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// Copyright 2018 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_ABSTRACT_INLINE_TEXT_BOX_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_NG_INLINE_NG_ABSTRACT_INLINE_TEXT_BOX_H_
#include "third_party/blink/renderer/core/layout/line/abstract_inline_text_box.h"
namespace blink {
class NGPaintFragment;
class NGPhysicalTextFragment;
// The implementation of |AbstractInlineTextBox| for LayoutNG.
// See also |LegacyAbstractInlineTextBox| for legacy layout.
class CORE_EXPORT NGAbstractInlineTextBox final : public AbstractInlineTextBox {
private:
// Returns existing or newly created |NGAbstractInlineTextBox|.
// * |fragment| should be attached to |NGPhysicalTextFragment|.
static scoped_refptr<AbstractInlineTextBox> GetOrCreate(
const NGPaintFragment& fragment);
static void WillDestroy(NGPaintFragment*);
friend class LayoutText;
friend class NGPaintFragment;
public:
~NGAbstractInlineTextBox() final;
private:
NGAbstractInlineTextBox(LineLayoutText line_layout_item,
const NGPaintFragment& fragment);
const NGPhysicalTextFragment& PhysicalTextFragment() const;
bool NeedsLayout() const;
bool NeedsTrailingSpace() const;
// Returns next fragment associated to |LayoutText|.
const NGPaintFragment* NextTextFragmentForSameLayoutObject() const;
// Implementations of AbstractInlineTextBox member functions.
void Detach() final;
scoped_refptr<AbstractInlineTextBox> NextInlineTextBox() const final;
LayoutRect LocalBounds() const final;
unsigned Len() const final;
unsigned TextOffsetInContainer(unsigned offset) const final;
Direction GetDirection() const final;
void CharacterWidths(Vector<float>&) const final;
String GetText() const final;
bool IsFirst() const final;
bool IsLast() const final;
scoped_refptr<AbstractInlineTextBox> NextOnLine() const final;
scoped_refptr<AbstractInlineTextBox> PreviousOnLine() const final;
bool IsLineBreak() const final;
const NGPaintFragment* fragment_;
using FragmentToNGAbstractInlineTextBoxHashMap =
HashMap<const NGPaintFragment*, scoped_refptr<AbstractInlineTextBox>>;
static FragmentToNGAbstractInlineTextBoxHashMap*
g_abstract_inline_text_box_map_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_NG_INLINE_NG_ABSTRACT_INLINE_TEXT_BOX_H_
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