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 /*
  * This file is part of the DOM implementation for KDE.
  *
  * Copyright (C) 1997 Martin Jones (mjones@kde.org)
  *           (C) 1997 Torben Weis (weis@kde.org)
  *           (C) 1998 Waldo Bastian (bastian@kde.org)
  *           (C) 1999-2003 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2003 Apple Computer, Inc.
  *           (C) 2009 Carlos Licea (carlos.licea@kdemail.net)
  *
  * 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 RENDER_TABLE_H
 #define RENDER_TABLE_H
 
 #include <QColor>
 #include <QVector>
 
 #include "rendering/render_box.h"
 #include "rendering/render_block.h"
 #include "rendering/render_style.h"
 
 #include "misc/khtmllayout.h"
 
 namespace khtml
 {
 
 class RenderTable;
 class RenderTableSection;
 class RenderTableRow;
 class RenderTableCell;
 class RenderTableCol;
 class TableLayout;
 
 class RenderTable : public RenderBlock
 {
 public:
 
     RenderTable(DOM::NodeImpl *node);
     ~RenderTable();
 
     const char *renderName() const override
     {
         return "RenderTable";
     }
 
     void setStyle(RenderStyle *style) override;
 
     bool isTable() const override
     {
         return true;
     }
 
     int getColumnPos(int col) const
     {
         return columnPos[col];
     }
 
     int borderHSpacing() const
     {
         return hspacing;
     }
     int borderVSpacing() const
     {
         return vspacing;
     }
 
     bool collapseBorders() const
     {
         return style()->borderCollapse();
     }
     int borderLeft() const override;
     int borderRight() const override;
     int borderTop() const override;
     int borderBottom() const override;
     int paddingLeft() const override
     {
         return collapseBorders() ? 0 : RenderBlock::paddingLeft();
     }
     int paddingRight() const override
     {
         return collapseBorders() ? 0 : RenderBlock::paddingRight();
     }
     int paddingTop() const override
     {
         return collapseBorders() ? 0 : RenderBlock::paddingTop();
     }
     int paddingBottom() const override
     {
         return collapseBorders() ? 0 : RenderBlock::paddingBottom();
     }
 
     const QColor &bgColor() const
     {
         return style()->backgroundColor();
     }
 
     uint cellPadding() const
     {
         return padding;
     }
     void setCellPadding(uint p)
     {
         padding = p;
     }
 
     // overrides
     void addChild(RenderObject *child, RenderObject *beforeChild = nullptr) override;
     void paint(PaintInfo &, int tx, int ty) override;
     void paintBoxDecorations(PaintInfo &, int _tx, int _ty) override;
     void layout() override;
     void calcMinMaxWidth() override;
     void close() override;
 
     short lineHeight(bool b) const override;
     short baselinePosition(bool b) const override;
 
     virtual void setCellWidths();
 
     void calcWidth() override;
 
     QList< QRectF > getClientRects() override;
 
     virtual FindSelectionResult checkSelectionPoint(int _x, int _y, int _tx, int _ty,
             DOM::NodeImpl *&node, int &offset,
             SelPointState &);
 
 #ifdef ENABLE_DUMP
     void dump(QTextStream &stream, const QString &ind) const override;
 #endif
     struct ColumnStruct {
         enum {
             WidthUndefined = 0xffff
         };
         ColumnStruct()
         {
             span = 1;
             width = WidthUndefined;
         }
         ushort span;
         ushort width; // the calculated position of the column
     };
 
     QVector<int> columnPos;
     QVector<ColumnStruct> columns;
 
     void splitColumn(int pos, int firstSpan);
     void appendColumn(int span);
     int numEffCols() const
     {
         return columns.size();
     }
     int spanOfEffCol(int effCol) const
     {
         return columns[effCol].span;
     }
     int colToEffCol(int col) const
     {
         int c = 0;
         int i = 0;
         while (c < col && i < (int)columns.size()) {
             c += columns[i].span;
             i++;
         }
         return i;
     }
     int effColToCol(int effCol) const
     {
         int c = 0;
         for (int i = 0; i < effCol; i++) {
             c += columns[i].span;
         }
         return c;
     }
 
     int bordersPaddingAndSpacing() const
     {
         return borderLeft() + borderRight() +
                (collapseBorders() ? 0 : (paddingLeft() + paddingRight() + (numEffCols() + 1) * borderHSpacing()));
     }
 
     RenderTableCol *colElement(int col, bool *startEdge = nullptr, bool *endEdge = nullptr) const;
 
     void setNeedSectionRecalc()
     {
         needSectionRecalc = true;
     }
 
     RenderObject *removeChildNode(RenderObject *child) override;
 
     RenderTableSection *sectionAbove(const RenderTableSection *, bool skipEmptySections = false);
     RenderTableSection *sectionBelow(const RenderTableSection *, bool skipEmptySections = false);
 
     RenderTableCell *cellAbove(const RenderTableCell *cell);
     RenderTableCell *cellBelow(const RenderTableCell *cell);
     RenderTableCell *cellBefore(const RenderTableCell *cell);
     RenderTableCell *cellAfter(const RenderTableCell *cell);
 
     CollapsedBorderValue *currentBorderStyle()
     {
         return m_currentBorder;
     }
 
     RenderTableSection *firstBodySection() const
     {
         return firstBody;
     }
     RenderFlow         *caption() const
     {
         return tCaption;
     }
 
 protected:
 
     void recalcSections();
 
     friend class AutoTableLayout;
     friend class FixedTableLayout;
 
     RenderFlow         *tCaption;
     RenderTableSection *head;
     RenderTableSection *foot;
     RenderTableSection *firstBody;
 
     TableLayout *tableLayout;
 
     CollapsedBorderValue *m_currentBorder;
 
     bool has_col_elems      : 1;
     uint needSectionRecalc  : 1;
     uint padding        : 22;
 
     ushort hspacing;
     ushort vspacing;
 
     friend class TableSectionIterator;
 };
 
 // -------------------------------------------------------------------------
 
 class RenderTableSection : public RenderBox
 {
 public:
     RenderTableSection(DOM::NodeImpl *node);
     ~RenderTableSection();
     void detach() override;
 
     void setStyle(RenderStyle *style) override;
 
     const char *renderName() const override
     {
         return "RenderTableSection";
     }
 
     // overrides
     void addChild(RenderObject *child, RenderObject *beforeChild = nullptr) override;
     bool isTableSection() const override
     {
         return true;
     }
 
     short lineHeight(bool) const override
     {
         return 0;
     }
     void position(InlineBox *, int, int, bool) override {}
 
     virtual FindSelectionResult checkSelectionPoint(int _x, int _y, int _tx, int _ty,
             DOM::NodeImpl *&node, int &offset,
             SelPointState &);
 
 #ifdef ENABLE_DUMP
     void dump(QTextStream &stream, const QString &ind) const override;
 #endif
 
     void addCell(RenderTableCell *cell, RenderTableRow *row);
 
     void setCellWidths();
     void calcRowHeight();
     int layoutRows(int height);
 
     RenderTable *table() const
     {
         return static_cast<RenderTable *>(parent());
     }
 
     typedef QVector<RenderTableCell *> Row;
     struct RowStruct {
         Row *row;
         RenderTableRow *rowRenderer;
         int baseLine;
         Length height;
         bool needFlex;
     };
 
     RenderTableCell *&cellAt(int row,  int col)
     {
         return (*(grid[row].row))[col];
     }
     RenderTableCell *cellAt(int row,  int col) const
     {
         return (*(grid[row].row))[col];
     }
 
     int lowestPosition(bool includeOverflowInterior, bool includeSelf) const override;
     int rightmostPosition(bool includeOverflowInterior, bool includeSelf) const override;
     int leftmostPosition(bool includeOverflowInterior, bool includeSelf) const override;
     int highestPosition(bool includeOverflowInterior, bool includeSelf) const override;
 
     int borderLeft() const override
     {
         return table()->collapseBorders() ? 0 : RenderBox::borderLeft();
     }
     int borderRight() const override
     {
         return table()->collapseBorders() ? 0 : RenderBox::borderRight();
     }
     int borderTop() const override
     {
         return table()->collapseBorders() ? 0 : RenderBox::borderTop();
     }
     int borderBottom() const override
     {
         return table()->collapseBorders() ? 0 : RenderBox::borderBottom();
     }
 
     void paint(PaintInfo &i, int tx, int ty) override;
 
     int numRows() const
     {
         return grid.size();
     }
     int getBaseline(int row)
     {
         return grid[row].baseLine;
     }
 
     void setNeedCellRecalc()
     {
         needCellRecalc = true;
         table()->setNeedSectionRecalc();
     }
 
     RenderObject *removeChildNode(RenderObject *child) override;
 
     bool canClear(RenderObject *child, PageBreakLevel level) override;
     void addSpaceAt(int pos, int dy);
 
     bool nodeAtPoint(NodeInfo &info, int x, int y, int tx, int ty, HitTestAction action, bool inside) override;
 
     // this gets a cell grid data structure. changing the number of
     // columns is done by the table
     QVector<RowStruct> grid;
     QVector<int> rowPos;
 
     int numColumns() const;
 
     //QMap< lastInsertedColumn, cell >
     QMap< int, RenderTableCell * > cellsWithColSpanZero;
     //QMap< nextRowToInsert, cell >
     QMap< int, RenderTableCell * > cellsWithRowSpanZero;
 
     int cRow;
     int cCol;
     bool needCellRecalc;
 
     void recalcCells();
 protected:
     void ensureRows(int numRows);
     void clearGrid();
     bool emptyRow(int rowNum);
     bool flexCellChildren(RenderObject *p) const;
 
     friend class TableSectionIterator;
 };
 
 // -------------------------------------------------------------------------
 
 class RenderTableRow : public RenderBox
 {
 public:
     RenderTableRow(DOM::NodeImpl *node);
 
     void detach() override;
 
     void setStyle(RenderStyle *) override;
     const char *renderName() const override
     {
         return "RenderTableRow";
     }
     bool isTableRow() const override
     {
         return true;
     }
     void addChild(RenderObject *child, RenderObject *beforeChild = nullptr) override;
 
     short offsetWidth() const override;
     int offsetHeight() const override;
     int offsetLeft() const override;
     int offsetTop() const override;
 
     short lineHeight(bool) const override
     {
         return 0;
     }
     void position(InlineBox *, int, int, bool) override {}
 
     bool nodeAtPoint(NodeInfo &info, int x, int y, int tx, int ty, HitTestAction action, bool inside) override;
 
     void layout() override;
 
     RenderObject *removeChildNode(RenderObject *child) override;
 
     // The only time rows get a layer is when they have transparency.
     bool requiresLayer() const override
     {
         return style()->opacity() < 1.0f;
     }
     void paint(PaintInfo &i, int tx, int ty) override;
 
     void paintRow(PaintInfo &i, int tx, int ty, int w, int h);
 
     RenderTable *table() const
     {
         return static_cast<RenderTable *>(parent()->parent());
     }
     RenderTableSection *section() const
     {
         return static_cast<RenderTableSection *>(parent());
     }
 };
 
 // -------------------------------------------------------------------------
 
 class RenderTableCell : public RenderBlock
 {
 public:
     RenderTableCell(DOM::NodeImpl *node);
 
     void layout() override;
     void detach() override;
 
     const char *renderName() const override
     {
         return "RenderTableCell";
     }
     bool isTableCell() const override
     {
         return true;
     }
 
     // ### FIX these two...
     long cellIndex() const
     {
         return 0;
     }
     void setCellIndex(long) { }
 
     unsigned short colSpan() const
     {
         return cSpan;
     }
     void setColSpan(unsigned short c)
     {
         cSpan = c;
     }
 
     unsigned short rowSpan() const
     {
         return rSpan;
     }
     void setRowSpan(unsigned short r)
     {
         rSpan = r;
     }
 
     int col() const
     {
         return _col;
     }
     void setCol(int col)
     {
         _col = col;
     }
     int row() const
     {
         return _row;
     }
     void setRow(int r)
     {
         _row = r;
     }
 
     Length styleOrColWidth();
 
     // overrides
     void calcMinMaxWidth() override;
     void calcWidth() override;
     void setWidth(int width) override;
     void setStyle(RenderStyle *style) override;
     bool requiresLayer() const override;
 
     int borderLeft() const override;
     int borderRight() const override;
     int borderTop() const override;
     int borderBottom() const override;
 
     CollapsedBorderValue collapsedLeftBorder(bool rtl) const;
     CollapsedBorderValue collapsedRightBorder(bool rtl) const;
     CollapsedBorderValue collapsedTopBorder() const;
     CollapsedBorderValue collapsedBottomBorder() const;
     void collectBorders(QList<CollapsedBorderValue> &borderStyles) override;
 
     void updateFromElement() override;
 
     void setCellTopExtra(int p)
     {
         _topExtra = p;
     }
     void setCellBottomExtra(int p)
     {
         _bottomExtra = p;
     }
     int cellTopExtra() const
     {
         return _topExtra;
     }
     int cellBottomExtra() const
     {
         return _bottomExtra;
     }
 
     int pageTopAfter(int x) const override;
 
     void paint(PaintInfo &i, int tx, int ty) override;
 
     void paintCollapsedBorder(QPainter *p, int x, int y, int w, int h);
     void paintBackgroundsBehindCell(PaintInfo &i, int _tx, int _ty, RenderObject *backgroundObject);
 
     void close() override;
 
     // lie position to outside observers
     int yPos() const override
     {
         return m_y + _topExtra;
     }
 
     void repaintRectangle(int x, int y, int w, int h, Priority p = NormalPriority, bool f = false) override;
 
     short baselinePosition(bool = false) const override;
 
     bool nodeAtPoint(NodeInfo &info, int _x, int _y, int _tx, int _ty, HitTestAction hitTestAction, bool inside) override;
 
     RenderTable *table() const
     {
         return static_cast<RenderTable *>(parent()->parent()->parent());
     }
     RenderTableSection *section() const
     {
         return static_cast<RenderTableSection *>(parent()->parent());
     }
 
 #ifdef ENABLE_DUMP
     void dump(QTextStream &stream, const QString &ind) const override;
 #endif
 
     bool widthChanged()
     {
         bool retval = m_widthChanged;
         m_widthChanged = false;
         return retval;
     }
 
     int cellPercentageHeight() const
     {
         return m_percentageHeight;
     }
     void setCellPercentageHeight(int h)
     {
         m_percentageHeight = h;
     }
     bool hasFlexedAnonymous() const
     {
         return m_hasFlexedAnonymous;
     }
     void setHasFlexedAnonymous(bool b = true)
     {
         m_hasFlexedAnonymous = b;
     }
 
 protected:
     void paintBoxDecorations(PaintInfo &p, int _tx, int _ty) override;
     int borderTopExtra() const override
     {
         return _topExtra;
     }
     int borderBottomExtra() const override
     {
         return _bottomExtra;
     }
 
     int _row;
     int _col;
     ushort rSpan;
     ushort cSpan;
     int _topExtra;
     signed int _bottomExtra : 30;
     bool m_widthChanged : 1;
     bool m_hasFlexedAnonymous : 1;
     int m_percentageHeight;
 };
 
 // -------------------------------------------------------------------------
 
 class RenderTableCol : public RenderBox
 {
 public:
     RenderTableCol(DOM::NodeImpl *node);
 
     const char *renderName() const override
     {
         return "RenderTableCol";
     }
 
     bool isTableCol() const override
     {
         return true;
     }
 
     short lineHeight(bool) const override
     {
         return 0;
     }
     void position(InlineBox *, int, int, bool) override {}
     void layout() override {}
     bool requiresLayer() const override
     {
         return false;
     }
 
     void updateFromElement() override;
 
 #ifdef ENABLE_DUMP
     void dump(QTextStream &stream, const QString &ind) const override;
 #endif
 
     int span() const
     {
         return m_span;
     }
     void setSpan(int s)
     {
         m_span = s;
     }
 
 private:
     int m_span;
 };
 
 // -------------------------------------------------------------------------
 
 /** This class provides an iterator to iterate through the sections of a
  * render table in their visual order.
  *
  * In HTML, sections are specified in the order of THEAD, TFOOT, and TBODY.
  * Visually, TBODY sections appear between THEAD and TFOOT, which this iterator
  * takes into regard.
  * @author Leo Savernik
  * @internal
  */
 class TableSectionIterator
 {
 public:
 
     /**
      * Initializes a new iterator
      * @param table table whose sections to iterate
      * @param fromEnd @p true, begin with last section, @p false, begin with
      *    first section.
      */
     TableSectionIterator(RenderTable *table, bool fromEnd = false);
 
     /**
      * Initializes a new iterator
      * @param start table section to start with.
      */
     TableSectionIterator(RenderTableSection *start) : sec(start) {}
 
     /**
      * Uninitialized iterator.
      */
     TableSectionIterator() {}
 
     /** Returns the current section, or @p 0 if the end has been reached.
      */
     RenderTableSection *operator *() const
     {
         return sec;
     }
 
     /** Moves to the next section in visual order. */
     TableSectionIterator &operator ++();
 
     /** Moves to the previous section in visual order. */
     TableSectionIterator &operator --();
 
 private:
     RenderTableSection *sec;
 };
 
 }
 #endif