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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
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 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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#ifndef nsPageFrame_h___
#define nsPageFrame_h___

#include "nsContainerFrame.h"
#include "nsLeafFrame.h"

class nsSharedPageData;

// Page frame class used by the simple page sequence frame
class nsPageFrame : public nsContainerFrame {

public:
  friend nsIFrame* NS_NewPageFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);

  NS_IMETHOD  Reflow(nsPresContext*      aPresContext,
                     nsHTMLReflowMetrics& aDesiredSize,
                     const nsHTMLReflowState& aMaxSize,
                     nsReflowStatus&      aStatus);

  NS_IMETHOD BuildDisplayList(nsDisplayListBuilder*   aBuilder,
                              const nsRect&           aDirtyRect,
                              const nsDisplayListSet& aLists);

  virtual PRBool IsContainingBlock() const;

  /**
   * Get the "type" of the frame
   *
   * @see nsLayoutAtoms::pageFrame
   */
  virtual nsIAtom* GetType() const;
  
#ifdef NS_DEBUG
  NS_IMETHOD  GetFrameName(nsAString& aResult) const;
#endif

  //////////////////
  // For Printing
  //////////////////

  // Tell the page which page number it is out of how many
  virtual void  SetPageNumInfo(PRInt32 aPageNumber, PRInt32 aTotalPages);

  virtual void SetSharedPageData(nsSharedPageData* aPD);

  void PaintPrintPreviewBackground(nsIRenderingContext& aRenderingContext,
                                   nsPoint aPt);
  void PaintHeaderFooter(nsIRenderingContext& aRenderingContext,
                         nsPoint aPt);
  void DrawBackground(nsIRenderingContext& aRenderingContext,
                      const nsRect&        aDirtyRect,
                      nsPoint              aPt);
                      
protected:
  nsPageFrame(nsStyleContext* aContext);
  virtual ~nsPageFrame();

  typedef enum {
    eHeader,
    eFooter
  } nsHeaderFooterEnum;

  nscoord GetXPosition(nsIRenderingContext& aRenderingContext, 
                       const nsRect&        aRect, 
                       PRInt32              aJust,
                       const nsString&      aStr);

  void DrawHeaderFooter(nsIRenderingContext& aRenderingContext,
                        nsHeaderFooterEnum   aHeaderFooter,
                        PRInt32              aJust,
                        const nsString&      sStr,
                        const nsRect&        aRect,
                        nscoord              aHeight,
                        nscoord              aAscent,
                        nscoord              aWidth);

  void DrawHeaderFooter(nsIRenderingContext& aRenderingContext,
                        nsHeaderFooterEnum   aHeaderFooter,
                        const nsString&      aStrLeft,
                        const nsString&      aStrRight,
                        const nsString&      aStrCenter,
                        const nsRect&        aRect,
                        nscoord              aAscent,
                        nscoord              aHeight);

  void ProcessSpecialCodes(const nsString& aStr, nsString& aNewStr);

  PRInt32     mPageNum;
  PRInt32     mTotNumPages;

  nsSharedPageData* mPD;
};


class nsPageBreakFrame : public nsLeafFrame {

  nsPageBreakFrame(nsStyleContext* aContext);
  ~nsPageBreakFrame();

  NS_IMETHOD Reflow(nsPresContext*          aPresContext,
                    nsHTMLReflowMetrics&     aDesiredSize,
                    const nsHTMLReflowState& aReflowState,
                    nsReflowStatus&          aStatus);

  virtual nsIAtom* GetType() const;

protected:

    virtual void GetDesiredSize(nsPresContext*        aPresContext,
                              const nsHTMLReflowState& aReflowState,
                              nsHTMLReflowMetrics&     aDesiredSize);
    PRBool mHaveReflowed;

    friend nsIFrame* NS_NewPageBreakFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
};

#endif /* nsPageFrame_h___ */