#include "mFlowLoopWidget.h"
#include "ui_mFlowLoopWidget.h"
#include "mFlowLoopWidget.h"
#include "mFlowStepMenuDialog.h"
#include "TaskFlow/pageCustomtaskFlowControl.h"
#include "TaskFlow/mFcModels.h"
#include "mDownArrow.h"
#include <QLabel>
#include <QPushButton>
#include <QVBoxLayout>
#include <QMimeData>
#include <QDrag>
#include <QMouseEvent>

const int FLOW_LOOP_WIDGET_WIDTH = 180;
const int FLOW_LOOP_WIDGET_HEIGHT = 110;

MFlowLoopWidget::MFlowLoopWidget(QWidget *parent,MControl *control,MDownArrow *arrow,MDownArrow *innerDefaultArrow,MFlowStepParams *params,bool bgnormal) :
 QWidget(parent),
 ui(new Ui::MFlowLoopWidget)
{
 ui->setupUi(this);
 setFixedSize(FLOW_LOOP_WIDGET_WIDTH,FLOW_LOOP_WIDGET_HEIGHT);
 setAttribute(Qt::WA_StyledBackground,true);
 if(bgnormal){
 setStyleSheet(m_stylesheet_QWidget_flowleftwidget_blue_normal);
 }else {
 setStyleSheet(m_stylesheet_QWidget_flowleftwidget_blue_press);
 }
 setCursor(Qt::PointingHandCursor);

 this->arrow = arrow;
 this->data = new MFlowStepData(control,params);
 this->data->widget=this;

 this->innerDefaultArrow = innerDefaultArrow;
 m_fc = static_cast<PageCustomTaskFlowControl *>(this->parentWidget());


 ui->topWidget->setStyleSheet(".QWidget{background-color: rgba(0,0,0,0);}");
 ui->bottomWidget->setStyleSheet(".QWidget{background-color: rgb(255,255,255);}");
 ui->titleLabel->setStyleSheet(m_stylesheet_QLabel_title);

 title = ui->titleLabel;
 title->setText(control->menuTip);


 setAcceptDrops(true);
 boxLayout = new QVBoxLayout(ui->bottomWidget);
 boxLayout->setContentsMargins(0,0,0,0);
 boxLayout->setSpacing(0);
 boxLayout->addWidget(innerDefaultArrow,0,Qt::AlignCenter);


}
MFlowLoopWidget::~MFlowLoopWidget()
{
 data->widgetIsDelete = true;
 delete ui;
 delete data;
}

void MFlowLoopWidget::dragEnterEvent(QDragEnterEvent *event)
{
 m_fc->dragEnterEvery(event);

}

void MFlowLoopWidget::dropEvent(QDropEvent *event)
{
 m_fc->dropEvery(this,boxLayout,event);
}
void MFlowLoopWidget::mousePressEvent(QMouseEvent *event)
{

 if(event->button()==Qt::LeftButton){
 QObject *pressObject = static_cast<QObject*>(childAt(event->pos()));
 if(pressObject){
 if("MDownArrow"==QString(pressObject->metaObject()->className())){
 // 在循环控件里,点击向下的箭头,需要屏蔽,否则会引起混乱
// qDebug()<<"MFlowLoopWidget::mousePressEvent(In the loop control, click the down arrow, you need to shield it, otherwise it will cause confusion)";
 return;

 }
 }
 setStyleSheet(m_stylesheet_QWidget_flowleftwidget_blue_press);
 this->data->notificationType=MCONNSTANT_NOTIFICATION_TYPE_START;
 emit this->notificationToParentWidget(this->data);
 // 当前自身控件的坐标 this->pos()
 // 当前自身控件的尺寸 this->size()

 QWidget *mask = new QWidget(this);
 mask->setObjectName("mask");
 mask->setStyleSheet("QWidget#mask{background-color: rgba(255,255,255,0.1);}");

 mask->setFixedSize(this->size());
 mask->move(QPoint(0,0));
 mask->show();

 QPoint offset = event->pos();
 QByteArray itemData;
 QDataStream dataStream(&itemData, QIODevice::WriteOnly);
 dataStream<< offset ;

 QMimeData *mimeData = new QMimeData;
 mimeData->setData("application/MFlowLoopWidget", itemData);

 QDrag *drag = new QDrag(this);
 drag->setMimeData(mimeData);
// drag->setPixmap(nullptr);
 drag->setHotSpot(offset);


 if (drag->exec(Qt::MoveAction, Qt::CopyAction) == Qt::MoveAction){
 mask->hide();
 delete mask;
 this->data->notificationType=MCONNSTANT_NOTIFICATION_TYPE_MOVE_END_SHOWCONTENT;
 emit this->notificationToParentWidget(this->data);
 } else {
 mask->hide();
 delete mask;
 this->data->notificationType=MCONNSTANT_NOTIFICATION_TYPE_OTHER_END_SHOWCONTENT;
 emit this->notificationToParentWidget(this->data);
 }
 }else {

 MFlowStepMenuDialog *menu = new MFlowStepMenuDialog(this);
 connect(menu->deleteBtn,&QPushButton::clicked,[this,menu](){

 this->data->notificationType=MCONNSTANT_NOTIFICATION_TYPE_DELETE_CURRENT_WIDGET;
 emit this->notificationToParentWidget(this->data);

 menu->deleteLater();
 });
 menu->setAttribute(Qt::WA_DeleteOnClose);
 menu->move(QCursor::pos());
 menu->show();
 }
}
void MFlowLoopWidget::updateFixedSize(){
 // 计算当前所有控件中,尺寸最宽的控件
 int final_width = 0;
 int final_height = 0;

 int max_width = 0;
 for (int i=0;i<boxLayout->count();++i) {
 max_width = boxLayout->itemAt(i)->widget()->width();
 final_height +=boxLayout->itemAt(i)->widget()->height();
 if(max_width>final_width){
 final_width = max_width;
 }
 }
 final_width =int(final_width*1.2);
 if(final_width<FLOW_LOOP_WIDGET_WIDTH){
 final_width = FLOW_LOOP_WIDGET_WIDTH;
 }
 final_height +=50;// 50是循环框top menu的高度
 if(final_height<FLOW_LOOP_WIDGET_HEIGHT){
 final_height = FLOW_LOOP_WIDGET_HEIGHT;
 }

 setFixedSize(final_width,final_height);

}