#include "LtsKeyPushButton.h"
#include "LtsVirtualKeyboard.h"
#include <QKeyEvent>
#include <QCoreApplication>
#include <QLabel>
#include <QApplication>


namespace LtsVirtualKeyboard
{
LtsKeyPushButton::LtsKeyPushButton(const QString &notTranslatedText, const QString &notTranslatedTextAlt, QWidget *parent)
  : QToolButton(parent)
  , m_parent(parent)
  , m_notTranslatedText(notTranslatedText)
  , m_notTranslatedTextAlt(notTranslatedTextAlt)
  , m_altMode(false)
  , m_capsMode(false)
{
  setFocusPolicy(Qt::NoFocus);
  setStyleSheet(QStringLiteral(DEFAULT_STYLE_BUTTON) + QStringLiteral(DEFAULT_BACKGROUND_BUTTON));
  
  connect(this, &LtsKeyPushButton::pressedKey, this, &LtsKeyPushButton::getKeyPress);
}

void LtsKeyPushButton::getKeyPress()
{
  int     keyCode = 0;
  QKeyEvent *key = nullptr;
  QString   text = this->text();
  

  if (!qobject_cast<LtsVirtualKeyboard *>(m_parent))
    return;
  LtsVirtualKeyboard *keyboard = qobject_cast<LtsVirtualKeyboard *>(m_parent);

  
  if (text == QStringLiteral("&&"))
    text = QStringLiteral("&");

  if (NO_SPECIAL_KEY(text) == false && (IS_BACK(text) == true || IS_TAB(text) == true || IS_RETURN(text) == true || IS_CTRL_LEFT(text) == true ||
                                        IS_ALT(text) == true || IS_CANC(text) == true || IS_CUT_LEFT(text) == true || IS_PASSWORD(text) || IS_PASTE(text) || IS_COPY(text)))
    key = new QKeyEvent(QEvent::KeyPress, keyCode, Qt::NoModifier, text);
  else
  {
    keyCode = text.toUtf8()[0];
    if (m_capsMode == false)
    {
      text = text.toLower();
      key = new QKeyEvent(QEvent::KeyPress, keyCode, Qt::NoModifier, text);
    }
    else
      key = new QKeyEvent(QEvent::KeyPress, keyCode, Qt::ShiftModifier, text);
  }
  keyboard->receiptChildKey(nullptr, key);
  QCoreApplication::processEvents();
}


void LtsKeyPushButton::mousePressEvent(QMouseEvent *)
{
  if (!qobject_cast<LtsVirtualKeyboard *>(m_parent))
    return;
  QString                 text = this->text();
  QString                 defaultStyleButton = QStringLiteral(DEFAULT_STYLE_BUTTON);
  QString                 changedColorButton = QStringLiteral(CHANGED_BACKGROUND_BUTTON);
  
  if (IS_CAPS(text) == true)
  {
    if (!styleSheet().contains(QStringLiteral(DEFAULT_BACKGROUND_BUTTON)))
      changedColorButton = QStringLiteral(DEFAULT_BACKGROUND_BUTTON);
    setStyleSheet(defaultStyleButton + changedColorButton);
    repaint();
    QCoreApplication::processEvents();
  }
  
  
  else if (IS_FIN(text) == true)
    setStyleSheet(defaultStyleButton + QStringLiteral(CHANGED_BACKGROUND_BUTTON));
  else
  {
    setStyleSheet(defaultStyleButton + changedColorButton);
    repaint();
    QCoreApplication::processEvents();
  }
  emit pressedKey();

  m_oldYKey = 0;
}

void LtsKeyPushButton::mouseReleaseEvent(QMouseEvent * )
{
  if (!qobject_cast<LtsVirtualKeyboard *>(m_parent))
    return;

  LtsVirtualKeyboard  *tmpKeyBoard = qobject_cast<LtsVirtualKeyboard *>(m_parent);

  bool            pressedEcho = IS_PASSWORD(text()) == true;

  if (IS_CAPS(text()) == false && pressedEcho == false)
    setStyleSheet(QStringLiteral(DEFAULT_STYLE_BUTTON) + QStringLiteral(DEFAULT_BACKGROUND_BUTTON));
  else if (pressedEcho == true && tmpKeyBoard->isEnabledSwitchingEcho() == false)
    setStyleSheet(QStringLiteral(DEFAULT_STYLE_BUTTON) + QStringLiteral(DEFAULT_BACKGROUND_BUTTON));
}

void LtsKeyPushButton::changeEvent(QEvent *event)
{
  if (event->type() == QEvent::LanguageChange)
  {
    setAltMode(m_altMode);
  }
  else
    QToolButton::changeEvent(event);
}

void LtsKeyPushButton::setAltMode(bool altmode)
{
  m_altMode = altmode;
  if (m_altMode)
  {
    if (!IS_CANC(text()) && !IS_FIN(text()) && !IS_CAPS(text())
        && !IS_COPY(text()) && !IS_PASTE(text()) && !IS_CUT_LEFT(text()) )
      setText(m_notTranslatedTextAlt); 
  }
  else
  {
    setText(m_notTranslatedText);
  }
  setObjectName(text());

  setCapsMode(m_capsMode);
}

void LtsKeyPushButton::setCapsMode(bool caps)
{
  if (text().length() > 2 || IS_FIN(text())) 
    return;
  if (m_notTranslatedText == QChar(223))
    return;
  m_capsMode = caps;
  if (m_capsMode)
  {
    setText(text().toUpper());
  }
  else
    setText(text().toLower());
}
}