; child = child->next_sibling()) {
if (is<HTMLTableSectionElement>(*child)) {
auto table_section_element = &verify_cast<HTMLTableSectionElement>(*child);
if (table_section_element->local_name() == TagNames::tfoot)
return table_section_element;
}
}
return nullptr;
}
WebIDL::ExceptionOr<void> HTMLTableElement::set_t_foot(HTMLTableSectionElement* tfoot)
{
// FIXME: This is not always the case, but this function is currently written in a way that assumes non-null.
VERIFY(tfoot);
if (tfoot->local_name() != TagNames::tfoot)
return WebIDL::HierarchyRequestError::create(realm(), "Element is not tfoot");
// FIXME: The spec requires deleting the current tfoot if tfoot is null
// Currently the wrapper generator doesn't send us a nullable value
delete_t_foot();
// We insert the new tfoot at the end of the table
TRY(append_child(*tfoot));
return {};
}
JS::NonnullGCPtr<HTMLTableSectionElement> HTMLTableElement::create_t_foot()
{
auto maybe_tfoot = t_foot();
if (maybe_tfoot)
return *maybe_tfoot;
auto tfoot = DOM::create_element(document(), TagNames::tfoot, Namespace::HTML);
MUST(append_child(tfoot));
return static_cast<HTMLTableSectionElement&>(*tfoot);
}
void HTMLTableElement::delete_t_foot()
{
auto maybe_tfoot = t_foot();
if (maybe_tfoot) {
maybe_tfoot->remove(false);
}
}
JS::NonnullGCPtr<DOM::HTMLCollection> HTMLTableElement::t_bodies()
{
return DOM::HTMLCollection::create(*this, [](DOM::Element const& element) {
return element.local_name() == TagNames::tbody;
});
}
JS::NonnullGCPtr<HTMLTableSectionElement> HTMLTableElement::create_t_body()
{
auto tbody = DOM::create_element(document(), TagNames::tbody, Namespace::HTML);
// We insert the new tbody after the last <tbody> element
DOM::Node* child_to_append_after = nullptr;
for (auto* child = last_child(); child; child = child->previous_sibling()) {
if (!is<HTMLElement>(*child))
continue;
if (is<HTMLTableSectionElement>(*child)) {
auto table_section_element = &verify_cast<HTMLTableSectionElement>(*child);
if (table_section_element->local_name() == TagNames::tbody) {
// We have found an element which is a <tbody> we'll insert after this
child_to_append_after = child->next_sibling();
break;
}
}
}
MUST(pre_insert(tbody, child_to_append_after));
return static_cast<HTMLTableSectionElement&>(*tbody);
}
JS::NonnullGCPtr<DOM::HTMLCollection> HTMLTableElement::rows()
{
HTMLTableElement* table_node = this;
// FIXME: The elements in the collection must be ordered such that those elements whose parent is a thead are
// included first, in tree order, followed by those elements whose parent is either a table or tbody
// element, again in tree order, followed finally by those elements whose parent is a tfoot element,
// still in tree order.
// How do you sort HTMLCollection?
return DOM::HTMLCollection::create(*this, [table_node](DOM::Element const& element) {
// Only match TR elements which are:
// * children of the table element
// * children of the thead, tbody, or tfoot elements that are themselves children of the table element
if (!is<HTMLTableRowElement>(element)) {
return false;
}
if (element.parent_element() == table_node)
return true;
if (element.parent_element() && (element.parent_element()->local_name() == TagNames::thead || element.parent_element()->local_name() == TagNames::tbody || element.parent_element()->local_name() == TagNames::tfoot)
&& element.parent()->parent() == table_node) {
return true;
}
return false;
});
}
WebIDL::ExceptionOr<JS::NonnullGCPtr<HTMLTableRowElement>> HTMLTableElement::insert_row(long index)
{
auto rows = this->rows();
auto rows_length = rows->length();
if (index < -1 || index > (long)rows_length) {
return WebIDL::IndexSizeError::create(realm(), "Index is negative or greater than the number of rows");
}
auto& tr = static_cast<HTMLTableRowElement&>(*DOM::create_element(document(), TagNames::tr, Namespace::HTML));
if (rows_length == 0 && !has_child_of_type<HTMLTableRowElement>()) {
auto tbody = DOM::create_element(document(), TagNames::tbody, Namespace::HTML);
TRY(tbody->append_child(tr));
TRY(append_child(tbody));
} else if (rows_length == 0) {
auto tbody = last_child_of_type<HTMLTableRowElement>();
TRY(tbody->append_child(tr));
} else if (index == -1 || index == (long)rows_length) {
auto parent_of_last_tr = rows->item(rows_length - 1)->parent_element();
TRY(parent_of_last_tr->append_child(tr));
} else {
rows->item(index)->parent_element()->insert_before(tr, rows->item(index));
}
return JS::NonnullGCPtr(tr);
}
// https://html.spec.whatwg.org/multipage/tables.html#dom-table-deleterow
WebIDL::ExceptionOr<void> HTMLTableElement::delete_row(long index)
{
auto rows = this->rows();
auto rows_length = rows->length();
// 1. If index is less than 1 or greater than or equal to the number of elements in the rows collection, then throw an "IndexSizeError" DOMException.
if (index < -1 || index >= (long)rows_length)
return WebIDL::IndexSizeError::create(realm(), "Index is negative or greater than or equal to the number of rows");
// 2. If index is 1, then remove the last element in the rows collection from its parent, or do nothing if the rows collection is empty.
if (index == -1) {
if (rows_length == 0)
return {};
auto row_to_remove = rows->item(rows_length - 1);
row_to_remove->remove(false);
return {};
}
// 3. Otherwise, remove the indexth element in the rows collection from its parent.
auto row_to_remove = rows->item(index);
row_to_remove->remove(false);
return {};
}
}