/*===========================================================================*\
*                                                                            *
*                              OpenFlipper                                   *
 *           Copyright (c) 2001-2015, RWTH-Aachen University                 *
 *           Department of Computer Graphics and Multimedia                  *
 *                          All rights reserved.                             *
 *                            www.openflipper.org                            *
 *                                                                           *
 *---------------------------------------------------------------------------*
 * This file is part of OpenFlipper.                                         *
 *---------------------------------------------------------------------------*
 *                                                                           *
 * Redistribution and use in source and binary forms, with or without        *
 * modification, are permitted provided that the following conditions        *
 * are met:                                                                  *
 *                                                                           *
 * 1. Redistributions of source code must retain the above copyright notice, *
 *    this list of conditions and the following disclaimer.                  *
 *                                                                           *
 * 2. Redistributions in binary form must reproduce the above copyright      *
 *    notice, this list of conditions and the following disclaimer in the    *
 *    documentation and/or other materials provided with the distribution.   *
 *                                                                           *
 * 3. Neither the name of the copyright holder nor the names of its          *
 *    contributors may be used to endorse or promote products derived from   *
 *    this software without specific prior written permission.               *
 *                                                                           *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS       *
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED *
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A           *
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER *
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,  *
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,       *
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR        *
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF    *
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING      *
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS        *
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.              *
*                                                                            *
\*===========================================================================*/






#ifndef OPTIONSWIDGET_HH
#define OPTIONSWIDGET_HH

#include <OpenFlipper/Core/PluginInfo.hh>
#include <ACG/Scenegraph/DrawModes.hh>

#include "ui_optionsWidget.h"

#include <QStringList>
#include <QProgressDialog>
#include <QtNetwork>


//map for keyBindings
typedef std::multimap< std::pair< QObject*, int >, std::pair< int, Qt::KeyboardModifiers > > InverseKeyMap;


class OptionsWidget : public QWidget, public Ui::OptionsWidget
{

Q_OBJECT

public:
   OptionsWidget(std::vector<PluginInfo>& _plugins, std::vector<KeyBinding>& _core, InverseKeyMap& _invKeys, QWidget* parent =0 );

signals:
   void applyOptions();
   void saveOptions();

   void addKeyMapping(int _key, Qt::KeyboardModifiers _modifiers, QObject* _plugin, int _keyBindingID);

private slots:
   /// call slotApply and hide widget
   void slotOk();
   /// Update Options and tell others about changed Options
   void slotApply();

   /// Only hide widget
   void slotCancel();

   /// Checks for updates
   void slotCheckUpdates();

   /// Download updates
   void slotGetUpdates();

   /// open a dialog to determine the color
   void getBackgroundColor();
   void getDefaultColor();

   /// keyBinding TreeWidget-Item changed
   void keyTreeItemChanged( QTreeWidgetItem* current, QTreeWidgetItem* previous );

   void keyTreeDoubleClicked(QTreeWidgetItem* _item, int col);

   void updateShortcut();

   void slotShowPluginOptions(const QString& _pluginName );

   ///restore keyBinding Presets
   void restoreKeyPresets();

   /// update the dialog if the selected viewer changes
   void updateViewerSettings(int _row);

   /// remember user changes to viewer properties
   void viewerSettingsChanged(QListWidgetItem* _item);
   void viewerSettingsChanged(int _index);

   /// Switch between the stacked widgets of the stereo settings
   void switchStackedWidget();

   /// This function is called to update stereo settings for real-time preview
   /// Note: The parameter only makes sure that the signals can be connected
   /// to this slot.
   void slotPreviewStereoSettings(int _tmpParam = 0);
   
   /// Clear all OpenFlipper settings
   void slotClearSettings();
   
   /// Clear OpenFlipper INI
   void slotClearINI();

   /// Clear the Shader Cache
   void slotReloadShaders();

protected:
   void showEvent ( QShowEvent * event );

private:

   // plugin Options
   void initPluginOptions();

   QVBoxLayout* pluginOptionsLayout;

   //key-bindings
   std::vector<PluginInfo>& plugins_;
   std::vector<KeyBinding>& coreKeys_;

   InverseKeyMap& keys_;

   int getPluginInfo(QString pluginName);

   void initKeyTree();

   void applyShortcuts();

   // flag indicating if something went wrong and the request has to be aborted
   bool httpRequestAborted;


   // Request variable
   QNetworkAccessManager *networkMan_;
   // current request
   QNetworkReply* downloadRep_;

   // File for http downloads
   QFile *file;

   // ProgressDialog for Downloads
   QProgressDialog *progressDialog_;

   // What type of download is currently active
   enum DOWNLOAD {
      NONE,
      VERSIONS_FILE,
      PLUGIN,
      WINDOWS_SETUP
   } downloadType;

  // remember changes to viewer properties
  std::vector< ACG::SceneGraph::DrawModes::DrawMode > defaultDrawModes_;
  std::vector< bool >  defaultProjectionMode_;
  std::vector< int >   defaultViewingDirections_;
  std::vector< bool >  defaultRotationLocks_;

  bool updatingViewerSettings_;
  
  // Store current background color
  QColor backgroundColor_;

private:
   /// Starts the download of the given file
   void startDownload( QString _url );

   /// Compares the versions from the downloaded Versions file with the current versions
   void compareVersions();

   /// Compares two version strings and returns if a newer Version is available
   bool isNewer(QString _current, QString _latest);

   /// Redraws the version table
   void updateVersionsTable();

private slots:

   // This slot is called when a http request has been finished
   void httpRequestFinished(QNetworkReply *_qnr);

   // Updates the progress Dialog while downloading
   void updateDataReadProgress(qint64 _bytesReceived, qint64 _bytesTotal);

   /// error occured while downloading
   void showError(QNetworkReply::NetworkError _error);

   // Progress dialog callback for cancel
   void cancelDownload();

   // Update component of OpenFlipper
   void updateComponent();
   
   // Tracks whether another language has been selected
   void slotTranslationIndexChanged(int);

   /// authentication
   void authentication  ( QNetworkReply* _reply, QAuthenticator* _authenticator );

private:
   /** After checking for updates this variable will contain a list of filenames for which updates are available
    */
   QStringList updatedPlugins_;

   /** Here the architecture specific path for plugins will be created
    */
   QString pluginPath_;

   /** Current filename of the plugin to be updated
    */
   QString currentUpdateName_;
   
   /** Used to track whether another language has been selected
   */
   bool restartRequired_;
   bool exitOnClose_;


};

#endif //OPTIONSWIDGET_HH