blob: 83e2af14488aedfedc724ce93c1a8ecde0d8ae9e [file] [log] [blame]
/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009 Apple Inc.
* All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef LayoutListMarker_h
#define LayoutListMarker_h
#include "core/CoreExport.h"
#include "core/layout/LayoutBox.h"
namespace blink {
class LayoutListItem;
// Used to layout the list item's marker.
// The LayoutListMarker always has to be a child of a LayoutListItem.
class LayoutListMarker final : public LayoutBox {
public:
static LayoutListMarker* CreateAnonymous(LayoutListItem*);
~LayoutListMarker() override;
// Marker text without suffix, e.g. "1".
const String& GetText() const { return text_; }
// Marker text with suffix, e.g. "1. ", for use in accessibility.
CORE_EXPORT String TextAlternative() const;
// A reduced set of list style categories allowing for more concise expression
// of list style specific logic.
enum class ListStyleCategory { kNone, kSymbol, kLanguage };
// Returns the list's style as one of a reduced high level categorical set of
// styles.
ListStyleCategory GetListStyleCategory() const;
static ListStyleCategory GetListStyleCategory(EListStyleType);
bool IsInside() const;
void UpdateMarginsAndContent();
// Compute inline margins for 'list-style-position: inside' and 'outside'.
static std::pair<LayoutUnit, LayoutUnit> InlineMarginsForInside(
const ComputedStyle&,
bool is_image);
static std::pair<LayoutUnit, LayoutUnit> InlineMarginsForOutside(
const ComputedStyle&,
bool is_image,
LayoutUnit marker_inline_size);
LayoutRect GetRelativeMarkerRect() const;
LayoutRect LocalSelectionRect() const final;
bool IsImage() const override;
const StyleImage* GetImage() const { return image_.Get(); }
const LayoutListItem* ListItem() const { return list_item_; }
LayoutSize ImageBulletSize() const;
void ListItemStyleDidChange();
const char* GetName() const override { return "LayoutListMarker"; }
LayoutUnit LineOffset() const { return line_offset_; }
protected:
void WillBeDestroyed() override;
private:
LayoutListMarker(LayoutListItem*);
void ComputePreferredLogicalWidths() override;
bool IsOfType(LayoutObjectType type) const override {
return type == kLayoutObjectListMarker || LayoutBox::IsOfType(type);
}
void Paint(const PaintInfo&, const LayoutPoint&) const override;
void UpdateLayout() override;
void ImageChanged(WrappedImagePtr,
CanDeferInvalidation,
const IntRect* = nullptr) override;
InlineBox* CreateInlineBox() override;
LayoutUnit LineHeight(
bool first_line,
LineDirectionMode,
LinePositionMode = kPositionOnContainingLine) const override;
LayoutUnit BaselinePosition(
FontBaseline,
bool first_line,
LineDirectionMode,
LinePositionMode = kPositionOnContainingLine) const override;
bool IsText() const { return !IsImage(); }
LayoutUnit GetWidthOfTextWithSuffix() const;
void UpdateMargins();
void UpdateContent();
void StyleWillChange(StyleDifference,
const ComputedStyle& new_style) override;
void StyleDidChange(StyleDifference, const ComputedStyle* old_style) override;
bool AnonymousHasStylePropagationOverride() override { return true; }
bool PaintedOutputOfObjectHasNoEffectRegardlessOfSize() const override {
return false;
}
String text_;
Persistent<StyleImage> image_;
LayoutListItem* list_item_;
LayoutUnit line_offset_;
};
DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutListMarker, IsListMarker());
} // namespace blink
#endif // LayoutListMarker_h