#include "ElaTabWidgetPrivate.h"

#include "ElaCustomTabWidget.h"
#include "ElaTabBar.h"
#include "ElaTabWidget.h"
#include <QApplication>
#include <QDebug>
#include <QMimeData>
#include <QMouseEvent>
ElaTabWidgetPrivate::ElaTabWidgetPrivate(QObject *parent) : QObject{parent} {}

ElaTabWidgetPrivate::~ElaTabWidgetPrivate() {}

void ElaTabWidgetPrivate::onTabDragCreate(QDrag *drag) {
    Q_Q(ElaTabWidget);
    QMimeData *mimeData = drag->mimeData();
    mimeData->setProperty("ElaTabWidgetObject", QVariant::fromValue(q));
    int        index                  = mimeData->property("TabIndex").toInt();
    QString    tabText                = q->tabText(index);
    QIcon      tabIcon                = q->tabIcon(index);
    QWidget   *dragWidget             = q->widget(index);
    QVariant   originTabWidgetVariant = dragWidget->property("ElaOriginTabWidget");
    ElaTabBar *tabBarObject           = mimeData->property("ElaTabBarObject").value<ElaTabBar *>();
    if (!originTabWidgetVariant.isValid() && q->objectName() != "ElaCustomTabWidget") {
        dragWidget->setProperty("ElaOriginTabWidget", QVariant::fromValue<ElaTabWidget *>(q));
    }
    mimeData->setProperty("DragWidget", QVariant::fromValue(dragWidget));
    QMouseEvent releaseEvent(QEvent::MouseButtonRelease, QPoint(-1, -1), QPoint(-1, -1), Qt::LeftButton, Qt::LeftButton, Qt::NoModifier);
    QApplication::sendEvent(tabBarObject, &releaseEvent);
    if (drag->exec() == Qt::IgnoreAction) {
        // 创建新窗口
        ElaTabBar *originCustomTabBar = tabBarObject;
        if (originCustomTabBar && originCustomTabBar->objectName() == "ElaCustomTabBar") {
            originCustomTabBar->removeTab(index);
        }
        QWidget *floatParentWidget = originTabWidgetVariant.value<ElaTabWidget *>();
        if (!floatParentWidget) {
            floatParentWidget = dragWidget->property("ElaFloatParentWidget").value<QWidget *>();
        }
        ElaCustomTabWidget *floatWidget  = new ElaCustomTabWidget(floatParentWidget);
        ElaTabBar          *customTabBar = floatWidget->getCustomTabBar();
        dragWidget->setProperty("CurrentCustomBar", QVariant::fromValue<ElaTabBar *>(customTabBar));
        floatWidget->addTab(dragWidget, tabIcon, tabText);
        floatWidget->show();
        QPoint cursorPoint = QCursor::pos();
        floatWidget->move(cursorPoint.x() - floatWidget->width() / 2, cursorPoint.y() - 40);
    }
}

void ElaTabWidgetPrivate::onTabDragDrop(const QMimeData *mimeData) {
    Q_Q(ElaTabWidget);
    QWidget   *dragWidget   = mimeData->property("DragWidget").value<QWidget *>();
    QString    tabText      = mimeData->property("TabText").toString();
    QIcon      tabIcon      = mimeData->property("TabIcon").value<QIcon>();
    ElaTabBar *customTabBar = mimeData->property("ElaTabBarObject").value<ElaTabBar *>();
    int        index        = mimeData->property("TabIndex").toInt();
    int        dropIndex    = mimeData->property("TabDropIndex").toInt();
    if (customTabBar && customTabBar->objectName() == "ElaCustomTabBar") {
        customTabBar->removeTab(index);
    }
    q->insertTab(dropIndex, dragWidget, tabIcon, tabText);
    if (_customTabBar) {
        dragWidget->setProperty("CurrentCustomBar", QVariant::fromValue<ElaTabBar *>(_customTabBar));
        _customTabBar->insertTab(dropIndex, tabIcon, tabText);
    }
}

void ElaTabWidgetPrivate::onTabCloseRequested(int index) {
    Q_Q(ElaTabWidget);
    QWidget      *closeWidget     = q->widget(index);
    ElaTabWidget *originTabWidget = closeWidget->property("ElaOriginTabWidget").value<ElaTabWidget *>();
    if (originTabWidget && originTabWidget != q) {
        ElaTabBar *customTabBar = closeWidget->property("CurrentCustomBar").value<ElaTabBar *>();
        if (customTabBar) {
            customTabBar->removeTab(index);
            closeWidget->setProperty("CurrentCustomBar", QVariant::fromValue<ElaTabBar *>(nullptr));
        }
        originTabWidget->addTab(closeWidget, q->tabIcon(index), q->tabText(index));
    } else if (!originTabWidget && q->objectName() == "ElaCustomTabWidget") {
        _customTabBar->removeTab(index);
        q->removeTab(index);
        closeWidget->deleteLater();
    } else {
        q->removeTab(index);
        closeWidget->deleteLater();
    }
}