/* Copyright (C) 2014
 * swift project Community / Contributors
 *
 * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
 * directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
 * including this file, may be copied, modified, propagated, or distributed except according to the terms
 * contained in the LICENSE file.
 */

//! \file

#ifndef BLACKGUI_COMPONENTS_HOTKEYDIALOG_H
#define BLACKGUI_COMPONENTS_HOTKEYDIALOG_H

#include "blackgui/blackguiexport.h"
#include "blackgui/models/actionmodel.h"
#include "blackmisc/identifierlist.h"
#include "blackmisc/input/actionhotkey.h"

#include <QComboBox>
#include <QDialog>
#include <QObject>
#include <QScopedPointer>

class QItemSelection;
class QWidget;

namespace BlackCore { class CInputManager; }
namespace BlackMisc { namespace Input { class CHotkeyCombination; } }
namespace Ui { class CHotkeyDialog; }
namespace BlackGui
{
    namespace Components
    {
        /*!
         * ComboBox for selecting keyboard keys
         */
        class BLACKGUI_EXPORT CKeySelectionBox : public QComboBox
        {
            Q_OBJECT

        public:
            //! Constructor
            CKeySelectionBox(QWidget *parent = nullptr);

            //! Set key with index as selected
            void setSelectedIndex(int index);

        signals:
            //! User has changed the selection
            void keySelectionChanged(int oldIndex, int newIndex);

        private:
            void updateSelectedIndex(int index);

            int m_oldIndex;
        };

        /*!
         * Hotkey dialog
         */
        class BLACKGUI_EXPORT CHotkeyDialog : public QDialog
        {
            Q_OBJECT

        public:
            //! Constructor
            CHotkeyDialog(
                const BlackMisc::Input::CActionHotkey &actionHotkey,
                const BlackMisc::CIdentifierList &identifiers,
                QWidget *parent = nullptr);

            //! Destructor
            virtual ~CHotkeyDialog();

            //! Get hotkey selected by user
            BlackMisc::Input::CActionHotkey getSelectedActionHotkey() const { return m_actionHotkey; }

            //! Init style sheet
            void initStyleSheet();

            //! \copydoc QDialog::accept
            virtual void accept() override;

            //! Runs the hotkey dialog and returns the result
            static BlackMisc::Input::CActionHotkey getActionHotkey(
                const BlackMisc::Input::CActionHotkey &initial,
                const BlackMisc::CIdentifierList &identifiers,
                QWidget *parent = nullptr);

        private:
            void advancedModeChanged();
            void selectHotkey();
            void combinationSelectionChanged(const BlackMisc::Input::CHotkeyCombination &combination);
            void combinationSelectionFinished(const BlackMisc::Input::CHotkeyCombination &combination);
            void changeSelectedAction(const QItemSelection &selected, const QItemSelection &deselected);

            void changeApplicableMachine(int index);
            void synchronize();
            void synchronizeSimpleSelection();
            void synchronizeAdvancedSelection();
            void setupAdvancedFrame();
            void clearAdvancedFrame();
            void advancedKeyChanged(int oldIndex, int newIndex);
            void selectAction();

            QScopedPointer<Ui::CHotkeyDialog> ui;
            BlackMisc::Input::CActionHotkey m_actionHotkey;
            BlackGui::Models::CActionModel m_actionModel;
            BlackCore::CInputManager *m_inputManager = nullptr;
        };
    } // ns
} // ns

#endif