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/*
* Copyright (C) 1997 Martin Jones (mjones@kde.org)
* (C) 1997 Torben Weis (weis@kde.org)
* (C) 1998 Waldo Bastian (bastian@kde.org)
* (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* Copyright (C) 2003, 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.
* Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
*
* 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.
*/
#include "third_party/blink/renderer/core/layout/layout_table_col.h"
#include "third_party/blink/renderer/core/html/html_table_col_element.h"
#include "third_party/blink/renderer/core/html_names.h"
#include "third_party/blink/renderer/core/layout/layout_table.h"
#include "third_party/blink/renderer/core/layout/layout_table_cell.h"
namespace blink {
LayoutTableCol::LayoutTableCol(Element* element)
: LayoutTableBoxComponent(element), span_(1) {
// init LayoutObject attributes
SetInline(true); // our object is not Inline
UpdateFromElement();
}
void LayoutTableCol::StyleDidChange(StyleDifference diff,
const ComputedStyle* old_style) {
DCHECK(StyleRef().Display() == EDisplay::kTableColumn ||
StyleRef().Display() == EDisplay::kTableColumnGroup);
LayoutTableBoxComponent::StyleDidChange(diff, old_style);
if (!old_style)
return;
LayoutTable* table = Table();
if (!table)
return;
LayoutTableBoxComponent::InvalidateCollapsedBordersOnStyleChange(
*this, *table, diff, *old_style);
if ((old_style->LogicalWidth() != StyleRef().LogicalWidth()) ||
LayoutTableBoxComponent::DoCellsHaveDirtyWidth(*this, *table, diff,
*old_style)) {
// TODO(dgrogan): Optimization opportunities:
// (1) Only mark cells which are affected by this col, not every cell in the
// table.
// (2) If only the col width changes and its border width doesn't, do the
// cells need to be marked as needing layout or just given dirty
// widths?
table->MarkAllCellsWidthsDirtyAndOrNeedsLayout(
LayoutTable::kMarkDirtyAndNeedsLayout);
}
}
void LayoutTableCol::UpdateFromElement() {
unsigned old_span = span_;
if (auto* tc = DynamicTo<HTMLTableColElement>(GetNode())) {
span_ = tc->span();
} else {
span_ = 1;
}
if (span_ != old_span && Style() && Parent()) {
SetNeedsLayoutAndIntrinsicWidthsRecalcAndFullPaintInvalidation(
layout_invalidation_reason::kAttributeChanged);
}
}
void LayoutTableCol::InsertedIntoTree() {
LayoutTableBoxComponent::InsertedIntoTree();
Table()->AddColumn(this);
}
void LayoutTableCol::WillBeRemovedFromTree() {
LayoutTableBoxComponent::WillBeRemovedFromTree();
Table()->RemoveColumn(this);
}
bool LayoutTableCol::IsChildAllowed(LayoutObject* child,
const ComputedStyle& style) const {
// We cannot use isTableColumn here as style() may return 0.
return child->IsLayoutTableCol() && style.Display() == EDisplay::kTableColumn;
}
bool LayoutTableCol::CanHaveChildren() const {
// Cols cannot have children. This is actually necessary to fix a bug
// with libraries.uc.edu, which makes a <p> be a table-column.
return IsTableColumnGroup();
}
void LayoutTableCol::ClearIntrinsicLogicalWidthsDirtyBits() {
ClearIntrinsicLogicalWidthsDirty();
for (LayoutObject* child = FirstChild(); child; child = child->NextSibling())
child->ClearIntrinsicLogicalWidthsDirty();
}
LayoutTable* LayoutTableCol::Table() const {
LayoutObject* table = Parent();
if (table && !table->IsTable())
table = table->Parent();
return table && table->IsTable() ? To<LayoutTable>(table) : nullptr;
}
LayoutTableCol* LayoutTableCol::EnclosingColumnGroup() const {
if (!Parent()->IsLayoutTableCol())
return nullptr;
LayoutTableCol* parent_column_group = ToLayoutTableCol(Parent());
DCHECK(parent_column_group->IsTableColumnGroup());
DCHECK(IsTableColumn());
return parent_column_group;
}
LayoutTableCol* LayoutTableCol::NextColumn() const {
// If |this| is a column-group, the next column is the colgroup's first child
// column.
if (LayoutObject* first_child = FirstChild())
return ToLayoutTableCol(first_child);
// Otherwise it's the next column along.
LayoutObject* next = NextSibling();
// Failing that, the child is the last column in a column-group, so the next
// column is the next column/column-group after its column-group.
if (!next && Parent()->IsLayoutTableCol())
next = Parent()->NextSibling();
for (; next && !next->IsLayoutTableCol(); next = next->NextSibling()) {
}
return ToLayoutTableCol(next);
}
} // namespace blink
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