#include "DBTreeView.h"
#include "DBEdtEngine.h"
#include "DBTreeItem.h"

#include <PixConfDBInterface/PixConfDBInterface.h>

#include <qcombobox.h>
#include <qmessagebox.h>
#include <qapplication.h>
#include <qevent.h>
#include <qlayout.h>
#include <qlabel.h>
//Added by qt3to4:
#include <Q3HBoxLayout>
#include <Q3VBoxLayout>
#include <QMouseEvent>

#include <string>

DBListView::DBListView(QWidget* parent, const char* name, Qt::WFlags fl )
  : Q3ListView(parent,name,fl)
{
  m_leftPressed=false;
  m_inDrag = false;
  m_dragItem = 0;
}
void DBListView::contentsMousePressEvent( QMouseEvent *evt )
{
  //printf("MPE event data: %d %d(%d) %d\n",evt->type(),evt->button(),Qt::LeftButton,evt->state());
  Q3ListView::contentsMousePressEvent( evt );
  if(evt->button()==Qt::LeftButton){
    m_leftPressed=true;
    if(currentItem()!=0 && currentItem()->isSelected())
      m_dragItem = dynamic_cast<DBTreeItem*>(currentItem());
    else
      m_dragItem = 0;
    //printf("locked %s\n", (m_dragItem!=0)?m_dragItem->text(0).latin1():"nothing");
  }
}
void DBListView::contentsMouseReleaseEvent( QMouseEvent *evt )
{
  Q3ListView::contentsMouseReleaseEvent( evt );
  //printf("release %s - %d\n",name(),(int)m_leftPressed);
  if(!m_leftPressed) m_dragItem = 0;
  emit droppingInto(evt, m_dragItem);
  m_leftPressed=false;
  m_dragItem = 0;
}
void DBListView::contentsMouseMoveEvent( QMouseEvent *evt )
{
  //printf("move %s - %d\n",name(),(int)m_leftPressed);
  if(m_leftPressed){
    int vx, vy;
    contentsToViewport ( evt->x(),evt->y(), vx, vy ) ;
    //printf("%d %d %d %d\n",vx,vy,viewport()->width(),viewport()->height());
    if((vx<0 || vx>viewport()->width() || vy<0 || vy>viewport()->height())
       && m_dragItem!=0)
      emit draggingInto(evt);
  }else
    Q3ListView::contentsMouseMoveEvent( evt );
}
void DBListView::myDrag(QMouseEvent *evt)
{
  //printf("myDrag in %s: %d %d %d\n",name(),(int)m_inDrag,evt->x(),evt->y());
  m_dragItem = dynamic_cast<DBTreeItem*>(itemAt(evt->pos()));
  if(m_dragItem!=0 && !m_dragItem->isInquire())
    m_dragItem=0;
  m_leftPressed = false;
  if(m_dragItem!=0)
    setSelected(m_dragItem,true);
  else
    clearSelection();
  m_inDrag=true;
}


DBTreeView::DBTreeView(DBEdtEngine &in_engine, QWidget* parent, const char* , Qt::WFlags fl )
  : QWidget(parent,fl), m_engine(in_engine)
 //  : DBTreeViewBase(parent,name,fl), m_engine(in_engine)
{
  setupUi(this);
  QObject::connect(fileList, SIGNAL(activated(QString)), this, SLOT(fillView()));
  
  Q3VBoxLayout *DBTreeViewBaseLayout = new Q3VBoxLayout( this, 11, 6, "DBTreeViewBaseLayout"); 
  
  Q3HBoxLayout *layout1 = new Q3HBoxLayout( 0, 0, 6, "layout1"); 
  layout1->addWidget( textLabel1 );
  layout1->addWidget( fileList );
  
  Q3VBoxLayout *layout2 = new Q3VBoxLayout( 0, 0, 6, "layout2"); 
  layout2->addLayout( layout1 );
  
  m_listView = new DBListView( this, ("DBListView_"+QString(this->name())).latin1() );
  m_listView->addColumn( tr( "DBInquires/Fields" ) );
  m_listView->addColumn( tr( "Type" ) );
  layout2->addWidget( m_listView );
  DBTreeViewBaseLayout->addLayout( layout2 );
  
  connect( m_listView, SIGNAL( doubleClicked(Q3ListViewItem*) ), this, SLOT( itemDoubleClick(Q3ListViewItem*) ) );

}
DBTreeView::~DBTreeView()
{
}
void DBTreeView::updateList()
{
  fileList->clear();
  for(std::vector<std::string>::iterator it=m_engine.beginDBFiles();
      it!=m_engine.endDBFiles();it++)
    fileList->insertItem((*it).c_str());
  fillView();
  return;
}
void DBTreeView::fillView()
{
  QApplication::setOverrideCursor(Qt::waitCursor);
  m_listView->clear();

  if(fileList->count()==0){
    QApplication::restoreOverrideCursor();
    return; // nothing to do
  }

  PixLib::PixConfDBInterface *file = m_engine.openFile(fileList->currentText().latin1());
  PixLib::DBInquire *root = file->readRootRecord(1);
  DBTreeItem *rootItem = new DBTreeItem(m_listView, root, fileList->currentText().latin1());
  delete file; // close file, not needed any longer
  rootItem->setOpen(true);

  QApplication::restoreOverrideCursor();
  return;
}
void DBTreeView::itemDoubleClick(Q3ListViewItem *in_item)
{
  if(in_item==0) return;

  DBTreeItem *item = dynamic_cast<DBTreeItem *>(in_item);
  if(item==0){
    QMessageBox::warning(this,"DBeditor DBTreeView::itemDoubleClick","Item "+in_item->text(0)+
			 " is not of type DBTreeItem, can't proceed.");
    return;
  }

  item->edit();
}