quizitem.h

/*
  Copyright (c) 2012, BuildmLearn Contributors listed at http://buildmlearn.org/people/
  All rights reserved.

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  modification, are permitted provided that the following conditions are met:

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  * Redistributions in binary form must reproduce the above copyright notice,
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  * Neither the name of the BuildmLearn 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
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*/

#ifndef QUIZITEM_H
#define QUIZITEM_H

#include <QWidget>

#include "ui_quizitem.h"

#include "templates/quiz/quizquestion.h"


namespace Ui {
  class QuizItem;
}

/// \brief Widget which represents single question in Quiz.
/// \ingroup template-quiz
class QuizItem : public QWidget {
    Q_OBJECT

  public:
    /// \brief Enum containing possible states for widget for the question.
    enum State {
      Unanswered,
      AnsweredCorrectly,
      AnsweredWrongly
    };

    // Contructors and destructors.
    explicit QuizItem(QWidget *parent = 0);
    virtual ~QuizItem();

    /// \brief Sets new question for this widget.
    /// \param question Question object.
    /// \param question_number Number of the question.
    void setQuestion(const QuizQuestion &question, int question_number, int total_questions);

    /// \brief Access to state of quiz question widget.
    /// \return Returns the state of quiz question widget.
    State state() const;

  public slots:
    /// \brief Resets widget for the question to its original/default state.
    void reset();

  signals:
    /// \brief Emitted if users clicks "Next" or "Submit"
    void questionSubmitted();

  private slots:
    void onNextClicked();
    void onSubmitClicked();

  private:
    void setupButtons();
    void createConnections();
    void clearStylesheets();

  private:
    State m_state;
    Ui::QuizItem *m_ui;
    QuizQuestion m_question;
    QList<QRadioButton*> m_answerButtons;
};

#endif // QUIZITEM_H