ladybird/Libraries/LibWeb/CSS/StyleValues/GridTemplateAreaStyleValue.cpp
Aliaksandr Kalenik 795222fab3 LibWeb: Validate grid-template-areas rectangles at parse time
Move grid area rectangle computation and validation from layout to the
CSS parser. Named grid areas that don't form filled-in rectangles now
correctly invalidate the declaration per spec.
2026-02-21 21:46:34 +01:00

49 lines
1.5 KiB
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <andreas@ladybird.org>
* Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org>
* Copyright (c) 2021-2024, Sam Atkins <sam@ladybird.org>
* Copyright (c) 2022-2023, MacDue <macdue@dueutil.tech>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "GridTemplateAreaStyleValue.h"
#include <LibWeb/CSS/Serialize.h>
namespace Web::CSS {
ValueComparingNonnullRefPtr<GridTemplateAreaStyleValue const> GridTemplateAreaStyleValue::create(HashMap<String, GridArea> grid_areas, size_t row_count, size_t column_count)
{
return adopt_ref(*new (nothrow) GridTemplateAreaStyleValue(move(grid_areas), row_count, column_count));
}
String GridTemplateAreaStyleValue::cell_name_at(size_t row, size_t column) const
{
for (auto const& [name, area] : m_grid_areas) {
if (row >= area.row_start && row < area.row_end && column >= area.column_start && column < area.column_end)
return name;
}
return "."_string;
}
void GridTemplateAreaStyleValue::serialize(StringBuilder& builder, SerializationMode) const
{
if (m_row_count == 0) {
builder.append("none"sv);
return;
}
for (size_t y = 0; y < m_row_count; ++y) {
if (y != 0)
builder.append(' ');
StringBuilder row_builder;
for (size_t x = 0; x < m_column_count; ++x) {
if (x != 0)
row_builder.append(' ');
row_builder.append(cell_name_at(y, x));
}
serialize_a_string(builder, row_builder.string_view());
}
}
}