#ifndef TABWIDGETSELECTALGORITHM_H
#define TABWIDGETSELECTALGORITHM_H

#include <QTabWidget>

#include "cipherssingleton.h"
#include "tabsymmetric.h"
#include "tabasymmetric.h"
#include "tabhybrid.h"





/**
* \class TabWidgetSelectAlgorithm
* \brief Subclassed TabWidget for Algorithm-Selection.
*
* SubClass of QTabWidget with added functionality for exclusive selection of an algorithm for de/encryption,
* sorted by the kind of algorithm (NullCipher, Symmetric, Asymmetric, Hybrid)
* For each kind of algorithm, a special TabWidget has been implemented.
* \author Uwe Gogolin [Gogolin.Uwe@FH-SWF.de]
* \version 0.1
* \date 28.02.2013
*/
class TabWidgetSelectAlgorithm : public QTabWidget
{
    Q_OBJECT

public: //Methods
    /**
    * \brief Class Constructor.
    *
    * Class Constructor. Initializes the four different TabWidgets and adds them as Tabs to itself.
    * Connects the Signal "currentChanged(int)" with the Slot "oncurrentChanged_triggered(int)", which
    * after checking which is the new current Widget, sends that info via the Signal "currentTabChanged(QString)"
    * [This is needed to keep the corresponding option in the Menu up to date]
    * \param QWidget* parent The QWidget the used instance of this class is subordinated to.
    */
    TabWidgetSelectAlgorithm(QWidget *parent = 0);



public slots:
    /**
    * \brief Slot called to set Tab for NullCipher active.
    *
    * Changes the current Tab to the NullCipher-Tab.
    */
    void onNullCipher_selected();


    /**
    * \brief Slot called to set Tab for Symmetric Ciphers active.
    *
    * Changes the current Tab to the Symmetric Ciphers-Tab.
    */
    void onSymmetric_selected();


    /**
    * \brief Slot called to set Tab for Asymmetric Ciphers active.
    *
    * Changes the current Tab to the Asymmetric Ciphers-Tab.
    */
    void onAsymmetric_selected();


    /**
    * \brief Slot called to set Tab for Hybrid Ciphers active.
    *
    * Changes the current Tab to the Hybrid Ciphers-Tab.
    */
    void onHybrid_selected();



signals:
    /**
    * \brief SIGNAL to inform other Classes when another Tab becomes active.
    *
    * This Signal is used to inform other Classes when a new Tab becomes active.
    * [NOTE: Will be modified to use NameSpaceCryptEngine::CryptAlgorithm in the future]
    * \param QString currentTabName string containing the Name of the newly active Tab.
    */
    void currentTabChanged(QString currentTabName);



    /**
    * \brief SIGNAL to inform other Classes when a Cipher gets selected.
    *
    * This Signal is used to inform other Classes when a Cipher gets selected.
    * \param int cipher The Integer referencing the selected Cipher according to the Class CiphersSingleton.
    */
    void cipherChanged(int cipher);



    /**
    * \brief SIGNAL to inform other Classes when the Keylength is changed.
    *
    * This Signal is used to inform other Classes when the Keylength is changed.
    * \param int keyLength The new Keylength.
    * \param bool symmetric True if Length for Symmetric Cipher, false if for asymmetric Cipher.
    */
    void keyLengthChanged(int keyLength, bool symmetric);


private slots:
    /**
    * \brief Slot needed to get the pointer to the newly active Tab from its index.
    *
    * This slot is called when the currently active Tab changes. This Tab, however, is only referenced by index
    * by the Signal "currentChanged", which is fine for reference inside this Class.
    * For Classes outside, a better description is needed. Currently, a QString is used.
    * [NOTE: Will be modified to use NameSpaceCryptEngine::CryptAlgorithm in the future]
    * \param int index Index of the newly active Tab
    */
    void oncurrentChanged_triggered(int index);



private: //Attributes
    /**
    * \brief Pointer to the TabWidget for NullCipher.
    *
    * \attention This Tab is supposed to be empty, since there no settings for the NullCipher.
    */
    QWidget* m_nullCipher;


    /**
    * \brief Pointer to the TabWidget for Symmetric Ciphers.
    */
    QWidget* m_symmetric;


    /**
    * \brief Pointer to the TabWidget for Asymmetric Ciphers.
    */
    QWidget* m_asymmetric;


    /**
    * \brief Pointer to the TabWidget for Hybrid Ciphers.
    */
    QWidget* m_hybrid;    
};

#endif // TABWIDGETSELECTALGORITHM_H