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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_STYLE_GRID_POSITIONS_RESOLVER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_STYLE_GRID_POSITIONS_RESOLVER_H_
#include "third_party/blink/renderer/core/style/grid_position.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
namespace blink {
struct GridSpan;
class LayoutBox;
class ComputedStyle;
enum GridPositionSide {
kColumnStartSide,
kColumnEndSide,
kRowStartSide,
kRowEndSide
};
enum GridTrackSizingDirection { kForColumns, kForRows };
class NamedLineCollection {
public:
NamedLineCollection(const ComputedStyle&,
const String& named_line,
GridTrackSizingDirection,
wtf_size_t last_line,
wtf_size_t auto_repeat_tracks_count);
bool HasNamedLines();
wtf_size_t FirstPosition();
bool Contains(wtf_size_t line);
private:
bool HasExplicitNamedLines();
wtf_size_t FirstExplicitPosition();
const Vector<wtf_size_t>* named_lines_indexes_ = nullptr;
const Vector<wtf_size_t>* auto_repeat_named_lines_indexes_ = nullptr;
const Vector<wtf_size_t>* implicit_named_lines_indexes_ = nullptr;
wtf_size_t insertion_point_;
wtf_size_t last_line_;
wtf_size_t auto_repeat_total_tracks_;
wtf_size_t auto_repeat_track_list_length_;
NamedLineCollection(const NamedLineCollection&) = delete;
NamedLineCollection& operator=(const NamedLineCollection&) = delete;
};
// This is a utility class with all the code related to grid items positions
// resolution.
class GridPositionsResolver {
DISALLOW_NEW();
public:
static wtf_size_t ExplicitGridColumnCount(
const ComputedStyle&,
wtf_size_t auto_repeat_columns_count);
static wtf_size_t ExplicitGridRowCount(const ComputedStyle&,
wtf_size_t auto_repeat_rows_count);
static GridPositionSide InitialPositionSide(GridTrackSizingDirection);
static GridPositionSide FinalPositionSide(GridTrackSizingDirection);
static wtf_size_t SpanSizeForAutoPlacedItem(const ComputedStyle&,
GridTrackSizingDirection);
static GridSpan ResolveGridPositionsFromStyle(
const ComputedStyle&,
const ComputedStyle&,
GridTrackSizingDirection,
wtf_size_t auto_repeat_tracks_count);
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_STYLE_GRID_POSITIONS_RESOLVER_H_
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