#ifndef KEYBOARD_H
#define KEYBOARD_H

#include <QWidget>
#include <QShowEvent>
#include <QKeyEvent>
#include <QListWidgetItem>
#include <QPropertyAnimation>

#include "InputModeMenu.h"
#include "KeyButton.h"

namespace Ui
{
    class Keyboard;
}

class InputMethod;
class SpellStringWatcher;
class InputModeMenu;

class Keyboard : public QWidget
{
    Q_OBJECT

public:
    explicit Keyboard(QWidget* aParent = nullptr);
    ~Keyboard();

    void setEdit(QWidget* aEdit);

public slots:
    void hideKeyboard();

signals:
    void keyboardHided();

private:
    void switchInputMode(InputMode aMode);
    void getCandidateList(const QString& aSpellString);
    bool isSingleChar(const QString& aSpellString);
    void initializeStyle();
    void initializeHandWriteWidget();
    void initializeInputModeMenu();
    void initializeStaticButton();
    void initializeAnimation();

    void handleFirstCandidateString(QStringList& aCandidateList);
    void updateButtonShift(bool aIsCaps);

protected slots:
    void showEvent(QShowEvent* aEvent);
    void handleKeyButtonPressed(int aKey, const QString& aValue);
    void handleBackspacePressed(int aKey, const QString& aValue);
    void handleStaticButtonPressed(int aKey, const QString& aValue);

private slots:
    void candidateListItemClicked(QListWidgetItem* item);

private:
    Ui::Keyboard* mUI;
    InputMode mInputMode;
    InputMethod* mInputMethod;
    InputModeMenu* mInputModeMenu;
    QWidget* mCurrentWidget;
    QList<KeyButton*> mKeyButtonList;

    QStringList mButtonValueListLow;
    QStringList mButtonValueListCapital;
    QStringList mButtonValueListMark;

    QList<Qt::Key> mKeyListNormal;
    QList<Qt::Key> mKeyListMark;
    SpellStringWatcher* mSpellStringWatcher;
    QPropertyAnimation* mShowAnimation;
    QPropertyAnimation* mHideAnimation;
};

#endif // KEYBOARD_H