/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 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) 2003
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Dave Hyatt <hyatt@mozilla.org> (Original Author)
 *   Jan Varga <varga@ku.sk>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either 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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 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#ifndef nsTreeColumns_h__
#define nsTreeColumns_h__

#include "nsITreeColumns.h"
#include "nsITreeBoxObject.h"
#include "nsIContent.h"
#include "nsIFrame.h"

class nsTreeColumns;

// This class is our column info.  We use it to iterate our columns and to obtain
// information about each column.
class nsTreeColumn : public nsITreeColumn {
public:
  nsTreeColumn(nsTreeColumns* aColumns, nsIFrame* aFrame);
  ~nsTreeColumn();

  NS_DECL_ISUPPORTS
  NS_DECL_NSITREECOLUMN

  friend class nsTreeBodyFrame;
  friend class nsTreeColumns;

protected:
  void CacheAttributes();

  nsIContent* GetContent() { return mFrame->GetContent(); };

  void SetColumns(nsTreeColumns* aColumns) { mColumns = aColumns; };

  PRInt32 GetX() { return mFrame->GetRect().x; };
  nscoord GetWidth() { return mFrame->GetRect().width; };

  const nsAString& GetId() { return mId; };
  nsIAtom* GetAtom() { return mAtom; };

  PRInt32 GetIndex() { return mIndex; };

  PRBool IsPrimary() { return mIsPrimary; };
  PRBool IsCycler() { return mIsCycler; };
  PRBool IsEditable() { return mIsEditable; };

  PRInt16 GetType() { return mType; };

  PRInt8 GetCropStyle() { return mCropStyle; };
  PRInt32 GetTextAlignment() { return mTextAlignment; };

  nsTreeColumn* GetNext() { return mNext; };
  nsTreeColumn* GetPrevious() { return mPrevious; };
  void SetNext(nsTreeColumn* aNext) { NS_IF_ADDREF(mNext = aNext); };
  void SetPrevious(nsTreeColumn* aPrevious) { mPrevious = aPrevious; };

private:
  nsIFrame* mFrame;

  nsTreeColumns* mColumns;

  nsString mId;
  nsCOMPtr<nsIAtom> mAtom;

  PRInt32 mIndex;

  PRPackedBool mIsPrimary;
  PRPackedBool mIsCycler;
  PRPackedBool mIsEditable;

  PRInt16 mType;

  PRInt8 mCropStyle;
  PRInt8 mTextAlignment;

  nsTreeColumn* mNext;
  nsTreeColumn* mPrevious;
};

class nsTreeColumns : public nsITreeColumns {
public:
  nsTreeColumns(nsITreeBoxObject* aTree);
  ~nsTreeColumns();

  NS_DECL_ISUPPORTS
  NS_DECL_NSITREECOLUMNS

  friend class nsTreeBodyFrame;
protected:
  void SetTree(nsITreeBoxObject* aTree) { mTree = aTree; };

  // Builds our cache of column info.
  void EnsureColumns();

  nsTreeColumn* GetFirstColumn() { EnsureColumns(); return mFirstColumn; };
  nsTreeColumn* GetPrimaryColumn();

private:
  nsITreeBoxObject* mTree;

  nsTreeColumn* mFirstColumn;
};

#endif // nsTreeColumns_h__
