#include "Selector.h"
#include "ui_Selector.h"

Selector::Selector(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Selector)
{
    ui->setupUi(this);

    //load qss
    QFile file(":/qss/Selector.qss");
    file.open(QFile::ReadOnly);
    QTextStream filetext(&file);
    QString stylesheet = filetext.readAll();
    this->setStyleSheet(stylesheet);
    file.close();

    //因为样式表无法设置到这一层，因此手动设置
    ui->listWidget->verticalScrollBar()->setStyleSheet("QScrollBar{width:60;background-color:palegoldenrod;}");


    connect(ui->listWidget,SIGNAL(clicked(QModelIndex)),
            this,SLOT(on_ListClicked(QModelIndex)));

    connect(ui->listWidget,SIGNAL(doubleClicked(QModelIndex)),
            this,SLOT(on_ListDoubleClicked(QModelIndex)));

    ui->listWidget->setFocus();
    ui->listWidget->setFocusPolicy(Qt::StrongFocus);

}


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


bool Selector::event(QEvent *event)
{
    if(event->type() == QEvent::Leave)
    {
        this->close();
    }
    return QWidget::event(event);
}

void Selector::focusOutEvent(QFocusEvent *event)
{
    qDebug() << "focus out" << event;
}



//设置分类
void Selector::setCategory(QStringList list)
{
    Q_UNUSED(list)
    isHaveCategory = true;
}

//设置当前选中
void Selector::setCurrent(QString value)
{
    QList<QListWidgetItem *> items;
    items = ui->listWidget->findItems(value,Qt::MatchCaseSensitive);
    foreach (QListWidgetItem *item, items)
    {
        ui->listWidget->setItemSelected(item,true);
        ui->listWidget->setCurrentItem(item);
    }

    ui->listWidget->setFocus();
}


//设置列表
void Selector::setList(QStringList list)
{
     stringmap.clear();

     int32_t index = 0;

     for(QStringList::const_iterator i = list.cbegin();i != list.cend();i++)
     {
         stringmap.insert(index,*i);
         index ++;
     }
     reBuildList();  
     setCurrent(stringmap.begin().value());
}

void Selector::setList(QStringList list,QString current)
{
     stringmap.clear();

     int32_t index = 0;

     for(QStringList::const_iterator i = list.cbegin();i != list.cend();i++)
     {
         stringmap.insert(index,*i);
         index ++;
     }

     reBuildList();
     setCurrent(current);
}

//重建列表
void Selector::reBuildList(void)
{
    ui->listWidget->clear();
    for (QMap<int,QString>::iterator i = stringmap.begin();i != stringmap.end(); ++i)
    {
        QString Item = i.value();

        QWidget *widget = new QWidget(ui->listWidget);
        //创建自定义的item
        //将widget作为列表的item
        QListWidgetItem *ITEM = new QListWidgetItem();

        ITEM->setText(Item);
        ITEM->setTextAlignment(Qt::AlignHCenter | Qt::AlignVCenter);

        ui->listWidget->addItem(ITEM);
        ui->listWidget->setItemWidget(ITEM, widget);
    }
}

//一旦点击，那么返回一个item的string
void Selector::on_BtnClicked()
{
    //qDebug() << "btn clicked";
}

void Selector::on_ListClicked(QModelIndex index)
{
    Q_UNUSED(index)
    //qDebug() << "list clicked" << ui->listWidget->item(index.row())->text();
}

void Selector::on_ListDoubleClicked(QModelIndex index)
{
    emit confirmValue(ui->listWidget->item(index.row())->text());
    this->close();
}