/*

 * Copyright (C) 2003, 2006, 2007, 2008 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 RootInlineBox_h

#define RootInlineBox_h

#include "BidiContext.h"

#include "InlineFlowBox.h"

namespace WebCore {

class EllipsisBox;

class HitTestResult;

struct BidiStatus;

struct GapRects;

class RootInlineBox : public InlineFlowBox {

public:

    RootInlineBox(RenderObject* obj)

        : InlineFlowBox(obj)

        , m_lineBreakObj(0)

        , m_lineBreakPos(0)

        , m_lineTop(0)

        , m_lineBottom(0)

    {

    }

    virtual void destroy(RenderArena*);

    virtual bool isRootInlineBox() const { return true; }

    void detachEllipsisBox(RenderArena*);

    RootInlineBox* nextRootBox() const { return static_cast<RootInlineBox*>(m_nextLineBox); }

    RootInlineBox* prevRootBox() const { return static_cast<RootInlineBox*>(m_prevLineBox); }

    virtual void adjustPosition(int dx, int dy);

    int lineTop() const { return m_lineTop; }

    int lineBottom() const { return m_lineBottom; }

    int selectionTop() const;

    int selectionBottom() const { return lineBottom(); }

    int selectionHeight() const { return max(0, selectionBottom() - selectionTop()); }

    int verticallyAlignBoxes(int heightOfBlock, GlyphOverflowAndFallbackFontsMap&);

    void setLineTopBottomPositions(int top, int bottom);

    virtual RenderLineBoxList* rendererLineBoxes() const;

    RenderObject* lineBreakObj() const { return m_lineBreakObj; }

    BidiStatus lineBreakBidiStatus() const;

    void setLineBreakInfo(RenderObject*, unsigned breakPos, const BidiStatus&);

    unsigned lineBreakPos() const { return m_lineBreakPos; }

    void setLineBreakPos(unsigned p) { m_lineBreakPos = p; }

    int blockHeight() const { return m_blockHeight; }

    void setBlockHeight(int h) { m_blockHeight = h; }

    bool endsWithBreak() const { return m_endsWithBreak; }

    void setEndsWithBreak(bool b) { m_endsWithBreak = b; }

    void childRemoved(InlineBox* box);

    bool canAccommodateEllipsis(bool ltr, int blockEdge, int lineBoxEdge, int ellipsisWidth);

    void placeEllipsis(const AtomicString& ellipsisStr, bool ltr, int blockLeftEdge, int blockRightEdge, int ellipsisWidth, InlineBox* markupBox = 0);

    virtual int placeEllipsisBox(bool ltr, int blockLeftEdge, int blockRightEdge, int ellipsisWidth, bool& foundBox);

    EllipsisBox* ellipsisBox() const;

    void paintEllipsisBox(PaintInfo&, int tx, int ty) const;

    bool hitTestEllipsisBox(HitTestResult&, int x, int y, int tx, int ty, HitTestAction, bool);

    virtual void clearTruncation();

#if PLATFORM(MAC)

    void addHighlightOverflow();

    void paintCustomHighlight(PaintInfo&, int tx, int ty, const AtomicString& highlightType);

#endif

    virtual void paint(PaintInfo&, int tx, int ty);

    virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int, int, int, int);

    bool hasSelectedChildren() const { return m_hasSelectedChildren; }

    void setHasSelectedChildren(bool);

    virtual RenderObject::SelectionState selectionState();

    InlineBox* firstSelectedBox();

    InlineBox* lastSelectedBox();

    GapRects fillLineSelectionGap(int selTop, int selHeight, RenderBlock* rootBlock, int blockX, int blockY,

                                  int tx, int ty, const PaintInfo*);

    RenderBlock* block() const;

    InlineBox* closestLeafChildForXPos(int x, bool onlyEditableLeaves = false);

    Vector<RenderBox*>& floats()

    {

        ASSERT(!isDirty());

        if (!m_floats)

            m_floats= adoptPtr(new Vector<RenderBox*>);

        return *m_floats;

    }

    Vector<RenderBox*>* floatsPtr() { ASSERT(!isDirty()); return m_floats.get(); }

    virtual void extractLineBoxFromRenderObject();

    virtual void attachLineBoxToRenderObject();

    virtual void removeLineBoxFromRenderObject();

private:

    bool hasEllipsisBox() const { return m_hasEllipsisBoxOrHyphen; }

    void setHasEllipsisBox(bool hasEllipsisBox) { m_hasEllipsisBoxOrHyphen = hasEllipsisBox; }

    // Where this line ended.  The exact object and the position within that object are stored so that

    // we can create an InlineIterator beginning just after the end of this line.

    RenderObject* m_lineBreakObj;

    unsigned m_lineBreakPos;

    RefPtr<BidiContext> m_lineBreakContext;

    int m_lineTop;

    int m_lineBottom;

    // Floats hanging off the line are pushed into this vector during layout. It is only

    // good for as long as the line has not been marked dirty.

    OwnPtr<Vector<RenderBox*> > m_floats;

    // The height of the block at the end of this line.  This is where the next line starts.

    int m_blockHeight;

    WTF::Unicode::Direction m_lineBreakBidiStatusEor : 5;

    WTF::Unicode::Direction m_lineBreakBidiStatusLastStrong : 5;

    WTF::Unicode::Direction m_lineBreakBidiStatusLast : 5;

};

inline void RootInlineBox::setLineTopBottomPositions(int top, int bottom) 

{ 

    m_lineTop = top; 

    m_lineBottom = bottom; 

}

} // namespace WebCore

#endif // RootInlineBox_h