/*===========================================================================*\
*                                                                            *
*                              OpenFlipper                                   *
*      Copyright (C) 2001-2010 by Computer Graphics Group, RWTH Aachen       *
*                           www.openflipper.org                              *
*                                                                            *
*--------------------------------------------------------------------------- *
*  This file is part of OpenFlipper.                                         *
*                                                                            *
*  OpenFlipper is free software: you can redistribute it and/or modify       *
*  it under the terms of the GNU Lesser General Public License as            *
*  published by the Free Software Foundation, either version 3 of            *
*  the License, or (at your option) any later version with the               *
*  following exceptions:                                                     *
*                                                                            *
*  If other files instantiate templates or use macros                        *
*  or inline functions from this file, or you compile this file and          *
*  link it with other files to produce an executable, this file does         *
*  not by itself cause the resulting executable to be covered by the         *
*  GNU Lesser General Public License. This exception does not however        *
*  invalidate any other reasons why the executable file might be             *
*  covered by the GNU Lesser General Public License.                         *
*                                                                            *
*  OpenFlipper 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 Lesser General Public License for more details.                       *
*                                                                            *
*  You should have received a copy of the GNU LesserGeneral Public           *
*  License along with OpenFlipper. If not,                                   *
*  see <http://www.gnu.org/licenses/>.                                       *
*                                                                            *
\*===========================================================================*/

/*===========================================================================*\
*                                                                            *
*   $Revision$                                                       *
*   $LastChangedBy$                                                *
*   $Date$                     *
*                                                                            *
\*===========================================================================*/




#ifndef LOGGERWIDGET_HH
#define LOGGERWIDGET_HH

#include <QtGui>

#include <OpenFlipper/BasePlugin/LoggingInterface.hh>

/** \brief Implementation of the logger Widget
 *
 * This class adds some special features to the textedit for the log window
 */
class LoggerWidget : public QWidget
{

  Q_OBJECT

  public:
    LoggerWidget( QWidget *parent = 0 );
    
    ~LoggerWidget();

    /** \brief Append a new logmessage to log viewer
    *
    * Display log message of given logtype
    */
    void append(QString _text, Logtype _type);
    
  protected:

    /** \brief Grab key events
    *
    * This function grabs all key events and passes them back to the core to handle them correctly
    */
    void keyPressEvent (QKeyEvent * _event );
    
    /** \brief Show context menu
    *
    * This function shows the context menu
    */
    void contextMenuEvent ( QContextMenuEvent * event );
    
    /** \brief Called when the widget is shown
    *
    * Function scrolls to bottom if the object gets visible
    */
    void showEvent ( QShowEvent * event );
  
  private:
    
    QListWidget* list_;
    
    //scrolling with list_'s scrollbar doesn't work correctly
    //use separate scrollbar as workaround
    QScrollBar* scrollBar_;
    bool blockNext_;
    
    QPushButton* allButton_;
    QPushButton* infoButton_;
    QPushButton* warnButton_;
    QPushButton* errorButton_;
    
    QPushButton* filterButton_;
    
    QPushButton* clearButton_;
    
    QMenu* context_;
    
    QMenu* filterMenu_;
    
    QTimer loggerUpdateTimer_;
    
    // true if new data is available
    bool newData_;
    
  private slots:
    /// update the list if a button was pressed
    void updateList();
    
    /// workaround for scrolling
    void scrollTo(int _pos);
    /// map scroll position of list to scrollbar position
    void mapScrollPosition(int _pos);
    /// copy Selected rows to clipboard
    void copySelected();
    
    /// Called when we want to scroll to the bottom
    void slotScrollUpdate();
    
    /// Called when OpenMesh error checkbox is changed
    void slotOpenMeshERR(bool _state);
    
    /// Called when filter button is pressed
    void slotFilterMenu();
};

#endif //LOGGERWIDGET_HH