#ifndef KEYBOARD_H
#define KEYBOARD_H

#include <QWidget>
#include <QPushButton>
#include <QDialog>
#include <QLabel>

//chinese support
#include <QFile>
#include <QMultiMap>
#include <QLineEdit>
#include <QMutex>

class keyboard : public QDialog
{
    Q_OBJECT
public:
    typedef enum
    {
        enKeyboardNotGen,
        enKeyboardCreating,
        enKeyboardCreated
    }enKeyboardStatus;

    static const int KEYS_QUANTITY_MAX = 60;
    static const int SPACE = 5;
    static const int ROW_NUM = 6;

    static keyboard* GetInstance(QWidget *parent);
    static void preLoad();
    static void close();

    ~keyboard();
    void popup(const int posToBottom = 0);

signals:
    void signalWordChoose(QString word);

public slots:
    void slotBtnClicked();
	void slotBtnPressed();
	void slotBtnReleased();
    void slotPageTurnBtnClicked();
    void slotCandidateBtnClicked();
    void slotClose();
	void slotTimer();

private:
    static keyboard* m_instance;
    QObject* m_receiver;
    static enKeyboardStatus m_status;

    QPushButton* m_btn[KEYS_QUANTITY_MAX];
    //chinese support
    QVector<QPushButton*> m_btnsCnCdd;
    QLineEdit* m_editCn;
    QPushButton* m_btnCnPrePage;
    QPushButton* m_btnCnNextPage;

    static QFile* m_pinyinFile;
    static QRegExp* m_regExp;
    static QMultiMap<QString, QString>* m_pinyinMap;

    bool isInputMethodCn;
    int m_iCddPageIndex;
    QList<QString> m_pinyinList;

	QLabel* m_labelTip;
	QTimer* m_timer;
	QPushButton* m_curPressedKey;

    explicit keyboard(QWidget *parent = nullptr);
    void setInputMethodCn(bool setCn);
    void matching(const QString& userInput);
    void changePage(int index);
    void setReceiver(QObject*);
    QObject* receiver() const;

    void shiftkeyboard(int caps);
    void paintEvent(QPaintEvent *event);
	void keyPress(const QPushButton* btn);
};

#endif // KEYBOARD_H