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// Copyright 2020 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.
#include "third_party/blink/renderer/core/style/grid_track_list.h"
#include "third_party/blink/renderer/platform/runtime_enabled_features.h"
#include "third_party/blink/renderer/platform/wtf/text/string_builder.h"
namespace blink {
NGGridTrackRepeater::NGGridTrackRepeater(wtf_size_t repeat_index,
wtf_size_t repeat_size,
wtf_size_t repeat_count,
RepeatType repeat_type)
: repeat_index(repeat_index),
repeat_size(repeat_size),
repeat_count(repeat_count),
repeat_type(repeat_type) {}
String NGGridTrackRepeater::ToString() const {
StringBuilder builder;
builder.Append("Repeater: [Index: ");
builder.AppendNumber<wtf_size_t>(repeat_index);
builder.Append("], [RepeatSize: ");
builder.AppendNumber<wtf_size_t>(repeat_size);
builder.Append("], [RepeatCount: ");
switch (repeat_type) {
case RepeatType::kNoAutoRepeat:
builder.AppendNumber<wtf_size_t>(repeat_count);
builder.Append("]");
break;
case RepeatType::kAutoFill:
builder.Append("auto-fill]");
break;
case RepeatType::kAutoFit:
builder.Append("auto-fit]");
break;
}
return builder.ToString();
}
bool NGGridTrackRepeater::operator==(const NGGridTrackRepeater& other) const {
return repeat_index == other.repeat_index &&
repeat_size == other.repeat_size &&
repeat_count == other.repeat_count && repeat_type == other.repeat_type;
}
wtf_size_t NGGridTrackList::RepeatCount(const wtf_size_t index,
const wtf_size_t auto_value) const {
DCHECK_LT(index, RepeaterCount());
if (index == auto_repeater_index_)
return auto_value;
return repeaters_[index].repeat_count;
}
wtf_size_t NGGridTrackList::RepeatSize(const wtf_size_t index) const {
DCHECK_LT(index, RepeaterCount());
return repeaters_[index].repeat_size;
}
NGGridTrackRepeater::RepeatType NGGridTrackList::RepeatType(
const wtf_size_t index) const {
DCHECK_LT(index, RepeaterCount());
return repeaters_[index].repeat_type;
}
const GridTrackSize& NGGridTrackList::RepeatTrackSize(
const wtf_size_t index,
const wtf_size_t n) const {
DCHECK_LT(index, RepeaterCount());
DCHECK_LT(n, RepeatSize(index));
wtf_size_t repeat_index = repeaters_[index].repeat_index;
DCHECK_LT(repeat_index + n, repeater_track_sizes_.size());
return repeater_track_sizes_[repeat_index + n];
}
wtf_size_t NGGridTrackList::RepeaterCount() const {
return repeaters_.size();
}
wtf_size_t NGGridTrackList::TotalTrackCount() const {
return total_track_count_;
}
wtf_size_t NGGridTrackList::AutoRepeatSize() const {
return HasAutoRepeater() ? repeaters_[auto_repeater_index_].repeat_size : 0;
}
bool NGGridTrackList::AddRepeater(
const Vector<GridTrackSize>& repeater_track_sizes,
wtf_size_t repeat_count) {
return AddRepeater(repeater_track_sizes,
NGGridTrackRepeater::RepeatType::kNoAutoRepeat,
repeat_count);
}
bool NGGridTrackList::AddAutoRepeater(
const Vector<GridTrackSize>& repeater_track_sizes,
NGGridTrackRepeater::RepeatType repeat_type) {
return AddRepeater(repeater_track_sizes, repeat_type, 1u);
}
bool NGGridTrackList::AddRepeater(
const Vector<GridTrackSize>& repeater_track_sizes,
NGGridTrackRepeater::RepeatType repeat_type,
wtf_size_t repeat_count) {
if (repeat_count == 0u || repeater_track_sizes.IsEmpty())
return false;
// If the repeater is auto, the repeat_count should be 1.
DCHECK(repeat_type == NGGridTrackRepeater::RepeatType::kNoAutoRepeat ||
repeat_count == 1u);
// Ensure adding tracks will not overflow the total in this track list and
// that there is only one auto repeater per track list.
wtf_size_t repeat_size = repeater_track_sizes.size();
switch (repeat_type) {
case NGGridTrackRepeater::RepeatType::kNoAutoRepeat:
if (repeat_size > AvailableTrackCount() / repeat_count)
return false;
total_track_count_ += repeat_size * repeat_count;
break;
case NGGridTrackRepeater::RepeatType::kAutoFill:
case NGGridTrackRepeater::RepeatType::kAutoFit: // Intentional Fallthrough.
if (HasAutoRepeater() || repeat_size > AvailableTrackCount())
return false;
total_track_count_ += repeat_size;
// Update auto repeater index and append repeater.
auto_repeater_index_ = repeaters_.size();
break;
}
repeaters_.emplace_back(repeater_track_sizes_.size(), repeat_size,
repeat_count, repeat_type);
repeater_track_sizes_.AppendVector(repeater_track_sizes);
return true;
}
String NGGridTrackList::ToString() const {
StringBuilder builder;
builder.Append("TrackList: {");
for (wtf_size_t i = 0; i < repeaters_.size(); ++i) {
builder.Append(" ");
builder.Append(repeaters_[i].ToString());
if (i + 1 != repeaters_.size())
builder.Append(", ");
}
builder.Append(" } ");
return builder.ToString();
}
bool NGGridTrackList::HasAutoRepeater() const {
return auto_repeater_index_ != kNotFound;
}
wtf_size_t NGGridTrackList::AvailableTrackCount() const {
return kNotFound - 1 - total_track_count_;
}
void NGGridTrackList::operator=(const NGGridTrackList& other) {
repeaters_ = other.repeaters_;
repeater_track_sizes_ = other.repeater_track_sizes_;
auto_repeater_index_ = other.auto_repeater_index_;
total_track_count_ = other.total_track_count_;
}
bool NGGridTrackList::operator==(const NGGridTrackList& other) const {
return TotalTrackCount() == other.TotalTrackCount() &&
RepeaterCount() == other.RepeaterCount() &&
auto_repeater_index_ == other.auto_repeater_index_ &&
repeaters_ == other.repeaters_ &&
repeater_track_sizes_ == other.repeater_track_sizes_;
}
GridTrackList::GridTrackList(const GridTrackList& other) {
AssignFrom(other);
}
GridTrackList::GridTrackList() {
if (RuntimeEnabledFeatures::LayoutNGGridEnabled()) {
ng_track_list_ = std::make_unique<NGGridTrackList>();
}
}
GridTrackList::GridTrackList(const GridTrackSize& default_track_size) {
if (RuntimeEnabledFeatures::LayoutNGGridEnabled()) {
ng_track_list_ = std::make_unique<NGGridTrackList>();
ng_track_list_->AddRepeater({default_track_size}, 1);
}
legacy_track_list_.push_back(default_track_size);
}
GridTrackList::GridTrackList(Vector<GridTrackSize>& legacy_tracks)
: legacy_track_list_(std::move(legacy_tracks)) {
if (RuntimeEnabledFeatures::LayoutNGGridEnabled()) {
ng_track_list_ = std::make_unique<NGGridTrackList>();
ng_track_list_->AddRepeater(legacy_track_list_, 1);
}
}
Vector<GridTrackSize>& GridTrackList::LegacyTrackList() {
return legacy_track_list_;
}
const Vector<GridTrackSize>& GridTrackList::LegacyTrackList() const {
return legacy_track_list_;
}
NGGridTrackList& GridTrackList::NGTrackList() {
DCHECK(RuntimeEnabledFeatures::LayoutNGGridEnabled());
DCHECK(ng_track_list_);
return *ng_track_list_;
}
const NGGridTrackList& GridTrackList::NGTrackList() const {
DCHECK(RuntimeEnabledFeatures::LayoutNGGridEnabled());
DCHECK(ng_track_list_);
return *ng_track_list_;
}
void GridTrackList::operator=(const GridTrackList& other) {
AssignFrom(other);
}
bool GridTrackList::operator==(const GridTrackList& other) const {
if (RuntimeEnabledFeatures::LayoutNGGridEnabled()) {
return *ng_track_list_ == *other.ng_track_list_;
}
return LegacyTrackList() == other.LegacyTrackList();
}
bool GridTrackList::operator!=(const GridTrackList& other) const {
return !(*this == other);
}
void GridTrackList::AssignFrom(const GridTrackList& other) {
if (RuntimeEnabledFeatures::LayoutNGGridEnabled()) {
DCHECK(other.ng_track_list_);
ng_track_list_ = std::make_unique<NGGridTrackList>(*other.ng_track_list_);
}
legacy_track_list_ = other.legacy_track_list_;
}
} // namespace blink
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