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// Copyright 2017 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_LAYOUT_NG_INLINE_NG_INLINE_NODE_DATA_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_NG_INLINE_NG_INLINE_NODE_DATA_H_
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/layout/ng/inline/ng_inline_item.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"
namespace blink {
template <typename OffsetMappingBuilder>
class NGInlineItemsBuilderTemplate;
// Data which is required for inline nodes.
struct CORE_EXPORT NGInlineNodeData : NGInlineItemsData {
public:
bool IsBidiEnabled() const { return is_bidi_enabled_; }
TextDirection BaseDirection() const {
return static_cast<TextDirection>(base_direction_);
}
bool HasLineEvenIfEmpty() const { return has_line_even_if_empty_; }
bool HasRuby() const { return has_ruby_; }
bool IsEmptyInline() const { return is_empty_inline_; }
bool IsBlockLevel() const { return is_block_level_; }
const NGInlineItemsData& ItemsData(bool is_first_line) const {
return !is_first_line || !first_line_items_
? (const NGInlineItemsData&)*this
: *first_line_items_;
}
private:
void SetBaseDirection(TextDirection direction) {
base_direction_ = static_cast<unsigned>(direction);
}
friend class NGInlineItemsBuilderTest;
friend class NGInlineNode;
friend class NGInlineNodeLegacy;
friend class NGInlineNodeForTest;
friend class NGOffsetMappingTest;
template <typename OffsetMappingBuilder>
friend class NGInlineItemsBuilderTemplate;
// Items to use for the first line, when the node has :first-line rules.
//
// Items have different ComputedStyle, and may also have different
// text_content and ShapeResult if 'text-transform' is applied or fonts are
// different.
std::unique_ptr<NGInlineItemsData> first_line_items_;
unsigned is_bidi_enabled_ : 1;
unsigned base_direction_ : 1; // TextDirection
// True if there are no inline item items and the associated block is root
// editable element or having "-internal-empty-line-height:fabricated",
// e.g. <div contenteditable></div>, <input type=button value="">
unsigned has_line_even_if_empty_ : 1;
// The node contains <ruby>.
unsigned has_ruby_ : 1;
// We use this flag to determine if the inline node is empty, and will
// produce a single zero block-size line box. If the node has text, atomic
// inlines, open/close tags with margins/border/padding this will be false.
unsigned is_empty_inline_ : 1;
// We use this flag to determine if we have *only* floats, and OOF-positioned
// children. If so we consider them block-level, and run the
// |NGBlockLayoutAlgorithm| instead of the |NGInlineLayoutAlgorithm|. This is
// done to pick up block-level static-position behaviour.
unsigned is_block_level_ : 1;
// True if changes to an item may affect different layout of earlier lines.
// May not be able to use line caches even when the line or earlier lines are
// not dirty.
unsigned changes_may_affect_earlier_lines_ : 1;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_NG_INLINE_NG_INLINE_NODE_DATA_H_
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