#include "DigitalInput.h"
#include "ui_digitalinput.h"
#include "MyInputMethod.h"
#include <QObject>
#include <QSpinBox>
#include <QSpinBox>
#include <QDebug>
#include <QKeyEvent>

DigitalInput::DigitalInput(MyInputMethod *myInputMethod,QWidget *parent) :
    QWidget(parent,(Qt::WindowStaysOnTopHint | Qt::FramelessWindowHint | Qt::Tool | Qt::BypassWindowManagerHint)),
    ui(new Ui::DigitalInput)
{
    ui->setupUi(this);
    this->myInputMethod = myInputMethod;

    connect(ui->Key_0,SIGNAL(pressed()),this,SLOT(onCharPressed()));
    connect(ui->Key_1,SIGNAL(pressed()),this,SLOT(onCharPressed()));
    connect(ui->Key_2,SIGNAL(pressed()),this,SLOT(onCharPressed()));
    connect(ui->Key_3,SIGNAL(pressed()),this,SLOT(onCharPressed()));
    connect(ui->Key_4,SIGNAL(pressed()),this,SLOT(onCharPressed()));
    connect(ui->Key_5,SIGNAL(pressed()),this,SLOT(onCharPressed()));
    connect(ui->Key_6,SIGNAL(pressed()),this,SLOT(onCharPressed()));
    connect(ui->Key_7,SIGNAL(pressed()),this,SLOT(onCharPressed()));
    connect(ui->Key_8,SIGNAL(pressed()),this,SLOT(onCharPressed()));
    connect(ui->Key_9,SIGNAL(pressed()),this,SLOT(onCharPressed()));
    connect(ui->Key_pluse,SIGNAL(pressed()),this,SLOT(onCharPressed()));
    connect(ui->Key_dot, SIGNAL(pressed()),this,SLOT(onCharPressed()));
    connect(ui->Key_backspace,SIGNAL(pressed()),this,SLOT(onKeyBackspacePressed()));
    // connect(ui->Key_selectAll,SIGNAL(pressed()),this,SLOT(onKeySelectAllPressed()));
    // connect(ui->Key_up,SIGNAL(pressed()),this,SLOT(onKeyUpPressed()));
    // connect(ui->Key_down,SIGNAL(pressed()),this,SLOT(onKeyDownPressed()));

    connect(ui->enterBtn, &QPushButton::clicked, this, &DigitalInput::onEnterPressed);
    connect(ui->clrBtn, &QPushButton::clicked, this, &DigitalInput::onClrPressed);

    // 所有键盘按钮不接收焦点，避免点击按钮时 traceEdit 丢失焦点
    QList<QPushButton*> btns = findChildren<QPushButton*>();
    for (QPushButton* btn : btns) {
        btn->setFocusPolicy(Qt::NoFocus);
    }

    ui->traceEdit->setFocusPolicy(Qt::StrongFocus);
}

DigitalInput::~DigitalInput()
{
    delete ui;
}


void DigitalInput::onCharPressed(){
    QPushButton * button = qobject_cast<QPushButton *>(sender());
    QString ch = button->text();

    if (!m_currSpinBox) {       
        ui->traceEdit->insert(ch);
        return;
    }

    int cursorPos = ui->traceEdit->cursorPosition();
    QString currentText = ui->traceEdit->text();
    QString newText = currentText.left(cursorPos) + ch + currentText.mid(cursorPos);

    if (newText.isEmpty()) {     
        ui->traceEdit->insert(ch);
        return;
    }

    bool ok = false;
    int value = newText.toInt(&ok);
    if (!ok) {                    
        ui->traceEdit->insert(ch);
        return;
    }

    int max = m_currSpinBox->maximum();
    if (value <= max) {  
        ui->traceEdit->insert(ch);
    }
}

void DigitalInput::onKeyBackspacePressed(){

//     if(m_currSpinBox && QString::number(m_currSpinBox->value()).size() == 1) {
//         ui->traceEdit->clear();
//     }

// #ifndef Q_OS_WIN32
// //QWSServer::sendKeyEvent(0,Qt::Key_Backspace,Qt::NoModifier,true,false);		//锟斤拷系统锟斤拷锟酵硷拷锟斤拷锟铰硷拷
//     MyInputMethod::sendEvent(Qt::Key_Backspace,Qt::NoModifier);
// #endif
    int cursorPos = ui->traceEdit->cursorPosition();
    if (cursorPos > 0) {
        QString text = ui->traceEdit->text();
        text.remove(cursorPos - 1, 1);
        ui->traceEdit->setText(text);
        ui->traceEdit->setCursorPosition(cursorPos - 1);
    }
}

void DigitalInput::onKeySelectAllPressed(){
#ifndef Q_OS_WIN32
    	//QWSServer::sendKeyEvent(0,Qt::Key_A,Qt::ControlModifier,true,false);		//锟斤拷系统锟斤拷锟酵硷拷锟斤拷锟铰硷拷
    	//if(!init)
    	//	QWSServer::sendKeyEvent(0,Qt::Key_A,Qt::ControlModifier,true,false);		//锟斤拷系统锟斤拷锟酵硷拷锟斤拷锟铰硷拷
    	//init = 1;

MyInputMethod::sendEvent(Qt::Key_A, Qt::ControlModifier);
#endif


}
void DigitalInput::onKeyUpPressed(){
#ifndef Q_OS_WIN32
//QWSServer::sendKeyEvent(0,Qt::Key_Up,Qt::NoModifier,true,false);		//锟斤拷系统锟斤拷锟酵硷拷锟斤拷锟铰硷拷
    MyInputMethod::sendEvent(Qt::Key_Up,Qt::NoModifier);
#endif
}
void DigitalInput::onKeyDownPressed(){
#ifndef Q_OS_WIN32
//QWSServer::sendKeyEvent(0,Qt::Key_Down,Qt::NoModifier,true,false);		//锟斤拷系统锟斤拷锟酵硷拷锟斤拷锟铰硷拷
    MyInputMethod::sendEvent(Qt::Key_Down,Qt::NoModifier);
#endif
}

void DigitalInput::onEnterPressed()
{
    hide();
}

void DigitalInput::onClrPressed()
{
    // if(m_currSpinBox) {
    //     m_currSpinBox->setValue(std::min(m_currSpinBox->maximum(), std::max(m_currSpinBox->minimum(), 0)));
    //     ui->traceEdit->setText(m_currSpinBox->value());
    //     // ui->traceEdit->setFocus();
    // }

    ui->traceEdit->clear();
    ui->traceEdit->setFocus();
}

void DigitalInput::showEvent(QShowEvent *event)
{
    QWidget::showEvent(event);
    raise();

    auto focusWidget = qApp->focusWidget();
    QSpinBox* box = dynamic_cast<QSpinBox*>(focusWidget);
    if(!box) {
        qWarning() << "focusWidget is not QSpinBox";
        m_currSpinBox = nullptr;
        return;
    }

    m_currSpinBox = box;
    ui->traceEdit->setText(box->text());
    // focusWidget->clearFocus();
    ui->traceEdit->setFocus();

    // connect(box, QOverload<const QString&>::of(&QSpinBox::valueChanged), ui->traceEdit, &QLineEdit::setText);
    qDebug() << "The traceEdit has connected to the QSpinBox: " << box->objectName();
}

void DigitalInput::hideEvent(QHideEvent * event)
{
    QWidget::hideEvent(event);

    if(m_currSpinBox) {
        int value = ui->traceEdit->text().toInt();
        int min = m_currSpinBox->minimum();
        int max = m_currSpinBox->maximum();
        value = qBound(min, value, max);
        m_currSpinBox->setValue(value);
        m_currSpinBox->clearFocus();
    }
}